ML17326A606
| ML17326A606 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 03/25/1980 |
| From: | Dolan J INDIANA MICHIGAN POWER CO. (FORMERLY INDIANA & MICHIG |
| To: | Harold Denton Office of Nuclear Reactor Regulation |
| References | |
| AEP:NRC:00295B, AEP:NRC:295B, NUDOCS 8004010486 | |
| Download: ML17326A606 (3) | |
Text
RE'GULA TORY NFORVAT IO'4 DISTR IHUT IO."> SY~E~
(BIOS)
ACCESSION NBR:8004010~86 OOC.OATE: 80/03/25 NOTARIZEO:
NO FACIL:
onal d C ~
Cook T'tuel ear Power P
1 ant E
Uni t 1F Inai ana 0-316 onald CD Cook 'nuclear Power Planti Unit 2P Inaiana AUT.,'UTHOR AFFILIATION OOLANFJ ~ E Indiana 4 Michigan Electric Co ~
RECIP s NAT4IE RECIPIENT AFFILIATION QET4TQNEH ~ RE Office of Nuclear Reactor Regulation SUBJECT; Advises that uograded radiation monitoring channels inside containment will be installea durina first outage of sufficient duration subseauent to eauioment delivery.Reset feature does not affect oosition of control room damoers, DISTiTIHDTION CODE:
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lITLE: Containment Purging i.o TEs: SePsg,3 I"J$
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INDIANA K MICHIGAN ELECTRIC COMPANY P. O.
BOX 18 BO WLING GR E EN STATION NEW YORK, N. Y. 10004 March 25, 1980 AEP:NRC:00295B Donald C.
Cook Nuclear Plant Unit Nos.
1 and 2
Docket Nos.
50-315 and 50-'316 License Nos.
DPR-58 and DPR-74 Mr. Harold R. Denton, Director Office of Nuclear Reactor Regulation U. S. Nuclear, Regulatory Commission Washington, D.
C.
20555
Dear Mr. Denton:
This letter responds to requests from members of your staff concerning the matter of containment purging during normal operation.
Specifically, a potential concern was identified during the purge system review dealing with the control room isolation function and its override circuitry.
Also, we were requested to provide a
commitment to upgrade the status of the containment radiation monitors in relation to the automatic initiation of Containment Ventilation Isolation.
With regard to the control room isolation concern, the circuitry under discussion is a component level reset that even if actuated will not prevent initiation of control room isolation by a safety injection signal (i.e., this reset action does not block the control room isolation function at the system level).
Use of the reset feature does not affect the position of the control room duct dampers.
The operator reopens the dampers by operating the control switch after the initiating closure trip signal has been reset.
With regard to the containment radiation monitors and as a result of our review of the requirements of NUREG-0578, we have already made plans to upgrade the containment area monitor which initiates Contain-ment Ventilation Isolation to safety grade/Class lE status.
The up-graded radiation monitoring channels inside containment will be go39 5
~/a 069.COD O Pg,
Mr. H.
R. Denton AEP:NRC:00295B installed during the first outage of sufficient duration subsequent to equipment delivery.
Very truly yours, John E. Dolan ice President JED/emc cc:
R.
G.
R.
R.
D.
A.
C. Callen Charnoff S. Hunter ll. Jurgensen V. Shaller - Bridgman Udy -
EGIIG