05000280/LER-2077-001, Re Cease of Recirculation Flow from B Boric Acid Tank

Re Cease of Recirculation Flow from B Boric Acid Tank

ML19105A124
Person / Time
Site:	Surry
Issue date:	02/16/1977
From:	Stallings C Virginia Electric & Power Co (VEPCO)
To:	Moseley N NRC/RGN-II
References
Serial No. 061 LER 1977-001-00
Download: ML19105A124 (7)

LER-2077-001, Re Cease of Recirculation Flow from B Boric Acid Tank

Event date:
Report date:
2802077001R00 - NRC Website

text

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e LICENSEE EVENT REPORT e CONfROL BLOCK: I 1 I I I I I I (PLEASE PRINT ALL REQUIRED INFORMATION]

LICENSEE NAME

@E] IV I A I s I p I s I* 2 I 7

8 9 14 CATEGORY

@E]coN'T IP Io I 7

8 57 58 REPORT TYPE w 59

EVENT DESCRIPTION

6 LICENSE NUMBER LICENSE TYPE I o Io 1-1 o I o I o I o I o 1-1 o.W I 4 I 1 I 1 I 1 I o I 15 25 26 30 REPORT SOURCE w

60 DOCKET NUMBER F.VENT DATE lo Is Io 1-1 o I 2 I s I 1 I lo Ii Ii Is '7 I 71 61 68 69 74 75 EVENT TYPE lo 13 I 31 32 REPORT DATE I I I 80

@lg] louring nonoal operation a check of tbe Boron Injection Tank recircqlation fJow india 7

8 9 80

~

lcated that recirculation flow from "B" Boric Acid Tank had........c...eased. Ibis flaw bad I

7 8 9 80

!oj4j lbeen found ta be noro,al four baJJrs earlier d,,rina tbe roJJtine Jogging procedJJre, I

7 8 9 D

80 ffi l.:r.bis is contrary to Technical Specification 3-2,h,6 which provides for continJJoJJs I

7 8 9 80 I 7

8 9 SYSTEM CODE

@0 Is IHI 7

8 9 10

CAUSE

CODE Lci 11 CAUSE DESCRIPTION COMPONENT COOE IM IE I c I FI ul NI 12 17 PRIME COMPONENT SUPPLIER LN...J 43 COMPONENT MANUFACTURER lclz lo lo!

44 47 80 VIOLATION l_yJ 48

~

IThe coupling between the motor and pump on Boric Acid transfer pump (l-GH-P-20) was 7

8 9 I

80 I

~

lbraken, This coupling was repaired and tbe pnrop was tested satisfactorily Tbe 7

8 9 80 IT@J lcm1plina faiJJJre was due ta the vibration existing in tbe coupling wbicb (cantirn1ed) I 7

8 9 D

80 EE]

7 8

FACILITY STATUS LJ 9

FORM OF ACTIVITY RELEASED

% POWER OTHER STATUS Io I 1 I 41 lz 10 12 13 44 CONTENT rn w OF RELEASE

'AMOUNT OF ACTIVITY lzJ '~N_A _____ ~

7 8

9 10 11 44 PERSONNEL EXPOSURES NUMBER TYPE

DESCRIPTION

QEJ Io Io I al W 7

8 9.

11 12 13 PERSONNEL INJURIES NUMBER

DESCRIPTION

rn lo lol ol 7

8 9 11 12 OFFSITE CONSEQUENCES rn 7

8 9 LOSS OR DAMAGE TO FACILITY TYPE

DESCRIPTION

~w 7

8 9 10 PUBLICITY METHOD OF DISCOVERY w

45 45 46 DISCOVERY DESCRIPTION 80 LOCATION OF RELEASE 80 80 80 80 80 [2E]............. ___________________________ _J 7

8 9 80 ADDITIONAL FACTORS GEJ lrbe capabi Ji ti es of tbe Safety Jnjecti on System were not impaired by the event, 7

8 9 since I 80 ITJfil jthe Boron Injection Tank maintained its full capabilities. Therefore, the (Continued) I 7

8 9 80 NAME:

Tyndall L. Baucom PHONE:

(804) 357-3184 GPO 8 81

• 6 6 7

EVENT DESCRIPTION (CONTINUED) receive recirculation flow from "C" Boric Acid Tank and thereby restored the required flow. A Maintenance Order (SZ-14130) was initiated on the "B" recirculation system.

This event is reportable per Technical Specification 6.6.2.b (1)

(RO-S2-77-0l)

CAUSE DESCRIPTION (CONTINUED) was caused by alignment deviations. Since the failure was due to an alignment problem rather than a generic deficiency, no further corrective action is anticipated for the three similar pumps in the boric acid transfer system. In addition, corrective action is not considered necessary due to the frequency of logging of recirculation flow, the availability of a standby pump, and the temperature behavior of the Boron Injection Tank during this occurrence.

ADDITIONAL FACTORS (CONTINUED) health and safety of the general public were not affected.

)...

VIRGINIA. ELECTRIC.A.ND POWER COMPANY RIOHMOND, VIRGINIA 23261 February 16, 1977

• Mr. Norman c. Moseley, Director Office of Inspection and Enforcement u. s. Nuclear Regulatory Commission Region II - Suite 818 230 Peachtree Street, Northwest Atlanta, Georgia 30303

Dear Mr. Moseley:

Serial No.

061 PO&M/TAP:dgt Docket No.

50-281 License No.

DPR-37 Purusant to Surry Power Station Technical Specification 6.6.2, the Virginia Electric and Power Company hereby submits a copy of Re-portable Occurrence No. RO-S2-77-0l.

The substance of this report has been reviewed by the Station Nuclear Safety and Operating Committee and will be placed on the agenda for the next meeting of the System Nuclear S~fety and Operat-ing Committee.

Enclosures Very truly yours, ZP>>t. 0/a?/~J-r c. M. Stallings Vic.e President-Power Supply and Production Operations 40 copies RO-S2-77-0l cc: Mr. Robert W. Reid, Chief Operating Reactors Branch 4

CONTROL BLOCK: I LICENSEE EVENT REPOR

• I I I I I (PLEASE PRINT ALL REQUIRED INFORMATION]

LICENSEE NAME

@El Iv I A Is I PI s I 2 I 7

B 9 14 CATEGORY

@12JcoNT IP Io I 7

8 57 58 REPORT TYPE w 59

EVENT DESCRIPTION

1 6

LICENSE* NUMBER LICENSE TYPE I o I o I - I o I o I o I o I o 1 -1 o.lru I 4 I 1 I 1 I 1 I o I 15 25 26 REPORT SOURCE L!J 60 DOCKET NUMBER EVENT DATE lo Is Io 1-1 o I 2 I. 8 I 1 I lol1l118'711I 61 68 69 74 30 75 EVENT TYPE lo 13 I 31 32 REPORT DATE I I I I

80

[£@1 Inuring normal operatfan a cbeck of tbe Boron Injection Tank recirculation fJow indi-7 8 9 80 1°131 I cated that recirculation flow from "B" Boric, Acid Tank had ceased. Tbis fJow bad I

7 8 9 80 joj4! lbeen found.to be nanoal four bour_s earlier during tbe routine Jogging procedure, I

7 8 9 80 iol5j hhis is contrary to TecbnicaJ Specification 3.2,b,6 which provides for continuous J

7 8 9 80 I 7

8 8 SYSTEM CODE

@El Is IHI 7

8 9 10

CAUSE

CODE Lu 11 CAUSE DESCRIPTION COMPONENT CODE IM I E I C I 1d U I NJ 12 17 PRIME COMPONENT SUPPLIER LN.J 43 COMPONENT MANUFACTURER I GI 2 IO IO I 44, 47 VIOLATION L_yJ 48

~ I The coupling between the motor and pump on Boric Acid transfer pump (1 -GH-P-20) was 7

8 9

~ I broken, This coupling was repaired and tbe pump was tested satisfactorily Tbe 7

8 9 80 80 I

80 I 7 B 9 80 FACILITY STATUS

% POWER OTHER STATUS EE]

liLJ Io I z I 41 lz

• 7 8

9 10 12 13

.44 CONTENT FORM OF ACTIVITY RELEASED rn w OF RELEASE AMOUNT OF ACTIVITY w

_I N.,....A ------'-"'

7 8

9 10 11 44 PERSONNEL EXPOSURES NUMBER TYPE

DESCRIPTION

ITEl Io I o I ol W 7

8 9 11 12 13 PERSONNEL INJURIES NUMBER

• DESCRIPTION Ealololol 7

8 9 11 12 OFFSITE CONSEQUENCES [ili]

7 8 9 LOSS OR DAMAGE TO FACILITY TYPE

DESCRIPTION

IT@ LzJ 7

8 9 10 PUBLICITY METHOD OF DISCOVERY w

45 45 46 NA DISCOVERY DESCRIPTION 80 LOCATION _OF RELEASE 80 80 80 BO 80 [ill]............ ____________________________ _J 7

8 9 80 ADDITIONAL FACTORS

~

lrbe capabilities of the Safety Injection System were not impaired by the event, 7

8 9 since I 80 ITEJ jthe Boron Injection Tank maintained its full capabilities. Therefore, the (Continued) I 7

8 9 80 NAME:

Tyndall L. Baucom PHONE: (804) 357-3184 GPO 881* 667

EVENT DESCRIPTION (CONTINUED) receive recirculation flow from 11C11 Boric Acid Tank and thereby restored the required flow. A Maintenance Order (S2-14130) was initiated on the 11B11 recirculation system.

This event is reportable per Technical Specification 6.6.2.b (1)

(RO-S2-77-0l)

CAUSE DESCRII>TION (CONTINUED) was caused by alignment deviations. Since the failure was due to an alignment problem rather than a generic deficiency, no further corrective action is anticipated for the three similar pumps in the boric acid transfer system. In addition, corrective action is not considered necessary due to the frequency of logging of recirculation flow, the availability of a standby pump, and the temperature behavior of the Boron Injection Tank during this occurrence.

ADDITIONAL FACTORS (CONTINUED) health and safety of the general public were not affected.

~

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