ML19339A510
| ML19339A510 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 10/10/1980 |
| From: | Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 9047, 9858, IEB-80-05, IEB-80-5, NUDOCS 8011040163 | |
| Download: ML19339A510 (3) | |
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7 /C.
t Of CORSumBfS POWct hf L'act hessJent, %Jf and hospect r,eneral of fices 1945 West Peenate Road, Jackson,1 Ochegan 49201 e (517) 788 064 o October 10, 1980 Mr James G Keppler, Regional Director Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn, IL 60137 MIDLAND PROJECT DOCKET NO 50-329, 50-330 IE BULLETIN 80-05 FILE: 0505.12 UFI: 99*02*05*10 SERIAL: 9858 REFERENCE (A) CP CO LETTER SERIAL 9047, DATED 6/9/80 This letter completes our response to the subject IE Bulletin. Notes (3), (4) and (5) presented in the table of Reference (a) have been revised to reflect the action taken (See attached table) to mitigate the problems in the Bulletin.
l!!f) b-JWC/JNL/pg CC Director, Nuclear Reactor Regulation Director, Office of Inspection and Enforcement DHood oc1080-0051a100 0C1 1 4N I
8011040163 g
RESTONSE TO 1E BULLETIN 80-05 Adequate Vacuta Corrective Action Vacutn Protection Protection System Taken or Planned _
Verified Provided Systen/Cornponent Reviewed None Yes Vacuta breaker Pressurizer quench tanks Yes N cover gas IT-53/2T-53 See Note 3 Yes H /N e ver gas
}takeup tanks IT-58/2T-58 2 2 None Yes N e ver gas Boric acid addition tanks 2
IT-70A,B,C; 2T-70A,B,C CD None Vacuta breaker (1,2)
Yes LWS receiver tanks 0T-38A, F,C,D Vacutn breaker ( '}
Yes en None LWS drain tanks OT-89A,B None Vacuin breaker (I'2 Yes Chenical waste receiver tanks OT-83A,B Vacute breaker (1,2) 7,,
LWS concentrate monitor tanks OT-90A,B,C,D II'U Yes None Vacuta breaker LWS monitor tanks OT-95 A,B See Note 4 II'2)
Yes Vacutn breaker Reactor coolant ptnp seal Yes N cover gas drain tank 1T-85/2T-85 See Note 5 1,2)
Yes vacutn breaker Eqidpment drain tank OT-86 A,B Yes N cover gas See Note 5 Yes Vacuin breaker BRS receiver tanks OT-82A,B,C,D Yes N cover gas 1,2)
Yes None vacuin breaker
.BRS concentrate tanks OT-91 A,B fioTES:
(I) Inverted U-tubes are attached to the vacuin breaker inlet to prevent dust accumulat
o Notes for Response to IE Bulletin 80-05 Cont'd (2) Loop seals also provide protection against tank collapsesdue to pump suction vacuum.
( }For energency (safety-related) operation, the makeup tank is not used.
For normal plant operation, the conservative end no desikn/11 f unctionability of the N v r gas system has been reviewed. The design was found to be 2changes were required.
(4)A vacuum breaker and an N r gas system were added to the system design to mitigate the problems cv 2
identified in IE Bulletin 80-05.
The vacuum breakers are adequately sized to protect the tanks.
A new trim for nitrogen control i
Valve OPV-8065B was ordered to meet the maximum flowrate requirements of the nitrogen cover gas system.
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