ML20217C815
| ML20217C815 | |
| Person / Time | |
|---|---|
| Site: | 05200003 |
| Issue date: | 03/23/1998 |
| From: | Joseph Sebrosky NRC (Affiliation Not Assigned) |
| To: | NRC (Affiliation Not Assigned) |
| References | |
| NUDOCS 9803270186 | |
| Download: ML20217C815 (4) | |
Text
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e March 23, 1938-APPLICANT: Westinghouse Electric Company PROJECT:
AP600
SUBJECT:
DOCUMENTATION OF AP600 INFORMAL CORRESPONDENCE TO WESTINGHOUSE CONCERNING A FINAL SAFETY EVALUATION REPORT (FSER) OPEN ITEM FOR CONTAINMENT COATINGS On March 13,1998, the staff provided Westinghouse with the comments in the attachment.
The purpose of the transmittal was to provide Westinghouse comments on their position concoming containment coatings that was transmitted to the staff in a February 27,1998, letter (NSD-NRC-98-6588).
original signed by:
Joseph M. Sebrosky, Project Manager Standardization Project Directorate Division of Reactor Program Management Office of Nuclear Reactor Regulation Docket No.52-003
Attachment:
As stated cc w/att: See next page plSTRIBUTION w/ attachments:
Docket File PDST R/F TKenyon
" PUBLIC BHuffman JSebrosky DScaletti JNWilson SMagruder JHWilson MDunsaniwskyj JPeralta,0-9 A1 RGramm,0-9 A1 RLobel,0-8 H7 EThrom, O-8 H7 JDavis,0-7 D4 GGeorgiev, O-7 H15 DISTRIBUTION w/o attachments:
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3 DOCUMENT NAME:A:\\ COAT 8!G. FAX To aceive a copy of this document, Indicate in the box: "C" = Copy without attachment /enclocure "E" = Copy
. with attachment / enclosure "N" = No copy OFFICE PM:PDST:DRPM SCSB:DSSA l
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4 Westinghouse Electric Corporation Docket No.52-003 l
. cc:
Mr. Nicholas J. Liparulo, Manager Mr. Frank A. Ross Nuclear Safety and Regulatory Analysis U.S. Department of Energy, NE-42 Nuclear and Advanced Technology Division Office of LWR Safety and Technology j
Westinghouse Electric Corporation 19901 Germantown Road P.O. Box 355
_ Germantown, MD 20874 Pittsburgh, PA 15230 Mr. Russ Bell Mr. B. A. McIntyre -
Senior Project Manager, Programs Advanced Plant Safety & Licensing Nuclear Energy institute Westinghouse Electric Corporation 1776 i Street, NW Energy Systems Business Unit Suite 300 Box 355 Washington, DC 20006-3706 Pittsburgh, PA 15230-Ms. Lynn Connor Ms. Cindy L. Haag Doc-Search Associates Advanced Plant Safety & Licensing Post Office Box 34 Westinghouse Electric Corporation Cabin John, MD 20810 Energy Systems Business Unit Box 355 Dr. Craig D. Sawyer, Manager Pittsburgh, PA 15230 Advanced Reactor Programs
~
GE Nuclear Energy Mr. M. D. Beaumont 175 Curtner Avenue, MC 754 i
Nuclear and Advanced Technology Division San Jose, CA 95125 J
Westinghouse Electric Corporation I
One Montrose Metro Mr. Robert H. Buchholz 11921 Rockville Pike GE Nuclear Energy Suite 350 175 Curtner Avenue, MC-781 Rockville, MD 20852 San Jose, CA 95125 Mr. Sterling Franks Barton Z. Cowan, Esq.
U.S. Department of Energy Eckert Seamans Cherin & Mellott NE 50 600 Grant Street 42nd Floor 19901 Germantown Road Pittsburgh, PA 15219 Germantown, MD 20874 Mr. Ed Rodwell, Manager l
Mr. Charles Thompson, Nuclear Engineer PWR Design Certification AP600 Certification Electric Power Research Institute NE 50 3412 Hillview Avenue 19901 Germantown Road Palo Alto, CA 94303 Germantown, MD 20874 Mr. Robert Maiers, P.E.
Pennsylvania Department of Environmental Protection Bureau of Radiation Protection Rachel Carson State Office Building P.O. Box 8469 Harrisburg, PA 17105-8469
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AP600 CONTAINMENT COATINGS March 13,1998 The staff has reviewed Westinghouse's response concoming containment coatings contained in a letter dated February 27,1998 (NSD NRC-98-5588). The staff has compiled the list of problems found below concoming Westinghouse's response. The major problems are:
(1) although the coatings on the containment shell are considered safety-related. Westinghouse maintains that it is not necessary to apply Appendix B to their application (as defined in proposed Table 6.1-2 in the letter), (2) the exceptions to Regulatory Guide (RG) 1.54 and its endorsed standards need to be clearly identified, and (3) there are major inspections, tests, analyses, and acceptance criteria (ITAAC) issues involved with Westinghouse's proposal. In addition, there are some minor problems with Westinghouse's response.
- 1. Table 6.1 If containment shell coatings (inside and outside surfaces) are safety-related, then Westinghouse's position that their application need not include " qualification of personnel, preparation of surfaces and verification that coating procedures are followed" does not meet the requirements of Appendix B to 10 CFR Part 50 and is, therefore, unacceptable.
(a)
General-Westinghouse needs to clarify its exception to ANSI N101.4-1972 by explicitly stating which " appropriate current" quality assurance standards will be used in lieu of ANSI N101.4-1972. Also, Westinghouse needs to explicitly identify which ASTM standards, including version and/or edition, will be used in lieu of ANSI N101.2-1972,
" Protective Costings (Paints) for Light Water Nuclear Reactor Containment Facilities."
(b)
RP C.1 - The staff recognizes that ANSI N101.4-1972 and ANSI N45.2-1971 are not
" current" standards and that ANSI /ASME NQA-1 is an appropriate standard for QA.
However, Westinghouse needs to state that ANSI /ASME NQA-1-1983, as endorsed by RG 1.28, will be used in lieu of ANSI N45.2-1971.
(c)
RPs C.2 and C.3 - Westinghouse needs to clarify its exception to ANSI N101.4-1972 by explicitly stating which " appropriate current" quality assurance standards will be used in lieu of ANSI N101.4-1972. See also item (a), above.
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- 3. There are two outstanding ITAAC issues related to the subject of coatings which are being pursued separately. The two issues are the verification of the coatings in ITAAC and the verification of the heat sinks for WGOTHIC. Westinghouse's proposed ITAAC conceming containment coatings was deemed insufficient and a follow on question has been issued to Westinghouse on the subject. There is also an ITAAC issue conceming the verification of the heat sinks used in the WGOTHIC analysis. Because the thickness of the coatings can impact the heat sink analysis the coatings issue will be included in the discussions of this iTAAC.
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Attachment
- 4. In Subsection 6.1.2.1.3 of the proposed SSAR revision, Westinghouse states "The inorganic zinc coating enhances heat transfer by providing good heat conduction and by enhancing surface wetting of the exterior surface of the containment vessel." Unless the coating has some unknown property, its application would inhibit conduction not aid conduction. It is medeled as a thermal resistance. While it may be Westinghouse's desire to indicate that the coating, through its propensity to aid in wetting the surface, results in an overall improvement in the heat transfer process, as compared to bare steel, the statement should so indicate. It is difficult to conclude that the coating effectively coaducts heats or that effective conduction is a required property.
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