ML22263A043
| ML22263A043 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 09/07/2022 |
| From: | Duke Energy |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| TR-NUC-CN-014760 | |
| Download: ML22263A043 (10) | |
Text
Date : 9/7/2022 Distribution: Duke Energy Document Transmittal # : TR-NUC-CN-014760
- 1. (CNS) U S NUC REG WASHINGTON DC
- 2. Andrews, Sherry E DOCUMENTTRANSMITTALFORM
Purpose:
~
Released By:
- 3. Byers, Kaitlyn Facility: CATAWBA NUCLEAR STATION Duk~ Ea~rgi
- 4. CNS - WCC/SSA SUBJECT 4800 Concord Road
- 6. CNS COMPL FILE (ORIG)X CN04DM
- 11. CONTROL ROOM SSA
- 12. Edmond, Russell L
- 13. Johnson, Christina
- 14. Lowery, Tonya Sullivan
- 15. Mironenko, Artur N
- 16. OPS TRAINING
- 17. Owens, Lori
- 18. Pursley, Sandy
- 19. WESTINGHOUSE ELECTRIC CO LLC Page 1 of 1 Document ID 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 LICN - CN - CNS-SLC-16.10 002 - ISSUED FYIIE FYIIE FY!fE FY!fLP FY!fE FYIIE FY!fE FY!fE FY!fE FYIIE FYIILP FYIIE FY!fE FY!fE FY!fE FYIIE FYIJE FYIJE FYIIE LICN - CN - CNS-SLC-LOES - 112 - ISSUED FYIIE FYIIE FYIIE FYIILP FYIIE FYIIE FYIIE FYIIE FYIIE FYIIE FYIILP FYIIE FYIIE FYIIE FYIIE FYIIE FYIIE FYIIE FYIJE Remarks:
LIST OF EFFECTIVE SECTIONS SECTION REVISION NUMBER REVISION DATE TABLE OF CONTENTS 16 08/17/22 16.1 1 08/27/08 16.2 3 08/17/22 16.3 1 08/21/09 16.5-1 7 03/30/21 16.5-2 Deleted 16.5-3 2 09/19/19 16.5-4 1 01/27/22 16.5-5 1 01/28/10 16.5-6 3 08/17/22 16.5-7 2 02/06/15 16.5-8 Deleted 16.5-9 Deleted 03/02/21 16.5-10 Deleted 16.6-1 0 10/09/02 16.6-2 Deleted 16.6-3 2 01/27/22 16.6-4 3 08/17/22 16.6-5 3 07/07/20 16.7-1 1 08/21/09 16.7-2 4 02/03/11 16.7-3 5 11/21/19 16.7-4 2 08/21/09 16.7-5 7 06/01/22 Catawba Units 1 and 2 Page 1 Revision 112
LIST OF EFFECTIVE SECTIONS SECTION REVISION NUMBER REVISION DATE 16.7-6 3 06/10/16 16.7-7 2 06/14/22 16.7-8 2 08/21/09 16.7-9 15 08/17/22 16.7-10 10 01/27/22 16.7-11 1 08/21/09 16.7-12 1 08/21/09 16.7-13 3 06/10/16 16.7-14 1 08/21/09 16.7-15 2 01/27/22 16.7-16 0 06/08/09 16.7-17 0 02/10/15 16.7-18 0 05/10/16 16.8-1 8 01/27/22 16.8-2 3 12/18/19 16.8-3 2 06/14/22 16.8-4 2 11/05/07 16.8-5 3 08/21/09 16.9-1 10 01/29/19 16.9-2 6 08/03/17 16.9-3 5 07/03/18 16.9-4 5 09/11/17 16.9-5 11 10/08/19 16.9-6 12 07/03/18 Catawba Units 1 and 2 Page2 Revision 112
LIST OF EFFECTIVE SECTIONS SECTION REVISION NUMBER REVISION DATE 16.9-7 4 08/21/09 16.9-8 5 08/21/09 16.9-9 3 08/21/09 16.9-10 5 08/21/09 16.9-11 3 08/21/09 16.9-12 3 02/10/15 16.9-13 4 09/27/16 16.9-14 1 09/25/06 16.9-15 2 08/21/09 16.9-16 2 08/21/09 16.9-17 0 10/09/02 16.9-18 Deleted 16.9-19 3 02/20/12 16.9-20 0 10/09/02 16.9-21 1 10/13/16 16.9-22 3 08/17/22 16.9-23 5 08/03/17 16.9-24 2 10/24/06 16.9-25 2 08/21/09 16.9-26 1 11/15/18 16.10-1 1 08/21/09 16.10-2 1 10/24/06 16.10-3 1 08/21/09 16.10-4 0 08/04/20 Catawba Units 1 and 2 Page3 Revision 112
LIST OF EFFECTIVE SECTIONS SECTION REVISION NUMBER REVISION DATE 16.10-5 2 09/07/22 16.11-1 1 07/27/13 16.11-2 9 07/07/22 16.11-3 0 10/09/02 16.11-4 1 08/21/09 16.11-5 0 10/09/02 16.11-6 3 08/03/15 16.11-7 14 05/03/22 16.11-8 0 10/09/02 16.11-9 0 10/09/02 16.11-10 1 08/21/09 16.11-11 1 03/20/03 16.11-12 0 10/09/02 16.11-13 1 07/27/13 16.11-14 0 10/09/02 16.11-15 0 10/09/02 16.11-16 1 10/24/11 16.11-17 0 10/09/02 16.11-18 1 08/21/09 16.11-19 0 10/09/02 16.11-20 3 11/21/19 16.11-21 0 10/09/02 16.12-1 0 10/09/02 16.13-1 1 08/03/17 16.13-2 Deleted Catawba Units 1 and 2 Page4 Revision 112
LIST OF EFFECTIVE SECTIONS SECTION REVISION NUMBER REVISION DATE 16.13-3 Deleted 16.13-4 4 10/04/21 Catawba Units 1 and 2 Page 5 Revision 112
Auxiliary Feedwater Turbine Driven Pump Pit (WL) Sump Pumps 16.10-5 16.10 STEAM AND POWER CONVERSION SYSTEM 16.10-5 Auxiliary Feedwater Turbine Driven Pump Pit (WL) Sump Pumps COMMITMENT The following Liquid Radwaste (WL) sump pumps in the Turbine Driven Auxiliary Feedwater (CA) pump pit shall be FUNCTIONAL on the associated Unit to support the associated Turbine Driven CA pump operability.
- Turbine Driven CA Pump A sump pump
- Turbine Driven CA Pump B sump pump APPLICABILITY: MODES 1, 2, and 3 MODE 4 when steam generator relied upon for heat removal.
REMEDIAL ACTIONS CONDITION REQUIRED ACTION COMPLETION TIME A. One of the two required A.1 Apply TS 3.7.5 action B for Immediately CAPT Sump Pumps is the associated CAPT.
not functional.
B. One of the two required B.1 Apply TS 3.7.5 action C for 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> following CAPT Sump Pumps is two AFW trains inoperable. concurrent non not functional. functionality of a CAPT sump pump AND and inoperability of the opposite train The opposite train EOG EOG (per TS 3.8.1 on the affected Unit is required action B.3) inoperable.
C. Both required CAPT C.1 Declare the CAPT Immediately Sump Pumps are not inoperable per the functional. applicable condition of LCO 3.7.5.
D. 'A' train CAPT sump D.1 Apply SLC 16.7-9 Immediately pump not functional. Condition A.
- If a MDCAP is concurrently inoperable per LCO 3.7.5, this condition introduces no further inoperability (e.g. one CAPT sump pump not functional with one of the MDCAP's inoperable does NOT require entry into LCO 3.7.5 Condition C).
Catawba Units 1 and 2 16.10-5-1 Revision 2
Auxiliary Feedwater Turbine Driven Pump Pit (WL) Sump Pumps 16.10-5 TESTING REQUIREMENTS
==============,===
TEST* FREQUENCY TR 16.10-5-1 Verify each sump pump's flow rate is greater than or In Accordance equal to the required flow rate. with the INSERVICE TEST PROGRAM BASES The CAPT Sump Pumps are safety related components with the design basis to prevent flooding of the CAPT sump. Flooding in the CAPT sump could render the CAPT incapable of performing its required safety function. To ensure the CAPT maintains this capability, at least one of the two CAPT sump pumps must be maintained functional.
Furthermore, independence must be maintained between the CAPT and the two (2) Motor Driven CA Pumps (MDCAP) such that failure of a single plant component cannot render both a MDCAP and the CAPT Inoperable simultaneously (assuming loss of non-emergency offsite power and a CA autostart). If only one of the two CAPT sump pumps is functional, the failure of a single EOG to start could prevent both the CAPT and MDCAP associated with the failed EOG from performing their required safety functions. The CAPT would be flooded by its lube oil cooler sump input. Therefore, two CAPT sump pumps are required functional to support the operability of the CAPT with respect to Technical Specification 3.7.5.
The CAPT provides residual heat removal during an SSF event. The unit related A train CAPT sump pump is powered from EMXS on the respective unit which can be powered from the SSF. Therefore, the A train CAPT sump pump is required to support Standby Shutdown System (SSS) per SLC 16.7-9.
TR 16.10-5-1 verifies the CAPT pit sump pumps start on high level and deliver >50 gpm flow in accordance with Reference 3, 4, and 5.
Examples:
If the CAPT sump pump "A" is not functional, a single failure of "B" DG coincident with a LOOP, would render both the "B" motor-driven CA pump and CAPT sump pump "B" inoperative. Since both CAPT sump pumps are now inoperable, the CAPT will become flooded within hours due to lube oil cooler input and potential input from doghouse flooding due to a feedline break, along with motor-driven CA pump "B". Therefore, if either of the CAPT sump pumps is inoperable, Catawba ITS 3.7.5 is not satisfied since single failure criteria cannot be met and thus, the ACTION statement for one CA pump inoperable shall be entered (ACTION B).
If a motor-driven CA pump and either of the CAPT sump pumps are non-Catawba Units 1 and 2 16.10-5-2 Revision 2
Auxiliary Feedwater Turbine Driven Pump Pit (WL) Sump Pumps 16.10-5 BASES (continued) functional, ACTION B still applies since two independent CA pumps are still considered to be Operable. This is because the additional failure of an emergency diesel generator (DG) need not be considered while operating within the restrictions of the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> ACTION statement.
Similarly, if an emergency diesel generator (DG) is inoperable and the CAPT sump pump of the same train is non functional, then the CAPT may be considered Operable for the purpose of satisfying ACTION B.
Finally, if a CAPT sump pump is not functional and the opposite DG is inoperable, then ITS 3.7.5 ACTION C applies and the Required Action is to be in Mode 3 in 6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br />. However, Required Actions A.2. and 8.3. of ITS 3.8.1 also apply to this situation. Condition A applies when an offsite circuit is Inoperable. Condition B applies when an onsite DG circuit is Inoperable. The CAPT sump pumps must be considered "required redundant features" and per Required Action 8.3., the sump pump with the Inoperable DG must be declared non-functional 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> from discovery of the DG being Inoperable. Per the Bases Section 3.8.1 (8.3),
discovering one required DG Inoperable coincident with one or more inoperable required support or supported features, or both, that are associated with the Operable DG, results in starting the Completion Time for the Required Action. Four hours from the discovery of these events existing concurrently is Acceptable because it minimizes risk while allowing time for restoration before subjecting the unit to transients associated with shutdown. In this Condition, the remaining Operable DG and Operable offsite circuits are adequate to supply the remaining CAPT sump pump. Thus, single failure protection for the required feature's function may have been lost; however, function has not been lost. The 4-hour Completion Time takes into account Operability of the redundant counterpart to the Inoperable required feature, as well as the capacity/capability of the remaining AC sources, a reasonable time for repairs, and the low probability of a OBA occurring during this period.
Per ITS 3.8.1 Condition G, the lnoperability of both DGs results in a 2-hour Completion time to return one DG to Operable status, and subsequent entry to ITS 3.0.3. ITS 3.7.5 Condition D for three CA trains in Modes 1, 2 or 3 results in suspension of 3.0.3 and all other LCO required Actions requiring Mode changes. The CAPT sump pumps, while support components for the CAPT, do not render it Inoperable since they can be powered by onsite circuits. Therefore, the suspension of 3.0.3 does not apply if the CAPT is Operable but both DGs are Inoperable.
TR 16.10-5-1 verifies the CA Turbine Driven Sump Pumps start on High level and delivers >50 gpm flow in accordance with Reference 1b, 4 and 5. The In-Service Testing also monitors component vibration and forward and reverse flow through check valves in the discharge flowpath.
Catawba Units 1 and 2 16.10-5-3 Revision 2
Auxiliary Feedwater Turbine Driven Pump Pit (WL) Sump Pumps 16.10-5 REFERENCES 1. Catawba Updated Final Safety Analysis Report
- a. Section 11.2.2.2.4.4, Auxiliary Feedwater Pump Pit Sumps
- b. Section 11.2.2.2.5.7, Auxiliary Feedwater Pump Pit Sump Pumps
- c. Section 7.6.6, Liquid Radwaste System
- d. Section 10.4.9, Auxiliary Feedwater System
- 2. CNC-1223.42-00-0089, Evaluation of Doghouse Flood on Motor Driven CA pump Operability.
- 3. Technical Specifications
- a. 3.7.5, Auxiliary Feedwater (AFW) System
- b. 3.8.1, AC Sources Operating
- c. 3.8.9, Distribution Systems Operating
- 4. CNTC-1565-WL-P016-01, Steam Turbine Driven Auxiliary Feedwater Sump Pumps.
- 5. CNTC-2565-WL-P006-01, Steam Turbine Driven Auxiliary Feedwater Sump Pumps.
- 6. CNC-1223.42-00-0080, Determination of CATDP Operating Duration Before Flooding From Normal Sump Inputs Leads to Pump Failure as Result of an ELAP.
- 7. CNC-1223.15-00-0022, Orifice Sizing for Doghouse Drains.
Catawba Units 1 and 2 16.10-5-4 Revision 2