ML19270G462

LER 79-024/01T-0 on 790517:support for Control Rod Drive Line Return Line Outside Containment Does Not Meet Seismic Requirements.Seismically Qualified Pipe Support Designs Completed.Mods to Designs Scheduled to Begin 790601

ML19270G462
Person / Time
Site:	Peach Bottom
Issue date:	06/01/1979
From:	Cooney M PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19270G461	List: ML19270G460 ML19270G462
References
LER-79-024-01T, NUDOCS 7906080289
Download: ML19270G462 (1)

Text

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]l The supeort for the CRD return line outside containment does not meet _ . .J

]1 seismic requirements. The CRD return line inside containr.ent i s s.e_1.smi .. ._ .}

]l cally cualified. The CRD system is operated with the return line to the . . }

]l ve ssel isolated. ' i addition, the inboard isointion che_cjc valve is i .

]l closed; threre fore, inndequate seismic succort of ei2. ire outith_contain-

]I ent has minimal safety sinni ficanc e . ....

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]] A seismic analysis performed for the outbcard CRD return line isolation _, . ,.

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]l valve piping indicates supports are not satisfactory. Seismically quali- _ ___ . , ..j g ,, fled pipe support designs have been completed for both units. Recuired i

l rodifications have been completed on Unit 2 and are e

cpected to be com- _ _ _ j pleted on Unit 3 by the end of a one week outage scheduled to begin 6/1  ;

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