ML18085B143

LER 81-022/03L-0:on 810301,boric Acid Storage Sys Vol Fell Below Tech Spec Level.Caused by Rapidly Borated RCS Due to Failure to Two Control Rod Position Indicators,Following Reactor Trip.Batching Commenced & Vol Raised

ML18085B143
Person / Time
Site:	Salem
Issue date:	03/23/1981
From:	Steele W Public Service Enterprise Group
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML18085B141	List: ML18085B140 ML18085B143
References
LER-81-022-03L, LER-81-22-3L, NUDOCS 8104020625
Download: ML18085B143 (1)

Text

LICENSEE EVENT REPORT CONTROL BLOCK: ~__._......__..__,__..__.,...,.1 G) (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) 6

[§J2J IN I J l:s I GI sI 1 IG)I oI oI - I oI oI oI oI oI - I oI o1014 I i I i I i I i 101 I I© 7 8 9 Lie~* '::;;:; CODE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CON'T ITIIJ  :~~~~~ LJJ©I ol 51 olo I ol 21 71 210)10 13 10 11 10 11 l©lo I 312 I 318 IL 80IG) 7 8 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@ .

((II] I Following a reactor trip at 1301 hours0.0151 days <br />0.361 hours <br />0.00215 weeks <br />4.950305e-4 months <br /> on 3/1/81, the RC System was rapidly borated due to the failure of two control rod position indicators. This resulted in the volume of the Boric Acid Storage System becoming less than the minimum Technical Specification requirement of 5106 gallons (70%) . Action Statement

[QJ]J 3.1.2.8 was entered at 2245 hours0.026 days <br />0.624 hours <br />0.00371 weeks <br />8.542225e-4 months <br /> on 3/1/81 when the volume decreased to 69% of

~ I the Technical Specification requirement.

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7 8 9 BO SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUB CODE SUBCODE

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7 B 9 10 11 12 13 18 19 20 SEQUENTIAL OCCURRENCE REPORT REVISION

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w LE R RO LVENT YE.A.A REPMT NUMBER I8 11 I ~ I 01 21 21 1......-1 IoI3 1 L=J LQJ 21 22 23 24 26 27 28 29 30 31 32 ACTION FUTURE EFFECT SHUTDOWN *ATTACHMENT NPRD-4 PRIME COMP. COMPONENT TAKEr~

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47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS @

I Rapid boration and the use of borated water from the Boric Acid Storage System for makeup resulted in the minimum required volume to decrease below 5106 gallons (70%).

Batching was commenced at 2245 hours0.026 days <br />0.624 hours <br />0.00371 weeks <br />8.542225e-4 months <br /> on 3/1/81 and the volume was raised to 95% I OJ)) I (the administrative limit) of the systems capacity at 2400 hours0.0278 days <br />0.667 hours <br />0.00397 weeks <br />9.132e-4 months <br /> on 3/1/81. The

[IIrl I Action Statement was terminated at 0550 hours0.00637 days <br />0.153 hours <br />9.093915e-4 weeks <br />2.09275e-4 months <br /> on 3/2/81, when operational Mode 5 was s 9 entered. 80 FACILITY (.;QI METHOD OF (.;:;\

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