ML18139A133

LER 80-002/01T-0:on 800320,insp of Containment Following Type a Leak Rate Revealed Eight 1/4 Inch Holders Drilled Through Containment Liner.Caused by Improper Interpretation of Procedure During Design Change 78-48.Repair Planned

ML18139A133
Person / Time
Site:	Surry
Issue date:	04/02/1980
From:	Joshua Wilson VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18139A132	List: ML18139A131 ML18139A133 ML18139A134
References
LER-80-002-01T-01, LER-80-2-1T-1, NUDOCS 8004080482
Download: ML18139A133 (2)

Text

LICENSEE .EVENT REPORT ------. ------------*** ------*~----~--... _, ---------*-"-"*-*--~

C~NTROL BLOCK: I 1 I

• I 10 (PLEASE PRINT OR TY.LL REQUIRED INFORMATION) 6 I v I A I s *IP Is I 2 10l o I o I -I o Io Io I a I a 1-16 la 101 4 I , 11 I 1 Ii 101 I 10 7 8 9 LICENSEE CODE 14 15 LICENSE NUMBER 25 26 LICENSE .TYPE JO 57 CAT 58 CON'T mJJ 7 B L1.1© I ol s I o I o I o I 2 _ I a I 1 101 a I 3 I 2 I a I* s I a 10 L..I __.___,_____._...__......___,10 60 61 DOCKET NUMBER 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION ANO ?ROBABLE CONSEQUENCES

@ I An inspection of the Unit 2 containment, following a Type A Leak Rate Test, disclosed* I that eight (8) 1/4 inch holes had been drilled through the containment liner. (The holes I [Q];TI I and other minor construction deficiencies resulted in an unsatisfactory test). This is *~,.reportable in accordance with Technical Specification 6.6.2(a).5.

lTID *@ID [II]] 7 8 9 7 B SYSTEM CODE Is IA I@ 9 10 CAUSE CAUSE CODE SUBCODE COMPONENT CODE W@ w@ lvlElslslEILI@

11 12 13 18 SEQUENTIAL OCCURRENCE

@ LE R/RO LVENT YEAR REPORT NO. CODE I 8 I O I I I I ci I O I 21 I,...., IO I 11 21 22 23 24 26 27 28 29 COMP. SUBCOOE w@ 19 REPORT TYPE L!J JO VALVE SUBCODE Lzj@ 20 1=:J 31 ACTION FUTURE TAKEN ACTION EFFECT SHUTDOWN r:;:::,, ATTACHMENT NPRD-4 PRIME COMP. REVISION NO. LQ.J 32 COMPONENT MANUFACTURER 80 ON PLANT METHOD HOURS SUBMITTED FORM SUB. SUPPLIER ~@~@ ~@ ~ I 01010101 W@) ~@-* W@ 33 34 35 36 37 40 41 42 43 I G 12 I 1 I 5 I@) CAUSE DESCRIPTION AND CORRECTIVE ACTIONS @ I During the implementation of Design Change 78-48 holes were drilled through the liner o:IIJ I as a result of improper interpretation of the implementation procedure.

These holes as r:::IJ:TI .I well as other construction deficiencies encountered will be repaired prior to the Type A Retest. 7 8 9 FACILITY '3a' STATUS. %POWER OTHERSTATUS

\:::,I [QI) W@ j O ! 0 j O l ..... I _ ____;:.N=A

__ ___, B 9 10 12 11 ACTIVITY CONTENT Q\ RELEASED OF RELEASE AMOUNT OF ACTIVITY [IE] LlJ @) u.1(§ I NA 7 8 9 . 10 11 7 44 44 PERSONNEL EXPOSURES Q\ METHOD OF DISCOVERY w@I Inspection 45 46 NA 45 DISCOVERY DESCRIPTION following Leak Rate Test LOCATl~N OF RELEASE @ 47 80 80 80 NUMBER ~-TYPE DESCRIPTION [iI?J j O ! 0 j O lW@L....-

_______ __.:;N~A _______________

,-....1 8 9 11 12 13 PERSONNEL INJURIES Q NUMBER DESCRIPTION~ 01 01 oj@)

• 7 a 9 11 .._12---------~-----------------------------_.ao 80 NA LOSS OF OR DAMAGE TO FACILITY '4J' TYPE DESCRIPTION Lz.J@ ... NA B 9 10 80 PUBLICITY . 1J.,J2_ 'J . / ISSUEDQDESCRIPTION~

_1 Q ~. NRC USE ONLY .., }TI] LNJ~ .... l _____________

N_A=S...;;C""""0_4_0_S_o

___ ___.l I I I I I I I I I I I I I ! 8 9 10 . 68 69 80 ; (804) 357-3184 NAME OF PREPARER ___ J_._L_._W_i_l_s_o_n_~----------

PHONE: 0 II. "

e ATTACHMENT PAGE 1 of 1 SURRY POWER STATION, UNIT 2 DOCKET NO: 50-281 REPORT NO: 80-002/0lT-O EVENT DATE: 3-20-80 TITLE OF REPORT: CONTAINMENT LINER HOLES 1. Description of Event:

• An inspection of the Unit 2 containment, following a Type A Leak Rate Test, disclosed that eight (8) 1/4 inch holes had been drilled through the containment liner~ This event is ]:'.eportable in accordance with Technical Specification 6.6.2(a).5.

2. Probable Consequence and Status of Redundant Systems: These holes and other minor construction deficiencies contributed to an unsatisfactory Type A Leak Rate Test. Since Unit No. 2 is in a shutdown and defueled condition the health and safety of the general public were not affected.

3. Cause: During the implementation of Design Change 78-48 to install RTD's in the containment, holes were drilled through the liner as a result of improper interpretation of the implementation procedure.

4. Innnediate Corrective Actions: The problem was referred to the Architect Engineer to generate a procedure to repair the holes. 5. Subsequent Corrective Actions: The procedure has been received by the station and repair to all the holes will be completed prior .to recommencement of the Type A Test. Repair of the other minor construction deficiencies impacting on the Type A Test will also be completed prior to conducting the Test. 6. Action Taken to Prevent Recurrence:

Construction personnel have been reinstructed on the intent of the working procedures to insure they understand and do not perform any work not specifically covered in the procedure.

7. Generic Implications:

None