United States Nuclear Power
Federal Regulations, Codes, & Standards
Users Group ©
Section XI Meeting Notes - May 2001
Prepared By: Dajun Song
Company: Progress Energy
Meeting Dates: May 14 - 17, 2001
Meeting Location: Pittsburgh, Pennsylvania
1. ISI/NRC Symposium (PV&P Conference) will be held in Atlanta, GA. 7/23 – 7/27, 2001.
2. Next Section XI meeting is in Vancouver, BC. Sheraton Wall Center (604) 331-1000. $235.00/night – Canadian dollar. (8/6/01 – 8/9/01) Please make your reservations by 7/2/01.
3. NRC Report
- Risk Informed ISI submittal. The NRC has received 35 out of 52 submittals. They have approved 13 out of 35.
- NRC, NEI, WOG, and EPRI met on 5/22/01 to discuss RBI on High Energy Line Break (HELB). Nine Mile and Calvert Cliffs has already submitted RBI on HELB (using EPRI methodology) to NRC. It appears that the approval process for using RBI on HELB will be different than applying to ASME XI requirements. NRC is looking at approving Generic Topical Reports (EPRI or WOG), and then issuing a SER. Once the SER is issued, individual utilities can use the SER through the 50.59 process (may require FSAR and/or Tech. Spec. change). NRC should make a decision on this process within next few months.
- Next update to 10CFR50.55a will include 2000 Addenda of Section XI. Will be out for public comment around September 2001. Final by fall of 2002.
- Approval of Code Cases will stay in Reg. Guide 1.147. Out for public comment in August. This will include up to Supplement 11.
4. ASME web site. For latest code committee activities. Member ID and Password required.
5. Mr. Dave Cowfer has resigned as Chairman of SGNDE. New Chairman is Jack Spanner Jr. Mr. Gill Milman has resigned as member of SC XI and MC. Wally Norris will replace Mr. Milman on SC XI. Frank Churney will take Mr. Milmans’ place on MC.
6. Task Group on Cast Stainless Steel. Code Case was developed (similar to pump casing weld) to address examination. However, the item failed SGE&S. TG will look at alternative examination method, and report at next meeting.
7. Database for Code Whitepaper is almost complete. It contains data from year 2000 and on. Will look at getting older whitepapers added to the database. Warren Bamford is point of contact.
8. SC XI is forming a TG to codify examination requirements for CRDM head penetrations. They are looking for volunteers.
9. In the future, there will be less code Addenda, and more Editions.
10. The following Code Cases were reaffirmed; N-323-1, N-471, N-586, N-617, N-619, N-623, and N-624.
11. The following Code Cases were voted to expire; N-408-3, N-521, and N-627.
12. The following Code Cases did not pass MC (all NRC negatives): All code cases were reaffirmed. Goes to MC on second consideration. It should pass MC.
N-546 (because there is no recertification for operators)
Code Committee Protocol
A quick lesson on code committee protocol. Typically, a code item starts at Task Group (TG) level and must work its’ way through BNCS before it gets published. Here is the pecking order.
TG – Task Group
WG – Working Group
SG – Subgroup
SC XI – Subcommittee Section XI
MC – Main Committee (Items can still pass with 3 negative votes if it’s a "second
BNCS – Board of Nuclear Codes and Standards
Some popular "Groups";
TGISIO – ISI Optimization
WGISC – Inspection of Systems and Components
WGRBI – Risk Based Inspection
WGPT – Pressure Test
WGIWE/IWL – Containment
WGGR – General Requirements
SG WCS – Water Cooled Systems
SGNDE – Nondestructive Evaluation
SGRRM – Repair, Replacement, and Modifications
Code Committee Items
1. Code revision to incorporate Class 2 set-on nozzle configuration with austenitic material passed MC.
2. Proposed Code Case N-600, Sharing of Welder Performance Qualifications, passed MC. This allows an Owner to accept performance qualifications from other Owners. Another good code case.
3. Plant Life Extension (PLEX)/RBI. More and more these two topics are being intertwined. Some utilities have used RBI methodology to supplement their PLEX submittals. ANO has submitted, and Surry and McGuire planning something similar.
4. WGISC is still working on a proposed code case that incorporates results from BWRVIP report, which recommends reduction in BWR RPV shell weld examinations.
5. Proposed Code Case - addresses alternative examination requirement for bolting (B-G-1, B-G-2, and C-D). It clarifies selection criteria, and provides consistency between the Class 1 and Class 2 examinations. Also, it allows surface examination of bolting in lieu of volumetric examination when bolting is removed (such as RPV studs). It passed MC. Good code case.
6. Proposed Code Case to eliminate surface examination of socket welds. Item failed SCXI.
7. Revision to Code Case N-597 (FAC). This revision covers materials other than carbon and low alloy steels, and addresses other wall thinning phenomena. Reaffirmed at SCXI.
8. Two proposed code cases will be letter balloted at SCXI. They are, Alternative R/R Rules and Risk Informed Safety Classification.
9. A code change and proposed Code Case to Appendix VIII, Supplement 2 to include provisions for piping examination from the inside surface passed MC.
10. Update on Code Case N-619, Alternative Requirements for Nozzle Inner Radius Inspections for Class 1 Pressurizer and Steam Generator Nozzles. Warren Bamford is still working with NRC on the acceptance of this code case. Two issues remain with the NRC. They are; need to perform Risk Calculation (Assessment) per Reg. Guide 1.174, and continue surveillance of that region.
11. WGISC will vote (next meeting) on an item from TGISIO that revises the current (1992 Edition and beyond) VT-2 and VT-3 requirements back to the level stipulated in 1989 Edition (or similar). In later Editions of the Code, the VT-2 and VT-3 has gotten more stringent.
12. Proposed code case, Alternate Requirements for Class 1 and 2 Surface Examinations. This code case limits the surface examination to welds that are susceptible to OD attack. After a lot of discussion, it failed SGWCS. Sent back to WGISC.
13. Code case N-647, Alternative to Augmented Examination Requirements of IWE-2500 has been published in Supplement 11.
14. Proposed code case N-307-3, Alternative Rules for the Examination of Bolting. This code case allows utilities using earlier Additions of the code to choose either volumetric or surface examination (or eliminates surface examination) on RPV studs. At BNCS.
15. A code change and proposed Code Case to Appendix VIII, Supplement 11 to allow the use of samples from the existing Boiling Water Reactor Owners Group qualification program, and revises the sizing acceptance criteria to be consistent with piping supplements 2, 3, and 12. Reaffirmed at SC XI.
16. Revision to Appendix VIII Supplements 4 and 6. Incorporates portions of Code Case N-622 that apply to Supplements 4 and 6, and provide instructions for single side performance demonstrations. Passed SCXI.
17. Revision of Appendix I of ASME XI to include Examination Coverage Requirements. This is similar to what is in Code Case N-622.
18. Proposed code change. Adds the following words to the open flow path test, "Test personnel need not be qualified for VT-2 examination." Passed SCXI.
19. Code change to address augmented examination requirements for concrete containments following repair/replacement activity. This change mostly applies to plants that have post-tensioning systems that may replace their SG, and must cut some tendons. Passed SCXI.
20. TGISIO is working on an item to eliminate volumetric examination of Regenerative (Regen.) and Residual Heat Removal (RHR) Heat Exchangers, and replace with VT-2. Some utilities already have relief to perform VT-2, and some exempt the Regen. based on size (if it’s Class 2).
Note: To expedite the Code Inquiry process, all inquiries must be received by the ASME office (Oliver Martinez, Secretary) two weeks prior to the Code meeting.
The following Requirement Inquires was approved.
1. Question: Is it a requirement of IWB-2500-1, Category B-P, that when the reactor vessel is opened and re-closed during a mid-cycle outage (not the end of cycle refueling outage), a pressure test be performed?
2. Question: May Code Case N-522 be used to perform the pressure test following repairs or the installation of replacements by welding in containment penetration piping that is otherwise outside the scope of Section XI?
3. Question: Does a written practice, which meets the requirements of IWA-2300 of the 1992 Edition with 1992 Addenda and later Editions and Addenda satisfy the requirements of the 1989 Edition and earlier Editions and Addenda?
4. Question: When the Construction Code is ASME Section III and NA-3700 or NCA-3800 is applicable, may materials purchased, stored and handled by a Repair/Replacement Organization at one location be transferred and used in repair/replacement activities by the same Repair/Replacement Organization at a different location when the Repair/Replacement Organization is not an accredited Materials Organization or N-Type Certificate Holder provided that both locations are covered by the Repair/Replacement Organization’s quality assurance program?
5. Question: Is it a requirement of IWA-6210 that an Owner prepare the Owner’s Report for Inservice Inspections, Form NIS-1, for preservice and inservice examination of Class MC and CC pressure retaining components and their supports?
The following Intent Inquires was approved. (Note: Intent inquires require approval of SCXI members, and need accompanying code change.)
1. Question: Is it the intent of Code Cases N-560, N-560-1, N-560-2, N-577, N-577-1, N-578, and N-578-1 that examination performed in accordance with the Owner’s existing FAC program that also satisfy requirements of the referenced code cases, be subject to inspections conducted by the Inspector in accordance with IWA-2000 or the reporting requirements of IWA-6000?
2. Question: Is it the intent of ASME Section XI, Appendix VIII, that the center frequency and bandwidth of pulsers, receivers, and search units be measured in accordance with Supplement 1 if substitutions are of the same manufacturer and model or series as those that were used in the procedure qualification and subsequent personnel demonstrations?