ML19254E305

LER 79-085/03L-0:on 790925,during Mode 2 Operation,Refueling Water Tank Boron Concentration Was 1,705 Ppmb.Caused by Calculation Based on Boron Concentration Taken Prior to Sufficient Mixing.Operating Procedures Revised

ML19254E305
Person / Time
Site:	Arkansas Nuclear
Issue date:	10/25/1979
From:	Pendergraft R ARKANSAS POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML19254E288	List: ML19254E287 ML19254E296 ML19254E299 ML19254E301 ML19254E305
References
LER-79-085-03L, LER-79-85-3L, NUDOCS 7910310434
Download: ML19254E305 (1)

Text

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o a Iwas found to be 1705 pomb. Both Boric Acid Makeup Tanks were above the ibTr1 iminimum required levels and boron concentrations for Mode 2 operation ,

r5Tr1 iper T.S. Figure 3.1-1. RWT boron concentration was increased to 1749 ,

e s Ippmb. within one hour meeting the requirements of Action Statement ,

c , IT.S. 3.1.2.8b. There have been no similar occurrences. Reportable ,

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31 J J, l l JJ 34 4 Ju 'l el 4Q 4) (J gg g, CAUSE DESCRIPTIO'd AN; LO AH EC flVE ACilOa.S 2d i o 1The calculated boron concentration required for makeup to the RWT was basejd lilii on a RWT boron concentration that was taken prior to sufficient mixing. ,

, , i 0perating procedures have been revised to require Refueling Water Tank ,

, , Irecirculation prior to extracting sample for boron analysis for RWT ,

, . Imakeuo concentration purposes. ,

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