ML19320A241

RO 50-313/76-21:on 760810,pinhole Leak Found on Radwaste Demineralizer B Outlet.Cause Not Determined.Affected Piping Replaced W/Schedule 10 Piping

ML19320A241
Person / Time
Site:	Arkansas Nuclear
Issue date:	09/03/1976
From:	Cook R ARKANSAS POWER & LIGHT CO.
To:
Shared Package
ML19320A230	List: ML19320A229 ML19320A241
References
NUDOCS 8004210535
Download: ML19320A241 (4)

Text

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@ loultet of Y straine, and inlet of C 2 413.downdream et TIS B C B' Radwade 1 7 89 E 13em;~ralirevl This is similar to koR sodt3/Wo-15. Leakage was coJn,d 80.I 7 89 80 o

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1. Reportabic Occurrence Iteport the. 50-313/76-21

2. Report Date: 9/3/76 3. Occurrence Daje: 8/10/76 4 Facility: Arkansas Nuclear One-Unit 1 Russellville, Arkansas

5. Identification of Occurrenec:

A pinhole leak found on outlet of B radwaste demineralizer.

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6. Conditions Prior to Occurrence:

• Steady-State Power _ , Reactor Power 0 NWth liut Standby Not Output 0 Mwe Cold Shutdown X Pcrecnt of Full Power ' 0  %

Refueling Shutdown Load Changes During~ Routine Power Operation Routine Startup Operation Routine Shutdown Operation Other (specify)

7. Description of Occurrence:e . ,

A pinhole-Icak was discovered 8/10/76 at 1430 hrs. in the heat affected zone of welds at outlet of Y strainer and inlet of CZ41B; downstream of T158.

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l March 23, 1976 - NSp-lo, Rev. 4 Page 2 of 4 .

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!(eportshic occurrence 1:cport No. 50-313/76-21 o.

8. Designation of Apparent Cause or Occierrenec:

Design Procedurc Manufacture Unusual Service Condition including Environmental

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Installation /

Construction Component Failure _ __ ,,

Operator

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Otlier (specify) X

'Ihe cause is not known at this time.

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9.

o Analysis of Occurrence:

Due to location all leakage was confined to Aux. Building and thus presents no' danger to the health and safety of the public.

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Attnehmesit "C" Ma rch 23,1976 NSP- 10, llev. 4 Page 3 Of 4

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Reportable Occurrence !!cport 110.50-313/76-21.

10. Corrective Action:

The affected piping has been removed and replaced with new sectica of schedule 10 piping.

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11. Failiere Data: i o

Similar to 50-313/76-15.

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March 23,1976 NSP- 10, Itev. 4 l'nge 4 or 4 ,,

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