ML20202E425

Comment on Draft RG DG-1070, Sampling Plans Used for Dedicating Simple Metallic Commercial Grade Items for Use in Npps. Draft RG Should Be Revised to Clarify That Alloy Analyzer Can Be Used Consistent W/Guidance in EPRI NP-5652

ML20202E425
Person / Time
Site:	Palo Verde
Issue date:	01/30/1998
From:	James M. Levine ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
FRN-62FR52166, RTR-REGGD-XX.XXX, TASK-*****, TASK-RE 102-04068-JML-S, 102-4068-JML-S, 62FR52166-00014, 62FR52166-14, NUDOCS 9802180142
Download: ML20202E425 (3)

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,t U. 8. Nuclear Regulatory Commission Document Control Desk Washington, DC 20555-0001 Attention: Rules and Directives Branch

Subject:

Palo Verde Nuclear Generating Station (PVN09)

Unita 1,2 and 3 Docket Nos. STN 50 52815291530 Comments on Draft Regulatory Guide DG 1070, " Sampling Plans used for Dedicating Simple Metallic Commercial Grade items for use in Nuclear Power Plants"

Dear Sirs:

J In the October 6,1997, Federal Rogister (62FR52166 and 62FR63738), the NRC solicited comments to Draft Regulatory Guide DG 1070, " Sampling Plans used for Dedicating Simple Metallio Commercial Grade items for use in Nuclear Power Plants,"

September 1997. APS has reviewed Draft Regulatory Guide DG 1070 and is providing comments in the enclosure.

Please contact Mr. Scott Bauer at (602) 393 5978 if you have any questions or would like additionalinformation regarding tnis matter.

Sincerely, y  %). I A-

/JMUSAB/RKR/mah j

Enclosure:

Comments on Draft Regulatory Guide DG-1070," Sampling Plans wed for Dedicating Simple Metallic Commercial Grade items for use In Nuclear Power Plar.ts"

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,3 ENCLOSURE Comments on Draft Regulatory Guide DG-1070,

" Sampling Plans used for Dedicating Simple Metallic Commercial Grade items for use in Nuclear Power Plants" g..

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.r Comments on Draft Reaulatorv Galde DG-1070. "Samoling Plant 3 sed _for  ;

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1. In Section 2, the second paragraph on page 7 appears to preclude the use of an alloy analyzer for verifying material type. NRC Generlo Letter 89-02, " Actions to improve the Detection of Counterfeit and Fraudulently Marketed Products" provides the NRC staffs conditional endorsement of EPRI report NP 5652,

' " Guideline for the Utilization of Commercial Grade items in Nuclear Safety related Applications (NCIG 07). EPRI NP.5652 includes an example of the i dedication of a valve stem in Exhibit 4, " Application of Acceptance Methods for Typical CGls including Varying Procurement Scenarios." The example uses an alloy analyzer to verify the material type (ASTM A278, Type 316 stainless steel).

The NRC Staffs conditional endorsement of EPRI NP 5652 did not provide any restrictions on the use of an alloy analyzer Therefore the draft Regulatory Guide should be revised so that it is clear that an alloy analyzer can be used consistent with the guidance in EPRI NP 5652,

2. The sample size required to satisfy the 95/5 criterion in Table 1 of Appendix B l appears to be incorrect. A review of several of the Inspection lots, based on accepted methods for determining sample size, found that the inspection lot sizes appear to be overly conservative. Also, the range of sample sizes has a sawtooth distribution. Assuming zero defectives in a lot sample, an inspection lot size of 59 requires a sample size of 46 and an inspection lot size of 60 requires a sample size of 38. This is a recurring trend throughout the table, The i basis for the table should be reevaluated to ensure that the numbers in the table are correct.

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