05000280/LER-1978-034-01, /01X-1 on 781101:noted That 17 Spare Process Piping Penetrations on Unit 1 & 23 on Unit 2 Were Not Capped in Auxiliary Bldg.Caused by Failure to Properly Complete Capping at End of Constr

/01X-1 on 781101:noted That 17 Spare Process Piping Penetrations on Unit 1 & 23 on Unit 2 Were Not Capped in Auxiliary Bldg.Caused by Failure to Properly Complete Capping at End of Constr

ML18113A709
Person / Time
Site:	Surry
Issue date:	12/13/1978
From:	Baucom T VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:
Shared Package
ML18113A708	List: 05000280/LER-1978-034-01, /01X-1 on 781101:noted That 17 Spare Process Piping Penetrations on Unit 1 & 23 on Unit 2 Were Not Capped in Auxiliary Bldg.Caused by Failure to Properly Complete Capping at End of Constr
References
LER-78-034-01X, LER-78-34-1X, NUDOCS 7812200207
Download: ML18113A709 (3)

LER-1978-034, /01X-1 on 781101:noted That 17 Spare Process Piping Penetrations on Unit 1 & 23 on Unit 2 Were Not Capped in Auxiliary Bldg.Caused by Failure to Properly Complete Capping at End of Constr

Event date:
Report date:
2801978034R01 - NRC Website

text

NRC FORM 366 (7-77)

LICENSEE EVENT REPORT CONTROL BLOCK: I I f1\\

(PLEASE PRINT O.PE ALL REQUIRED INFORMATION) 1L.. _

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I v I A I s I PI s I 1 101 o I o I - I o I o I o Io Io I-Io I a 1014 I 1 I 1 I 1 I 1 101 I 10 7

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LICENSEE COOE 14 15 LICENSE NUMBER 25 26 LICENSE TYPE 30 57 CAT 58 CON'T [TIJJ 7

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~~~~~ L!J© I o I s I o I o I o I 2 I s I o 101 1 I 1 I o I 1 I 1 I s IG) I 1 I 2 I 1 I 1 I 2 I a I G) 60 61 DOCKET NUMBER

. 68 69 EVENT DATE 74 75 REPORT DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES@

I During a routine inspection an lQ-27 78 it was noted tbat 17 spare process pipivg penetrations on Unit 1 and 23 on Unit 2 were not_ capped in the Anxj Jj ary Bui 1 ding,

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although the inside ends are sealed.

A s11hseq11eot ved fi cation inspect inn reveal-

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ed that 21 penetrations on Unit 1 and 22 penetrations on Unit 2 are affected.

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I This condition is less conservative than described in ESAR Section 5 2 This coo-

@ID I dition is reportable in accordance with T.S. 6,6,2,a,(9),

[)))) I of the public were not affected.

7 8 9

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SYSTEM CODE Isl Al@

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LEA/RO CVENT YEAR

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REPoRr 17 18 I NUMBER 21 22

CAUSE

CAUSE CODE SUB CODE COMPONENT CODE w@w@ I P! El NI El Tl RI@

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I o I 3l 41 24 26 18 OCCURRENCE CODE I o I 1 I 27 28 29 The health and safety COMP.

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30 VALVE SUBCODE w@

20 REVISION NO.

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ATTACHMENT NPRD-4

~ SUBMITTED FORM SUB.

ACTION FUTURE EFFECT SHUTDOWN TAKEN ACTION ON PLANT METHOD HOURS 31 PRIME C.OMP.

SUPPLIER COMPONENT MANUFACTURER LU@~@ ~@ LU 10 10 10 33 34 35 36 37 10 I L!J@ 1.2!.l 40 41 42 L!J@

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CAUSE DESCRIPTION AND CORRECTIVE ACTIONS @

44 47 III]J !The outside end of the penetrations were left uncapped at completion of construe-OJJJ jtion.

External welded caps will be installed on these penetrations to provide OJ)) jdouble barrier containment isolation as described in the FSAR.

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9 FACILITY STATUS

% POWER OTHER STATUS METHOD OF A

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OISCOVERY DISCOVERY DESCRIPTION (3.,

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RELEASED OF RELEASE AMOUNT OF ACTIVITY

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9 11 12 13 80 PERSONNEL INJURIES Q

NUMBER DESCRIPTION~

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9 11 12 LOSS OF OR DAMAGE TO FACILITY '43' TYPE

DESCRIPTION

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9 10 80 PUBLICITY Q

NRC USE ONL y ISSUEDr,;;\\ DESCRIPTION~

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7 8 'TB! 2'""0=2"""'0:c---c-o-2~0=-=7:r---------------------,.'.6B 69 80;;;

T. L. Baucom (804)357-3184 o

NAME OF PREPARER------------------

PHONE:-------------

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Surry Power Docket No:

Report No:

Stat ion, Unit 1 50-280.

78-034/~lX-1

,_-=---"'-----

Containment Spare.Process Piping Penetrations

1.

Description of Event

During a routine inspection on 10-27-78 it was noted that 17 spare process piping containment penetrations on Unit 1 and 23 on Unit*2 had never been capped on the Auxiliary Building end.

A subsequent verifica-tion inspection revealed that 21 penetrations on Unit 1 and Z2.penetra-tions on Unit 2 are affected.

Containment ends are capped.

The condition has existed since the construction period and is less conservative than described in Section 5.2 of the FSAR (not updated).

Upon review, on 11-1-78, of the documentation identifying the condition, it was determined that the condition was reportable in accordance with Technical specifica-tion 6.6.2.a(9).

This report is applicable to Surry Unit 1 (Docket No.

50-280) and Unit 2 (Docket 50-281).

2.

Probable Consequences/Status of Redundant Systems:

All spare penetrations are sealed on the inside (containment) ends of the penetrations.

There has been no compromise of containment integrity as evidenced by the fact that the containment has experienced two ILRT tests and five years of operation with no indication of degradation of the integrity of the inside caps, Therefore, the health and safety of

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the public have not been affected.

3.

Cause

It appears that the outside end of the penetrations were left uncapped at the completion of construction.

4.

• Immediate Corrective Action:

An immediate inventory was conducted to verify the condition initially reported.

The architect-engineer was requested to advise a method and procedures for correcting the condition.

5.

Subsequent Corrective Action:

The Surry FSAR, Section 5.2-10.states that pipe penetrations that are spares are to be capped at both ends.

In order to resolve this apparent discrepancy, external welded caps will be installed as per the architect-engineers design and thereby providing the double barrier utilized in the original design for containment isolation.

This modification will be implemented on Unit 1 by Mid April, 1979, and on Unit 2 by the end of the upcoming Steam Generator Outage, scheduled to commence in January, 1979.

6.

Actions Taken to Prevent Recurrence:

The situation described is a result of the construction process.

The procedural controls now applicable to changes' in.fac~lity configuration would preclude a recurr.ence.

e (Attachment, page 2 of 2)

Surry Power Docket No:

Report No:

Station, Unit 1 50-280 78-034/0lX-l Containment Spare Process Piping Penetrations

7.

Generic Implications:

North Anna Power Station Unit 1 has the same spare p1p1ng penetration arrangement.

We have informed our architect-engineer of this event.

They are reviewing their records to determine if other facilities are affect.