ET 15-0010, Response to Second Request for Additional Information Regarding License Amendment Request to Revise Technical Specifications to Adopt TSTF-523, Revision 2, Generic Letter 2008-01, Managing Gas Accumulation
| ML15132A651 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 05/04/2015 |
| From: | Mccoy J Wolf Creek |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| ET 15-0010, GL-08-001, TAC MF5280, TSTF-523, Rev 2 | |
| Download: ML15132A651 (19) | |
Text
IW$LF CREEK NUCLEAR OPERATING CORPORATION Jaime H. McCoy Vice President Engineering May 4, 2015 ET 15-0010 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555
Reference:
1)
Letter ET 14-0034, dated November 20, 2014, from J. H. McCoy, WCNOC, to USNRC
- 2)
Letter dated February 10, 2015, from C. F. Lyon, USNRC, to A.C.
Heflin, WCNOC, "Wolf Creek Generating Station -
Request for Additional Information Re: License Amendment Request to Adopt TSTF-523, Revision 2, "Generic Letter 2008-01, Managing Gas Accumulation" (TAC NO. MF5280)"
- 3)
Letter ET 15-0008, dated March 18, 2015, from J. H. McCoy, WCNOC, to USNRC
- 4)
Letter dated March 27, 2015, from C. F. Lyon, USNRC, to A.C. Heflin, WCNOC, "Wolf Creek Generating Station - Request for Additional Information Re: License Amendment Request to Adopt TSTF-523, Revision 2, "Generic Letter 2008-01, Managing Gas Accumulation" (TAC NO. MF5280)"
Subject:
Docket No. 50-482:
Response to Second Request for Additional Information Regarding License Amendment Request to Revise Technical Specifications to Adopt TSTF-523, Revision 2, "Generic Letter 2008-01, Managing Gas Accumulation" Gentlemen:
Reference 1 provided the Wolf Creek Nuclear Operating Corporation (WCNOC) application to revise the Wolf Creek Generating Station (WCGS) Technical Specifications (TS). The proposed amendment would modify the WCGS TS requirements to address Nuclear Regulatory Commission (NRC) Generic Letter 2008-01, "Managing Gas Accumulation in Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems," as described in Technical Specification Task Force (TSTF) Traveler TSTF-523, Revision 2, "Generic Letter 2008-01, Managing Gas Accumulation." Reference 2 provided a request for additional information (RAI) related to the application. Reference 3 provided WCNOC's response to the RAI. Reference 4 provided a second RAI related to the application. The Attachment provides WCNOC's response to the second RAI.
P.O. Box 411 / Burlington, KS 66839 / Phone: (620) 364-8831 An Equal Opportunity Employer M/F/HCNET
ET 15-0010 Page 2 of 3 The additional information does not expand the scope of the application and does not impact the no significant hazards consideration determination presented in Reference 1.
In accordance with 10 CFR 50.91, "Notice for public comment; State consultation," a copy of this submittal is being provided to the designated Kansas State official.
This letter contains no commitments. If you have any questions concerning this matter, please contact me at (620) 364-4156, or Mr. Steven R. Koenig at (620) 364-4041.
Sincerely, Jaime H. McCoy JHM/rlt Attachment cc:
T. A. Conley (KDHE), w/a M. L. Dapas (NRC), w/a C. F. Lyon (NRC), w/a A. A. Rosebrook (NRC), w/a Senior Resident Inspector (NRC), w/a
ET 15-0010 Page 3 of 3 STATE OF KANSAS
)
COUNTY OF COFFEY SS
)
Jaime H. McCoy, of lawful age, being first duly sworn upon oath says that he is Vice President Engineering of Wolf Creek Nuclear Operating Corporation; that he has read the foregoing document and knows the contents thereof; that he has executed the same for and on behalf of said Corporation with full power and authority to do so; and that the facts therein stated are true and correct to the best of his knowledge, information and belief.
By 44444 Jaime
. McCoy Vice resident Engineering (22-96 SUBSCRIBED and sworn to before me this qyý- day of
,2015.
F4 GAYLE SHEPHEARD1 Notary Pubiic - Stat3 of K*nsas
ýM Ap t. Expires Notary PoIic Expiration Date _/,__/_______
Attachment I to ET 15-0010 Page 1 of 16 Response to Request for Additional Information Reference 1 provided the Wolf Creek Nuclear Operating Corporation (WCNOC) application to revise the Wolf Creek Generating Station (WCGS) Technical Specifications (TS). The proposed change revises or adds Surveillance Requirements to verify that the system locations susceptible to gas accumulation are sufficiently filled with water and to provide allowances which permit performance of the verification.
The changes are being made to address the concerns discussed in Generic Letter 2008-01, "Managing Gas Accumulation in Emergency Core Cooling, Decay Heat Removal, and Containment Spray Systems," (Reference 1).
Reference 2 provided a request for additional information (RAI) related to the application.
Reference 3 provided WCNOC's response to the RAI.
Reference 4 provided a second RAI related to the application. The specific NRC question is provided in italics.
- 1.
Please provide the surveillance frequency applied at the time each void was identified.
Response: Please see the response to Question 4 below.
- 2.
Please provide the initial surveillance date following attaining Mode I for each of the Cycles 17 through 20.
Response: Please see the response to Question 5 below.
- 3.
If a void is not identified, please clarify if this means the surveillance determined that there was no void.
Response: The plant procedures utilized for monitoring and venting the locations susceptible to gas accumulation require documenting if the location is "water solid" or "not water solid." As such, if a void is not identified, the surveillance determined that no void was detected (i.e.,
water solid).
- 4.
For each identified void, please explain what initiated conducting the surveillance.
Response: The tables provided in Reference 3 are revised to include two additional columns to address Question 1 and Question 4.
For each identified void, the surveillance frequency applied at the time the void was detected (Question 1) and what initiated conducting the surveillance (Question 4) are provided in the tables below.
Attachment I to ET 15-0010 Page 2 of 16 The historic void volumes found that are applicable to the performance of Surveillance Requirement (SR) 3.5.2.3 are as follows. Note that the Allowable Volume (Allowable Vol.) is the acceptance criteria at the time the void was discovered.
Cycle 20 Void Vol.
Allowable Surveillance Reason for Conducting Date Location (ftI )
, Vol. (ft3)
Notes Frequency Surveillance 3/22/2013 EMV0257 2
0.25 MODE 6 post fill and vent during N/A in MODE 6 Post fill and vent Refueling Outage 19. Emergency Core Cooling System (ECCS) not required to be OPERABLE in this mode. Void vented to water solid.
Cycle 19 Void Vol.
Allowable Surveillance Reason for Conducting Date Location (ft3)
Vol. (ft )
Notes Frequency Surveillance 12/18/2012 EMV0058 0.011 0.25 MODE 1. Void could not be vented.
31 days Post fill and vent -
Location was water solid at next restoration from online performance of ultrasonic testing (UT) 1 maintenance month later.
10/4/2012 EMV0259 0.005 0.25 MODE 1. Void vented to water solid.
31 days Normal monthly surveillance 8/15/2012 EJV0088 0.003 0.59 MODE 1. Void vented to water solid.
31 days Increased surveillance frequency because of continuous Residual Heat Removal (RHR) depressurization due to Reactor Coolant System (RCS) inleakage 8/8/2012 EJV0088 0.11 0.59 MODE 1. Gas sample taken. Approx.
31 days Increased surveillance 50% hydrogen and 50% nitrogen. Void frequency because of vented to water solid.
continuous RHR depressurization due to RCS inleakage
Attachment I to ET 15-0010 Page 3 of 16 Cycle 19 Void Vol.
Allowable Surveillance Reason for Conducting Date jLocation ft Vol. (ft Notes Frequency Surveillance 7/24/2012 EJV0088 1.12 (est.)
0.59 MODE 1. Volume estimated using 31 days Increased surveillance Henry's Law. Void evaluated using frequency because of GOTHIC. Peak pressure from water continuous RHR hammer less than relief valve setting, and depressurization due to unbalanced load from water hammer RCS inleakage 34% of pipe weight. RHR System would have been capable of performing its safety function if required. Void vented to water solid.
7/23/2012 EJV0088 0.01 0.59 MODE 1. Void vented to water solid.
31 days Increased surveillance frequency because of continuous RHR depressurization due to RCS inleakage 7/19/2012 EJV0088 0.41 0.59 MODE 1. Gas sample taken. Sample 31 days Increased surveillance was contaminated with air during testing, frequency because of but had high hydrogen content. Void continuous RHR vented to water solid.
depressurization due to RCS inleakage 3/26/2012 EJV0088
>0.59 0.59 MODE 3. Formed from accumulator 31 days Checked because of leakage into RHR. Present for no greater accumulator level loss than 5.87 hours0.00101 days <br />0.0242 hours <br />1.438492e-4 weeks <br />3.31035e-5 months <br />. Void vented to water into RHR System solid.
Cycle 18 Void Vol.
Allowable Surveillance Reason for Conducting Date Location (ft)
Vol. (ft3)
Notes Frequency Surveillance 11/22/2010 BGV0496 0.01 0.25 MODE 1. Void vented to water solid.
31 days Normal monthly surveillance 11/10/2010 EJV0223
<0.001 0
MODE 1. Void vented to water solid.
31 days Normal monthly surveillance
Attachment I to ET 15-0010 Page 4 of 16 Cycle 18 Void Vol.
Allowable Surveillance Reason for Conducting Date Location
)
Vol. (ft3)
Notes Frequency Surveillance 10/22/2010 EJV0088 0.29 0.59 MODE 1. UT performed due to leakage 31 days Checked because of from accumulator. Void vented to water accululator level loss solid.
into RHR System 8/24/2010 EJV0221 Unknown 0
MODE 1. Post vacuum fill and vent of 31 days Post vacuum fill and (vented RHR A Heat Exchanger. RHR train A vent of RHR A Heat 1/4 turn was out of service for vacuum fill and Exchanger open for 9 vent. Void vented to water solid.
sec) 8/23/2010 EEJ01A 4.1 No MODE 1. Volume of void in RHR A Heat 31 days Post vacuum fill and allowable Exchanger after vacuum fill and vent vent of RHR A Heat volume performed. Bounded by void found on Exchanger calculated 7/2/10. Was completely removed from RHR A Heat Exchanger during dynamic vent on 10/6/10 during a forced outage.
8/23/2010 EJV0221
-0.001 0
MODE 1. Post vacuum fill and vent of 31 days Post vacuum fill and RHR A Heat Exchanger. Void vented to vent of RHR A Heat water solid.
Exchanger 8/23/2010 EJV0238 0.01 0.25 MODE 1. Post vacuum fill and vent of 31 days Post vacuum fill and RHR A Heat Exchanger. Void vented to vent of RHR A Heat volume of <0.001 cubic feet. Location Exchanger was water solid at next performance of IUT 1 day later.
7/4/2010 EJV0059 0.09 0.1 MODE 1. Void is gas from the RHR A 31 days Troubleshooting of large Heat Exchanger which has been void in RHR A Heat transported back to the pump suction Exchanger through the miniflow line and collected at the recirculation sump isolation valve.
Void vented to water solid.
Attachment I to ET 15-0010 Page 5 of 16 Cycle 18 Void Vol.
Allowable Surveillance Reason for Conducting Date Location (ft[ )
Vol. (ft3)
Notes Frequency Surveillance 7/4/2010 EJV0221 0.03 0
MODE 1. Void is gas from the RHR A 31 days Troubleshooting of large Heat Exchanger which has been void in RHR A Heat transported back to the pump suction Exchanger through the miniflow line and collected at the check valve. Void vented to water solid.
7/3/2010 EJV0059 1.35 0.1 MODE 1. Gas sample taken. Void was 31 days Troubleshooting of large determined to be 91.7% nitrogen, 7.3%
void in RHR A Heat oxygen, and 0.9% hydrogen. Void is gas Exchanger from the RHR A Heat Exchanger which has been transported back to the pump suction through the miniflow line and collected at the recirculation sump isolation valve. Void vented but small volume remained.
7/2/2010 EEJ01A 9.8 No MODE 1. Maximum calculated initial 31 days Abnormal behavior of allowable volume in the tube side of RHR A Heat RHR Train A during volume Exchanger of 9.8 ft3 present since pump run.
calculated Refueling Outage 17. Detailed evaluation Troubleshooting showed that there was reasonable identified large void in assurance that RHR System, SIPs, and RHR A Heat Exchanger.
CCPs would have been able to perform Subsequent pump runs safety functions. Void could not be transported portions of completely flushed from RHR Heat void throughout RHR Exchanger since 3500 gpm flow required Train A to be vented.
for dynamic venting. A volume of 6.2 cubic feet of gas remained in the RHR A Heat Exchanger after 7/4/10.
Attachment I to ET 15-0010 Page 6 of 16 Cycle 18 Void Vol.
Allowable Surveillance Reason for Conducting Date Location (ft3)
Vol. (ft3)
Notes Frequencyj Surveillance 7/2/2010 EJV0059 0.64 0.1 MODE 1. Gas sample taken. Void was 31 days Troubleshooting of large determined to be 94% nitrogen. Void is void in RHR A Heat gas from the RHR A Heat Exchanger Exchanger which has been transported back to the pump suction through the miniflow line and collected at the recirculation sump isolation valve. Void vented but small volume remained.
7/2/2010 EJV0059 0.02 0.1 MODE 1. Void is gas from the RHR A 31 days Troubleshooting of large Heat Exchanger which has been void in RHR A Heat transported back to the pump suction Exchanger through the miniflow line and collected at the recirculation sump isolation valve.
Void vented but small volume remained.
7/2/2010 EJV0134 0.01 0.25 MODE 1. Void is likely a result of running 31 days Troubleshooting of large the RHR A pump with a large void in the void in RHR A Heat RHR A Heat Exchanger. Void was Exchanger located in containment, and was not vented due to high local temperatures.
When location was checked again on 7/4/2010, void had dissolved.
4/29/2010 EJV0088 0.006 0.25 MODE 1. Void vented to water solid.
31 days Follow-up to Void detected on 4/14/2010 4/22/2010 EJV0088 0.008 0.25 MODE 1. Void vented to water solid.
31 days Follow-up to Void detected on 4/14/2010
Attachment I to ET 15-0010 Page 7 of 16 Cycle 18 Void Vol.
Allowable Surveillance Reason for Conducting Date Location (ft)
Vol. (ft3)
Notes Frequency Surveillance 4/14/2010 EJV0088 0.59 0.25 MODE 1. Gas sample taken. Void was 31 days Normal monthly determined to be >98% nitrogen. Void surveillance evaluated using GOTHIC. Peak pressure from water hammer less than relief valve setting, and pressure rise due to pressure pulsations from water hammer was determined to be insignificant. RHR system would have been capable of performing its safety function if required.
Void vented to water solid.
11/8/2009 EJV0221
-0.001 0
MODE 6 post fill and vent. ECCS not N/A in MODE 6 Post fill and vent required to be OPERABLE in this mode.
Void vented to water solid.
11/8/2009 EJV0241 Unknown 0.25 MODE 6 post fill and vent. ECCS not N/A in MODE 6 Post fill and vent (20 - 30 required to be OPERABLE in this mode.
sec. vent)
Void vented to water solid.
Cycle 17 Void Vol.
Allowable Surveillance Reason for Conducting Date Location (ftL)
Vol. (ft3)
Notes Frequency Surveillance 8/5/2008 EMV0257 Small 0.25 MODE 1. Gas sample taken and 31 days Normal monthly
(<<0.25) determined to be 0.2% hydrogen, 25.6%
surveillance oxygen, and 75.2% nitrogen. Source was leftover air from fill and vent during Refueling Outage 16. Void vented to water solid.
6/4/2008 EJV0203 Small 0.25 MODE 1. Gas sample taken and 31 days Increased surveillance
(<<0.25) determined to be 2% helium, 66.1%
frequency after exit from hydrogen, 5.75% oxygen, and 26.2%
Refueling Outage 16 nitrogen. Source was degassing after securing from shutdown cooling in Refueling Outage 16. Void vented to water solid.
Attachment I to ET 15-0010 Page 8 of 16 Cycle 17 Void Vol.
Allowable Surveillance Reason for Conducting Date Location (ft3)
Vol. (ft3 )
Notes Frequency Surveillance 5/27/2008 EJV0128 Small 0.25 MODE 1. Source was degassing after 31 days Increased surveillance
(<<0.25) securing from shutdown cooling in frequency after exit from Refueling Outage 16. Void vented to Refueling Outage 16 water solid.
5/23/2008 EJV0128 Small 0.25 MODE 1. Gas sample taken and 31 days Increased surveillance
(<<0.25) determined to be 19.1% hydrogen, 15.3%
frequency after exit from oxygen, and 65.6% nitrogen. Source was Refueling Outage 16 degassing after securing from shutdown cooling in Refueling Outage 16. Void vented to water solid.
5/22/2008 EJV0223 0.13 0
MODE 1. RHR B pump out of service for 31 days Increased surveillance scheduled maintenance. Gas sample frequency after exit from taken and determined to be 45.6%
Refueling Outage 16 hydrogen, 8% oxygen, and 46.3%
nitrogen. Source was degassing after securing from shutdown cooling in Refueling Outage 16. Void vented to water solid.
5/11/2008 EJV0128 Small 0.25 MODE 4 during Refueling Outage 16.
31 days Increased surveillance
(<<0.25)
Void vented to water solid.
frequency after exit from Refueling Outage 16 5/6/2008 EMV0002
<0.001 0.25 MODE 5 post fill and vent during N/A in MODE 5 Post fill and vent Refueling Outage 16. ECCS not required to be OPERABLE in this mode. Void was not vented.
5/5/2008 EJV0122 Unknown 0.25 MODE 5 post fill and vent during N/A in MODE 5 Post fill and vent Refueling Outage 16. ECCS not required to be OPERABLE in this mode. Void vented to water solid.
5/5/2008 EJV0128
<0.1 0.25 MODE 5 post fill and vent during N/A in MODE 5 Post fill and vent Refueling Outage 16. ECCS not required to be OPERABLE in this mode. Void vented to water solid.
Attachment I to ET 15-0010 Page 9 of 16 Cycle 17 1
Void Vol.
Allowable Surveillance
] Reason for Conducting Date Location (ft3)
, Vol. (ft'l Notes Frequency Surveillance 5/5/2008 EJV0198 Unknown 0
MODE 5 post fill and vent during N/A in MODE 5 Post fill and vent (1 minute Refueling Outage 16. ECCS not required vent) to be OPERABLE in this mode. Void vented to water solid.
5/5/2008 EJV0223 Unknown 0
MODE 5 post fill and vent during N/A in MODE 5 Post fill and vent (1 minute Refueling Outage 16. ECCS not required vent) to be OPERABLE in this mode. Void vented to water solid.
5/5/2008 EMV0078 Small 0.25 MODE 5 post fill and vent during N/A in MODE 5 Post fill and vent
(<<0.25)
Refueling Outage 16. ECCS not required to be OPERABLE in this mode. Void vented to water solid.
5/5/2008 EMV0156 Small 0.25 MODE 5 post fill and vent during N/A in MODE 5 Post fill and vent
(<<0.25)
Refueling Outage 16. ECCS not required to be OPERABLE in this mode. Void vented but small volume remained.
5/5/2008 EMV0185 0.021 0.25 MODE 5 post fill and vent during N/A in MODE 5 Post fill and vent Refueling Outage 16. ECCS not required to be OPERABLE in this mode. Void vented to water solid.
5/5/2008 EMV0242 Small 0.25 MODE 5 post fill and vent during N/A in MODE 5 Post fill and vent
(<<0.25)
Refueling Outage 16. ECCS not required to be OPERABLE in this mode. Void vented to water solid.
Attachment I to ET 15-0010 Page 10 of 16 The historic void volumes found that are applicable to the performance of proposed SR 3.6.6.9 are as (Allowable Vol.) is the acceptance criteria at the time the void was discovered.
follows. Note that the Allowable Volume Cycle 20 Void Vol.
Allowable Surveillance Reason for Conducting Date Location (ft)
Vol. W ) j Notes Frequency Surveillance 3/26/2013 ENV01 17 0.005 2.75 MODE 6 post fill and vent during N/A in MODE 6 Post fill and vent Refueling Outage 19. CS System not required to be OPERBLE in this mode.
Void vented to water solid.
Cycle 19 Void Vol.
Allowable Surveillance Reason for Conducting Date Location (ft)
Vol. (W)
Notes Frequency Surveillance 1/16/2013 ENVO120 0.69 2.47 MODE 1. Gas sample taken and 92 days Post B pump run on determined to be 0.1% hydrogen, 18.9%
1/15/2013. Additional oxygen, and 81.1% nitrogen. Void surveillance performed vented to water solid.
after pump run because of void detected on 12/3/2012.
12/3/2012 ENVO120 2.75 2.47 MODE 1. Gas sample taken and 92 days Normal quarterly determined to be 20.3% oxygen, and surveillance 84.1% nitrogen. Void was evaluated using GOTHIC. GOTHIC predicted that average void fraction at pump would be 2.25% for 20 seconds, giving a factor of 2.2 below the allowable void fraction from NEI 09-10, Rev. la. Conditions on use from draft Final Safety Evaluation were satisfied. CS System would have been able to perform its safety function if I required. Void vented to water solid.
Attachment I to ET 15-0010 Page 11 of 16 Cycle 18 Void Vol.
Allowable Surveillance Reason for Conducting Date Location (ft)
Vol. (ft)
Notes Frequency Surveillance 8/2/2010 ENVO093
<0.001 0.25 MODE 1. Void could not be vented.
92 days Follow-up from voids Location water solid on 9/7/2010.
detected on 7/6/2010 7/6/2010 ENVO093 0.004 0.25 MODE 1. Gas sample taken and 92 days Normal quarterly determined to be 22% oxygen and 78%
surveillance nitrogen. Void vented but small volume remained. Location water solid on 7/10/2010.
7/6/2010 ENVO117 0.9 0.15 MODE 1. Gas sample taken and 92 days Normal quarterly determined to be 19% oxygen and 81%
surveillance nitrogen. RELAP model with bounding void size of 4.8 cubic feet used to show that void fraction at pump would be less than 5%; however, this would not satisfy the conditions on use from the Final Safety Evaluation if used today. Void vented to 0.073 cubic feet. Location water solid on 7/7/2010.
C 1
Void Vol.
Allowable Surveillance 1Reason for Conducting Date Location (ft)
Vol. Wt)
Notes jFrequency Surveillance 7/11/2008 ENV0117
-0.001 0.15 MODE 1. Gas sample taken and 31 days Normal monthly determined to be 20.2% oxygen and surveillance 79.8% nitrogen. Void vented but small volume remained. Location water solid on 7/17/2008.
Attachment I to ET 15-0010 Page 12 of 16
- 5.
Please provide the MODE I entry and exits (entry into MODE 2) associated with each Cycle for Cycles 17 through 20.
Response: Reference 1 provided data tables for the total number of Emergency Core Cooling System (ECCS) locations monitored and the Containment Spray System locations monitored. These tables have been revised to include the MODE 1 entry and exit dates and times. The information request in Question 2 to provide the initial surveillance date following attaining MODE 1 for each cycle is provided in the below tables.
ECCS Locations Monitored Starting Date Total Number of MODE 1 MODE 1 exit Surveillance Date (A -
Cycle' for Trending Locations Monitored Entry (Entry into MODE 2)
Train A; B - Train B) 20 2,250 5/13/2014 0849 A
5/28/2014 (through 8/5/2014)
(startup from MC20)
B 6/11/2014 10/27/2013 2007 3/8/2014 1213 A
11/26/2013 (for MC 20)
B 11/4/2013 9/29/2013 1632 10/18/2013 1722 A
11/26/2013 (SGK05A failure)
B 11/4/2013 5/13/2013 0832 9/11/2013 2255 A
5/29/2013 (SGK05A failure B
6/11/2013 4/14/2013 0336 5/6/2013 2341 A
4/30/2013 3/18/2013 (SGK05A failure)
B 5/6/2013 19 2,618 3/27/2012 0040 2/4/2013 0026 A
4/4/2012 (RFO 19)
B 4/10/2012 6/29/2011 1139 1/13/2012 1403 A
7/5/2011 (Rx Trip/LOOP)
B 7/12/2011 6/23/2011 0316 6/26/2011 1609 A
7/5/2011 4/16/2011 (Manual Rx Trip)
B 7/12/2011
Attachment I to ET 15-0010 Page 13 of 16 Starting Date Total Number of MODE 1 MODE I exit Surveillance Date (A -
Cycle' for Trending Locations Entry (Entry into MODE 2)
Train A; B - Train B)
Monitored 18 2,195 12/8/2010 1848 3/19/11 A
12/28/2010 (RFO 18)
B 1/5/2011 10/18/2010 1804 12/6/2010 0943 A
11/3/2010
('A' DG not restored)
B 11/10/2010 3/9/2010 1558 10/5/2010 0921 A
4/7/2010 (leak on 'A' ESW)
B 3/17/2010 3/7/2010 1811 3/8/2010 0333 A
4/7/2010 (Manual Rx Trip/'A' B
3/17/2010 MFP) 11/14/2009 11/21/2009 0322 3/2/2010 1458 A
12/1/2009 (Rx Trip/SG water lvl)
B 12/15/2009 17 1,501 8/23/2009 1556 10/10/2009 A
8/31/2009 (RFO17)
B 9/16/2009 5/1/2009 0603 8/19/2009 1549 A
5/6/2009 (Rx Trip/LOOP)
B 5/13/2009 5/5/2008 5/14/2008 0553 4/28/2009 1527 A
6/6/2008 (Rx Trip/SG water Ivi)
B 6/6/2008 1 For the purposes of this license amendment request, the cycle is typically from the transition out of a defueled condition until transition into a defueled condition at the next refueling outage.
Attachment I to ET 15-0010 Page 14 of 16 Containment Spray System Locations Monitored Starting Date Total Number of MODE I MODE I exit Surveillance Date (A -
Cycle' for Trending Locations Monitored Entry (Entry into MODE 2)
Train A; B-Train B) 20 78 5/13/2014 0849 A
7/29/2014 (through 8/5/2014)
(startup from MC20)
B 7/8/2014 10/27/2013 2007 3/8/2014 1213 A
10/28/2013 (for MC 20)
B 10/31/2013 9/29/2013 1632 10/18/2013 1722 A
10/28/2013 (SGK05A failure)
B 10/31/2013 5/13/2013 0832 9/11/2013 2255 A
7/30/2013 (SGK05A failure B
7/9/2013 3/11/2013 4/14/2013 0336 5/6/2013 2341 A
4/22/2013 (SGK05A failure)
B 4/18/2013 19 166 3/27/2012 0040 2/4/2013 0026 A
4/23/2012 (RFO 19)
B 4/19/2012 6/29/2011 1139 1/13/2012 1403 A
7/5/2011 (Rx Trip/LOOP)
B 7/13/2011 6/23/2011 0316 6/26/2011 1609 A
7/5/2011 4/21/2011 (Manual Rx Trip)
B 7/13/2011
Attachment I to ET 15-0010 Page 15 of 16 Starting Date Total Number of MODE I MODE I exit Surveillance Date (A -
Cycle' for Trending Locations Monitored Entry (Entry into MODE 2)
Train A; B - Train B) 18 136 12/8/2010 1848 3/19/11 A
1/5/2011 (RFO 18)
B 1/10/2011 10/18/2010 1804 12/6/2010 0943 A
1/5/2011
('A' DG not restored)
B 1/10/2011 3/9/2010 1558 10/5/2010 0921 A
4/7/2010 (leak on 'A' ESW)
B 4/13/2010 3/7/2010 1811 3/8/2010 0333 A
4/7/2010 (Manual Rx Trip/'A' B
4/13/2010 MFP) 10/28/2009 11/21/2009 0322 3/2/2010 1458 A
12/1/2009 (Rx Trip/SG water Ivl)
B 12/15/2009 17 179 8/23/2009 1556 10/10/2009 A
8/31/2009 (RFO17)
B 9/16/2009 5/1/2009 0603 8/19/2009 1549 A
5/5/2009 (Rx Trip/LOOP)
B 5/15/2009 6/5/2008 5/14/2008 0553 4/28/2009 1527 A
6/5/2008 (Rx Trip/SG water Ivl)
B 6/17/2008 1 For the purposes of this license amendment request, the cycle is typically from the transition out of a defueled condition until transition into a defueled condition at the next refueling outage.
Attachment I to ET 15-0010 Page 16 of 16
References:
- 1.
WCNOC letter ET 14-0034, "Application to Revise Technical Specifications to Adopt TSTF-523, Revision 2, "Generic Letter 2008-01, Managing Gas Accumulation," Using the Consolidated Line Item Improvement Process," November 20, 2014. ADAMS Accession No. ML14330A247.
- 2.
Letter from C. F. Lyon, USNRC, to A. C. Heflin, WCNOC, "Wolf Creek Generating Station
- Request for Additional Information Re: License Amendment Request to Adopt TSTF-523, Revision 2, "Generic Letter 2008-01, Managing Gas Accumulation" (TAC NO.
MF5280)," February 10, 2015. ADAMS Accession No. ML15040A625.
- 3.
WCNOC letter ET 15-0008, "Response to Request for Additional Information Regarding License Amendment Request to Revise Technical Specifications to Adopt TSTF-523, Revision 2, "Generic Letter 2008-01, Managing Gas Accumulation," March 18, 2015.
ADAMS Accession No. ML15084A104.
- 4.
Letter from C. F. Lyon, USNRC, to A.C. Heflin, WCNOC, "Wolf Creek Generating Station -
Request for Additional Information Re: License Amendment Request to Adopt TSTF-523, Revision 2, "Generic Letter 2008-01, Managing Gas Accumulation" (TAC NO. MF5280),"
March 27, 2015. ADAMS Accession No. ML15082A005.