ML19312D536
| ML19312D536 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 02/14/1980 |
| From: | Ippolito T Office of Nuclear Reactor Regulation |
| To: | Jackie Jones CAROLINA POWER & LIGHT CO. |
| References | |
| NUDOCS 8003240573 | |
| Download: ML19312D536 (5) | |
Text
TERA a.
[p=.g)g UNITED STATES e(
NUCLEAR REGULATORY COMMISSION t, g jl WASHINGTON, D. C. 20555 g Og/
February 14, 1980 Docket Nos. 50-325 and 50-324 Mr. J. A. Jones Executive Vice President Carolina Power & Light Company 336 Fayetteville Street Raleigh, North Carolina - 27602
Dear Mr. Jones:
Your letters dated September 11 and October 16, 1979, proposed a revision to the design of the sprinkler system for the Diesel Generator Building basement level (El. 2 ft) and the Service Water Building basement level (El. 2 ft) at Brunswick Steam Electric Plant (BSEP).
CP&L had originally committed to install these systems in accordance with NFPA-13. To provide improved protec-tion against an exposure fire, we understand that CP&L will provide:
(1) sprinkler heads at the ceiling level in accordance with NFPA-13 except where interferences exist such as cable trays or structural members; (2) sprinkler heads at lower elevations with heat collectors where interferences exist; and (3) sprinkler heads below cable trays to protect from an exposure fire.
We find that this change will improve fire protection for these areas and does not affect the bases for our conclusions in the fire protection SER of Ncvember 22, 1977 and supplment of April 6,1979. Accordingly, the proposed change is acceptable.
As a result of IE inspections of the Fire Protection Equipment at BSEP, we have identified certain areas that will require corrective action.
i The first item concerns a discrepancy in the BSEP Technical Specifications (7S) regarding penetration fire barriers.
Current TS 3/4 7.8 establishes requirements for checking the operability of fire detection instruments on each side of a penetration fire barrier if the fire barrier is broken or out 1
of service. This TS also pemits stationing a fire watch as an alternate method.
Provided the instruments check satisfactorily, there is no limit to the time that a fire barrier may be out of service with complete reliance on the fire aetection system; i.e., no fire watch.
.ie require that you upgrade the Fire Barrier Penetration, TS to conform to the SE STS, wnich is included as an attachment to this letter.
Please submit your revised Technical Specification (including Bases) within 60 days of your receipt of this letter.
8003 240573
. C.
Mr.'J. A.' Jones.
The second itu concerns the need for providing supervision features in the circuit for the valves that are normally closed but would have to be remotely
-operatad from the control room to supply water to the reactor building standpipe system. The use of an unsupervised circuit would allow circuit faults to go undetected and result in loss or delays in providing water for fire suppression i
in the reactor-building. We require that you upgrade this circuit to include electrical supervision. You are requested to provide a schedule for implemen-tation of this modification within 60 days of your receipt of this letter.
We appreciate your cooperation with us.
Sincerely, 1
MhomasA7Ippolito, Chief Operating Reactors Branch #3 Division of Operating Reactors
Enclosure:
cc w/ enclosure:
see next page l.
.'L1 Mr. J. A. ' Jones Carolina Power & Light Company cc:
Richard E. Jones, Esquire Carolina Power & Light Company 336.Fayetteville Street Raleigh North Carolina 27602 George F. Trowbridge, Esquire Shaw, Pittman, Potts & Trowbridge 1800 M Street, N. W.
Washington, D. C.
20036 John J. Burney, Jr., Esquire Burney, Burney, Sperry & Barefoot 110 North Fifth Avenue Wilmington, North Carolina 28401 Resident Inspector U. S. Nuclear Regulatory Commission P. O. Box 1057 Southport, North Carolina 28461 Southoort - Brunswick County Library 109 W. Moore Street Southport, North Carolina 28461 Mr. Fred Tollison Plant Manager P. O. Box 458 Southport, North Carolina 28461 t
l
P'_ ANT SYSTEMS V-13/4.7.8 FIRE BARRIEP PENETRATIONS LIMITING CONDITION FOR OPERATION 3.7.8 All-fire barrier penetrations, including cable penetration barriers, fire soors and fire dampers, in fire zone boundaries protecting safety related areas snall be functional.
APPLICABILITY:
/.t all times.
ACTION:
a.
With one or more of the above. required fire carrier penetrations non-functional, within one hour establish a continuous fire watch on at least one side of the affected penetration or verify the OPERABILITY of fire detectors on at least one side of tne non-functional fire l
barrier and estaciisn an hourly fire watcr. patrol.
Restore the non-functional fire barrier penetrations (s) to functional status within l
7 days or, in lieu of any other report req,.:f rea b) Specification.
i 6.9.1, prepare and submit a Special Repcrt to tae Com:r,ission pursuant to Specification 6.9.2 within the next 30 cays outlining the action taken, the cause of the non-functional penetration and plans and r
schedule for restoring the fire barrier cenetration(s) to functionc)
- v status.
t.
Tne crovisions cf Specifications 3.0.3 anc 3.0.4 are not applicable.
s'R'.'EILLANCE REOUIREMENTS 4.7.S-Each of the above required penetration fire barriers shall be verified ca ::e functional:
i a.
At least once per 15 months by a visual inspection, arid b.
Prior to restoring a fire barrier penetraticr. tc f unctional status following repairs or maintenance, by perfor an:e ::f a visual inspec-
-tion ef'the affectcc fire barrier penetraticn.
i k
9k eu 9%S
.i-:~5 3l:
-29
PLANT SYSTEMS BASES 3/4.7.8 FIRE BARRIER PENETRATIONS l
The functional integrity of the fire barrier penetrations ensures that l
fires will be confined or adequately retarded from spreading to adjacent portions of the facility.
This design feature minimizes the possibility of a single fire rapidly involving several areas of the facility prior to detection and extinguishment.
The fire barrier penetrations are a passive element in l
the facility fire protection program and are subject to periodic inspections.
The barrier penetrations, including cable penetration barriers, fire doors and dampers are considered functional when the visually observed condi-tion i~s the same as the as-designed condition.,For those fire barrier-penetrations that are not in the as-designed condition, an evaluation shall be performed to show that the modification has not degraded the fire rating of the fire barrier penetration.
During periods of tins when the barriers are not functional, either,
- 1) a continuous fire watch is required to be maintained in the vicinity of the affected barrier, or 2) the fire detectors on at least one side of the affected barrier must be verified OPERABLE and a hourly fire watch patrol established until the barrier is restored to functional status.
3/4.7.9 AREA TEMPERATURE MONITORING The area temperature limitations ensure that Safety-related equipment will not be subjected to temperatures in excess of their environmental qualification temperatures.
Exposure to excessive temperatures may degrade equipment and can cause loss of its OPERABILITY.
The temperature limits include allowance for an instrument error of (
) F.
l O
GE-5TS B'3/4 7-4
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