ML20028G609

LER 83-001/03L-0:on 830106,during Mode 1,control Room Emergency Air Conditioner 2VE-1B Failed Surveillance Test Due to Excessive Compressor Cycling.Caused by Low Freon Due to Leak on Discharge Relief Valves.Valve Will Be Replaced

ML20028G609
Person / Time
Site:	Arkansas Nuclear
Issue date:	02/01/1983
From:	Rogers P ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20028G607	List: ML20028G606 ML20028G609
References
LER-83-001-03L-01, LER-83-1-3L-1, NUDOCS 8302170136
Download: ML20028G609 (2)

Text

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NRC FORM 366 (7-77) b U.S. NUCLEAR REGULATORY CCMMISSION LICENSEE EVENT REPORT EXHIBIT A CONTROL BLOCK: 1 l_l_l_i_l_l_11 (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 6 IT lA R I A l N I O I 2 12 l010 - 1 0 1 0 1 0 1 0 l 0 l - l 0 1 0 13 l 4 l 1 1 1 1 1 1 1 14 l l l5 7 ~ I ~T 8 l9 l ITCEsSEE C05E-1F ~ 14

--~1 LICENSE T MBER -" -~ 75 2 I ITCEs5I T W E--30 57 CA H 8 l0 REPORT l L l0 - 0l0l013 6 7~-~1 ~1 8 1 SOURCE 6D-6I~1 l6 5 1~66CIET EuT4BTl--l 1183 3 19 68 698 17 l 0 i 1 1DXTE 7 VENT 0 l 6 I~ 8 !~~3 74 7F18 10l210l -

REPORT DAT I ~ 50 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES 10 l111l lOn 1/6/83 while in Mode 1 at 100% full power, control room emeroency air conditioner 2VE-1B failed its l l_T__ill (surveillance test because the compressor was cycling excessively. Redundant air conditioner 2VE-1A was t l1111 lavailab;e and operable. 2VE-1B was returned to operable status within the time requirements of Technical l l_Till ISpecification 3.7.6.1. This occurrence is reportable per Technical Specification 6.9.1.9.b. Other failures l l1111 f relating to the control room emergency air c.onditioners were reported in LER's82-050, 81-040,81-007, 80-092, [

l1111 180-070,80-054, 80-026,79-026, 79-053 and 79-050.

I l l 7_.0._ i8_8._ 9 l 1

80 SYSTEM CAUSE CAUSE COMP VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE ITill l_S_I G 111 l E 112 l B_l13 l_H_l T l E l1l C l H l14 l C l15 l Z l16 7 8 9 10 11 12 13 18 19 20

- SEQUENTIAL OCCURRENCE REPORT REVISION LER/R0 l EVENT YEAR REPORT NO. CODE TYPE NO 17 REPORT Ii813I l---l 1 0 l ~0 l 1 l l/l l0l 3l lLl l---l l 01 NUMBER l_21 22 23 24 --26 2F 28 29 3D-~ 31~ 32~

ACTION FUTURE EFFECT SHUTDOWN ATTACHMENT NPRD-4 PRIME COMP. COMPONENT TMEN ACTION ON PLANT METHOD HOURS SUBMITTED FORM SUB SUPPLIER MANUFACTURER l X_l18 l 1 119 I Z l20 I Z 121 l_0_f 0 1 0 1 0 122 l Y_l23 l A l25 33 34 35 36 37 40 41_

1 1 124 42 43 l C_l_7_I l l l l26 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS 27 lllT) ]The cause of the occurrence was low freon which resulted from a leak on the discharqe relief valves. It could l 1111l jnot be determined which relief valve was leaking because of the design of the discharge piping. A modificationt l1111 ito facilitate relief valve leakage identification is being considered. Spare relief valves were not available.1 11l11 IThe air conditioning unit '2VE-18) was recharged, tested and returned to service. The leaking relief valve l 11l_Tl8 7 9 lwill be replaced when spare valves are received. In the interim 2VE-1B will be checked weekly to (continued) l FACILITY 80 METHOD OF STATUS  % POWER OTHER STATUS DISCOVERY DISCOVERY DESCRIPTION l_1_lil8 9 ! E l29 l 1 1 0 1 1 129 i 7

NA 130 l B_131 i

_ Routine Surveillance 132 10 12 13 44 45 46 80 ACTIVITY CONTENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE l_1._l i l l_Z_l33 l 1 134 i NA 135 l NA 136 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMdER TYPE DESCRIPTION l _1_ i _1,l l 0 1 0 1 0 137 l Z_l38 i NA 7 8 9 11 (39 12_ 13 80 PERSONNEL INJURIES NUMBER DESCRIPTION l _1._ l _8_ l l_0._[ 1 1 1 140 i NA l41 7 8 9 11 12 e0 LOSS OF OR DAMAGE TO FACILITY -

TYPE DESCRIPTION l_1_Ill 11142i NA

~ ']4J - 6 PUBLICITY

_ . _ _ ISSUED DESCRIPTION NRC USE ONLY l 2,_l,,ill l N,_l44 l NA 7 8 9 IU 145 l_l_I ,l_l_f_!_!_I_l_i_l_I

, ud 69 60 NAME OF PREPARER Patrick Rnners PHCNE: (501) 964-3100 8302170136 830201 PDR ADOCK 05000368 S PDR

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l Page 1 of 1 LER No. 50-368/83-001/03L-0 Cause Description and Corrective Actions (Continued):

verify proper charge until repairs can be made.

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