ML20052A402

LER 82-004/01T:on 820302,testing of HPI Nozzle Areas Revealed Loose 2A2 Thermal Sleeves & Cracks in Id of Safe End & Piping.Caused by Thermal Fatigue.Cracked Piping,Safe End & Thermal Sleeves Replaced

ML20052A402
Person / Time
Site:	Oconee
Issue date:	04/13/1982
From:	Norris J DUKE POWER CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20052A394	List: ML20052A393 ML20052A402
References
LER-82-004-01T-02, LER-82-4-1T-2, NUDOCS 8204280301
Download: ML20052A402 (1)

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mePOAT DATE EvEur OEsca PnON ANo PnosAsts coussouaNCES O'o g lNon-destructive testing of the HP Enozzle areas revealed that the 2A2 thermal  ;

sleeve was loose and that there were cracks in the ID of the safe end and piping.

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, , ,The 2B1 thermal sleeve was loose. The 2B2 thermal sleeve had a 360 degree crack, o , gin the rolled area. A rupture in this line would be classified as a small break,

,LOCA, an accident for which FSAR analysis shows that the plant could be safely

, , gshut down."Thus, the health and safety of the public were not affected. ,

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i o lThe apparent cause of the cracking in the 2A2 safe end and piping appears to be g gi thermal fatigue resulting from a loose thermal sleeve. The 2A2 cracked piping,,

, l safe end, and thermal sleeve were replaced. The 2B2 thermal sleeve was replaced.,

, , ,The 2B1 thermal sleeve was hard roll expanded to return the thermal sleeve to

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i i iiiiiiiiii,I NAME OF PmgPARER J. F. Norris mons. (704) 373-2844

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