ML12047A001

From kanterella
Revision as of 08:08, 12 November 2019 by StriderTol (talk | contribs) (Created page by program invented by StriderTol)
Jump to navigation Jump to search
2012/02/15 Davis-Besse Lr - Meetings 5a
ML12047A001
Person / Time
Site: Davis Besse Cleveland Electric icon.png
Issue date: 02/15/2012
From:
Office of Nuclear Reactor Regulation
To:
Division of License Renewal
References
Download: ML12047A001 (23)
v • d • e


Text

Davis-BesseNPEm Resource From: CuadradoDeJesus, Samuel Sent: Wednesday, February 15, 2012 6:58 PM To: Davis-BesseNPEm Resource

Subject:

meetings 5a Attachments: 2 9 2012.pdf; 7 14 2011.pdf; 7 15 2011.pdf; 7 19 2011 .pdf; 7 19 2011.pdf; 7 27 2011 .pdf; 8 2 2011.pdf; 8 4 2011.pdf; 8 22 2011.pdf; 10 27 2011 SB.pdf; 11-25 Engineering 2012 schedule (2).pdf; Clarification Questions Related to the Resposne to DB RAI 3.1.2.2-2 v3-1 7-26-2011.docx 1

Hearing Identifier: Davis_BesseLicenseRenewal_Saf_NonPublic Email Number: 3527 Mail Envelope Properties (0046140293E11F408991442DB4FE25CA68D46402D0)

Subject:

meetings 5a Sent Date: 2/15/2012 6:58:18 PM Received Date: 2/15/2012 6:58:21 PM From: CuadradoDeJesus, Samuel Created By: Samuel.CuadradoDeJesus@nrc.gov Recipients:

"Davis-BesseNPEm Resource" <Davis-BesseNPEm.Resource@nrc.gov>

Tracking Status: None Post Office: HQCLSTR01.nrc.gov Files Size Date & Time MESSAGE 3 2/15/2012 6:58:21 PM 2 9 2012.pdf 79783 7 14 2011.pdf 66758 7 15 2011.pdf 77682 7 19 2011 .pdf 92835 7 19 2011.pdf 76754 7 27 2011 .pdf 59269 8 2 2011.pdf 123362 8 4 2011.pdf 72071 8 22 2011.pdf 84329 10 27 2011 SB.pdf 115299 11-25 Engineering 2012 schedule (2).pdf 101568 Clarification Questions Related to the Resposne to DB RAI 3.1.2.2-2 v3-1 7-26-2011.docx 34085 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received:

Davis-BesseHearingFile Resource

Subject:

Davis Besse Telephone conference call (TLAAS) Phone: 888-790-3420 Participant passcode: 20614 Location: HQ-OWFN-11B06-12p Start: Thu 2/9/2012 10:30 AM End: Thu 2/9/2012 12:00 PM Show Time As: Tentative Recurrence: (none)

Meeting Status: Not yet responded Organizer: CuadradoDeJesus, Samuel Required Attendees: 'custerc@firstenergycorp.com'; 'dorts@firstenergycorp.com'; Hiser, Allen; Sydnor, Christopher; Davis-BesseHearingFile Resource; Parks, Benjamin Importance: High Phone: 888-790-3420 Participant passcode: 20614 TOPICS Section 4.2.1 Neutron Fluence o Neutron Fluence disposition not a TLAA Section 4.2.2 Upper Shelf Energy o RTNDT calculations o 64 ft-lbs USE value/Linde 80 welds o USAR supplement Section A.2.2.2 Section 4.2.4 Pressure-Temperature Limits o Clarification on how the fluence values were obtained at 1/4T and 3/4T for the RV nozzles and associated welds.

Section 4.2.6 Intergranular Separation (Underclad Cracking) o USAR supplement section A.2.2.6/RV head replacement SER Section 4.3.2.2.2 RVI Low-Cycle Fatigue) o cracking by fatigue aging effects 1

Davis-BesseHearingFile Resource

Subject:

Davis-Besse Teleconference on DRAI-Class 2/3 valves treated as Class 1 for design analysis Location: HQ-OWFN-09B06-12p Start: Thu 7/14/2011 1:00 PM End: Thu 7/14/2011 2:00 PM Show Time As: Tentative Recurrence: (none)

Meeting Status: Not yet responded Organizer: CuadradoDeJesus, Samuel Required Attendees: 'custerc@firstenergycorp.com'; 'dorts@firstenergycorp.com'; Medoff, James; yogen garud Resources: HQ-OWFN-11B02-12p; HQ-OWFN-11B06-12p; HQ-OWFN-09B02-12p New DRAI Yogen Garud o 1

Davis-BesseHearingFile Resource

Subject:

Davis-Besse Teleconference on DRAI-Class 2/3 valves treated as Class 1 for design analysis Location: HQ-OWFN-11B02-12p Start: Fri 7/15/2011 1:00 PM End: Fri 7/15/2011 2:00 PM Show Time As: Tentative Recurrence: (none)

Meeting Status: Not yet responded Organizer: CuadradoDeJesus, Samuel Required Attendees: 'custerc@firstenergycorp.com'; 'dorts@firstenergycorp.com'; Medoff, James; yogen garud Resources: HQ-OWFN-11B06-12p; HQ-OWFN-09B02-12p; HQ-OWFN-09B06-12p New DRAI Yogen Garud o Phone: 888-566-6569 Participant passcode: 58132 1

Davis-BesseHearingFile Resource

Subject:

DB Teleconference-applicants responses to RAI 3.5.2.2.1.7-1, RAI 3.3.2.18-1 and RAI B.2.1-2 Location: HQ-OWFN-10B06-12p Start: Tue 7/19/2011 10:30 AM End: Tue 7/19/2011 11:30 AM Show Time As: Tentative Recurrence: (none)

Meeting Status: Not yet responded Organizer: CuadradoDeJesus, Samuel Required Attendees: 'custerc@firstenergycorp.com'; 'dorts@firstenergycorp.com'; Min, Seung; Todd Mintz; Istar, Ata Resources: HQ-OWFN-09B02-12p; HQ-OWFN-09B06-12p; HQ-OWFN-08B02-12p; HQ-OWFN-08B06-12p; HQ-OWFN-07B02-12p; HQ-OWFN-07B06-12p DB RAI AMR DB RAI 101 SCC - Mincation AMR TR PHONE: 877-601-4486 Participant passcode: 35124 Follow-up RAI B.2.1-2 (Ata Istar)

Background:

The applicant responded to the RAI B.2.1-1 by proposing to revise Subsection 2.1.2 of the Davis Besse Nuclear Power Station (DBNPS) Surveillance Test Procedure DB-PF-03009, Revision 06, "Containment Vessel and Shielding Building Visual Inspection." Revised Subsection 2.1.2 shall state "Personnel who performed general visual examinations of the exterior surface of the Containment vessel and the interior and exterior surfaces of the Shielding Building shall meet the requirements for a general visual examiner in accordance with Nuclear Operating Procedure NOP-CC-5708, Written Practice for the Qualification and Certification of Nondestructive Examination Personnel."

Issue:

Element 5 "Detection of Aging Effects" in GALL AMP XI.S4 recommends the implementation of periodic in-service examinations for the containment structures by applying the requirements of subsections in ASME Section XI. The associated Subsection IWE-3510.1 of the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code),Section XI (1995), requires that "The general Visual Examination shall be performed by, or under the direction of, a Registered Professional Engineer or other individual, knowledgeable in the requirements for design, in-service inspections, and testing of Class MC and metallic liners of Class CC components."

Request:

To comply with the ASME Code,Section XI requirement, the associated Subsection IWE-3510.1 of ASME Code,Section XI (1995) code requirement must be referenced in the new revision of the DBNPS's Nuclear Operating Procedure and/or Surveillance Test Procedure.

1

Davis-BesseHearingFile Resource

Subject:

DB Teleconference-applicants responses to RAI 3.5.2.2.1.7-1 and RAI 3.3.2.18-1 Location: HQ-OWFN-10B06-12p Start: Tue 7/19/2011 10:30 AM End: Tue 7/19/2011 11:30 AM Show Time As: Tentative Recurrence: (none)

Meeting Status: Not yet responded Organizer: CuadradoDeJesus, Samuel Required Attendees: 'custerc@firstenergycorp.com'; 'dorts@firstenergycorp.com'; Min, Seung; Todd Mintz Resources: HQ-OWFN-09B02-12p; HQ-OWFN-09B06-12p; HQ-OWFN-08B02-12p; HQ-OWFN-08B06-12p; HQ-OWFN-07B02-12p; HQ-OWFN-07B06-12p DB RAI AMR DB RAI 101 SCC - Mincation AMR TR 1

Davis-BesseHearingFile Resource

Subject:

Davis-Besse Teleconference Scoping and Screening-abandoned equipment and ASTM standards for the Nuclear Safety-Related Protective Coatings Program Location: HQ-OWFN-10B06-12p Start: Wed 7/27/2011 1:30 PM End: Wed 7/27/2011 2:30 PM Show Time As: Tentative Recurrence: (none)

Meeting Status: Not yet responded Organizer: CuadradoDeJesus, Samuel Required Attendees: 'custerc@firstenergycorp.com'; dorts@firstenergycorp.com; Rogers, Billy; Obodoako, Aloysius Resources: HQ-OWFN-11B02-12p; HQ-OWFN-11B06-12p; HQ-OWFN-09B02-12p; HQ-OWFN-09B06-12p; HQ-OWFN-12B06-12p Phone: 888-946-3503 Participant passcode: 43739 1

Davis-BesseHearingFile Resource

Subject:

Davis-Besse Teleconference Location: HQ-OWFN-09B06-12p Start: Tue 8/2/2011 1:00 PM End: Tue 8/2/2011 2:00 PM Show Time As: Tentative Recurrence: (none)

Meeting Status: Not yet responded Organizer: CuadradoDeJesus, Samuel Required Attendees: 'custerc@firstenergycorp.com'; dorts@firstenergycorp.com; Klos, John; Gavula, James; Sun, Robert; Kalikian, Roger; Pham, Bo; Min, Seung; Kichline, Michelle Optional Attendees: Lane Howard; Elizabeth Trillo Resources: HQ-OWFN-10B06-12p; HQ-OWFN-11B06-12p; HQ-OWFN-13G04-20p; HQ-OWFN-11B02-12p; HQ-OWFN-09B02-12p; HQ-OWFN-07B06-12p; HQ-OWFN-08B02-12p; HQ-OWFN-08B06-12p; HQ-OWFN-12B06-12p; HQ-OWFN-07B02-12p; HQ-OWFN-07B04-25p; HQ-OWFN-06B04-25p; HQ-OWFN-06B06-10p; HQ-OWFN-09B06-12p Phone: 800-779-5247 Passcode: 34826 Topics for discussion:

Clarification uestions Relate

1) Follow-up Clarification (see attachment) Related to the DB Response to RAIs 3.1.2.2-1 and RAI 3.1.2.2-2
2) DB Response to RAI 3.3.2.3.14-1 Question RAI 3.3.2.3.14-1 In LRA Table 3.3.2-14, the applicant identified loss of material and cracking as aging effects for steel bolting exposed to an external environment of raw water.

As identified in EPRI NP-5769 and NUREG-1833, loss of pre-load for bolting can occur in any environment.

In LRA Table 3.3.2-14, the applicant did not identify loss of pre-load for steel bolting exposed to an external environment of raw water.

Justify why loss of pre-load is not identified as an aging effect for steel bolting in an environment of raw water.

RESPONSE RAI 3.3.2.3.14-1 Loss of pre-load is not identified as an aging effect requiring management for the submerged steel bolting in the Fire Protection System that is exposed to a raw water 1

environment, as described below.

The aging management review for the Fire Protection System was conducted with the guidance provided in EPRI Technical Report 1010639 (the "Mechanical Tools"). In accordance with the Mechanical Tools, loss of pre-load is an applicable aging effect as a result of thermal effects, gasket creep, embedment (including cyclic load embedment),

and/or self-loosening.

Loss of pre-load can be promoted by thermal effects (high temperature) through a process called stress relaxation. However, stress relaxation is only a concern at extremely high temperatures (above 700°F for low-alloy steels), although there may be bolting of some grades that could be susceptible to stress relaxation at temperatures slightly lower than 7000F. The submerged bolting in the Fire Protection System is associated with the diesel fire pump column that is submerged in raw water supplied by Lake Erie. The normal temperature of this water is no greater than 85 0F, which is well below the temperature at which stress relaxation occurs. Therefore, for the submerged steel bolting in the Fire Protection System, loss of pre-load due to thermal effects is not an aging effect requiring management.

Loss of pre-load may occur as a result of gasket creep. However, gasket creep has a very small effect on pre-load (2 - 5%) and occurs, and will be evident, very soon after initial loading (10 - 20 minutes). Therefore, for the submerged steel bolting in the Fire Protection System, loss of pre-load due to gasket creep is not an aging effect requiring management.

Loss of pre-load may occur after initial loading as surfaces (e.g., threads in the bolts and joint members), which are initially in contact only on high spots, settle in together, a process called embedment. However, the effect of embedment is considered to be small and to have minimal effect on the integrity of the bolted connection. Additionally, bolted connections subjected to large cyclic loads will embed and relax more than those under static loads. However, the diesel fire pump is normally in a standby mode, and, being located in a relatively stagnant atmospheric pool, is not subject to large thermal, vibrational, or pressure-induced cyclic loading. Therefore, for the submerged steel bolting in the Fire Protection System, loss of pre-load due to embedment is not an aging effect requiring management.

Loss of pre-load due to self-loosening may occur as a result of vibration, flexing of the joint, cyclic shear loads, thermal cycles and other factors. In addition to the discussions of these factors above, self-loosening is precluded by good bolting practices and, if it occurs, is usually detected and corrected early in the service life of the component, as during maintenance activities. Therefore, for the submerged steel bolting in the Fire Protection System, loss of pre-load due to self-loosening is not an aging effect requiring management.

3) DB Response to RAI B.2.34-01 Question RAI B.2.34-1

Background:

The preventive actions program element of Generic Aging Lessons Learned (GALL), Rev. 2, aging management program (AMP) XI.M3, Reactor Head Closure Stud Bolting, references the guidance outlined in Regulatory Guide (RG) 1.65, Materials and Inspections for Reactor Vessel Closure Studs, and NUREG-1339, Resolution of Generic Safety Issue 29: Bolting Degradation or Failure in Nuclear 2

Power Plants. AMP XI.M3 states that one of the preventive measures that can reduce the potential for stress-corrosion cracking includes using bolting material for closure studs that has an actual measured yield strength less than 150 ksi.

During its audit, the U.S. Nuclear Regulatory Commission (NRC or the staff) noted that the FirstEnergy Nuclear Operating Company's (FENOC or the applicant) program basis document for its Reactor Head Closure Studs Program states that the reactor head closure studs and nuts are manufactured from SA-540, Grade 23 material.

Issue:

License renewal application (LRA) Section B.2.34 and the applicant's program basis document do not include the preventive action of using stud materials with an actual measured yield strength level less than 150 ksi. The staff needs to confirm the actual measured yield strength of the applicant's reactor head closure stud material to determine whether the applicant's program is adequate to manage stress-corrosion cracking.

Request:

The staff requests the following information:

1) Clarify whether the actual measured yield strength of the reactor head closure stud material is less than 150 ksi. If the reactor head closure stud material has a measured yield strength level greater than or equal to 150 ksi, justify the adequacy of the AMP to manage stress-corrosion cracking in the high-strength material.

2)Clarify if preventive actions will be added to the Reactor Head Closure Studs Program that would preclude the future use of replacement closure stud bolting fabricated from material with actual measured yield strength greater than or equal to 150 ksi. If not, and in view of the greater susceptibility of the studs for stress-corrosion cracking, describe any preventative actions to avoid exposure of the studs to environments conducive to stress-corrosion cracking. Otherwise, justify why preventative measures to mitigate stress-corrosion cracking of high strength studs will not be required.

RESPONSE RAI B.2.34-1

1. As confirmed by the certificate of material test report (CMTR), the actual measured yield strength ranges from 151 to 159 ksi, and tensile strength ranges from 166 to 171 ksi for the Davis-Besse reactor head closure studs. The Davis-Besse stud material is SA-540 Grade B-23. As provided in Regulatory Guide 1.65, this material when tempered to a maximum tensile strength of 170 ksi, is relatively immune to stress corrosion cracking (SCC). In addition, the Reactor Head Closure Studs Program provides for examination of the reactor vessel stud assemblies in accordance with the examination and inspection requirements specified in the ASME B&PV Code,Section XI, Subsection IWB (1995 Edition through the 1996 Addenda) and approved ASME Code Cases. Specifically, each stud is volumetrically examined once per each 10-year Inservice Inspection Interval. No unacceptable indications were noted in these examinations.

Reactor Head Closure Studs Program preventative measures to mitigate SCC are listed as follows:

a. There are no metal platings applied to the closure studs, nuts, or washers.
b. A manganese-phosphate coating was applied to the studs, nuts and washers during fabrication to act as a rust inhibitor.
c. An enhancement to the program provides for selection of an alternate stable lubricant that is compatible with the fastener material and the 3

environment. A specific precaution against the use of compounds containing sulfur (sulfide), including molybdenum disulfide (MoS2), as a lubricant for the reactor head closure stud assemblies will be included in the program.

2. An enhancement will be added to the Reactor Head Closure Studs Program to preclude the future use of replacement closure stud bolting fabricated from material with actual measured yield strength greater than or equal to 150 ksi except for use of the existing spare reactor head closure stud bolting.

The exception to allow future use of the existing spare reactor head closure stud bolting (2 each) is justified based on Davis-Besse plant-specific operating experience of over 30 years that has not experienced SCC of the reactor head closure stud bolting. The existing spare bolting, if used as a future replacement, would experience less than 30 years of service to the end of the period of extended operation.

See the Enclosure to this letter for the revision to the DBNPS LRA.

4

Davis-BesseHearingFile Resource

Subject:

Davis-Besse Teleconference Location: HQ-OWFN-11B06-12p Start: Thu 8/4/2011 10:00 AM End: Thu 8/4/2011 11:00 AM Show Time As: Tentative Recurrence: (none)

Meeting Status: Not yet responded Organizer: CuadradoDeJesus, Samuel Required Attendees: Pham, Bo; Yee, On; Medoff, James; Min, Seung; Kalikian, Roger; Morey, Dennis; Mahoney, Michael; 'custerc@firstenergycorp.com'; dorts@firstenergycorp.com; Elizabeth Trillo; Jose, Benny; Bozga, John Resources: HQ-OWFN-11B02-12p Both RAIs have been revised. Below are the new versions.

Phone: 888-603-9705 Passcode: 27935 Topics:

1) To continue our previous discussion (8/2/11 Teleconference) on core support assembly (CSA) vent valve body and plenum cylinder reinforcing plate made of CASS (DB Response to RAIs 3.1.2.2-1 and RAI 3.1.2.2-2)

DB DRAI 3 1

-3 v8 8-2-2011

2) To discuss CUF and It analyses for large bore Class 1 valves {D-RAI 4.3.2.3.2 (Supplement)}

D-RAI 4 3 2 1 (Supplemen 1

Davis-BesseHearingFile Resource

Subject:

Davis-Besse Teleconference Location: HQ-OWFN-10B06-12p Start: Mon 8/22/2011 1:00 PM End: Mon 8/22/2011 2:00 PM Show Time As: Tentative Recurrence: (none)

Meeting Status: Not yet responded Organizer: CuadradoDeJesus, Samuel Required Attendees: Klos, John; custerc@firstenergycorp.com; dorts@firstenergycorp.com Resources: HQ-OWFN-11B02-12p; HQ-OWFN-11B06-12p Phone: 888-469-0933 Participant passcode: 64163 Topic: To discuss FENOCs 8/17/2011 response letter

  • Response to RAI 3.2.2.2.3.6-2 LRA Table 3.2.2-2, row 20 stainless steel piping components exposed to moist air are being managed for cracking by the One-Time Inspection Program. The AMR items cite generic note H. The AMR item also cites plant-specific note 0202, which states that the One-Time Inspection is being used to confirm the absence of aging effects or that aging is slow acting so as to not affect the subject component's intended function during the period of extended operation.

By letter dated May 2, 2011, the staff issued RAI 3.2.2.1.26-1 requesting that the applicant justify its use of the One-Time Inspection Program for managing these aging effects. In its response of June 3 the applicant stated that this item was deleted. However, the staff noted there was no evidence of this in the applicant letter dated May 24, 2011.

On this item there is no resolution if a proper periodic program will be used above the air water interface to manage this aging.

RAI 3.2.2.2.3.6-2, was issued requesting resolution of this component in the Containment Spray System.

In its response dated August 13, 2011, the applicant did not state for Table 3.2.2-2, row 20, stainless steel piping in moist air (internal) exposed to cracking Containment Spray System, whether that item was a) retained in the One-Time Inspection program, b) documented for deletion or c)updated with an aging management program.

The staff finds the applicants response not acceptable because the resolution concerning this line item is incomplete.

  • One Time Inspections-Supplemental Response Section A.1.30 is not in the enclosure and the teleconference in which this issue was discussed was held on 8/2/2011. The staff will like to clarify the reason why section A.1.30 wasnt amended and to clarify the date in which the teleconference was held.

1

2 Davis-BesseHearingFile Resource

Subject:

FW: Davis Besse shield building issue follow-up Location: DNMS Conference Room Start: Thu 10/27/2011 3:00 PM End: Thu 10/27/2011 4:30 PM Show Time As: Tentative Recurrence: (none)

Meeting Status: Not yet responded Organizer: Sanchez Santiago, Elba

Original Appointment-----

From: Sanchez Santiago, Elba Sent: Wednesday, October 26, 2011 6:25 AM To: Sanchez Santiago, Elba; Lupold, Timothy; Cameron, Jamnes; Wilson, Adam; Kimble, Daniel; Rutkowski, John; Hills, David; Rezai, Ali; Gonzalez, Hipolito; Thorp, John; Haskell, Russell; Nolan, Ryan; Mahoney, Michael; Hernandez, Pete; Mitlyng, Viktoria; Chandrathil, Prema; Neurauter, James; Cardona-Morales, Pedro; CuadradoDeJesus, Samuel; Zimmerman, Jacob; Thomas, George; Hoang, Dan; Logaras, Harral; Barker, Allan; Auluck, Rajender; Sheikh, Abdul; Lehman, Bryce; Morey, Dennis; Shear, Gary; OBrien, Kenneth; West, Steven; Reynolds, Steven; Burza, Justine; Snyder, Amy; Wiebe, Joel; Rihm, Roger; Bozga, John; Meghani, Vijay; Murphy, Martin; Stone, AnnMarie Cc: Miller, Barry

Subject:

Davis Besse shield building issue follow-up When: Thursday, October 27, 2011 2:00 PM-3:30 PM (GMT-06:00) Central Time (US & Canada).

Where: DNMS Conference Room When: Thursday, October 27, 2011 2:00 PM-3:30 PM (GMT-06:00) Central Time (US & Canada).

Where: DNMS Conference Room Note: The GMT offset above does not reflect daylight saving time adjustments.

  • ~*~*~*~*~*~*~*~*~*

shield bldg evelopment.pd This conference call is to further discuss the Davis-Besse Shield Building issue Location: DNMS Conference Room Time: 2:00 pm CT For those calling in, the bridge number is: 888-677-8529 Passcode - 12003 1

If you have any questions, feel free to contact me

Thanks, Elba M. Sanchez Santiago Reactor Engineer RIII/ DRS/ EB1 630-829-9715 2

Hol 26-Dec Hol 2-Jan 2012 9-Jan Hol 16-Jan 23-Jan 30-Jan 6-Feb 13-Feb Hol 20-Feb 27-Feb 5-Mar PI TI-182 Prep PI TI-182 O/S PI TI=-182 Doc DA TI-182 Prep DA TI-182 O/S DA TI-182 Doc Bilik PU Audit PU Audit PU Audit PU Audit PU Audit P-DRE-Mod Mod-O-DRE Mod-I-DRE Mod-O-DRE Bozga AL DB TI-182 Prep DB TI-182 O/S DB TI-182 Doc HX Design TR Bwd TI-182 Prep Bwd TI-182 O/S Bwd TI-182 Doc Holmberg New Orleans 16-17 Jones D QC TI-182 Prep QC TI-182 O/S QC TI-182 Doc LAS-1 ISI Prep LAS-1 ISI O/S LAS-1 ISI Doc Fermi ISI Prep QC-2 ISI Prep Meghani Cook ISFSI Pad Cook ISFSI Pad Cook ISFSI Pad Cook ISFSI Cook ISFSI Cook ISFSI Stability Calcs Stability Calcs Stability Calcs Neurauter Cook ISFSI HL Cook ISFSI HL Cook ISFSI HL Cook ISFSI HL Cook ISFSI HL Sanchez AL Dres TI-182 Prep Dres TI-182 O/S Dres TI-182 Doc Byron TI-182 Prep Byron TI-182 O/S R-904P Byron TI-182 Doc P-HS-Per HS-O-Per D-HS-Per Santiago Doc PB LV-3 Al-30 Cook TI-182 Prep Cook TI-182 O/S Cook TI-182 Doc Kew TI-182 Prep Kew TI-182 O/S Kew Ti-182 Doc PI-2 ISI Prep PI-2 ISI PI-2 ISI PI-2 ISI Shaikh Hol 26-Dec Hol 2-Jan 2012 9-Jan Hol 16-Jan 23-Jan 30-Jan 6-Feb 13-Feb Hol 20-Feb 27-Feb 5-Mar AMS-AL-30 AMS-AL AMS-Dres-25,26 AMS-Dre-10 AL P-Per-PIR PIR-O-Per PIR-I-Per PIR-O-Per D-PIR-Per RIO assist P-LR-Pal Brown AL AL AL AL-16,17 TTC TTC TTC TTC TTC Corujo AL AL P-Dre-TI177 MUG/AUG TI177-O-Dre TI177-I-Dre TI177-O-Dre D-TI177-Dre D-TI177-Dre Dunlop AL AL P-Cook-TI177 TI177-O-Cook TI177-I-Cook TI177-O-Cook D-TI177-Cook P-HS-Per HS-O-Per D-HS-Per Feliz AL TTC TTC TTC TTC TTC Jones L AL P-Dre-TI177 MUGAUG TI177-O-Dre TI177-I-Dre TI177-O-Dre D-TI177-Dre Jones M RIO assist By/Bwd Followup By/Bwd Followup By/Bwd Followup By/Bwd Followup P-Mon-CDBI Jose Carl - Ops AL P-PAL-PIR PIR-O-PAL PIR-I-PAL PIR-O-PAL D-PIR-PAL AL Prep DB PI&R ODwyer AL P-PAL-PIR PIR-O-PAL PIR-I-PAL PIR-O-PAL D-PIR-PAL P-LR-Pal AL Sheldon AL - 8 D-CDBI-Perry D-CDBI-Perry P-Cook-TI177 TI177-O-Cook TI177-I-Cook TI177-O-Cook D-TI177-Cook D-TI177-Cook Tilton Hol 26-Dec Hol 2-Jan '12 9-Jan Hol 16-Jan 23-Jan 30-Jan 6-Feb 13-Feb Hol 20-Feb 27-Feb 5-Mar P-FER-Mod P-FER-Mod Mod-O-FER Mod-I-FER Mod-O-FER D-Mod-FER D-Mod-FER 2012 Engineering Schedule - 11/25/11 Dahbur AL AL P-DRE-Mod P-DRE-Mod Mod-O-DRE Mod-I-DRE Mod-O-DRE Falevits AL P-FER-Mod Mod-O-FER Mod-I-FER Mod-O-FER D-Mod-FER Gilliam P-FER-Mod Mod-O-FER Mod-I-FER Mod-O-FER D-Mod-FER Hafeez obs obs obs obs obs AL P-DA-FP P-O-DA-FP P-DA-FP FP-O-DA FP-I-DA FP-O-DA D-FP-DA D-FP-DA Hausman AL AL P-FER-Mod Mod-O-FER Mod-I-FER Mod-O-FER D-Mod-FER P-PER-FP Langstaff AL-8 AL AL P-O-DA-FP P-DA-FP FP-O-DA FP-I-DA FP-O-DA D-FP-DA Munir AL AL P-DRE-Mod Mod-O-DRE Mod-I-DRE Mod-O-DRE Szwarc P-O-DA-FP P-DA-FP FP-O-DA FP-I-DA FP-O-DA D-FP-DA Winter 2/15/2012 6:51 PM

12-Mar 19-Mar 26-Mar 2-Apr 9-Apr 16-Apr 23-Apr 30-Apr 7-May 14-May 21-May R-800 LR-O-QC LR-O-QC Kew ISI Prep Kew ISI Kew ISI Kew ISI Kew ISI Kew ISI Kew ISI Doc Bilik HQ P-Kew-LR LR-O-Kew LR-O-Kew LR-O-Kew D-LR-Kew D-LR-Kew D-LR-Kew D-Mod-DRE E-116 TR Fermi HL Prep Fermi HL O/S Fermi HL I/O Fermi HL O/S Bozga WK - HQ DB ISI Prep Bwd-1 ISI Prep PM for Eng. TR Bwd-1 ISI Bwd-1 ISI Bwd-1 ISI Bwd-1 ISI Bwd-1 ISI Doc AL-WK DB ISI Holmberg FL 2-4 Jones D QC-2 ISI O/S QC-2 ISI O/S QC-2 ISI Doc Fermi ISI O/S Fermi ISI Doc Pal ISI Pal ISI Pal ISI Pal ISI Pal ISI Doc LR-O-QC LR-O-QC Pal ISI Prep Meghani P-DRE-PIR PIR-O-DRE PIR-I-DRE PIR-O-DRE D-PIR-DRE Zion ISFSI Zion ISFSI Zion ISFSI Zion ISFSI Neurauter E-116 TR P-Turkey-LR LR-O-Turkey WK - HQ Sanchez Cook-2 ISI Prep Cook-2 ISI Cook-2 ISI Cook-2 ISI Cook-2 ISI Cook-2 ISI Cook-2 ISI Cook-2 ISI Doc P-By-CDBI CDBI-O-By CDBI-I-By Santiago PI-2 ISI PI-2 ISI E-116 TR PI-2 ISI Doc Bwd-1 ISI-L Bwd-1 ISI-L Bwd-1 ISI-L Bwd-1 ISI-L Bwd-1 ISI Doc-L Shaikh WK - HQ Bwd-1 ISI Prep-L 12-Mar 19-Mar 26-Mar 2-Apr 9-Apr 16-Apr 23-Apr 30-Apr 7-May 14-May 21-May RIC-LR AMS at Monti AMS at Kew LR-O-Pal D-LR-Pal AL P-By-CDBI CDBI-O-By CDBI-I-By Brown TTC TTC P.B.- Drill (4/17) P-Fer-TI177 TI177-O-Fer TI177-I-Fer Corujo AL AL P.B.- Drill (4/17) P-By-CDBI P-By-CDBI CDBI-O-By CDBI-I-By Dunlop P-Mon-CDBI CDBI-O-Mon CDBI-I-Mon CDBI-I-Mon CDBI-O-Mon CDBI-I-Mon CDBI-O-Mon D-CDBI-Mon Feliz AL TTC TTC AL P-HS-Kew HS-O-Kew D-HS-Kew Jones L P-Mon-CDBI CDBI-O-Mon CDBI-I-Mon CDBI-I-Mon CDBI-O-Mon CDBI-I-Mon CDBI-O-Mon D-CDBI-Mon Jones M TI-177 TI-177 TI-177 TI-177 TI-177 TI-177 TI-177 P-Mon-CDBI CDBI-O-Mon CDBI-I-Mon CDBI-I-Mon CDBI-O-Mon CDBI-I-Mon CDBI-O-Mon D-CDBI-Mon D-CDBI-Mon P-O-PI-FP Jose Carl - Ops Carl - Ops Carl - Ops Carl - Ops Carl - Ops Carl - Ops Carl - Ops Carl - Ops Carl - Ops DB PI&R sample Doc DB PI&R Al-6 AL 9-11 P-HS-Kew HS-O-Kew D-HS-Kew ODwyer LR-O-Pal D-LR-Pal P-Kew-LR LR-O-Kew LR-O-Kew LR-O-Kew D-LR-Kew D-LR-Kew P-Turkey-LR LR-O-Turkey Sheldon AL somethime P-QC-LR LR-O-QC LR-O-QC LR-O-QC D-LR-QC SF-182 AL-11 AL AL-21, 25 Tilton AL-6 AL-9 12-Mar 19-Mar 26-Mar 2-Apr 9-Apr 16-Apr 23-Apr 30-Apr 7-May 14-May 21-May P-PB-Mod P-PB-Mod Mod-O-PB Mod-I-PB Mod-O-PB D-Mod-PB D-Mod-PB 2012 Engineering Schedule - 11/25/11 Dahbur D-Mod-DRE D-Mod-DRE P-DRE-PIR PIR-O-DRE PIR-I-DRE PIR-O-DRE D-PIR-DRE P-PI-FP P-O-PI-FP Falevits P-Mon-CDBI CDBI-O-Mon CDBI-I-Mon CDBI-I-Mon CDBI-O-Mon CDBI-I-Mon CDBI-O-Mon D-CDBI-Mon Gilliam mock board cert board Hafeez P-PB-Mod Mod-O-PB Mod-I-PB Mod-O-PB D-Mod-PB Hausman P-O-PER-FP P-PER-FP FP-O-PER FP-I-PER FP-O-PER D-FP-PER D-FP-PER P-By-CDBI CDBI-O-By CDBI-I-By Langstaff ops ops ops P-O-PER-FP P-PER-FP FP-O-PER FP-I-PER FP-O-PER D-FP-PER Munir D-Mod-DRE P-PB-Mod Mod-O-PB Mod-I-PB Mod-O-PB D-Mod-PB Szwarc P-O-PER-FP P-PER-FP FP-O-PER FP-I-PER FP-O-PER D-FP-PER P-O-PI-FP Winter 2/15/2012 6:51 PM

Hol 28-May 4-Jun 11-Jun 18-Jun 25-Jun Hol 02-Jul 9-Jul 16-Jul 23-Jul 30-Jul 6-Aug Seminar? AL-WK AL-WK P-Oconee-LR LR-O-Oconee Bilik Fermi HL Doc Seminar? P-HS-LaS HS-O-LaS D-HS-LaS Bozga

???  ???  ???

DB ISI Seminar? DB ISI R-904B DB ISI Doc Pal TI-182 Prep Pal TI-182 O/S Pal TI-182 Doc Holmberg Jones D Seminar? AL-WK AL-WK AL-WK P-QC-PIR Meghani Seminar? Reserved Reserved Reserved Reserved Reserved Reserved R-904P Neurauter LR-I-Turkey LR-O-Turkey D-LR-Turkey Sanchez CDBI-O-By Seminar? CDBI-O-By D-CDBI-By AL-WK AL-WK AL-WK PI PI&R Prep PI PI&R O/S PI PI&R I/O PI PI&R O/S Santiago LaSalle-Drill (tent)

AL-WK Seminar? AL-WK AL-WK P-HS-Pal HS-O-Pal D-HS-Pal P-HS-PI Shaikh Hol 28-May 4-Jun 11-Jun 18-Jun 25-Jun Hol 02-Jul 9-Jul 16-Jul 23-Jul 30-Jul 6-Aug AMS at By LaSalle - EP (8/1) AMS at Cook (gov liason)

CDBI-O-By CDBI-I-By CDBI-O-By D-CDBI-By P-Cook-CDBI CDBI-O-Cook CDBI-I-Cook CDBI-O-Cook Brown TI177-O-Fer D-TI177-Fer AL AL AL P-Cook-CDBI CDBI-O-Cook CDBI-I-Cook CDBI-O-Cook Corujo Seminar?

CDBI-O-By CDBI-I-By CDBI-O-By D-CDBI-By D-CDBI-By P-DB-CDBI P-DB-CDBI Dunlop Seminar Chuck Chuck P-HS-DA HS-O-DA D-HS-DA P-LaS-TI177 TI177-O-LaS TI177-I-LaS Feliz Seminar? P-CLI-Mod AL Mod-O-CLI Mod-I-CLI Mod-O-CLI D-Mod-CLI P-LaS-TI177 TI177-O-LaS TI177-I-LaS Jones L Seminar? P-HS-Pal HS-O-Pal D-HS-Pal LaSalle - EP (8/1) P-DB-CDBI Jones M P-PI-FP FP-O-PI FP-I-PI FP-O-PI D-FP-PI LaSalle - EP (8/1) P-DB-CDBI Jose AL 5-8 P-HS-DA HS-O-DA D-HS-DA P-HS-LaS HS-O-LaS D-HS-LaS P-HS-PI ODwyer LR-I-Turkey LR-O-Turkey TTC D-LR-Turkey AL P-Oconee-LR LR-O-Oconee Sheldon TTC??????

TTC-BWR TENT AL-15 TENT AL-18 AL-5, 6 P-Cook-CDBI P-Cook-CDBI CDBI-O-Cook CDBI-I-Cook CDBI-O-Cook Tilton AL-9 Randy-Ops Hol 28-May 4-Jun 11-Jun 18-Jun 25-Jun Hol 02-Jul 9-Jul 16-Jul 23-Jul 30-Jul 6-Aug P-O-QC-FP P-QC-FP FP-O-QC FP-I-QC FP-O-QC D-FP-QC 2012 Engineering Schedule - 11/25/11 Dahbur P-PI-FP FP-O-PI FP-I-PI FP-O-PI D-FP-PI D-FP-PI P-O-BWD-FP P-BWD-FP FP-O-BWD Falevits Seminar? P-CLI-Mod Mod-O-CLI Mod-I-CLI Mod-O-CLI D-Mod-CLI P-QC-PIR Gilliam Seminar?

Hafeez P-QC-FP P-O-QC-FP P-QC-FP FP-O-QC FP-I-QC FP-O-QC D-FP-QC Hausman AL 15 AL AL 25 CDBI-O-By CDBI-I-By CDBI-O-By D-CDBI-By P-O-BWD-FP P-BWD-FP FP-O-BWD Langstaff ops ops Al 20-21 AL AL AL AL AL 23-25 Seminar? P-CLI-Mod P-CLI-Mod Mod-O-CLI Mod-I-CLI Mod-O-CLI D-Mod-CLI D-Mod-CLI Munir AL AL AL P-BWD-PIR PIR-O-BWD PIR-I-BWD PIR-O-BWD D-PIR-BWD P-BWD-FP P-O-BWD-FP P-BWD-FP FP-O-BWD Szwarc AL P-PI-FP FP-O-PI FP-I-PI FP-O-PI D-FP-PI P-O-QC-FP P-QC-FP FP-O-QC FP-I-QC FP-O-QC D-FP-QC Winter 2/15/2012 6:51 PM

13-Aug 20-Aug 27-Aug Hol 03-Sep 10-Sep 17-Sep 24-Sep 1-Oct Hol 8-Oct 15-Oct 22-Oct LR-I-Oconee LR-O-Oconee D-LR-Oconee PI-1 ISI Prep PI-1 ISI PI-1 ISI PI-1 ISI PI-1 ISI Bilik P-PI-LR LR-O-PI LR-O-PI LR-O-PI LR-O-PI MONT PI&R Prep MONT PI&R O/S MONT PI&R I/O MONT PI&R O/S MONT PI&R Doc Bozga AL-WK AL-WK P-HS-QC HS-O-QC D-HS-QC Bwd-2 ISI Prep-L Bwd-2 ISI-L Bwd-2 ISI-L Holmberg Jandovitz Asst. Jandovitz Asst. Jandovitz Asst.

Jones D PIR-O-QC PIR-I-QC PIR-O-QC D-PIR-QC DA ISI Prep DA ISI O/S DA ISI O/S DA ISI Doc P-DA-LR LR-O-DA LR-O-DA D-DA Doc Meghani P-LAS-Mod Mod-O-LAS Mod-I-LAS Mod-O-LAS D-Mod-LAS P-QC-LR LR-O-QC Neurauter Zion ISFSI Zion ISFSI R-904B Zion ISFSI Heavy Loads Heavy Loads Heavy Loads Sanchez PI PI&R Doc E-116 BYR-1 ISI Prep-L BYR-1 ISI-L BYR-1 ISI-L BYR-1 ISI-L BYR-1 ISI-L BYR-1 ISI Doc-L P-QC-LR LR-O-QC Santiago HS-O-PI D-HS-PI BYR-1 ISI Prep BYR-1 ISI BYR-1 ISI BYR-1 ISI PB-2 Prep PB-2 ISI PB-2 ISI PB-2 ISI Shaikh P-PB-LR LR-O-PB LR-O-PB LR-O-PB 13-Aug 20-Aug 27-Aug Hol 03-Sep 10-Sep 17-Sep 24-Sep 1-Oct Hol 8-Oct 15-Oct 22-Oct AMS at Cook AMS at DB Perry EP CDBI-I-Cook CDBI-O-Cook D-CDBI-Cook P-Kew-PIR PIR-O-Kew PIR-I-Kew PIR-O-Kew D-PIR-Kew Brown CDBI-I-Cook CDBI-O-Cook D-CDBI-Cook P-Per-TI177 TI177-O-Per TI177-I-Per TI177-O-Per D-Per-TI177 P-QC-LR LR-O-QC Corujo CDBI-O-DB CDBI-I-DB CDBI-O-DB CDBI-I-DB CDBI-O-DB D-CDBI-DB D-CDBI-DB P-DB-TI177 TI177-O-DB TI177-I-DB Dunlop Chuck Chuck Chuck Chuck Chuck Chuck TI177-O-LaS D-TI177-LaS D-TI177-LaS AL P-QC-LR LR-O-QC Feliz TI177-O-LaS D-TI177-LaS P-HS-Fer AL HS-O-Fer D-HS-Fer Perry EP P-DB-TI177 TI177-O-DB TI177-I-DB Jones L CDBI-O-DB CDBI-I-DB CDBI-O-DB CDBI-I-DB CDBI-O-DB D-CDBI-DB AL - 28 AL P-PI-LR LR-O-PI LR-O-PI Jones M CDBI-O-DB CDBI-I-DB CDBI-O-DB CDBI-I-DB CDBI-O-DB D-CDBI-DB P-PB-LR LR-O-PB LR-O-PB Jose outage HS-O-PI D-HS-PI AL 28-31 P-HS-Fer HS-O-Fer D-HS-Fer AL P-QC-LR LR-O-QC ODwyer LR-I-Oconee LR-O-Oconee D-LR-Oconee Perry EP P-DA-LR LR-O-DA LR-O-DA Sheldon outage CDBI-I-Cook CDBI-O-Cook D-CDBI-Cook D-CDBI-Cook AL-5 P-QC-LR P-QC-LR LR-O-QC Tilton Randy-Ops AL-31 Perry EP team 13-Aug 20-Aug 27-Aug Hol 03-Sep 10-Sep 17-Sep 24-Sep 1-Oct Hol 8-Oct 15-Oct 22-Oct P-LAS-Mod P-LAS-Mod Mod-O-LAS Mod-I-LAS Mod-O-LAS D-Mod-LAS D-Mod-LAS 2012 Engineering Schedule - 11/25/11 Dahbur FP-I-BWD FP-O-BWD D-FP-BWD P-Kew-CDBI CDBI-O-Kew CDBI-I-Kew CDBI-O-Kew CDBI-I-Kew Falevits PIR-O-QC PIR-I-QC PIR-O-QC D-PIR-QC P-QC-LR LR-O-QC Gilliam P-Kew-PIR PIR-O-Kew PIR-I-Kew PIR-O-Kew D-PIR-Kew Hafeez D-FP-QC P-Kew-CDBI P-Kew-CDBI CDBI-O-Kew CDBI-I-Kew CDBI-O-Kew CDBI-I-Kew Hausman AL 23 AL AL AL 10 Bruce-Ops Bruce-Ops Bruce-Ops Bruce-Ops Bruce-Ops Bruce-Ops FP-I-BWD FP-O-BWD D-FP-BWD P-PAL-FP P-O-PAL-FP P-PAL-FP FP-O-PAL Langstaff P-LAS-Mod Mod-O-LAS Mod-I-LAS Mod-O-LAS D-Mod-LAS P-O-PAL-FP P-PAL-FP FP-O-PAL Munir AL FP-I-BWD FP-O-BWD D-FP-BWD D-FP-BWD P-Kew-CDBI CDBI-O-Kew CDBI-I-Kew CDBI-O-Kew CDBI-I-Kew Szwarc AL AL P-MON-PIR PIR-O-MON PIR-I-MON PIR-O-MON D-PIR-MON P-O-PAL-FP P-PAL-FP FP-O-PAL Winter 2/15/2012 6:51 PM

29-Oct 5-Nov Hol 12-Nov Hol 19-Nov 26-Nov 3-Dec 10-Dec 17-Dec Hol 24-Dec Hol 31-Dec PI-1 ISI PI-1 ISI Doc Seminar Eng Sem 11,12 Bilik LR-O-PI D-PI-LR R-704P Seminar Eng Sem 11,12 Bozga Bwd-2 ISI-L Bwd-2 ISI Doc-L Seminar Eng Sem 11,12 AL-WK Holmberg Jandovitz Asst. Jandovitz Asst.

Jones D DRES ISI Prep DRES ISI O/S DRES ISI Doc MontTI-182 Prep TI-182 O/S Seminar Eng Sem 11,12 TI-182 Doc Mont Mont Meghani LR-I-QC LR-O-QC D-LR-QC Seminar Eng Sem 11,12 Neurauter Zion ISFSI Zion ISFSI Zion ISFSI Seminar Eng Sem 11,12 Heavy Loads Heavy Loads Heavy Loads Sanchez LR-I-QC LR-O-QC D-LR-QC P-HS-Cook HS-O-Cook D-HS-Cook Eng Sem 11,12 AL-WK AL-WK Santiago PB-2 ISI PB-2 ISI Doc Clin TI-182 Prep TI-182 O/S Seminar Eng Sem 11,12 TI-182 Doc Shaikh LR-O-PB D-LR-PB Clin Clin 29-Oct 5-Nov Hol 12-Nov Hol 19-Nov 26-Nov 3-Dec 10-Dec 17-Dec Hol 24-Dec Hol 31-Dec AMS at Kew AMS at QC AMS at PB AL AL Eng Sem 11,12 AL AL AL Brown LR-I-QC LR-O-QC D-LR-QC RESERVED RESERVED RESERVED Eng Sem 11,12 AL AL Corujo TI-177 Closure TI-177 Closure TI-177 Closure TI177-O-DB D-TI177-DB D-TI177-DB P-HS-Cook HS-O-Cook D-HS-Cook Eng Sem 11,12 AL AL Dunlop LR-I-QC LR-O-QC D-LR-QC RESERVED RESERVED RESERVED Eng Sem 11,12 Feliz AL-23 TI-177 Closu TI-177 Closure TI-177 Closure TI177-O-DB D-TI177-DB P-HS-PB HS-O-PB AL D-HS-PB Jones L LR-O-PI D-LR-PI RESERVED RESERVED RESERVED Eng Sem 11,12 Jones M TI-177 Closure TI-177 Closure TI-177 Closure LR-O-PB D-LR-PB Seminar Eng Sem 11,12 Jose LR-I-QC LR-O-QC D-LR-QC P-HS-PB HS-O-PB D-HS-PB Eng Sem 11,12 AL AL ODwyer LR-O-DA D-LR-DA Seminar Eng Sem 11,12 AL Sheldon LR-I-QC LR-O-QC D-LR-QC AL 21-23 D-LR-QC Seminar Eng Sem 11,12 AL-21 AL AL Tilton I/O 31? Al-27 29-Oct 5-Nov Hol 12-Nov Hol 19-Nov 26-Nov 3-Dec 10-Dec 17-Dec Hol 24-Dec Hol 31-Dec Seminar Eng Sem 11,12 2012 Engineering Schedule - 11/25/11 Dahbur CDBI-O-Kew D-CDBI-Kew Seminar Eng Sem 11,12 Falevits LR-I-QC LR-O-QC D-LR-QC Seminar Eng Sem 11,12 Gilliam Seminar Eng Sem 11,12 Hafeez CDBI-O-Kew D-CDBI-Kew D-CDBI-Kew Seminar Eng Sem 11,12 Hausman Bruce-Ops Bruce-Ops Bruce-Ops AL AL FP-I-PAL FP-O-PAL D-FP-PAL D-FP-PAL Seminar Eng Sem 11,12 Langstaff FP-I-PAL FP-O-PAL D-FP-PAL Seminar Eng Sem 11,12 Munir CDBI-O-Kew D-CDBI-Kew Seminar Eng Sem 11,12 Szwarc FP-I-PAL FP-O-PAL D-FP-PAL Seminar Eng Sem 11,12 Winter 2/15/2012 6:51 PM

Follow-up Clarification Related to the DB Response to RAI 3.1.2.2-2 June 26, 2011

Background

In the third request item of RAI 3.1.2.2-2, the staff requested that the applicant describe the functional groups for the following two components that are addressed in LRA Table 3.1.2-2: (1) core support assembly (CSA) vent valve body, and (2) plenum cylinder reinforcing plate. The staff also requested that if existent, the applicant describe their link relationships (such as primary/expansion link) with other components. In addition, the applicant was requested to describe the inspection method, including the inspection frequency, for the components.

In its response dated July 22, 2011, the applicant stated that in MRP-227, the reactor internals were assigned to one of the following four functional groups: Primary, Expansion, Existing Programs, and No Additional Measures components. The applicant also stated that the link relationships are consistent with that provided in Tables 4-1 and 4-4 of MRP-227, Rev. 0. The applicant further stated that the inspection frequency and method for the primary and expansion components are provided in Tables 4-1 and 4-4 of MRP-227, Rev. 0.

In addition, the revised LRA Table 3.1.2-2 in response to RAI 3.1.2.2-2 does not include an AMR item to manage reduction in fracture toughness of the CASS CSA vent valve body and plenum cylinder reinforcing plate.

Issue The staff noted that MRP-227 Tables 4-1 and 4-4 referenced in the applicants response do not clearly address information regarding (1) the functional groups, (2) the link relationships, or (3) the inspection method, including the frequency, specified for the CSA vent valve body and plenum cylinder reinforcing plate. In addition, the revised LRA Table 3.1.2-2 does not address reduction in fracture toughness of these CASS components. The staff also found a need to clarify whether or not the applicants aging management for these components is based on applicants plant-specific existing inspections (for example, inspections per ASME Code Section XI requirements or Technical Specifications).

Request Provide the information regarding (1) the functional groups, (2) the link relationships (if existent) and (3) the inspection method including the frequency for the CSA vent valve body and plenum cylinder reinforcing plate made of CASS.

As part of the response, clarify whether or not the applicants aging management for reduction in fracture toughness of these CASS components is based on applicants plant-specific existing inspections (for example, inspections per ASME Code Section XI requirements or Technical Specifications).

In addition, describe the applicants operating experience in terms of the occurrence of cracking or reduction in fracture toughness of these components.

Page 1 of 1

Retrieved from "https://kanterella.com/w/index.php?title=ML12047A001&oldid=2105892"