ML103070372
| ML103070372 | |
| Person / Time | |
|---|---|
| Site: | Prairie Island  |
| Issue date: | 11/03/2010 |
| From: | Ann Marie Stone NRC/RGN-III/DRS/EB2 |
| To: | Schimmel M Northern States Power Co |
| References | |
| IR-11-002 | |
| Download: ML103070372 (5) | |
See also: IR 05000282/2011002
Text
UNITED STATES
NUCLEAR REGULATORY COMMISSION
REGION III
2443 WARRENVILLE ROAD, SUITE 210
LISLE, IL 60532-4352
November 3, 2010
Mr. Mark A. Schimmel
Site Vice President
Prairie Island Nuclear Generating Plant
Northern States Power Company, Minnesota
1717 Wakonade Drive East
Welch, MN 55089
SUBJECT: PRAIRIE ISLAND NUCLEAR GENERATING PLANT - REQUEST FOR
INFORMATION FOR MANAGEMENT OF GAS ACCUMULATION IN
EMERGENCY CORE COOLING, DEACY HEAT REMOVAL, AND
CONTAINMENT SPRAY SYSTEMS INSPECTION; 05000282/2011-002;
Dear Mr. Schimmel:
On January 24, 2011, the NRC will begin the on-site portion of the Gas Accumulation
Management in Emergency Core Cooling, Decay Heat Removal, and Containment Spray
Systems Temporary Instruction at your Prairie Island Nuclear Generating Plant. This inspection
will be performed in accordance with NRC Temporary Instruction (TI) 2515/177.
In order to minimize the impact that the inspection have on the site and to ensure a productive
inspection, we have enclosed a request for documents needed for the inspection. The
documents have been divided into three groups for each stage of the inspection.
The first group lists information necessary for our initial inspection scoping activities.
This information should be available to the inspector no later than November 29, 2010.
By December 10, 2010, the inspector will communicate the initial selected samples.
The second group of documents lists items needed to support our in-office preparation
activities. This set of documents should be available at the Regional Office no later than
January 10, 2011. This information should be separated by information request number,
especially if provided electronically (e.g., folder with the information request number).
During the in-office preparation activities, the inspectors may identify additional
information needed to support the inspection.
The last group includes the additional information mentioned above as well as plant
specific reference material. This information should be available to the inspectors on
January 24, 2011. It is also requested that corrective action documents and/or
questions developed during the inspections be provided to the inspectors as the
documents are generated.
M. Schimmel
-2-
It is important that these documents be as complete as possible, in order to minimize the
number of documents requested during the preparation week or during the on-site inspection.
If no activities were accomplished associated with a specific request, then provide a statement
indicating that the request is not applicable.
The lead inspector for this inspection is Caroline Tilton. If there are questions about the material
requested, or the inspection, please call Ms. Tilton at (630) 829-9718. Please send the
information to the following e-mail address caroline.tilton@nrc.gov. A hard-copy with the
required information is also an acceptable option.
This letter does not contain new or previous changes information collection requirements
subject to the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information
collection requirements were approved by the Office of Management and Budget, control
number 3150-0011. The NRC may not conduct or sponsor, and a person is not required to
respond to, a request for information or an information collection requirement unless the
requesting document displays a currently valid Office of Management and Budget control
number.
In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter and its
enclosure will be available electronically for public inspection in the NRC Public Document
Room or from the Publicly Available Records (PARS) component of NRC's document system
(ADAMS), accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the
Public Electronic Reading Room).
Sincerely,
/RA/
Ann Marie Stone, Chief
Engineering Branch 2
Division of Reactor Safety
Docket Nos. 50-282; 50-306
Enclosures:
TEMPORARY INSTRUCTION (TI 2515/177) DOCUMENT REQUEST
cc w/encl:
Distribution via Listserve
TEMPORARY INSPECTION (TI 2515/177) DOCUMENT REQUEST
1
Enclosure
Inspection Report: 05000282/2011-002; 05000306/2011-002(DRS)
Inspection Dates:
January 24-28, 2011, and February 7-11, 2011
Inspection Procedure:
TI 2515/177, Management of Gas Accumulation in Emergency
Core Cooling, Decay Heat Removal, and Containment Spray
Systems
Inspectors:
Caroline Tilton (lead inspector)
(630) 829-9718
caroline.tilton@nrc.gov
Néstor J. Féliz Adorno
(630) 829-9739
nestor.feliz-adorno@nrc.gov
I.
Information Requested By November 29, 2010
1.
Copy of the station response to Generic Letter (GL) 2008-01 and any supplemental
reports.
2.
Copies of all the requests for additional information (RAIs) and the associated
responses.
3.
List of corrective action program documents (with a short description) associated
with GL 2008-01, voids in piping, and pressure transients for the previous three
years.
4.
List of the suction piping sections identified as susceptible to gas accumulation (the
list should identify the corresponding system).
5.
List of the discharge piping sections identified as susceptible to gas accumulation
(the list should identify the corresponding system).
6.
List of changes (with a short description and tracking number) to the Final Safety
Evaluation Report (FSAR), Technical Specifications, Technical Specification
Bases, and Technical Requirement Manual associated with the resolution of
7.
List of calculations associated with GL 2008-01 (with a short description of the
calculation and the change), including calculations that have been changed or
created in response to GL 2008-01.
TEMPORARY INSPECTION (TI 2515/177) DOCUMENT REQUEST
2
Enclosure
II.
Information Requested By January 10, 2011
1. Copies of program documents and procedures developed to implement the
resolution of GL 2008-01.
2.
Copies of the selected corrective action program documents.
3.
Copies of the selected licensing and design basis document changes.
4.
Copies of isometric drawings of the subject systems (hard-copies are preferred).
5.
Copies of piping and instrumentation diagrams (P&IDs) of the subject systems
(hard-copies are preferred).
6.
List of commitments (with a description) made in response to GL 2008-01 including
the status of each.
7.
List of actions that were completed in response to GL 2008-01.
8.
Copies of all the corrective actions identified in the nine-month response and
supplemental reports.
9.
List (with a short description) of gas intrusion mechanisms that apply to the plant
and the affected system locations (e.g., identify the source, conditions, and
expected void locations).
10. Design basis documents of the subject systems (i.e., emergency core cooling,
decay heat removal, and containment spray systems).
11. Design basis documents of keep-full systems of the subject systems.
12. Copies of self-assessments associated with the implementation of the GL 2008-01
program.
13. If available, electronic copies of the current Technical Specifications, Technical
Specifications Basis, Final Safety Analysis Report, and Technical Report Manual.
III.
Information Requested to be Available on First Day of Inspection, January 24,
2011
1.
Copies of surveillance procedures associated with the resolution of GL 2008-01
and the results of the last two surveillances for the subject systems.
2.
Copies of the modification packages for hardware modifications as part of the
resolution of GL 2008-01.
3.
Copies of the selected calculations.
TEMPORARY INSPECTION (TI 2515/177) DOCUMENT REQUEST
3
Enclosure
4.
Copies of procedures use for detecting and determining void volumes.
5.
Copies of procedures use for filling and venting.
6.
Subject systems walkdown work documents associated with the resolution of
GL 2008-01 and the results of these walkdowns.
7.
Copies of the engineering evaluations performed for all identified voids.
8.
Copies of trends of periodic venting results.
9.
Copy of the design change review checklist that establish if a design change
introduces or increases the potential for gas accumulation beyond established
acceptance criteria.
10. Copies of training documents that ensure that personnel are aware of gas-related
concerns.
11. Copy of the void transport analysis.
12. Basis for the void acceptance criteria (e.g., calculation). If applicable, provide the
justification for any deviation from the void acceptance criteria established by the
Office of Nuclear Reactor Regulations (NRR).
13. Basis for horizontal pipe acceptance criteria (e.g., calculation).
14. Copy of vortexing calculations associated with systems under the scope of
15. If applicable, provide a list of inaccessible locations where plant walkdowns of the
subject systems have not been completed. Include an explanation of why each
area is considered inaccessible.
If you have questions regarding the information requested, please contact the lead inspector.
M. Schimmel
-2-
It is important that these documents be as complete as possible, in order to minimize the number of
documents requested during the preparation week or during the on-site inspection.
If no activities were accomplished associated with a specific request, then provide a statement indicating
that the request is not applicable.
The lead inspector for this inspection is Caroline Tilton. If there are questions about the material
requested, or the inspection, please call Ms. Tilton at (630) 829-9718.
This letter does not contain new or previous changes information collection requirements subject to the
Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information collection requirements
were approved by the Office of Management and Budget, control number 3150-0011. The NRC may not
conduct or sponsor, and a person is not required to respond to, a request for information or an
information collection requirement unless the requesting document displays a currently valid Office of
Management and Budget control number.
In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter and its enclosure
will be available electronically for public inspection in the NRC Public Document Room or from the
Publicly Available Records (PARS) component of NRC's document system (ADAMS), accessible from the
NRC Web site at http://www.nrc.gov/reading-rm/adams.html (the Public Electronic Reading Room).
Sincerely,
/RA/
Ann Marie Stone, Chief
Engineering Branch 2
Division of Reactor Safety
Docket Nos. 50-282; 50-306
Enclosures:
TEMPORARY INSTRUCTION (TI 2515/177) DOCUMENT REQUEST
cc w/encl:
Distribution via Listserve
DISTRIBUTION:
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9 Publicly Available
9 Non-Publicly Available 9 Sensitive 9 Non-Sensitive
To receive a copy of this document, indicate in the concurrence box C = Copy without attach/encl; E = Copy with attach/encl N = No copy
OFFICE
RIII
RIII
NAME
AMStone for NFAdorno:ls
AMStone for CTilton
AMStone
DATE
11/03/10
11/03/10
11/03/10
OFFICIAL RECORD COPY
Letter to Mr. Mark A. Schimmel from Ms. Ann Marie Stone dated November 3, 2010.
SUBJECT:
PRAIRIE ISLAND NUCLEAR GENERATING PLANT - REQUEST FOR
INFORMATION FOR MANAGEMENT OF GAS ACCUMULATION IN EMERGENCY CORE
COOLING, DEACY HEAT REMOVAL, AND CONTAINMENT SPRAY SYSTEMS INSPECTION;
05000282/2011-002; 05000306/2011-002(DRS)
DISTRIBUTION:
RidsNrrPMPrairieIsland
RidsNrrDorlLpl3-1 Resource
RidsNrrDirsIrib Resource
DRPIII
DRSIII
Patricia Buckley
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