ML19242D015

Forwards Interim Deficiency Rept Re Svc Water Supply Pressure for Containment Air Coolers.Util 790711 QA Program Mgt Corrective Action Rept Encl

ML19242D015
Person / Time
Site:	Midland
Issue date:	08/07/1979
From:	Howell S CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19242D016	List: ML19242D015 ML19242D021
References
HOWE-219-79, NUDOCS 7908140360
Download: ML19242D015 (2)

Text

1

-

7 4 -$'?T C0liSl!UlC!S l

V1.I

' f' I?0!'i8f g' Stephen H. Howell e Senior the i. sslent

.

General Of fices: 1945 West Parnall Fload, Jackson, Michigan 49201. (517) 78 3 O *M August 7, 1979 Hove-219-79 Mr J G Keppler, Regional Director Office of Inspection end Enforcement US Nuclecr Regulatory Cosmicsion Region III 799 noosevelt Road Glen Ellyn, IL 60137 MIDLfGD HUCLEAR PLAIC -

UNIT H0 1, DOCKF?T N0 50-329 UITf NO 2, DOCKLT UO 50-330 SERVICE VATER SUPPLY FRESSURE IOR TRE CCUTAIIMEIT AIR COOLERS In accordance with the requirements of 10 CFR 50 55(e), this letter constitutes on interim report on the status of the design dicerepancy regarding the failure to obtain the required design pressure at the outlet of the contain-cent air coolero.

The ottachments to this letter provide a deceription of the discrepancy, potential safety implications, invectigation and planned corrective actions.

Another report, either interin or final, vill be sent on or before October 15, 1979

,f -

\7 Attachments: 1. Quality Assurance Program, Management Corrective Action Report, MCAR-1, Report 30, dated July 11, 1979

2. MCAR-30, Interim Ecport yl, dated August 2,1979 CC: rirector of Office of Incpection and Enforcement Att: Mr Victor Stello, USNRC (15)

Djrector of Office of Mancgerent Informntion and Program Control, U3NRC (1) 655 149 7908140 3 80 8

.

~

QUALITY ASSURANCE PROGRAM Attac5ent 1 1j'

'~

MANAGEMENT CORREC11VE ACllON REPORT H "041949 MCAR 1 REPORT NO. 30 JOB NO. -_Z220 0 NO. 4.19 ___ DATE _J3 1Z_Il _197_9 2 I ' DESCRIPTION (Including references):

During norna11y perfomed final systen flou diagran review, Project Fngineering discovered that Lbe service water supply pressure to the centainacnt air coolers under an accident c ndition is noch less than the requirerents stated in FSAR 6.2.2.2.3. Consequently the containnent air ecolors could not rerove heat frcn the containrent as described in FSAR Section 6.?.2.2 and 9.2.1.3 following a rain steam line' treak or loss of coolant accident.

Bechtel's initial review has deternined the deficiency is potentially reportable.

i

• RECOMMENDED ACTION (Optianal)

1. De*2rnine the effect on plant safety that would have resulted had t.he calculation arror gone undetected and determine if the condition in reportable.

2. Detemine the root cause of the condition and take all necessary corrective action to preclude recurrence. State the proce.w corrective actions tahen.

3. If reportable, state the corrective action taken to assure plant s'fety.

REFERRED TO W ENGINEERING O CONSTRUCTION GOA MANAGEMENT I l ._ _ _ _

O PROCUREMENT h*

IS' Lb B

• O'OSEIS Oll0 N 7/11/79 Potentially Reportable Prorc t o A Enr.ecr Dai, ll REPORTABLE DEFICIENCY Julv 9, 1979 l /NOJIFIED CLIENT hhNDio  %

Da./. L , '/jf, >

l s 0 NO O YES ' t

_

< Pror d r.%q. r

,

a Ill CAUSE l

CORRECTIVE ACTION TAKEN l

i i

!

AUTHORIZED BY _

l _ _ _Date l

STANDARD DfSH00UDON ADDM'ONAL DGTRBUUON AS AFPHCPHIAT E twiuc+. ci vaw.t n e *<. +. * < > . . v e . v.i + FORMAL REl'ORY TO CLIENT _

c. sac.,n o,u. wo c,en o. u.s. ,, n cuo u , i e . . r n (if Section 11.(pphes) Da:e sia on ,u,,o v. s: oncer o ceuir . e..n taro ca easa:.t n t w n m * ,vr.oi" AAO CA MasAG[H PNU 5. Ci sw u C. W .' a M ANm .i H Pf tOsf C f M ANmt A CHtFJ' W H E t*J 'rfn .

i cue st rr ect 440 onoer c f ort n*'e ; U ".ac.i 4 raw r n 5 nxont vt ..r ec.n CORRECTIVE ACTION IMPLEMENIED a 40 053 ACON { 4.! if U AN L4~,I H l 4 Ao uc.n or t . srro w I 40.) I e 4 s Ul '.'l 'e r W.*I

• I~ b A AO Mt.H (# (C 6 f n: st:14?"J o v sw e ., n on Au r v ut.n

{T d" 1

, s \,)

VERIFIED BY

!

• twt * = v*

• rem *i.1 asu ' < a <..e. . ~ c <*c.c . -re' Project GA Lnynor D.ito

, _ - . . . . . . . - - . . . . - - -

D