ML18150A492

LER 86-018-01:on 861112,discovered Environ Qualified Components Not Installed Per Approved Raychem Guidelines. Caused by Inadequate Training of Personnel Installing Matl. Procedures Revised & Addl Training conducted.W/870724 Ltr

ML18150A492
Person / Time
Site:	Surry
Issue date:	07/23/1987
From:	Benson D, Saunders R VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM)
References
86-059A, 86-59A, IEIN-86-053, IEIN-86-53, LER-86-018, LER-86-18, NUDOCS 8707300520
Download: ML18150A492 (4)

Text

UPDATED REPORT-PREVIOUS REPORT DATED 2/2/87 POW 28-06-01-01 NRC Form 386 U.S. NUCLEAR REGULATORY COMMISSION (9-83)

APPROVED 0MB. NO. 3160,0104 EXPIRES: 8131188 LICENSEE EVENT REPORT (LER)

FACILITY NAME (1) DOCKET NUMBER 121 I P..uE 131 Surry Power Station, Unit 2 o rs r o r o I o r 2 1 81 1 I 1 oF o13 TITLE (4)

Improperly Installed Raychem Splices on EQ Equipment Due to Inadequate Procedures EVENT DATE (5) LER NUMBER (6) REPORT DATE (7) OTHER FACILITIES INVOLVED. (BJ MONTH DAY YEAR YEAR ft SE~~~~~~AL :ft~~~~~~ MONTH DAY YEAR FACILITY NAMES DOCKET NUMBER(S) 1 I 1 1 I2 8 6. 8 1G - o I1 1s - oI 1 n 17 ?I 1 R b OPERATING THIS REPORT 16 SUBMITTED PURSUANT TO THE REQUIREMENTS OF 10 CFR §: (Chock on* or mor* of tho fol/ovyin(I) (11)

.,___M_o_D_E.... <<e_J_......._.N:....:.+---t 20.402Cbl - 20.405!cl ,_ 60.73CelC2JUvl - 73.71Cbl POWER 1* 20.406(a)C1)(1) l50.38~c)(1) 60.73(alC2lCv) 73.71Ccl LEVEL ,..._ ,- - -

(10) Q IOI O 20.40&CalCUUIJ - 60,311(clC2l - 60.73(a)C2JCvlll ~ OTHER (SPtJC/fy in Ab1tract IH/ow *nd In T*xt. NRC Form 60.73(alC2)(1) 60.73(alC2)(villlCAl 366A) l50.73(alC2lCIIJ 60.73(alC2lCvllllCBl "Special Report" 60.73(alC21Cllil &0.73(al(21Cxl LICENSEE CONTACT FOR THIS LER (12)

NAME TELEPHONE NUMBER AREA CODE R. F. Saunders, Station Manager s 1o 14 3 1s 11 r 13 11 1a 1 4 COMPLETE ONE LINE FOR EACH COMPONENT FAILURE DESCRIBED IN THIS REPORT (131 MAN.UFAC- MANUFAC*

CAUSE SYSTEM COMPONENT TURER SYSTEM COMPONENT TURER R~~o~;:i~E :111:1:iii!!li!iiiiiiii!iii!i!i!iii!i!i!i!i!i!i!i!iii CAUSE I I I I I I I I I I I I I . I I I I I I I I I I I I I I I SUPPLEMENTAL REPORT EXPECTED (14) MONTH DAY YEAR EXPECTED n YES (If y*s, comp/et* EXPECTED SUBMISSIDN DA TE) ~

ABSTRACT (Limit to 1400 ,,,.* .,, i,o., opproxim1taly flftHn 1in11I**,,,.** typewrimn line,) 116)

NO SUBMISSION DATE 116)

I I I On November 12, 1986,. in response to NRC IEIN 86:...53 concerning the improper installat:i,.on of Raychem splice material, an inspection of the Environmentally Qualified (EQ) equipment was performed~ At the time of the inspection, Unit 2 was in cold shutdown. The inspection discovered a number of EQ components that were not installed per approved Raychem guidelineso Procedures used during the initial installation of the Raychem heat shrink tubing did not conform to the Raychem Application Guide which resulted in improper installation. A contributing factor was inadequate training of personnel installing the heat shrink material.

The discrepancies identified were corrected. The procedures have been revised to.reflect the current application guide and additional training has been conducted.

8707300520 8~~~81

DR ADOCK O PDR NRC Form 3116 (9-83)

UPDATED REPORT-PR,IOUS REPORT DATED 2/2/87 ~ POW 28-06-01-01 NRC Form 3116A U.S. NUCLEAR REGULATORY COMMISSION 19-831 '

LICENSEE EVENT REPORT (LERI TEXT CONTINUATION APPROVED 0MB NO. 3150-0104 EXPIRES: B/31 /88 FACILITY NAME (11 DOCKET NUMBER 121 LER NUMBER 161 PAGE 131 Surry Power Station, Unit 2 01s101010121a11 a1G-ol1l a-011* 012°Fol3 TEXT /If,_. - ir ,equl,ed, - - N R C Form .MU'*J 1171 1.0 Description of the Event On November 12, 1986 in response to NRC Information Notice 86-53 concerning the improper installation of Raychem splice material, an inspection of Environmentally Qualified (EQ) equipment located inside and outside of the Unit 2 containment was performed. At the time of the inspection Unit 2 was in the cold shutdown condition.

The inspection discovered a number of Raychem splices on. EQ equipment that existed in the following general unqualified configurations.

1) *Raychem not installed per the manufacturers instructions.

2) Raychem installed over non impregnated braided cable or was heated such that blistering occurred.

3) The termination was required to be reheated to firmly seal the Raychem.

2.0 Safety Consequences and Implications Equipment associated- with the subject Raychem splices included direct acting solenoid trip valves, solenoid operated trip valves (SOV's), and instrumen-tation such as reactor coolant system temperature, pressure and level transmitters and containment sump level transmitters.

The trip valves are designed to ensure containment isolation during an event. Since these valves are designed to fail closed, an electrical failure would result in the required isolation. Also, redundant instrumentation for the parameters noted above, remained unaffected arid would have been used in lieu of the affected instrumentation during an event.

. . . I Other items identified, associated with the Raychem splices, were the 'A' & 'B' inside recirculation spray pumps (IRS) {EIIS-BE} and the*, 'A' & 'B' charging pump {EIIS-BQ}. The. IRS pump motor lead splices were found to exist in configuration (2) with Raychem over non impregnated braided cable, and the charging NRC FOl'IM 388.A

• U.S.GPO: 1986-0-624*536/455 (li-831

UPDATED REPORT~PRi7ous REPORT DATED 2/2/87 ~ POW 28-06-01-01 NRC Farm 31111A U.S. NUCLEAR REGULATORY COMMISSION 19-83)

. ,.,. LICENSEE EVENT REPORT (LERI TEXT CONTINUATION APPROVED 0MB NO. 3150-0104, EXPIRES: 8/31 /88 FACILITY NAME 11) OOCKET NUMBER 12) LEA NUMBER 16) PAGE 13)

Surrv Power Station. Unit 2 0 I5 I O I O. I O I 'J I RI 1 RI ,:; - n I 1I R - n I 1 n I-;, OF n I -;,

TEXT (If - - It--* - <<ldllitlM/ NltC Fotm .-A'*I 117) pump motor lead splices were found in configuration

( 1) . Specifically, 'A-' charging pump splice had been constructed without an inner sleeve and 'B' charging pump splice was found with tape underneath the Raychem

• material~ Since*. the configurations noted would provide adequate insulation for the splices, the operation of the* pumps would not have been a.ffected. In

.addition, there are two outside recirculation spray pumps outside containment that are redundant to the IRS pumps,*

and an*additional charging pump on the same unit as we1.l as cross tie capabilities from the other unit.

3.0 Cause Procedures used during the initial installation of the Raychem-heat shrink tubing.did not conform to the Raychem Application Guide, resulting* in improper instalia-tion. A contributing factor was inadequate training of personnel installing the heat shrink material.

4.0 Immediate Corrective Actions None required.

5.0 Additional Corrective Actions The discrepancies identified were corrected.

6.0 Actions Taken*to Prevent Recurrence The procedures have been updated to reflect the current Raychem Application Guide *. Additional training to personnel installing the Raychem material has been conducted. *

• 1.0 Similar Events See Unit*l LER 86-035.

• a. 0 *, Manufacturer /Model Number N/A NRC FORM 368A C9.a3l

• U.S.GPO: 19B6*0*624*538/455-*

VIRGINIA ELECTRIC AND POWER COMPANY Surry Power Station P. 0. Box 315 Surry, Virginia 23883 July 24,. 1987 U.S. Nuclear Regulatory Commission Serial Bo.: 86-059A Document Control Desk Docket No.: 50-281 016 Phillips Building Licensee Bo.: DPR-37 Washington, D.C. 20555 Gentlemen:

Pursuant to Surry Power Station Technical Specifications, Virginia Electric and Power Company hereby submits the following updated Special Report for Surry Unit 2.

REPORT NUMBER 86-018-01 This report has been reviewed by the Station Nuclear Safety and Operating Committee and will be reviewed by Safety Evaluation and Control.

Very truly yours, 1/o.~ <L 7Jtft-.

David L Benson Statio Manager Enclosure cc: Dr. J. Nelson Grace Regional .Adai.nistrator Suite 2900 101 Marietta Street, NW Atlanta, Georgia 30323 f'.

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