ML20088A203

Responds to IE Bulletin 82-02 Re Severe Degradation of Threaded Fasteners in Closures of RCPB of Various PWR Plants.Summary of Bolting Exam Info Encl

ML20088A203
Person / Time
Site:	Point Beach
Issue date:	04/05/1984
From:	Fay C WISCONSIN ELECTRIC POWER CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
IEB-82-02, IEB-82-2, NUDOCS 8404110202
Download: ML20088A203 (4)

Text

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l%sconsin Electnc me comy 231 W. MICHIGAN, P.O. BOX 2046, MILWAUKEE, WI 53201 April 5, 1984 Mr. J. G. Keppler, Regional Administrator Office of Inspection and Enforcement, Region III U.

S.

NUCLEAR REGULATORY COMMISSION 799 Roosevelt Road Glen Ellyn, Illinois 60137

Dear Mr. Keppler:

DOCKET NOS. 50-266 AND 50-301 REPORT ON IE BULLETIN NO. 82-02 POINT BEACH NUCLEAR PLANT, UNITS 1 AND 2 In IE Bulletin No. 82-02 dated June 2, 1982, the NRC notified PWR licensees of incidents of severe degradation of threaded fasteners in closures of the reactor coolant pressure boundary of various PWR nuclear plants.

The bulletin instructed licensees to perform specific actions concerning threaded fasteners including an augmented inservice inspection of these threaded fasteners, specifically, bolting less than or equal to two inches in diameter.

As required by Action Item 4 of IE Bulletin No. 82-02, this report on Action Items 1 and 2 is submitted.

As committed to in our response dated August 11, 1982, Action Item 1 has been completed.

Point Beach Maintenance mechanics training is governed by Maintenance Training Qualification Guides which were upgraded in November 1982 in the area of Repairer I (TQ9.1) training.

The additional practical factors and knowledge factors required by this qualification procedure address those items discussed under Action Item 1.

The quality assurance measures for fastener lubricants and injection sealant compounds were previously discussed in our August 11 response.

Table 1 is a summary of bolting examination information gathered during the refueling outages of Point Beach Units 1 and 2 subsequent to issuance of IE Bulletin No. 82-02.

The bolting examinations'that were conducted were in accordance with the commit-men'ts outlined in our August 11 response.

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w Mr. J. G. Keppler April 5, 1984 The results of the remaining bolting examinations be conducted will be on file with the permanent inservice inspection records at Wisconsin Electric.

These results will be available for review if requested.

This fulfills the required written response to

.IE Bulletin No. 82-02.

Very truly yours,

[(.

Vice President-Nuclear Power C. W. Fay

-Attachment Copies to NyC Resident Inspectcr J RC Document Control, Washington, D. C.

(w/ original) l l

Subscribed and sworn to before me this 354(

day of April 1984.

t h

hN Y

Notary Public,~ State of Wibconsin My Commission expires,/)L,//fff.

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e TABLE 1 P _..g 1 1 of 2

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BOLTING INFORMATION NO STUD OR NITf BOLTING EXAMINED EXAMINATION EVIDENCE OF BOLT BOLT MATL MATL SIZE INPLACE/ REMOVED DEGRADATION RPV Flange 48 SA-540 SA-540 6"

Removed (U2)

MT 4/83(U2)

None RCP Main Flange 24 3.5" Inplace (U2) 4/83 (U2)

None B

M

_)

RCP Stal Assembly Flang3 Upper 12 (1) 1-1/4" 1982 U2 (2)

RCP S::a1 Assembly Flang3 Lower 18 (1) 1-3/4"

^

SG Manway 32 1-7/8" Removed (U2)

MT 4/83(U2)

None R

SA-193 SA-194 1981 Ul(2)

Pressurizer Manway 16

~!"

GR-B7 GR-2H 1977 U2 (2)

Gate Valve RH-700 SA-193 SA-194 Inplace (U1)

VT-1 ll/82 (Ul)

None (Ul)

Body-to-Bonnet 16 GR-B7 GR-211 Removed (U2)

MT 4/83 (U2)

None (U2)

Gate Valve RH-701 SA-193 SA-194 Body-to-Bonnet 16

-/"

ed W2)

IM6 Ul(2)

E V83 (U2)

None (U2)

GR-B7 GR-2H Gate Valve RH-720 SA-193 SA-194 Body-to-Bonnet 16 GR-B7 GR-2H Check Valve SA-193 SA-194 SI-842A 16 GR-B7 GR-2H Body-to-Cap

TABLE 1 Pag 4 2 of 2 e

BOLTING INFORMATION PAST CIDSURE LEAKAGE BOLT BOLT MATL MATL SIZE INPLACE/ REMOVED DEGRADATION (YEAR)

METHOD DATE Check Valv SA-193 SA-194 SI-842B 16

~

GR-B7 GR-2H Body-to-Cap eck Valve SA-193 SA-194 Inplace (Ul)

VT-1 ll/82 (Ul l

.-e SI-867A 16 GR-B7 GR-2H Body-to-Cap 1

eck Vah SA-193 SA-194 Inplace (Ul)

VT-1 11/82(Ul l

None SI-867B 16 GR-B7 GR-2H Body-to-Cap Check valv SA-193 SA-194 SI-853A 12

~

GR-B7 GR-2H Body-to-Cap corrosion wastage.

InP ace (U2)

VF-1 4/83 (U2)

None l

^^

^~

S 83 12 1-5/8" Body-to-Cap

~

~"

Chick Valv SA-193 SA-194 SI-853C 12 1-5/8" GR-B7 MH Body-to-Cap Check Valve SI-853D 12 SA-193 SA-194 1-5/8" Body-to-Cap GR-B7 GR-2H NOTES:

(1)

Westinghouse specification No. BDS70041AL (2)

Replaced gasket (3)

Seal welded body-to-bonnet connection and lubricated and retightened the bolting.

(4)

For each case of leakage, a visual exam was performed of connection af ter repairs to verity leaktight integrity at normal operating pressure.