ML19347E423

Final Deficiency Rept Re Matl Control of Structural Steel Bolts,Initially Reported 800617.Stop Work Order Issued & Comprehensive Matl Documentation Review Initiated

ML19347E423
Person / Time
Site:	South Texas
Issue date:	04/16/1981
From:	Oprea G HOUSTON LIGHTING & POWER CO.
To:	Seyfrit K NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
References
10CFR-050.55E, 10CFR-50.55E, ST-HL-AE-655, NUDOCS 8104270327
Download: ML19347E423 (7)

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The Light Company s-st- ug% ~ m a.,x noo a-si .wxas moumms <im April 16,1981 ST-HL-AE-655 SFN: V-0530 l Mr. Karl Seyfrit / 8

[ Director, Region IV Nuclear Regulatory Comission

[9f 2g i 1 hC.

l 611 Ryan Plaza Drive, Suite 1000 {3u,A[g'9

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' k ree,A g n%

Arlington, Texas 76012

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Dear Mr. Seyfrit:

M South Texas Project Units 1&2 Docket Nos. STN 50-498, STN 50-499 Final Report on M cerial Control of Structural Steel Bolts l On June 17, 1980, in accordance with 10CFR50.55(e), Houston Lighting &

Power notified your office of an item concerning the material control of ASTM-A325 structural steel bolts. As a result of the investigations con-cerning material control of ASTM-A325 structural steel bolts, the similarly related ASTM-A490 structural steel bolts were also included in this investi-gation since many of these bolts,were purchased on the same purchase orders as ASTM-A325 bolts. Subsequently, on January 20,1981, Houston Lighting &

Power Company notified your office that all future reports concerning this item would address both ASTM-A325 and A490 structural steel bolts. The final report on this item is attached.

l If you have any questions, please contact Mr. Michael E. Powell at i

(713)676-8592. ,

l Very truly yours, l

. Y l Exe ive resident RRH/ par l

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s .1, t

810.4270 39 g

1 Houston Lighting & Power Company April 16, 1981 ST-HL-AE-655 cc: J. H. Goldberg SFN: V-0530 D. G. Barker Page 2 C. G. Robertson Howard Pyle R. L. Waldrop H. R. Dean D. R. Beeth J. D. Parsons L. K. English J. W. Briskin R. A. Frazar STP RMS H. S. Phillips (NRC)

J. O. Read (Read-Poland,Inc.)

M. D. Schwarz (Baker & Botts)

R. Gordon Gooch (Baker & Botts)

J. R. Newman (Lowenstein, Newman, Reis, & Axelrad)

D'irector, Office of Inspection & Enforcement Nuclear Regulatory Commission Washington, D. C. 20555 M. L. Borchelt Charles Bechhoefer, Esquire President Chairman, Atomic Safety & Licensing Board Central Power & Light Company U. S. Nuclear Regu?atory Commission P. O. Box 2121 Washington, D. C. 20555 Corpus Christi, Texas 78403 R. L. Range Dr. James C. Lamb, III Central Power & Light 313 Woodhaven Road P. O. Box 2121 Chapel Hill, North Carolina 27514 Corpus Christi, Texas 78403 R. L. Hancock Mr. Ernest E. Hill Director of Electrical Utilities Lawrence Livermore Laboratory City of Austin University of California P. O. Box 1088 P. O. Box 808, L-123 Austin, Texas 78767 Livermore, California 194550 T. H. Muehlenbeck Citizens for Equitable Utilities, Inc.

City of Austin c/o Ms. Peggy Buchorn P. O. Box 1088 Route 1, Box 1684 Austin, Texas 78767 Brazoria, Texas 77422 J. B. Peston Pat Coy Assistant General Manager of Operations Citizens Concerned About Nuclear Power City Public Service Board 5106 Casa Oro P. O. Box 1771 San Antonio, Texas 78233 San Antonio, Texas 78296 A. vonRosenberg Lanny Sinkin City Public Service Board 2207-0, Nueces P. O. Box 1771 Austin, Texas 78705 San Antonio, Texas 78296 Brian E. Berwick, Esquire Bernard M. Bordenick, Esquire Assistant Attorney for the State of Texas Hearing Attorney P. O. Box 12548 Office of the Executive Legal Director Capitol Station V. S. Nuclear Regulatory Connission Washington, D. C. 20555 4-3-81 Austin, Texas 78711

FINAL REPORT CONCERNING MATERIAL CONTROL OF STRUCTURAL STEEL BOLTS I. Summary On June 17, 1980 Houston Lighting & Power in accordance with the requirements of 10CFR50.55(e), notified the NRC of an item concerning the control of ASTM A325 structural steel bolts. The

, improper segration of Category I and Non-Category I structural steel bolts in the field had allowed bolts purchased to a Non-Category I specification to be installed in Category I structures, contrary to project requirements. This item of concern was later expanded to include ASTM A490 structural steel bolts.

Houston Lighting & Power directed Brown & Root to secure fron all Non-Category I bolt vendors documentation necessary to establish the quality of the supplied A325 and A490 structural steel bolts.

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Documentation received for bolts purchased for Non-Category I use does not in all cases conform to Category I quality assurance requirements as detailed in the project specifications. However, the vendors have provided quality statements regarding their manufacturing process and documentation that shows that the bolts supplied do comply with the respective ASTM standards.

Based on this information an engineering evaluation has been performed and determined that the A325 and A490 structural steel bolts installed will meet the intended design requirements for the l

South Texas Project. Therefore a "use-as-is" disposition has been approved.

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a II. Description of the Incident An investigation into the premature inventory shortage of Category I structural bolts revealed inadequate material control practices in effect and incomplete material traceability documentation for one Category I supplier. It was further identified that improper segregation of the Category I and Non-Category I A325 structeral bolts had allowed the use of Non-Category I bolts to be used in Category I applications. The South Texas Project Category I structural ' bolting is required by specification to be supplied with Certified Material Test Reports (CMTR's) while Non-Category I structural bolting is required to be supplied with a Certificate t

of Conformance (C of C).

On June 17, 1980, Houston Lighting & Power in accordance with 10CFR50.55(e) notified the NRC of this item of concern. In the fifth Interim Report (January 20,1981) Houston Lighting & Power expanded this item of concern to include A490 structural bolts.

III. Corrective Action A Stop Work Notice (SWN) was issued to halt the release of structural bolts for Category I applications until full material documentation could be established. Partial releases have been made for those structural bolts purchased under Category I Purchase Orders and meeting all material and quality requirements.

Rtquests for supplemental material documentation were made to the suppliers of structural bolting for the South Texas Project. In addition a comprehensive review of the material documentation for (2)

1 all A325 and A490 structural bolting was initiated. These cctions were taken in order to determine whether the necessary a

documentation could be obtained to qualify all structural bolts (A325 & A490) for Category I applications.

The material documentation review has been completed and the final results are as follows:

For Engineering Purchase Orders:

1. All structural bolts (A325 & A490) received under Engineering Purchase Orders have been documented as beino nanufactured in conformance with the respective ASTM A325 and A490 standards.

2. Bostrum-Bergen: all bolts supplied under these Category I Purchase Orders are fully documented as required by the specification.

3. American Bridge: all bolts supplied under these Category I Purchase Orders are fully documented as required by the specification.

4. Pittsburgh-Des Moines: all bolts supplied under these Category I Purchase Orders are fully documented as required by the specification.

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5. Mosher Steel: supplied structural bolts (A325 & A490) under a Non-Category I specification. Documentation received consists of CMTR's and C of C's accompanied by a statement from the structural bolt supplier to the effect that all bolts were (3)

manufactured to the quality standards set forth by the respective ASTM standards.

6. Mississippi Valley: same as item five (5) above except for approximately 1,200 A325 bolts supplied to Mississippi Valley by Smith Industries. These bolts lack CMTR's but have been provided with a C of C and a quality statement.

For Field (Site) Purchase Orders.

. All structural bolts (A325 and A490) received under Field Purchase Orders have been documented as being manufactured in conformance with tha respective ASTM A325 and A490 standards except for three orders. One order involves bolts installed in Non-Category I service (River Makeup Pump Facility) and are, therefore, acceptable. Application of bolts from the second order was limited to the Unit 1 polar crane rail system. These bolts have been replaced as a result of our redesign of the polar crane rail system. Bolts from the third order were not used and have been shipped off-site.

IV. Recurrence Control i

A review of the material control procedure " General Construction Procedure-General Material Receiving and Storage" has determined that adequate procedural requirements are provided to preclude the improper issuance or handling of structural bolts. The review further identified that these procedural requirements were not thoroughly followed. As stated previously in the third Interim Report (September 23,1980) warehouse personnel have been directed

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not to issue material unless requisitions are properly completed.

Requisition completion is now to additionally include a material control authorized signature. Also, all warehouse personrel have received formal training on proper preparation of naterial requisitions to avoid acceptance and/or processing of .naterial requisitions which have not been properly prepared.

In order to provide recurrence control, all Non-Category I structural bolts which have not been installed are being removed from the South Texas Project site. All structural steel for Category I and Non-Category I structures will utilize structural steel bolts purchased to Category I requirements.

V. Safety Evaluation As the result of an Engineering evaluation of available documentation on the A325 and A490 bolts and their various applications at the South Texas Project, HL&P has determined that l

the bolts currently in use at STP are suitable for Category I l ,

application. Documentation for bolts purchased for Non-Category I use does not in all cases meet quality assurance requirements set forth in the project specification. However, because the bolts are manufactured to the respective ASTM standard and suppliers have provided quality statements regarding their manufacturing l

processes, acceptance of the bolts for Category I application is acceptable. Accordingly, our evaluation demonstrates that this disposition would not represent a significant safety hazard.

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