ML20134P101
| ML20134P101 | |
| Person / Time | |
|---|---|
| Issue date: | 02/13/1997 |
| From: | Carpenter C NRC (Affiliation Not Assigned) |
| To: | Wichman K NRC (Affiliation Not Assigned) |
| References | |
| NUDOCS 9702250127 | |
| Download: ML20134P101 (76) | |
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WASHINGTON, D.C. 20666 0001 February 13, 1997 MEMORANDUM TO: Keith R. Wichman, Acting Chief Materials & Chemical Engineering Branch Division of Engineering Office of Nuclear Reactor Regulation FROM:
C. E. Carpenter, Jr., Lead Project Manager Materials & Chemical Engineering Branch Division of Engineering Office of Nuclear Reactor Regulation
SUBJECT:
MEETING SUfMARY FOR JANUARY 16, 1997, MEETING WITH BOILING WATER REACTORS VESSEL AND INTERNALS PROJECT (BWRVIP) EXECUTIVE OVERSIGHT C0fMITTEE, AND JANUARY 17, 1997, MEETING WITH BWRVIP TECHNICAL CHAIRS i
January 16. 1097. BWRVIP EOC Meetina A meeting was held at the U.S. Nuclear Regulatory Commission's (NRC) One White Flint North offices in Rockville, Maryland, on January 16, 1997, with NRC staff and members of the BWR Vessel and Internals Project (BWRVIP) Executive Oversight Committee (EOC) to discuss issues related to the BWRVIP activities.
The meeting was held at the request of NRC management. Attachment 1 is a list of attendees. Attachment 2 is the BWRVIP's meeting slides.
The BWRVIP executive chairmen discussed the status of current and future activities related to the resolution of BWR vessel and internals issues in the areas of integration, assessment, inspection, repair and mitigation. The discussion also included the status of key technical issues inclu61ng cracking of the jet pump riser assembly, Generic Letter 92-01 activities, and the status of NRC staff's review of BWRVIP-05, "BWR Reactor Pressure Vessel Shell Weld Inspection Recommendations," and BWRVIP-06, " Safety Assessment of BWR Reactor Internals." Also discussed were the schedules for the BWRVIP's submittal of planned documents, for the review of BWRVIP documents by the NRC staff, and for planned plant outages for 1997.
The BWRVIP has evaluated the consequences of cracking of the jet pump riser assembly, and has submitted " Assessment of BWR Jet Pump Riser Elbow to Thermal Sleeve Weld cracking (BWRVIP-28)," dated December 19, 1996, for NRC staff review. The NRC staff's review is ongoing.
The NRC staff reiterated its expectations to the BWRVIP, as was stated in the f[
January 7, 1997, letter to Robert G. Carter from Keith R. Wichman, that it is
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the NRC staff's expectations that the BWRVIP will make a best-effort search to provide reasonable assurance that bounding data is collected and considered in BWR reactor vessel structural integrity evaluations.
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CONTACT:
C. E. Carpenter, Jr.
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l The 3RC staff is continuing its evaluation of BWRVIP-05, and expects to inform the BWRVIP of the resolution to this issue in the near term.
The discussion of BWRVIP-06 included an overview of the prioritization scheme that the BWRVIP used to complete its Safety Assessment of BWR internals degradation. The BWRVIP approach is deterministic in nature, in that the BWRVIP assessed the consequences of assuming that individual components and systems fail. BWRVIP-06 does not evaluate the effects of multiple failures of systems or components. While the NRC staff has previously concluded that the poteni.lal for simultaneous failure due to cracking of multiple components or systems leading to cascading effects is low, the Office of Nuclear Regulatory Research (RES) is performing confirmatory research into possible synergistic effects of multiple failures, and requested that the BWRVIP coordinate its research into this area with RES staff. The NRC staff requested to meet with the BWRVIP at some early date to discuss more fully the methodology used to determine the prioritization for evaluating the effects of cracking on individual components and systems. The Lead Project Manager will coordinate the future meetings between the BWRVIP and RES staff on confirmatory research, and the meeting between the BWRVIP and NRC staff on the review of BWRVIP-06.
T:a ElRVIP informed the NRC staff that the various vendors are being regnsive to inspection needs and are developing required tooling and methodology to inspect the various components and systems within the reactor pressure vessel.
Further, the BWRVIP is developing, and submitting for NRC staff review, inspection and flaw evaluation guidelines for the various BWR internal components and systems. The NRC staff questioned the BWRVIP as to whether the individual licensees will commit to follow these guidelines once the NRC staff had evaluated and approved the various submittals. The BWRVIP executives committed to infom the NRC staff by April 1997 if the BWRVIP will coordinate individual licensees commitments to follow approved BWRVIP submittals.
The BWRVIP informed the staff of the status of documents presently under preparation for NRC staff review. The NRC staff reminded the BWRVIP executives that timely submittal of the documents for review, along with a list of utilities that plan to use the document during their next outage, is advantageous to a timely review. Also,.the NRC staff will expedite the review of all BWRVIP submittals.
Further, a listing of utilities outage scopes, with regards to BWRVIP submittals, would be useful to the NRC staff in allocating resources.
The BWRVIP informed the staff that it plans to submit a document on proposed weld overlay repairs of core spray piping that will be referenced by several utilities during the Spring 1997 outage season. The NRC staff agreed to expedite its review of this document.
The staff expressed a concern regarding the BWRVIP's prior commitment to submit the results of BWR internals reinspections immediately following an outage season. To date, an integrated report of the results of the Fall 1996 outages has not been submitted by the BWRVIP to the NRC.
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The NRC staff agreed to consider holding a meeting of Regional inspectors and i
other interested NRC staff to coordinate NRC inspection and review activities associated with BWRVIP submittals.
The meeting concluded with the NRC staff encouraging the BWRVIP to continue to work cooperatively with the NRC staff.
Further meetings will be scheduled as needed.
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January 16. 1997. BWRVIP Schedulina Meetina i
A meeting was held at the NRC's One White Flint North offices on January 17, j
1997, with NRC staff and members of the BWRVIP to discuss scheduling of
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reviews related to the BWRVIP submittals. The meeting was held at the request i
of the NRC staff. Attachment 3 is the review matrix created from the meeting.
Attendees at this meeting are indicated on Attachment 1 by an asterisk.
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The BWRVIP has submitted 12 documents that are currently under NRC staff j
review, and is planning to submit an additional 28 documents over the next year. The NRC staff discussed the status of its present reviews of the 12 documents, including planned requests for additional information (RAIs) that will be required to complete several reviews. Further, planned submittals were discussed and lead NRC staff reviewers were tentatively assigned.
Additionally, the BWRVIP discussed the research activities it has presently undertaken with regards to underwater weld overlay repairs of piping and underwater welding repairs of irradiated metals. The NRC staff suggested that the BWRVIP and NRC share the results of its respective literature searches into this area to ensure that both the industry and the staff are reviewing the most current and relevant data.
Further discussions regarding research will be scheduled as needed.
The BWRVIP staff and the NRC staff agreed to continue to meet to discuss emerging technical issues, status of technical reviews and resource allocation.
Attachments:
1.
January 16, 1997, List of Attendees 2.
January 16, 1997, BWRVIP Handout 3.
January 17, 1997, Review Matrix DISTRIBUTION: see next page
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Robert Keaten, Executive Chaiman Steve Leonard, Technical Chairman BWRVIP Inspection Task BWRVIP Inspection Task GPU Nuclear Niagara Mohawk Power Company ESBl j
One Upper Pond Road, Bldg F Post Office Box 63 Parsippany, NJ 07054 Lycoming, NY 13093 i
Carl Terry, Executive Chairman Robin Dyle, Technical Chairman BWRVIP Assessment Task BWRVIP Assessment Task Niagara Mohawk Power Company Southern Nuclear Operating Co.
Post Office Box 63 Post Office Box 1295 Lycoming, NY 13093 40 Inverness Center Parkway Birmingham, AL 35201 George Jones, Executive Chairman John Wilson, Technical Chairman BWRVIP Mitigation Task BWRVIP Mitigation Task Pennsylvania Power & Light Public Service Electric & Gas Co.
l A6-1 N51 Two North Ninth Street Post Office Box 236 Allentown, PA 18101 Hancocks Bridge, NJ 08038 i
Bill Campbell, Executive Chairman Bruce McLeod, Technical Chairman BWRVIP Repair Task BWRVIP Repair Task Carolina Power and Light Company Southern Nuclear Operating Co.
411 Fayetteville Street Post Office Box 1295 Raleigh, NC 27602 40 Inverness Center Parkway Birmingham, AL 35201 Warren Bilanin, EPRI BWRVIP Manager Vaughn Wagoner, Technical Chairman Electric Power Research Institute BWRVIP Integration Task 3412 Hillview Ave.
Carolina Power & Light Company Palo Alto, CA 94304 One Hanover Square 8C1 i
P.O. Box 1551 Raleigh, NC 27612
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January 16,1997 1
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Agenda 1:00 p.m.
Opening Remarks EOC/NRC 1:10 p.m.
Technical Committee Summaries Integration V. Wagoner Assessment C. Terry i
Inspection R. Keaten Repair W. Campbell j
Mitigation G. Jones
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Status of Key Technical issues R.Dyle Jet Pump Riser Cracking Generic Letter 92-01 Activities i
RPV Shell Weld Inspection Recommendations
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Open Discussion BWRVIP/NRC l
BWRVIP Schedules Outage Schedules Other l
4:00 p.m.
Summary /Adjoum
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1 Integration Committee Summary f
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i Vaughn Wagoner Technical Chairman f
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BWRVIP and related activities between the committees, EOC, industry and NRC t
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BWRVIP I
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I Component Prioritization Matrix i
Priority ComDonent High Shroud - complete Core Spray Piping and Sparger j
Shroud Support Top Guide Core Plate l
SLC Medium Jet Pump Diffuser Low CRD Guide Tube CRD Stub Tube i
in-Core Housing Dry Tube Instrument Penetrations l
Jet Pump Assembly Vessel ID Brackets LPCI Coupling l
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Condition Assessment Guide Assessment (l&E)
Inspection Repair / Replace Mitigation f
ComDonent Guidelines Guidelines Design Criteria Recommendations j
core shroud Doc 1,5 Doc 2 Doc 3,4 Doc 6 j
core spray Doc 7 Doc 2 Doc 8 N/A shroud support Doc 6 j
core plate Doc.9 Doc 6 top guide Doc 10 Doc 6 SLC Doc 6 jet pump Doc 6
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Assessment Committee Summary Carl Terry
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BWRVIP l
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Assessment Committee Approach for Component Degradation Management i
l What needs to be inspected, when does it need to be inspected, inspection options, how do you disposition observed j
degradation l
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Assessment Committee 1996 Deliverables 1.
BWR Core Shroud inspection and Flaw Guideline, Revision 2 (BWRVIP-01) 2.
Guidelines for Reinspection of BWR Core Shrouds (BWRVIP-07) 3.
Evaluation of Crack Growth in BWR Stainless Steel RPV Internals (BWRVIP-14) 4.
BWR Core Spray Internals inspection and Flaw Evaluation Guidelines (BWRVIP-18) 5.
BWR Core Plate Inspection and Flaw Evaluation Guidelines j
(BWRVIP-25) j 6.
BWR Top Guide inspection and Flaw Evaluation Guidelines (BWRVIP-26) 7.
Assessment of BWR Jet Pump Riser Elbow to Thermal Sleeve Weld Cracking (BWRVIP-28) l 8.
SLC l&E Guidelines (delayed to 1997) 9.
Shroud Support l&E Guidelines (delayed to 1997)
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. Evaluation of Crack Growth in Low Alloy Steel RPV Internals 10 (delayed to 1997)
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Assessment Committee P
1997 Deliverables 1.
Jet Pump Assembly I&E Guidelines f
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CRD Guide / Stub Tube I&E Guidelines f
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In-Core Housing / Dry Tube I&E Guidelines 4.
Instrument Penetrations I&E Guidelines 5.
LPCI Coupling I&E Guidelines 6.
Internals Brackets I&E Guidelines l
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Evaluation of Crack Growth in Ni-base RPV Internals f
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O Status of BWRVIP Assessment Reports Under NRC Review submittal initial RAl/ response report date NRC review orocess SER issued shroud I&E, Rev. 0 9/94 complete complete 9/94 i
shroud I&E, Rev.1 4/95 complete complete 6/95 I
shroud I&E, Rev. 2 10/96 ongoing RPV weld inspection 9/95 4-5/96 6/96 safety assessment 10/95 5/96 12/96 f
GL 92-00 11/95 complete complete 10/96 j
j shroud reinspection 2/96 5/96 10/96 SS crack growth 3/96 12/96 ongoing j
i core spray l&E 7/96 ongoing core plate I&E 12/96 ongoing 1
top guide I&E 12/96 ongoing jet pump riser 12/96 ongoing i
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associated uncertainties i
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inspect. ion Comm.ttee i
1996 Deliverables 1.
Standards for Visual inspection of Core Spray Piping, j
Spargers, and Associated Components (Section 6A of BWRVIP-03) 2.
Core Spray UT Standards (delayed to 1997) f 3.
Shroud Support inspection Standards (delayed to 1997) i i
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EOC/NRC-1/16/97 15
4 inspection Committee 1997 Deliverables i
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Jet Pump Assembly inspection Standards 2.
SLC Inspection Standards j
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Core Plate inspection Standards l
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Top Guide inspection Standards 1
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Status of BWRVIP inspection Reports Under NRC Review submittal initial RAl/ response reoort date NRC review orocess SER issued shroud NDE uncertainty 11/94 complete complete 6/95 l
RPV/ Internals (BWRVIP-03) 11/95 ongoing core spray visual 4/96 ongoing r
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Keyissues Obtain NRC approval of RPV and internals
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Document includes:
Shroud NDE demonstrations Shroud support demonstrations Core spray inspection f
Mock-up guidelines f
Visual inspection standards NDE uncertainty guidelines BWRVIP
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Repair Committee Summary I
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Bill Campbell
~ Executive Chairman Carolina Power & Light
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Repair Committee Approach for l
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l Assure the availability of cost-effective repair options for BWR internals, vessel attachments and penetrations j
Repair Tasks:
Identify repair applications I
Develop repair design criteria Develop repair technology as necessary i
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i BWRVIP EOC/NRC-1/16/97 20
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Repair Committee 1996 Deliverables l
1.
Roll / Expansion Repair of Control Rod Drive and in-I Core Instrument Penetrations in BWR Vessels i
(BWRVIP-17) i 2.
Internal Core Spray Piping and Sparger Repair Design t
Criteria (BWRVIP-19) 3.
Core Spray Replacement Design Criteria (delayed to 1997) 4.
Underwater Flux Core Welding to 50 feet (delayed to 1997)
BWRVIP EOC/NRC-1/16/97 21
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Repair Committee 1997 Deliverables i
1.
Core Spray Piping Weld Overlay Repair 2.
Evaluation of Weldability of irradiated Materials 3.
Repair Design Criteria as needed for:
Jet Pump l
Top Guide Core Plate SLC I
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e Status of BWRVIP Repair Reports Under NRC Review i
submittal initial RAl/ response report date NRC review orocess SER issued shroud repair design 9/94 complete complete 9/94 j
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shroud repair design 10/95 complete complete 7/96 i
format / content l
core spray repair 9/96 ongoing design criteria CRD roll expEasion 11/96 ongoing f
repair BWRVIP EOC/NRC-1/16/97 23 l
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Keyissues Request timely NRC response to core spray l
repair design criteria (BWRVIP-19)
Request timely review of core spray piping weld overlay repair for use in Spring 1997 outages 9
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P Mitigation Committee Summary
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George Jones
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Mitigation Committee Approach for Component Dearadation Manaaement How can stress corrosion cracking degradation be prevented or reduced l
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Mitigation Committee 1996 Deliverables BWR Water Chemistry Guidelines (BWRVIP-29) i t
Produce a revised version of the 1993 BWR Water Chemistry Guidelines with recommendations for water chemistry controls that mitigate SCC and i
meet other plant objectives for water chemistry l
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BWRVIP EOC/NRC-1/16/97 27
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Noble Metal Chemical Addition (NMCA)
Plant demonstration of Noble Metal Chemical
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Addition (NMCA) at Duane Arnold Energy Center (DAEC)
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Schedule:
NMCA process applied at DAEC during October 1996 outage l
Hydrogen benchmark test completed in December i
1996 Fuel and core shroud to be inspected at end of first cycle in mid-1998 i
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EOC/NRC-1/16/97 28 t
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Report on Regulatory Credit for Mitigation l
Provide technical basis for monitoring and j
performance criteria for water chemistry controls including justification for inspection intervals and service life estimates Schedule:
December 1997 (delayed from 1996) j I
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l Mitigation Committee Milestones Advanced Mitigation Techniques Perform laboratory studies to verify technical feasibility of zirconium oxide inhibition of SCC without hydrogen addition Schedule:
Complete zirconium oxide laboratory demonstration in 1997 l
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Status of Jet Pump Riser Cracking issue 4
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Background:
Cracking identified in jet pump riser-to-thermal sleeve weld in international plant in Fall 1996 All 10 welds visually examined in international plant; cracking observed in 2 of 10 welds NRC informed of cracking in November 1996 l
Discussio.ns between GE, NRC and BWRVIP l
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Informed BWRVIP utilities and NRC of action plan (December 5,1996):
Preliminary GE conclusions that consequences of cracking do not represent a substantial safety hazard l
Generic communication with NRC on this i
subject to be handled by BWRVIP BWRVIP pursuing a generic safety assessment i
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D Jet Pump Riser Crackina BWRVIP Actions (continued):
j BWRVIP transmitted GE SIL to NRC and BWRVIP on December 13,1996 Transmitted generic safety assessment to NRC on December 23,1996
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Conduct.ed informal survey of jet pump assembly inspection results to date Pursuing existing BWRVIP plans to prepare jet pump assembly inspection and evaluation (l&E) guidelines as number one priority in 1997 l
BWRVIP EOC/NRC-1/16/97 34 f
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Jet Pump Riser Cracking BWRVIP Generic Safety Assessment:
Cracking at the jet pump riser to thermal sleeve weld only a safety issue with complete riser weld failure during a large LOCA 1
Extremely low probability that cracking will resuit in a safety issue before next normal outage (and beyond for many plants) l BWRVIP EOC/NRC-1/16/97 35
(
f i
/
N i
Jet Pump Riser Crackina BWRVIP Generic Safety Assessment:
Recommendations:
Add jet pump M ratio to jet pump surveillance program (deviation of more than 10% is an indication of jet pump degradation)
Shut down plant if a jet pump is significantly degraded Review prior IVVI video tapes of jet pump region to establish, to degree possible, current condition of riser welds Consider inspecting riser welds at next normal refueling outage, factoring in plant age, operating history, water chemistry, etc.
BWRVIP EQC/NRC-1/16/97 36
(
D Jet Pump Riser Crackina f
BWRVIP Jet Pumo_ Riser inspection Survev:
Requested informal information from all i
BWRVIP members on inspection of welds in question (all 36 U. S. plants and 5 international plants responded) 5 plants examined riser welds by VT-3 in previous ~ inspections with no significant l
indications found I
5 plants examined portion of riser welds in Fall 96 by VT-1 BWRVIP EOC/NRC-1/16/97 37 i
/
~
\\
i Jet Pump Riser Cracking BWRVIP Plan for Closure:
Continue to monitor world wide inspection and cracking experience Update generic safety assessment as necessary j
Prepare jet pump assembly inspection and i
evaluation (l&E) guidelines as top priority in 1997; pursue development of other examination, repair and mitigation guidance as necessary Keep NRC informed of progress BWRVIP socenac.,,,e/97 30 t
I f
i Status of BWRVIP Response to Generic Letter 92-01 1
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BWRVIP EOC/NRC-1/16/97 39
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BWRVIP Response to j
Generic Letter 92-01 GL 92-01, Revision 1, Supplement 1, addressing reactor vessel structural integrity issued May 1995 BWRVIP provided a response to GL 92-01, Revision 1, Supplement 1, for BWR/2-6s j
August 1995 response (90 day) described f
actions taken or planned to locate data:
provide an assessment of RPV integrity issues using existing data by November 1995 continue to' work with industry groups and vessel fabricators to identify and
(
obtain additional data j
i BWRVIP EOC/NRC-1/16/97 40
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BWRVIP Response to Generic Letter 92-01
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Proposals from vessel fabricators estimate costs of $1M+ to retrieve and review records cost perhaps significantly greater than
$1M+
potential benefit of $1M+ effort in terms of identifying additional data is not apparent j
Thorough search conducted in late 1980s by EPRI to collect all available RPV materials data l
All known data for BWRs contained in EPRI databases RPVDATA and PREP 4. Both
\\
databases were updated in 1996.
BWRVIP i
EOC/NRC-1/16/97 42 I
/
\\
BWRVIP Response to Generic Letter 92-01 i
BWRVIP course of action:
" bounding" (not best estimate) assessment demonstrates no near term safety issue for BWR/2-6s continue to work with other industry groups to resolve data issues work with vessel fabricators to identify i
l data not previously transmitted to GE, BWR utilities and EPRI focus on data not located in " typical" places i
BWRVIP EOC/NRC-1/16/97 43
T l
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Status of RPV Shell Weld Inspection Recommendations l
i i
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I BWRVIP i
1 EOC/NRC-1/16/97 44 i
4 i
Status.of RPV Shell Weld Inspection Recommendations i
i BWRVIP Report "BWR RPV Shell Weld Inspection Recommendations (BWRViP-05)"
i submitted September 1995-1 irradiation embrittlement effects are greatly reduced j
i in BWRs compared to PWRs operating conditions like PWR pressurized thermal shock are not possible in BWRs the most limiting condition with respect to low I
temperature pressurization of a BWR vessel is the pressure test each outage j
l circumferential BWR RPV shell welds are much less risk significant than longitudinal welds j
i I
BWRVIP f
EOC/NRC-1/16/97 45 i
(
Status of RPV Shell Weld Inspection Recommendations NRC issued RAls on BWRVIP-05 in April and May 1996 BWRVIP response to RAls submitted in June 1996 July 11,1996 BWRVIP/NRC management meeting: suggestion was made that BWRVIP petition for rulemaking to revise 10CFR50.55a l
October 15,1996 BWRVIP/NRC working l
meeting held to discuss BWRVIP petition for rulemaking: approach for requesting an j
" alternative" to 10CFR50.55a identified i
BWRVIP EOC/NRC-1/16/97 46
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]
inspection Recommendations BWRVIP request for authorization of a technical alternative per 10CFR50.55at:aX3)( i) for BWRs submitted on October 29,1996 l
Case Probabilityof Cost ofInspection i
per Plant BWR Fleet inspect all shell welds 5.69 x 10*
$3.3M
$119M i
inspect Iong. welds only' 5.69 x 10*
$1.85M
$67M j
i
- alternative requested Awaiting NRC approval of request for
" alternative" i
BWRVIP EOC/NRC-1/16/97 47 i
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BWRVIP REPORTS /NRC REVIEW STATUS Submittal Initial NRC RAI/ Response SER Report Date Review Process issued Assessment:
- 1. shroud I&E, Rev. 0 9/94 complete complete 9/94
- 2. shroud I&E, Rev.1 4/95 complete complete 6/95
- 3. shroud I&E, Rev. 2 10/%
ongoing
- 5. safety assessment 10/95 5/96 12/96
- 6. GL 92-01, Rev.1, Sup.1 11/95 complete complete 10/%
- 7. shroud reinspection 2/%
5/96 10/96
- 8. SS crack growth 3/%
12/96 ongoing
- 9. core spray I&E 7/%
ongoing
- 10. core plate I&E 12/%
ongoing
- 11. top guide I&E 12/%
ongoing
- 12. jet pump riser 12/%
ongoing 13.SLC I&E 3/97
- 14. shroud support I&E 6/97
- 15. jet pump assembly I&E 6/97 16.CRD guide /stube tube I&E 9/97 17.In-core / dry tube I&E 9/97
- 19. Instrument Pen. I&E 12/97
- 20. Internals brackets I&E 12/97
- 21. Low alloy crack growth
~12/97
- 22. Ni-base crack growth 12/97
)
o Submittal Initial NRC RAI/ Response SER Reoort Dge Review Process Issued i
Insnection:
- 1. shroud NDE uncertainty 11/94 complete complete 6/95
- 2. RPV/ internals (BWRVIP-03) 11/95 ongoing
- 3. core spray visual 4/%
ongoing
- 4. SLC stds.
8/97
- 5. core spray UT 9/97
- 6. shroud support insp. stds.
12/97
- 7. jet pump assembly stds.
12/97
- 8. core plate stds.
12/97 7
- 9. top guide stds.
12/97 Repair:
i
- 1. shroud repair design criteria 9/94 complete complete 9/94
- 2. shroud repair design 10/95 complete complete 7/%
~
format / content
?
- 3. core spray repair design 9/%
ongoing i
criteria l
- 4. CRD roll expansion 11/%
ongoing
- 5. core spray replacement 2/97 design criteria
- 6. core spray overlay repair 2/97 t
- 7. weldability of irradiated 4/97 1
materials
- 8. underwater flux core 5/97 welding
- 9. ~ SLC repair criteria 8/97
' 10. jet pump repair criteria 12/97 l
- 11. top guide repair criteria 12/97
- 12. core plate repair criteria 12/97 i
9 e
=-__
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d-d Submittal Initial NRC RAI/ Response SER Report Date Review Process Issued i
Mitigation:
- 1. credit for mitigation 12/97 s
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1 Schedule of 1997 US BWR Outages j
l l
Based on information supplied by:
i GENE l
i BWRVIP Utilities i
BWRVIP EOC/NRC-1/16/97 49
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BWRVIP/NRC Management Meetina Summary
)
8 reports submitted since March 1996
=
12 more near term submittals planned for
=
high priority components BWRVIP continues to operate in proactive f
issue management mode with near term focus on high priority internal components Overall Program continues on target for high
=
priority items in 1997 and shifting to I
" maintenance mode" by end of 1998 Rapid BWRVIP response to emerging issues
=
demonstrated by quick response to observed jet pump riser cracking BWRVIP l
EOC/NRC-1/16/97 50 j
BWRVIP/NRC Management Meeting Summarv BWRVIP will continue to identify and develop proactive initiatives of high value to stay ahead of issues, e.g.
j Crack growth evaluations RPV shell weld inspection reductions
)
Underwater weld repair technology Noble Metal Chemical Addition Need to continue close schedule I
coordination between BWRVIP and NRC j
activities to ensure timely approval and implementation of remaining guidelines BWRVIP -
EOC/NRC-1/16/97 51
1 BWRVIP Utility Members U. S. Utilities Boston Edison Carolina Power & Light Centerior Comed Detroit Edison Entergy GPU Nuclear IES Utilities Blinois Power Nebraska Public Power District New York Power Authority Niagara Mohawk Power Company Northeast Utilities Northem States Power PECO Energy Pennsylvania Power & Light Public Service Electric & Gas Southern Nuclear TVA Vermont Yankee Washington Public Power Supply System International Utilities Japan:
Chubu Electric Power Company Chugoku Electric Power Company i
Japan Atomic Power Company 1
Tohoku Electric Power Company Tokyo Electric Power Company Mexico:
Comision Federal de Electricidad Sweden:
' Forsmarks Kraftgrupp AB OKG Aktiebolag Spain:
Iberdrola
1 BWRVIP Transmittals to NRC in 1996 1.
"BWR Core Shroud Inspection and Flaw Evaluation Guideline, Revision 2 4
(BWRVIP-01)," EPRI Report TR-107079, October 1996.
" Guidelines for Reinspection of BWR Core Shrouds (BWRVIP-07)," EPRI i
2.
l Report TR-105747, February 1996.
]
3.
" Evaluation of Crack Growth in BWR Stainless Steel RPV Internals l
(BWRVIP-14)," EPRI Report TR-105873, March 1996.
4.
Roll / Expansion Repair of Control Rod Drive and In-Core Instrument Penetrations in BWR Vessels (BWRVIP-17)," EPRI Report TR-1%712, November,1996.
5.
"BWR Vessel and Internals Project, BWR Core Spray Internals Inspection and Flaw Evaluation Guidelines (BWRVIP-18)," EPRI Report TR-106740, July 1996.
6.
" Internal Core Spray Piping and Sparger Repair Design Criteria (BWRVIP-19),"
EPRI Report TR-106893, September 1996.
j 7.
"BWR Core Plate Inspection and Flaw Evaluation Guideline (BWRVIP-25),"
EPRI Report TR-107284, December,1996.
8.
"BWR Top Guide Inspection and Flaw Evaluation Guidelines (BWRVIP-26),"
EPRI Report TR-107285, December,1996.
9.
" Assessment of BWR Jet Pump Riser Elbow to Tnermal Sleave Weld Cracking (BWRVIP-28)," EPRI Report TR-107667, December,1996.
- 10. " Standards for Visual Inspection of Core Spray Piping, Spargers, and Associated Components," Section 6A of BWRVIP-03, April 1996.
]
- 11. "BWRVIP Newsletters," February 29,1996.
- 12. "Non-Proprietary Version of BWR Vessel and Internal Project, Guidelines for Reinspection of BWR Core Shrouds (BWRVIP-07)," March 27,1996.
- 13. "Non-Proprietary version of: BWR Vessel and Internals Project, Evaluation of Crack Growth in BWR Stainless Steel RPV Internals (BWRVIP-14),"
March 29,1996.
- 14. " Summary of BWRVIP Technology Development tasks in Assessment and Mitigation Areas," April 29,1996.
-1 1/3/97
- 15. "Non-Proprietary version of BWR Vessel and Internals Project BWRVIP-03,04, 05,06,07,14," April 30,1996.
- 16. "BWRVIP Response to NRC Staff Concerns and Unresolved Items,"
May 17,1996.
- 17. " Schedule for BWRVIP Response to NRC Requests for Additonal Information," May 28,1996.
i
- 18. " Additional Response to NRC Staff Concerns and Unresolved Items,"
June 6,1996.
- 19. "BWRVIP Response to NRC Requests for Additional Information on l
BWRVIP-05," June 24,1996.
- 20. " Reclassification of a BWRVIP Report Submitted in Response to Generic Letter 92-01, Revision 1, Supplement 1," June 27,1996.
- 21. " Summary White Paper for July 11,1996 BWRVIP Meeting with NRC Management," June 28,1996.
- 22. " Intent to Submit a Petition for Rulemaking," September 20,1996.
- 23. " Request for Authorization of a Technical Alternative per 10CFR50.55a(a)(3)(i) for Boiling Water Reactors," October 29,1996.
- 24. " Clarifications to Core Shroud Reinspection Guidelines," July 17,1996.
- 26. "GE Services Information letter on Jet Pump Riser Pipe Cracking,"
December 13,1996.
- 27. " License Renewal Appendix to BWR Vessel and Internals Project, BWR Core i
Spray Internals Inspection and Flaw Evaluation Guidelines (BWRVIP-18),"
December 20,1996.
2 1/3/97 4
o BWRVIP Meetings with NRC in 1996 1.
EOC/NRC mangement meeting - March 19,1996.
2.
BWRVIP/NRC management meeting on RPV shell weld inspections -
July 11,1996.
3.
RPV shell weld inspection petition for rulemaking meeting -
October 15,1996.
4.
License renewal meeting - October 28,1996.
5.
BWRVIP Symposium - November 6-7,1996.
s
( BWR Vessel and Internals Project h i
Organization 3
i BWRVIP Executive Oversight Committee i
Integration inspection Assessment Mitigation Repair 6
i BWRVIP EOC/NRC-1/16/97 52 m.
m
+----
(
BWRVIP and NRC 3
i Committee Interfaces i
UTILITY
-Executive Chair COMMITTEE
-Technical Chair NRC EPRI INTEGRATION Open Virgilio Bilanin Wagoner (CP&L)
Carpenter INSPECTION Keaten (GPUN)
Sheron Lance Leonard (NMPC)
Wichman l
ASSESSMENT Terry (NMPC)
Sheron Carter Dyle (SNC)
Carpenter MITIGATION Jones (PP&L)
Sheron Gilman Wilson (PSE&G)
Wichman REPAIR Campbell (CP&L)
Sheron Bilanin McLeod (SNC)
Hermann i
/
4
\\
BWRVIP EOC/NRC-1/16/97 53
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SWRVIP-03 RPV Internets Examinetton Guidelines 11/10/95 L
S S
WM Under review by Brookhaven NL M91898 Section 6A - Stenderds for Visuet 04/16/96 mjb fag kok
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Final SE ECD 1 menth ef ter RAI response M95369 Examinetton of Core Spray Piping, Spergers and Misc. ra9w=1ents m
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04/02/96 06/24/96 Technicet review couplete M93925 Reconsnendations ses 05/20/96 OGC reviewing Alterristive RES Petition possible BWRVIP-06 Safety Assessment of SWR Reector 10/05/95 5
S L
05/21/96 12/20/96 under Review - NRC piens for scheduling M93926 Internets whk fsg kok and scope of other BWRVIP doctaments Meeting w/StatVIP on their expended bests for prioritiration 03/ /97 Final SE ECD 04/15/97 BWRVIP-07 Guidelines for R Inspection of SWR 02/29/M L
S 05/21/96 10/21/96 Under review - Final SE ECD 03/01/97 M94959 Core Shrouds idhk fag sjb BWR Internals Review Status Pese 1 of 6 02/04/97
I l
Appt.
REVIEv RAI TAC 8 TITLE Date ColeENTS EMCS EMES SRMB Issued Rec'd SWRVIP-08 BWR Vessel and Internets Project, 11/15/95 L
el 92-01 Rev. 1, Sig. 1 Response Sounding Assessment of SWR /2-6 Reactor 06/27/96 ble Letter to BCarter (EPRI) 01/01/97 Pressure Wesset Integrity Issues ess l
l SWRVIP-14 Evaluation of Crack Growth in eWR 03/18/96 L
12/09/96 under review by Argonne NL M94975 Steintess Steel RPV Internets hfe Finet SE Em month efter RAI response OSW..~ NW i
l EgyIP-1T Rott/ Expansion of Control Rod Drive 11/27/96 S
L S
fgf9F Imder Review l
M97373 and In-Core Instrument Penetrations in idik fng kek Finet SE Em 1 omnth efter RAI response BWR vessels Plant Specific Action - Nine Mlle Pof_nt 7
BWRVIP-18 Core Sprey Internets Inspection and 07/26/96 L
S S
01/16/97 under Review st96219 Flow Evetuation Guidelines idik fng kok Finst SE ECD 1 month efter RAI response 7
Appendix C, Demonstrettevi of 12/20/96 cec NOTE: App. C is first WW VIP ticense Compliance with Technicet Information ajb renewal mismittet - ECD 12/97
}
Requirements of License Renewat Rule l
BWRVIP-19 Internet Core Sprey Piping and Sperger 09/17/96 L
S S
01/16/97 under Review j
M96539 Repelr Deelen Criterie idik fag kek Finet SE ECD 1 month after RAI response i
cec h
I BWRVIP-25 Core Plate Inspection and Flow 12/27/96 L
S S
KM under Review M97802 Evolustion Guideline kjk fag kek Final SE ECD 1 month efter RAI response k
i OWRVI*-26 Top Guide Inspection and Flow 12/27/96 L
S L
MM under Review r
M97803 Evolustion Guideline kJk fag kek Finet SE ECO 1 month efter RAI response l
I l
BWRVIP-28 Assessment of BWR Jet Pig Rioer Elbow 12/19/96 L
3 L
WM under Review M%Kilif)isigf1egi M97815 to Thermal Steeve Weld cracking cec fag kek Final SE ECD 1 month efter RAI response p
In M97395 t
GL M-----
t I
L L
I BWR Internals Review Status Page 2 of 6 02/06/97
[
.j Appt.
REVIEW RAI TAC 8 TITLE Date C0fgENTs EMCs EMEg SRMg Issued Rec'd i
i i
NOTE: The followins docuesnts have not yet been endemitted by the gWRVIP for NRC staff review.
Att reviewers and Leed/stgiport aselgruents are tentative booed on the finet document.
Rats are expected to be issued within 2 months of sidunittet, with finet SE completed within 3 months of RAI response Core sprey Reptocement Design Criteria 02/97 Y s
L s
tek fag kek Core sprey overley Repelr 02/97 T L
s s
tek fag ket j
i i
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i BWR Internals Review Status Pope 6 of 6 02/04/97
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Keith R. Wichman The NRC staff agreed to consider holding a meeting of Regional inspectors and other interested NRC staff to coordinate NRC inspection and review activities associated with BWRVIP submittals.
The meeting concluded with the NRC staff encouraging the BWRVIP to continue to work cooperatively with the NRC staff.
Further meetings will be scheduled as needed.
dang.aj;' 16. 1997. BWRVIP Schedulina Meetina A meeting was held at the NRC's One White Flint North offices on January 17, 1
1997, with NRC staff and members of the BWRVIP to discuss scheduling of reviews related to the BWRVIP submittals. The meeting was held at the request of the NRC staff. Attachment 3 is the review matrix created from the meeting.
{
Attendees at this meeting are indicated on Attachment 1 by an asterisk.
j The BWRVIP has submitted 12 documents that are currently under NRC staff review, and is planning to submit an additional 28 documents over the next year. The NRC staff discussed the status of its present reviews of the 12
)
documents, including planned requests for additional information (RAls) that 1
will be required to complete several reviews.
Further, planned submittals j
were discussed and lead NRC staff reviewers were tentatively assigned.
Additionally, the BWRVIP discussed the research activities it has presently undertaken with regards to underwater weld overlay repairs of piping and underwater welding repairs of irradiated metals.
The NRC staff suggested that the BWRVIP and NRC share the results of its respective literature searches into this area to ensure that both the industry and the staff are reviewing the most current and relevant data.
Further discussions regarding research j
will be scheduled as needed.
The BWRVIP staff and the NRC staff agreed to continue to meet to discuss emerging technical issues, status of technical reviews and resource i
allocation.
Attachments:
1.
January 16, 1997, List of Attendees 1
2.
January 16, 1997, BWRVIP Handout 3.
January 17, 1997, Review Matrix DISTRIBUTION: see next page FTTle GClainas MEMayfield i
Centp;C PUBL.
RHWessman EMHackett NRR/EMCB Reading RAHermann DAJackson FJMiraglia/ACThadani MJVirgilio Allund BWSheron KAKavanagh DSkay DOCUMENT NAME: G:\\BWRVIP\\ VIP-0116.MTS
- See previous concurrence To receive a copy of this document, indicate in the box:
"C" - Copy without j
attachment "E" - Copy with attachment "N" - No copy i
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02/04/97 CN 02/04/97 02/06/97 02/11/97 OFFICIAL 1 RECORD; COPY i
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