Text

Forwards LERs 78-005/03L-0,78-006/03L-0 & 78-007/03L-0
	ML19326B575
Person / Time
Site:	Arkansas Nuclear
Issue date:	03/24/1978
From:	David Williams; ARKANSAS POWER & LIGHT CO.
To:	Howard E; NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19326B576	List: 05000313/LER-1978-005-03, /03L-0:on 780302,steam Generator Tube Indications Exceeded Plugging Limit on 40% of Nominal Wall Thickness. Caused by Defect Near Upper Tube Sheet.Tubes Plugged; 05000313/LER-1978-006-03, /03L-0:on 780305,studs on Lower Steam Generator Primary Manway Cover Sheared Off.Caused by Crack of 90% of Stud Diameter.Studs Ultrasonically Checked for Cracks & One Removed; 05000313/LER-1978-007-03, /03L-0:on 780308,ventilation Dampers Failed to Seal Properly After Actuation.Caused by Sticky Air Supply Sys.Bladder Pressure Gauges Replaced & Air Supply re-adjusted; ML19326B575;
References
	1-038-16, 1-38-16, NUDOCS 8004160358
	Download: ML19326B575 (1)
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ARKANSAS POWER & LIGHT COMPANY POST OFFICE BOX 551 UTTLE ROCK. ARKANSAS 72203 C501) 371-4000 March 24, 1978 G

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Mr. E. Morris Howard, Director 00:.:

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U. S. Nuclear Regulatory Cor. mission 5

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Arlington, Texas 76011

Subject:

Arkansas Nuclear One-Unit 1 Docket No. 50-313 License No. DPR-51 Repor 9 1-occurrence Report Nos.60-313/78-Q 50-313/78-6, and 50-313/78-7 (File:

0520)

Gentlemen:

In accordance with Arkansas Nuclear One - Unit 1 Technical Specification 6.12.3.1, find attached the subject Reportable Occurrence Reports concern-ing five defective steam generator tubes, the shearing of two studs on the lower steam generator primary manway cover and the failure of dampers to i

seal properly after actuation.

l Very.,truly yours,

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Daniel H. Williams Manager, Licensing i

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