ML19273C195

Significant Const Deficiency 14 Interim Rept, Unsatisfactory Impact Tests on Pipe Penetration Assemblies 3 & 4. Caused by Fatigue Produced by Typical Dynamic Events.Matl Returned to Manufacturer for Repair

ML19273C195
Person / Time
Site:	Waterford
Issue date:	10/29/1979
From:	Costello J, Cruich J, Milhiser R LOUISIANA POWER & LIGHT CO.
To:
Shared Package
ML19273C194	List: ML19273C193 ML19273C195
References
NUDOCS 7911150261
Download: ML19273C195 (3)

Text

{{#Wiki_filter:. . LOUIS!AliA Pok'ER & LIGHT CCit?.Un* k'ATERFORD SES USIT NO 3 Interir. Report cC Significant C:nstru::ica Deficiency "o la Unsatisfactorf Inpac: Tests O g on Pipe Penetration Assar.blies 3 4 a

                                                                    - 9[(5' ))hgfb I

Reviewed by * [ " ' ' ' [O / 29/77 JC ica - Site Manager /

                                 /

Reviewed by f' (# s(-{ 'M R J !!ilhise7 Project Superintende:Y

                       /*. * ,           -

s / Reviewed by p

                        ,  a     al:   7- . ,. y /
                                                   .- n J Castello - Project 1.icensing Engineer
                          ..          /

s

                             .s'   .s Reviewed by    /. ' . '6 .d .' e R A Hartnett - Q A Jite Supervisor 791115o      9. G l

INTERIM REPORT SIC:H FICA::T CO::'iT"tTTT'Y: DEFTCTE';CY '!O 14 UNSAT I S FACTORY I:1 PACT TESTS . ON PIPE pCET:'aT10:: A3SI M LIF.S 3 5 4 * ~ D " l 3i f M9 NJ D w AAN 22 Summary Pursuant to the requirenents of ICCFE50.55(e) this report identifies a nonconfarnance of impact properties for the process pipe of Contaiament the 'Jaterford SES Penetration Assenblies 3 and a suppited to Ebasco at Unit No 2 Project by Associated Piping and Engineering Company - Temp Flex Division (Cetpton, California). . Descriotion Associated Piping and Engineering Corporation - Temp Flex Dtvision, undir (NY-4C?i22) to Ebasco Serrices Incorporated, sup-purchase order contract plied ASMZ Cl ss 2 p ccess pipe of Nccontainment 3 Project whichpenetration are to beassemblics used for 3 aad 4 to the Waterford SES ::

                                     - Jnitwas determined by the Ebaccc Quality Assurance the feed. ester system.

Department that impact tcst results for this heat (7LO2364) did notEditicn, 1971 meet the acceptance criteria of AS:!E, Sectica !!!, Subsection ':E, Winter 1973 Addenda for the application. Specifically the Code required that this material hcve a lateral expansica of 25 mils far Charpy V-notch i= pact testing. Actual C y results were 13, 19, and 21 cils lateral expan-This de-sion for the process pipe of containment penetraticns 3 and 4 viation was detected prior to installatica of these assemblies. tests were perforced on re-For further verification of this It was data twothat determined C y similar unacceptable values presentative heats. were obtained. (7QAD-13) As required by Asscciated Piping QA Manual and E'aasco procedura results by vendor and Ebasco f ailed to de-initial QA review of the test Subsequcnt to tect the deviation of conformance to the Ccde requirement. this discovery Ebasce initiated NCR No W3-1695 describing this deficiency on October 4, 1979. It was ccnfirmed by Associated Piping and Engineering Corporation - Tempfor Flex Divisten that saf er. related ecmponents f abricated frem this heat the Waterferd SES l' nit 50 3 Project were limited to the two process pipes for penetrat Lin assemblies cese ribed herein. Further veri #ication was ch-tained f rem Assee 2ated Pipin and 1:ngineering Corpora:icn - Temp Flex Di-vision to asrure that no other safety related components t'or other nuclear projects were supplied t' rem this heat number. Saferv Inclication The Charpy Test is performed to demonstrate the ability of the piping to equaline the design stresses asThe forth in Sub-section 3.9.3 of the set results Final Safety Analysis Report. of the impact test ing on pro-indicate that fatigue could cess pipe of penetration assemblies 3 and 4 occur when the piping is subjected to typical dynanic events which may oc-cur in the plant. If lef t uncorrected, this deficiency could Icad to pipe

crack during cold hydrostatic t o :t s or 1. iter during eme r;;ency feedwater operation due to corrosion / thernal st ress. Corre" rive Action - Rep resent int; a d isc repanny in initial review o f Q A detunents and a devi-aticn f rom design criteria (Code ?,equirements) two modes of corrective action are currently uncerway. Preparations are currently underway by Ebascc Quality Assurance to perforn a fceility resurvey of Accccia:cd Piping and Engi-neering Corporation - Temp Flex Division with special emphasis on the training program and ncchanics of the Q A records revieu proc 2ss. A :icns required of the supplier as a result of this survey will ae identified in the final report. To ccrrect the catument revieu dic:repancies by the Ebasco Ven-

    - -- dar Qualit; Assurance 2epre:en:a:1.2 a 2 rrective :cti;r direc-tive is bein; prepared by the Project Quality A surance Engineer
     ""'[forissuanceto the Ebacco VQAR Supervicor. The r:sults of this r-port will be identified in the final report.

To correct the raterial deficiencies of the pr: ess pipe of the penetratica assemblies the ma:erial was returned to Associa:ed Piping and Engineering Corporatica - Ten; Flcn Divisica f or re-pair. This supplier will qua ify a heat trea:nen: process for improving impact properties to teet Ccde requirement: using net. pipe fabrica:ed fren the sane heat (0LO226a. Upon 22:2ptab_c resultc frca this he:: treataent qualificnt:ca testing, the sup-plier will then remove the process pipe f rca the two assemblies iden:ified herein, and apply the 3:22 henc tr strent procass. If unacceptable resulta cre obtained frc= the heat trea:nen: qua-lification pr:cedure, the supplier will repla c '.: pr: cess pip-in; for the two assemblies with different heats ,ith accepta' ale i= pact preperties. Results of this test'.n; and corractive action will be provided in the final report by ::ay 1,1930. [Ri?['hb b d mL iomm i, m. - , m m u J J

      ==a.

77 . . , , ,,

                                      .~;**T., -        -- --               -

m

             ,                                       ,                                www  -}}