ML20198D492

Partially Withheld Assessment of Allegation AQ-40 to Allegation Category Qa/Qc 5E, Matls Re Heat Numbers for Matls Used in safety-related Applications Obtained Inappropriately

ML20198D492
Person / Time
Site:	Comanche Peak
Issue date:	06/07/1985
From:	Livermore H, Watson V NRC, NRC - COMANCHE PEAK PROJECT (TECHNICAL REVIEW TEAM)
To:
Shared Package
ML20198C597	List: IA-85-517, Partially Withheld Assessment of Allegation AQE-41 to Allegation Category Qa/Qc 6, QC Insp Re Worn Gauges Used to Calibr Lighting Restraint Cable Tools Resulting in Incorrect Installation & Issuance of Nonconformance Rept ML20198C594 ML20198C616 ML20198C640 ML20198C704 ML20198C711 ML20198C794 ML20198C831 ML20198C859 ML20198C871 ML20198C883 ML20198C897 ML20198C933 ML20198C974 ML20198D040 ML20198D103 ML20198D141 ML20198D170 ML20198D231 ML20198D267 ML20198D290 ML20198D314 ML20198D348 ML20198D373 ML20198D377 ML20198D391 ML20198D411 ML20198D419 ML20198D424 ML20198D427 ML20198D432 ML20198D437 ML20198D445 ML20198D450 ML20198D460 ML20198D471 ML20198D479 ML20198D487 ML20198D492 ML20198D507 ML20198D510 ML20198D523 ML20198D529 ML20198D534 ML20198D545 ML20198D554 ML20198D559 ML20198D565 ML20198D576 ML20198D585 ... further results
References
FOIA-85-59, FOIA-85-89 NUDOCS 8605230303
Download: ML20198D492 (2)

Text

1. Allegation Category: QA/QC SE, Materials

2. Allegation Number: AQ-40

3. Characterization: It is alleged that heat numbers for materials used in safety-related applications were obtained inappropriately in the field.

4. Assessment of Safety Significance: In assessing this allegation, the NRC Technical Review Team (TRT) reviewed the Brown & Root (B&R) quality assur-ance manual and procedures addressing material traceability and interviewed inspection personnel. With the exception of color-coded material, the TRT found no evidence to indicate that material heat numbers were being assigned in the field. Texas Utilities Electric Company (TUEC) used a color coding system to maintain heat number traceability for tubing material. Over the course of plant construction, the colors of the various paints which were compatible with nuclear stainless steel tubing were depleted. TUEC then assessed the feasibility of using the same paint colors to denote different materials requiring traceability. The engineering personnel made a deci-sion on December 19, 1983, to use green to identify tubing for heat number M7632, even though green had previously been used to denote tubing heat number 402095. The Comanche Peak Steam Electric Station (CPSES) quality assurance (QA) manager had extensive material testing conducted on heat number M7632 to assure its conformance to specification and its intended use. This testing was done to prevent the use of any nonconforming material.

CPSES engineering acknowledged that if either heat number 402095 or M7632 was identified later as defective, both heats of material would have to be removed from the facility. Neither of these material heats are code mate-rials as defined in Paragraph 41, Table 17A-1, Amendment 50 of the CPSES Final Safety Analysis Report.

The TRT found that CPSES had a material control system consisting of card files and/or computer printouts containing material heat numbers and detailed material descriptions. These card files and/or computer print-l outs were available in many locations throughout the plant, such as in the permanent plant record vault, material warehouse, receiving inspection office, pipe fabrication shop, iron fabrication shop, and the quality engineering offices. When it was necessary to verify or obtain a heat number or material description of any material in question, the requester could call any of these locations. The heat numbers of tubing material were ascertained by observing the color code on the tubing. This color code was painted on the tubing by receiving inspection personnel after

! their final material acceptance and after they measured the tubing. Using l

the color code information, the requester could, for example, check drawing number FSC-00075, Revision 6, and component modification card number 96165 R2, to obtain the heat number. This method of obtaining heat numbers for color-coded tubing is acceptable. The TRT noted that none of the in-spectors interviewed were aware of any abuse in the material control procedures.

5. Conclusion and Staff Positions: The TRT concludes that this allegation could not be substantiated.

k 0-197 l

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.5 In a meeting with the alleger on December 10, 1984, the TRT presented the results of the assessment of the allegation and the TRT's conclusion.

Although the alleger was not wholly satisfied with the conclusion reached, the TRT has no further technical concerns regarding the resolution of this allegation.

6

7. Attachments: None.

Reference Documents:

1. Southwestern Laboratories, file number 2-8487-01.

2. Report 84376 for tubing, heat number M7632, dated June 29, 1984.

3. Statement of interview by TRT technical reviewer, 10:45 a.m. on August 7, 1984.

4. Interview with A-5 on August 1, 1984, pages 8, 9, and 47-50.

5. GAP letter, dated March 19, 1984.

6. Meeting with A-5, December 10, 1984, pages 107-110.

8. This statement prepared by: h_ b % W. UNm (,[ro/Pi V. Watson, TRT D'at6 Technical Reviewer Reviewed by: ci b 7- k5-H. Livermore, Date Group Leader Approved by:

V. Noonan, Date Project Director 0-198

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