ML20217H893

Summary of 980318 Meeting W/Owners Group Members & Nuclear Energy Inst in Rockville,Md Re Industry Maint of Reactor Vessel Integrity Database.List of Participants,Graphs & Industry Questions & NRC Answers Encl

ML20217H893
Person / Time
Issue date:	04/01/1998
From:	Wichman K NRC (Affiliation Not Assigned)
To:	Sullivan E NRC (Affiliation Not Assigned)
References
NUDOCS 9804060107
Download: ML20217H893 (15)

Text

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• Carg, p3 1 UNITED STATES g j NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. spee6 40tH

' %, / April 1, 1998

~ MEMORANDUM TO: Edmund J. Sullivan, Acting Chief Materials and Chemical Engineering Branch Division of Engineering FROM: h Keith R. Wichman, Chief Section A Materials and Chemical Engineering Branch Division of Engineering

SUBJECT:

MEETING

SUMMARY

FOR MARCH 18,1998 MEETING WITH OWNERS GROUP REPRESENTATIVES AND NEl REGARDING INDUSTRY MAINTENANCE OF THE REACTOR VESSEL INTEGRITY DATABASE On Wednesd.iy, March 18,1998, members of the U.S. Nuclear Regulatory Commission (NRC) staff participated in a public meeting with owners group members, a Nuclear Energy Institute (NEI) representative and other industry officials at the NRC's Rockville, MD, Headquarters to discuss industry maintenance of the reactor vessel integrity database (RVID). Attachment 1 is a list of the meeting participants. Attachment 2 is the NRC staffs' presentation view graphs.

Attachment 3 is the industry questions and NRC answers regarding maintenance of the RVID.

Each question in Attachment 3 was discussed at the meeting.

NRC management opened the meeting by stating that maintenance of data for reactor pressure vessel (RPV) integrity analyses is the responsibility of the industry, in addition, management noted that the RVID was developed by the staff since, at that time, no effort had been initiated by the industry to consolidate the vast amounts of data.

The RVID Technical Monitor gave a brief overview of the major features of the database since it has been transferred to Microsoft Access

• format. The meeting was then opened to discussion of the questions in Attachment 3.

The following issues were raised during discussion of the questions:

Since the RVID is mainly a tool for reviewing the history related to an action or request, there was discussion regarding whether or not it would need to meet the criteria described in 10 CFR 50, Appendix B " Quality Assurance Criteria for Nuclear Power Plants and Fuel Reprocessing Plants." An Owners Group representative stated that there would be a big difference in cost if the database had to meet Appendix B as opposed to simply verifying the data for traceability purposes. Although the group agreed that the database would probably not have to meet Appendix B requirements, this issue was identified as an item for further y

discussion. 75 CONTACT: Andrea D. Lee, EMCB/DE 8 9804060107 900401 415-2735 hb9J l PDR REVGP ERGNUMRC O 13 1= *'.'- j'^',

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1 EdmundJ. Nuvan The representative from the Electnc Power Research Institute (EPRI) noted that bench-marking the industry database (RPVDATA) with the RVID would be difficult since they both have different types of information. RPVDATA contains docketed information from RPV analyses

' whkh is compiled in a convenient manner to allow queries for comparison purposes. Some of the RVID summary reports are contained as a subset of RPVDATA. RPVDATA does not contain any calculational procedures. The RVID performs the Regulatory Guide (RG) 1.99, Revision 2 calculations using docketed information which makes it a valuable tool to perform staff evaluations. The situation could occur where the databases have two different values for one material that should remain different, with sufficient explanation of the differences.

The staff highlighted the importance of identifying who in industry would maintain and update the database. There were questions regarding how often, and in what circumstances, proposed changes would need to be submitted to the NRC. There were also questions on the NRC staff's proposed 60 day negative consent for changes. Several scenarios were discussed (e.g. updates would bu submitted to tiw NRC by the licensee with a copy to the industry individual who is responsible for updates, the NRC agrees by negative consent, then changen, are made by the industry after the 60 day negative consent period). For cases where new data are submitted with an evaluation, the safety evaluation report (SER) will need to identify the specific data that need to be updated in the database. These types of details will need to be more precisely identified.

j Since there is no formal regulatory mechanism for the transfer of the maintenance of the RVID to the industry, an Owners Group representative asked what would be the legal requirement for the industry to continue these updates, for example, ten years from now. This issue needs further discussion, however, a Memorandum of Understanding (MOU) would be a possible mechanism.

A method for tracking data changes to the pressure-temperature limits report (PTLR) will also need to be developed since PTLRs do not need to be submitted to the NRC if the methodology does not change. This was identified as an item for further discussion.

A conflict of interest does not exist when considering the transfer of the maintenance function of the RVID from the NRC to the industry. However, this conclusion may need to be re-visited if it is determined that the database must meet 10 CFR 50 Appendix B requirements. l

+

Another item for further discussion is whether or not the database would continue to be posted on the World Wde Web.

The EPRI representative suggested the development of a users group or steering committee of individuals who would discuss upgrades of the database. These upgrades would be actual structural changes as opposed to data changes or updates.

The staff closed the meeting by asking the industry what it would need in order to take over the RVID. The NEl representative and some of the Owners Group representatives stated that the individuals at the meeting do not have the authority to commit the entire industry, but that they could take the issue to their members for discussion. The group agreed that more meetings would be needed to define protocol and possibly work out an MOU.

l I

Edmund J. Sullivan '

The staff plans to update the RVID once it has reviewed licensee responses to the Generic Letter 92-01, Revision 1, Supplement i requests for additional information (RAls). These RAls are expected to be issued within the next few months. The staff plans to complete the RVID update and release the database to the industry by the end of 1999.

The general consensus among the participants was that the staff's proposal for transferring the maintenance of the RVID to the industry is reasonable, and will be discussed with higher levels of management. However, the industry will first need an estimate of how much the transfer would cost before making a commitment. The NEl representative estimated that it would take a few weeks to respond to the staff regarding the industry's decision. He committed to contact NRC management late the week of March 23 with an estimate of when the staff can expect an answer.

Attachments: 1. Meeting Participants

2. View Graphs

3. Industry Questions /NRC Answers Regarding Maintenance of the RVID cc: Kurt Cozens, NEl DISTRIBUTION:

File Center PUBLIC SJCollins FJMiraglia BWSheron ,

GLainas JStrosnider Craig SMagruder JWilson i JBirmingham MMalloy MMitchell MKhanna Sheng JMedoff MMayfield EHackett EMCB R/F Meeting Participants (via email) ,

3l34 DOCUMENT NAME: G:\ LEE \MTGSUMRV.WPD

, INDICATE W SOX:"C"= COPY WlO ATTACHMENTIENCLOSURE "E"= COPY WlA L, "N"=NO COPY OFFICE EMCB:DJ _ E euCs:De .eis:s:ii6 i P E <^>sC:suCs NAME' Alee QA BElliot hb b EJSullivan OA= 31688' S A%8 ~ 3 ass fi / ss.

OFFICIAL RECORD COPY l-

MEETING PARTICIPANTS MEETING TO DISCUSS INDUSTRY MAINTENANCE OF THE REACTOR VESSEL INTEGRITY DATABASE MARCH 18,1998 NAME ORGANIZATION Andrea Lee NRC/NRR/DE Bob Hardies BGE Stan Rosinski EPRI Bob Clark ANO Keith Wichman NRC/NRR/DE Tim Herrmann AmorenUE/WOG Kurt Cozens NEl Dana Covill GPU Nuclear /BWRVIP Noel Dudley ACRS Jenny Weil McGraw-Hill Ed Wenzinger NUS James Medoff NRC/NRR/DE Meena Khanna NRC/NRR/DE Altheia Wyche SERCH Licensing /Bechtel .

Lynn Conner Doc-Search Associates Allen Hiser '

NRC/NRR/DE Barry Elliot NRC/NRR/DE Simon Sheng NRC/NRR/DE ATTACHMENT 1

NRC/ INDUSTRY MEETING ON MAINTENANCE OF THE REACTOR VESSEL INTEGRITY DATABASE (RVID)

BRIEF OVERVIEW OF RVID FEATURES March 18,1998 ANDREA D. LEE MATERIALS ENGINEER DIVISION OF ENGINEERING l MATERIALS AND CHEMICAL ENGINEERING BRANCH (301) 415-2735 ATTACHMENT 2

3 Sectlen 3 -VIEWING DATA -

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• Docket number e Plant Name e Manufacturer e NSSS Designer e EOL Date The default sort order is by plant name. The button that is currently controlling the plant list sort order is, red.

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RVID2 Users Manual 11 Sf22/97

.' FORGINOS, PLATES, WELDS Clicking thh button (Cn the " Plant Detail" screen) displays the " FORGINGS PLATES AND WELDS FOR THIS '

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Forgings, Plates, and Welds Detail Screen This screen displays information for the particular forging, plate, or weld that you have selected from the " F Plates, Welds" sut> screen in the " Plant Detall" screen. The information consists of input data and the resultant calculated data for RTpts @ EOL (for PWR plants) or RTndt @ EOL (for BWR plants), USE @ EOL (1/4T), and any notes about the material.

Contents on the screen dynamically change depending on the type of material you are currently viewing; i.e specific information does not appear when viewing a forging or a plate.

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RVID2 Users Manuel 8/22/97

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S::ctbn 4 - REPORTS R:psrt M:nu Screen . .

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The Report Menu sub-screen (on the Main Screen) contains three summary reports, a user defined re can be exported to an Exce! 3.0 file), and three reference tablo reports. These reports can be accessed b clicking on the appropriate button, s

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PTS / P.T Limits Summary This button allows you to preview and print the PTS / P-T Limits Summary for selected plants or all pb PTS / P T Limits report contains plant, beltline, chemistry, heat 10, fluence, RTndt (u), Margin, RTps d atrociated methods for obtaining the data.

USE Summary This button allows you to preview and print the USE Summary report for selected plants or all plants. The Summary report contains plant, beltline, chemistry, heat ID, unirradiated USE, USE at EOL, percent d at 1/4 thickness and associated methods for obtaining the data.

Surveillance Data Summary This button allows you to preview and print the Surveillance Data Summary report for telected plants This report displays all data and calculations related te surveillance material.

User Defined Report This button is discussed in detallin the next sub-section Reference Tables The three buttons under the

• Reference Tables" heading, print the specified reference table's data a Please refer to "Section 5 - REFERENCE TABLES" for specific information about each reference table.

RVID2 Users Manuet 8f22/97

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.' . Urr-Defin:d R : port

• Thb button cllows you to define a report showing certain selected criteria and up to 14 ' data fields sorted in the order that you specify. When this button is activated, a blank forniwill appear, which will allow you to enter you ~

specific criteria. The selection criteria are discussed below.

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- h+M .Wr 6- f- A { lN, ;t .h M iy : d :.g The User. Defined report contains two major sections: Selection Criteria and Sort Criteria. The fields for these sections are discussed below.

Selection Criteria Select the plants and materials you wish to view by choosing the Vessel Designer, Vessel Fabricator, Reactor Type, Owners Group, and Materials (Forgings, Plates, Welds or A!!). The default choices are All Designe Fabricators, AllTypes, All Groups, and All Materials. Make selections by either clicking on the arrow button to the right of the field to get a drop-down list to choose from, or by highlighting the field and typing the first characters of the parameter you wish to select.

PLANTR Vessel Designer- The default selection is ALL DESIGNERS. Other selections are, B&W, C-E, GE, or WESTINGHOUSE.

Vessel Fabricator-The default selection is ALL FABRICATORS. Other selections are BABCO WILCOX, CHICAGO BRIDGE AND IRON, COMBUSTION ENGINEERING, HITACHI, NEW YORK SHIPBUILDING, ROTTERDAM DOCKYARD, or SOCIETE CREUSOT.

Reactor Type - The default selection is ALL TYPES. Other selections are PWR, or BWR.

Owners Group - The default selection is ALL GROUPS. Other selections are NONE, B&WOG, BWROG, CEOG, or WOG.

FORGINGS. PLATES AND WELDS Material- The default selection is ALL MATERIALS. Other selections are FORGINGS, PLATES, or WELDS.

If you select FORJINGS or PLATES, only the Base Metal field will appear below. If you select WELDS the Heat Wire and Flux Type fields will appear below Base Metal, Heat Wire, Flux Type -The default selection leaves these three fields blank. This will allow the program to include all base metals, heat wire, and flux types. The other options are to select a specific Base  !

Metal, Heat Wire, and/or Flux Type from the drop-down list.

i 1

RVID2 User's Manuel -16 8/22/97 l

INDUSTRY OUESTIONS/NRC ANSWERS REGARDING MAINTENANCE OF THE REACTOR VESSEL INTEGRITY DATABASE (RVID) BY INDUSTRY

1. What is the NRC's k ng-term purpose for RVID? Please comment on NRC intentions with respect to use of valt es from the database versus use of a licensee's docketed vessel materials information.

The database will continue to be a tool for the staff to utilize when reviewing RPV integrity submittals. For example, the staff compares what is in the licensee's submittal to what is contained in the RVID. Significant differences or new values with no corresponding explanation in the submittal would prompt the staff to request additional information to determine the basis for the changes. If the staff's review determines that the changes are justified, the new values will be incorporated into a subsequent revision of the database.

In other words, the staff does not blindly apply the information in the RVID for RPV integrity evaluations. The RVID helps the staff keep track of changes in the docketed j information, and therefore provides for more complete review of submittals. j j

2. Why does the NRC want industry to assume responsibility for RVID? Please comment on NRC expectations with respect to the regulatory or economic benefits of the tumover to NRC

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The industry has ultimate responsibility for the integrity of RPVs in their plants, so it makes sense that the maintenance function of the database should be transferred to the industry.

Maintenance of the data anu possible upgrades that might be desired in the future would be performed by the industry, thereby reducing the current level of NRC resources. The NRC staff could review modifications of the code, as appropriate.

In addition, a major purpose of the database is to assure that data that affect more than i one plant are shared among licensees and are consistently applied.

A benefit to the industry is that it would have direct input for updates, and the process could possibly be performed more quickly since the limited NRC resources could be focused on verification rather that updates of the database. ,

3. In the work performed by ASTM Subcommittee E10.02, a significant effort was necessary to ,

assure that data contained in the database was intemally consistent before it could be '

tumed over for developing the embrittlement correlations for ASTM E900. Does the NRC plan to perform a consistency evaluation of the data contained in RVID before the tumover?

The RVID and the industry database P.PVDATA will be benchmarked prior to tuming over the maintenance function of the RVID to the industry.

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4. What are the NRC sts# expectations with respect to the final product if industry assumes responsibility for the RVID function? Willit be the upper shelf and PTS databas,e currently in RVID?

The staff expects that the industry would want to keep the upper shelf energy (USE),

PTS /P-T limits, and user-defined query information since it is already compiled in a convenient manner. The final product should be clearly auditable regardless of the type of changes that are made to the database.

5. What is the process (regulatory or practical) to transfer the responsibility of the RVID function?

The industry would need to identify who would maintain the database (e.g. coordinated by NEl, maintained by EPRI). The NRC would then provide the database and inform all licensee 9 of the transfer via an Administrative Letter.

6. What protot ol does the NRC staff anticipate will be needed to enter new or modified data into RVID at ter the tumover? Please consider who initiates the change, who will be responsible for verifying the change, and how quickly a change needs to be made once the change process is started.

Industry would inform the NRC of any changes made for our negative consent (e.g. notify the NRC 60 days prior to making changes). If the NRC does not raise any issues, changes can be made to the database. The industry should also provide the NRC access to the most up-to-date version.

7. Would induatry maintenance of the RVID function cause a conflict ofinterest if the RVID is used by NRC to conduct licensing evaluations?

Maintaining data is ultimately the indurtry's responsibility, not the NRC's. Therefore, conflict of interest is not an issue.

8. Does the NRC staff intend to maintain its own version of RVID after the RVID function is transferred to industry?

The staff plans to use the NRC approved, industry version as long as the calculations are maintained. The calculations in the RVID are a benefit to the staff since they provide a convenient means to use the RG 1.gg, Rev. 2 methodology, and to look at "what if" scenarios. Without the calculations in such a multi-level application, integrity of the data would be much harder to ensure (i.e. when surveillance data are added which can be used for chemistry factor calculations, the corresponding beltline values in a database with no calculations would need to be manually changed whereas the RVID performs these calculations automatically). The database will also continue to be made available to the public via the world wide web and via mail for those who do not have intemet access.

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9. Does the NRC intered RVID to contain data that is not docketed by the licensee?

The input data in the database is docketed information, and some of the calculated data are not necessarily docketed due to differences in the way that licensee's apply, for example, surveillance data to RPV integrity calculations. The input and calculated data are clearly divided in the plant detail screen. The database does have override capability for entering values other than what results from the calculations.

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