ML20196A090
| ML20196A090 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 06/17/1988 |
| From: | Warnick R NRC OFFICE OF SPECIAL PROJECTS |
| To: | |
| Shared Package | |
| ML20196A052 | List: |
| References | |
| 50-445-88-36, 50-446-88-31, NUDOCS 8806290445 | |
| Download: ML20196A090 (2) | |
Text
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i APPENDIX A l
NOTICE OF VIOLATION TU Electric Dockets:
50-445/88-36 50-446/88-31 l
Comanche Peak Steam Electric Station Permits:
CPPR-126 Units 1 and 2, Glen Rose, Texas CPPR-127 During an NRC inspection conducted on May 4 through June 7,
- 1988, one violation of NRC requirements was identified.
In accordance with the "General Statement of Policy and Procedure for NRC Enforcement Actions," 10 CFR Part 2, Appendix C (1988), the violation is listed below:
A.
Criterion V of Appendix B to 10 CFR Part 50, as implemented by Section 5.0, Revision 0, of the TU Electric Quality Assurance Manual dated February 1, 1988, requires that activities affecting quality shall be prescribed by and accomplished in accordanca with documented instructions, procedures, or drawings.
TU Electric Specification 2323-SS-30, "Structural Embedments,"
Revision 3, Appendix A, Section 4.3, dated August 3, 1987, requires that Hilti expansion bolts be of sufficient length to provide length below the attachment equal to the thickness of grout topping in addition to the required embedment.
In addition, a topping thickness of two inches shall be used.
Drawing 2323-S-0910, Sheet G-4a, Revision CP-01, requires a minimum embedment length of two inches for 3/8 inch diameter Hilti expansion bolts.
This drawing further specifies that the minimum embedmont lengths are into structural concrete.
Contrary to the above, two 3/8 inch diameter Hilti bolts used for Conduit Support CO2012055-07 and installed through grout topping of undetermined thickness on a concrete pedestal, did not have the required embedmont lengths.
The bolts extend into the combination of grout topping and structural concrete approximately 2 inches, therefore, the as-built embedments (2 inches minus the thickness of the grout) are much less than the required embedmonts of 2 inches into structural concrete.
(similar conditions could exist in other areas, when grout topping on concrete pedestals is not well documented, and may not be limited to conduit supports.)
8806270445 880617 PDR ADOCK 05000445 G
l l
1 1
This is a Severity Level IV violation (Supplement II)
(445/8836-V-01).
Pursuant to the provisions of 10 CFR 2.201, TU Electric is hereby required to submit a writ'en statement or explanation to the U. S.
l Nuclear Regulatory Commis lon, ATTN: Document Control Desk, Washington, DC, 20555, with a copy to the Assistant Director for Inspection Programs, Comanche Peak Project Division, Office of Special Projects, within 30 days of the date of the letter i
transmitting this Notice.
This reply should be clearly marked as a "Reply to a Notice of Violation" and should include for each violation:
(1) the reason for the violation if admitted, (2) the corrective steps that have been taken and the results achieved, (3) the corrective steps that will be taken to avoid further violations, and (4) the date when full compliance will be achieved.
If an adequate reply is not received within the time specified in this Notice, an order may be issued to show cause why the license should not be modified, suspended, or revoked or why such other action as may be proper should not be taken.
Where good cause is shown, consideration will be given to extending the response time.
FOR THE NUCLEAR REGULATORY COMMISSION RF&an~A Dated at Comanche Peak Site this 17th day of June 1988
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