ML19345A515

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RO 50-29/75-13:on 751121,accumulator Pilot Operated Relief Solenoid Valve Failed to Open During Functional Test.Caused by Opening in Holding Coil on Valve.Solenoid Replaced
ML19345A515
Person / Time
Site: Yankee Rowe
Issue date: 12/21/1975
From: Janet Staub
YANKEE ATOMIC ELECTRIC CO.
To:
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19345A514 List:
References
RO-50-29-75-13, NUDOCS 8011240097
Download: ML19345A515 (2)


Text

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UCENSEE EVENT REPORT.

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@ ly l gly l v l pl 1l l 0l 01-10 l 0 l 01 Ol' 0l-l 0l0 l l 4 l 1 l111 l 1l l Ol 11 7 89 14 15 25 26 30 31 32 Tfp ukN 00CKET NUueEA EVENT DATE REPORT DATE CATEGORY O 1 con'T l l

l M l Ll l 0l510 l-l0 l0 l 219l l1 l1 l2 l1 l 715 l l1 l 212 l1 l 7 l 5 l 7 8 57 58 59 60 61 68 69 74 75 SO EVENT DESCA:PTION l During normal refueling operations a functional test performed on the Safety Injectlyj Oa 7 89 80 a a l Accumulator Level Switches revealed that an accumulator pilot operated relief l

7 89 80 EE I solenoid valve failed to open when recuired during the test.

This constitutes a l

7 89 80 05 l violation of Technical Specification Section E.2.b.1 and is reported as Reportable

-l 7 89 80 06 I Occurrence No. 53-29/75-13.

I 80 7 89 pave

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CCOE CCVPONENT CODE VOLATION g lSl Fl y lV l Al Ll VI Ol Pl lLl lAl5l3l5l lYl 7 89 10

'.1 12 17 43 44 47 48 CAUSE DESCRIPTION l The failure of the Atkomatic Valve Co., Inc.,1/4 in., 500 psid., 3000 psi, No. 31800 l ae 7 89 80 l solenoid operated valve was caused by an ooen in the 125 VDC holding c' oil, No.13177, l 09 7 89 80 1

I nn the valvo.

Tha redundant solennid valve was tasted satisfartnrilv

'the failad l

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s *:/.E A OTHEA STATUS 50O EAY Of5COVEAY DESCAipfCN

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7 8 9

10 12 13 44 45 46 80 EES CF E SE AVOUNT OF ACitytTV LOCATON OF RELEASE y

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12 7 8 9

10 11 44 45 80 PERSONNEL EXPOSUPES NuveEA Tv 5E CES:A;ctCN gl 0 i 0l l Zl l

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i 7 89 11 12 13 80 PERSONNEL INJUA'ES NUVBEA CES:s DT N M [ 01010 I I

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80 7 89 11 12 OFFSITE CONSEQUENCES DE l NA l

80 7 89 LOSS OR DAMAGE TO FA0fLITY

.* P E DESCA5fCN 8 LzJ l

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80 7 89 10 r

PUBLICITY 1

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60 7 89 ADDITICNAL FACTCAS 3 l Cause DescriOtion (cont'd):

solenoid was replaced in kind and tested satisfactorily. l 63 7 89 1

80119an8 7 1

1 CO

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7 89 J. L. Staub 413-625-5140 l

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NRCh'9TRIBUTION FOR PART 50 DOCl%~ MATERI AL J

E (TEMPOR ARY FORM)

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CONTROL NO:

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FILE: It: CIDE!C REPORT [

FRO'd: Yankee Atomic Elec. Co.

DATE OF DOC D ATE R EC'D LTR TWX RPT OTHER Rowe, Mass.

H.A. Autio 12-19-75 12-24-75 yyy

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TO.

ORIG CC OTHER SENT AECPDR J.P.0'Reilly Non$

40 SENT LOCAL PDR CLASS UNCLASS PROPINFO INPUT NO CYS REC'D DOCKET NO:

XXX 40 50-29 DESCRIPTION:

ENCLOSURES:

Letter trans the following.......

Licensee Event Repo -t ! 75-13, on 11-21-75, Concerning an accumula' tor pilot operated relief va.)ve failing to open..'.....

(40 Cys. R.eceivdd).

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