05000327/LER-1980-045, Supplemental LER 80-045/01T-1:on 800509,gate Between Spent Fuel Pool & Cask Loading Area Found Not to Be Designed or Constructed to Category 1 Requirements.Caused by Overlooking Loading Effects in Seismic Analysis

Supplemental LER 80-045/01T-1:on 800509,gate Between Spent Fuel Pool & Cask Loading Area Found Not to Be Designed or Constructed to Category 1 Requirements.Caused by Overlooking Loading Effects in Seismic Analysis

ML19318A930
Person / Time
Site:	Sequoyah
Issue date:	06/18/1980
From:	Maehr S TENNESSEE VALLEY AUTHORITY
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19318A925	List: 05000327/LER-1980-045, Supplemental LER 80-045/01T-1:on 800509,gate Between Spent Fuel Pool & Cask Loading Area Found Not to Be Designed or Constructed to Category 1 Requirements.Caused by Overlooking Loading Effects in Seismic Analysis
References
LER-80-045-01T, LER-80-45-1T, NUDOCS 8006240396
Download: ML19318A930 (2)

LER-1980-045, Supplemental LER 80-045/01T-1:on 800509,gate Between Spent Fuel Pool & Cask Loading Area Found Not to Be Designed or Constructed to Category 1 Requirements.Caused by Overlooking Loading Effects in Seismic Analysis

Event date:
Report date:
3271980045R00 - NRC Website

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g.. no T:nnegoce Valley Authcrity Sequoynh Nuclear Plant LER SUPPLEN.NTAL INFORMATION SQRO-50-327/ 8045 Technical Specification Insolved 6.'9.1. 12.1

' Reported Under Technical Specification 6.9.1.12.1 Date.of Occurrence: ~5/9/80 Time of occurrence:

1745 CDST Unit 1 Tdentificatien and Dencription of Occurrence The gate between the spent fuel pool and the cask leading area is not destgr.ed or constructed to selsnic category I requirceents as' required by Reg. Cuide

- 1.13.

Analysis shews that under seismic loading this gate could fail if water was present on both sides of the gate.

Conditions Prior to Occurrence 0

Unit 1 in Mode 4 below 350 F during system heatur.

Acticn specified in the Technical Specification Surveillance Requirementa due to inoperable equipment.

N /..

Apparent Cause of Occurrenct Overlooked in the seismic analysis.

Analysie of Occurrence _

No danger to public health and safety.

Corrective Acti n t

The Mechanical Engineering Branch is in the process of a design modification to correct the deficiency.

raflure Data N/A lt 1

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