ML20008F575

Interim Deficiency Rept 4 Re Loose Hanger Std Parts Bushings.Spacer Sizes & Bearing Movement for Dimensional Analysis Provided to Bechtel.Only One Mechanical Shock Arrestor Can Dislodge from Bushing.Next Rept by 810529

ML20008F575
Person / Time
Site:	Midland
Issue date:	04/10/1981
From:	Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, 11968, MCAR-42, NUDOCS 8104210290
Download: ML20008F575 (3)

Text

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O Consumers Power C0mpanY James W Cook Vice President - Projects, Engineenng and Construction General Officas: 1945 West Parnall Road, Jackson, MI 49201 * (517) 788 0453 80-05 #h April 10, 1981 Mr J G Keppler, Regional Director Office of Inspection & Enforcement c

US Nuclear Regulatory Cccmission Regica III g

799 Roosevelt Road p [4 Glen Ellyn, IL 60137 9

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MIDLAND PROJECT 3

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SWAY STRUr RCD ENDS DEFICIENCY g

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DOCKET NOS 50-329, 50-330

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FILE:

0.h.9.h2 UFI:

73*10*01, 152h0(E) SERIAL:

11968 s\\

19

References:

CFCo letters to J G Keppler, Same

Subject:

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1.

Serial 978h, dated October 31, 1980 2.

Serial 11009, dated January 15, 1981 3

Serial 11501, dated February 27, 1961 This letter, as were the referenced letters, is an interim 50.55(e) report concerning the sway strut rod ends deficiency.

Enclosurt describes the status of the resolution as of March 26, 1981.

Another report, either interin or final, will be sent en or before June 12, l

1981.

I WRS/1r l

Enclosure:

(1) MCAR 42, Interin Report No 4 (March 26,1961), " Loose Hanger Standard Parts Bushings" 1

CC: Director of Office of Inspection & Enforcement Att d'r Victor Stello, USNRC (15)

Director, Office of Management l

Information & Program Control, US:iRC (1)

RJCook, US:iRC Resident Inspector Midland Nuclear Plant (1) 8104210 D

2 Serial 11968 80-05 #h CC: CBechhoefer, ASLB RSDecker, ASLB FFCowan, ASLB AS&L Appeal Panel MMCherry, Esq MSinclair CRStephens, USNRC WDPaton, Esq, USNRC FJKelly, Esq, Attorney General SHFreeman, Esq, Asst Attorney General GFIaylor, Esq, Asst Attorney General WEMarshall GJMerritt, Esq, TNKftJ

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80-05 #h Serial 11968 Bechtel Assoc. tes ProfessionalCorporation ia

SUBJECT:

MCAR 42 (Issued 9/24/80) 02539i Loose Hanger Standard Parts Bushings INTERIM REPORT 4 DATE:

March 26, 1981 PROJECT:

Consumers Power Company Midland Plant Units 1 and 2 Bechtel Job 7220 Status of Corrective Action and Investigation The status of actions in progress for resolving the management correc-tive action report (MCAR) is as follows:

1.

Corner and Lada, Inc. has submitted an alternative fix to the staking procedure previously submitted which involves using spacers as requested. Corner and Lada, Inc. stated its product warranty will remain in effect using the appropriate sized spacer / washer for its sway struts. Corner and Lada Inc. have not yet provided (as requested) sufficient infomation to perfom a complete dimensional analysis using spacers. Required infomation has again been re-quested from Corner and Lada, Inc.

2.

NPS Industries, Inc. submitted its recommendation that installing a flexible bearing retainer with the spacers / washers would be an acceptable alternative to staking. NPS Industries, Inc. did not provide specific infomation concerning size and material for the flexible bearing retainer data on the spacer / washer sizes for dimensional analysis acceptance. Bechtel is continuing to pursue NPS Industries, Inc. for this infomation.

3.

Bergen-Paterson Pipc Support Corp. provided infomation required to do a dimensional analysis for using washers to prevent complete bushing dislodgement. Investigation indicates that the Bergen-Paterson bushings will not become totally dislodged if its recom-mended size washers are installed.

4.

Grinnell had previously agreed that the use of spacers was acceptable and has provided Bechtel with spacer sizes and bearing movement necessary for dimensional analysis. Investigation indicates that of all size sway struts and mechanical shock arrestors provided by Grinnell, only one mechanical shock arrestor (Figure 306/307, Size

1) can dislodge from its bushing. Grinnell indicated this is a remote possibility and did not recommend any additional remedial action other than restaking. Bechtel is investigating the accepta-bility of Grinnell's resolution.

The next report on this subject is scheduled for May 29, 1981.

/W Submitted by:

Approved by:

b l!.3,2 bR Concurrence by:

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