L-2004-228, Supplemental Information Regarding Spent Fuel Pool Cask Area Rack Amendment Application
| ML042940518 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  |
| Issue date: | 10/08/2004 |
| From: | Jones T Florida Power & Light Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| L-2004-228 | |
| Download: ML042940518 (3) | |
Text
FPL 10 CFR 50.90 L-2004-228 JOT.
a WAb U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington D. C. 20555 Re:
Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251 Supplemental Information Regarding Spent Fuel Pool Cask Area Rack Amendment Application By letter L-2002-214 dated November 26, 2002, Florida Power and Light (FPL) submitted a license amendment application to revise the Turkey Point (PTN) Unit 3 and 4 Technical Specifications (TS) to allow the addition of a new spent fuel storage rack to the cask area of each unit's spent fuel pool.
By letter dated July 18, 2003, Nuclear Regulatory Commission (NRC) staff requested additional information (RAI) to support the review of the application. The RAI response was submitted by FPL letter L-2003-213 dated September 8, 2003. By letter dated October 23, 2003, the NRC staff requested further clarification of the RAI response in several areas. FPL letter L-2003-239 dated October 30, 2003 was submitted to clarify the response to RAI Questions 10a and 23.
The October 23, 2003 NRC letter also requested additional information related to the cask drop accident analysis. By letter L-2004-133 dated June 21, 2004, FPL responded to the NRC request for additional information related to the cask drop analysis.
In a conference call on September 16, 2004, the NRC staff raised several questions regarding the intermediate hoist that will be used during cask area rack installation/removal at Turkey Point Units 3 and
- 4. Attached is supplemental information to aid the staff in their review of the proposed license amendment. The No Significant Hazards Determination contained in the license amendment application (FPL letter L-2002-214) remains valid with the information provided within.
In accordance with 10 CFR 50.91(b)(1), a copy of this letter is being forwarded to the Designee for the State of Florida.
Should there be any questions on this letter, please contact Mr. Walter Parker at (305) 246-6632.
I declare under penalty of perjury that the foregoing is true and correct.
Executed on Very truly yours, Terry O.
ne Vice President - Turkey Point Nuclear Plant Attachment cc:
Regional Administrator, USNRC Region II Senior Resident Inspector, USNRC, Turkey Point USNRC Project Manager, Turkey Point W. A. Passetti, Florida Department of Health
-A DC)(
an FPL Group company
Attachment to FPL Letter L-2004-228 Supplemental Information on the Need for and Use of an Intermediate Hoist during Cask Area Rack Installation at Turkey Point Units 3 and 4 Docket Nos. 50-250 and 50-251
Background
In a conference call on September 16, 2004, the NRC staff raised several questions regarding the intermediate hoist to be used during cask area rack installation/removal at Turkey Point Units 3 and 4. NRC staff requested an explanation for the need of an intermediate hoist between the main crane hook and the lifted load. Additionally, the NRC staff requested further explanation of the inspections, maintenance, and hoist usage that would ensure hoist reliability.
The Turkey Point cask-handling crane is not single-failure-proof in accordance with NUREG-0612 and NUREG-0554. This crane is located outdoors and services both Unit 3 and 4 spent fuel pools through L-shaped openings which are accessible once the respective L-shaped doors are opened. The safe load path for the rack initiates from the outdoor ground level immediately adjacent to the respective cask wash area and the L-shaped opening. The path then involves a lift to the full up position and travel westward into the respective fuel handling building. The length of the load and lifting apparatus must be short enough to clear the curb at the edge of the spent fuel pool after entering through the L-shaped opening. Once the entire load clears the curb, and is over the cask pit area of the spent fuel pool, it may be lowered to the floor of the cask pit area, which is at the same elevation as the balance of the spent fuel pool.
Supplemental Information The cask handling crane does not provide sufficient overhead clearance for a fixed-length load to clear the curb at the edge of the spent fuel pool and still reach the bottom of the cask pit floor without submerging the main crane hook by approximately 2 feet. An intermediate hoist placed between the main hook and the load will extend the length of the lifting equipment; keeping the main hook and the intermediate hoist out of the water. Any contamination that is not removable on the intermediate hoist, its chain, or hook will be accommodated by proper storage or disposal.
FPL prefers to avoid wetting the main hook to eliminate the need to decontaminate and free-release the hook for return to its outdoor location.
A new intermediate hoist was procured for the sole purpose of installing and removing the cask area racks in the spent fuel storage pools of Turkey Point Units 3 and 4. This hoist has been tested and certified by the vendor to 125% of rated load. Upon receipt of the license amendment, FPL plans to install new spent fuel pool storage racks in the cask area of each unit's spent fuel storage pool. At the present time, FPL has no plans to remove the racks until dry fuel storage operations begin. Consequently, use of the intermediate hoist will be infrequent and limited only to rack installation and removal when needed to support the plant schedule.
While FPL has no specific limits on the number of lifts made by the intermediate hoist, the integrity of the hoist will be ensured through periodic inspection and maintenance routines
FPL Letter L-2004-228 Attachment Page 2 of 2 established in plant procedures. Use of the intermediate hoist will be controlled under the rigging and heavy loads program at Turkey Point as described in plant procedures. The Turkey Point rigging controls program incorporates the applicable requirements of ANSI/ASME B30.1 through B30.22.
Prior to its use, the intermediate hoist will be subjected to the inspection and testing requirements of plant procedures. The inspection and testing will be performed by a qualified person/designated individual. Some of the routine inspection requirements (for those hoists idle for a month or more but less than a year) include: visual inspection for worn, cracked or distorted parts; loose nuts, bolts and rivets; excessive wear of wheels; chemical damage, deformation and cracks in the hook; a check of the load chain for wear, stretch, broken/cracked links and proper lubrication and reeving; a functional check to determine any maladjustment, unusual noise, operation of the limiting device and hook latch. In addition to the inspection requirements identified above, those hoists that are new, altered, modified or idle for a period of one year will undergo a functional test including lifting and lowering.
In addition to periodic inspections, the rigging controls program requires operational and functional tests when the hoist has been idle for a long period of time and when any hoist has been altered, repaired and/or decontaminated (without affecting the load suspension parts).
Hoists that have had load suspension parts altered, repaired or replaced shall be load tested to not less than 100% of rated load nor more than 125% of rated load unless otherwise recommended by the hoist manufacturer or the qualified person/designated individual. The rigging controls program also requires that load greater than 10,000 lbs. to be initially lifted approximately one foot and held for a period of time to check the operation of the brake system.
Maintenance activities performed on the intermediate hoist will be conducted in accordance with plant maintenance procedures and vendor instructions.