ML19210E157
| ML19210E157 | |
| Person / Time | |
|---|---|
| Site: | South Texas  |
| Issue date: | 10/19/1979 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| Shared Package | |
| ML19210E156 | List: |
| References | |
| 50-498-79-15, 50-499-79-15, NUDOCS 7911300616 | |
| Download: ML19210E157 (1) | |
Text
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Docket No. 50-498 50-499 Appendix A NOTICE OF VIOLATION Based on the results of the NRC inspection conducted during the period of September 1979 it appears that certain of your activities were not conducted in full compliance with the conditions of your NRC Construction Permit No. CPPR-129 as indicated below:
Failure to Follow Concrete Consolidation Procedure Criterion V of 10 CFR 50, Appendix B requires that activities affecting quality shall be accomplished in accordance with instruction, procedures or drawings.
The Brown & Root (B&R) QA Construction Procedure CCP-4, Rev'.sion 10, Section 3.5, " Consolidation," paragraph 3.5.4 states in part, "When concrete is applied in successive layers, vibrators must penetrate completely through the upper layer and at least six inches into the next lower plastic layer to ensure thorough bonding."
Contrary to the above:
On September 17, 1979, the Resident Inspector observed, that during place-ment of Pour No. CS2-W7 in the Reactor Containment Building, one of seven vibrator personnel was not vibrating the concrete properly at Az 160 -
165, in that, the vibrator did not penetrate completely through the upper layer and at least six i.iches into the next lower plastic layer to ensure thorough bonding. The Resident Inspector called this to the attention of a Brown and Root Inspector (roving).
He agreed that the consolidation was improper and directed that this area be revibrated.
This is an infraction.
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