ML19338C612

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Advises of Inability to Meet W/Acrs on 800808 to Discuss ACRS on Hydrogen Control at Sequoyah.Requests ACRS Opinion Re Addl Control for Ice Condenser Containments & Effectiveness of Distributed Igniters.W/O Encl Papers
ML19338C612
Person / Time
Site: Sequoyah  Tennessee Valley Authority icon.png
Issue date: 08/07/1980
From: Gilinsky V
NRC COMMISSION (OCM)
To: Plesset M
Advisory Committee on Reactor Safeguards
References
NUDOCS 8008180303
Download: ML19338C612 (1)


Text

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%, ' u s OFFICE OF THE August 7, 1980 COMMISSION E R Milton S.

Plesset Chairmin Advisory Committee on Reactor Safeguards U.S.

Naclear Regulatory Commission Washington, D.

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20555

Dear Dr. Plesset:

I regret I will not be able to meet with the Committee on Friday.

I had hoped to discuss with the Committee its letter of July 15, 1980 to me on hydrogen control measures at Sequoyah.

I am not sure I understand it.

If I may sharpen my original questions:

(1)

Does the Committee believe additional hydrogen control measures are necessary for ice condenser containments?

(2)

Is the Committee reasonably persuaded of the effectiveness of distributed igniters in ice condenser containments?

Can such igniters be counted on to keep pressure increases caused by hydrogen burns at suitably low values --

which I would define as design pressures -- during accident sequences involving TMI-like quantities of hydrogen?

I would appreciate the Committee giving these questions its close attention.

We are after all not talking of dealing with remotely hypothetical events but of protecting against what was experienced last year.

As you know I have had R&D Associates examine the Sequoyah containment strength and the potential effectiveness of igniters.

Two RDA papers are attached for your information.

Sincerely, 9

Victor Gilinsky Commissioner

Attachment:

a/s cc:

Chairman Ahearne Commissioner Hendrie Commissioner Bradford 9002/20$0S