05000317/LER-1980-026-01, /01T-0:on 800520,while in Hot Standby,Realignment of Condensate Storage Tank Header Supply Valves Resulted in Isolation of Water Supply to Auxiliary Feedwater Pumps. Caused by Error of Transposed Valve Numbers in Log

/01T-0:on 800520,while in Hot Standby,Realignment of Condensate Storage Tank Header Supply Valves Resulted in Isolation of Water Supply to Auxiliary Feedwater Pumps. Caused by Error of Transposed Valve Numbers in Log

ML19323G994
Person / Time
Site:	Calvert Cliffs
Issue date:	06/03/1980
From:	Denton R BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19323G993	List: 05000317/LER-1980-026, Forwards LER 80-026/01T-0 05000317/LER-1980-026-01, /01T-0:on 800520,while in Hot Standby,Realignment of Condensate Storage Tank Header Supply Valves Resulted in Isolation of Water Supply to Auxiliary Feedwater Pumps. Caused by Error of Transposed Valve Numbers in Log
References
LER-80-026-01T, LER-80-26-1T, NUDOCS 8006090368
Download: ML19323G994 (3)

LER-1980-026, /01T-0:on 800520,while in Hot Standby,Realignment of Condensate Storage Tank Header Supply Valves Resulted in Isolation of Water Supply to Auxiliary Feedwater Pumps. Caused by Error of Transposed Valve Numbers in Log

Event date:
Report date:
3171980026R01 - NRC Website

text

{{#Wiki_filter:W776 O,a LICENSEE EVENT REPORT CONT 7;OL SLOCK: [ l l l l l lh (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 6 10 l1I IM I D ! C IC lN I1 j@l0 lo I 10 lo lo lo lo l lo in J@l4 l1 11 11 l1 l@l 7 8 9 LICENSEE CODE 14 15 l l 67 CAT 68 @ LICENSE Nt.W8ER 25 26 LICENSE TYPE JO CON'T 10I$1 Z "C l L j@l 0 15 l 0 10 10 13 11 (7 l@l0 15 12 10 18 10 l@l0 16 10 13 18 7 8 60 61 CaOCK ET NVYSE R 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION ANO PROBASLE CONSEQUENCES h t o ! 21 [WHILE IN HOT STANDBY. REALIGNMENT OF THE CONDENSATE I ~ IHEADER SUPPLY VALVES RESULTED IN THE ISOLATION OF THE lo 63 i l AUXILIARY FEEDWATER PUMPS, THEREBY VIOLATING THE PROVISIONS 10141 1 i to is] I SPECIFICATION 3.7.1.2. THE STEAM GENERATOR FEED PUMPS REMAINED OPERABLE, I [5" O [AND WERE BEING UTILIZED TO REMOVE DECAY HEAT. LER 50-317/75-58 (U-I) 1 I o ! 71 lDESCRIBES A SIMILAR OCCURRENCE. I PInn 1 7 8, C 80 CODE SUSC E lo19J COMPONENT CODE (C lH 16 LAJ@ LA_j@ LV l A l L l V I E l X l@ V8COC'El Z l @ LF,_J @ s SU E 7 6 9 10 tt 12 13 18 19 20 LE a 8 EVENT YEAR @ sg"0 l8101 L--J t012161 1-1 10111 LIJ L---J Lo.J REPORT O a CODE N, 21 22 3 24 26 27 28 29 30 31 32 AKEN A ON ON PLA T ME Inl@LGJ@ LIJ@ Iz_J@ l0101010i L.y_J @ L_id@ LLj@ l 7 I o I o I o l@~ HOURS S8 1 0 FOR 8. SUP 1 R MANUFACTURER 3J 34 35 36 3' CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h 40 41 42 43 44 (1 47 6 01 lAN ERROR IN TRANSPOSING VALVF UUMRFRS INTO TMF 10rvF0 Val vp DEV l riTr1 [RESULTED IN THE INCORRECT RFALIGNMENT OF THE SYSTEM. A CHFCVI79T MAR Retn I A 1 DDED TO THE PROCEDURE TO REQUIRE TWO INDEPENDEN l iii2; il # 2 i I I 1i t 41 1 = 7 8 9 ST S % POWER OTHER STATUS Ii is 1 La_J@ l 01010J@l is O Ry DISCO % ?RY DESCRIPTION nA I LaJ@l OPERATOR OBSERVATION '. 'T,v, Tv CORTENT j '5 mELEASED OF AELEASE AMOUNT OF ACTIVITY it i s ] l Z l @ L.Z_J@l LOCATION OF RELEASE NA l l NA 1 ,EasON~EL Ex,0sSEs l 5 eEsCRin,0~ @ NumER TY,E i I 7! 1010 !O J@Llj@l NA u l ,EasONNELmu'!,Es oEsCRirTiON@ nuv8ER lal101010j@l i NA 8 9 11 12 I Tv Z SC PT ON 80 t j ij LLJ@l NA a 9 10 I "s"Cai, TION @ .ssuE oE E.L_l IN U@l 80 NRC USE ONLY "^ 6 9 10 I IIIIIIIIIIIII I --68 69 NAVE OF PREPARER R. E. DENTON 80 3 PsONg:_f 301 W0-4724 {

LER NO. 80-26/1T DOCKET NO. 50-317 EVENT DATE 0S/20/80 REPORT DATE 06/03/80 ATTACHMENT EVENT DESCRIPTION AND PROBABLE CONSEOUENCES: \\ ON MAY 20, 1980, DUE TO A DEGRADATION OF THE SERVICE WATER SYST TANK (CST) WAS ALIGNED TO THE SUCTION.0F .11 CONDENSATE STORAGE ~ (AFP) AND THE UNIT 1 SUPPLY VALVE FROM NO.12 m( MPS ~ ~ WERE TAKEN AT APPROXIMATELY 8:30 P.M. = THESE ACTIONS-10:00 P.M., THE CST'S WERE REALIGNED TO THEIR NORMAL C REPORTED TO THE SENIOR CONTROL ROO g WHILE T RATOR +'1 ~ PRESSURE FOR THE UNIT 1 AUXILIARY FEED PUM INDICATING THAT THE SUCTION SIDE VALVE LINE-UP N~~@ DIRECTED THE OUTSIDE OPEPATOR (0S0). TO C O THE SCR0 AFP SUCTION; APPARENTLY THE DIRECTIONS GIVEN TO TH .i HE J :2 INCORRECT AND HAD RESULTED IN THE TOTA .. WERE N' FROM THE UNIT 1 AFP'S. BOTH STEAM GENERATOR FEED PUMPS REMA _CAUSE DESCRIPTION NID CORRECTIVE ACTIONS: THE PRECISE SEQUENCE OF EVENTS WHICH APP UP IS AS FOLLOWS: LINE-1. FOLLOWING THE PLANT TP.IP, THE AFP'S WERE USED TO RE STEAM GENERATOR LEVELS; DUE TO THE REQUIREMENT T A MINIMUM LEVEL IN NO. 12 CST. THE AFP SUCT TO NO.11 CST AT APPR0XIMATELY 8:30 P.M. 2. AT APPR0XIMATELY 9:30 P.M., A STEAM GE SHUTDOWN. 3. AT APPR0XIMATELY 10:00 P.M. THE UNIT 1 CON (CRO) DIRECTED A CHANGE IN VALVE LINE-UP TO ?N CST AS THE SUPPLY TO THE UNIT 1 AFP'S.. 12 INCORRECTLY DESIGNATED THE VALVES TO BE OPERATED.IN DOIN

- d TO THE 050 WERE GIVEN BY VALVE NUMBER AND R d~

TION FOR 1-AFW-167 AND l-AFW-161 (SEE dE 050 FACT THAT THE VALVE DESCRIPT THIS WERE REVERSED. THE REVERSAL CAUSED 1-AFW-161 TO BE SHUT AND 1-AFW-167 TO BE OPENED, INSTEAD OF THE CORRECT ~= WHICH WOULD HAVE 1-AFH-161 OPEN AND 1-AFW-167 V-AS STATED PREVIOUSLY, THIS ERROR WAS CORRECTED IMM DURING THE 1:00 A. M. ROUNDS. TIME THE VALVES WERE MISALIGNED.THE PLANT REMAINED IN H0DE 3 ERY ~ ~ ~ ~ ' ~ ~ ~~ ~ ~ ~ 1

LER 80-26/1T. June 3, 1980J za .:==K -{ A CHECKLIST HAS BEEN INSTITUTED UHICH REQUIRES VERIFIC .m ~ ~ * ' 'd OPERATOR CONDUCTING THE VALVE ALIGilMENT AND BY THE SCR0 THAT THE VALVES .iw PE0VIRED TO SHIFT AFP SUCTIONS ARE PROPERLY ALIGNED T WHENEVER REALIGNMENTS ARE MADE. ?" ~- M ADDITIONALLY, AFTER EACH REALIGNMENT, THE SUCTION PRESSURE FOR THE AFP'S WILL BE READ AND N - - 47 LIST TO ENSURE THE AVAILABILITY OF A WATER SUPPLY TO THE A in PLANT OPERATORS HAVE BEEN CAUTIONED THAT VALVES WHICH A ALL ALREADY BE IN THE POSITION TO WHICH THEY ARE DIRECTED T 3 2-SHALL BE REPORTED TO THE CONTROL ROOM PRIOR TO ANY REAL ~~~-- ". "-y

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