ML17275B008

Interim Deficiency Rept Re Possible Installation of Defective 2-inch Sch. 80 Piping,Initially Reported in 810309 Telcon.Deficiency Could Result in Degradation or Loss of Function of safety-related Sys.Final Rept by 811031

ML17275B008
Person / Time
Site:	Columbia
Issue date:	04/21/1981
From:	Matlock R WASHINGTON PUBLIC POWER SUPPLY SYSTEM
To:	Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V)
References
10CFR-050.55E, 10CFR-50.55E, G2-81-82, GO2-81-82, NUDOCS 8104280484
Download: ML17275B008 (6)

Text

I REGULA Y INFORMATION DISTRIBUTIO YSTEM (RIDS)

ACCESSION NBR ~ 8100280LI80 DOC ~ DATE o 81/04/21 NOTARIZED:

NO DOCKET FACIL:50 397 HPPSS Nuclear Projects Unit-2~ Washington Public Powe 05000397 AUTH,NAME AUTHOR AFFILIATION MATLOCK,R,G~

I'~ashington Public Power Supply System RECIP VAMP'ECIPIENT AFFILIATION ENGELKEIVjRBH~

Region Si San Francisco~

Office of the Director

'UBJECT:

Interim deficiency rept re possible installation of defective 2-inch Sch.

80 pipingrinitially reported on 810309 telcon.Deficiency cauld result in degradation ar loss of function of safety"related sys,Final rept by 811031, DISTRIBUTION CODE:

BOI9S COPIES RECEIVED:LTR J ENCL $

SIZE:

TITLE'. Cons tr uc t i on De fici ency Repor t (10CFR50

~ 55E)

NOTES:PM:

2 copies of all meter ial.

05000397 RECIPIENT I~ CODE/NAME, ACTION:

A/0 LICENSNG OQ RUSHBROOKrH ~

06 INTERNALB ASLBP/J ~ HARD EDU 8

STAFF 19 HYD/GEO BR 22 IE/EES MPA 20 OELD 21 QA BR 14 RUTHERFORDgW ~ IE COPIES

~TTR ENCL 1

1 1

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RECIPIENT ID CODE/NAME Lrc BR 02 BC 05 AULUCKe~ ~

07 D/DIR HUM FAC15 EQUIP QUAL BR i 1 I8E 09 LIC QUAL BR 12 NRC PDR 02 PROC/TST REV 13 01 STANDRDS DEY 21 COPIES LTTR ENCL 1

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EXTERNALR ACRS NSIC 16 08 16 16 1

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Inter im Re ort POTENTIALLY REPORTABLE 10CFR50.55(e)

CONDITION

'llPPSS NUCLEAR PROJECT HO.

2 POSSIBLE IHSTAL'LATIOH OF DEFECTIVE 2" SCH.

80 PIPE I

!WASHINGTON PUBLIC POHER SUPPLY SYSTEM DOCKET HO. 50-397 LICENSE HO.

CPPR-93 Potential Problem The potential problem involves the possible installation of 2" Sch.

80 piping, which may be defective, in Class I safety related systems.

Failures of this piping during accident conditions could result in failure of the s stems to erform their re uired functions.

p The questionable piping may have been withdrawn from a ouarantine area witho'ut performance of required inspections.

A roach to the Problem guarantined and installed piping from piping heats identified as potentially defective will be subjected to detailed physical examinations to determine if deficient conditions actually exist.

Following the above determination, any defective piping installed in Class I safety r elated system will be replaced.

Stored piping will remain in quarantine until deficient conditions are determined.

Status of Pro osed Resolution Piping of three different heats have been identified as questionable because of linear indications'hich exist.

Visual and liquid penetrant examinations have been made on piping from all of the heats, however, these examinations were not adequate to definitely establish that the piping is defective.

Plans for detailed examinations of piping sectioned from the different heats and for independent examinations of questionable installed piping have been established.

The work to accomplish these examinations has not been started.

Reason llh a Final Re ort 4'ill Be Dela ed Additional time required to accomplish the required examinations and to establish the extent of rework required.

Projected Com letion of Corrective Action and Re ort It is expected a final report identifying deficient conditions and corrective action can be provided to the HRC by October 31, 1981.

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