ML20028C490

Forwards IE Bulletin 78-03, Potential Explosive Gas Mixture Accumulations Associated W/Bwr Offgas Sys Operations. Action Required.W/O Encl

ML20028C490
Person / Time
Site:	05000000, Millstone
Issue date:	02/10/1978
From:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To:	Switzer D NORTHEAST NUCLEAR ENERGY CO.
Shared Package
ML20027A594	List: 05000000/LER-1977-040, Forwards LER 77-040/01T 05000000/LER-1977-040-01, /01T:on 771213,two Hydrogen Detonations Occurred in Offgas Sys & Stack Base,Resulting in Momentary Radioactive Release & Injury to One Employee.Initial Detonation Caused by Arc Strike on Instrument Tubing 05000000/LER-1977-043, Forwards LER 77-043/03L-0.Detailed Event Analysis Encl 05000000/LER-1977-043-03, /03L-0:on 771219,stack Gas Monitor Sample Probes & Mounting Beam Discovered Damaged.Caused by 771213 Stack Base Hydrogen Detonation.Monitor Probes & Support Beam Replaced & Sys Operation Restored on 771223 IR 05000245/1977033 ML20027A593 ML20027A595 ML20027A612 ML20028C393 ML20028C398 ML20028C399 ML20028C403 ML20028C405 ML20028C407 ML20028C408 ML20028C410 ML20028C411 ML20028C412 ML20028C413 ML20028C414 ML20028C415 ML20028C419 ML20028C420 ML20028C422 ML20028C423 ML20028C424 ML20028C425 ML20028C426 ML20028C427 ML20028C428 ML20028C430 ML20028C431 ML20028C432 ML20028C433 ML20028C434 ML20028C435 ML20028C436 ML20028C437 ML20028C440 ML20028C441 ML20028C442 ML20028C443 ML20028C446 ML20028C448 ML20028C449 ML20028C450 ML20028C451 ML20028C452 ML20028C453 ML20028C454 ... further results
References
FOIA-82-545 NUDOCS 8301100267
Download: ML20028C490 (1)

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wino or PausstA. PENNsVLVANI A 19404 February 10, 1978 Occket No. 50-245 Northeast Nuclear Energy Company ATTN: Mr. O. C. Switzer President P. O. Box 270 Hartford, Connecticut 06101 Gentlemen:

Enclosed is IE Bulletin No. 78-03 which requires action by you with regard to your pcwer reactor facility (ie6 with an operating license.

Should you have any questions regarding this Bulletin er the actions required of you, please contact this office.

Sincerely, 4! %

j Boyce H. Grier p 4 0irector

Enclosures:

1.

IE Bulletin No. 78-03 2.

List of IE Bulletins Issued in 1978 cc w/encis:

E. J. Ferland, Plant Superintendent O. G. Diedrick, Manager of Quality Assurance A. Z. Roisman, Counsel for Citizens Comittee for the Protection of the Environment N

8301100267 821207 PDR FDIA HIATT82-545 PDR A