ML19347C867
| ML19347C867 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 02/02/1981 |
| From: | Robert Carlson NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Kemper J PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| References | |
| NUDOCS 8103100165 | |
| Download: ML19347C867 (1) | |
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UNITED STATES E.
NUCLEAR REGULATORY COMMISSION g
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REGION I
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631 PARK AVENUE
,o' KING OF PRUSSIA, PENNSYLVANIA 19406 Docket No. 50-352 0 2 FEri 9~33
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,! u.gQg2,70 Philadelphia Electric Company L
ATTN: Mr. John S. Kemper J
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Vice President A
Engineering and Research t
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2301 Market Street 4
Philadelphia, PA 19101 A
Gentlemen:
Subject:
ASME Bolts, Nuts and Studs, Obtained from Unapproved Sources Thank you for your letter, dated December 30, 1980, which forwarded a final report pursuant to 10 CFR 50.55(e) regarding the subject matter.
This matter will be reviewed during our next inspection.
Your cooperation with us is appreciated.
Sincerely, Y
n Robert T. Carlson, hief Reactor Construction and Engineering Support Branch cc:
V. S. Boyer, Senior Vice President, Nuclear Power g
8103100 l65
.o PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET P.O. BOX 8699 PHILADELPHIA. PA.19101 (215 841 4502 c.....'CE*REslOtNT v
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Mr. Boyce Grier, Director Office of Inspection and Enforecment, Region I United States Nuclear Regulatory Commission 631 Park Avenue King of Prussia, PA 19406
SUBJECT:
Final Significant Deficiency Report No. 16 ASME Bolts, Nuts and Studs, Obtained From Unapproved Sources Limerick Generating Station, Units 1 & 2 NRC Construction Permit No. CPPR-106, 107
REFERENCES:
a) Telecon of August 26, 1980 H.R. Walters (PECO) to R. McGaughy (NRC) b) Letter J.S.
Kemper (PECO) to B. Grier (NRC) dated September 25, 1980 FILE:
QUAL 2-10-2 (SDR #16)
Dear Mr. Grier:
Attached is our final report on the above subject deficiency which was previously reported to the USNRC per the references in accordance with 10CFR50.55(e).
If there are any questions on this matter we would be pleased to discuss them with you.
Sincerely,
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Attachment Copy to:
Director of Inspection and Enforcement United States Muclear Regulatory Commission Washington, D.C.
20555 J.P.
Durr - USNRC Resident Inspector, LGS f/DIO101f
FINAL SIGNITICANT DEFIC M CY REPORT NO. 16 ASME BOLTS, NUTS AND STUDS 03 TAME FROM UNAPPROVED SOURCES LIMERICK GENERATING STATION UNITS 1 AND'2 1
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Pm AmM ELECTRIC COMPANY DECEMBER, 1980 l
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TABLE OF CONTENTS 1.0 Introduction 2.0 I)escription of Problem 30 Analysis of Safety Implications h.0 Corrective Action Taken 50 Conclusions h
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SDR-16-2 I~
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P 1.0 Introduction Certain bolts, nuts, and studs have been furnished to the Limerick Jobsite for ASME service which did not comply with NA-3700 of ASME Section III, Winter, 1976.
In compliance with 10CFR 50 55(e), this Final Report is issued to describe the deficiency, analy=e the safety implications, and describe the corrective action taken.
This deficiency was first reported to the USNRC, Region I, via telecon on August 26, 1980. A written interim report was submitted on September 25,1980 which committed to this report by December 30, 1980.
2.0 Description of Problem The Limerick Project has been supplied ASME Section III bolts, nuts and studs by REC Corporation, New Rochelle, New York.
These bolting materials were procured by REC from material manufacturers that do not have quality assurance programs that have been approved by Bechtel.
Such approval is contingent upon either the material manufactaer holding a current ASME Quality System Certificate (Materials) or upon a satisfactory survey of the manufacturer by Bechtel.
Our interim report of September 25,1980 indicated that approximately 25,000 items were involved with 10% installed.
Our final' inventory indicates that 16,631 items are involved of which h92 were issued for installation (all for use at flanged joints). These items, all supplied by REC Corporation, came from the following material manufacturers or suppliers:
Allied International Shigayama and Co., Ltd.
Kurt Orban Co., Inc.
Wycoff Steel Republic Steel (Cleveland Plcat)
Colt Industries (Crucible Division) 3 & G Manufacturing Co., which was listed on our interim report, supplied material for use only in balance of plant systems. 3 and G material is acceptable for its intended use. IN *4 Marusi Nut Kyogyo Kumia, which was listed separately on our interim report, supplied material to Shigayama and Co. Ltd.
30 Analysis of Safety Implications Because of the large number of bolts involved and the large number of applications where they were used or could have been used it is not feasible to hypothesize and analyze individual applications regarding safety implications.
It may be stated in general that the confidence level in this bolti=g is lessened due to a lack of proper review of the QA program under which they were =anufactures Had this condition gone undetected safety could have been compromised in the event of bolting failure.
SDR-16-3
h.O Correctivs Action Taken The eight Non-Confomance Reports mentioned in our interim report of September 25, 1980 were dispositioned as follows:
The NCR dealing with 3 and G was dispositioned to use B and G materials in balance of plant applications as they meet specification requirements for these applications.
The other seven NCR's were dispositioned to return all. non-confoming items to REC.
All flaD6es that have been made up and accepted by QC to date will be reviewed for heat numbers relating to the above unacceptable material manufacturers supplied by REC. All unacceptable bolting material identified will be replaced.
Further, a list of unacceptable bolting heat numbers will be provided to QC with the requirement that unacceptable bolting be rejected where they occur in ASME joints which have been made up but have not Jet received QC acceptance. This procedure will insure that all unacceptable bolting is replaced with material approved for use in ASME applications.
In order to preclude recurrence of this or related problems Limerick Field personnel, who are responsible for procurement, have been reindoctrinated regarding mandatory requirements for materials which are to be used in ASME applications.
5.0 Conclusions The corrective actions described above will correct and eliminate the problem related to ASME bolts, nuts and studs obtained from unapproved sources.
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