View source for 05000327/LER-1980-007-01, Engineering Found That Incorrect Valve Operator Weights Were Used for Seismic Analysis of Component Cooling Water Sys Valves.Caused by Incorrect Weights Shown on Drawings

{{Adams
| number = ML19340B253
| issue date = 10/14/1980
| title = Engineering Found That Incorrect Valve Operator Weights Were Used for Seismic Analysis of Component Cooling Water Sys Valves.Caused by Incorrect Weights Shown on Drawings
| author name = Cottle W, Kirk G
| author affiliation = TENNESSEE VALLEY AUTHORITY
| addressee name = 
| addressee affiliation = NRC OFFICE OF INSPECTION &amp; ENFORCEMENT (IE REGION II)
| docket = 05000327
| license number = 
| contact person = 
| document report number = LER-80-007-01X, LER-80-7-1X, NUDOCS 8010210703
| package number = ML19340B248
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 2
}}
{{LER
| Title = Engineering Found That Incorrect Valve Operator Weights Were Used for Seismic Analysis of Component Cooling Water Sys Valves.Caused by Incorrect Weights Shown on Drawings
| Plant = 
| Reporting criterion = 
| Power level = 
| Mode = 
| Docket = 05000327
| LER year = 1980
| LER number = 7
| LER revision = 1
| Event date = 
| Report date = 
| ENS = 
| abstract = 
}}

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.I o i:l l With Unit 1 in Mode 6 following initial core loading, notification was received ggl from TVA Division of Engineering Design that incorrect (non-conservative) valve 1o,A t{ operator weights were used in the seismic analysis for component cooling water [ol3; j valves FCV-70-133,'134, and 183 (T.S.6.9.1.12.h).
There was no effect upon public jc sjl health or safety. Previous occurrences - none.
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i o i l The Walworih Cocoany (valve =anu.)' shows different valve operator ::Ei'ghts on different j i i''ii I drawines for identical valves. TVA Division of Engineering Design used 116 lbs. for
;i,7; } FCV-133, 134, and 183 in their piping seismic analysis. The seismic analysis has
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Tennessee Valley Authority Sequoyah Nuclear Plant LER SUPPLEMENTAL INFORMATION UPDATED REPORT - PREVIOUS REPORT DAT; 3-28-80 SQRO-50-327/80007 Rev. 2 Technical Specification Involved 6.9.1.12.h Reported Under Technical Specification 6.9.1.12.h Date of Occurrence:
3/15/80 Time of Occurrence: 0900 EST Unit 1 Identification and Description of Occurrence:
Notification was received frem TVA Division of Engineering Design that
)
incorrect (non-conservative) valve operator weights were used in the seismic analysis for component cooling water valves FCV-70-133,134, and 183.
Conditions Prior to Occurrence:
Unit 1 in Mode 6 following init'ial core loading.
Action specified in the Technical Specification Surveillance Requirements =et h
due to inocerable eaufreent. Describe.
j ii/A fpparent Cause of Occurrence:
Iacorrect valve operator weight used in seismic analysis due to error on vax e vendor drawings.
Analysis of Occurrence:
There was no effect upon public health or safety.
Corrective Astion:
The seismic ana.ysis was rerun using the correct valve op-rator weights.
No physical changes were required.
Failure Data:
N/A
}}

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