ML19257B396

LER 79-076/03L-0:on 791210,salt Water Loop 11 Removed from Svc to Perform Maint on ECCS Pump Room Air Cooler Relief Valve.Spring Found Severly Corroded.Cause Not Stated.Line Plugged.Vendor Being Contacted Re More Suitable Spring Matl

ML19257B396
Person / Time
Site:	Calvert Cliffs
Issue date:	01/08/1980
From:	Heibel R, Pence W BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19257B392	List: ML19257B391 ML19257B396
References
LER-79-076-03L, LER-79-76-3L, NUDOCS 8001150658
Download: ML19257B396 (2)

Text

NRC FORM 366 w. a. .= ww 6 s,.n n s uw i.e. e u n a wwe . .w..

(7 77)

• LICENSEE EVENT REPORT CONTROL B LOCK: l tPLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 l l l l lh 6

7 0 3 8 9 lMlDlClClNl1l@l 0l 0l LICENSEE CODE 14 15

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68 con'T l 0 l 719 74l@ 750 il REPORT 10 l DATE 818 080l@

7 o 1 8

S$$lLl@l0 60 61 5 l 0 l 0 l 0 l 3 l 1 l 768 l@l69 1 1211 DOCKET NUMBER EVENT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h o  : 1 To perfonn maintenance on #11 ECCS Pumo Room Air Cooler's Relief valve I o a 1 it was necessarv to remove #11 Salt Water looo from service. The sal t- I o 4 water header was out of service from 1310 on 12/10/79, until 1820 on 12/11/79, 1 F5 s I whereucon the relief valve union was reoaired. (T.S. 3.7.5.1). This is n')t l o 6 1 a repetitive occurrence. I o 7 l l o e I l 80 7 8 9 C CODE SU8CO E COMPONENT CODE SU8 CODE S' E 7

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9 10 11 12 13 18 19 Xl@ W @ 20

_ SEQUENTI AL OCCU A AENCE REPORT REVISION EVENT YEAR REPORT NO. CODE TYPE N

@lLER/RO g l217 2219 l l-l l0 l716 24 26 l/l 27 l013l lLl 30

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_ 23 23 29 TK N A ON O PLANT MET HOURS S8 t FOR 8. SU LIER M ANUF A RER 33 Xl@lAl@ 34 l35 Zl@ [Z @

36 l 0l 0l 0l 0 37 40 lY [g l Ylg 41 43 Zlg lTl0l9l5lg 44 47 42 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS i o i Valve was removed and disassenbled. The sorino was found to be severely corroded. l i i The line was plugged with a 3/4" brass pipe plug and the system returned t'o I i,2 Iservice. Vendor is beino contacted to find a more suitable sorino material. I i 3 l Sorino will be reolaced and valve reinstalled when this infortnation is available. I i 4 I I 7 8 9 80 ST S  % POWER OTHER STATUS DISCO RY DISCOVERY DESCRIPTION i s W@l '0 7l 0l@ln i2 NA 44 l l Al@l Operator Observation 45 46 80 l

A!TiviTY cOATENT RE' LEASED OF RELEASE AMOUNT OF ACTIVIT LOCATION OF RELEASE -

1 6 l 2l h,l 10Z l@l NA l 45 NA 80 l

7 8 9 11 44 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION -

. 7 10 Ol Ol@l Zl@l NA l PERSONNE L INJURIES

~UM8ER oESCR,P

.O~8 1g47, 022 i NA 7

a 8 9 10101 Ol@l12 11 80 l

LOSS OF OR DAMACE TO FACILITY -

TYPE OESCRIPTION

' I 7

9 8 9 L1J@l10 NA 30 7 a j'" ' '"'"' "

NA 8001150 i ; i i i ; lj 7 8 9 10 68 69 80 ;

NAME oF PREPARER R P- N9ibEl/N N PA"en PHON E.. ( 301 ) 234-7955 /7007 {

LER NO. 79-76/3L DOCKET NO. 50-317 EVENT DATE 12/10/79 REPORT DATE 01/08/80 ATTACHMENT CAUSE DESCRIPTION AND CORRECTIVE ACTIONS: (CONTINUED)

Investigation is being conducted to locate other relief valves which may need spring replacsnent in salt water system.

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