ML20197H199

Part 21 Rept Re Hilti Fastening Sys Anchor Bolts Failing to Meet Average Ultimate Tensile Loads.Initially Reported on 860509.Design Review & Resolutions of Installed Items Underway

ML20197H199
Person / Time
Site:	Susquehanna
Issue date:	05/09/1986
From:	Pompe R DRAVO ENGINEERS & CONSTRUCTORS
To:	Strosnider J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
REF-PT21-86, REF-PT21-86-149-000 PT21-86-149, PT21-86-149-000, NUDOCS 8605190084
Download: ML20197H199 (5)

Text

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• DRAVO CONSTRUCTORS,INC.

210 sixth Avenue RAYMOND J. POMPE Pittsburgh, Pennsylvania 15222 Senor Vce President 412 566-4584 Telex: 442-3098 DCIUS Constructen A Dravo Company May 9, 1986 United States Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, PA 19406 Attn: Mr. Jack Strosnider

SUBJECT:

Code of Federal Regulations Part 21 Reportable Item

Dear Mr. Strosnider:

Pursuant to the requirements of 10-CFR-21, and as a follow-up to our telephone conversation on May 9,1986, I have attached tia written report detailing the condition initially reported by the above tele-phone conversation.

If you have any questions or require additional infonnation concerning this matter, please advise.

Very truly yours, i

kbOnW \

R. J. Pompe 8

RJP/RCB:mac c.c. R. Alvarado A. C. Purcell l I

8605190084 m g9 gDR ADOCK 05000387 PDR orav"5 l

RDN-1 Rev. O Page 1 of 3 Date:

APPENDIX IV REPORT OF NONCONFORMANCE OR DEFECT UNDER 10 CFR PART 21 Evaluation Number: 5021-002 Date: 5/9/86 To  : Director, Office of Inspection and Enforcement United States Nuclear Regulatory Commission Washington, D.C. 20555 From: Senior Vice President, Construction Dravo Constructors, Inc.

Two Pennsylvania Plaza New York, N.Y. 10121 Facility Name and Location: Susquehann'a Steam Electric Station Berwick, Luzerne County, PA Licensee: Pennsylvania Power & Light Co.

Docket Number: 50-387 and 50-388 Date: 4/71  ;

i License Type: Operating Date: 7/17/82 and 3/23/84 Constructor: (If Applicable) Dravo Constructors, Inc.

Construction Subcontractor: (If Applicable) N/A Component Vendor: (If Applicable) Hilti Fastening Systems Component Subvendor: (!f Applicable) N/A Organization Responsible for Design: (If pplicable)

Gibbs & Hill, Inc.

RDN-1 Rev. O Page 2 of 3 Date:

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APPENDIX IV l

Description of Failure to Comply or Defect:

Anchor Bolts supplied by' Hilti Fastening Systems do not meet average ultimate tensile loads in ,certain sizes as published in "Hilti Architects and Engineer-ing Anchor and Fastener Design Manual." Design calculations based upon the published values could be below the acceptable loads required for specific designed items.

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Date Information Obtained:

Initial Notification - 4/28/86 QA Manager Notification - 4/30/86 Responsible officer Notification - 5/9/86 Description of Safety Hazard: I Design calculations for ultimate tensile loads based upon values established in the "Hilti Architect and Engineers Anchor and Fastener Design Manual" may result in lower actual values than permitted for the design requirements.

Defective Basic Component' Numbe--

-In use: 1143 installed as of 3/31/86 Susquehanna Steam Electric Station At: Emergency Diesel Generator E Facility Berwick, Luzerne County, PA

-Supplied for Use: Information not available until supplied items are dedicated for specific purposes At: 1.e. embedment length specified

-on order: Information not available until ordered items are dedicated for specific purposes.

For. i.e. specified erbedment length.

Other Facilities: This item is used in most nuclear power facilities

. throughout the United States and other countries.

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D RDN-1 Rev. 0 Page 3 of 3 Date:

~ APPENDIX IV

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Corrective Ar. tion 53y:

Organization - Gibbs 'a Hill, Inc. '- Design review of all items installed using Hilti Bolts not meeting the catalog test values and Individual - providing resolutions .to the constructor ano the owner.

Dravo Constructors, Inc. implement design resolutions.

Corrective Action Dates:

Corrective ac'ticn currently'in progress.

(If obtainable)

Advice to Purchaser or Licensee:. .

HiltiFasteningSyste$s,Inc.shouldevaluatethevaluespublishedintheir Design Manual to ensure the values are correct. Licensees should be advised to nerform vefification tests to assure actual design conditions based upon thecatalogvaluesareacceptab) for their project requirements.

i Dravo CQ11structors, Inc.

dln& $ fff& Date Senior Vice President - Construction

- (Designated Responsible Officer) s t

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