View source for 05000259/LER-1981-037-01, During Ultrasonic Testing,Indication Confirmed on Vessel Side of Reactor Water Cleanup Sys Inboard Primary Containment Isolation Valve. Cause Unknown.Gate Valve Replaced

{{Adams
| number = ML20010B917
| issue date = 08/11/1981
| title = During Ultrasonic Testing,Indication Confirmed on Vessel Side of Reactor Water Cleanup Sys Inboard Primary Containment Isolation Valve. Cause Unknown.Gate Valve Replaced
| author name = Holder G
| author affiliation = TENNESSEE VALLEY AUTHORITY
| addressee name = 
| addressee affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION II)
| docket = 05000259
| license number = 
| contact person = 
| document report number = LER-81-037-01X, LER-81-37-1X, NUDOCS 8108180477
| package number = ML20010B914
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 1
}}
{{LER
| Title = During Ultrasonic Testing,Indication Confirmed on Vessel Side of Reactor Water Cleanup Sys Inboard Primary Containment Isolation Valve. Cause Unknown.Gate Valve Replaced
| Plant = 
| Reporting criterion = 
| Power level = 
| Mode = 
| Docket = 05000259
| LER year = 1981
| LER number = 37
| LER revision = 1
| Event date = 
| Report date = 
| ENS = 
| abstract = 
}}

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UPDATE REMRT - PREVIOUS REPORT DATE 7 /1U/g 1EA3 KEGMATD COMISSION LICENSEE EVENT REPORT
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8 60 61 DOCK ET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 l
EVENT OESCRIPTION ANO PROBABLE CONSEQUENCES h Lo_RJ l Durine refueling outage, reactor water cleanup system inboard primary containment i
An indication was l o l 3 l l isolation valve 69-1 was ultrasonically inspected on 6/21/81.
I o I 41 I observed on the vessel side of the valve weld.
(T.S. 3.6.G)
A subsequent radio-l l o l <> l l graph showed no indications. On 6/24/81 a UT inspection by a level II inspector g
There was no danger to the health or safety of the public. g 1016 ] l confirmed an indication.
O 7 l Previous similar event: BFRO-50-259/80004.
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==CAUSE==
CAUSE COMP.
VALVE CODE CODE SUBCODE COMPONENT CODE SUBCODE SUBCODE E
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CODE TYPE No.
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J3 34 Jb 36 31 40 41 42 43 44 47 CAUSE DESCRIPTION ANO CORRECTIVE ACTIONS 21 The Velan Model 900 lb, 6 inch, SS stainless I n J o l l Cause is unknown at this time.
steel gate valve, rated at 1146 psi at 500 degrees fahrenheit (normal operating I
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,, l pressure 960 psi) was replaced. The indication is. acceptable under.the summer l 1978 Addenda to ASME Section XI Code. This c'oneidered a raedom event and no
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NAVE OF PREPAPER PHONE:
}}

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