ML13067A221
| ML13067A221 | |
| Person / Time | |
|---|---|
| Site: | Kewaunee  |
| Issue date: | 03/07/2013 |
| From: | Feintuch K Division of Operating Reactor Licensing |
| To: | Sly C Dominion Generation |
| References | |
| Download: ML13067A221 (7) | |
Text
NRR-PMDAPEm Resource From: Feintuch, Karl Sent: Thursday, March 07, 2013 2:28 PM To: Craig D Sly Cc: Tregoning, Robert; Carlson, Robert
Subject:
FW: DLR question re RES interest in Kewaunee samples - request by DORL PM Attachments: plant materials wish list 2013-03-07 .docx Attached is a wish list of items that would be valuable to retrieve from Kewaunee after permanent shutdown. It is the list that I received from Rob with some inserted header and footer information. The email sequence below explains the background that we discussed.
The next step would be to match items that are practical to acquire or to measure to schedule(s) of opportunities to obtain them from Kewaunee.
Any near-term, one-time only opportunities would be important to address soon to see if manpower and funding can be acquired in time.
Karl Feintuch From: Tregoning, Robert Sent: Thursday, March 07, 2013 7:51 AM To: Feintuch, Karl; Brady, Bennett Cc: Carlson, Robert
Subject:
RE: DLR question re RES interest in Kewaunee samples - request by DORL PM Karl:
Thanks for your efforts. Attached is the wish list that we put together for the Zion plant. We ended up getting containment samples, samples from the RPV and surveillance capsules and cabling from Zion. I agree with you that we need to put together a similar list for Kewaunee (and other plants that decide to decommission) so that we can have meaningful dialog about the possibility of getting components.
- Regards, Rob Robert Tregoning Technical Advisor for Materials US Nuclear Regulatory Commission 21 Church Street, M/S CS-5A24 Rockville, MD 20850 ph: 301-251-7662 Blackberry: 301-873-6393 fax: 301-251-7425 From: Feintuch, Karl Sent: Wednesday, March 06, 2013 4:44 PM To: Brady, Bennett Cc: Tregoning, Robert; Carlson, Robert
Subject:
RE: DLR question re RES interest in Kewaunee samples - request by DORL PM 1
On 3/5/2013 I spoke with Rob Tregoning and subsequently with Craig Sly of Dominion to establish a point of contact and initiate a conversation about the opportunity offered by Kewaunees forthcoming final defueling and subsequent decommissioning. (Kewaunees decommissioning is currently planned for 60 years. I directed Craig to Chuck Tomes, who Rob knows.
All parties recognize that any activity in this regard is distinct from and independent of decommissioning. It is simply that the plant and its components offer opportunities for assessing materials, if motivated parties can agree to address it.
I recollect that many of these plants did extensive photographic studies of components and installations during initial construction. Parties interested in visual evidence of material conditions decades after installation also have an opportunity to gather information.
I hope to establish a dialog among interested parties. The interested parties will determine if the value of the information justifies the financing that it will take.
Perhaps the next step would be to establish or retrieve a list comparable to Zion of components and materials of interest. Collection of some items might occur in May 2013. Others might not be collectable for decades.
Please ensure that anything that I receive for transmittal to Kewaunee is public and non-sensitive or has a redacted version.
Karl 415-3079 From: Brady, Bennett Sent: Monday, March 04, 2013 5:19 PM To: Feintuch, Karl
Subject:
FW: DLR question re RES interest in Kewaunee samples - request by DORL PM Thank you for your call.
FYI. Here is Rob Tregonings reply when I contacted him and Amy Hull in RES about possible interest in materials from Kewaunee.
Bennett Brady From: Tregoning, Robert Sent: Monday, March 04, 2013 2:08 PM To: Hull, Amy; Brady, Bennett Cc: Rao, Appajosula; Oberson, Greg; Burke, John
Subject:
RE: DLR question re RES interest in Kewaunee samples - request by DORL PM Amy/Bennett:
Id say that were definitely interested in possibly getting some internals materials. However, we need to have a lot more information before we know how worthwhile that material is compared to other ex-plant material that were getting. Also, in this era of declining budgets, we would need to partner with industry and possibly internationally because of the high cost of harvesting materials. As an agency, I could also see that we might have interest in a whole host of components such as containment samples, piping samples (especially DM welds), upper or bottom head penetrations, cabling/instrumentation, various active system components, vessel weld samples, etc. However, before we can really pursue we need to understand what Kewaunee might have that is particularly valuable.
2
The same question came up with Zion two years ago and at that time, Greg Oberson (I believe), coordinated the development of a list of active and passive components that we may be interested in now, and in the future. While this list is likely dated now, its a good start for compiling a possible shopping list. I did a quick scan of my computer for this list and couldnt find it, but I hope that Greg still has it readily available.
By the way, the one component that were definitely pursuing at this point is the surveillance capsule material.
- Regards, Rob Robert Tregoning Technical Advisor for Materials US Nuclear Regulatory Commission 21 Church Street, M/S CS-5A24 Rockville, MD 20850 ph: 301-251-7662 Blackberry: 301-873-6393 fax: 301-251-7425 From: Hull, Amy Sent: Monday, March 04, 2013 1:18 PM To: Tregoning, Robert; Burke, John Cc: Brady, Bennett
Subject:
DLR question re RES interest in Kewaunee samples - request by DORL PM Bennett just called and, if I got the message right, said she had a voice message from the Kewaunee PM in DORL who wanted to know if somebody in RES wanted to get samples (metallic, ?fuel cladding?) as it is decommissioned. The DORL PM wanted to have info from DLR re RES interest asap, in early March.
Is this something that we are interested in?
3
Hearing Identifier: NRR_PMDA Email Number: 623 Mail Envelope Properties (Karl.Feintuch@nrc.gov20130307142800)
Subject:
FW: DLR question re RES interest in Kewaunee samples - request by DORL PM Sent Date: 3/7/2013 2:28:08 PM Received Date: 3/7/2013 2:28:00 PM From: Feintuch, Karl Created By: Karl.Feintuch@nrc.gov Recipients:
"Tregoning, Robert" <Robert.Tregoning@nrc.gov>
Tracking Status: None "Carlson, Robert" <Robert.Carlson@nrc.gov>
Tracking Status: None "Craig D Sly" <craig.d.sly@dom.com>
Tracking Status: None Post Office:
Files Size Date & Time MESSAGE 5968 3/7/2013 2:28:00 PM plant materials wish list 2013-03-07 .docx 36738 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:
Recipients Received:
[This list was prepared for the Zion decommissioning and is a sample provided to Dominion Energy Kewaunee for discussion and adaptation - Karl Feintuch, USNRC, 7 March 2013]
Plant Materials Wish List Materials Proposed by RES, and Outline of Proposed Research
- 1. Reactor pressure vessel (RPV) stainless steel internal components (mainly from core shroud assembly; i.e., baffle plates, baffle-to-baffle bolts, baffle-to-former bolts)
- 2. RPV beltline weld, forgings/plates in beltline region.
- 3. RPV head nozzle(s) and J-groove welds
- 4. Bottom mounted instrumentation nozzles
- 5. Steam generator tubes
- 6. Piping, specifically dissimilar metal welds (DMWs)
- 7. Cast stainless steel (CASS) components, e.g., piping or elbows
- 8. Painted steel samples with all available coating types, e.g., pipe supports
- 10. Containment steel liner samples
- 11. Concrete samples
- 12. Neutron absorber materials from spent fuel pool
- 13. Electrical and I&C cables: 10 to 20 ft samples of every type of cable from inside containment
- 14. Electrical penetration modules
- 15. Small to medium size motors
- 16. Actuator assemblies, e.g., Limitorque
- 17. Limit switches, e.g., NAMCO
- 18. Solenoid valves, e.g., ASCO
- 19. Pressure transmitters, e.g., Rosemount Vessel
- 1. Reactor pressure vessel (RPV) stainless steel internal components (mainly from core shroud assembly; i.e., baffle plates, baffle-to-baffle bolts, baffle-to-former bolts) [A. Rao]
Vessel internals would be used to augment the cooperative research program with EPRI (and others) on degradation of properties of stainless steels in the RPV environment.
Properties to be measured include tensile strength, fracture toughness, and stress corrosion cracking (SCC) properties including crack growth rate. Mechanical property tests would be augmented with microstructural characterization.
- 2. RPV beltline weld, forgings/plates in beltline region. [M. Kirk]
Proposed research includes fracture toughness and other mechanical properties of material in the beltline region to assess RPV embrittlement.
- 3. RPV head nozzle(s) and J-groove welds [D. Dunn]
The Zorita RPV head is believed to have Alloy 690 CRDM nozzles and presents a rare opportunity to harvest Alloy 690 that has been in service. Research on nozzle and weld samples would include fatigue and PWSCC crack growth rate tests.
- 4. Bottom mounted instrumentation nozzles [D. Dunn]
Similarly to RPV head nozzles, BMI nozzles and welds would be tested to determine PWSCC resistance and mechanical properties.
- 5. Steam generator tubes [C. Harris]
Plant Materials Wish List 2013-03-07 Page 1
[This list was prepared for the Zion decommissioning and is a sample provided to Dominion Energy Kewaunee for discussion and adaptation - Karl Feintuch, USNRC, 7 March 2013]
NRC is interested in tube samples of the U-bend area of tubes, and sections cut at the expansion transition where the tubes emerge from the top of the tube sheet. Also, some pieces of the smallest radius u-bends are useful. Research would include structural integrity (burst and leak tests) and eddy current testing and destructive validation. Also, microstructural evaluation would be performed.
- 6. Piping, specifically dissimilar metal welds (DMWs) [D. Dunn / D. Rudland]
Proposed tests include mechanical properties and PWSCC resistance. Weld residual stresses also could be measured, preferably before and after cutting of welds for removal of components from the plant, in order to validate computational models currently being developed.
- 7. Cast stainless steel (CASS) components, e.g., piping or elbows [W. Norris]
Specimens would be used for mechanical property tests to assess aging-related degradation or embrittlement. Cast piping also would be used for validation of non-destructive examination techniques.
- 8. Painted steel samples with all available coating types, e.g., epoxy, inorganic zinc, alkyds, enamel. Potential samples may include pipe supports. [J. Burke]
Samples would be used to assess the durability and aging performance of painted steel surfaces in the containment environment.
- 9. Safety relief valves [ ?? ]
Target Rock 2- or 3-stage valves and Crosby valves are of interest. Proposed testing would be done to assess the temperature-dependent performance and failure modes under beyond design basis conditions.
Containment
- 10. Containment steel liner samples [D. Dunn]
Samples from the containment steel liner would be assessed to determine the presence, and approximate population, of paint blisters. If only a few blisters are present, these could mark locations of degradation that would be important to evaluate. If blisters are very numerous, however, analysis would likely be cost prohibitive.
- 11. Concrete samples [H. Graves]
If concrete core samples are available, they would be examined for evidence of carbonation or chloride ingress. If pore water is present, it would be sampled for chemical analysis. The objective is to assess the aging performance of concrete in a variety of locations and environments at the plant site.
Spent Fuel Pool
- 12. Neutron absorber materials from spent fuel pool [A. Pulvirenti]
Specimens would be very valuable for research on the following aspects of neutron absorber degradation: degradation mechanisms, rates of degradation including induction periods, prediction of neutron absorber behavior based on initial material qualification, and assessment of whether pool samples are representative of in-service neutron absorber panels.
Electrical Components
- 13. Electrical and I&C cables: 10 to 20 ft samples of every type of cable from inside containment [T. Koshy / S. Ray]
Plant Materials Wish List 2013-03-07 Page 2
[This list was prepared for the Zion decommissioning and is a sample provided to Dominion Energy Kewaunee for discussion and adaptation - Karl Feintuch, USNRC, 7 March 2013]
- 14. Electrical penetration modules [T. Koshy]
- 15. Small to medium size motors [T. Koshy]
- 16. Actuator assemblies, e.g., Limitorque [T. Koshy]
- 17. Limit switches, e.g., NAMCO [T. Koshy]
- 18. Solenoid valves, e.g., ASCO [T. Koshy]
- 19. Pressure transmitters, e.g., Rosemount [T. Koshy]
Electrical component samples would be valuable for assessing the degradation associated with temperature and radiation exposure. The plants 34 years of natural aging would provide a baseline for evaluating extended life for the license renewal period. Necessary background information includes any obtainable details of the service environment, procurement and manufacturers specification, and duty cycle (hours of service).
Plant Materials Wish List 2013-03-07 Page 3