ML18017B518

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Responds to NRC Re Violations Noted in IE Insp Repts 50-400/81-20,50-401/81-20,50-402/81-20 & 50-403/81-20. Corrective Actions:Load Rate During Compressive Testing of Concrete Cylinders Monitored & Technician Recertified
ML18017B518
Person / Time
Site: Harris  Duke Energy icon.png
Issue date: 11/17/1981
From: Banks H
CAROLINA POWER & LIGHT CO.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML18017B517 List:
References
NUDOCS 8112160292
Download: ML18017B518 (4)


Text

November 17, 1981

@MAL, Carolina Power & Ligh SQ yREG(og "

A t L.ADYTA GEOl<i, Bi NOV ZO Mr. James P. O'Reilly United States Nuclear Regulatory Commission Region XX 101 Marietta Street, Northwest Atlanta, Georgia 30303 no.)8

Dear Mr. O'Reilly:

In reference to your letter of October 16, 1981, referring to RXX:

JJL 50-400/401/402/403/81-20, the attached is Carolina Power

& Light Company's reply to the deficiency identified in Appendix A.

Xt is considered that the corrective and preventive actions taken will be satisfactory f'r'e-solution of this item.

To the best of my knowledge, information, and belief, the corrective action in this report is tr'ue and complete.

Thank you f'r your consider'ation in this matter.

Yours very truly, H. R. Banks Manager Corporate Quality Assurance NJC/lm Attachment cc:

Mr. J.

A. Jones r

t Sworn to and subscribed before me Bhis /1~ ~+ g

/744641000~1 Icily otary Publ c My commission expires:

Date

+411 Feyettevllle Street

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Severity Level VX Violation 10 CFR 50, Appendix B, Criterion V, as implemented by Carolina Power and Light PSAR Section 1.8.5.5, requires in part, "Activities affecting quality shall be prescribed by d'ocumented instructions, procedures or drawings,...

and shall be accomplished in accordance with these instructions, procedures or drawings."

Shearon Harris Specification CAR-SH-CH-6, "Concrete" requires that concrete compressive strength test cylinders be tested in accordance with ASTM C-39, ASTM C-39 requires that the rate of loading during testing of the concrete cylinders be applied within the range of 20 to 50 psi per second.

Contrary to the above, during testing of concrete cylinder numbers 7954A through 7956A, 7959A through 7962A,

7847B, and
7847C, the rate of loading was applied in the r ange of 125 to 175 psi per second.

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Denial or Admission and Reasons for Violation:

The violation is correct as stated.

The reason for the violation was due to a faulty control valve assembly on the compression machine and the failure of the operating technician to note the r ate of loading exceeded that prescribed by ASTM C-39.

Corrective Steps Taken and Results Achieved:

A replacement flow control valve was ordered on September 30, 1981.

Compressive testing of concrete cylinders continued but the load rate was continuously monitored l

and adjusted through the full load for each cylinder break.

The new flow control valve was installed on October 7,

1981.

The compressive testing machine was also recalibrated on October 13, 1981 and found to be satisfactory.

The Concrete Compressive Testing certification for the technician in question was rescinded on October 2, 1981 and retraining in the requirements of ASTM C-39 was started immediately.

The technician was recertified for Concrete Compressive Testing on October 7, 1981, after satisfac)orily demonstrating the testing technique and passing both wr itten and oral examination.

Corrective Steps Taken to Avoid Further Noncompliance:

Replacement of the faulty flow control valve and retraining the technician in question are considered adequate measures to avoid recurrences of this violation.

Date When Full Compliance Will Be Achieved:

Full compliance is considered to have been achieved on October 7, 1981, with the completion of retraining and recertification of the technician and installation of the new flow control valve.

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