ML20210K609
| ML20210K609 | |
| Person / Time | |
|---|---|
| Site: | Byron  |
| Issue date: | 09/23/1986 |
| From: | Ainger K COMMONWEALTH EDISON CO. |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| 2145K, NUDOCS 8610010463 | |
| Download: ML20210K609 (3) | |
Text
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I One First National Plaza, Chicago (V/ Address Reply to: Post Omce Box 767 Chicago, Illinois 60690 0767 September 23, 1986 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Washington, DC 20555 subject: Byron Station Unit 2 Fire Protection NRC Docket No. 50-455 Reference (a): July 30, 1986 letter from K. A. Ainger to H. R. Denton
Dear Mr. Denton:
Reference (a) provided a listing of the majority of the permanent
)
NFPA code deviations identified by our fire protection engineering consultant for Byron Unit 2.
Most of these deviations are the same as those which were identified for Byron Unit 1.
Byron Unit 1 NFPA code deviations are listed in Table.3-1 of the Byron /Braidwood Fire Protection Report.
Attached to this letter is a listing of NFPA code deviations for Byron Unit 2 which were not it:entified on the Byron Unit I list.
One signed original and' fifteen copies of this letter and attachment are provided for NRC review.
Please direct any questions regarding this matter to this office.
Very truly yours, K. A. Ainger Nuclear Licensing Administrator 1m Attachment cc: Byron Resident Inspector 2145K 8,610010463 0,60923 y
a.
o'e Fire Zens NFPA Reference Recom endation Resolution All water spray 15 - 1985 A suitable flushing connection should System main drain tests are systems.
2-13 be incorporated into the water spray performed which will flush systems to facilitate routine piping up to system piping, flushing.
The system can be pnuematically cleaned if determined neces-sary. No further action required.
Allautomati8 15 - 1985 A gage connection should be provided Hydraulic analysis verified the water spray 4-9.25 at or near the nozzle calculated as adequacy of the water supply to systems having the least pressure under meet the greatest hydraulic normal flow conditions, demand. A review 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.
18.11-2 30 - 1981 Tanks shall be equipped with an Byron station personnel will (River screen 2-4.4.48 oveflow device or means to prevent monitor filling of these tanks.
housa diesel (2) overflow into the building. In this Byron station procedures have storage tanks) regard, a liquid overflow pipe at been developed to adequately least one pipe size larger than the address spills. This procedure fill s1.all be provided and connected is considered acceptable. No to an approved location.
further action recommended.
1
e-e we Fire Zone NFPA Reference Recemmendation Resolution 3.3A-2 12A - 1985 Only listed or approved Equipe=nr. and The Halon check valves are not 3.33-2 2-7.4 devices shall be used in the system.
spreifically listed independ-3.3C-2 Halon check valves Model No.
ently, however provided as a 3.3D-2 1-061-733, Serial No. M-2964.
component of this halen system design which was reviewed and found to have been designed, installed and tested in accordance with the recom-mendation of NFPA. The preoper-ational 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 - 1c85 The solenoid switch manufactured by The testing procedures confirms spray systems.
2-1.2
. Automatic Switch Company and component operability. This is installed on the automatic water considered acceptable, spray systems should be U.L. listed.
11.7-0, 11.7-1, 15 - 1985 Individual strainers should be Strainers are provided upstream 11.7-2, 18.4-2, 4-11.3 provided at each nozzle where water of the fire pumps. Also, 3.3A-2, 3.3A-1 passage ways are smaller than 1/8 flushing procedures will
- inch, eliminate any debris.
18.11-2 15 - 1985 Tanks shall be equipped with an Byron station procedures have (River screen 2-4.4.8 overflow device or means to prevent been developed to adequately housa diesel (2) overflow into building. In this address spills in all plant storagt tanks) regard, a liquid overflow pipe at areas. No further action is least one pipe size larger than the required. This is considered fill pipe shall be provided and adequate.
connected at an approved location.
.