ML19322D526

Requests Response to NRC Concerns Re Procedure to Seal Penetration R-401 Containment End & Availability of Associated Hardware.W/O Capability to Seal R-401,problems W/Procedures for Core Cooling Will Increase

ML19322D526
Person / Time
Site:	Crane
Issue date:	01/23/1980
From:	Jay Collins NRC - TMI-2 OPERATIONS/SUPPORT TASK FORCE
To:	Arnold R METROPOLITAN EDISON CO.
References
CON-NRC-TMI-80-003, CON-NRC-TMI-80-3 NUDOCS 8002150024
Download: ML19322D526 (1)

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TMI r/f NRR r/f Jag g g 1990 D. Eisenhut NRC/TMI-80-003 B. Grimes R. Vollmer Docket No. 50-320 L. Chandler IE (3)

Mr. R. C. Arnold R. Reid Senior Vice President D. Dilanni C. Nelson Metropolitan Edison Company P. Kreutzer 100 Interpace Parkway Parsippany, NJ 07054 J. R. Buchanan, NSIC ACRS (16)

G. Kalman

Dear Mr. Arnold:

J. T. Collins R. Conte

-Sefeet-Penetration R-401 Temporary Seal J. Lee

Reference:

1.

NRC letter, J. T. Collins to J. G. Herbein, dated

.Cctober 12, 1979 2.

GPU letter, TMI-11-R-1129. R. F. Wilson to J. T. Collins, dated November 12, 1979 Item three of our cocoents, NRC letter, J. T. Collins to J. G. Herbein, dated October 12, 1979, addressed the need to seal Penetration R-401 to contain the Reactor Suilding sum water if procedure EP-33, " Core Cooling with No Reactor Coolant Pumps or Natural Circulation", were initiated. Procedure EP-33 calls for the injection of water from the Borated Water Storage Tank into the primary systea. The injected water is ultimately released to the Reactor Building sump through the pressurizer vent / relief valve pathway.

Your response to our concern, GPU latter, THI-ll-R-ll29, described a means to seal Penetration R-401 and you assured us that a procedure was being drafted to oerfom this operation if necessary. To date we have not received this procedure.

We are concerned that without the cacability to seal Penetration R-401 at the containment end, the problems associated with EP-33 implementation will be increased. Additionally a concern exists, even though the Reactor Building water level seet:s to have stabilized one and one-half feet below penetration R-401, that a seal may be necessary should the level begin to rise from in-leakage.

In your response, please specify when a procedure to seal Penetration R-401 will be available for our review and when the associated hardware will be ready for use.

J. T. Collins, Deputy Director NRC/TMI Technical Support Staff G.

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