ML20136C042

Site Problem Rept 161:during Ultrasonic Insp of 1A Flywheel, Insp Cover Bolt Was Trapped Between Flywheel & Shroud Covering Flywheel,Preventing Shaft Rotation.Bolt Removed & Flywheel Inspected

ML20136C042
Person / Time
Site:	Three Mile Island
Issue date:	12/21/1977
From:	Culberson D, Pletke L, Rise D BABCOCK & WILCOX CO.
To:
References
TASK-TF, TASK-TMR 161, PROB-771221, NUDOCS 7909140284
Download: ML20136C042 (2)

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REPORT TRA!!S!!ITTAL l I

• • • • CLEARED **** .

I FILE: 13-4 -/6/ l 70: 6/u?n't.' < o., , mo z. For D3stribution CONTRACT NO: 620-0006 l S . jl. Klein - Quality Assurance .

3pg ,g j Central Engineering Files TI'I'LE A B m m'd l J. Q fg y,p f. Ta1.k Enginecr ,py, l

t. . /P. 19 )r ry t ~ Propc t flanaccr DATE: _2 -/ - 7/7 j STATUS CODE ( l l

%:' C2.~;:x:sn*CX ?MM -

f.M. XTwi.>Eoy l L. C. Rogers - MET. ED. I 1

F. R. Faist - TOLEDO i J. R. Bohart - Intl. Support J. . L. Donnell - 0FR 1 1

B. A. Karrasch - Plant Integration 1

Attached is one copy of' Site Prob 1cm Report No. _ /// which was processed

. on Contract 620-00 06 . Future contracts have been reviewed for the potential of a similar prob 1cm. This problera is/is not considered appJiegbJ e to j other contracts _.

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REMARKS:

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At15 b HUCLEAR SERVICE SUPPORT EtiGIllEER i

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DA11 Dec.10. C o b 1. 8 0. SPR No. F t . h o.

j Jerney Central LMw,$$).

De i ci s ? In. { 12/8/77 13 O m tcci 161 0 PIE.70 pax! P0 [lAL/ 60. CHOLP NO. Liv,. LU.

.. VENDOR Allin-Chalmerc 4 2. 33 O'l PRODLfH CONIACT // .

TITLE (HA/. 30 CH!PACTEES) prF...' .1A ic1.7..ew.<< . T L a. W. .r."un a~..n 'l. D. Ccrbin. -

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DESCRIPil0h Of P ;i O B L E H :

During UT innpectiona of the 1A flywheel, an inspection cover bolt vac inadvertently trapped between the flywheel and the chroud coverind the flywheel. This prevented rotation of the chaft.

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I di o-S T A T U S - t.C i l o ti 10 DATE. INCLUDidG PEES 0N5 C0hTACTED:

a Contacted R. Williascon, J. Thornhill, and Allic-Chalnern. The backntop han been disconnected and the flywheel was rotated backward in order to retrieve the bolt.

The specific location where the belt lays on the flywheel ic being thorcuchly UT'd to diccover any poccible da.r.ac.e. The r.otor har been put back in operatinc

_anler. Th e r e V3r C._n2_.J.U'_.iu2*mr.;'A nn n Y" null 01 Ml1IL- tri>

FURTHER ACTION PLCOHHENDED SY Stif PERS0rNEL:

Engineering evaluation of ar.y further incpections required.

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RESOLVil0N:

SEE A TTA C H.~D COPY OF SPR (PG. 2 oF G Fo I: 12Eso t u rtoo gy .f. 6 . T'14012 N 4 t L C. l3. DCM PSEY.

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PRIPARED BY / DATE APPROYED BY DATE a.UYg!U.A.htAbts

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COSI CA1EGORf Fl[tD CHANGE REQ f.C.A. NO.

S I C'N i f . DElICllNCY ONORH OTHfR C CYES NO [g o.4 94 g yl S ho (g Si1E C0HPLE110N FLPORT: DEilAl10NS:

? . '." ' O NONE SP R k I V N O. [~]

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Jeracy Central 1.M/:,; . .{./ M2f8/T7 13 - C20-oc06 161 0 l y[nooi P.v. no. em c0Tli^st no. a oue 80. 54 nu.

Allin.Cha]nerc 4 "?. 33 CPI

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PROCLLH C01114C1 i

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I DESCRIPil0H Of PROBLEM:

During UT incpections of the 1A flywheel, an incpection cover bolt van  !

inadvertently trapped between the flyvhec1 and the chroud covering the i flywheel. Thic prevented rotatien of the chaft. l p

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STAlV$-AC110H 10 DATE, lHCLUDitiG PERSOMS C0)(TACTED: .I E

l r"- Contacted R. Williamson, J. Thornhill, and A111c-Chair.cro. The backstop han been disconnected and the flywhccl was rotated bachvard in order to retrieve the bolt.  !

, The specific location where the bolt lays on the f.lywheel ic being thorouChly  !

UT'd to discover any possibic damage. The motor han been put back in operating I

.ordcr. Titero vqr.c_na. UT 4 a . r "~ ~ a "anu.1 t 0 f' t hir.-ird -

( U f T il E R AC110N RE C0HiliND EO SY Si1E PERSONNEL:

Engineering evaluation of any further inspections required.

z RESoLU11OH:

Our interpretation of the statement "no UT instances" is that there are "no reportable UT indications". We have also been informed verba.11y that there are no visibic marks on the flywhcc1 caused by the trapped bolt.

We see no need for any further inspection of the subject flyuheel.

APPROVED BY DATE

f 0 BY ////r D A T E

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COSI CAllCORY flELD CllANGE REQ f.C.A. NO.

SIGNif. OlfICIIECY O ttoni diner O OYtS N0 0 09- OYtS

• LJ SilE COMPLC110N REPORT: O!VIAll0NS:

O NONE SPR f.IV KO. O r.

DAll COMPLLl[0:

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E0HPLE1ED By DATE w

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