ML20009A734
| ML20009A734 | |
| Person / Time | |
|---|---|
| Site: | Mcguire, McGuire, 05000379  |
| Issue date: | 06/23/1981 |
| From: | Bickwit L NRC OFFICE OF THE GENERAL COUNSEL (OGC) |
| To: | Jeffrey Riley CAROLINA ENVIRONMENTAL STUDY GROUP |
| Shared Package | |
| ML20009A733 | List: |
| References | |
| REF-10CFR9.7 NUDOCS 8107140039 | |
| Download: ML20009A734 (1) | |
Text
d b#&
~
3%
UNITED STATES
,f,,
NUCLEAR REGULATORY COMMISSION
\\
Q WASHINC 'CN. D. C. 20555
/
f.!
g_
g '
%f% f
?. ~
4,..
June.23, 1981
- .,{.-
l -
,f ',.. \\ -,,
(s.
- s Mr. Jesse L. Riley, President Carolina Environmental Study Group g, -,.
,' 7,
/,,
854 Henley Pl&ce N('
- s. [,.
'/
Charlotte, N.C. 28207 v g j.'
Dear Mr. Riley:
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 Board's May 26, 1981 decision should l
become effective.
At Gis meeting the Commission requests j
that the parties address orally the following questions:
1.
In view of the fact thst.ubstantial quantities of hydrogen were evolved duff.ng the TMI accident before containment pressure significantly exceeded 3 psig, what is the basis for selecti.3a the 3 psig containment pressut2 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 return 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 hydrogen skimmer fans at containment pressures less than 3 psig without the possibility of nega-tive containment pressure or other adverse factors?'
Sincerely, S
b-Leonard Bickwit, Jr. (
General Counsel l
/
0107140039 810624 PDR ADCCK 05000369 T
PDR e