ML16328A283

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Supplemental Presentation Slides for 10/25/2016 Public Meeting Via E-mail from K.Greene to R.Guzman Calvert Cliffs GSI-191 Resolution Update
ML16328A283
Person / Time
Site: Calvert Cliffs  Constellation icon.png
Issue date: 11/18/2016
From: Greene K
Exelon Generation Co
To: Richard Guzman
Plant Licensing Branch 1
Guzman R
References
MF8521, MF8522
Download: ML16328A283 (18)
v • d • e


Text

From: Greene, Ken:(GenCo-Nuc)

To: Guzman, Richard

Subject:

[External_Sender] FW: T/H Analysis Presentation Date: Friday, November 18, 2016 10:17:37 AM Attachments: RI GSI-191 TH Analysis Results.pdf

Rich, Good morning. Attached is a presentation covering information Steve Smith, NRC, had requested to see.

Have a good Thanksgiving.

From: Sellers, Craig:(Contractor - GenCo-Nuc)

Sent: Friday, November 18, 2016 9:29 AM To: Greene, Ken:(GenCo-Nuc)

Cc: Drake, Andre S:(GenCo-Nuc); Salehi, Matthew:(GenCo-Nuc); Haydin, John S:(GenCo-Nuc); Lauver, Doug:(GenCo-Nuc)

Subject:

T/H Analysis Presentation

Ken, Please submit the attached presentation to the Calvert Cliffs NRC Project Manager. Inform him that Steve Smith (NRC Staff) wanted to see this data.
Thanks, Craig Craig D. Sellers Project Manager GSI-191 Resolution/GL 2004-02 Closure Calvert Cliffs Nuclear Power Plant (o) 410.495.4272 - Calvert Cliffs (c) 410.610.1164 This Email message and any attachment may contain information that is proprietary, legally privileged, confidential and/or subject to copyright belonging to Exelon Corporation or its affiliates ("Exelon"). This Email is intended solely for the use of the person(s) to which it is addressed. If you are not an intended recipient, or the employee or agent responsible for delivery of this Email to the intended recipient(s), you are hereby notified that any dissemination, distribution or copying of this Email is strictly prohibited. If you have received this message in error, please immediately notify the sender and permanently delete this Email and any copies. Exelon policies expressly prohibit employees from making defamatory or offensive statements and infringing any copyright or any other legal right by Email communication. Exelon will not accept any liability in respect of such communications. -

EXCIP

Calvert Cliffs GSI-191 Program Thermal Hydraulic Analysis of Containment Response Calculation CA10199 November 18, 2016

Thermal Hydraulic Analysis of Containment

  • Investigate Sump Temperature and Containment Pressure

- Large Break LOCA Events

- LOCA Scenarios Presented

  • DEGB Cold Leg,

- 2 Trains of ESF (Maximum SI) - CCX

- Single Train of ESF (Minimum SI) - CCI

  • DEGB Hot Leg,

- 2 Trains of ESF (Maximum SI) - HHX

- Single Train of ESF (Minimum SI) - HHI

- 2 ft2 Break, Single Train of ESF - H2I 1 Calvert Cliffs GSI-191 Containment Response T/H Analyses

Thermal Hydraulic Analysis of Containment (Cont.)

  • Containment Response Scenarios Evaluated

- Scenario A: 2 Containment Air Coolers (CACs) Operating

  • Determine if containment pressure is reduced to 2.8 psig prior to sump fluid temperature reducing to 140°F.

- Scenario B: 4 CACs Operating

  • Determine how quickly the containment pressure could drop to sub-atmospheric conditions in the strainer.

- Scenario C: 4 CACs Operating

  • Determine, for the case where no single failures have occurred (4 CACs and 2 Containment Spray Pumps operating), if the containment response profile remains below the EQ profile.
  • When the first CS Pump is secured (at 2.8 psig), the other CS Pump is lost for 30 minutes and two (2) CACs are lost indefinitely.

- Scenario D: Repeat Scenario C with the following change:

  • When the first CS Pump is secured (at 2.8 psig), the other CS Pump is lost for 30 minutes.

- Scenario E: Repeat Scenario C with the following change:

  • When the first CS Pump is secured (at 2.8 psig) and one HPSI pump is also secured, the other CS Pump and the other HPSI pump are lost for 30 minutes. Two CACs are also assumed to be lost indefinitely.

2 Calvert Cliffs GSI-191 Containment Response T/H Analyses

Typical Containment Pressure Profile 50 45 Pressure Increase due to increase in M&E release 40 from RCS reflood spillage 35 Pressure Reduction Pressure Reduction Containment Pressure (psig) 30 due to reduction in due to heat removal M&E release and heat by CS and CACs 25 removal by heat sinks 20 15 RAS 10 CS Pump Trip 5

0 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Time (s) 3 Calvert Cliffs GSI-191 Containment Response T/H Analyses

Typical Containment Air Temperature Profile 300 280 260 Temp Reduction due 240 to heat removal by Temp Reduction due CS and CACs to reduction in M&E Temperature (F) 220 release and heat RAS 200 removal by heat sinks 180 160 140 CS Pump Trip 120 100 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Time (s) 4 Calvert Cliffs GSI-191 Containment Response T/H Analyses

Typical Sump Temperature Profile - Hot Leg Break 300 280 260 240 Temperature (F) 220 RAS 200 180 CS Pump Trip 160 140 120 100 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Time (s) 5 Calvert Cliffs GSI-191 Containment Response T/H Analyses

Typical Sump Temperature Profile - Cold Leg Break 300 280 260 240 Temperature (F) 220 RAS 200 180 CS Pump Trip 160 140 Temp Reduction due to SI spillage from break 120 100 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Time (s) 6 Calvert Cliffs GSI-191 Containment Response T/H Analyses

Scenario A - Containment Pressure 50 45 CCX CCI 40 HHX 35 HHI H2I Containment Pressure (psig) 30 25 20 15 10 5

0 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Time (s) 7 Calvert Cliffs GSI-191 Containment Response T/H Analyses

Scenario A - Containment Air Temperature 300 280 CCX 260 CCI HHX 240 HHI Temperature (F) 220 H2I 200 180 160 140 120 100 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Time (s) 8 Calvert Cliffs GSI-191 Containment Response T/H Analyses

Scenario A - Sump Temperature 300 280 CCX CCI 260 HHX 240 HHI H2I Temperature (F) 220 200 180 160 140 120 100 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Time (s) 9 Calvert Cliffs GSI-191 Containment Response T/H Analyses

Scenario B - Containment Pressure 50 45 CCX 40 CCI HHX 35 HHI Pressure (psig) 30 H2I 25 20 15 10 5

0 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Time (s) 10 Calvert Cliffs GSI-191 Containment Response T/H Analyses

Scenario B - Containment Air Temperature 300 280 CCX CCI 260 HHX 240 HHI Temperature (F) 220 H2I 200 180 160 140 120 100 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Time (s) 11 Calvert Cliffs GSI-191 Containment Response T/H Analyses

Scenario B - Sump Temperature 300 280 CCX CCI 260 HHX 240 HHI Temperature (F) 220 H2I 200 180 160 140 120 100 1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 1.E+05 1.E+06 1.E+07 Time (s) 12 Calvert Cliffs GSI-191 Containment Response T/H Analyses

Thermal Hydraulic Analysis Results

- Hot Leg Break - Hot Leg Break

  • Time to 140°F = 108.3 hours3.472222e-5 days <br />8.333333e-4 hours <br />4.960317e-6 weeks <br />1.1415e-6 months <br />
  • Time to 140°F = 86.1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />
  • Time to 2.8 psig = 47.2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br />
  • Time to 2.8 psig = 23.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />
  • Time to secure pump = 61.1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />
  • Time to secure pump = 62.5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />
  • Pressure @ 140°F = 1.98 psig
  • Pressure @ 140°F = 1.95 psig

- Cold Leg Break - Cold Leg Break

  • Time to 140°F = 77.8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />
  • Time to 140°F = 50.0 hours0 days <br />0 hours <br />0 weeks <br />0 months <br />
  • Time to 2.8 psig = 63.9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br />
  • Time to 2.8 psig = 38.9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br />
  • Time to secure pump = 13.9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br />
  • Time to secure pump = 11.1 hours1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br />
  • Pressure @ 140°F = 2.58 psig
  • Pressure @ 140°F = 2.63 psig 13 Calvert Cliffs GSI-191 Containment Response T/H Analyses

Scenario C - Containment Pressure & Temperature 60 300 280 CCX CCX 50 260 HHX HHX 240 ES-014 ES-014 40 (EQ)

(EQ)

Pressure (psig) Temperature (F) 220 30 200 180 20 160 140 10 120 0 100 1.E-01 1.E+01 1.E+03 1.E+05 1.E+07 1.E-01 1.E+01 1.E+03 1.E+05 1.E+07 Time (s) Time (s) 14 Calvert Cliffs GSI-191 Containment Response T/H Analyses

Scenario D - Containment Pressure & Temperature 50 300 45 CCX 280 CCX HHX HHX 40 260 ES-014 ES-014 35 240 Pressure (psig) Temperature (F) 30 220 25 200 20 180 15 160 10 140 5 120 0 100 1.E-01 1.E+01 1.E+03 1.E+05 1.E+07 1.E-01 1.E+01 1.E+03 1.E+05 1.E+07 Time (s) Time (s) 15 Calvert Cliffs GSI-191 Containment Response T/H Analyses

Scenario E - Containment Pressure & Temperature 50 300 45 CCX 280 CCX HHX HHX 40 260 ES-014 (EQ) ES-014 (EQ) 35 240 Pressure (psig) Temperature (F) 30 220 25 200 20 180 15 160 10 140 5 120 0 100 1.E-01 1.E+01 1.E+03 1.E+05 1.E+07 1.E-01 1.E+01 1.E+03 1.E+05 1.E+07 Time (s) Time (s) 16 Calvert Cliffs GSI-191 Containment Response T/H Analyses

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