ML19345B825

Interim Deficiency Rept Re Helba Restraint Design.First Reported in JW Cook 800919 Ltr.Civil Group Has Initiated Reanalysis of Pipe Whip Restraints Using Peak Thrust Forces. Interim Rept Will Be Provided by 810403

ML19345B825
Person / Time
Site:	Midland
Issue date:	12/01/1980
From:	Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10070, 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8012020577
Download: ML19345B825 (12)

Text

_ _ _ _ - _ _ _ _ - _ _ _

l s- y/ James W cook u p g g qlg uusssysel e Vice Presdent - Projects, Engsneenng and Construeskn General Officas: 1945 West Parnail Road, Jackson, MI 49201 * (517) 78& O453 Dece=ber 1, 1980

'l Mr J G Keppler, Regional Director ->

Office of Inspection & Enforcement -l US Nuclear Regulatory Cec: mission __

Region III 799 Roosevelt Road Glen Ellyn, IL 60137 MIDLAND NUCLEAR PLANT

~

UNIT NO 1, DOC EI NO 50-329 '

UNIT No 2, DOCKET No 50-330 HELEA RESTRAINT DESIGN FILE: 0.h.9.El UFI: 73'10'01, h2*10'03 SERIAL: 10070

Reference:

(1) J W Cock letter to J G Keppler; Same Subject; Serial 8830, dated Septe=ber 19, 1980 This letter, as was the referenced letter, is a 50 55(e) interim report concerning EELBA restraint design.

The enclosure to this letter describes the conditions and corrective acticn status concerning this ites.

Another report, either interis or final, vill be sent en or before April 3, 1981.

WRB/1r

Enclosure:

MCAR h0, Interis Report 2 High Energy Line Break Analysis (HEL3A), Pipe Whip Restraint Designs, dated November 17, 1980

., ,, .. CC. Director of Office of Inspecticn & Enforcement Att Mr Victor Stello, USNRC (15) rector of Office of Management 80/7 Infomation and Program Centrol, USNRC (1) ,,$ '

I i R Cook, USNRC Resident Inspecter Midland Nuclear Plant (1)  !

8 0120 soy 77

Serial 10070'

' CC: C3echhoefer, ASLB Panel GALinenberger,-ASLB Panel

-FPCowan, ASLB Panel

-AS&L Appeal Panel MMCherry,'Esq MSinclair CRStephens, USNRC WDPaton, Esq, USNRC FJKelly, . Esq. Attorney General SHFreeman, Esq, Asst Attorney General GTraylor, Esq, Asst Attorney General .

WiMarshall GJMerritt, Esq. TNK&J k

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l I

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SUBJECT:

MCAR 40 (issued 8/26/80)

High-Energy Line Break Analysis (HELBA) Pipe Whip Reatraint Designs ,

~

INTERIM REPORT 2 DATE: Novemb.c 17, 1980 PROJECT: Consumers Power Company Midland Plant Units 1 and 2 Bechtel Job 7220 Introduction This report in submitted regarding the interim status and actions pur-suant to the subject MCAR.

Status of Action Items

1) The nuclear high energy line break analysis (HELBA) group has developed and provided data necessary to perform the reanalysis of the pipe whip restraint designs for location (plastic hinge lengths) and siva (energy balance method).

2) The civil group has initiated the reanalysis of the pipe whip restraints using the peak thrust forces.

T; The review of the nuclear HELBA group assumptions by the chief engin1ers of fice is in process. No concern of similar signifi-cauce has been identified.

Status of Restraints The attachment provides a status of the 325 pipe whip restraints potentially affected by the concern of MCAR 40.

O v e

Pegn 2 4

i Schedule , ,

i- The development of conservative thrust force transiente has been completed.

The remaining engineering ef fort on 'the potentially af fected restraints has been divided into th.ee major phases. Phase ' consists of an energy balance analysis and plastic hinge length determination to verify the ,

integrity and location of the restraint. If the results of Phase I

~

indicate that a more detailed Phase II review is required then a time history analysis is' performed. ~ Phase.III consists-of any design changes that are required as a result of the reanalyses.

1 It is forecasted that completion of the significant milestones will be  !

1 as follows:

l

, Forecasted 1 Milestone Definition Completion Date Phase I Energy balance analysis June 1, 1981 Phase II Time history analysis January 1,1982 Phase III Design modification September 1, 1982 It is noted that the reanalysis is integrated into the normal HELBA production work. and as such, does not readily allow differentiation of I

the effects or f. CAR 40 from the effects of other modifications.

i Submitted by:

C/

,4 _

Approved by: ,

. syf Concurrence by: [-

pq y,_-

1 JAC/LHS/ksc 11/5/6-

Attachment:

Status of Pipe Whip Restraints Affected by MCAR 40, 8 Sheets N

4

, - -. - ._r ,----4 ,--.---.e.s,, -- -y ,,y, w

AttOthment 1 (8 She;t';) ,

Hilst. ANIS UHlTS 1 Ants 2 STATUS CF PIPE WillP CESTRAINTS AFFECTEls NY McAlt 43 Q .

Restr Mod. Mod.

Needed Needed Pipe lusta11 Cotais t r Size OK Loc OK Size OK Loc OK System ID Hestraint lin do J)_ lloid Phase i Phase I Phase il fiase il _ Size _ I.oc In:s a de Coasta a sument Dil tetunn line PH-630-2-6 HedcLor 50 No

, Dit return line PR-610-2-7 Heactor 50 No Dll actutti line PH-610-2-8 Heactor 50 No DIl tetutn Inne PH-610-2-10 Deactor 50 No

• Dil seturn line Pit-6td-2-11 Heactor 50 No Dit retuin line PH-614-2-12 Heactor 50 .c '

Dit seturn line PH-610-2-14 14eac tor 50 No I)ll retut ti line l'H - 61 1 1 Heactor 100 No I)ll returse lanc Pit-611-2-2 14eac tor 100 No l>Il tetutn line F14-611 3 Heactor 100 No Dit acturn liene l' H - 61 1 4 14cactor 100 No I)ll a c tu; n l i ne PH-681-2-b l4cac tor 100 No f all s eturn line Plt-611-2 Heactor 100 No

• fall retutti line Pit-611-2-9 Heactor 100 No '

Dit seturse lisse Pa4-611-2-10 14 eac to r 100 No Dil t eturn line PH-611-2-12 14cactoi 0 No

• Dit teturn line PH-6tt-2-13 14eactor 0 I4o 1)ll t e tu rn l a ne PH-611-2-14 14cac to r 100 No Dll retusn line PH-611-2-21 Heactor 100 No MFW PR-638-13-5 Heactor 0 No

' MIW PH-630-13-6 14eactor 0 No MFW PR-638-13-7 I4eactor 0 No

• PH-638-13-8 Heactor 0 No Mtv PH-638-13-9 14eactor 0 No MtW PH-63ft-13-14 Huactor 0 No Mtv Mlv rl4-630-13-15 Heactor 0 No HFW Pit-630-13-16 14eactor 0 No PH-638-13-17 Ideacto r 0 No Mtv PH-638-13-18 14eac to r 0 No Hiv Mtv PH-638-13-19 Heactor 0 No

• Mtv PH-630-13-20 Iteactor 0 No ,

PH-610- : 2-21 14eactor HA No .

MFW HFW PH-639-13 2 Heactoe 100 No HIM Pit-639-13-16 Heactor 50 No Mtv P14- 6 3 9 17 14eactor 50 No Mtv PH-639-13-10 Heactor 30 No HIV PH-639-13-29 Hedctor 50 No MtV PH-639-13-35 Heactor 100 No At w PH-630-14-4 Heactor 0 No Pa9e 1 11/6/80

• See Interim Report 2 under schedule for definitions of Phase I and Phase II.

W. ya -% a g e . ."e s

MIDLAND UNITS 1 AND 2 I'1pe whip Restraints Affected by MCAR 40 (Continued)

Restr Mod. Mod.

System. Pipe Install Constr Size OK Loc OK Size OK Loc OK Needed Needed

!~ ID Restraint Bldo __f% [__ lloid Phase I Phase ! Phase II Phase II Size I,oc AFW PR-638-14-6 Heactor 0 No AFW PR-638-14-7 Reactor 0 No AFW PR-638-14-9 Reactor 0 No

. AFW PR-638-14-11 -Heactor 0 No AFW PR-630-14-12 Heactor 0 No AFW PR-630-14-IS. Reactor No AFW- PR-630-I4-17 Heactor 0 No AFW PH-630-14-18 .Heactor .NA No AFW PR-630-14-19 Iteactor 0 No AFW. PR-630-14-20 Heactor 0 No AFW PR-630-14-21 Reactor 0 No AFW 'PR-638-14-23 Heactor 0 llo AFW PR-630-14-24 Reactor 0 No AFW PR-630-14-25 Heactor 0 . No AFW PR-630-14-26 Heactor -0 No ,

AFW PH-639-14-2 Reactor 100 No AFW 'PR-639-14-4 Iscactor 100 No AFW l'R-639-14-5 Reactor 100 No

• AFW PR-639-14-6 Heactor 100 No AFW PH-639-14-7 Reactor 0 No AFW PR-639-14-8 Heactor NA No AFW .PH-639-14-13 Reactor 0 No AFW PR-639-14-14 Iteactor 100 No AFW PH-639-14-15 Heactor 100 No AFW PR-639-14-16 Itcactor 0 No AFW PR-639-14-17 Reactor 0 llo AFW PR-639-34-10 Heactor 0 No AFW PR-639-14-19 Itcactor 0 No AFW PR-639-14-20 Ileactor 0 No AFW PR-639-14-21 Heactor 0 No AFW PR-639-14-22 Heactor 100 No AFW PR-639-14-24 Heactor No iRZR Helief PR-601-3-10 lleactor 0 No a .

l'RZR Relief I'R- 6 01 14 Reactor 0 No

• PRZR Relief PR-6-1-3-16 Reactor 0 No s

PHZR Helief PR-602-3-10 Reactor 0 No l'RZR Helief PR-602-3-14 Ileactor 0 No PRZR Helief PR-602-3-16 Heactor 0 No llPI. Normal MU PR-603-I-l Reactor 0 No llP l . Notmal MU PR-603-1-2 Heactor O 14 0 llP I . Normal MU PR-603-1-3 Reactor 0 No llP l . 14ormal MU PR-603-1-8 Ileactor 0 No Page 2 11/6/80 1

MIDLAND UNITS 1 AND 2 Pjpe Whip Restraints Af fected by McAR 40 (Continued)

Restr Mod. Mod.

System Pipe Install -Constr Size OK I,oc OK Size OK Loc OK Ne<eded Needed -

ID Hestraint Bido _ j%L _ lloid Phase ! Phase ! Phase !! Phase II Jize Loc IIP I ' Normal MU

, PR-603-1-9 Heactor 0 No llPI, tioamal MU PR-603-1-10 Reactor 0 No llPI, Notmal MU PR-603-1-11 Reactor DNA No ILPI, teotmal MU PH-603-1-12 Heactor NA No a

llPl. Normal MU PR-604-1-15 Heactor 0 No IIPl. flormal MU PR-604-1 5*18 Reactor 0 tJo llPI, IJormal MU PR-604-1,21 Reactor 0 No llP l . IJormal MU PH-604-1-23 Reactor 0 tio ilP I , 24ormal.MU PR-604-1-24 Reactor 0 No llP I , 140tmal tIU PH-604-1 Reacter 0 .No llP I , tiormal MU PH-604-1-27 Reactor 0 No IIPI, IJormal MU PR-604-1-29 Reactor 0 tJo -

IIPI .' 140s mal MU PH-604-1-33 Heactor 0 No llP ! , Normal MU PR-604-1-41 Heactor- NA No

• llP I , fiormal MU..PR-604-1-42 Reactor NA No llPI,'llotmal MU PH-604-1-44 Reactor NA No llPI, Normal MU PR-604-1-45 Reactor NA No I.etdown "H-603-3-2 Reactor 0 No I,etdown Pat-603-3-4 Reactor 0 No Letdown .PR-603-3-6 Reactor 100 No Letdown PR-603-3-7 Reactor 100 No I.etdown PR-603-3-8 Heactor 100 llo

. I.e t stown PH-603-3-9 Heactor 100 No

' Le tdowas PR-603-3-10 Heactor 0 No I.e t s'ow n PR-603-3-11 Heactor 0 No 1.ctdown 'PH-603-3-12 Heactor 0 'No Letdown PH-603-3-15 Heactor 0 No 1.or t alow n Pit-603-3-22 Reactor 0 No Letslown PR-604-3-2 Heactor 0 No Le tilown Pit-604-3-4 Heactor 100 No Letdown PR-604-3-5' Heactor 100 No .

Letdown PR-604-3-6 Heactor 0 No l Letdown PR-604-3-7 Reactor 0 No a Letdown PR-604-3-9 Heactor 100 No Letdown PR-604-3-10 Heactor NA No 1.ctdown I'll-6 04 13 lteactor 0 No 1.c ta town PH-604-3-24 f(cactor 100 No I.u telown PI4-604-3-25 Heactor 100 No Letdown PR-604-3-30 Reactor 100 No I.eldown PR-604-3-40 Heactor 0 No 1.c tilown PH-604-3-50 Reactor 100 No I.c tilown PH-604-3-52 lleactor o tio Page 3 11/6/80

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