ML20099M129

Interim Deficiency Rept 55-85-01 Re Substitution of AISI-1010 Carbon Steel All Thread Rod for ASTM A-36. Initially Reported on 850201.Investigation Plan Implemented to Include Review of Matl Spec/Tensile Requirements

ML20099M129
Person / Time
Site:	Clinton
Issue date:	02/28/1985
From:	Hall D ILLINOIS POWER CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
55-85-01, 55-85-1, U-10251, NUDOCS 8503210234
Download: ML20099M129 (3)

Text

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/LL/NOIS POWER COMPANY 1A.120

/P CLINTON POWER STATION. P.O. BOX 673 CLINTON. ILLINOIS 61727 U-10251 February 28, 1985 Docket No. 50-461 Mr. James G. Keppler Regional Administrator Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137

Subject:

Potential 10CFR50.55(e) Deficiency 55-85-01 Substitution of AISI-1010 Carbon Steel All Thread Rod for ASTM A-36

Dear Mr. Keppler:

On February 1, 1985, Illinois Power Company notified Mr. R.

Knop, NRC Region III (Ref. IP memorandum Y-26072 dated February 1, 1985) of a potentially reportable deficiency concerning the indeterminate quality of certain carbon steel all thread rod.

Our investigation of this issue is continuing, and this letter represents an interim report in accordance with the requirements of 10CFR50.55(e). Attachment A provides the details of our investigation to date.

We trust that this interim report provides you sufficient background information to perform a general assessment of this potentially reportable deficiency and adequately describes our overall approach to resolve this issue.

Sincerely yours, D. P. Hall Vice President RLC/lr (NRC2)

Attachment cc: NRC Resident Office Director, Office of I&E, US NRC, Washington, DC 20555 Illinois Department of Nuclear Safety INPO Records Center UER 0 p'r v#

9503210234 850228 gDR ADOCK 05000461 PDR h ' If>7

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4 ATTACHMENT A Illinois Power Company

'Clinton Power Station Docket No. 50-461 Potential 10CFR50.55(e) Deficiency 55-85-01 Substitution of.AISI-1010 Carbon Steel'

-All Thread Rod-for ASTM A-36 Interim Report-s

. Statement of Poten ially Reportable Deficiency / Background

-Baldwin-Associates (BA)~ Quality Engineering Procurement Department.has identified,a deficiency-with. threaded carbon steel rod,'the; quality of which is currently indeterminatef(ref.

Nonconformance Report-(NCR) No. 170456). -The identified

-deficiency involves vendor (Barr Saunders, Inc.)< supplied . .

AISI-1010 carbon steel threaded rod, 3/8" (HT'fHC0032) and 1/2" (HT fHC0148).in diameter. The AISI-1010 carbon steel rod was supplied by~the vendor _in lieu of ASTM A-36 which was specified on purchase order (PO), #C-30428. AISI-1010 carbon steel rod has lower-physical properties (tensile and yield strength) than A-36.

This' material has been utilized in safety-related electrical installations.

Investigation Results Illinois Power has prepared and-implemented an investigation 1 plan'to determine the extent of this deficiency at Clinton Power Station (CPS). The investigation plan included:

- 1. . A-review of the material specification / tensile requirements for AISI-1010 and ASTM A-36 material vas.

y ,

performed.

2. ~A review was performed by Baldwin Associates Resident Engineering (BARE) to identify the electrical installation details utilizing threaded rod, reference E05-1200, E05-1900 and E06-1000 Series Drawings.

'~

3. Identified installation details were provided to Sargent and 1. undy (S&I.) for evaluation of design requirements and assessment of the use of AISI-1010 rod in lieu of ASTM A-36 material.

4. The results of item #3 will be reviewed to determine the extent / nature of any further activities which may be required, eg.,-traveler review, additional evaluation of design requirements, and/or replacement of AISI-1010 threaded rod with ASTM A-36 material.

Page 1 of 2

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ATTACHMENT A (continued)

A review of purchase orders issued to Barr Saunders, Inc.

was performed and the following AISI carbon steel material was supplied in lieu of ASTM A-36 which was specified on the purchase order:

PO #C-33584 Qty Qty-Grade & Size Purchased on Hold AISI-1008' 1/4"x 6' (HT #39884) 10 0 AISI-1008 3/8"x 6' (HT #20845) 10 .0 AISI-1010 5/8"x 6' (HT #20929) 20 1 AISI-1010 3/4"x 6' .(HT fHC0652) 20 0 AISI-1010 1"x 6' (HT fHC0806) 20 12 AISI-1020 1 1/8"x 6',x7' (HT.f211239) 27 19(6')

-NOTE: The above material was purchased for the Millwright Department to be used in temporary installations only. The located material has been placed on hold per NCR No. 70771. The investiga-tion is continuing for the above material.

PO #C-32734 AISI-1010 3/8" (HT #SY1077)

AISI-1010 1/2" (HT fKC5964)

NOTE: Purchasing requisition 191261 specified that the grade of material was to be ASTM A-36, but PO

1. C-32734 did not specify the grade of material required other than carbon steel (ref. NCR No.

27243).

Complete corrective action needed to correct the specific problems and to eliminate the root causes(s) to preclude recurrence will be addressed after further background information

'is evaluated.

Safety Implications / Significance ,

Illinois Power's investigation of this potentially reportable deficiency is continuing. The safety implications and significance will be assessed after further background information has been evaluated. It is anticipated that approximately sixty (60) days will be required to complete our investigation, determine reportability and to file a final report on the issue.

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