ML20216C802

Notice of Violation from Insp on 870518-21 & 0608-11. Violations Noted:Failure to Provide Adequate Design Change Control & Use Correct Procedure to Install Bolts

ML20216C802
Person / Time
Site:	South Texas
Issue date:	06/22/1987
From:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:
Shared Package
ML20216C763	List: ML20216C760 ML20216C802
References
50-498-87-27, NUDOCS 8706300369
Download: ML20216C802 (2)

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t APPENDIX )

NOTICE OF VIOLATION Houston- Lighting & Power Company Docket: 50-498 South Texas Project, Unit 1 Permit: CPPR-128 i

During an NRC'insp6ction conducted on May 18-21 and June 8-11, 1987, violations )

of NRC requirements were identified. The violations involved improperly i' torqued bolts and an inadequate calculation for weld size on the Residual Heat Removal (RHR) pump support assemblies. In accordance with the " General Statement of Policy and Procedure for NRC Enforcement Actions," 10 CFR Part 2, Appendix C (1987), the violations are listed below:

A. Failure to Provide Adequate Design Change Control Criterion VI of Appendix B to 10 CFR 50 requires that measures be established to control the issuance of documents such as drawings, including changes thereto, and that these measures shall assure that documents, including changes, are reviewed for adequacy and approved for release by authorized personnel and are distributed to and used at the location where the prescribed activity is performed. ]

Contrary to the above,-a design change notice (Brown & Root DCN No.1-S-1600-1) . issued in 1980, but never implemented, was erroneously incorporated into Bechtel design drawing No. 3C01-9-S-1600 and Bechtel calculation No. 20011SC045, "RHR Pump Support Pedestal." As a result of i this erroneous incorporation, both the_Bechtel drawing and calculation j indicated a 1/2-inch weld on the column to base plate connection while the )

actual as-built condition was a 5/16-inch weld. ] ,

This is a Severity' Level IV violation. (SupplementII)(498/8727-02)

B. Failure to Use Correct Procedure for Installation of Bolts Criterion V of Appendix B to 10 CFR 50 requires that activities affecting quality be prescribed by documented instructions or procedures, and shall be accomplished in accordance with these procedures. Bechtel Construction i Specification No. 3A010SS0030, Revision 8. " Specification for Erection of I Structural Steel and Miscellaneous Steel " Section 7.1.1.4, requires that high-strength bolts be installed in accordance with the American Institute of Steel Construction (AISC) " Specification for Structural Joints Using ASTM A325 or A490 Bolts." Section 5 of the AISC specification requires l that fasteners be tightened to provide, when all fasteners in the joint l are tight, at least the minimum tension of 39,000 pounds for 7/8-inch j diameter A325 bolts.

Contrary to the above, the NRC inspector independently measured the tension for 12 randomly selected 7/8-inch diameter A325 bolts on each of the three Residual Heat Removal (RHR) pump support structures and found that the tension was less than the required value of 39,000 pounds for one ,

B706300369 870622 PDR ADDCK 05000498 G PLtR

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t bolt on RHR pump' A and for- six bolts on RHR pump C. All three RHR pump-support structures had'been. inspected by' Quality Control.. -

This'is aiseverity;1evel.IV violation. (SupplementII)-(498/8727-03)'

.I Pursuant:to the provisions of 10 CFR 2.201, Houston Lighting & Power' Company is  !

.hereby required to submit to this office within 30 days of-the date of the .l letter transmitting this Notice, a written statement or explanation in reply,- "

including for'each violation: (1) the rear,on for the violations if ~ admitted. .

.the corrective steps which have been taken and the' results achieved, l the corrective steps which will'be-taken to avoid further violations, and 1 the date when full compliance will:be achieved. Where.

consideration'will be given to extending the response time. good cause is shown, Dated at Arlington, Texas l 1 this 22nd day of ' June 1987  !

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