05000327/LER-1980-007-01, /01T-1:on 800315,in Mode 6 Following Initial Core Loading,Discovered Incorrect Valve Operator Weights Used in Seismic Analysis for Cooling Water Valves FCV-70-133,145 & 183.Caused by Manufacturer Labeling Error

/01T-1:on 800315,in Mode 6 Following Initial Core Loading,Discovered Incorrect Valve Operator Weights Used in Seismic Analysis for Cooling Water Valves FCV-70-133,145 & 183.Caused by Manufacturer Labeling Error

ML19323F823
Person / Time
Site:	Sequoyah
Issue date:	05/21/1980
From:	Terpstra G TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19323F818	List:
References
LER-80-007-01T, LER-80-7-1T, NUDOCS 8005290509
Download: ML19323F823 (2)

LER-1980-007, /01T-1:on 800315,in Mode 6 Following Initial Core Loading,Discovered Incorrect Valve Operator Weights Used in Seismic Analysis for Cooling Water Valves FCV-70-133,145 & 183.Caused by Manufacturer Labeling Error

Event date:
Report date:
3271980007R01 - NRC Website

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li i s i l The Walworth Company (valve manu.) shows different valve operator weights

'g Lor differeat drawings for identical valves. TVA Divisio t of Engineering i,i,il Design used 116 lbs. for 1 & 2-FCV-133,134, and 183 in their piping i,,,ii seismic analysis. The correct weights should be 135 lbs. The seismic g, analysis will be rerun using the' correct valve operator weights.

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T$nnacEmoValleyAuthority Siqunyth Nucitar Plant LER SUPPLDfE!;TM. INFORMATION SQRO-50-327/8007 Technical Specification Involved 6.9.1.12.h Reported Under Technical Specification 6.9.1.12.h Date of Occurrenec: 3/15/E0 Time of Occurrence:

0900 EST Unit 1 Identification and Description of Occurrence:

Notification was received from TVA Divisien of Engineering Design that the incorrect (non-censervative) valve operator weight was used in the seismic analysis for component cooling water valves FC'.'-70-133, 134, and 183.

Conditions Prior to Occurrence:

Unit 1 in Mode 6 following initial core leading.

Action specified in the Technical Specification Surveillance Requirements met due to inoperable eculpment.

Describe.

N/A Apparent Cauce of Occurrence:

Incorrect valve operator weight used in seismic analysis.

Analysis of Occurrence:

There was no hazard to the public health or safety.

Corrective Action

The ueismic analysis will be rerun using the correct valve operator weights.

Failure Data:

N/A