ML17054D006
| ML17054D006 | |
| Person / Time | |
|---|---|
| Site: | Browns Ferry, Crane  |
| Issue date: | 03/24/1975 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | |
| Shared Package | |
| ML17054D007 | List: |
| References | |
| IEB-75-04, IEB-75-4, NUDOCS 7904200044 | |
| Download: ML17054D006 (4) | |
Text
II Inspection and Enforcement Bulletin No. 75-04 March 24, 1975 CABLE FIRE AT BROWNS FERRY NUCLEAR POWER STATION DESCRIPTION OF CIRClPi5TANCES:
'I Preliminary information from Tennessee Valley Authority regarding a fire whi.ch occurred 'on March 22, 1975, at their Browns Ferry site near Athens, Alabama, indicates that the fire was started as a result of construction activities.
The fire resulted in the shutdown of two operating nuclear plants and.made several safety systems inoperative, including systems normally used for decay heat removal during shutdown.
The workmen were engaged in construction activities on a third unit not yet licensed for operation by NRC.
Initial information indicates that during the installation and testing of cable through-wall penetrations an open flame ignited a flammable material used in the penetration seals.
ACTION TO BE TAKEN BY LICENSEES:
The following actions are requested of selected Licensees with operating power reactor facilities and major construction activities at a common site:
Review your overall procedures and system for controlling construction activities that interface with reactor operating activities, with particular attention to the installation and testing of seals for electrical cables between compartments of the reactor building, e.g., control room to cable spreading room.
2.
Review the design of floor and wall penetration seals, with parti.cular attention to the flammability of materials.
3.
Evaluate your procedures for the control of ignition sources which may be used for leak testing or other purposes in areas containing flammable materials.
4 ~
Report to this office, in writing within 20 days of the date of this Bulletin, the results of your reviews or evaluations regarding items 1 through 3 above.
ACTIONS TO BE TAKEN BY LICENSEES MAY BE REVISED:
The actions requested of Licensees above may be revised as additional details of the Browns Ferry occurrence are available and evaluated by the NRC.
./yyp4u cOy4/
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UNITED STATES CLEAR REGULATORY COMMISSION REGION I 66I PARK AVENUE KING OF PRUSSIA, PENNSYLVANIA I9406 Niagara Mohawk Power Corporation Attention:
R.
R. Schneider Vice President, Electric Operations 300 Erie Boulevard Vest
- Syracuse, NY 13202 March 14, 1975 Docket No. 50-220 Gentlemen:
Enclosed is IE Bulletin No. 75-03 which requires action by you with regard to your power reactor facility(ies) with operating license or construction permit.
Should you have questions regarding this Bulletin or the action required of you, please contact this office.
Sincerely,
/PM James P. O'Reilly Director
Enclosure:
IE Bulletin No. 75-03 Approved by GAO, B-180225
{R0072), clearance expires 7-31-77.
Approval was given under a
blanket clearance specifically for identified generic problems.
cc:
T. E. Lempges, General Superintendent, Nuclear Generation T. J. Perkins, Plant Superintendent C. L. Stuart, Operations Supervisor E.
B. Thomas, Jr., Esquire A.
7..
- Roisman, Counsel for Citizens Committee for Protection of. the Environment bcc:~ Files DR Central F'les PDR Local PDR REG:l Reading Room State of New York
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