PLA-6828, Eleam Electric Station, Response to E-mail (Dated March 16, 2012) Request for Additional Information on Proposed Amendment Number 281 to Unit 2 Operating License No. NPF-22: Difference between revisions

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| issue date = 03/23/2012
| issue date = 03/23/2012
| title = Eleam Electric Station, Response to E-mail (Dated March 16, 2012) Request for Additional Information on Proposed Amendment Number 281 to Unit 2 Operating License No. NPF-22
| title = Eleam Electric Station, Response to E-mail (Dated March 16, 2012) Request for Additional Information on Proposed Amendment Number 281 to Unit 2 Operating License No. NPF-22
| author name = Helsel J M
| author name = Helsel J
| author affiliation = PPL Susquehanna, LLC
| author affiliation = PPL Susquehanna, LLC
| addressee name =  
| addressee name =  

Revision as of 02:37, 29 June 2019

Eleam Electric Station, Response to E-mail (Dated March 16, 2012) Request for Additional Information on Proposed Amendment Number 281 to Unit 2 Operating License No. NPF-22
ML12086A016
Person / Time
Site: Susquehanna Talen Energy icon.png
Issue date: 03/23/2012
From: Helsel J
Susquehanna
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
PLA-6828
Download: ML12086A016 (26)
v • d • e


Text

KAR 23 2012 Jeffrey M. Helsel Nuclear Plant Manager U. S. Nuclear Regulatory Commission Attn: Document Control Desk Mail Stop OP1-17 Washington, DC 20555 PPL Susquehanna, LLC 769 Salem Boulevard Berwick, P A 18603 Tel. 570.542.3510 Fax 570.542.1504 jmhelsel@pplweb.com SUSQUEHANNA STEAM ELECTRIC STATION RESPONSE TO EMAIL (DATED MARCH 16, 2012) REQUEST FOR ADDITIONAL INFORMATION ON PROPOSED AMENDMENT NUMBER 281 TO UNIT 2 OPERATING LICENSE NO. NPF-22 PLA-6828 Docket No. 50-388

References:

1) Letter (PLA-6817) from R. A. Kearney (PPL) to USNRC (Document Control Desk) Titled HProposedAmendment Number 281 to Unit 2 Operating License No. NPF-22 Temporary Change to Allow Implementation of Multiple Spurious Operations Modifications on SSES Unit 1 4160 v Buses: Technical Specifications 3.8. 7 and 3. 7.1," dated March 8, 2012 2) Email from B. Vaidya (USNRC) to P P L, Titled HSusquehanna Unit 2, ME8152, Draft Request for Additional Information (RAJ) from Balance of Plant Branch, " dated March 16, 2012. The purpose of this letter is to respond to a Request for Additional Information (RAI) (Reference
2) from the NRC on March 16,2012. The responses to the NRC questions are contained in Attachment
1. Attachment 2 contains the revised Technical Specification pages. There are no regulatory commitments associated with the proposed changes. PPL Susquehanna, LLC is providing the Commonwealth of Pennsylvania with a copy of this response to the RAI. If you have any questions or require additional information, please contact Mr. Cornelius T. Coddington at ( 610) 77 4-4019. J. M. Helsel Attachments:

Document Control Desk PLA-6828 Attachment 1 Response to Request for Additional Information, dated March 16, 2012 Attachment 2 Revised Proposed Changes to Unit 2 Technical Specification 3.8.7, "Electrical Power Systems-Distribution Systems-Operating" and Unit 2 Technical Specification 3.7.1, "Plant Systems-RHRSW System and UHS" (Mark -ups) Copy: NRC Region I Mr. J. W. Andersen, NRR/EEEB/BC Mr. R. B. Elliot, NRR/STSB/BV Mr. P. W. Finney, NRC Sr. Resident Inspector Mr. D. M. Frumkin, NRR/AFPB Mr. D. G. Harrison, NRR/APLA/BC Mr. R. R. Janati, DEP/BRP Mr. A. R. Klein, NRR/AFPB/BC Mr. G. S. Matharu, NRR/EEEB Mr. K. V. Scales, NRR/EEEB Mr. B. K. Vaidya, NRC Project Manager Mr. G. M. Waig, NRR/STSB (Tech Specification Branch) Mr. G. A. Wilson, NRR/DORL/LPL1-1/BC Attachment 1 to PLA-6828 PPL Susquehanna, LLC Response to Request for Additional Information, dated March 16, 2012 NRC Question #1:

Background:

Attachment 1 to PLA-6828 Page 1 of 19 Required Action A.2 of Technical Specification (TS) 3.4.8, "Residual Heat Removal (RHR) Shutdown Cooling System-Hot Shutdown," requires the licensee to verify that an alternate method of decay heat removal is available for each inoperable RHR shutdown cooling subsystem.

Issue: During the extended Completion Time, an RHRSW train for Unit 2 is inoperable.

Unit 2 may experience an inadvertent shutdown or be required to shutdown during the extended Completion Time Request: If Unit 2 is shut down during the extended Completion Time, describe how the licensee will complete and satisfy the Required Action A.2 ofTS 3.4.8. PPL Response to NRC Question 1: Removing a Unit 1 -4.16 kV Bus from service for maintenance during a Unit 1 Refueling Outage occurs during most outages. Normally, two (2) 4.16 kV Buses are taken out for maintenance each outage. During each of these plant evolutions, the potential implications for impacting Unit 2 under Technical Specification 3.4.8, Residual Heat Removal (RHR) Shutdown Cooling System-Hot Shutdown, must be addressed.

Technical Specification 3 .4.8 requires Two RHR shutdown cooling subsystems shall be OPERABLE, and, with no recirculation pump in operation, at least one RHR shutdown cooling subsystem shall be in operation.

This Technical Specification is applicable in Mode 3 with reactor steam dome pressure less than the RHR cut in permissive pressure.

Technical Specification Bases B 3 .4.8 defines an OPERABLE RHR shutdown cooling subsystem as follows:

Attachment 1 to PLA-6828 Page 2 of 19 ... An OPERABLE RHR shutdown cooling subsystem consists of one OPERABLE RHR pump, one heat exchanger, and the associated piping and valves. The two subsystems have a common suction source and are allowed to have a common heat exchanger and common discharge piping. Thus to meet the LCO, both pumps in one loop or one pump in each of the two loops must he OPERABLE.

Since piping and heat exchangers are passive components that are assumed to not fail, they are allowed to he common to both s uhsystems. . .. Based on the definition of an OPERABLE subsystem, it is clear that having a single loop ofRHRSW out of service because of 4.16 kV Bus work on Unit 1 will not preclude Unit 2 from having two OPERABLE RHR shutdown cooling subsystems.

For example, if 4.16 kV Bus 1A201 were out of service on Unit 1, the 'A' loop of RHRSW would not be OPERABLE.

Unit 2, however, could credit both 'B' loop RHR pumps, the 'B' heat exchanger and the associated piping and valves for the required two OPERABLE RHR shutdown cooling subsystems.

For this example, the 'B' loop ofRHRSW would be available for cooling the 'B' loop RHR heat exchanger.

Similarly, if 4.16 kV Bus 1A202 were out of service on Unit 1, the 'B' loop of RHRSW would not be OPERABLE.

Unit 2, however, could credit both 'A' loop RHR pumps, the 'A' heat exchanger and the associated piping and valves for the required two OPERABLE RHR shutdown cooling subsystems.

For this example, the 'A' loop ofRHRSW would be available for cooling the 'A' loop RHR heat exchanger.

Based on the capability described above, Unit 2 would not have to enter LCO 3.4.8, Condition A, Action Required A.2. Therefore, if Unit 2 is shut down during the extended Completion Time, there should be no need to enter or satisfy the Required Action A.2 of Technical Specification Section 3 .4.8.

NRC Question #2:

Background:

Attachment 1 to PLA-6828 Page 3 of 19 In the license amendment request, the licensee justified the proposed extended Completion Time for Required Actions A.3 and B of Technical Specification (TS) 3.7.1, "Residual Heat Removal Service Water (RHRSW) System and the Ultimate Heat Sink (UHS)," by considering the reduced heat load on the UHS of the already shutdown Unit 1. Issue: The proposed changes for TS 3. 7.1 for Unit 2 makes no mention of the requirement that Unit 1 be shutdown during the extended Completion Time for Required Actions A.3 and B of TS 3. 7 .1. Request: Explain why the proposed TS change for TS 3. 7.1 does not include a provision that Unit 1 be in Mode 4 or 5 or no mode. PPL Response to NRC Question 2: The footnote for Technical Specification 3.8.7 Condition C and 3.7.1 Conditions A & B have been modified to state that for the 96-hour time frame to apply, Unit 1 must be in either mode 4 or 5. The footnote now reads as follows: See Attachment 2 for the revised technical specification pages.

NRC Question #3:

Background:

Attachment 1 to PLA-6828 Page 4 of 19 The licensee plans to de-energize Unit 1 AC electrical power distribution subsystems 1A201, 1A203, 1A202, and 1A204 one bus at a time. Unit 1 will be shutdown, but these buses also energize some loads for Unit 2. The licensee has identified the ESW pumps, RHRSW LOOP Return Valves, Standby Gas Treatment System (SBGT) Division 1 and 2loads, the Control Room Emergency Outside Air Supply (CREOAS) System Division 1 and 2 loads, and the Control Room Floor Cooling System Division 1 and 2 loads as Unit 2 loads powered by these buses. The licensee has identified the effect of de-energizing these loads upon the Technical Specifications.

Issue: The NRC staff wants to ensure that the licensee has considered every load powered by these buses and the effect upon safety of de-energizing these loads. The licensee must ensure that when de-energizing each bus that no safety function is lost and that all Technical Specifications (TS) limited conditions of operability (LCO) are met and/or REQUIRED ACTIONS for CONDITIONS are identified.

Request: For each bus to be de-energized, identify each electrical load that is either a) safety related, b) important to safety [see Note1], or c) affects any LCO ofthe Technical Specifications.

Discuss any effect upon adherence to the Technical Specifications or other safety considerations when each load is de-energized.

[The loads identified above in Background have already been considered and need not be listed]. (Note 1): Encompasses plant features covered in the General Design Criteria as discussed in FSAR Section 3.1, "Conformance with NRC General Design Criteria." Clarification during the March 19, 2012 Conference call: The NRC would like for each ofthe Unit 1 4.16kV Buses a listing of the loads that when the bus is de-energized provide an impact to Unit 2. For each load, the NRC would like a statement indicating if there is a Unit 2 Technical Specification impact and a summary statement for each Unit 2 impacted load as to why there is no safety impact to Unit 2 when the Unit 1 Bus is de-energized.

PPL Response to NRC Question 3: Attachment 1 to PLA-6828 Page 5 of 19 The requested information is provided in Table 1 below. Table 1 contains all Unit 1 4.16 kV ESS Bus loads that have an impact on Unit 2 including the loads referenced above.

TABLE 1 Attachment 1 to PLA-6828 Page 6 of19 4.16 kV Bus 1A201 -Unit 2 & Common Loads Mfected by De-Energization with LCO or TRO Implications Power Component Component Description Applicable Comments Source # Unit2 LCO/TRO 4.16 kV Bus OP504A Emergency Service Water LCO 3.7.2 Loss of 1 ESW Pump is a 7-day completion time 1A201 (ESW)PumpA Motor HV-01224A1 Residual Heat Removal LCO 3.6.2.3 The loss of power to the spray pond return valves Control HV-01224A2 Service Water (RHRSW) LCO 3.6.2.4 results in the following:

Center HV-01222A Spray Pond Return Valves LCO 3.5.1 (MCC) LCO 3.7.1

  • One loop of RHRSW inoperable due to loss of OB517 LCO 3.7.2 flow path (LCOs 3. 7.1 and 3. 7.2 -72 hour Technical completion time-part of Technical Requirements Specification amendment request) for Operation
  • One subsystem of RHR suppression pool spray inoperable due to the loss ofRHRSW to the RHR heat exchanger. (LCO 3.6.2.4-7 day completion time)
  • One Unit 1 Emergency Switchgear Cooling subsystem due to the loss of Control Structure Chilled Water subsystem. (TRO 3.8.6-30 day completion time)

Power Source MCC OB517 MCC OB517 TABLE 1 (Continued)

Attachment 1 to PLA-6828 Page 7 of 19 4.16 kV Bus 1A201-Unit 2 & Common Loads Affected by De-Energization with LCO or TRO Implications Component Component Description Applicable Comments # Unit2 LCO/TRO OV521A Engineered Safeguard TRO 3.7.6 Due to the loss of this MCC, 3 fans (2 ESSW fans and OV521C Service Water (ESSW) 1 RHRSW fan) are inoperable.

This TRO requires Pumphouse Fan that at least 2 of in the ESSW Pumphouse Ventilation subsystem be restored to operable status within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> or declare the associated pumps inoperable.

Two ESW pump are declared inoperable and LCO 3. 7.2 is entered. The completion time for the restoration of 2 ESW pumps is 7 days. 2V506A RHRSW Pump Fan TRO 3.7.6 Due to the loss of this MCC, 3 fans (2 ESSW fans and 1 RHRSW fan) are inoperable.

This TRO requires that at least 2 of in the ESSW Pumphouse Ventilation subsystem be restored to operable status within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> or declare the associated pumps inoperable.

One RHRSW pump would be declared inoperable and LCO 3. 7.1 is entered. The completion time for the restoration of 1 RHRSW pump is 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. The extension of this time is the subject of the Tech Spec amendment request.

Power Source MCC 1B216 MCC 1B217 1Y216 TABLE 1 (Continued)

Attachment 1 to PLA -6828 Page 8 of19 4.16 kV Bus 1A201 -Unit 2 & Common Loads Affected by De-Energization with LCO or TRO Implications Component Component Description Applicable Comments # Unit2 LCO/TRO HV-089693A Control Structure Chilled LCO 3.7.3 With the loss of power to the Control Structure Chilled Water ESW Control Valve LCO 3.7.4 Water ESW Control Valve, the following are declared TRO 3.7.9 inoperable:

  • One Control Room Floor Cooling subsystem . (LCO 3.7.4-30 day completion time)
  • One Control Structure HV AC subsystem . (TRO 3.7.9-30 day completion time) OV201A Reactor Building LCO 3.6.4.3 One Standby Gas Treatment subsystem is inoperable Recirculation Fan due to the loss of the Reactor Building Recirculation Fan. (LCO 3 .6.4.3 -7 day completion time) Various Instrumentation for LCO 3.6.4.3 The loss of power to the 1 Y216 panel results in the various systems and loss of instrumentation and control to one SGTS control to dampers, subsystem (LCO 3.6.4.3 -7 day completion time), one including the systems CREOASS subsystem.

described above Power Source 4.16 kV Bus 1A202 MCC OB527 TABLE 1 (Continued)

Attachment 1 to PLA -6828 Page 9 of 19 4.16 kV Bus 1A202 -Unit 2 & Common Loads Mfected by De-Energization with LCO or TRO Implications Component Component Applicable Comments # Description Unit2 LCO/TRO OP504B ESWPumpB LCO 3.7.2 Loss of 1 ESW Pump is a 7-day completion time HV-01224Bl RHRSWSpray LCO 3.6.2.3 The loss of power to the spray pond return valves results in the HV-01224B2 Pond Return Valves LCO 3.6.2.4 following:

HV-01222B LCO 3.5.1 LCO 3.7.1

  • One loop of RHRSW inoperable due to loss of flow path LCO 3.7.2 (LCOs 3. 7.1 and 3. 7.2 -72 hour completion time -part of TRO 3.8.6 Technical Specification amendment request)
  • One subsystem of RHR suppression pool spray inoperable due to the loss ofRHRSW to the RHR heat exchanger. (LCO 3.6.2.4-7 day completion time)
  • One RHRpump inoperable due to the loss ofESW cooling to its motor. (LCO 3.5.1 -7 day completion time)
  • One Unit 1 Emergency Switchgear Cooling subsystem due to the loss of Control Structure Chilled Water subsystem. (TRO 3.8.6-30 day completion time)

Power Source MCC OB527 MCC OB527 MCC 1B226 TABLE 1 (Continued)

Attachment 1 to PLA -6828 Page 10 of 19 4.16 kV Bus 1A202 -Unit 2 & Common Loads Mfected by De-Energization with LCO or TRO Implications Component Component Applicable Comments # Description Unit2 LCO/TRO OV521B ESSW Pumphouse TRO 3.7.6 Due to the loss of this MCC, 3 fans (2 ESSW fans and 1 RHRSW OV521D Fan fan) are inoperable.

This TRO requires that at least 2 of in the ESSW Pumphouse Ventilation subsystem be restored to operable status within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> or declare the associated pumps inoperable.

Two ESW pump are declared inoperable and LCO 3.7.2 is entered. The completion time for the restoration of 2 ESW pumps is 7 days. 2V506B RHRSW Pump Fan TRO 3.7.6 Due to the loss of this MCC, 3 fans (2 ESSW fans and 1 RHRSW fan) are inoperable.

This TRO requires that at least 2 of in the ESSW Pumphouse Ventilation subsystem be restored to operable status within 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> or declare the associated pumps inoperable.

One RHRSW pump would be declared inoperable and LCO 3. 7.1 is entered. The completion time for the restoration of 1 RHRSW pump is 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />. The extension of this time is the subject of the Tech Spec amendment request. HV-Control Structure LCO 3.7.3 With the loss of power to the Control Structure Chilled Water ESW 089693B Chilled Water ESW LCO 3.7.4 Control Valve, the following are declared inoperable:

Control Valve TRO 3.7.9

  • One Control Room Floor Cooling subsystem. (LCO 3.7.4-30 day completion time)
  • One Control Structure HVAC subsystem. (TRO 3.7.9-30 day completion time)

Power Source MCC 1B227 1Y226 TABLE 1 (Continued)

Attachment 1 to PLA -6828 Page 11 of 19 4.16 kV Bus 1A202-Unit 2 & Common Loads Affected by De-Energization with LCO or TRO Implications Component Component Applicable Comments # Description Unit2 LCO/TRO OV201B Reactor Building LCO 3.6.4.3 One Standby Gas Treatment subsystem is inoperable due to the lost Recirculation Fan of the Reactor Building Recirculation Fan. (LCO 3.6.4.3-7 day completion time) Various Instrumentation and LCO 3.6.4.3 The loss of power to the 1 Y226 panel results in the loss of damper control for instrumentation and control to one SGTS subsystem (LCO 3.6.4.3 -various systems, 7 day completion time. including the systems described above I TABLE 1 (Continued)

Attachment 1 to PLA -6828 Page 12 of 19 4.16 kV Bus 1A203 -Unit 2 & Common Loads Mfected by De-Energization with LCO or TRO Implications Power Component Component Description Applicable Comments Source # Unit2 LCO/TRO 4.16 kV Bus OP504C ESWPumpC LCO 3.7.2 Loss of 1 ESW Pump is a 7-day completion time 1A203 4.16 kV Bus OK112A Control Structure Chiller A LCO 3.7.3 With the loss of power to the Control Structure 1A203 LCO 3.7.4 Chiller, the following are declared inoperable:

TRO 3.7.9

  • One Control Room Floor Cooling subsystem . (LCO 3.7.4-30 day completion time)
  • One Control Structure HV AC subsystem . A(TRO 3.7.9-30 day completion time) MCC 1B230 OE145A Control Structure A/C Unit LCO 3.7.3 With the loss of power to the Control Structure A/C A Heater LCO 3.7.4 Unit A Heater, the following are declared inoperable:

TRO 3.7.9

  • One Control Room Floor Cooling subsystem . (LCO 3.7.4-30 day completion time)
  • One Control Structure HV AC subsystem . (TRO 3.7.9-30 day completion time) I I TABLE 1 (Continued)

Attachment 1 to PLA -6828 Page 13 of 19 4.16 kV Bus 1A203 -Unit 2 & Common Loads Affected by De-Energization with LCO or TRO Implications Power Component Component Description Applicable Comments Source # Unit2 LCO/TRO MCC OB136 SGTS The loss of power to MCC OB136 results in one OV109A Fan LCO 3.6.4.3 SGTS subsystem (LCO 3.6.4.2-7 day completion OC886A Control Panel LCO 3.6.4.3 time) and one Control Structure HV AC subsystem OV118A Room Exchange Fan TRO 3.7.9 (LCO 3.7.9-30 day completion time) being declared OV144A Equipment Room Fan TRO 3.7.9 inoperable.

OE144A Equipment Room Heating TRO 3.7.9 Coil MCC OB136 cs With the loss of power to MCC OB136, the following OV101A CREOASS Fan LCO 3.7.3 are declared inoperable:

OP171A Chilled Water System LCO 3.7.3 (CWS) Emergency LCO 3.7.4

  • One CREOASS subsystem. (LCO 3.7.3-7 Condenser Water Pump TRO 3.7.9 day completion time)
  • One Control Structure HV AC subsystem . TRO 3.7.9 (TRO 3.7.9-30 day completion time) OP162A Chilled Water Pump LCO 3.7.3 LCO 3.7.4 TRO 3.7.9 OP122A Chiller OK112A Oil Pump LCO 3.7.3 LCO 3.7.4 TRO 3.7.9 OE143A Cont Room Emergency LCO 3.7.3 Fresh Air Heating Coil I I TABLE 1 (Continued)

Attachment 1 to PLA-6828 Page 14 of 19 4.16 kV Bus 1A203 -Unit 2 & Common Loads Affected by De-Energization with LCO or TRO Implications Power Component Component Description Applicable Comments Source # Unit2 LCO/TRO MCC OB136 OV103A Heating & Ventilation LCO 3.7.3 With the loss of power to MCC OB136, the following (continued) (H&V) System Fan LCO 3.7.4 are declared inoperable:

TRO 3.7.9 OV117A LCO 3.7.3

  • One Control Room Floor Cooling subsystem . OV115A LCO 3.7.3 (LCO 3.7.4-30 day completion time) Computer Room Ceiling LCO 3.7.4
  • One Control Structure HVAC subsystem . Fan TRO 3.7.9 (TRO 3.7.9-30 day completion time) OV116A LCO 3.7.3 Battery Room Exhaust Fan LCO 3.7.4 TRO 3.7.9 I I Power Source 1Y236 I TABLE 1 (Continued)

Attachment 1 to PLA-6828 Page 15 of 19 4.16 kV Bus 1A203 -Unit 2 & Common Loads Affected by De-Energization with LCO or TRO Implications Component Component Description Applicable Comments # Unit2 LCO/TRO Various 120 V AC instrument LCO 3.6.4.3 The loss of power to the 1 Y236 panel results in the power to Instrumentation LCO 3.3.7.1 loss of instrumentation and control to: for various systems and LCO 3.7.3

  • One Control Room Floor Cooling subsystem . (LCO 3.7.4-30 day completion time)
  • One Control Structure HV AC subsystem . (TRO 3.7.9-30 day completion time)

I I TABLE 1 (Continued)

Attachment 1 to PLA -6828 Page 16 of 19 4.16 kV Bus 1A204-Unit 2 & Common Loads Mfected by De-Enerdzation with LCO or TRO Implications Power Component Component Description Applicable Comments Source # Unit2 LCO/TRO 4.16 kV Bus OP504D ESWPumpD LCO 3.7.2 Loss of 1 ESW Pump is a 7 -day completion time 1A204 4.16 kV Bus OK112B Control Structure Chiller B LCO 3.7.3 With the loss of power to the Control Structure 1A204 LCO 3.7.4 Chiller, the following are declared inoperable:

TRO 3.7.9

  • One Control Room Floor Cooling subsystem . (LCO 3.7.4-30 day completion time)
  • One Control Structure HVAC subsystem . (TRO 3.7.9-30 day completion time) Load Center OE145B Control Structure A/C Unit LCO 3.7.3 With the loss of power to the Control Structure A/C 1B240 B Heater LCO 3.7.4 Unit A Heater, the following are declared inoperable:

TRO 3.7.9

  • One Control Room Floor Cooling subsystem . (LCO 3.7.4-30 day completion time)
  • One Control Structure HV AC subsystem . (TRO 3.7.9-30 day completion time) I I TABLE 1 (Continued)

Attachment 1 to PLA -6828 Page 17 of19 4.16 kV Bus 1A204-Unit 2 & Common Loads Affected by De-Energization with LCO or TRO Implications Power Component Component Description Applicable Comments Source # Unit2 LCO/TRO MCC OB136 SOTS OV109B Fan LCO 3.6.4.3 The loss of power to MCC OB136 results in one OC886B Control Panel LCO 3.6.4.3 SOTS subsystem (LCO 3 .6.4.3 -7 day completion OV118B Room Exchange Fan TRO 3.7.9 time), one Control Structure HV AC subsystem (LCO OV144B Equipment Room Fan TRO 3.7.9 3.7.9-30 day completion time) being declared OE144B Equipment Room Heating TRO 3.7.9 inoperable, and one vent stack radiation monitor Coil TRO 3.3.4 (TRO 3.11.2.6-30-day completion time to restore the OP560 Stack Vent Vacuum Pump TRO 3.11.2.6 monitor) inoperable.

MCC OB146 cs OV101B CREOASS Fan LCO 3.7.3 With the loss of power to MCC OB136, the following OP171B CWS Emergency are declared inoperable:

Condenser Water Pump LCO 3.7.3 LCO 3.7.4

  • One Control Room Floor Cooling subsystem . Pump LCO 3.7.4 (LCO 3.7.4-30 day completion time) TRO 3.7.9
  • One Control Structure HVAC subsystem . OP162B Chilled Water Pump LCO 3.7.3 (TRO 3.7.9-30 day completion time) LCO 3.7.4 TRO 3.7.9 OP122B Chiller OK112A Oil Pump LCO 3.7.3 LCO 3.7.4 TRO 3.7.9 OE143B Cont Room Emergency LCO 3.7.3 Fresh Air Heating Coil I I TABLE 1 (Continued)

Attachment 1 to PLA -6828 Page 18 of 19 4.16 kV Bus 1A204-Unit 2 & Common Loads Affected by De-Energization with LCO or TRO Implications Power Component Component Description Applicable Comments Source # Unit2 LCO/TRO MCC OB146 OV103B H&V System Fan LCO 3.7.3 With the loss of power to MCC OB136, the following (continued)

LCO 3.7.4 are declared inoperable:

TRO 3.7.9 OV117B Cont Room Ceiling Fan LCO 3.7.3

  • One Control Room Floor Cooling subsystem . OV115B Computer Room Ceiling LCO 3.7.3 (LCO 3.7.4-30 day completion time) Fan LCO 3.7.4
  • One Control Structure HV AC subsystem . TRO 3.7.9 (TRO 3.7.9-30 day completion time) OV116B Battery Room Exhaust Fan LCO 3.7.3 LCO 3.7.4 TRO 3.7.9 I I Power Source 1Y246 TABLE 1 (Continued)

Attachment 1 to PLA -6828 Page 19 of 19 4.16 kV Bus 1A204-Unit 2 & Common Loads Mfected by De-Ener2ization with LCO or TRO Implications Component Component Description Applicable Comments # Unit2 LCO/TRO Various 120 V AC instrument LCO 3.6.4.3 The loss of power to the 1 Y246 panel results in the power to Instrumentation LCO 3.3.7.1 loss of instrumentation and control to: for various systems, LCO 3.7.3

  • One Control Room Floor Cooling subsystem . (LCO 3.7.4-30 day completion time)
  • One Control Structure HV AC subsystem . (TRO 3.7.9-30 day completion time)

I Attachment 2 to PLA-6828 PPL Susquehanna, LLC Revised Proposed Changes to Unit 2 Technical Specification 3.8. 7 Electrical Power Systems -Distribution Systems-Operating

and Unit 2 Technical Specification

3. 7.1, Plant RHRSW System and UHS (Markups)

PPL Rev. 2: Distribution Systems-Operating 3.8.7 3.8 ELECTRICAL POWER SYSTEMS 3.8. 7 Distribution Systems-Operating LCO 3.8. 7 The electrical power distribution subsystems in Table 3.8. 7-1 shall be OPERABLE.

APPLICABILITY:

MODES 1, 2, and 3. ACTIONS CONDITION A. --------------NOTE---------------

Not applicable to DG E DC Bus OD597 One or more Unit 2 AC electrical power distribution subsystems inoperable.

B. ---------------NOTE--------------

Not applicable to DG E DC Bus OD597 One or more Unit 2 DC electrical power distribution subsystems inoperable.

C. One Unit 1 AC electrical power distribution subsystem inoperable.

SUSQUEHANNA-UNIT 2 REQUIRED ACTION ----------------Nate----------------

Enter applicable Conditions and Required Actions of LCO 3.8.4, "DC Sources-Operating," for DC source(s) made inoperable by inoperable power distribution subsystem(s).

A.1 Restore Unit 2 AC electrical power distribution subsystem(s) to OPERABLE status. B.1 Restore Unit 2 DC electrical power distribution subsystem(s) to OPERABLE status. C.1 Restore Unit 1 AC electrical power distribution subsystem to OPERABLE status. COMPLETION TIME 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> AND 16 hours1.851852e-4 days <br />0.00444 hours <br />2.645503e-5 weeks <br />6.088e-6 months <br /> from discovery of failure to meet LCO 3.8. 7 except for Condition F or G 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> 16 hours from discovery of failure to meet LCO 3.8. 7 except for Condition F orG 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> (continued)

TS I 3.8-44 Amendment 4-M, -1%,

3. 7 PLANT SYSTEMS PPL Rev. 4 RHRSW System and UHS 3.7.1 3.7.1 Residual Heat Removal Service Water (RHRSW) System and the Ultimate Heat Sink (UHS) LCO 3.7.1 Two RHRSW subsystems and the UHS shall be OPERABLE.

APPLICABILITY:

MODES 1, 2, and 3. ACTIONS -------------------------------------------------------------

N 0 TE ----------------------------------------------------------

Enter applicable Conditions and Required Actions of LCO 3.4.8, "Residual Heat Removal (RHR) Shutdown Cooling System-Hot Shutdown," for RHR shutdown cooling made inoperable by RHRSW System. CONDITION A. ---------------NOTE---------------

Separate Condition entry is allowed for each valve. One valve in Table 3.7.1-1 inoperable.

OR One valve in Table 3. 7.1-2 inoperable.

One valve in Table 3. 7.1-3 inoperable.

Any combination of valves in Table 3.7.1-1, Table 3.7.1-2, or Table 3.7.1-3 in the same return loop inoperable.

SUSQUEHANNA-UNIT 2 REQUIRED ACTION A.1 Declare the associated RHRSW subsystems inoperable.

COMPLETION TIME Immediately A.2 Establish an open flow path to the 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> UHS. A.3 Restore the inoperable valve(s) to 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> from the OPERABLE status. discovery of an inoperable RHRSW subsystem in the opposite loop from the inoperable valve(s) 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> TS I 3.7-1 Amendment §4, 400, ACTIONS CONDITION B. One Unit 2 RHRSW subsystem inoperable.

C. Both Unit 2 RHRSW subsystems inoperable.

D. Required Action and associated Completion Time not met. OR UHS inoperable.

SUSQUEHANNA-UNIT 2 REQUIRED ACTION PPL Rev. 4 RHRSW System and UHS 3.7.1 COMPLETION TIME B.1 Restore the Unit 2 RHRSW subsystem to OPERABLE status. 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> from discovery of the associated Unit 1 RHRSW subsystem inoperable AND 7 days C.1 Restore one Unit 2 RHRSW 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> from discovery subsystem to OPERABLE status. of one Unit 1 RHRSW subsystem not capable of supporting associated Unit 2 RHRSW subsystem AND 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> D.1 Be in MODE 3. 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> AND D.2 Be in MODE4. 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br /> TS I 3.7-2 156,180

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