ML19256B695
| ML19256B695 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 07/25/1979 |
| From: | Lainas G Office of Nuclear Reactor Regulation |
| To: | Ziemann D Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7908270139 | |
| Download: ML19256B695 (3) | |
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JUL 2 5 1379 D. Ziemann, Chief, Operating Reactors Branch #2, MEMORANDUM FOR:
Division of Operating Reactors G. Lainas, Chief, Plant Systems Branch, Division FROM:
of Operating Reactors SAFETY EVALUATION REPORT, FIRE PROTECTION PROGRAM
SUBJECT:
Plant Name:
Dresden 1 Commonwealth Edison Co.
Licensee:
Docket No.:
50-10 Project Manager:
S. Nowicki Responsible Branch:
Plant Systems Branch Requested Completion Date:
Draft SER completed Status:
transmitting our evaluation of the fire 15, 1979, By memo dated Mayprotection program at the Dresden 1 plant, we indica 15, 1979. A telecopy consultant's report would be completed by JuneA copy of this report is of this repo t. was received on July 3,1979.
jt enclosed, along with a copy of Section 9, Consultant's Report of the sub SER which discusses consultant recommendations that have not been t adopted by the staff.
,d V G. Lainas, Chief Plant Systems Branch Division of Operating Reactors
Contact:
L. Derderian
Enclosures:
As stated cc w/ enclosure:
D. Eisenhut B. Grimes G. Lainas R. Ferguson D. Ziemann S. Nowie'i M. Antonet ti T. Wambach L. Derderian 7008270}3
9.0 CONSULTANTS REPORT Brookhaven National Laboratory under contract to the NRC has provided the services of fire protection consultants who participated in the evaluation of the fire protection program.
They have also participated in the preparation and review of this safety evaluation report.
Their report, Fire Protection in Operating Nuclear Power Stations - Dresden 1 SER Review dated July 3',1979, discusses items which have been addressed in this report.
The consultants recommendations which we have rot totally adopted are discussed below.
Our basis for not adopting these recommendations are given below.
Consuhants RecommenJations Not Adopted 1.1 Valve Supervision
" Electrical valve supervision should be provided on all valves controlling fire water systems and sectionalizing valves. The present proposal of administrative controls or locks is unacceptable.
Staff Response:
The NRC guidelines on valve supervision are given in Appendix "A" of Branch Technical Position (BTP) 9.5-1 of the alternative Standard Review Plan.
These guidelines permit, as an to electrical supervision, an administrative program to assure that valves are maintained in the proper position.
Such a program includes locking valves with strict key control or sealing valves with tamper proof seals.
Periodic inspections are to be performed to verify that the r ;thod of securing the valve is intact.
These measures are consistent with the requirements imposed for supervising valves in safety-related systems, and provide adequate assurance that valves are maintained in the appropriate position.
The licensee's program for valve supervision is consistent with NRC guidelines, see SER Section 4.3.1.c.
In addition, the plant Technical Specifications are being revised to require a monthly check of all valves in the flow path to fire suppression systems.
We find that a significant increase in plant safety would not result from the use of electrical supervision of all valves in the fire water systems.
1.2 Ventilation System The oresent portable system consists of two 5200 CFM fans with ducting, and additional portable units available fron the local fire department.
BNL recommends an additional 5200 CFM blower be on hand to be more consistent s portable ventilation.
DUPLICATE DOCUMENT Staff Response:
The licensee supervac units.
The local fir, Entire document previously minutes of the plant has addi entered into system under:
if necessary.
We find that th 7Q q
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