ML19351A215
| ML19351A215 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 06/23/1981 |
| From: | Bickwit L NRC OFFICE OF THE GENERAL COUNSEL (OGC) |
| To: | Mcgarry J DEBEVOISE & LIBERMAN |
| References | |
| NUDOCS 8106260301 | |
| Download: ML19351A215 (1) | |
Text
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NUCLEAR REGU4.ATORY COMMISSION S
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erm June 23, 1981
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l CJ J. Michael McGarry, III, Esq.
Debevoise znd Liberman 1200 Seventeenth Street, N.W.
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e-Washington, D.C.
20036
Dear Mr. McGarry:
The. Commission has scheduled an open meeting for Wednesday, June 24, 1981 at 2:00 p.m. as part of its consideration whether the Licensing Beard's May 26, 1981 decision should become effective._ At'this meeting the Commission requests
-that the parties address orally the following questions:
1.
In view of the factLthat subst'antial quantities of hydrogen were evolved during the TMI accident before containment pressure significantly exceeded 3_psig, what is the basis for selecting the 3.psig containment pressure signal as the appropriate trigger for energizing the igniter system?
Should the trigger instead be safety injection?
2.
In view of the fact that the effectiveness'of the hydrogen control system depends in part on opera-tion of air retu2.n fans and the hydrogen skimmer fans in conjunction with the igniters, is it rea-sonable to switch on the igniters at a lower pressure than the trigger set point for the' air return fans and the hydrogen skimmer fans?
Is it feasible to switch on the air return fans and er 4
hydrogen skimmer fans at containment pressures p
less than 3 psig without the possibility of nega-1 tive containment pressure or other adverse factor b
2 pM, 25 fgg
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Dg Sincerely, y
I ell p,.
Leonard Bickwit, Jr.
i General Counsel Q *e o S
____ _.... 81 D.6 2.6 0 3_Q1,___ _
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