ML18142B249

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LER 1976-024-00 for R. E. Ginna, Unit 1, Accumulation of Borated Water Near Valve in Safety Injection System Piping Between Boric Acid Tanks and Safety Injection Pumps
ML18142B249
Person / Time
Site: Ginna Constellation icon.png
Issue date: 10/22/1976
From: Curtis A, Platt C
Rochester Gas & Electric Corp
To:
Office of Nuclear Reactor Regulation
References
LER 1976-024-00
Download: ML18142B249 (6)


Text

LER 76-24/1T II LICENSEE EVENT REPOR CONTROL BLOCK: (PLMSE PRINT ALL REQUIRED INFORI'JPATIDN)

UCENSEE UCENSE EVENT NAME LICENSE NUMBER TYPE TYPE

~01 N Y R E G 1 0 0 0 0 0 0 0 0 0 4 1 1 1 1 ~01

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7 89 14 15 25 26 30 31 32 REPORT AEPOAT CATEGORY DOCKET NUMBER EVENT DATE AEPORT DATE

~01 CON'T 0 5 0 0 2 4 4 1 0 0 8 7 6 1 0'2 2 7 6 7 8 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION During normal operations an auxiliary operator found an accumulation of borated water 7 8 9 80 7

m89 near a valve in the Safety Injection System piping between the Boric Acid Tanks and 80 Safety Injection Pumps. Further investigation revealed a leak in a section of 8"

~I 7 8 9 m8 Schedule 10 stainless steel pipe between valves 826A and 826B. The PORC recommend-80 7 9 ed taking the unit to cold shutdown. Leaks were found (cont'd. on attached sheet) 80 tOpg 7 8 9 PA0ME 80 SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT CODE MANUFACTURER VIOIATION

~a~ ~SF Z I I I Z X X K 0 5 5 N 7 8 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION Qgg As a result of metallurgical analysis and metallographic examinations, chloride stress 7 8 9 80 Qpg corrosion cracking is believed to be the cause of the leaks. Since this investigation 7 8 9 is continuing, further information will be submitted in a supplemental report. 80

~10 7 8 9 80 FACIUTY METHOD OF OTHEA STATUS DISCOVERY DISCOVERY DESCRIPTION b By operator 7 8 9 10 12 13 44 45 46 80 FORM OF ACTIVITY COATENT RELEASED OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE Q~g ~S H NA NA 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES

~13 7 8 9 11 12 13 80 PERSONNEL INJURIES 7 8 9 11 12 80

'g 7 89 OFFSITE CONSEQUENCES NA LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION L See Event Description 7 89 10 80 PU8LICITY Press release on October 8, 1976 7 89 80 ADDITIONAL FACTORS NA 7 89 80 7 89 80

, NAME C. E. Platt A. E. Curtis, III PHDNEI 7 16/546-2700, ext. 29 1-250 cpa ee1- eev

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Licensee Event Report Reportable Occurrence 50-244/76-24 Event Descri tion (cont'd.)

in two sections of pipe, and liquid penetrant and ultrasonic examination of 75 welds and the piping associated with those welds revealed five other sections of pipe or fittings with indications. All seven of these components of the piping system containing leaks or indications were replaced.

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