View source for PLA-7793, Response to Request for Additional Information Regarding Proposed License Amendment Requesting a Temporary Change to the Technical Specifications to Allow Replacement of Emergency Service Water System Piping

{{Adams
| number = ML19154A125
| issue date = 06/03/2019
| title = Response to Request for Additional Information Regarding Proposed License Amendment Requesting a Temporary Change to the Technical Specifications to Allow Replacement of Emergency Service Water System Piping
| author name = Cimorelli K
| author affiliation = Susquehanna Nuclear, LLC, Talen Energy
| addressee name = 
| addressee affiliation = NRC/Document Control Desk, NRC/NRR
| docket = 05000387, 05000388
| license number = 
| contact person = 
| case reference number = EPID L-2019-LLA-0004, PLA-7793
| document type = Letter type:PLA, Response to Request for Additional Information (RAI)
| page count = 31
| project = EPID:L-2019-LLA-0004
| stage = Response to RAI
}}

=Text=
{{#Wiki_filter:TALEN~
Kevin Cimorelli          Susquehanna Nuclear, LLC Site Vice President                   769 Salem Boulevard Berwick, PA 18603 Tel. 570.542.3795 Fax 570.542.1504 Kevin.Cimorelli@TalenEnergy.com           ENERGY Attn: Document Control Desk                                                           10 CFR 50.90 U. S. Nuclear Regulatory Commission Washington, DC 20555-0001 SUSQUEHANNA STEAM ELECTRIC STATION RESPONSE TO REQUEST FOR ADDITIONAL INFORMATION REGARDING PROPOSED JUN 0 3 2019 LICENSE AMENDMENT REQUESTING A TEMPORARY CHANGE TO THE TECHNICAL SPECIFICATIONS TO ALLOW REPLACEMENT OF EMERGENCY SERVICE WATER SYSTEM PIPING                                                                           Docket No. 50-387 PLA-7793                                                                                and 50-388

==References:==
: 1) Susquehanna letter to NRC, "Proposed Amendment to Licenses NPF-14 and NPF-22: Temporary Change to the Technical Specifications to Allow Replacement ofEmergency Service Water System Piping (PLA-7751)," dated January 9, 2019 (ADAMS Accession No. ML19009A431)
: 2) NRC email to Susquehanna, "Request for Additional Information Re: License Amendment Request to Replace Emergency Service Water Piping (EPID: L-2019-LLA-0004)," dated May 7, 2019 (ADAMS Accession No.
ML19128A023)
Pursuant to 10 CFR 50.90, Susquehanna Nuclear, LLC (Susquehanna), submitted, in Reference 1, a request for an amendment to the Technical Specifications (TS) for Susquehanna Steam Electric Station (SSES), Units 1 and 2, Facility Operating License numbers NPF -14 and NPF-22. The proposed amendment would allow temporary changes toTS 3.7.1, "Residual Heat Removal Service Water (RHRSW) System and the Ultimate Heat Sink (UHS)" and TS 3.7.2, "Emergency Service Water (ESW) System," to allow for replacement ofESW System piping.
The NRC provided a Request for Additional Information (RAI) in Reference 2. Enclosure 1 to this letter provides Susquehanna's response to the NRC's RAI. Based on Susquehanna's response to the RAI in Enclosure 1, the TS markups provided in Reference 1 have been revised.
The revised TS markup pages are provided in Enclosure 2 and the revised clean TS pages are provided in Enclosure 3. The TS pages provided in Enclosures 2 and 3 of this letter supersede the TS pages provided in Enclosures 2 and 3 to Reference 1 in their entirety.

Document Control Desk PLA-7793 Susquehanna has reviewed the information supporting a finding of No Significant Hazards Consideration and the Environmental Consideration provided to the NRC in Reference 1 and determined the information provided herein does not impact the original conclusions in Reference 1.
There are no new or revised regulatory commitments contained in this submittal.
Should you have any questions regarding this submittal, please contact Ms. Melisa Krick, Manager- Nuclear Regulatory Affairs, at (570) 542-1818.
I declare under penalty of petjury that the foregoing is true and cmTect.
Executed on:        t/~./2o r]

==Enclosure:==
: 1. Response to Request for Additional Information
: 2. Revised Markup Technical Specification Pages
: 3. Revised Clean Technical Specification Pages Copy:    NRC Region I Ms. L. H. Micewski, NRC Sr. Resident Inspector Ms. T. E. Hood, NRC Project Manager Ms. J. C. Tobin, NRC Project Manager Mr. M. Shields, PA DEPIBRP

Enclosure 1 to PLA-7793 Response to Request for Additional Information

Enclosure 1 to PLA-7793 Page 1 of 2 Response to Request for Additional Information On January 9, 2019, Susquehanna Nuclear, LLC (Susquehanna), submitted a license amendment request (LAR) for the Susquehanna Steam Electric Station (SSES). Specifically, Susquehanna requested a temporary extension to select Completion Times in Technical Specification (TS) 3.7.1, Residual Heat Removal Service Water (RHRSW) System and the Ultimate Heat Sink (UHS) and TS 3.7.2, Emergency Service Water (ESW) System, to allow for replacement of ESW System piping. By email dated May 7, 2019, the NRC requested the following additional information. The response to this request for additional information (RAI) is provided below.
NRC RAI 10 CFR 50.36(c)(2) requires that, when an Limiting Conditions for Operation (LCO) of a nuclear reactor plant is not met, the licensee shall shut down the reactor or follow any remedial action permitted by the technical specification until the condition can be met. Susquehanna Technical Specifications (TSs) list remedial actions according to described Conditions in an ACTIONS table for each TS. Each Condition has Required Actions that must be completed within a given Completion Time (CT).
The licensee proposed a CT of 14 days for TS 3.7.1 Condition B and TS 3.7.2 Conditions B and C during the replacement of ESW piping for the opposite unit. The proposed CTs are modified by footnotes which identifies that the temporary extension is only applicable during ESW piping replacement and will expire in 2026 for Unit 2 and 2027 for Unit 1.
In Enclosure 1 of the LAR, the licensee provided an evaluation of the proposed changes.
Section 3.3 of this enclosure contains a list of compensatory measures the licensee will implement during the evolution to replace the ESW piping. In Enclosure 5 of the LAR, the licensee made a regulatory commitment to implement the compensatory measures identified in Section 3.3 of Enclosure 1. It appears that part of the justification for the proposed temporary CTs relies on the compensatory measures in Section 3.3.
Provide justification for the proposed CT language and footnote language that does not mention the compensatory measures. Alternatively, consider rewording the proposed CT language and footnote language to indicate that the 14 day CT is contingent on implementation of the compensatory measures in Section 3.3 of Enclosure 1 to the LAR.
Susquehanna Response Susquehanna has determined it is necessary to revise the wording of the footnotes modifying Condition B to TS 3.7.1 and Conditions B and C to TS 3.7.2. Specifically, the wording for all

Enclosure 1 to PLA-7793 Page 2 of 2 such footnotes has been revised to state, This Completion Time is only applicable during the Unit [1/2, as appropriate] A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, [2026/2027, as appropriate].
The revised TS markup pages are provided in Enclosure 2 and the revised clean TS pages are provided in Enclosure 3. The TS pages provided in Enclosures 2 and 3 of this letter supersede the TS pages provided in Enclosures 2 and 3 to the Susquehanna letter dated January 9, 2019 (ADAMS Accession No. ML19009A431), in their entirety.

Enclosure 2 of PLA-7793 Revised Markup Technical Specification Pages Revised Technical Specifications Pages Unit 1 TS Pages 3.7-2, 3.7-4, and 3.7-5 Unit 2 TS Pages 3.7-1, 3.7-2, 3.7-3, 3.7-3a, 3.7-3b, 3.7-3c, 3.7-3d, 3.7-3e, and 3.7-4

RHRSW System and UHS 3.7.1 ACTIONS (continued)
CONDITION                       REQUIRED ACTION                 COMPLETION TIME B. One Unit 1 RHRSW               B.1     Restore the Unit 1 RHRSW       14 days during the subsystem inoperable.                subsystem to OPERABLE          replacement of the status.                        Unit 2 ESW piping(1)
OR 72 hours from discovery of the associated Unit 2 RHRSW subsystem inoperable AND 7 days C. Both Unit 1 RHRSW              C.1     Restore one Unit 1 RHRSW       8 hours from discovery subsystems inoperable.               subsystem to OPERABLE          of one Unit 2 RHRSW status.                        subsystem not capable of supporting associated Unit 1 RHRSW subsystem AND 72 hours D. Required Action and            D.1     Be in MODE 3.                  12 hours associated Completion Time not met.                AND OR                           D.2     Be in MODE 4.                  36 hours UHS inoperable.
(1)
This Completion Time is only applicable during the Unit 2 A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, 2027.
SUSQUEHANNA - UNIT 1                             3.7-2             Amendment 178, 182, 206, XXX

ESW System 3.7.2 3.7       PLANT SYSTEMS 3.7.2     Emergency Service Water (ESW) System LCO 3.7.2                     Two ESW subsystems shall be OPERABLE.
APPLICABILITY:                MODES 1, 2, and 3.
ACTIONS
------------------------------------------------------------NOTE-----------------------------------------------------------
Enter applicable Conditions and Required Actions of LCO 3.8.1, AC Sources, for DGs made inoperable by ESW.
-------------------------------------------------------------------------------------------------------------------------------
CONDITION                                REQUIRED ACTION                            COMPLETION TIME A. One ESW pump in each                   A.1        Restore both ESW pumps to                7 days subsystem inoperable.                           OPERABLE status.
B. One or two ESW                         B.1        Restore ESW flow to the                  14 days during the subsystems not capable                          required DGs to ensure that              replacement of the of supplying ESW flow to                        each ESW subsystem is                    Unit 2 ESW piping(1) at least three required                         supplying at least three DGs.                                            DGs.                                     OR 7 days C. One ESW subsystem                      C.1        Restore the ESW                          14 days during the inoperable for reasons                          subsystem to OPERABLE                    replacement of the other than Condition B.                         status.                                  Unit 2 ESW piping(1)
OR 7 days (1)
This Completion Time is only applicable during the Unit 2 A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, 2027.
SUSQUEHANNA - UNIT 1                                         3.7-4                                Amendment 178, XXX

ESW System 3.7.2 ACTIONS (continued)
CONDITION                               REQUIRED ACTION                            COMPLETION TIME D. Required Action and               D.1       Be in MODE 3.                             12 hours associated Completion Time of Condition A, B or         AND C not met.
D.2       Be in MODE 4.                             36 hours OR Both ESW subsystems inoperable for reasons other than Conditions A and B.
SURVEILLANCE REQUIREMENTS SURVEILLANCE                                                    FREQUENCY SR 3.7.2.1    ----------------------------------NOTE----------------------------------
Isolation of flow to individual components does not render ESW System inoperable.
               ----------------------------------------------------------------------------
Verify each ESW subsystem manual, power operated,                             In accordance with and automatic valve in the flow paths servicing safety                        the Surveillance related systems or components, that is not locked,                            Frequency Control sealed, or otherwise secured in position, is in the correct                   Program position.
SR 3.7.2.2    Verify each ESW subsystem actuates on an actual or                            In accordance with simulated initiation signal.                                                  the Surveillance Frequency Control Program SUSQUEHANNA - UNIT 1                                  3.7-5                          Amendment 178, 266, XXX

RHRSW System and UHS 3.7.1 3.7       PLANT SYSTEMS 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
------------------------------------------------------------NOTE-----------------------------------------------------------
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                                REQUIRED ACTION                            COMPLETION TIME A. --------------NOTE------------         A.1        Declare the associated                   Immediately Separate Condition entry                         RHRSW subsystems is allowed for each valve.                       inoperable.
      ----------------------------------
AND One valve in Table 3.7.1-1 inoperable.                   A.2        Establish an open flow path              8 hours to the UHS.
OR AND One valve in Table 3.7.1-2 inoperable.                   A.3        Restore the inoperable                   8 hours from the valve(s) to OPERABLE                     discovery of an OR                                               status.                                  inoperable RHRSW subsystem in the One valve in Table                                                                        opposite loop from the 3.7.1-3 inoperable.                                                                       inoperable valve(s)
AND 72 hours (continued)
SUSQUEHANNA - UNIT 2                                         3.7-1            Amendment 151, 180, 224, 238, 248, XXX

RHRSW System and UHS 3.7.1 ACTIONS (continued)
CONDITION                       REQUIRED ACTION                 COMPLETION TIME OR                                                                  OR Any combination of                                                  7 days during the valves in Table 3.7.1-1,                                            replacement of 480 V Table 3.7.1-2, or Table                                             ESS Load Center 3.7.1-3 in the same return                                          Transformers 1X210 loop inoperable.                                                    and 1X220 in Unit 1(1)
B. One Unit 2 RHRSW               B.1     Restore the Unit 2 RHRSW       7 days during the subsystem inoperable.                subsystem to OPERABLE          replacement of 480 V status.                        ESS Load Center Transformers 1X210 and 1X220 in Unit 1(1)
OR 14 days during the replacement of the Unit 1 ESW piping(2)
OR 72 hours from discovery of the associated Unit 1 RHRSW subsystem inoperable AND 7 days (1)
Upon completion of the replacement of the 480 V ESS Load Center Transformers 1X210 and 1X220 in Unit 1, this temporary extension is no longer applicable and will expire on June 15, 2020.
(2)
This Completion Time is only applicable during the Unit 1 A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, 2026.
SUSQUEHANNA - UNIT 2                             3.7-2        Amendment 151, 156, 180, 238, 248, XXX

RHRSW System and UHS 3.7.1 ACTIONS (continued)
CONDITION                         REQUIRED ACTION                   COMPLETION TIME C. Both Unit 2 RHRSW            C.1      Restore one Unit 2 RHRSW         8 hours from discovery subsystems inoperable.                subsystem to OPERABLE            of one Unit 1 RHRSW status.                          subsystem not capable of supporting associated Unit 2 RHRSW subsystem AND 72 hours D. Required Action and          D.1      Be in MODE 3.                    12 hours associated Completion Time not met.                AND OR                           D.2      Be in MODE 4.                    36 hours UHS inoperable.
SURVEILLANCE REQUIREMENTS SURVEILLANCE                                          FREQUENCY SR 3.7.1.1    Verify the water level is greater than or equal to 678 feet     In accordance with 1 inch above Mean Sea Level.                                    the Surveillance Frequency Control Program SUSQUEHANNA - UNIT 2                           3.7-3        Amendment 151, 156, 180, 224, 247, XXX

RHRSW System and UHS 3.7.1 SURVEILLANCE REQUIREMENTS (continued)
SURVEILLANCE                                                   FREQUENCY SR 3.7.1.2 Verify the average water temperature of the UHS is:                         In accordance with the Surveillance
: a. --------------------------------NOTE-------------------------------      Frequency Control Only applicable with both units in MODE 1 or 2, or                      Program with either unit in MODE 3 for less than twelve (12) hours.
                -----------------------------------------------------------------------
85&deg;F; or
: b. --------------------------------NOTE-------------------------------
Only applicable when either unit has been in MODE 3 for at least twelve (12) hours but not more than twenty-four (24) hours.
                -----------------------------------------------------------------------
87&deg;F; or
: c. --------------------------------NOTE-------------------------------
Only applicable when either unit has been in MODE 3 for at least twenty-four (24) hours.
                -----------------------------------------------------------------------
88&deg;F.
SR 3.7.1.3 Verify each RHRSW manual, power operated, and                               In accordance with automatic valve in the flow path, that is not locked,                       the Surveillance sealed, or otherwise secured in position, is in the correct                 Frequency Control position or can be aligned to the correct position.                         Program SR 3.7.1.4 Verify that valves HV-01222A and B (the spray array                         In accordance with bypass valves) close upon receipt of a closing signal and                   the Surveillance open upon receipt of an opening signal.                                     Frequency Control Program SR 3.7.1.5 Verify that valves HV-01224A1 and B1 (the large spray                       In accordance with array valves) close upon receipt of a closing signal and                    the Surveillance open upon receipt of an opening signal.                                     Frequency Control Program SUSQUEHANNA - UNIT 2                              3.7-3a                   Amendment 180, 224, 247, XXX

RHRSW System and UHS 3.7.1 SURVEILLANCE REQUIREMENTS (continued)
SURVEILLANCE                                    FREQUENCY SR 3.7.1.6 Verify that valves HV-01224A2 and B2 (the small spray      In accordance with array valves) close upon receipt of a closing signal and   the Surveillance open upon receipt of an opening signal.                    Frequency Control Program SR 3.7.1.7 Verify that valves 012287A and 012287B (the spray array    In accordance with bypass manual valves) are capable of being opened and      the Surveillance closed.                                                    Frequency Control Program SUSQUEHANNA - UNIT 2                     3.7-3b                   Amendment 180, 224, XXX

RHRSW System and UHS 3.7.1 TABLE 3.7.1-1 Ultimate Heat Sink Spray Array Valves VALVE NUMBER                              VALVE DESCRIPTION HV-01224A1                          Loop A large spray array valve HV-01224B1                          Loop B large spray array valve HV-01224A2                          Loop A small spray array valve HV-01224B2                          Loop B small spray array valve SUSQUEHANNA - UNIT 2                 3.7-3c                     Amendment 224, XXX

RHRSW System and UHS 3.7.1 TABLE 3.7.1-2 Ultimate Heat Sink Spray Array Bypass Valves VALVE NUMBER                              VALVE DESCRIPTION HV-01222A                           Loop A spray array bypass valve HV-01222B                           Loop B spray array bypass valve SUSQUEHANNA - UNIT 2                  3.7-3d                     Amendment 224, XXX

RHRSW System and UHS 3.7.1 TABLE 3.7.1-3 Ultimate Heat Sink Spray Array Bypass Manual Valves VALVE NUMBER                              VALVE DESCRIPTION 012287A                        Loop A spray array bypass manual valve 012287B                        Loop B spray array bypass manual valve SUSQUEHANNA - UNIT 2                 3.7-3e                          Amendment XXX

ESW System 3.7.2 3.7       PLANT SYSTEMS 3.7.2     Emergency Service Water (ESW) System LCO 3.7.2                     Two ESW subsystems shall be OPERABLE.
APPLICABILITY:                MODES 1, 2, and 3.
ACTIONS
------------------------------------------------------------NOTE-----------------------------------------------------------
Enter applicable Conditions and Required Actions of LCO 3.8.1, AC Sources, for DGs made inoperable by ESW.
-------------------------------------------------------------------------------------------------------------------------------
CONDITION                                REQUIRED ACTION                            COMPLETION TIME A. One ESW pump in each                   A.1        Restore both ESW pumps to                7 days subsystem inoperable.                           OPERABLE status.
B. One or two ESW                         B.1        Restore ESW flow to the                  14 days during the subsystems not capable                          required DGs to ensure that              replacement of the of supplying ESW flow to                        each ESW subsystem is                    Unit 1 ESW piping(1) at least three required                         supplying at least three DGs.                                            DGs.                                     OR 7 days C. One ESW subsystem                      C.1        Restore the ESW                          14 days during the inoperable for reasons                          subsystem to OPERABLE                    replacement of the other than Condition B.                         status.                                  Unit 1 ESW piping(1)
OR 7 days (1)
This Completion Time is only applicable during the Unit 1 A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, 2026.
SUSQUEHANNA - UNIT 2                                         3.7-4                                Amendment 151, XXX

Enclosure 3 of PLA-7793 Revised Clean Technical Specification Pages Revised Technical Specifications Pages Unit 1 TS Pages 3.7-2, 3.7-4, and 3.7-5 Unit 2 TS Pages 3.7-1, 3.7-2, 3.7-3, 3.7-3a, 3.7-3b, 3.7-3c, 3.7-3d, 3.7-3e, and 3.7-4

RHRSW System and UHS 3.7.1 ACTIONS (continued)
CONDITION                       REQUIRED ACTION                 COMPLETION TIME B. One Unit 1 RHRSW               B.1     Restore the Unit 1 RHRSW       14 days during the subsystem inoperable.                subsystem to OPERABLE          replacement of the status.                        Unit 2 ESW piping(1)
OR 72 hours from discovery of the associated Unit 2 RHRSW subsystem inoperable AND 7 days C. Both Unit 1 RHRSW              C.1     Restore one Unit 1 RHRSW       8 hours from discovery subsystems inoperable.               subsystem to OPERABLE          of one Unit 2 RHRSW status.                        subsystem not capable of supporting associated Unit 1 RHRSW subsystem AND 72 hours D. Required Action and            D.1     Be in MODE 3.                  12 hours associated Completion Time not met.                AND OR                           D.2     Be in MODE 4.                  36 hours UHS inoperable.
(1)
This Completion Time is only applicable during the Unit 2 A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, 2027.
SUSQUEHANNA - UNIT 1                             3.7-2             Amendment 178, 182, 206, XXX

ESW System 3.7.2 3.7       PLANT SYSTEMS 3.7.2     Emergency Service Water (ESW) System LCO 3.7.2                     Two ESW subsystems shall be OPERABLE.
APPLICABILITY:                MODES 1, 2, and 3.
ACTIONS
------------------------------------------------------------NOTE-----------------------------------------------------------
Enter applicable Conditions and Required Actions of LCO 3.8.1, AC Sources, for DGs made inoperable by ESW.
-------------------------------------------------------------------------------------------------------------------------------
CONDITION                                REQUIRED ACTION                            COMPLETION TIME A. One ESW pump in each                   A.1        Restore both ESW pumps to                7 days subsystem inoperable.                           OPERABLE status.
B. One or two ESW                         B.1        Restore ESW flow to the                  14 days during the subsystems not capable                          required DGs to ensure that              replacement of the of supplying ESW flow to                        each ESW subsystem is                    Unit 2 ESW piping(1) at least three required                         supplying at least three DGs.                                            DGs.                                     OR 7 days C. One ESW subsystem                      C.1        Restore the ESW                          14 days during the inoperable for reasons                          subsystem to OPERABLE                    replacement of the other than Condition B.                         status.                                  Unit 2 ESW piping(1)
OR 7 days (1)
This Completion Time is only applicable during the Unit 2 A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, 2027.
SUSQUEHANNA - UNIT 1                                         3.7-4                                Amendment 178, XXX

ESW System 3.7.2 ACTIONS (continued)
CONDITION                               REQUIRED ACTION                            COMPLETION TIME D. Required Action and               D.1       Be in MODE 3.                             12 hours associated Completion Time of Condition A, B or         AND C not met.
D.2       Be in MODE 4.                             36 hours OR Both ESW subsystems inoperable for reasons other than Conditions A and B.
SURVEILLANCE REQUIREMENTS SURVEILLANCE                                                    FREQUENCY SR 3.7.2.1    ----------------------------------NOTE----------------------------------
Isolation of flow to individual components does not render ESW System inoperable.
               ----------------------------------------------------------------------------
Verify each ESW subsystem manual, power operated,                             In accordance with and automatic valve in the flow paths servicing safety                        the Surveillance related systems or components, that is not locked,                            Frequency Control sealed, or otherwise secured in position, is in the correct                   Program position.
SR 3.7.2.2    Verify each ESW subsystem actuates on an actual or                            In accordance with simulated initiation signal.                                                  the Surveillance Frequency Control Program SUSQUEHANNA - UNIT 1                                  3.7-5                          Amendment 178, 266, XXX

RHRSW System and UHS 3.7.1 3.7       PLANT SYSTEMS 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
------------------------------------------------------------NOTE-----------------------------------------------------------
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                                REQUIRED ACTION                            COMPLETION TIME A. --------------NOTE------------         A.1        Declare the associated                   Immediately Separate Condition entry                         RHRSW subsystems is allowed for each valve.                       inoperable.
      ----------------------------------
AND One valve in Table 3.7.1-1 inoperable.                   A.2        Establish an open flow path              8 hours to the UHS.
OR AND One valve in Table 3.7.1-2 inoperable.                   A.3        Restore the inoperable                   8 hours from the valve(s) to OPERABLE                     discovery of an OR                                               status.                                  inoperable RHRSW subsystem in the One valve in Table                                                                        opposite loop from the 3.7.1-3 inoperable.                                                                       inoperable valve(s)
AND 72 hours (continued)
SUSQUEHANNA - UNIT 2                                         3.7-1            Amendment 151, 180, 224, 238, 248, XXX

RHRSW System and UHS 3.7.1 ACTIONS (continued)
CONDITION                       REQUIRED ACTION                 COMPLETION TIME OR                                                                  OR Any combination of                                                  7 days during the valves in Table 3.7.1-1,                                            replacement of 480 V Table 3.7.1-2, or Table                                             ESS Load Center 3.7.1-3 in the same return                                          Transformers 1X210 loop inoperable.                                                    and 1X220 in Unit 1(1)
B. One Unit 2 RHRSW               B.1     Restore the Unit 2 RHRSW       7 days during the subsystem inoperable.                subsystem to OPERABLE          replacement of 480 V status.                        ESS Load Center Transformers 1X210 and 1X220 in Unit 1(1)
OR 14 days during the replacement of the Unit 1 ESW piping(2)
OR 72 hours from discovery of the associated Unit 1 RHRSW subsystem inoperable AND 7 days (1)
Upon completion of the replacement of the 480 V ESS Load Center Transformers 1X210 and 1X220 in Unit 1, this temporary extension is no longer applicable and will expire on June 15, 2020.
(2)
This Completion Time is only applicable during the Unit 1 A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, 2026.
SUSQUEHANNA - UNIT 2                             3.7-2        Amendment 151, 156, 180, 238, 248, XXX

RHRSW System and UHS 3.7.1 ACTIONS (continued)
CONDITION                         REQUIRED ACTION                   COMPLETION TIME C. Both Unit 2 RHRSW            C.1      Restore one Unit 2 RHRSW         8 hours from discovery subsystems inoperable.                subsystem to OPERABLE            of one Unit 1 RHRSW status.                          subsystem not capable of supporting associated Unit 2 RHRSW subsystem AND 72 hours D. Required Action and          D.1      Be in MODE 3.                    12 hours associated Completion Time not met.                AND OR                           D.2      Be in MODE 4.                    36 hours UHS inoperable.
SURVEILLANCE REQUIREMENTS SURVEILLANCE                                          FREQUENCY SR 3.7.1.1    Verify the water level is greater than or equal to 678 feet     In accordance with 1 inch above Mean Sea Level.                                    the Surveillance Frequency Control Program SUSQUEHANNA - UNIT 2                           3.7-3        Amendment 151, 156, 180, 224, 247, XXX

RHRSW System and UHS 3.7.1 SURVEILLANCE REQUIREMENTS (continued)
SURVEILLANCE                                                   FREQUENCY SR 3.7.1.2 Verify the average water temperature of the UHS is:                         In accordance with the Surveillance
: a. --------------------------------NOTE-------------------------------      Frequency Control Only applicable with both units in MODE 1 or 2, or                      Program with either unit in MODE 3 for less than twelve (12) hours.
                -----------------------------------------------------------------------
85&deg;F; or
: b. --------------------------------NOTE-------------------------------
Only applicable when either unit has been in MODE 3 for at least twelve (12) hours but not more than twenty-four (24) hours.
                -----------------------------------------------------------------------
87&deg;F; or
: c. --------------------------------NOTE-------------------------------
Only applicable when either unit has been in MODE 3 for at least twenty-four (24) hours.
                -----------------------------------------------------------------------
88&deg;F.
SR 3.7.1.3 Verify each RHRSW manual, power operated, and                               In accordance with automatic valve in the flow path, that is not locked,                       the Surveillance sealed, or otherwise secured in position, is in the correct                 Frequency Control position or can be aligned to the correct position.                         Program SR 3.7.1.4 Verify that valves HV-01222A and B (the spray array                         In accordance with bypass valves) close upon receipt of a closing signal and                   the Surveillance open upon receipt of an opening signal.                                     Frequency Control Program SR 3.7.1.5 Verify that valves HV-01224A1 and B1 (the large spray                       In accordance with array valves) close upon receipt of a closing signal and                    the Surveillance open upon receipt of an opening signal.                                     Frequency Control Program SUSQUEHANNA - UNIT 2                              3.7-3a                   Amendment 180, 224, 247, XXX

RHRSW System and UHS 3.7.1 SURVEILLANCE REQUIREMENTS (continued)
SURVEILLANCE                                    FREQUENCY SR 3.7.1.6 Verify that valves HV-01224A2 and B2 (the small spray      In accordance with array valves) close upon receipt of a closing signal and   the Surveillance open upon receipt of an opening signal.                    Frequency Control Program SR 3.7.1.7 Verify that valves 012287A and 012287B (the spray array    In accordance with bypass manual valves) are capable of being opened and      the Surveillance closed.                                                    Frequency Control Program SUSQUEHANNA - UNIT 2                     3.7-3b                   Amendment 180, 224, XXX

RHRSW System and UHS 3.7.1 TABLE 3.7.1-1 Ultimate Heat Sink Spray Array Valves VALVE NUMBER                              VALVE DESCRIPTION HV-01224A1                          Loop A large spray array valve HV-01224B1                          Loop B large spray array valve HV-01224A2                          Loop A small spray array valve HV-01224B2                          Loop B small spray array valve SUSQUEHANNA - UNIT 2                 3.7-3c                     Amendment 224, XXX

RHRSW System and UHS 3.7.1 TABLE 3.7.1-2 Ultimate Heat Sink Spray Array Bypass Valves VALVE NUMBER                              VALVE DESCRIPTION HV-01222A                           Loop A spray array bypass valve HV-01222B                           Loop B spray array bypass valve SUSQUEHANNA - UNIT 2                  3.7-3d                     Amendment 224, XXX

RHRSW System and UHS 3.7.1 TABLE 3.7.1-3 Ultimate Heat Sink Spray Array Bypass Manual Valves VALVE NUMBER                              VALVE DESCRIPTION 012287A                        Loop A spray array bypass manual valve 012287B                        Loop B spray array bypass manual valve SUSQUEHANNA - UNIT 2                 3.7-3e                          Amendment XXX

ESW System 3.7.2 3.7       PLANT SYSTEMS 3.7.2     Emergency Service Water (ESW) System LCO 3.7.2                     Two ESW subsystems shall be OPERABLE.
APPLICABILITY:                MODES 1, 2, and 3.
ACTIONS
------------------------------------------------------------NOTE-----------------------------------------------------------
Enter applicable Conditions and Required Actions of LCO 3.8.1, AC Sources, for DGs made inoperable by ESW.
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CONDITION                                REQUIRED ACTION                            COMPLETION TIME A. One ESW pump in each                   A.1        Restore both ESW pumps to                7 days subsystem inoperable.                           OPERABLE status.
B. One or two ESW                         B.1        Restore ESW flow to the                  14 days during the subsystems not capable                          required DGs to ensure that              replacement of the of supplying ESW flow to                        each ESW subsystem is                    Unit 1 ESW piping(1) at least three required                         supplying at least three DGs.                                            DGs.                                     OR 7 days C. One ESW subsystem                      C.1        Restore the ESW                          14 days during the inoperable for reasons                          subsystem to OPERABLE                    replacement of the other than Condition B.                         status.                                  Unit 1 ESW piping(1)
OR 7 days (1)
This Completion Time is only applicable during the Unit 1 A and B ESW piping replacement while the compensatory measures identified in Section 3.3 of Enclosure 1 to letter PLA-7751 are in place. Upon completion of pipe replacement activities, this temporary extension is no longer applicable and will expire on June 25, 2026.
SUSQUEHANNA - UNIT 2                                         3.7-4                                Amendment 151, XXX}}