05000366/LER-1980-136-01, /01T-0:on 800930,Bechtel Notified Util That Psw Div I Line Was Inadequately Supported When Subjected to OBE or DBE Loads.Caused by Failure to Install 3-directional Support.Support Installed

/01T-0:on 800930,Bechtel Notified Util That Psw Div I Line Was Inadequately Supported When Subjected to OBE or DBE Loads.Caused by Failure to Install 3-directional Support.Support Installed

ML19336A330
Person / Time
Site:	Hatch
Issue date:	10/14/1980
From:	Coggin C GEORGIA POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19336A329	List: 05000366/LER-1980-136, Forwards LER 80-136/01T-0 05000366/LER-1980-136-01, /01T-0:on 800930,Bechtel Notified Util That Psw Div I Line Was Inadequately Supported When Subjected to OBE or DBE Loads.Caused by Failure to Install 3-directional Support.Support Installed
References
LER-80-136-01T, LER-80-136-1T, NUDOCS 8010220496
Download: ML19336A330 (2)

LER-1980-136, /01T-0:on 800930,Bechtel Notified Util That Psw Div I Line Was Inadequately Supported When Subjected to OBE or DBE Loads.Caused by Failure to Install 3-directional Support.Support Installed

Event date:
Report date:
3661980136R01 - NRC Website

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60 61 DOCKET NUMBER 6d 69 EVENT DATE 14 75 REPORT DATE B0 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h 10121 l During routine SU activities the site was notified of a seismic PSW I

lo131Idiv. I line that was inadequately suoported when subjected to 0BE or i

laicilDBE loads.

Assuming catastrophic failure of the subject piping, the I

lo isi i cooling water should be severely compromised, thereby, rendering the I

o e Iassociated equipment (area coolers for RCIC, RHR, CS, jockey pumps and,,j 10171 l DWL chillers) inoperable during a seismic event.

This is a repetitive I

10181ievent as last reported on LER 50-366/1980-100.

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33 34 35 36 31 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h lilOi l The cause of this event was due to the failure to insta'l a 3-direction-1 [TTr1 I al support on the div. I PSW piping.

Upon notification of this f act I

lby the AE action was immediately taken to install the support.

This i

i, i7i y l event does not have generic implication as Units 1 and 2 are not I

m Irouted in a similar manner.

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C. L. CoGQin. Suot. Plt. Eno. Serv.

P,,oN e Ni,*1E OF PHEPAf tEH

l LER #:

50-366/1980-136 Licensee:

Georgia Power Company Facility Name:

Edwin I.

Hatch Docket #:

50-366

Narrative

Report for LER 50-366/1980-136 i

During routine startup activities, the site was notified by the AE (Bechtel) of a

PSW division I

line that was inadequately supported when subjected to OBE or DBE loads.

l This deficiency revealed piping seismic stresses that exceed l

code allowables and,was, discovered during a

review of l

"as-built" piping data acquired in response to IEB 79-14.

The cause of this high stress condition was due to the f ailure-to install a

3-directional support on the piping.

Assuming catastrophic failure of the subject piping, the cooling water.

(PSW div. I) would be severely compromised thereby renderng

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the associated components (area coolers for RCIC,

RHR, CA, L'

jockey pumps and. DWL chillers) inoperable during a -seismic event.

Due to this ' fact, Rx startup activities were suspended, and the unit was _ considered in a

12-hour LCO per Tech Specs section

3. 5.

Upon notification by the AE efforts were begun-immediately to implement the design change necessary to resolve the condition.

This change was satisfactorily implemented within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.

Similar-PSW piping (div. II) was available-and operable to equipment redundant to the l

inoperable equipment.

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