TXX-2998, Responds to NRC Re Violation Noted in IE Insp Repts 50-445/79-11 & 50-446/79-11.Corrective Actions: Consultant Retained to Evaluate Inplace Condition of Portion of Dome Altered W/O QA Knowledge
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Mr. W. C. Seidle, Chief Reactor Construction and Engineering Support Branch U. S. Nuclear Regulatory Commission Office of Inspection & Enforcement 611 Ryan Plaza Dr., Suite 1000 Docket Nos. 50-445/Rpt. 79-11 Arlington, Texas 76012 50-446/Rpt. 79-11 COMANCHE PEAK STEAM ELECTRIC STATION 1981-83 2300 MW INSTALLATION RESPONSE TO NRC INSPECTION REPORT NO. 79-11 DOCKET NOS. 50-445 & 50-446 FILE NO. 10130
Dear Mr. Seidle:
We have reviewed the report dated May 14, 1979 relative to the inspection conducted by Messrs. R. G. Taylor and other members of your staff, of the activities authorized by NRC Construction Permit Nos. CPPR-126 and 127 for the Comanche Peak facility. We have responded to the finding listed in Appendix A of that report.
To aid in the understanding of our response, we have repeated the requirement and your finding followed by our corrective action (s).
We believe the attached information to be responsive to the Inspectors' finding.
If you have any questions, please advise.
Very truly yours, h
f R./J. Gary /
RJG:dla Attachment 04f;
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Inspection Report tio. 79-11 TXX-2998 Page 2 Appendix A fl0TICE OF VIOLATI0fl Based on the results of the fiRC investigation conducted during the periods April 2-3 and April 13-23, 1979, it appears that certain of your activities were not conducted in full compliance with the conditions of your flRC Construction Permit fio. CPPR-126 as indicated below:
Failure to Implement the Quality Assurance Program For Civil Construction 10 CFR 50, Appendix B, Criterion II requires that a quality assurance program be established and implemented for the construction of the structures important to safety of the nuclear plant. The Texas Utilities Generating Company Comanche Peak Steam Electric Station Quality Assurance Plan affirms the intention to fulfill this require-ment.
The CPSES " Civil Inspection Manual" provides a body of inspection and testing procedures required to implement the Quality Assurance Plan.
Contrary to the atove:
On January 18, 1973, personnel of the civil construction labor force placed an undetermined amount of concrete of an unknown quality on the dome of the Unit 1 containment without the knowledge of your Quality Assurance organizat'an and without benefit of required inspections and testing of the concrete.
This is an infraction.
Corrective Steps Which Have Been Taken And The Results Achieved TUSI Engineering has retained the services of an established Materials and Concrete Consultant for the purpose of evaluating the inplace condition of that portion of the dome in question.
The results of the Consultant's investigation and evaluation coupled with the Architect / Engineer's review of the investigation will be utilized to formulate required corrective action.
Corrective Steps Which Will Be Taken to Avoid Further fioncompliance_
Construction concrete supervisory personnel have been informed that if a similar situation occurs, no additional concrete shall be batched or placed without prior notification to senior construction management and suitable arrangements for implementation of the established quality control program.
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Inspection Report fio. 79-11 TXX-2998 Page 3 Date of Full Compliance Corrective actions were initiated on May 23, 1979.
The results of the Consultant's evaluation and A/E's review are scheduled for completion by September 3,1979.
Preventive measures were established verbally on April 17, 1979 with the personnel involved in the incident and extended to other personnel through supervisory meetings subsequent to that date.
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