ML20028C474

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

ML20028C474
Person / Time
Site:	05000000, Monticello
Issue date:	02/10/1978
From:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:	Wachter L NORTHERN STATES POWER 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 8301100246
Download: ML20028C474 (1)

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(. N O' FEB 10. 8 Docket No. 50-263 Northern States Power Company ATTN Mr. Leo Wachter, Vice President Power Production and System Operation 414 Nicollet 11all Minneapolis, MN 34401 centlemens Enclosed is 10 Bulletin No. 78-03 which ra. quires action by you with regard to your power reactor facility with an operating license.

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

Sincerely, i

James C. Kappler Director

Enclosures:

1.

IE Bulletin No. 78-03 2.

List of IE nulletina Issued in 1978 cc v/encis Hr. L. R. E11ason, Plant Manager central Files Reproduction Unit NRC 20b FDR Local PDR NSIC TIC Anthony Roimetan. Esq.,

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