ML20071E599
| ML20071E599 | |
| Person / Time | |
|---|---|
| Site: | Midland |
| Issue date: | 02/28/1983 |
| From: | Jackie Cook CONSUMERS ENERGY CO. (FORMERLY CONSUMERS POWER CO.) |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| REF-PT21-83 10CFR-050.55E, 10CFR-50.55E, 82-06-#4, 82-6-#4, NUDOCS 8303100310 | |
| Download: ML20071E599 (2) | |
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c and Construction General offices: 1945 West Parnall Road, Jackson, MI 49201 + (517) 788-0453 February 28, 1983 82-06 #4 Mr J G Keppler, Regional Administrator US Nuclear Regulatory Commission Region III 799 Roosevelt Road Glen Ellyn,_IL 60137 MIDLAND NUCLEAR COCENERATION PLANT DOCKET NOS 50-329 AND 50-330 B&W STEAM GENERATOR AUXILIARY FEEDWATER HEADER DESIGN CHANGE FILE:
0.4.9.62, 0505.2 SERIAL:
20720
References:
J W Cook letters to J G Keppler, Same
Subject:
(1) Serial 17504, dated May 26, 1982 (2) Serial 17560, dated August 6, 1982 (3) Serial 19403, dated November 1, 1982 This letter provides another 50.55(e) report concerning the B&W steam generator auxiliary feedwater header.
The installation of the external header at Midland is proceeding. The internal headers have been stabilized and on Unit 2 the header is in place awaiting rt.e welding of the two sections.
Since the last report, B&W has submitted a preliminary Part 21 report on the equipment supplied from a non-approved vendor. Attached is a copy of this report. The equipment which has been supplied for Midland is under evaluation. The 600 pound RF/WN flanges will be replaced.
The flanges that were provided by Tube Line Corp have been returned to B&W and are no longer at the site. The end caps and tees are being evaluated and material samples will be taken shortly.
B&W has confirmed with reasonable assurance that sufficient controls existed at Tube Line Corp such that the material in the plants is of the heat indicated on the material certifications. The material samples taken from Midland will be matched to the heat numbers by chemical analysis.
One sample of each of the heats has been tested at B&W's Barberton, Ohio plant as discussed in the attached letter. The material for Midland will be recertified in accordance with the ASME Code, paragraph NCA-3867.4, subparagraph (e).
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. 1 Serial 20720 82-06 #4 Another report, either interim or final, will be issued on or before May 31, 1983.
JWC/DTP/lr
Attachment:
B&W (J H Taylor) letter to NRC (R C DeYoung), dated January 10, 1983, Part 21 Report CC: Document Control Desk, NRC Washington, DC RJCook, NRC Resident Inspector Midland Nuclear Plant CBechhoefer, ASLB Panel FPCowan, ASLB Panel JHarbour, ASLB Panel AS&L Appeal Panel MMCherry, Esq MSinclair BStamiris CRStephens, USNRC WDPaton, Esq, USNRC FJKelley, Esq, Attorney General SHrreeman, Esq, Asst Attorney General WHMarshall GJMerritt, Esq, TNK&J JRajan, USNRC RHernan, USNRC (2)
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Mr. R. C. DeYoung, Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D.C. '20555
Dear Mr. DeYoung:
This letter provides an initial, Part 21 repcrt of a potential safety i
concern B&W has under evaluation.
The letter alsc confirms and in certain areas
. supplements a telephone report made by B&W to Mr. George Lanik on January 7,1982.
i The concern is that fittings supplied for use in piping for auxiliary feedwate;-
j (AFW) systems at certain B&W designed plants were provided from a source not approved as a nuclear equipment supplier.
The fittings were provided to B&W through Capitol Pipe and Steel. Products Co. of Bala Cynwyd, Pennsylvania by Tube Line Corporation.
They have been used j
in the construction of the new auxiliary feed headers on steam generators at j
Duke Power Company's Oconee 3 plant and Toledo Edison Company't Davis Besse 1 1
plant.
They are also being used in auxiliary feedwater headers on steam generators presently being installed at Consumers Power Company's Midland 1 & 2 plants.
The specific fittings can be identified as follows:
j B&W Contract 600-5293-50-10 i
B&W Purchase Order No. 631249JT - Item 2 - 20 pcs. 6" S/80 Caps SA,234 WPB, Heat #NDUC
, B&W Purchase Order No.- 631252JT - Item 1 - 10 pc,s. 6" S/80 Tees i
SA 234 WPB, Heat #NDLG B&W Purchase Order No. 631250JT - Item 1 - 80 pcs 3" 600# RF/WN Flanges SA 105, Heat #'s EKP & EUUA The material was shipped to B&W through Capitol Pipe by Tube Lin'e Corporation from their Houston, Texas facility, an unapproved nuclear source.
Specifically this facility has not teen audited and approved to supply fittings for nuclear i
use by the ASME, Capitol Pipe or S&W under the requirements of ASME Section III, NCA 3300.
Capitol Pipe has advised us that Tube Line Corp. ooes have a nuclear approved facility in Long Island City, New York.
That approval is based on an audit by Capitol Pipe of the Long Island City plant.
The material certifications actually provided by Tube Line for the fittings at issue indicated that they were manufactured at the Long Island City facility, when in fact they were not.
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Tube Line Corp. purchased the caps, tees and base flange forgings from three different scpplicrs.
The only actual work done on these fittings by Tube Line was the fir.ished machining of the flanges.
The material certification data on the fittings was provided by the Tube Line suppliers with the informatior!
i being transferred to Tube Line fanns prior to transmittal.
B&W has reviewed these material data and has concluded that the as-furnished l
material ~ certifications met the purchase specification.
Because the pieces were shipped from an unapproved source, B&W and Capitol Pipe will attempt to confirm i
with the Tube Line Corp. suppliers the validity of the material certification l
l data and will attempt to establish that sufficient controls were present during processing to conclude that the material in the plants are of.the heats indicated.
i B&W has also initiated destructive testing to confirm acceptable wall thicknesses and to confirm the physical and chemical data in these material certifications.
One sample from eacn of the four heats has been tested from material presently on-hand at our Barberton, Ohio plant.
The end caps and tees
- . have been shown to be in accordance with the chemical and physical data reportet on the material certifications.
The test results for the two heats of 3" flange "i
material show that one heat is lower in manganese and that both heats exhibit lcwer strength than reported Two additional flanges from each heat are being destructively evaluated.
A review of the applicable stress analysis with lower material strength j
flanges is currently underway.
As a further check, B&W is re-examining the results of field radiographic tests by Duke of the Oconee 3 headers and similar' shop tests done in our l
Barberton, Ohio plant of the Davis Besse 1 headers.
The purpose of this re-examination is to confirm the absence of indications in the base metal adiacent to the welds.
It is also noted that the AFW headers at Oconee 3 and DB-1 containing these fittings have been successfully pressure tested prior to operation.
In addition 3
the AFW systems were full flow tested with no apparent leakage.
I It is B&W's understanding that Capitol Pipe & Steel Products Co. provided on December 6,1982, to Mr. Ronald C. Haynes, of the NRC, Region I Office of i
Inspection and Enforcement in King of Prussia, Pennsylvania written information cn this concern.
B&W has notified the affected plants of this concern and is keeping them l
infonned of the progress of our evaluations.
B&W will provide its next report on this concern as soon'as 'significant new information is available.
If you have any questions, please contact me or Mr. T. L. Baldwin (804) 385-2817 or 385-3214.
Very truly yours, i
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J. H.
aylor Manager, Licensing c
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cc: R. B. Borsum - Bethesda Office i
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