ML20070J868

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RO 76-13:on 760916,normal Boric Acid Makeup to Vol Control Tank Could Not Be Accomplished Due to Plugging of Chemical & Vol Control Sys Line 1-inch-CH-56-152.Cause Unknown.Line Will Be Inspected for Indications of Solidification
ML20070J868
Person / Time
Site: Surry, 05000000
Issue date: 10/20/1976
From: Stallings C
VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To: Moseley N
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20070J834 List:
References
FOIA-82-534 292, RO-76-13, NUDOCS 8212290075
Download: ML20070J868 (5)
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Text

VIRGINIA EI.ECTRIC AND Pow .. CO31PANY

. . Ric113t OND .VI Ro r x1 A C3GC1 October 20, 1976 Mr. Norman C. Moseley, Director Serial No. 292 Office of Inspection and Enforcement P0&M/ALH:clw U.S. Nuclear Regulatory Cocsission Region II - Suite 818 Docket Fo. 50-280 230 Peachtree Street, Northwest License No. DPR-32 Atlanta, Georgia 30303

Dear Mr. Moseley:

Pursuant to Surry Power Station Technical Specification 6.6.B.2, the Virginia Electric and Power Company hereby submits a copy of Licensee Event Report USRE-SI-76-13.

The substance of this report has been reviewed by the Station Nuclear Safety and Operating Co=:nittee and will be placed on the agenda for the next meeting of the System Nuclear Safety and Operating Co=mittee.

Very truly yours, C. M. Stallings {

Vice President-Power upply (

and Production Operations Enclosure cc: Mr. Robert W. Reid, Chief Operating Reactors Branch 4 (40 copies USRE-S1-76-13) l l

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/6 8212290075 821130 7 .

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PDR FOIA SCHLIsss2-534 PDR l

--....------...t i e t i t f-1 8 (PLEASE PRINT ALL LEQUIRED INF%3

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~ N ME LCENSE NUMBER Q j vl Al SlP lS l t l l0l0l~l0l0l0l0l0l-l0l0l 7 89 14 15 25 l4 26 l1 l1l1l0l l0l3l ,1 30 31 32 CATEGORY pf N E 00CxET NUMBER 01 CGN'T l p l ol 7 8 57 58 M59 60 61 EVENT DATE l 0l 5l 0l-l 0l 2l 8l 0 l l 0l 9l Il 6l 7l 6l [ t l 0REPORT l 1l DAK 5ll 68 69 - 74 75 EVENT DESCRIPTION o2 7 ,8 9 lDuring normal operations, it was discovered that normal boric acid cakeup to the vs 03 7 89 l control tank could not be accomplished due to an apparent plugging of CVCS line 1"c

@ ]56-152. In order to clear the line, recirculation between the boric acid tanks anj 7 8

@9l boron injection tank was secured for five (5) minutes to permit installation of a 7 89 RE l blank flange in the line.

7 89 Since Technical Specification 3.2.C.6 requires con- (cos coy $oE COMPONENT CODE

@ lP l Cl lF l lX lX lX l Xl Xl Xl ]43 VoLAToM 7 89 10 11 12 17 lz l9 l9 l9 l 44 47 W48 CAUSE DESCRIPTION 0

7 89 l Boric acid is transferred through line 1"-CH-56-152 on a regular basis for volume G 09 ltroltankmake-up. This routine usage, coupled with the fact that no malfunctionia 7 89

' 10 l heat tracing was found either in the pipe in question or any upctream pipe (con't) 7 89 FACUTY STATUS  % POWEA METHOD OF

  • OTHER STATUS I

7 8 1

9 W 10 l_1_ l 0 l 0 l l N/A l OtSCOVERY

@ l' N/A OtSCoVERY CESCRIPTON 12 13 44 45 48 ACTMTV CCATENT RELEASED AMOUNT OF ACTMTY 12 l,z,jRELEASE l N/A 7 8 9 l_z_,l OF l l N/A LOCATCN OF RELEASE 10 11 44 45 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION Q l0l0l0l Wl 7 89 11 12 13 N/A PERSONNEL INJURIES NUMBER CESCRtPTON

@ l0l0l0l 7 89 l N/A 11 12 OFFSITE CONSEQUENCES DE l N/A -

7 89 LOSS OR DAMAGE TO FAC1UTY '

TYPE

@W 7 89 10 lDESCPSTON N/A PUBUCITY Ql 7 89 N/A ADQtTIONAL FACTORS 18 l Since the capabilities of the safety injection system were not impaired by this eveg 7 89 Q l the health and safety of the general public were not affected.

7 89 NAME: Tyndall L. Baucon PHONE, (804) 337-3184 p  %

.* EVENT DESCRI~ ' ION (c::n't) tinuous recirculation, an immediate reactor rampdown was initiated until boron injection tank recirculation was returned to normal. Once the line was cleared of the obstruction, boron recirculation was again secured while the blank flangG was removed. A reactor rampdown was performed during this operation which lastG for approximately three (3) minutes. (USRE-S1-76-13)

CAUSE DESCRIPTION (con't) leaves the cause of the obstruction as an unknown factor. The line was inspectG for potential " cold" spots which could cause isolated solidification of boric acid, but none were found in the area of the obstruction. The line will be in-spected for indications of solidification during the next refueling shutdown.

, During the period of obstruction, the capability to add boric acid to the reactor coolant system was maintained. In addition, the boron injection tank was capable of performing its intended function.

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. 3 l I*nsp;cticn/Inv2stig fon R2 ports Only l 8 (

Distribution Code PDR COORDINATOR ONLY Report sent to HQs and hold copies reproduced Date l 1

Initials j ...._..._____........._..____....____....__................____.......__..____

Incoming Licensee Correspondence

1. Licensee Response to Non-Enforcement Report
2. Licensee Response to Enforcement Report
3. Licensee Response to IE Bulletins 4 General Licensee Correspondence Licensee Event Reports
a. Licensee / Facility //((M IMa /
b. Report No. A d d o dM3
c. Document Date /d M O M d. Date Received /d 'M-7d
e. Section Chief f. Principal Inspector J 9
g. Document transferred to Branch l Date Initials j
h. Licensee Response to Enforcetsnt Report Only l

Acceptable Not-Acceptable Initials 3 , h 2.790 Information YES NO X Initials kib NorE: If Yes, mark necessary documents to delete 2.790 Information and return with this form along with acknowledgement letter F to the PDR Coordinator.

Should the attached and related correspondence be placed in the PDR7 YES Y~ NO Initials I

l', PDR COPRDINATOR ONLY i Incoming Licensee Correspondence and related documents sent to HQs and PDR. /7 Date /!" Initiala d. -

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Vircinia Electric and Pover Co.mpany Eochet No. 50-280 Surry Unit 1 License No. DPR-32 REPORTABLE OCCURRENCE REPORT 30:

Ro-280/76-07 DISTRIBUTION:

Don Lanham, ADM cc With Fnclosures

! Region II Docket Files 280 Rettion II Inspector with enclosures i

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Form TE-1/76 (6/76) W Inspection / Investigation neports Only Distribution Code PDR COORDINATOR O';LY .

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Report sent to HQs and hold copics reproduced Date_

Initials Incoming Licensee Correspondence

1. Licensee Response to Non-Enforcement Report
2. Licensee Response to Enforcement Report
3. Licensee Response to IE Eulletins
4. General Licensee Correspondence h Licensee Event Reports
a. Licensce/ Facility l Y [ d C Mut./ u /
b. Report No. OM8 7[-O [
c. Document Date [t?h M d. Date Received h id7'7 ~7 [
e. Section Chief M442, f. Principal Inspector M/<
g. Document transferred to Branch Date Initials
h. Licensea Response to Enforcement Report Only Accepteble Not-Teceptable Initials 2.790 Information YES NO / ~

Initials kNb NOTE: If Yes, mark necessary documents to delete 2.790 Information and return with this form along with acknowledgement letter to the PDR Coordinator.

h Should the attached and related correspondence be placed in the PDR?

YES NO Initials fh.

PDR COORDINATOR CNLY Incoming Licensee Correspondence and related documents sent to HQs and PDR.

Date [ [' Initials ' //

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