ML18139A530

LER 80-020/03L-0:on 800822 After Boric Acid Batching,Chemist Reported Concentration Above Tech Spec Requirements.Caused by Transfer of Batch Tank to Inservice Bast.Manual Shutdown Initiated & Boric Acid Diluted to Tech Spec Limits

ML18139A530
Person / Time
Site:	Surry
Issue date:	09/19/1980
From:	WILSON J L VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139A527	List: ML18139A526 ML18139A528 ML18139A529 ML18139A530
References
LER-80-020-03L-02, LER-80-20-3L-2, NUDOCS 8009240473
Download: ML18139A530 (2)

Text

. N(3C FOf'!M~366 (7-77) . e* LICENSEE EVENT REPORT U.S. NUCLEAR REGULATORY COMMISSION e CONTROL BLOCK: ._I _...___..__..__~_.__~10 1 6 (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION) Iv I A I s1 Pl SI 2 IG)I O I O I -1 °I O I O I O I O I -I O I O 101 4. I 1 1 1 1 1 1 1 101 I 10 7 8 9 LICENSEE CODE 14 15 LICENSE NUMBER

• 25 26 LICENSE TYPE :JO 57 CAT 58 CON'T CID] 7 8 ol s I 2 I 2 I s Io IG)I O I 9 1 1 I 9 1 8 I O I G) EVENT DATE 74 75 REPORT DATE 80

~G) I o I s I o I o I o I 2 I s I 1 101 60 61 DOCKET NUMBER 68 69 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@

I Following Boric Acid batching (while Unit No. 2 was at 62 % power) the station chemist reported a Boric Acid concentration of 13.2% in the Unit's Boric Acid Storage Tank and Boron Injection Tank. This is les 9 conservative with respect to the requirements of T.S.3.2.B.3 and T.S.3.3.A.3 and is reportable per T.S.6.6.2.b.(2)

Redundant systems were operable and had the required capability for reactor control. Therefore the health and safety of the public were not affected.

[]JI] 7 8 9 80 [IIT] 7 8 SYSTEM CAUSE CAUSE COMP. VALVE CODE CODE SUBCODE COMPONENT CODE SUBCOOE SUBCODE L 8 1 Hj@ ~@ L!J@ zj zj ZI ZJ ZI z1@ ~@ LU@ 9 10 11 12 13 18 19 20 SEQUENTIAL OCCUR REN CE REPORT @ LEA/RO LVENTYEAR REPORT NO. CODE TYPE REPORT I 8 j O j l==1 10 I 210 I I/I I o I 3 I LI:.J L=:J NUMBER 21 22 23 24 26 27 28 29 30 31 ACTION FUTURE TAKEN ACTION EFFECT SHUTDOWN Q ATTACHMENT NPRD-4 PRIME COMP. SUPPLIER REVISION NO. LQJ 32 COMPONENT MANUFACTURER W@ z I 9 I 9 I 91@) ON PLANT METHOD HOURS SUBMITTED FORM SUB. LQJ@W@ W@ W I o! o! 01 11 Lil@ LBJ 33 34 35 36 37 40 41 42 CAUSE DESCRIPTION ANO CORRECTIVE ACTIONS @ 43 44 47 The cause 1.S determinned -t-0 be the i::rans'fering of the Batch Tank directly to an _inservice Bast. The immediate corrective action was to initiate manual shut down DJ]] .I of the reactor and to !iilute the.B.oric Acid tc Tech. Spec. Lim;i.ts (11.5-13%).

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~@I Routine Chemistry Sampling 8 9 10 12 11 ACTIVITY CONTENT Q\ RELEASED OF RELEASE AMOUNT OF ACTIVITY [IE] ~@) ~@.._I ___ N_A ____ __. 7 8 9 10 11 44 45 46 80 .LOCATION OF RELEASE @ NA 44 45 80 PERSONNEL EXPOSURES r:;;:;,, . NUMBER A TYPE DESCRIPTION ITEJ j O IO IO J~@...__

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___. 8 9 11 12 13 80 PERSONNEL INJURIES Q NUMBER DESCRIPTION6 NA GJIJ I O I O I O I@ 8 9 11 1..12 _______________________________________

__.80 LOSS OF OR DAMAGE TO FACILITY '43\ TYPE ' DESCRIPTION NA 8. 9 ~10-------------------------------------------~80 PUBLICITY

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DESCRIPTION~

ITliJ ur.Jeil NA 8 9 10 8 009240 J;f,3 I I I I I I I I I I I I J'! NAMEOFPREPARER J. L. Wilson 68 69 80 ; PHONE: _(.a..;8:..;0'-4'""')--"'3-"-5""-7--

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• . i.. e ATTACHMENT 1 SURRY POWER STATION UNIT NO. 2 DOCKET NO: 50-281 REPORT NO: 80-020/031-0 EVENT DATE: 08-22-80 TITLE OF REPORT: EXCESSIVE BORIC ACID IN BAST "C" AND BIT 1. Description of Event: Following Boric Acid Batching grom 1-CH-TK-5 to 1-CH-TK-lC (while Unit No.2 was at 62% power) the station chemist reported a Boric Acid concentration of 13.2% in 1-CH-TK-lC and 2SI-TK-2.

The range allowable by T.S 3.2 and 3.3 is 11.5-13%.

2. Prob?ble Consequences/Status of Redundant Systems: 1-CH-TK-lC provide Boric Acid for reactor control for Unit No. 2. Redundant system were operable.

Adequate capability for reactor control was available at all times. Therefore the health and safety of the public were not affected.

3. Cause of the Event: The cause of the event was caused by transfering the batch tank to an inservice BAST. 4. Immediate Corrective Action: Immediate corrective action was to initiate reactor shutdown and to dilute the Boric Acid to within specifications.

5. Scheduled Corrective Action: None 6. Action Taken to Prevent Recurrence:

A change to OP-8.5 has been initiated to require that all transfers of Boric Acid to an inservice tank are made from tanks of known coneentrations.

7. Generic Implications None