ML18010B114
| ML18010B114 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 06/15/1993 |
| From: | Le N Office of Nuclear Reactor Regulation |
| To: | Vaughn G CAROLINA POWER & LIGHT CO. |
| References | |
| GL-92-08, GL-92-8, TAC-M85556, NUDOCS 9306180198 | |
| Download: ML18010B114 (6) | |
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Docket No. 50-400 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, O.C. 20555 0001 June 15, 1993 Hr.
G.
E.
Vaughn Vice President Carolina Power
& Light Company Shearon Harris Nuclear Power Plant Post Office Box 165, Hail Code:
Zone 1
New Hill, NC 27562-0165
Dear Hr. Vaughn:
SUBJECT:
SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1
RESPONSE
TO GENERIC LETTER 92-08, "THERHO-LAG 330-1 FIRE BARRIERS" (TAC NO. H85556)
By letter dated April 16,
- 1993, you provided a response to Generic Letter (GL) 92-08 for the Shearon Harris Nuclear Plant, Unit 1
(SHNPP).
Your response states that:
(1) the Thermo-Lag fire barriers are installed at
- SHNPP, but you have not performed any specific testing of this material and have relied upon the vendor's testing and installation program to satisfy your commitments; (2) you have performed an additional review of the cable ampacity using the derating percentages identified in Generic Letter 92-08, and have concluded that the design margin for the material is still available using the higher percentages identified in the Generic Letter; and (3) you conservatively judged that any Thermo-Lag 330-1 applications, whether preformed
- shapes, sprayed, brushed-on, or trowel grade
- material, were suspect based on the original NRC notification.
Although Thermo-Lag barriers have been evaluated and may be considered qualified by your vendor's testing, the results of recent tests and inspections indicate that further actions are now necessary to address fire endurance and ampacity derating of the Thermo-Lag barriers.
Your response states that appropriate action to resolve these concerns is being developed through an industry program coordinated by NUHARC.
You also state you will apply the results of the industry program to the Thermo-Lag 330-1 installations at SHNPP when they are completed.
Compensatory measures for inoperable barriers are now in place and will remain in place until the fire barriers can be declared operable.
In your response to GL 92-08, you indicated that the action necessary to confirm the operability of these barriers will be based on the results of the p/j NUHARC program.
The staff expects that licensees referencing the NUHARC program will review the results and, within 30 days after the completion of 9306i80198 930615 PDR ADOCK 05000400 F
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June 15, 1993 Hr.
G.
E.
Vaughn the program, inform the NRC of the action necessary and the schedule for restoring the operability of these fire barriers, including any plant specific or unique fire barrier configurations that are not bounded by the NUHARC program.
In accordance with the reporting requirements of GL 92-08, you are also to confirm in writing the completion of the corrective actions.
The information requested by this letter is within the scope of the overall burden estimate in Generic Letter 92-08 which was an average of 300 person-hours for each addressee's response.
This request is covered by Office of Management and Budget Clearance Number 3150-0011, which expires June 30, 1994.
Sincerely, ORIGINAL SIGNED BY:
Ngoc B. Le, Project Manager Project Directorate II-1 Division of Reactor Projects I/II Office of Nuclear Reactor Regulation cc:
See next page DISTRIBUTION:
CDocket F'il,e7 NRC/Local PDRs PD II-1 Reading File S.
Varga G. Lainas S.
Bajwa N.
Le P. Anderson A. Hasciantonio C. HcCracken C. Berlinger OGC ACRS (10)
ED Herschoff, R-II cc:
Plant Service list 13-B-18 8-D-1 7-E-4
- See previous concurrence OFFICE NAME DATE LA:PD21 PAnders n
93 PH: PD21: DRPE NLe:dt
<1% m PH: PD31*
AHasciantonio 5 20 93 BC:SPLB*
CHcCracken 06 08 93 OFFICE BC:EELB*.
CBerl,inger AD:PD21: DRPE SBajwa NAME 93 06/09/93 DATE Document Name:
HAR85556.LTR
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Mr. G.
E. Vaughn Carolina Power
& Light Company Shearon Harris Nuclear Power Plant, Unit 1
CC:
Mr. H. Ray Starling Manager Legal Department Carolina Power
& Light Company Post Office Box 1551
- Raleigh, North Carolina 27602 Resident Inspector/Harris NPS c/o U.S. Nuclear Regulatory Commission Route 1,
Box 315B New Hill, North Carolina 27562 Mr. H. A. Cole Special Deputy Attorney General State of North Carolina Post Office Box 629
- Raleigh, North Carolina 27602 Public Service Commission State of South Carolina Post Office Drawer 11649
- Columbia, South Carolina 29211 Regional Administrator, Region II U.S. Nuclear Regulatory Commission 101 Marietta St.,
N.W. Suite 2900 Atlanta, Georgia 30323 Mr.
W.
R. Robinson Plant Manager Carolina Power
& Light Company Shearon Harris Nuclear Power Plant Post Office Box 165, MC: Zone 1
New Hill, North Carolina 27562-0165 Mr. Dayne H. Brown, Director Division of Radiation Protection N.C. Department of Environmental Commerce
& Natural Resources Post Office Box 27687
- Raleigh, North Carolina 27611-7687 Mr. H.
W. Habermeyer, Jr.
Vice President Nuclear Services Department Carolina Power
& Light Company Post Office Box 1551
- Raleigh, North Carolina 27602
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