05000255/LER-1978-034-01, /01T-0 on 781026:during Surveillance of safety- Related Shock Suppressors,Snubbers S5 & S28 Found Inoper. Caused by Oil Leakage Past Failed O-ring in Both Snubbers. O-ring Failure Due to Age & High Temp Conditions

/01T-0 on 781026:during Surveillance of safety- Related Shock Suppressors,Snubbers S5 & S28 Found Inoper. Caused by Oil Leakage Past Failed O-ring in Both Snubbers. O-ring Failure Due to Age & High Temp Conditions

ML18043A264
Person / Time
Site:	Palisades
Issue date:	11/09/1978
From:	CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.)
To:
Shared Package
ML18043A263	List: 05000255/LER-1978-034, Forwards LER 78-034/01T-0 05000255/LER-1978-034-01, /01T-0 on 781026:during Surveillance of safety- Related Shock Suppressors,Snubbers S5 & S28 Found Inoper. Caused by Oil Leakage Past Failed O-ring in Both Snubbers. O-ring Failure Due to Age & High Temp Conditions
References
LER-78-034-01T, LER-78-34-1T, NUDOCS 7811140228
Download: ML18043A264 (1)

LER-1978-034, /01T-0 on 781026:during Surveillance of safety- Related Shock Suppressors,Snubbers S5 & S28 Found Inoper. Caused by Oil Leakage Past Failed O-ring in Both Snubbers. O-ring Failure Due to Age & High Temp Conditions

Event date:
Report date:
2551978034R01 - NRC Website

text

PALISADES NRC FORM 366 (7-77)

U.S. NUCL'EAR REGULATORY COMMISSION LICENSEE EVENT REPORT CONTRO~ BLOCK: l l

J Q

~1~-'--~~'---'---"--'5

(?LEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

~

I Ml r I PI A I LI il@I o I ol I o I o I o Io I o I 7

B 9

LICENSEE CODE 1*

~5 LICENSE NUMBER Io I o 101 4 111 1 I 111 101 I 10

~S 26 LICENSE TYPE 30 57 CAT'SS CON'T w:TI 7

8

~~~~~~ Ll:....KVI o l 5 10 I b I o l 21 5 I 5 X2)1 11 01 2 I 611 I 8 l@L!J 11 o I 917 I 8 IG) 60 61 DOCKET NUMBER 68 69 EVElllT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES {iO)

(]J3].1 During routine s~rveillance o!-'sa£ety-related shock suppressors, snubbers1

[£]IJ 1 S5 and 828 (located on main steam and component cooling water lines)

[Q]I] I were found to be inoperable due to their oii levels being below the indicating range.

This condition exceeded the LCO of TS 3.20.

Snubbers

[))))

were re~laced with rebuilt snubbers.

Snubber 85 had already been fIID I replaced when snubb~r 828 was determined to be inoperable.

LER 77-27

[§))] I reported a similar occurrence, Event had no ~dverse ef~ect on public

~

7 8

7 8 9 health/s9§t.f~ty.

CODE ctou~;

s8:cugDEE COMP.

VALVE COMPONEN1' cgDE SUB CODE SUBCODE 1 s1 ~@ lEI@ ~@ s1u1P 1or 1T I@ LE.J@ ~@

9 10 11 12 13.

18 19.

20 C

SEQUENTIAL OCCURRENCE REPORT LE R/RO EVENT YEAR REPORT NO.

CODE J:YPE

~:~~

~

17 I ~J I I I o I 3 14 I I.....-I I o 11 J

~ I I 2J 24 26 27 28 29 30 31 REVISION*

~

LJ 32 I

eo

'ACTION FUTURE EFFECT SHUTDOWN r:;;;...

ATTACHMENT

. NPR~

TAKEN ACTION ON PLANT METHOD HOURS ~ SUBMITTED FORM ~UB P~L":.~El~~P.

W@lz I@ W@

~ I 01 g 01 01 L!J@

Ll~ ~fi"S\\

CCMPONENT

~ANUFACTURER 1.0 I 21i p I@)

33 34 35 36 37 40 42

~-

43

~

CAUSE DESCRIPTION AND CORREC'rlVE ACTIONS @

44 47 [IIIJ I Low oil levels were caused by oil leakage past a failed 0-ring in both IJJJJ srn1bbers.

• 0-ring failure has been attr.i buted to aging and high tempera-1 ITJ)) l ture service conditions.

o:m CITIJ '--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~_J 7

8 9

FACILITY 1'3()1 METHOD OF BO STATUS

% POWER I OTHER ST A TUS ~ DISC~ERY [D:TI l!J@ 111 o Io l@l N A I L:::J@I J

7 a AtTIVITY cd~TEN1' 12 13 44 45.

':"46------------------...........iso c~=:r:~:ftzAY@r f EzE1@1 N ixouNT OF ACTIVITY J Ni A LOCATION OF RELEASE*

1 a

s 10 11 45 so PERSONNEL EXPOSURES r-;;::.,

NUMBER A

TYPE

DESCRIPTION

~lololol0~--N~/_A _____________________

~

7 8

9 11 12 13 PERSONNEL-INJURIES

(;';\\

NUMBER DESCRIPTION0_Y 80

!2:li]IOIOIOJ@

N/A 7

8 9

.11 i:122 __________________________________ _j 80 LOSS OF OR DAMAGE TO FACILITY f'4:i\\

TY?!:

DESCRIPllON

\\'.:'..:::)

GTIJ I z I@

N;A 7

8 9

~10,--~~~-~~-----~~~-~--~~-~-~~~~~--~~--~-_J 80 PUBLICITY GI ISS)dEDQ DES"?t'.AON ~

NRC USE ONLY

~

µ:.J~~

10~"-

1-*~~~~~~~~~~~~~~~~~~~~~ I I I I I I I I I I I I I 68 69 80