ML20212Q574
| ML20212Q574 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 01/21/1987 |
| From: | Ainger K COMMONWEALTH EDISON CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| 2631K, NUDOCS 8702020300 | |
| Download: ML20212Q574 (3) | |
Text
_
[
') Commonwealth Edloon
- One First National Plaza Chicago, Illinois
- \\
l Address Reply to: Post Office Box 767
\\
Chicago, Illinois 60690 - 0767 January 21, 1987 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC.
20555 Subj ect: Byron Station Unit 2 Fire Protection NRC Docket No. 50-455
Reference:
(a) September 23, 1986 letter from K. A. Ainger to H. R. Denton
Dear Mr. Denton:
Reference (a) provided a listing of NFPA Code deviations for Byron Unit 2 which were not identified on the Byron Unit I list. Attached is a revised listing of NFPA Code deviations for Byron Unit 2.
This list has been revised to deletc a deviation from NFPA 30 regarding an overflow line for the diesel oil storage tanks in the river screen house and to correct some typographical errors on the list.
A pre-set meter will'bo used in the fill line from the diesel oil i
supply source when filling the stcrage tanks in the river screen hoase. This j
is in accordance with NFPA 30 section 2-4.4.8.
Therefore, the deviation from NFPA 30 has been deleted. The pre -set meter will be procured as soon as practicable.
In the interie, if the tanke need to be refilled, an equipment attendant will he stationed at the tanks to monitor the filling operation.
Please direct any questions regarding this matter to this office.
Very truly yours,
[
K. A. Ainger Nuclear Licensing Administrator f
/kij Attachment ec:
Byron Resident Inspector Region III Office ggh 2631K fA"!888R88a8433
'h PDR
a<~
Fire Zone NFPA Reference Recc.w.endation Resolution All water spray 15 - 1985 A suitable flushing connection System main drain tests are systems 2-13 should'be incorporated into performed which will flush the water' spray systems to piping up to system piping.
5 facilitate routine flushing.
,.The system can be pnuematically
~
~
~ ~ ~ ~
cleaned if determined necessary.
, ~
E I
No further action required.
All automatic 15 - 1985 A gage connection should be Hydraulic analysis verified water spray 4-9.25 provided at or near the the adequacy of the water systems.
nozzle calculated as having supply to meet the greatest the least pressure ynder hydraulic demand. A review normal flow conditions.
of the individual water spray systems calculation against the design and water supply confirm the calculation with respect to the system design. A gage on this system is not considered necessary.
No further action required.
s H
e,
~ '
s MFP/cle/8846b
Fire Zone NFPA Reference Recommendation Res olut i on
.r 3.3A-2 12A - 1985 Only listed or approved equipment The Halon check valves are 3.38-2 2-7.4 and devices shall be used in the not specifically listed 3.3C-2 system. Halon check valves Model independently, however 3.3D-2 No. 1-061-733, Serial No. H-2964 provided as a component of this halon system design which was reviewed and found to have been designed, installed and tested in accordance with the recommendation of NFPA.
The preoperational test of these systems will verify operability of these valves.
These valves are considered to be adequate. No further action required.
All automatic water 15 - 1985 The solenoid switch manufactured The testing procedures confirms spray systems 2-1.2 by Automatic Switch Company and component operability. This installed on the automatic water is considered acceptable.
spray systems should be U.L. listed.
11.7,-0, 11.7-1 15 - 1985 Individual strainers should be Strainers are provided 11.7-2, 18.4-2 4-11.3 provided at each nozzle where upstream of the fire pumps.
3.3A-2, 3.3A-1 water passage ways are smaller Also, flushing procedures
.than 1/8 inch, will eliminate any debris.
- ?
- MFP/cle/8846b i
.