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San Onofre Nuclear Generating Station | San Onofre Nuclear Generating Station | ||
P.O. Box 128 | P.O. Box 128 | ||
San Clemente, California 92674-0128 | San Clemente, California 92674-0128 | ||
SUBJECT: | SUBJECT: | ||
NRC INSPECTION REPORT 50-206/03-10; 50-361/03-10; 50-362/03-10; | |||
72-41/03-01 FOR THE PRE-OPERATIONAL TESTING AND FIRST CANISTER | |||
LOADING AT THE INDEPENDENT SPENT FUEL STORAGE INSTALLATION | |||
Dear Mr. Ray: | Dear Mr. Ray: | ||
NRC inspections were conducted between June 26 and October 1, 2003, at your San Onofre | NRC inspections were conducted between June 26 and October 1, 2003, at your San Onofre | ||
nuclear generating station to evaluate the dry cask storage activities for your Independent Spent | nuclear generating station to evaluate the dry cask storage activities for your Independent Spent | ||
Fuel Storage Installation (ISFSI). These inspections included observation of activities associated | Fuel Storage Installation (ISFSI). These inspections included observation of activities associated | ||
with your pre-operational testing program and the loading of your first canister. The inspections | with your pre-operational testing program and the loading of your first canister. The inspections | ||
were conducted to confirm compliance of your program and activities with the requirements | were conducted to confirm compliance of your program and activities with the requirements | ||
specified in the license, technical specifications, Final Safety Analysis Report, the NRCs Safety | specified in the license, technical specifications, Final Safety Analysis Report, the NRCs Safety | ||
Evaluation Report and 10 CFR Part 72. The enclosed report presents the results of these | Evaluation Report and 10 CFR Part 72. The enclosed report presents the results of these | ||
inspections. The inspections found that activities were being performed in accordance with | inspections. The inspections found that activities were being performed in accordance with | ||
procedural and regulatory requirements. No violations of NRC regulations were identified. | procedural and regulatory requirements. No violations of NRC regulations were identified. | ||
In accordance with 10 CFR 2.790 of the NRC's "Rules of Practice," a copy of this letter, its | In accordance with 10 CFR 2.790 of the NRC's "Rules of Practice," a copy of this letter, its | ||
enclosure, and your response (if any) will be made available electronically for public inspection in | enclosure, and your response (if any) will be made available electronically for public inspection in | ||
the NRC Public Document Room or from the NRCs document system (ADAMS), accessible from | the NRC Public Document Room or from the NRCs document system (ADAMS), accessible from | ||
the NRC Web site at http://www.nrc.gov/reading-rm/adams.html. To the extent possible, your | the NRC Web site at http://www.nrc.gov/reading-rm/adams.html. To the extent possible, your | ||
response should not include any personal privacy, proprietary, or safeguards information so that it | response should not include any personal privacy, proprietary, or safeguards information so that it | ||
can be made available to the Public without redaction. | can be made available to the Public without redaction. | ||
Should you have any questions concerning this inspection, please contact the undersigned at | Should you have any questions concerning this inspection, please contact the undersigned at | ||
(817) 860-8191 or Mr. Vincent Everett, Senior Health Physicist, at (817) 860-8198. | (817) 860-8191 or Mr. Vincent Everett, Senior Health Physicist, at (817) 860-8198. | ||
Sincerely, | |||
/RA/ | |||
D. Blair Spitzberg, Ph.D., Chief | |||
Fuel Cycle and Decommissioning Branch | |||
Docket Nos.: 50-206; 50-361; 50-362; 72-41 | Docket Nos.: 50-206; 50-361; 50-362; 72-41 | ||
License Nos.: DPR-13; NPF-10; NPF-15 | License Nos.: DPR-13; NPF-10; NPF-15 | ||
Southern California Edison Company | Southern California Edison Company | ||
Enclosure: | -2- | ||
NRC Inspection Report | Enclosure: | ||
NRC Inspection Report | |||
50-206/03-10; 50-361/03-10; 50-362/03-10; 72-41/03-01 | |||
cc w/enclosure: | cc w/enclosure: | ||
Dwight E. Nunn, Vice President | Dwight E. Nunn, Vice President | ||
| Line 61: | Line 63: | ||
San Onofre Nuclear Generating Station | San Onofre Nuclear Generating Station | ||
P.O. Box 128 | P.O. Box 128 | ||
San Clemente, California 92674-0128 | San Clemente, California 92674-0128 | ||
Michael R. Olson | Michael R. Olson | ||
San Onofre Liaison | San Onofre Liaison | ||
San Diego Gas & Electric Company | San Diego Gas & Electric Company | ||
P.O. Box 1831 | P.O. Box 1831 | ||
San Diego, California 92112-4150 | San Diego, California 92112-4150 | ||
Mayor | Mayor | ||
City of San Clemente | City of San Clemente | ||
100 Avenida Presidio | 100 Avenida Presidio | ||
San Clemente, California 92672 | San Clemente, California 92672 | ||
Chairman, Board of Supervisors | Chairman, Board of Supervisors | ||
County of San Diego | County of San Diego | ||
1600 Pacific Highway, Room 335 | 1600 Pacific Highway, Room 335 | ||
San Diego, California 92101 | San Diego, California 92101 | ||
Ed Bailey, Radiation Program Director | Ed Bailey, Radiation Program Director | ||
Radiologic Health Branch | Radiologic Health Branch | ||
State Department of Health Services | State Department of Health Services | ||
P.O. Box 942732 (MS 178) | P.O. Box 942732 (MS 178) | ||
Sacramento, California 94327-7320 | Sacramento, California 94327-7320 | ||
David Spath, Chief | David Spath, Chief | ||
Division of Drinking Water and | Division of Drinking Water and | ||
Environmental Management | |||
P.O. Box 942732 | P.O. Box 942732 | ||
Sacramento, California 94234-7320 | Sacramento, California 94234-7320 | ||
James D. Boyd, Commissioner | James D. Boyd, Commissioner | ||
California Energy Commission | California Energy Commission | ||
1516 Ninth Street (MS 34) | 1516 Ninth Street (MS 34) | ||
Sacramento, California 95814 | Sacramento, California 95814 | ||
Southern California Edison Company | Southern California Edison Company | ||
-3- | |||
Douglas K. Porter, Esq. | Douglas K. Porter, Esq. | ||
Southern California Edison Company | Southern California Edison Company | ||
2244 Walnut Grove Avenue | 2244 Walnut Grove Avenue | ||
Rosemead, California 91770 | Rosemead, California 91770 | ||
Gary L. Nolff | Gary L. Nolff | ||
Power Projects/Contracts Manager | Power Projects/Contracts Manager | ||
Riverside Public Utilities | Riverside Public Utilities | ||
2911 Adams Street | 2911 Adams Street | ||
Riverside, California 92504 | Riverside, California 92504 | ||
Eileen M. Teichert, Esq. | Eileen M. Teichert, Esq. | ||
Supervising Deputy City Attorney | Supervising Deputy City Attorney | ||
City of Riverside | City of Riverside | ||
3900 Main Street | 3900 Main Street | ||
Riverside, California 92522 | Riverside, California 92522 | ||
Dr. Raymond Waldo | Dr. Raymond Waldo | ||
Southern California Edison Company | Southern California Edison Company | ||
San Onofre Nuclear Generating Station | San Onofre Nuclear Generating Station | ||
P.O. Box 128 | P.O. Box 128 | ||
San Clemente, California 92674-0128 | San Clemente, California 92674-0128 | ||
A. Edward Scherer | A. Edward Scherer | ||
Southern California Edison | Southern California Edison | ||
San Onofre Nuclear Generating Station | San Onofre Nuclear Generating Station | ||
P.O. Box 128 | P.O. Box 128 | ||
San Clemente, California 92674-0128 | San Clemente, California 92674-0128 | ||
Joseph J. Wambold, Vice President | Joseph J. Wambold, Vice President | ||
Southern California Edison Company | Southern California Edison Company | ||
San Onofre Nuclear Generating Station | San Onofre Nuclear Generating Station | ||
P.O. Box 128 | P.O. Box 128 | ||
San Clemente, California 92764-0128 | San Clemente, California 92764-0128 | ||
Southern California Edison Company | Southern California Edison Company | ||
-4- | |||
bcc w/enclosure (via ADAMS e-mail distribution): | bcc w/enclosure (via ADAMS e-mail distribution): | ||
EECollins | EECollins | ||
| Line 141: | Line 145: | ||
FCDB | FCDB | ||
NBHolbrook | NBHolbrook | ||
RIV Materials Docket Files - 5th Floor | RIV Materials Docket Files - 5th Floor | ||
ADAMS: | ADAMS: :Yes | ||
:Publicly Available | 9No Initials: JVE | ||
DOCUMENT NAME: s:\dnms\fcdb\jve\So1-2003-010 jve.wpd final r:\_so1\So1-2003-10.wpd | :Publicly Available 9Non-Publicly Available | ||
9Sensitive | |||
:Non-Sensitive | |||
DOCUMENT NAME: s:\\dnms\\fcdb\\jve\\So1-2003-010 jve.wpd final r:\\_so1\\So1-2003-10.wpd | |||
RIV:DNMS:FCDB | |||
FCDB | |||
FCDB | |||
FCDB | |||
JVEverett | |||
EMGarcia | |||
RJEvans | |||
TWDexter | |||
/RA/ | |||
OFFICIAL RECORD COPY | /RA JVEverett via E/ | ||
/RA JVEverett via E/ | |||
/RA JVEverett via E/ | |||
12/18/03 | |||
12/22/03 | |||
12/18/03 | |||
12/18/03 | |||
NMSS:DWM:HLWB | |||
NMSS:SFPO | |||
DRP:PBC | |||
DRP:PBC | |||
JDParrott | |||
RRTemps | |||
JFMelfi | |||
MASitek | |||
/RA JVEverett via E/ | |||
/RA JVEverett via E/ | |||
/RA JVEverett via E/ | |||
/RA JVEverett via E/ | |||
12/16/03 | |||
12/17/03 | |||
12/15/03 | |||
1/6/04 | |||
DRP:PBC | |||
DRS:EMB | |||
NMSS:SFPO | |||
C:FCDB | |||
RVAzua | |||
WCSifre | |||
ABBarto | |||
DBSpitzberg | |||
/RA JVEverett via E/ | |||
/RA JVEverett via E/ | |||
/RA JVEverett via E/ | |||
/RA/ | |||
12/29/03 | |||
12/18/03 | |||
12/30/03 | |||
1/6/04 | |||
OFFICIAL RECORD COPY | |||
T=Telephone E=E-mail F=Fax | |||
ENCLOSURE | |||
U.S. NUCLEAR REGULATORY COMMISSION | |||
REGION IV | |||
Docket Nos.: 50-206; 50-361; 50-362; 72-41 | Docket Nos.: | ||
50-206; 50-361; 50-362; 72-41 | |||
License Nos.: DPR-13; NPF-10; NPF-15 | License Nos.: DPR-13; NPF-10; NPF-15 | ||
Report No: | Report No: | ||
Licensee: | 50-206/03-10; 50-361/03-10; 50-362/03-10; 72-41/03-01 | ||
Licensee: | |||
Southern California Edison Co. | |||
Facility: | P.O. Box 128 | ||
Location: | San Clemente, California 92674 | ||
Dates: | Facility: | ||
San Onofre Nuclear Generating Station | |||
Location: | |||
San Clemente, California | |||
Dates: | |||
Inspectors: | June 26 - 28, 2003 (Heavy loads demonstration) | ||
August 4 - 8, 2003 (Pre-operational demonstration - Initial Inspection) | |||
August 18 - 19, 2003 (Pre-operational demonstration - Final) | |||
September 10 - 15, 2003 (First cask loading - Initial Inspection) | |||
September 28 - October 1, 2003 (First cask loading - Final) | |||
Inspectors: | |||
J. V. Everett, Team Leader, Region IV | |||
R. R. Temps, Safety Inspector, NRC Spent Fuel Project Office | |||
J. F. Melfi, Resident Inspector, Palo Verde Nuclear Station | |||
R. J. Evans, P.E., C.H.P, Senior Health Physicist, Region IV | |||
J. D. Parrott, Senior On-Site Representative, NRC Las Vegas Office | |||
M. A. Sitek, Resident Inspector, San Onofre Nuclear Station | |||
W. C. Sifre, Reactor Inspector, Region IV | |||
A. B. Barto, Nuclear Engineer, NRC Spent Fuel Project Office | |||
R. V. Azua, Project Engineer, Region IV | |||
T. W. Dexter, Security Consultant | |||
E. M. Garcia, Health Physicist, Region IV | |||
Approved By: D. Blair Spitzberg, Ph.D., Chief Fuel Cycle/Decommissioning Branch | Approved By: D. Blair Spitzberg, Ph.D., Chief Fuel Cycle/Decommissioning Branch | ||
Attachment 1: Supplemental Information | Attachment 1: Supplemental Information | ||
Attachment 2: Inspector Notes | Attachment 2: Inspector Notes | ||
ADAMS Entry: IR05000206-03-010; 05000361-03-010; 05000362-03-010; 072000041-03- | ADAMS Entry: IR05000206-03-010; 05000361-03-010; 05000362-03-010; 072000041-03- | ||
01 on 08/4/2003 - 10/01/2003; Southern California Edison Co., San Onofre | |||
Nuclear Generating Station; Units 1, 2, 3. ISFSI Report. No violations. | |||
-2- | |||
EXECUTIVE SUMMARY | |||
San Onofre Nuclear Generating Station | |||
NRC Inspection Report 50-206/03-10; 50-361/03-10; 50-362/03-10; 72-41/03-01 | |||
On October 3, 2003, Southern California Edison loaded the first canister of San Onofre Nuclear | On October 3, 2003, Southern California Edison loaded the first canister of San Onofre Nuclear | ||
Generating Station (SONGS) Unit 1 spent fuel into their Independent Spent Fuel Storage | Generating Station (SONGS) Unit 1 spent fuel into their Independent Spent Fuel Storage | ||
Installation (ISFSI). The ISFSI was located at the SONGS site adjacent to the Unit 1 reactor | Installation (ISFSI). The ISFSI was located at the SONGS site adjacent to the Unit 1 reactor | ||
facility. The Advanced NUHOMS Horizontal Modular Storage System was selected by Southern | facility. The Advanced NUHOMS Horizontal Modular Storage System was selected by Southern | ||
California Edison to store the SONGS spent fuel under a general license. This cask system had | California Edison to store the SONGS spent fuel under a general license. This cask system had | ||
been approved for storage of irradiated nuclear fuel by the Nuclear Regulatory Commission (NRC) | been approved for storage of irradiated nuclear fuel by the Nuclear Regulatory Commission (NRC) | ||
under Certificate of Compliance No. 72-1029. Transnuclear, Inc., was the cask vendor for this | under Certificate of Compliance No. 72-1029. Transnuclear, Inc., was the cask vendor for this | ||
system. | system. | ||
Southern California Edison planned to move all Unit 1 spent fuel to the ISFSI by the spring | Southern California Edison planned to move all Unit 1 spent fuel to the ISFSI by the spring | ||
of 2005. This will involve moving 207 spent fuel assemblies from the Unit 1 spent fuel pool, | of 2005. This will involve moving 207 spent fuel assemblies from the Unit 1 spent fuel pool, | ||
70 assemblies from the Unit 2 pool and 118 assemblies from the Unit 3 pool. Seventeen canisters | 70 assemblies from the Unit 2 pool and 118 assemblies from the Unit 3 pool. Seventeen canisters | ||
will be needed to hold the 395 Unit 1 spent fuel assemblies. The first five canisters to be loaded | will be needed to hold the 395 Unit 1 spent fuel assemblies. The first five canisters to be loaded | ||
into the ISFSI would remove all the Unit 1 spent fuel from the Unit 3 pool. The ISFSI pad currently | into the ISFSI would remove all the Unit 1 spent fuel from the Unit 3 pool. The ISFSI pad currently | ||
constructed at SONGS can accommodate 31 canisters. Each canister can hold 24 spent fuel | constructed at SONGS can accommodate 31 canisters. Each canister can hold 24 spent fuel | ||
assemblies. The ISFSI pad will be expanded as additional space is needed and as dismantlement | assemblies. The ISFSI pad will be expanded as additional space is needed and as dismantlement | ||
activities at Unit 1 provide more space for ISFSI construction. | activities at Unit 1 provide more space for ISFSI construction. | ||
The inspections conducted by the NRC of Southern California Edisons dry cask storage project | The inspections conducted by the NRC of Southern California Edisons dry cask storage project | ||
provided a comprehensive evaluation of the licensees compliance with the requirements in the | provided a comprehensive evaluation of the licensees compliance with the requirements in the | ||
NUHOMS Certificate of Compliance No. 72-1029, Technical Specifications, Final Safety Analysis | NUHOMS Certificate of Compliance No. 72-1029, Technical Specifications, Final Safety Analysis | ||
Report, NRCs Safety Evaluation Report and 10 CFR Part 72. The inspection consisted of a team | Report, NRCs Safety Evaluation Report and 10 CFR Part 72. The inspection consisted of a team | ||
of eleven NRC inspectors performing inspections of various phases of activities over a period from | of eleven NRC inspectors performing inspections of various phases of activities over a period from | ||
June 26 through October 1, 2003. Sixteen technical areas were reviewed during the inspections | June 26 through October 1, 2003. Sixteen technical areas were reviewed during the inspections | ||
including such topical areas as fuel verification, security, radiological programs, quality assurance, | including such topical areas as fuel verification, security, radiological programs, quality assurance, | ||
training, and heavy loads. During the inspections, the licensee conducted numerous | training, and heavy loads. During the inspections, the licensee conducted numerous | ||
demonstrations for NRC observance related to the operations of equipment and the | demonstrations for NRC observance related to the operations of equipment and the | ||
implementation of procedures to verify that all required aspects of the use of the NUHOMS cask | implementation of procedures to verify that all required aspects of the use of the NUHOMS cask | ||
system at the SONGS site had been adequately incorporated into site programs and procedures. | system at the SONGS site had been adequately incorporated into site programs and procedures. | ||
The licensee had integrated together many of the programs for the Part 50 reactor operations and | The licensee had integrated together many of the programs for the Part 50 reactor operations and | ||
the Part 72 ISFSI operations to allow for an efficient use of site resources. | the Part 72 ISFSI operations to allow for an efficient use of site resources. | ||
During the various pre-operational demonstrations and during the loading of the first canister, the | During the various pre-operational demonstrations and during the loading of the first canister, the | ||
SONGS workers demonstrated a comprehensive knowledge of the technical requirements related | SONGS workers demonstrated a comprehensive knowledge of the technical requirements related | ||
to the loading and operations of an ISFSI and for compliance with 10 CFR Part 72. Much of this | to the loading and operations of an ISFSI and for compliance with 10 CFR Part 72. Much of this | ||
advanced knowledge of ISFSI operations was a result of experience gained by Southern | advanced knowledge of ISFSI operations was a result of experience gained by Southern | ||
California Edison personnel who provided manpower support to the Rancho Seco | California Edison personnel who provided manpower support to the Rancho Seco | ||
decommissioned reactor for their ISFSI project. Rancho Seco completed the loading of | decommissioned reactor for their ISFSI project. Rancho Seco completed the loading of | ||
21 canisters on August 2002. Southern California Edison personnel were a key part of that | 21 canisters on August 2002. Southern California Edison personnel were a key part of that | ||
successful program. The knowledge and experience gained by the Southern California Edison | successful program. The knowledge and experience gained by the Southern California Edison | ||
personnel while at Rancho Seco was brought back and integrated into the SONGS program. This | personnel while at Rancho Seco was brought back and integrated into the SONGS program. This | ||
-3- | |||
was obvious during discussions and interviews of the SONGS personnel which demonstrated | was obvious during discussions and interviews of the SONGS personnel which demonstrated | ||
actual experience and knowledge of the issues that must be addressed in order to successfully | actual experience and knowledge of the issues that must be addressed in order to successfully | ||
load spent fuel into the ISFSI. | load spent fuel into the ISFSI. | ||
During the loading of the first SONGS canister, the NRC provided 24-hour coverage of loading | During the loading of the first SONGS canister, the NRC provided 24-hour coverage of loading | ||
operations for all critical tasks at the Unit 3 fuel handling building. This included fuel movement, | operations for all critical tasks at the Unit 3 fuel handling building. This included fuel movement, | ||
heavy lifts of the loaded canister, initial radiation surveys of the loaded cask, welding of the lids, | heavy lifts of the loaded canister, initial radiation surveys of the loaded cask, welding of the lids, | ||
vacuum drying and helium backfill of the canister. Workers were knowledgeable of their assigned | vacuum drying and helium backfill of the canister. Workers were knowledgeable of their assigned | ||
tasks and had been well trained. Problems and issues were quickly identified and effectively | tasks and had been well trained. Problems and issues were quickly identified and effectively | ||
resolved. Shift supervision provided good oversight of work activities and workers always knew | resolved. Shift supervision provided good oversight of work activities and workers always knew | ||
who was in charge. Procedures were closely followed and a good questioning attitude was | who was in charge. Procedures were closely followed and a good questioning attitude was | ||
demonstrated by all employees. There was good communications between the workers. Overall, | demonstrated by all employees. There was good communications between the workers. Overall, | ||
the licensees staff was well trained and highly motivated to perform work safely and in compliance | the licensees staff was well trained and highly motivated to perform work safely and in compliance | ||
with the procedural requirements. The management team responsible for the ISFSI project had | with the procedural requirements. The management team responsible for the ISFSI project had | ||
worked hard to develop and implement a comprehensive program that would provide for the safe | worked hard to develop and implement a comprehensive program that would provide for the safe | ||
operations of moving spent fuel at the SONGS site. | operations of moving spent fuel at the SONGS site. | ||
Details related to the 16 technical areas reviewed during this inspection are provided as | Details related to the 16 technical areas reviewed during this inspection are provided as | ||
Attachment 2 to this inspection report. The following provides a summary of the findings of this | Attachment 2 to this inspection report. The following provides a summary of the findings of this | ||
inspection. | inspection. | ||
Vacuum Drying, Helium Backfill and Helium Testing | Vacuum Drying, Helium Backfill and Helium Testing | ||
! | ! | ||
Vacuum drying time limits established in Technical Specification 3.1.1 had been | |||
incorporated into the licensees procedures. Canisters with a heat load greater than | |||
12 kW were required to be vacuum dried within a specific time frame. The licensees | |||
procedure included provisions for establishing a helium environment in the canister or re- | |||
flooding the canister, as required by the technical specification, if the time limit was not | |||
! | met. | ||
! | |||
The licensee had implemented a stepped vacuum drying process consistent with the | |||
requirements in Technical Specification 3.1.1. This stepped process of lowering the | |||
pressure in the canister to certain predetermined levels and holding at that level for a | |||
period of time was intended to reduce the likelihood of ice blockage in the system lines. | |||
The final vacuum drying pressure requirement for the canister was 3 torr. The licensees | |||
! | procedures specified a value of 2.8 torr to account for instrument error and to provide an | ||
extra margin for compliance. | |||
! | |||
Helium backfill pressure requirements established in Technical Specification 3.1.2 had | |||
! | been incorporated into the licensees procedures. Provisions for documenting the final | ||
helium backfill pressure reading was provided in the procedure, including independent | |||
verification and sign-off by quality control personnel. | |||
! | |||
Helium leak rate testing of the inner lid weld and the vent/siphon port cover welds required | |||
by Technical Specification 3.1.3 had been incorporated into the licensees procedures. | |||
Procedural requirements included specifications for the helium to be $99 percent pure and | |||
-4- | |||
the leak rate to be #10-7 standard cubic centimeters/second. Procedures also required | |||
helium leak test personnel to be qualified to the standards in SNT-TC-1 Personnel | |||
Qualification and Certification of Nondestructive Testing. | |||
Emergency Planning | Emergency Planning | ||
! | ! | ||
Emergency planning provisions for the ISFSI had been incorporated into the site-wide | |||
emergency plan. This included specific emergency action levels for fires, loss of canister | |||
! | integrity and security events. | ||
! | |||
The ISFSI design provided for accessability by emergency personnel and vehicles. The | |||
licensee maintained their own site fire and medical response capability. Offsite fire, | |||
security and medical support organizations were available to augment the site emergency | |||
organization. | |||
Fire Protection | Fire Protection | ||
! | ! | ||
The ISFSI had been incorporated into the San Onofre Updated Fire Hazards Analysis. | |||
Administrative controls were established to limit the quantity of combustible and flammable | |||
! | liquids around the ISFSI and near the transport path during movement of the canister. | ||
! | |||
Analysis had been completed to evaluate the effect on the ISFSI of site specific explosive | |||
hazards and to confirm that the design of the ISFSI was adequate for the postulated | |||
external pressure levels that could result from an explosion. | |||
Fuel Verification | Fuel Verification | ||
! | ! | ||
The SONGS Unit 1 spent fuel was stored in four locations: 270 assemblies at the General | |||
Electric spent fuel storage pool located in Morris, Illinois; 207 assemblies in the SONGS | |||
Unit 1 spent fuel pool; 70 assemblies in the SONGS Unit 2 spent fuel pool; and 118 | |||
assemblies in the SONGS Unit 3 spent fuel pool. The first loading campaign will load the | |||
! | Unit 1 spent fuel stored in the Unit 3 spent fuel pool. This will require five canisters. | ||
! | |||
The requirements in Certificate of Compliance No. 1029 for the type of fuel that can be | |||
stored in the Advanced NUHOMS 24PT1 canisters was evaluated against the SONGS | |||
Unit 1 spent fuel planned for loading in the first five canisters. Criteria included type of | |||
! | fuel, cladding, decay heat, burn-up, neutron/gamma source strength, cooling time and | ||
enrichment. All spent fuel assemblies met the technical specification requirements. | |||
! | |||
Twenty-seven Unit 1 fuel assemblies had been identified as damaged. Of these, four | |||
were in the Unit 3 spent fuel pool and will be included in the first loading campaign of five | |||
canisters. Damaged fuel assembles were required to be placed in special failed fuel cans | |||
inside the canisters. Criteria used by the licensee for identifying which fuel assemblies | |||
were damaged was consistent with NRC guidance. | |||
-5- | |||
! | ! | ||
The licensee had established provisions for independent verification of the correct loading | |||
of the canister. This included videotaping the location of the spent fuel after loading in the | |||
! | canister. | ||
! | |||
Because the NUHOMS canisters were inserted into the concrete storage modules | |||
horizontally, special center of gravity considerations for the canisters were necessary to | |||
prevent rotation of the canister during insertion into the concrete storage module. | |||
Technical specifications required the center of gravity of the loaded canister to be within | |||
0.1" of the canisters radial center of gravity. Licensee calculations for the first five | |||
canisters demonstrated compliance with this limit. The largest deviation from the radial | |||
center of gravity was 0.0042". | |||
Compliance with 10 CFR Part 72 General License Requirements | Compliance with 10 CFR Part 72 General License Requirements | ||
! | ! | ||
The licensee evaluated the bounding environmental conditions specified in the NUHOMS | |||
Final Safety Analysis Report and Certificate of Compliance No. 1029 technical | |||
specifications against the conditions at the SONGS site. This included: tornados/high | |||
winds, flood, seismic events, snow/ice loading, tsunami, lightning, burial under debris, | |||
normal and abnormal temperatures, and fires/explosions. The site environmental | |||
! | conditions at the SONGS ISFSI were bounded by the NUHOMS cask design parameters. | ||
! | |||
Radiation levels at the ISFSI were calculated for workers during loading operations and | |||
routine surveillance activities. Doses were calculated for the controlled area boundary. | |||
Doses at the controlled area boundary were projected to be 1 mrem/year, well below the | |||
10 CFR 72.104 limit of 25 mrem/year. Projected worker doses to conduct the daily visual | |||
inspection were 172 millirem/year. Weekly radiation surveys of the ISFSI could add | |||
! | 49 millirem/year. A conservative estimate for loading a cask was determined to be | ||
3117 millirem per canister loading. | |||
! | |||
The licensee performed an evaluation of the site programs that could be impacted by the | |||
addition of an ISFSI. The evaluation included the radiation protection program, emergency | |||
! | planning program, quality assurance program, training program and the reactor technical | ||
specifications and Part 50 license. Revisions to the programs to incorporate the ISFSI | |||
were identified and implemented. | |||
! | |||
The NUHOMS Certificate of Compliance and Final Safety Analysis Report had been | |||
reviewed by the licensee to verify that the design basis for the NUHOMS cask system and | |||
the conditions and requirements in the Certificate of Compliance and Final Safety Analysis | |||
Report were met. | |||
Heavy Loads | Heavy Loads | ||
! | ! | ||
The licensee had incorporated the special requirements related to the ISFSI project into | |||
the site heavy loads programs and procedures. Crane operators interviewed during the | |||
ISFSI inspections were knowledgeable of the special handling requirements related to the | |||
heavy spent fuel casks. | |||
-6- | |||
! | ! | ||
Special lifting device height limits and temperature restrictions during movement of the | |||
casks had been incorporated into the licensees procedures consistent with the | |||
requirements in the Certificate of Compliance. This included the requirement to perform | |||
! | an inspection of the cask for damage after any drop of 15" or higher. | ||
! | |||
The maximum weight of the loaded transfer cask had been determined by the licensee to | |||
verify the adequacy of the lift capability of the cranes planned for use in moving the spent | |||
fuel. A loaded cask being removed from the spent fuel pool represented the maximum | |||
weight to be lifted and exceeded the lifting capacity of the current Unit 1 crane. The | |||
licensee had purchased new single failure proof cranes for installation and use during the | |||
cask loading operations. The Unit 3 crane was rated at 125 tons. The Unit 1 crane would | |||
! | be up-rated from 100 tons to 105 tons to account for the estimated 104.1 ton weight of the | ||
loaded cask. | |||
! | |||
A safe loads path had been identified and analyzed for moving the spent fuel from the | |||
spent fuel pool to the ISFSI. Provisions were established in procedures and through the | |||
use of limit switches to prevent the crane from moving the loaded cask outside the | |||
! | boundaries of the safe load path while in the fuel building. Calculations were performed | ||
for the roadway between the plant and the ISFSI to verify that the path was structurally | |||
capable of handling the weight of the loaded transfer cask and trailer. | |||
! | ! | ||
The licensees heavy loads procedural requirements related to the transfer cask trunnions | |||
and the slings used for lifting the canister lid were verified against industry standards and | |||
manufacturer requirements for load tests, safety margins and inspection/maintenance. | |||
! | |||
The adequacy of the transport trailer for the expected weight of a loaded canister and the | |||
ability of the transport trailer to safely secure and move the cask to the ISFSI was verified. | |||
Pad/Storage Modules | Pad/Storage Modules | ||
! | ! | ||
Requirements in the Final Safety Analysis Report related to the placement of the storage | |||
modules on the ISFSI pad and the module-to-module connections required for the high | |||
! | seismic conditions at the SONGS site were being implemented. | ||
! | |||
The concrete storage module thermal monitoring program had been incorporated into | |||
! | procedures. This included the daily monitoring of the storage module temperature and the | ||
daily verification that the air inlets and outlets were free from debris. | |||
! | |||
The thickness requirements for the concrete storage module roof and shield walls to | |||
! | ensure radiological levels would be below regulatory limits were verified by direct | ||
observation of the storage modules under construction and a review of the design | |||
drawings. | |||
! | |||
The seismic design of the ISFSI pad to meet the potential earthquake intensity at the | |||
SONGS site and to address liquefaction of the soil under the pad was inspected by the | |||
-7- | |||
NRC on April 9, 2002, and documented in Inspection Report 50-206/02-07;72-41/02-01 | |||
issued May 21, 2002 (NRC Adams Document ML021410532). | |||
Pre-Operational Testing | Pre-Operational Testing | ||
! | ! | ||
The licensee successfully completed all the required pre-operational test requirements | |||
specified by the Certificate of Compliance. This include the loading, welding, drying, and | |||
backfilling of a canister and the unloading of a sealed canister. A weighted canister was | |||
used to demonstrate heavy load activities, transport between the Unit 3 facility and the | |||
ISFSI and insertion/removal of a canister into the concrete storage module. | |||
Procedures and Technical Specification Requirements | Procedures and Technical Specification Requirements | ||
! | ! | ||
The licensee had developed the required operating procedures and programs required by | |||
! | the Certificate of Compliance. | ||
! | |||
The adequacy of the level of detail in the procedures was verified by reviewing | |||
requirements in the Final Safety Analysis Report related to handling the cask at the spent | |||
fuel pool. All requirements reviewed had been incorporated as operational steps in the | |||
licensees procedures. | |||
Quality Assurance | Quality Assurance | ||
! | ! | ||
The licensee had implemented their approved reactor facility Part 50 quality assurance | |||
program for the activities associated with the ISFSI. Effective implementation of the | |||
program was observed for all phases of ISFSI activities including procurement, control of | |||
measuring equipment, corrective actions, design control, receipt inspections, storage and | |||
! | audits. | ||
! | |||
Southern California Edison was constructing their canisters onsite as a fabricator to | |||
Transnuclear, Inc. An inspection conducted by the NRCs Spent Fuel Project Office on | |||
March 3-6, 2003, and documented in Inspection Report 72-1029/2003201 issued March 6, | |||
! | 2003, found all work activities were being properly controlled under the Southern | ||
California Edison quality assurance program (NRC Adams Document ML030940163). | |||
! | |||
The licensees quality assurance organization had implemented a comprehensive quality | |||
assurance audit and inspection program that was responsive to applying additional | |||
oversight to selected work activities where problems were being identified. This was most | |||
evident in the decision to place onsite quality assurance inspectors at one of the vendors | |||
to ensure the quality of the concrete storage modules. | |||
Radiation Protection | Radiation Protection | ||
! | ! | ||
Requirements for radiological and contamination surveys described in the Final Safety | |||
Analysis Report had been incorporated into the licensees health physics program for the | |||
-8- | |||
loading of the casks. This included special precautions related to potential high dose rate | |||
work activities. | |||
! | ! | ||
Calculations performed by the licensee to evaluate the potential radiological doses during | |||
normal operations at the ISFSI and during an accident demonstrated compliance with the | |||
! | limits specified in 10 CFR 72.104 and 10 CFR 72.106. | ||
! | |||
The licensee had identified the reactor Part 50 exclusion area as the controlled area for | |||
the ISFSI. The distance from the ISFSI to the exclusion area boundary met the required | |||
minimum distance for a controlled area around an ISFSI specified in 10 CFR 72.106. | |||
! | Southern California Edison was authorized, through a signed easement, to remove | ||
personnel from the exclusion area in the event of an emergency. | |||
! | ! | ||
The licensee had determined a dose conversion factor for neutron doses to workers to | |||
account for the neutron spectrum expected with the loaded canisters. | |||
! | |||
Environmental monitoring for the ISFSI had been incorporated into the existing reactor | |||
environmental monitoring program. Additional thermoluminescent dosimeters had been | |||
placed around the ISFSI to monitor the increase in radiation levels expected due to the | |||
storage of the spent fuel. Dosimeters had been placed in service in 2001 and had been | |||
used to collect background data that could be compared with the ongoing monitoring after | |||
spent fuel was placed in the ISFSI to determine the level of increase in radiation levels. | |||
Records | Records | ||
! | ! | ||
A records system had been established by the licensee under their reactor Part 50 quality | |||
assurance program. Records required for retention by 10 CFR 72.174, 10 CFR 72.212, | |||
10 CFR 72.234 and the Final Safety Analysis Report had been identified in the licensees | |||
! | program as required records for retention. | ||
! | |||
An optical disk system was being used for permanent storage of the records. The quality | |||
! | assurance plan required that ISFSI related records be retained for the duration of the | ||
license or certificate of compliance. | |||
! | |||
The required 90-day notification prior to loading the first cask had been made to the NRC | |||
on May 5, 2003. The requirement to provide notice to the NRC within 30 days of use of a | |||
cask had been incorporated into the appropriate procedure. | |||
Safety Reviews | Safety Reviews | ||
! | ! | ||
Changes to the site related to the construction and operation of the ISFSI were being | |||
evaluated in accordance with 10 CFR 72.48 and 10 CFR 50.59 requirements. No issues | |||
were identified during the review of selected safety screenings. | |||
-9- | |||
Security | Security | ||
! | ! | ||
Security for the ISFSI had been integrated into the overall site security program. The | |||
security plan and procedures had been revised to incorporate specific provisions for | |||
responding to a security threat at the ISFSI. Arrangements had been established to obtain | |||
! | support from local law enforcement agencies during a security event. | ||
! | |||
! | Security force personnel were trained on security requirements for the ISFSI including the | ||
implementation of access controls, key controls and compensatory actions. | |||
! | ! | ||
Physical security systems had been installed and were operational. This included the | |||
protected area fence, lighting systems, intrusion detection systems and backup power. | |||
! | |||
Arrangements had been made for a moving protected area around the cask during | |||
transport from Unit 3 to the ISFSI. | |||
Training | Training | ||
! | ! | ||
The licensee had implemented a training program for workers assigned to the ISFSI that | |||
incorporated the topics listed in the technical specifications and provided for | |||
! | documentation of completion of training and job task qualification. | ||
! | |||
Specific training needs had been identified and incorporated into training for operations, | |||
! | maintenance and health physics personnel as required by the Final Safety Analysis | ||
Report. | |||
! | |||
A computerized training records system had been established by the licensee to track | |||
completion of training by individuals. | |||
Welding/Nondestructive Testing | Welding/Nondestructive Testing | ||
! | ! | ||
Requirements for hydrogen monitoring during welding of the inner cask lid had been | |||
incorporated into the procedures. The alarm set point had been established at 50 percent | |||
of a lower explosive limit for hydrogen. During welding of the inner lid welds, hydrogen | |||
! | levels were measured from 3 percent to 8.4 percent of the lower explosive limit. | ||
! | |||
The licensee was performing the required dye penetrant examinations of welds on the | |||
canister in accordance with the Final Safety Analysis Report. Dye penetrant examination | |||
! | procedures had been developed for both normal temperatures and for the higher | ||
temperatures that could be encountered with the hotter casks. | |||
! | ! | ||
Nondestructive examination requirements for welds were adequately specified in | |||
procedures and on drawings. | |||
! | |||
Nondestructive examination personnel were qualified to the requirements in SNT-TC-1A | |||
for performing weld examinations of the type required on the canisters. | |||
-10- | |||
Exit Meetings | Exit Meetings | ||
The inspectors presented the inspection results to members of licensee management at the | The inspectors presented the inspection results to members of licensee management at the | ||
conclusion of the various key stages of the inspection on August 8, August 19 and October 1, | conclusion of the various key stages of the inspection on August 8, August 19 and October 1, | ||
2003. The licensee acknowledged the findings presented. The licensee did not identify as | 2003. The licensee acknowledged the findings presented. The licensee did not identify as | ||
proprietary any information provided to, or reviewed by, the inspectors that had been incorporated | proprietary any information provided to, or reviewed by, the inspectors that had been incorporated | ||
into the inspection effort. | into the inspection effort. | ||
ATTACHMENT 1 | |||
SUPPLEMENTAL INFORMATION | |||
PARTIAL LIST OF PERSONS CONTACTED | |||
Licensee | Licensee | ||
J. Agosti, Lead Auditor, Procurement Quality | J. Agosti, Lead Auditor, Procurement Quality | ||
| Line 552: | Line 656: | ||
D. Pilmer, Manager, Dry Cask Fuel Storage Licensing | D. Pilmer, Manager, Dry Cask Fuel Storage Licensing | ||
-2- | |||
D. Ripley, Manager, Maintenance Training | D. Ripley, Manager, Maintenance Training | ||
M. Russell, Technical Specialist | M. Russell, Technical Specialist | ||
| Line 572: | Line 676: | ||
Transnuclear, Inc. | Transnuclear, Inc. | ||
U. Farradj, Project Manager | U. Farradj, Project Manager | ||
INSPECTION PROCEDURES USED | |||
60854 | 60854 | ||
60855 | Pre-operational Testing of an ISFSI | ||
60856 | 60855 | ||
60857 | Operations of an ISFSI | ||
81001 | 60856 | ||
Review of 10 CFR 72.212(b) Evaluations | |||
60857 | |||
Review of 10 CFR 72.48 Evaluations | |||
81001 | |||
ISFSI Security | |||
ITEMS OPENED AND CLOSED | |||
Opened | Opened | ||
None | None | ||
| Line 586: | Line 695: | ||
None | None | ||
-3- | |||
LIST OF ACRONYMS USED | |||
ALARA | ALARA | ||
ANSI | as low as reasonably achievable | ||
CFR | ANSI | ||
DAC | American National Standards Institute, Inc | ||
DSC | CFR | ||
FSAR | code of federal regulations | ||
GWd/MTU | DAC | ||
ISFSI | derived air concentration | ||
kW | DSC | ||
MOX | dry shielded canister | ||
NDE | FSAR | ||
NRC | final safety analysis report | ||
psi | GWd/MTU | ||
psig | gigawatt days/metric ton uranium | ||
QA | ISFSI | ||
SAR | independent spent fuel storage installation | ||
SNT-TC | kW | ||
SONGS | kilowatt | ||
std-cc/sec standard cubic centimeters/second | MOX | ||
Tech Specs technical specifications | mixed-oxide fuel | ||
UFSAR | NDE | ||
nondestructive examinations | |||
NRC | |||
Nuclear Regulatory Commission | |||
psi | |||
pounds/in2 | |||
psig | |||
pounds/in2 (gauge) | |||
QA | |||
quality assurance | |||
SAR | |||
safety analysis report (same as final safety analysis report) | |||
SNT-TC | |||
Society of Nondestructive Testing-Technical Council | |||
SONGS | |||
San Onofre Generating Station | |||
std-cc/sec | |||
standard cubic centimeters/second | |||
Tech Specs | |||
technical specifications | |||
UFSAR | |||
updated final safety analysis report | |||
}} | }} | ||
Latest revision as of 05:51, 16 January 2025
| ML040060764 | |
| Person / Time | |
|---|---|
| Site: | San Onofre |
| Issue date: | 01/06/2004 |
| From: | Spitzberg D NRC/RGN-IV/DNMS/FCDB |
| To: | Ray H Southern California Edison Co |
| References | |
| -RFPFR IR-03-001, IR-03-010 | |
| Download: ML040060764 (17) | |
See also: IR 05000206/2003010
Text
January 6, 2004
Mr. Harold B. Ray, Executive Vice President
Southern California Edison Co.
San Onofre Nuclear Generating Station
P.O. Box 128
San Clemente, California 92674-0128
SUBJECT:
NRC INSPECTION REPORT 50-206/03-10; 50-361/03-10; 50-362/03-10;
72-41/03-01 FOR THE PRE-OPERATIONAL TESTING AND FIRST CANISTER
LOADING AT THE INDEPENDENT SPENT FUEL STORAGE INSTALLATION
Dear Mr. Ray:
NRC inspections were conducted between June 26 and October 1, 2003, at your San Onofre
nuclear generating station to evaluate the dry cask storage activities for your Independent Spent
Fuel Storage Installation (ISFSI). These inspections included observation of activities associated
with your pre-operational testing program and the loading of your first canister. The inspections
were conducted to confirm compliance of your program and activities with the requirements
specified in the license, technical specifications, Final Safety Analysis Report, the NRCs Safety
Evaluation Report and 10 CFR Part 72. The enclosed report presents the results of these
inspections. The inspections found that activities were being performed in accordance with
procedural and regulatory requirements. No violations of NRC regulations were identified.
In accordance with 10 CFR 2.790 of the NRC's "Rules of Practice," a copy of this letter, its
enclosure, and your response (if any) will be made available electronically for public inspection in
the NRC Public Document Room or from the NRCs document system (ADAMS), accessible from
the NRC Web site at http://www.nrc.gov/reading-rm/adams.html. To the extent possible, your
response should not include any personal privacy, proprietary, or safeguards information so that it
can be made available to the Public without redaction.
Should you have any questions concerning this inspection, please contact the undersigned at
(817) 860-8191 or Mr. Vincent Everett, Senior Health Physicist, at (817) 860-8198.
Sincerely,
/RA/
D. Blair Spitzberg, Ph.D., Chief
Fuel Cycle and Decommissioning Branch
Docket Nos.: 50-206; 50-361; 50-362; 72-41
License Nos.: DPR-13; NPF-10; NPF-15
Southern California Edison Company
-2-
Enclosure:
NRC Inspection Report
50-206/03-10; 50-361/03-10; 50-362/03-10; 72-41/03-01
cc w/enclosure:
Dwight E. Nunn, Vice President
Southern California Edison Company
San Onofre Nuclear Generating Station
P.O. Box 128
San Clemente, California 92674-0128
Michael R. Olson
San Onofre Liaison
San Diego Gas & Electric Company
P.O. Box 1831
San Diego, California 92112-4150
Mayor
City of San Clemente
100 Avenida Presidio
San Clemente, California 92672
Chairman, Board of Supervisors
County of San Diego
1600 Pacific Highway, Room 335
San Diego, California 92101
Ed Bailey, Radiation Program Director
Radiologic Health Branch
State Department of Health Services
P.O. Box 942732 (MS 178)
Sacramento, California 94327-7320
David Spath, Chief
Division of Drinking Water and
Environmental Management
P.O. Box 942732
Sacramento, California 94234-7320
James D. Boyd, Commissioner
California Energy Commission
1516 Ninth Street (MS 34)
Sacramento, California 95814
Southern California Edison Company
-3-
Douglas K. Porter, Esq.
Southern California Edison Company
2244 Walnut Grove Avenue
Rosemead, California 91770
Gary L. Nolff
Power Projects/Contracts Manager
Riverside Public Utilities
2911 Adams Street
Riverside, California 92504
Eileen M. Teichert, Esq.
Supervising Deputy City Attorney
City of Riverside
3900 Main Street
Riverside, California 92522
Dr. Raymond Waldo
Southern California Edison Company
San Onofre Nuclear Generating Station
P.O. Box 128
San Clemente, California 92674-0128
A. Edward Scherer
Southern California Edison
San Onofre Nuclear Generating Station
P.O. Box 128
San Clemente, California 92674-0128
Joseph J. Wambold, Vice President
Southern California Edison Company
San Onofre Nuclear Generating Station
P.O. Box 128
San Clemente, California 92764-0128
Southern California Edison Company
-4-
bcc w/enclosure (via ADAMS e-mail distribution):
EECollins
DBSpitzberg
KMKennedy
SCOConnor
ERZiegler
CCOsterholtz
MASitek
RRTemps
ABBarto
JFMelfi
JDParrott
RJEvans
WCSifre
RVAzua
TWDexter
EMGarcia
FCDB
NBHolbrook
RIV Materials Docket Files - 5th Floor
ADAMS: :Yes
9No Initials: JVE
- Publicly Available 9Non-Publicly Available
9Sensitive
- Non-Sensitive
DOCUMENT NAME: s:\\dnms\\fcdb\\jve\\So1-2003-010 jve.wpd final r:\\_so1\\So1-2003-10.wpd
RIV:DNMS:FCDB
FCDB
FCDB
FCDB
JVEverett
EMGarcia
RJEvans
TWDexter
/RA/
/RA JVEverett via E/
/RA JVEverett via E/
/RA JVEverett via E/
12/18/03
12/22/03
12/18/03
12/18/03
NMSS:DWM:HLWB
NMSS:SFPO
DRP:PBC
DRP:PBC
JDParrott
RRTemps
JFMelfi
MASitek
/RA JVEverett via E/
/RA JVEverett via E/
/RA JVEverett via E/
/RA JVEverett via E/
12/16/03
12/17/03
12/15/03
1/6/04
DRP:PBC
DRS:EMB
NMSS:SFPO
C:FCDB
RVAzua
WCSifre
ABBarto
DBSpitzberg
/RA JVEverett via E/
/RA JVEverett via E/
/RA JVEverett via E/
/RA/
12/29/03
12/18/03
12/30/03
1/6/04
OFFICIAL RECORD COPY
T=Telephone E=E-mail F=Fax
ENCLOSURE
U.S. NUCLEAR REGULATORY COMMISSION
REGION IV
Docket Nos.:
50-206; 50-361; 50-362; 72-41
License Nos.: DPR-13; NPF-10; NPF-15
Report No:
50-206/03-10; 50-361/03-10; 50-362/03-10; 72-41/03-01
Licensee:
Southern California Edison Co.
P.O. Box 128
San Clemente, California 92674
Facility:
San Onofre Nuclear Generating Station
Location:
San Clemente, California
Dates:
June 26 - 28, 2003 (Heavy loads demonstration)
August 4 - 8, 2003 (Pre-operational demonstration - Initial Inspection)
August 18 - 19, 2003 (Pre-operational demonstration - Final)
September 10 - 15, 2003 (First cask loading - Initial Inspection)
September 28 - October 1, 2003 (First cask loading - Final)
Inspectors:
J. V. Everett, Team Leader, Region IV
R. R. Temps, Safety Inspector, NRC Spent Fuel Project Office
J. F. Melfi, Resident Inspector, Palo Verde Nuclear Station
R. J. Evans, P.E., C.H.P, Senior Health Physicist, Region IV
J. D. Parrott, Senior On-Site Representative, NRC Las Vegas Office
M. A. Sitek, Resident Inspector, San Onofre Nuclear Station
W. C. Sifre, Reactor Inspector, Region IV
A. B. Barto, Nuclear Engineer, NRC Spent Fuel Project Office
R. V. Azua, Project Engineer, Region IV
T. W. Dexter, Security Consultant
E. M. Garcia, Health Physicist, Region IV
Approved By: D. Blair Spitzberg, Ph.D., Chief Fuel Cycle/Decommissioning Branch
Attachment 1: Supplemental Information
Attachment 2: Inspector Notes
ADAMS Entry: IR05000206-03-010; 05000361-03-010; 05000362-03-010; 072000041-03-
01 on 08/4/2003 - 10/01/2003; Southern California Edison Co., San Onofre
Nuclear Generating Station; Units 1, 2, 3. ISFSI Report. No violations.
-2-
EXECUTIVE SUMMARY
San Onofre Nuclear Generating Station
NRC Inspection Report 50-206/03-10; 50-361/03-10; 50-362/03-10; 72-41/03-01
On October 3, 2003, Southern California Edison loaded the first canister of San Onofre Nuclear
Generating Station (SONGS) Unit 1 spent fuel into their Independent Spent Fuel Storage
Installation (ISFSI). The ISFSI was located at the SONGS site adjacent to the Unit 1 reactor
facility. The Advanced NUHOMS Horizontal Modular Storage System was selected by Southern
California Edison to store the SONGS spent fuel under a general license. This cask system had
been approved for storage of irradiated nuclear fuel by the Nuclear Regulatory Commission (NRC)
under Certificate of Compliance No. 72-1029. Transnuclear, Inc., was the cask vendor for this
system.
Southern California Edison planned to move all Unit 1 spent fuel to the ISFSI by the spring
of 2005. This will involve moving 207 spent fuel assemblies from the Unit 1 spent fuel pool,
70 assemblies from the Unit 2 pool and 118 assemblies from the Unit 3 pool. Seventeen canisters
will be needed to hold the 395 Unit 1 spent fuel assemblies. The first five canisters to be loaded
into the ISFSI would remove all the Unit 1 spent fuel from the Unit 3 pool. The ISFSI pad currently
constructed at SONGS can accommodate 31 canisters. Each canister can hold 24 spent fuel
assemblies. The ISFSI pad will be expanded as additional space is needed and as dismantlement
activities at Unit 1 provide more space for ISFSI construction.
The inspections conducted by the NRC of Southern California Edisons dry cask storage project
provided a comprehensive evaluation of the licensees compliance with the requirements in the
NUHOMS Certificate of Compliance No. 72-1029, Technical Specifications, Final Safety Analysis
Report, NRCs Safety Evaluation Report and 10 CFR Part 72. The inspection consisted of a team
of eleven NRC inspectors performing inspections of various phases of activities over a period from
June 26 through October 1, 2003. Sixteen technical areas were reviewed during the inspections
including such topical areas as fuel verification, security, radiological programs, quality assurance,
training, and heavy loads. During the inspections, the licensee conducted numerous
demonstrations for NRC observance related to the operations of equipment and the
implementation of procedures to verify that all required aspects of the use of the NUHOMS cask
system at the SONGS site had been adequately incorporated into site programs and procedures.
The licensee had integrated together many of the programs for the Part 50 reactor operations and
the Part 72 ISFSI operations to allow for an efficient use of site resources.
During the various pre-operational demonstrations and during the loading of the first canister, the
SONGS workers demonstrated a comprehensive knowledge of the technical requirements related
to the loading and operations of an ISFSI and for compliance with 10 CFR Part 72. Much of this
advanced knowledge of ISFSI operations was a result of experience gained by Southern
California Edison personnel who provided manpower support to the Rancho Seco
decommissioned reactor for their ISFSI project. Rancho Seco completed the loading of
21 canisters on August 2002. Southern California Edison personnel were a key part of that
successful program. The knowledge and experience gained by the Southern California Edison
personnel while at Rancho Seco was brought back and integrated into the SONGS program. This
-3-
was obvious during discussions and interviews of the SONGS personnel which demonstrated
actual experience and knowledge of the issues that must be addressed in order to successfully
load spent fuel into the ISFSI.
During the loading of the first SONGS canister, the NRC provided 24-hour coverage of loading
operations for all critical tasks at the Unit 3 fuel handling building. This included fuel movement,
heavy lifts of the loaded canister, initial radiation surveys of the loaded cask, welding of the lids,
vacuum drying and helium backfill of the canister. Workers were knowledgeable of their assigned
tasks and had been well trained. Problems and issues were quickly identified and effectively
resolved. Shift supervision provided good oversight of work activities and workers always knew
who was in charge. Procedures were closely followed and a good questioning attitude was
demonstrated by all employees. There was good communications between the workers. Overall,
the licensees staff was well trained and highly motivated to perform work safely and in compliance
with the procedural requirements. The management team responsible for the ISFSI project had
worked hard to develop and implement a comprehensive program that would provide for the safe
operations of moving spent fuel at the SONGS site.
Details related to the 16 technical areas reviewed during this inspection are provided as
Attachment 2 to this inspection report. The following provides a summary of the findings of this
inspection.
Vacuum Drying, Helium Backfill and Helium Testing
!
Vacuum drying time limits established in Technical Specification 3.1.1 had been
incorporated into the licensees procedures. Canisters with a heat load greater than
12 kW were required to be vacuum dried within a specific time frame. The licensees
procedure included provisions for establishing a helium environment in the canister or re-
flooding the canister, as required by the technical specification, if the time limit was not
met.
!
The licensee had implemented a stepped vacuum drying process consistent with the
requirements in Technical Specification 3.1.1. This stepped process of lowering the
pressure in the canister to certain predetermined levels and holding at that level for a
period of time was intended to reduce the likelihood of ice blockage in the system lines.
The final vacuum drying pressure requirement for the canister was 3 torr. The licensees
procedures specified a value of 2.8 torr to account for instrument error and to provide an
extra margin for compliance.
!
Helium backfill pressure requirements established in Technical Specification 3.1.2 had
been incorporated into the licensees procedures. Provisions for documenting the final
helium backfill pressure reading was provided in the procedure, including independent
verification and sign-off by quality control personnel.
!
Helium leak rate testing of the inner lid weld and the vent/siphon port cover welds required
by Technical Specification 3.1.3 had been incorporated into the licensees procedures.
Procedural requirements included specifications for the helium to be $99 percent pure and
-4-
the leak rate to be #10-7 standard cubic centimeters/second. Procedures also required
helium leak test personnel to be qualified to the standards in SNT-TC-1 Personnel
Qualification and Certification of Nondestructive Testing.
Emergency Planning
!
Emergency planning provisions for the ISFSI had been incorporated into the site-wide
emergency plan. This included specific emergency action levels for fires, loss of canister
integrity and security events.
!
The ISFSI design provided for accessability by emergency personnel and vehicles. The
licensee maintained their own site fire and medical response capability. Offsite fire,
security and medical support organizations were available to augment the site emergency
organization.
Fire Protection
!
The ISFSI had been incorporated into the San Onofre Updated Fire Hazards Analysis.
Administrative controls were established to limit the quantity of combustible and flammable
liquids around the ISFSI and near the transport path during movement of the canister.
!
Analysis had been completed to evaluate the effect on the ISFSI of site specific explosive
hazards and to confirm that the design of the ISFSI was adequate for the postulated
external pressure levels that could result from an explosion.
Fuel Verification
!
The SONGS Unit 1 spent fuel was stored in four locations: 270 assemblies at the General
Electric spent fuel storage pool located in Morris, Illinois; 207 assemblies in the SONGS
Unit 1 spent fuel pool; 70 assemblies in the SONGS Unit 2 spent fuel pool; and 118
assemblies in the SONGS Unit 3 spent fuel pool. The first loading campaign will load the
Unit 1 spent fuel stored in the Unit 3 spent fuel pool. This will require five canisters.
!
The requirements in Certificate of Compliance No. 1029 for the type of fuel that can be
stored in the Advanced NUHOMS 24PT1 canisters was evaluated against the SONGS
Unit 1 spent fuel planned for loading in the first five canisters. Criteria included type of
fuel, cladding, decay heat, burn-up, neutron/gamma source strength, cooling time and
enrichment. All spent fuel assemblies met the technical specification requirements.
!
Twenty-seven Unit 1 fuel assemblies had been identified as damaged. Of these, four
were in the Unit 3 spent fuel pool and will be included in the first loading campaign of five
canisters. Damaged fuel assembles were required to be placed in special failed fuel cans
inside the canisters. Criteria used by the licensee for identifying which fuel assemblies
were damaged was consistent with NRC guidance.
-5-
!
The licensee had established provisions for independent verification of the correct loading
of the canister. This included videotaping the location of the spent fuel after loading in the
canister.
!
Because the NUHOMS canisters were inserted into the concrete storage modules
horizontally, special center of gravity considerations for the canisters were necessary to
prevent rotation of the canister during insertion into the concrete storage module.
Technical specifications required the center of gravity of the loaded canister to be within
0.1" of the canisters radial center of gravity. Licensee calculations for the first five
canisters demonstrated compliance with this limit. The largest deviation from the radial
center of gravity was 0.0042".
Compliance with 10 CFR Part 72 General License Requirements
!
The licensee evaluated the bounding environmental conditions specified in the NUHOMS
Final Safety Analysis Report and Certificate of Compliance No. 1029 technical
specifications against the conditions at the SONGS site. This included: tornados/high
winds, flood, seismic events, snow/ice loading, tsunami, lightning, burial under debris,
normal and abnormal temperatures, and fires/explosions. The site environmental
conditions at the SONGS ISFSI were bounded by the NUHOMS cask design parameters.
!
Radiation levels at the ISFSI were calculated for workers during loading operations and
routine surveillance activities. Doses were calculated for the controlled area boundary.
Doses at the controlled area boundary were projected to be 1 mrem/year, well below the
10 CFR 72.104 limit of 25 mrem/year. Projected worker doses to conduct the daily visual
inspection were 172 millirem/year. Weekly radiation surveys of the ISFSI could add
49 millirem/year. A conservative estimate for loading a cask was determined to be
3117 millirem per canister loading.
!
The licensee performed an evaluation of the site programs that could be impacted by the
addition of an ISFSI. The evaluation included the radiation protection program, emergency
planning program, quality assurance program, training program and the reactor technical
specifications and Part 50 license. Revisions to the programs to incorporate the ISFSI
were identified and implemented.
!
The NUHOMS Certificate of Compliance and Final Safety Analysis Report had been
reviewed by the licensee to verify that the design basis for the NUHOMS cask system and
the conditions and requirements in the Certificate of Compliance and Final Safety Analysis
Report were met.
Heavy Loads
!
The licensee had incorporated the special requirements related to the ISFSI project into
the site heavy loads programs and procedures. Crane operators interviewed during the
ISFSI inspections were knowledgeable of the special handling requirements related to the
heavy spent fuel casks.
-6-
!
Special lifting device height limits and temperature restrictions during movement of the
casks had been incorporated into the licensees procedures consistent with the
requirements in the Certificate of Compliance. This included the requirement to perform
an inspection of the cask for damage after any drop of 15" or higher.
!
The maximum weight of the loaded transfer cask had been determined by the licensee to
verify the adequacy of the lift capability of the cranes planned for use in moving the spent
fuel. A loaded cask being removed from the spent fuel pool represented the maximum
weight to be lifted and exceeded the lifting capacity of the current Unit 1 crane. The
licensee had purchased new single failure proof cranes for installation and use during the
cask loading operations. The Unit 3 crane was rated at 125 tons. The Unit 1 crane would
be up-rated from 100 tons to 105 tons to account for the estimated 104.1 ton weight of the
loaded cask.
!
A safe loads path had been identified and analyzed for moving the spent fuel from the
spent fuel pool to the ISFSI. Provisions were established in procedures and through the
use of limit switches to prevent the crane from moving the loaded cask outside the
boundaries of the safe load path while in the fuel building. Calculations were performed
for the roadway between the plant and the ISFSI to verify that the path was structurally
capable of handling the weight of the loaded transfer cask and trailer.
!
The licensees heavy loads procedural requirements related to the transfer cask trunnions
and the slings used for lifting the canister lid were verified against industry standards and
manufacturer requirements for load tests, safety margins and inspection/maintenance.
!
The adequacy of the transport trailer for the expected weight of a loaded canister and the
ability of the transport trailer to safely secure and move the cask to the ISFSI was verified.
Pad/Storage Modules
!
Requirements in the Final Safety Analysis Report related to the placement of the storage
modules on the ISFSI pad and the module-to-module connections required for the high
seismic conditions at the SONGS site were being implemented.
!
The concrete storage module thermal monitoring program had been incorporated into
procedures. This included the daily monitoring of the storage module temperature and the
daily verification that the air inlets and outlets were free from debris.
!
The thickness requirements for the concrete storage module roof and shield walls to
ensure radiological levels would be below regulatory limits were verified by direct
observation of the storage modules under construction and a review of the design
drawings.
!
The seismic design of the ISFSI pad to meet the potential earthquake intensity at the
SONGS site and to address liquefaction of the soil under the pad was inspected by the
-7-
NRC on April 9, 2002, and documented in Inspection Report 50-206/02-07;72-41/02-01
issued May 21, 2002 (NRC Adams Document ML021410532).
Pre-Operational Testing
!
The licensee successfully completed all the required pre-operational test requirements
specified by the Certificate of Compliance. This include the loading, welding, drying, and
backfilling of a canister and the unloading of a sealed canister. A weighted canister was
used to demonstrate heavy load activities, transport between the Unit 3 facility and the
ISFSI and insertion/removal of a canister into the concrete storage module.
Procedures and Technical Specification Requirements
!
The licensee had developed the required operating procedures and programs required by
the Certificate of Compliance.
!
The adequacy of the level of detail in the procedures was verified by reviewing
requirements in the Final Safety Analysis Report related to handling the cask at the spent
fuel pool. All requirements reviewed had been incorporated as operational steps in the
licensees procedures.
Quality Assurance
!
The licensee had implemented their approved reactor facility Part 50 quality assurance
program for the activities associated with the ISFSI. Effective implementation of the
program was observed for all phases of ISFSI activities including procurement, control of
measuring equipment, corrective actions, design control, receipt inspections, storage and
audits.
!
Southern California Edison was constructing their canisters onsite as a fabricator to
Transnuclear, Inc. An inspection conducted by the NRCs Spent Fuel Project Office on
March 3-6, 2003, and documented in Inspection Report 72-1029/2003201 issued March 6,
2003, found all work activities were being properly controlled under the Southern
California Edison quality assurance program (NRC Adams Document ML030940163).
!
The licensees quality assurance organization had implemented a comprehensive quality
assurance audit and inspection program that was responsive to applying additional
oversight to selected work activities where problems were being identified. This was most
evident in the decision to place onsite quality assurance inspectors at one of the vendors
to ensure the quality of the concrete storage modules.
Radiation Protection
!
Requirements for radiological and contamination surveys described in the Final Safety
Analysis Report had been incorporated into the licensees health physics program for the
-8-
loading of the casks. This included special precautions related to potential high dose rate
work activities.
!
Calculations performed by the licensee to evaluate the potential radiological doses during
normal operations at the ISFSI and during an accident demonstrated compliance with the
limits specified in 10 CFR 72.104 and 10 CFR 72.106.
!
The licensee had identified the reactor Part 50 exclusion area as the controlled area for
the ISFSI. The distance from the ISFSI to the exclusion area boundary met the required
minimum distance for a controlled area around an ISFSI specified in 10 CFR 72.106.
Southern California Edison was authorized, through a signed easement, to remove
personnel from the exclusion area in the event of an emergency.
!
The licensee had determined a dose conversion factor for neutron doses to workers to
account for the neutron spectrum expected with the loaded canisters.
!
Environmental monitoring for the ISFSI had been incorporated into the existing reactor
environmental monitoring program. Additional thermoluminescent dosimeters had been
placed around the ISFSI to monitor the increase in radiation levels expected due to the
storage of the spent fuel. Dosimeters had been placed in service in 2001 and had been
used to collect background data that could be compared with the ongoing monitoring after
spent fuel was placed in the ISFSI to determine the level of increase in radiation levels.
Records
!
A records system had been established by the licensee under their reactor Part 50 quality
assurance program. Records required for retention by 10 CFR 72.174, 10 CFR 72.212,
10 CFR 72.234 and the Final Safety Analysis Report had been identified in the licensees
program as required records for retention.
!
An optical disk system was being used for permanent storage of the records. The quality
assurance plan required that ISFSI related records be retained for the duration of the
license or certificate of compliance.
!
The required 90-day notification prior to loading the first cask had been made to the NRC
on May 5, 2003. The requirement to provide notice to the NRC within 30 days of use of a
cask had been incorporated into the appropriate procedure.
Safety Reviews
!
Changes to the site related to the construction and operation of the ISFSI were being
evaluated in accordance with 10 CFR 72.48 and 10 CFR 50.59 requirements. No issues
were identified during the review of selected safety screenings.
-9-
Security
!
Security for the ISFSI had been integrated into the overall site security program. The
security plan and procedures had been revised to incorporate specific provisions for
responding to a security threat at the ISFSI. Arrangements had been established to obtain
support from local law enforcement agencies during a security event.
!
Security force personnel were trained on security requirements for the ISFSI including the
implementation of access controls, key controls and compensatory actions.
!
Physical security systems had been installed and were operational. This included the
protected area fence, lighting systems, intrusion detection systems and backup power.
!
Arrangements had been made for a moving protected area around the cask during
transport from Unit 3 to the ISFSI.
Training
!
The licensee had implemented a training program for workers assigned to the ISFSI that
incorporated the topics listed in the technical specifications and provided for
documentation of completion of training and job task qualification.
!
Specific training needs had been identified and incorporated into training for operations,
maintenance and health physics personnel as required by the Final Safety Analysis
Report.
!
A computerized training records system had been established by the licensee to track
completion of training by individuals.
Welding/Nondestructive Testing
!
Requirements for hydrogen monitoring during welding of the inner cask lid had been
incorporated into the procedures. The alarm set point had been established at 50 percent
of a lower explosive limit for hydrogen. During welding of the inner lid welds, hydrogen
levels were measured from 3 percent to 8.4 percent of the lower explosive limit.
!
The licensee was performing the required dye penetrant examinations of welds on the
canister in accordance with the Final Safety Analysis Report. Dye penetrant examination
procedures had been developed for both normal temperatures and for the higher
temperatures that could be encountered with the hotter casks.
!
Nondestructive examination requirements for welds were adequately specified in
procedures and on drawings.
!
Nondestructive examination personnel were qualified to the requirements in SNT-TC-1A
for performing weld examinations of the type required on the canisters.
-10-
Exit Meetings
The inspectors presented the inspection results to members of licensee management at the
conclusion of the various key stages of the inspection on August 8, August 19 and October 1,
2003. The licensee acknowledged the findings presented. The licensee did not identify as
proprietary any information provided to, or reviewed by, the inspectors that had been incorporated
into the inspection effort.
ATTACHMENT 1
SUPPLEMENTAL INFORMATION
PARTIAL LIST OF PERSONS CONTACTED
Licensee
J. Agosti, Lead Auditor, Procurement Quality
A. Alexander, Security Lock and Key Specialist
J. Appel, Engineer, Design Engineering
R. Ashe-Everest, Project Manager, Spent Fuel Cask Transfer Operations
V. Barone, Cognizant Engineer, Dry Cask Storage
R. Beatty, Supervisor, Unit 1 Security
M. Bise, Program Analyst
J. Bock, Project Manager, Project Management and Engineering Support
R. Bordon, Surveillance Team Supervisor, Nuclear Oversight and Assessment
G. Broussard, Manager, Security Operations and Equipment Performance
R. Brown, ISFSI Support
R. Busnardo, Project Manager for Canister Fabrication, Nuclear Generation Maintenance
G. Cook, Supervisor, Regulatory Compliance
T. Cook, Shift Commander, Security
P. Coughlin, QA/QC Vendor Oversight, Nuclear Oversight and Assessment
J. Custer, Manager, ISFSI Operations
D. Czapski, Quality Control Inspector, Nuclear Oversight and Assessment
S. Davis, Nuclear Security Officer, Security
D. Faasamala, Security Lock and Key Specialist
G. Ferrigno, Health Physics Planner
B. Gossett, Engineer, Nuclear Fuel Services
R. Granaas, Engineer, Nuclear Fuel Services
K. Gribble, Maintenance Supervisor
P. Gyswyt, Design Engineering
N. Hansen, Radiological Environmental Monitoring Program Specialist
S. Hunn, Administrative Manager
N. Jervis, Supervisor, Security Operations
W. Kotteakos, Supervisor, Quality Control/Nondestructive Examinations
J. Larson, Supervisor, Procurement Quality
J. Linville, Acting Shift Commander, Security
M. Mason, Supervisor, Fabrication
M. McBrearty, Engineer, Nuclear Regulatory Affairs
A. Meichler, Supervisor, Weld Engineering
D. Miller, Fuel Team Leader, Training
G. Moore, Manager, Decommissioning Oversight
J. Morales, Manager, Dry Cask Storage
M. Mullen, Nuclear Security Officer, Security
S. Ordorica, Nondestructive Examination Inspector
A. Ockert, Fire Protection Engineer
M. Orewyler, Maintenance Supervisor
R. Osborne, Manager, 72.48 Program
D. Pilmer, Manager, Dry Cask Fuel Storage Licensing
-2-
D. Ripley, Manager, Maintenance Training
M. Russell, Technical Specialist
S. Salwach, Nuclear Engineer, Maintenance Engineering
D. Schell, Supervisor, Fabrication Welding
J. Scott, Emergency Planning Engineer
M. Speer, Maintenance Supervisor
D. Stoeckel, Technical Specialist, Maintenance Engineering
T. Swindle, Shift Commander, Security
R. Todd, Supervisor, Security Equipment Performance
J. Valsvig, Welding Technician
M. Watson, Shift Commander, Security
S. Wong, Nondestructive Examination Inspector
H. Wood, Surveillance Team Member, Nuclear Oversight and Assessment
T. Yee, Consulting Engineer, Design Engineering
G. Zwissler, Manager, Administration
Leak Test Specialists
D. Hecksel, Leak Testing Specialist
Transnuclear, Inc.
U. Farradj, Project Manager
INSPECTION PROCEDURES USED
60854
Pre-operational Testing of an ISFSI
60855
Operations of an ISFSI
60856
Review of 10 CFR 72.212(b) Evaluations
60857
Review of 10 CFR 72.48 Evaluations
81001
ISFSI Security
ITEMS OPENED AND CLOSED
Opened
None
Closed
None
Discussed
None
-3-
LIST OF ACRONYMS USED
as low as reasonably achievable
ANSI
American National Standards Institute, Inc
CFR
code of federal regulations
derived air concentration
dry shielded canister
final safety analysis report
GWd/MTU
gigawatt days/metric ton uranium
independent spent fuel storage installation
kW
kilowatt
mixed-oxide fuel
NRC
Nuclear Regulatory Commission
psi
pounds/in2
psig
pounds/in2 (gauge)
quality assurance
safety analysis report (same as final safety analysis report)
SNT-TC
Society of Nondestructive Testing-Technical Council
San Onofre Generating Station
std-cc/sec
standard cubic centimeters/second
Tech Specs
technical specifications