LR-N17-0034, Salem Generating Station, Units 1 & 2, Revision 29 to Updated Final Safety Analysis Report, Tables 6.3-1 Through 6.3-14

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Salem Generating Station, Units 1 & 2, Revision 29 to Updated Final Safety Analysis Report, Tables 6.3-1 Through 6.3-14
ML17046A406
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Issue date: 01/30/2017
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LR-N17-0034
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-TABLE 6.3-2 ACCUMULATOR DESIGN PARAMETERS Number Type Design pressure, psig Design temperature, °F Operating temperature, °F Normal operating pressure, psig Minimum operating pressure, psig Total volume, ft3 Minimum operating water volume, ft3 Volume N::: gas, Boron concentration (as boric acid) Nominal, ppm Minimum, ppm Code SGS-UfSAR 1 of 1 4 Stainless steel clad/carbon steel 700 300 50-150 650 595.5 1350 831.9 500 2000 1900 ASME III Class C Revision 19 November 19, 2001 I TABLE 6.3-3 BORON INJECTION TANK DESIGN PARAMETERS Number Total volume, gal (also useable volume) Design pressure, psig Design temperature, °F Material Code 1 of 1 SGS-UFSAR 1 900 2825 150-180 SS Clad Carbon Steel ASME III, Class C Revision 27 November 25, 2013 TABLE 6.3-4 REFUELING WATER STORAGE TANK DESIGN PARAMETERS Number Tank capacity, gal. Minimum volume, (solution) gal. Operating pressure Operating temperature, °F OUtside diameter, ft (approx.) Straight side height, ft Material Design pressure Design temperature, °F Boron concentration, Nominal, ppm Minimum, ppm Maximum, ppm SGS-UFSAR 1 of 1 1 400,000 364,500 atmospheric 38 48 ASTM-A240 Type 304L Stainless steel atmospheric 120 2400 2300 2500 Revision 16 January 31, 1998 TABLE 6.3-5 DESIGN PARAMETERS -ECCS PUMPS Number Design pressure, psig Design temperature, °F Design flow rate, gpm Design head, ft. Max. flow rate, gpm Centrifugal Charging Pumps 2 2800 300 150 5800 560 Head at max. flow rate, ft 1300 Discharge pressure at shutoff, psig Motor horsepower Type Material

  • 2670 600 Horizontal multi-stage centrifugal Stainless steel Safety Injection Pumps 2 1700 300 425 2500 675 1500 1520 400 Horizontal multi-stage centrifugal Stainless steel Residual Heat Removal Pumps 2 600 400 3000 350
  • 4500 300 170 400 Vertical single-stage centrifugal Stainless steel During the recirculation modes, higher flows can occur depending on system failure assumption. 1 of 1 SGS-UFSAR Revision 27 November 25, 2013 TABLE 6.3-6 SEQUENCE OF CHANGEOVER OPERATION INJECTION TO RECIRCULATION The following sequence of opera::ions is used when terminating the injection mode and starting the recirculation mode when low level is reached in the RWST. Note: Because initiating events in MODES 3 and 4 may start at lower pressures and temperatures, the steps/sequences below may vary slightly: Unit 1 1. Confirm Minimum Sump Level l. a N/A 2. Reset SEC, SI and Motor Control Centers 2. a N/A 3. Stop RHR Pumps 11 and 12 3.a Close RHR Cross-tie Valves (RE19) 3.b Ensure both RHR pumps have stopped 3.c Remove Lockouts for SJ44, 69, 68, and 67 valves Ur.it 2 Confirm Minimum Sump Level Enable Semi-Automatic Switchover N/A Remove Lockouts for SJ69, 68 and 67 N/A N/A N/A N/A 3. d If an RHR pump fails to stop, remove N/A lockout for failed pumps' RHR Cold leg Isolation valve (SJ49) and close valve 3.e Close RWST/RHR Isolation Valves (RH4) 3.f one CS pump, if two are operating 3.g N/A 3. h N/A 3. i N/A 3. j N/A 3. k N/A 3.1 N/A 4. 5. Determine Diesel Ensure that at least 2 CC punps are 5. a Open CC\tV water supply to RHR Heat valves (CC16) SGS-UFSAR 1 of 4 N/A N/A SJ44 Valves Open Start RHR pumps 21 and 22 Close SJ69 Valve Reset SI, SEC and Motor Control Centers one CS pump Close RHR Cross-tie Valves (RH19) Determine Diesel Loading Ensure that at least 2 CC pumps are operating Ensure CCW water supply to RHR Heat valves (CC16) Open Revision 25 October 26, 2010 TABLE 6.3-6 (Cont.) SEQUENCE OF CHANGEOVER OPERATION INJECTION TO RECIRCULATION 6. Open Containment Sump Isolation Valves (SJ44) N/A 6.a Open RHR Cold Leg Isolation Valves N/A (SJ49) 6 .b Restart RHR pumps 11 and 12 N/A 7. Close SI Pump miniflow isolation valves (SJ67 and SJ68) 7.a Open RHR pump discharge to Charging pumps and SI pumps isolation valves (SJ45) 7.b Open cross-tie between Charging pumps and SI pumps suctio:1 isolation valve (SJ113) Open 7. c Start Charging pumps and SI pumps Close SI Pump miniflow isolation valves (SJ67 and SJ68) Open RHR pump discharge to Charging pumps and SI pumps isolation valves (SJ45) Ensure between pumps and SI pumps suction isolation valve (SJ113) Open Start Charging pumps and SI pumps Note: Switchover for long-term core cooling flow is complete at this time. 8. Isolate RWST from SI, C/SI and RHR pumps 8.a Remove lockout for RWST/SI pump isolation valve SJ30 8.b Close RWST/Charging pump isolation valves (SJl and SJ2) 8. c Close RWST /Common Suction valve (SJ69) 8.d Close RWST/SI pump isolation valve (SJ30) B.e Place RH29 valves in "Manual" and close valves 9. When the RWST low-low level is reached, the 9. a Stop the CS pump 9. b Close the RHR pump to RCS cold isolation valve (SJ49) 9.c Open RHR supply to Containment valve (CS36) SGS-UFSAR 2 of 4 Isolate RWST from SI, C/SI and RHR pumps Remove Lockout for RWST/SI pump isolation valve SJ30 Close RWST/Charging pump isolation valves (SJl and SJ2) N/A Close RWST/SI pump isolation valves (SJ30) Place RH29 valves in "Manual" and close valves When the RWST low-low level is reached, the the CS pump Close the RHR pump to RCS cold isolation valve (SJ49) Open RHR supply to Containment Spray, valve (CS36) Revision 25 October 26, 2010 Note: 1. TABLE 6.3-6 (Cont.) SEQUENCE OF CHANGEOVER OPERATION INJECTION TO RECIRCULATION The Emergency Core Cooling System is now aligned for cold leg recirculation with recirculation containment spray as follows: RHR Purnp 12 (22) is from the recirculation sump the spray header and to the suction of charging pumps SJ45. to valve 2. RHR Pump 11 (21) is delivering from the recirculation sump directly to the cold legs via valve SJ49 and to the suction of the safety ection pumps via valve SJ45. 3. Recircula:ion spray is es:ablished when RHR supply to Containment valve CS36, is open. The sequence of for from the cold leg recirculation phase to the hot leg recirculation phase is as follows: Close the spray header valve (12CS36}. Stop safety injection pump number 11. Close the hot ection pump cross-tie isolation valve (llSJl34). isolation valve (11SJ40). Start ection pump number 11. injection pump number 12. Close the cold isolation valve (1SJ135) and close the ection pump cross-tie isolation valve (12SJ134). Start isolation valve (12SJ40) injection pump number 12. The emergency core cooling pumps are now aligned for the hot leg recirculation as follows: a. The No. 12 RHR pump is delivering water from the containment recirculation sump to the following: (l) to the suction header of the centrifugal charging pumps via l2SJ45. The from the centri pumps is delivered the RCS cold via the BIT flow (2) to the suction header of the cross-over valves. The is delivered to the RCS hot legs. 3 of 4 SGS-OFSAR injection pumps via the SJ113 from the injection pumps Revision 25 October 26, 2010 TABLE 6.3-6 (Cont.) SEQUENCE OF CHANGEOVER OPERATION INJECTION TO RECIRCULATION b. The No. 11 RHR pump is delivering water from the containment recirculation sump to the following: (1) to the suction header of the safety injection pumps via 11SJ45. The discharge from the safety injection pumps is delivered to the RCS hot legs. (2) to the suction header of the centrifugal charging pumps via the SJ113 cross-over valves. The discharge from the centrifugal charging pumps is delivered the RCS cold legs via the BIT flow path. (3) to the RCS cold via the 11SJ49 valve and the RHR cold ection lines. c. Number 11 and 12 safety injection pumps are delivering to the Reactor Coolant System through individual hot leg injection headers. 4 of 4 SGS-UFSAR Revision 25 October 26, 2010 Tl\BLE 6. 3-7 1\ll horsepower valt:es are rated valt:.es. See ES-9<<002 for act:Jal values. Pu:np No::-rnal Condition Ce:1trifugal Safety Injection Res'.dual Heat Head Flow (Ft.) (GPM) 1:00 3000 Note: {l) Design Flow Condition of Pump (2) Runout Condition of Pump (3) X (Service Brake Horsepower Required (HP) 500 Pu"MP Accident Brake Horsepower Head Flow Required (Ft.) (GPM) (HPJ I 61 1300(2) 560 2500(1) 425 360 1500{2) 675 390 ( 4) (5) 4500 400 Factor Motor Horsepower Specified Full Load Horsepower Service Factor 600 400 (5) 1.:s ( 4) D*Jr ing the moaes, flows dependi:;g on system failure assumption. [See {5) D:.:rir.g the recirculat:_oli modes, a maximum 425 HP load can {6) Eorsepowers range fron 625 to approximately 650, depending or. (7) Re:er to NEMA MGl Service Factor Rating (HP) (3) 690 460 460 6.3-13] Nema Temperature Limit for Service Rating (7) (7) (7) SGS-UFSAR Revision 25 October 26, 2010 TABLE 6.3-8 This Table Intentionally Deleted 1 of 1 SGS-UFSAR Revision 16 January 31, 1998
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  • TABLE 6.3*9 SINGLE ACTIVE FAILURE ANALYSIS EMERGENCY CORE COOLING SYSTEM INJECTION PHASE Component A. Accumulator B. Pump: 1) Centrifugal Charging 2) Safety injection 3) Residual heat removal C. Automatically operated valves: 1) Boron injection tank isolation a) Inlet b) Outlet c) Recirculation to boric acid tank valve SGS-UFSAR Malfunction Deliver to broken loop Fails to start Fails to start Fails to start Fails to open Fails to open Fails to close 1 of 3 Comments Total passive system with one accumulator per loop. Evaluation based on three accumulators delivering to the core and one spilling from rupture loop. Two provided. Evaluation based on operation of one Two provided. Evaluation based on operation of one Two provided. Evaluation based on operation of one Two parallel valves; one valve is required to open Two parallel valves; one valve is required to open Two valves in series; only one required to close Revision 6 February 15, 1987
  • Comnonent 2) Centrifugal charging a) Suction line to RWST isolation b) Discharge line to the normal charging path* isolation c) Suction from volume control tank isolation D. Valves operated from control room Centrifugal charging pump recirculation line isolation
  • TABLE 6.3*9 (Cont) Malfunction Fails to open Fails to close Fails to close Fails to close
  • The reactor coolant pump seal water path is left open. A. Valves operated from control room for recirculation: 1. Containment sump recirculation isolation 2. Residual heat removal pumps suction line to RWST isolation 3. Safety injection pumps suction line RWST SGS-UFSAR RECIRCQLAIIQN PHASE Fails to open Fails to close Fails to close 2 of 3 Comments Two parallel valves; one valve is required to open Two valves in series; only one valve required to close Two valves in series; only one valve required to close Two valves in series; only one valve required to close Two lines parallel; only one valve in either line is required to open Two gate valvea in series; operation of only one valve is required Check valve in series with gate valve; operation of only one valve required Revision 7 July 22, 1987 *
  • Co111ponent -Centrifugal charging pumps suction line to RWST isolation 5. Safety injection pUillp suction line discharge of residual heat exchangers 8. Pumps: 1) Component cooling 2) Service water 3) Residual heat removal pump 4) Charging pU111p 5) Safety injection pumps SGS-UFSAR TABLE 6.3*9 (Cnnt) Malfunction Fails to close Fails to open Fails to start Fails to start Fails to start Fails to operate Fails to operate 3 of 3
  • Coll1111ents Check valve in series with two parallel gate valves. Operation of either the check valve or the gate valves required Separate and independent high head injection path via the centrifugal charging puaps taking suction from discharge of alternate residual heat exchanger. A crossover line allows flow from one heat exchanger to reach both safety injection and charging pump if necessary. Three provided. Evaluation based on operation of one. Six provided. Evaluation based on operation of two. Two provided. Evaluation based on operation of one. Same as injection phase Saae as injection phase Revision 1 July 22. 1987 *
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  • Observed Leak Rate 2470 830 415 276 208 TABLE 6.3-10 ACCUMULATOR INLEAKAGE Time Period Between Level Adjustments 1 month 3 months 6 months 9 months 1 year Total Integra5ed Leakage ft *+ 124.5 42.5 20.8 18.8 10.4
  • A total of 163.4 cubic feet, added to the initial amount, can be accepted in each accumulator before an alarm is sounded. + Max. allowed leak rate for manufacturers acceptance test is 20cc/hr (Back leakage through check valves) 1 of 1 SGS-UFSAR Revision 6 February 15, 1987
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  • TABLE 6.3-11 SINGLE PASSIVE FAILURE ANALYSIS -EMERGENCY CORE COOLING SYSTEM RECIRCULATION PHASE Flow Path Low Head Recirculation (Cold Leg) From containment sump to low head injection header via the residual heat removal pumps and the residual heat exchangers High Head Recirculation (Cold Leg) From containment sump to high head injection header via residual heat removal pump, residual heat exchanger to the safety injection pumps and charging pump (using cross-tie) SGS-UFSAR Indication of Loss of Flow Path Reduced flow in the discharge line from one of the residual heat ex-changers (one flow monitor in each discharge line) Reduced flow in the discharge lines from the safety injection pump and centrifugal charging pump (a flow monitor in the discharge lines of each set of pumps) 1 of 2 Alternative Flow Path Via the independent, identical low head flow path utilizing the second residual heat exchanger From containment sump to the high head cold leg injection headers via alternative residual heat removal pump, alternate residual heat exchanger and the centrifugal the charging/safety injection pumps. A cross-tie with two parallel valves is provided. Revision 15 June 12, 1996
  • Flow Path High Head Recirculation (Hot Leg) From containment sump to the high head hot leg injection headers via the residual heat removal pump residual heat exchanger to the safety injection pump. SGS-UFSAR TABLE (Cont) Indication of Loss of Flow Path Reduced flow in the discharge from safety injection pump. 2 of 2
  • Alternative Flow Path From containment sump to the high head hot leg injection points via alternative residual heat removal pump, residual heat exchanger, and safety injection pump crossover line. Revision 15 June 12, 1996 TABLE 6.3-12 RECIRCULATION LOOP LEAKAGE SOURCES Items Residual Heat Removal Pumps (Low Head Safety Injection) Charging Pump Safety Injection Pumps Flanges: a. Pump b. Valves: Bonnet, Body than 2") c. Control Valves d. Other Valves Stem Leakoffs -Seat Leakage Misc. Small Valves SGS-UFSAR Mechanical seal with leakoff Same as residual heat removal pump Same as residual heat removal pump Gasket -adjusted to zero leakage following any test Backseated, double packing with leakoff Flanged body packed stems 1 of 1 Revision 26 May 21, 2012

( ( TABLE 6.3-13 NET POSITIVE SUCTION HEADS FOR POST-ACCIDENT OPERATIONAL PUMPS Flow and Suction Source Pump Safety 86'-3" 675 gpm RWST Injection runout 101'-8" Centrifugal 87'-5" 560 gpm RWST Charging runout 101-8" Residual Heat 46'-10" 1 pump RWST Removal operating 101'-8" 4500 gpm runout flow Residual Heat 46'-10" 2 pumps RWST Removal operating 101'-8" 3000 gpm/pump rated flow Containment 86'-3" 2600 gpm RWST Spray rated flow 101'-8" Component 86'-0" 4600 gpm Head Tank Cooling rated flow 128' Service Water Impeller 14, 400 gpm Plant Intake Suction runout flow Water Level 72'-3" 76' Pump Dis. 94'-0" l of 2 SGS-UFSAR Minimum Available 31.3' 24' 38' 23' 63.3' 19.5' 53.2' 11' 29.9' 10' 40' 14' 32.1' 31.7' ( Maximum Water Temperature lOO"F lOO"F lOO"F lOO"F 100"F 135"F 90"F Revision 19 November 191 2001 I Residual Heat 46' Removal (one pump Operation) Cold Leg Recirculation (Unit 1) -Cold Recirculation (Unit 2) Hot Leg Recirculation (Unit 1) Hot Leg Recirculation (Unit 2) 10" Flow and See Below 5110 gpm (maximum) 4900 gpm (maximum) 4980 gpm (maximum) 4980 gpm (maximum) TABLE 6.3-13 (Cant) Suction Source Containment Sump 80' 10" 80' 10" 81' -8" 81' -8" The available NPSH was calculated for the pumps indicated above 1. All calculations assume an empty refueling water storage tank. 2. No credit is taken for RWST fluid temperature below 100°F. Minimum Available See Below 26. 6' 24.8' 27.8' 25.4' Required See Below 25' 23.1' 24' 24.4' the following conservative Maximum Water Saturation 3. No credit is taken for increased containment pressures following the LOCA. 2 of 2 SGS-UFSAR Revision 26 May 21, 2012

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  • TABLE 6.3-14 MATERIALS EMPLOYED FOR EMERGENCY CORE COOLING SYSTEM COMPONENTS Component Accumulators Boron injection tank Pumps Safety injection Residual heat removal Boron injection tank Recirculation pump Residual heat exchangers Shell Shell end cap Tubes Channel Tube sheet Valves Motor operated valves Containing radioactive fluid Pressure Containing parts 1 of 3 SGS-UFSAR Material Carbon steel, clad with Austenitic stainless steel Carbon steel, clad with Austenitic stainless steel Austenitic stainless steel Austenitic stainless steel Austenitic stainless steel Carbon steel Carbon steel Austenitic stainless steel Austenitic stainless steel Austenitic stainless steel Austenitic stainless steel or equivalent Revision 7 July 22, 1987
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  • TABLE 6.3-14 (Cont) Component Body-to-bonnet Bolting and nuts Seating surfaces Stems Motor-operated valves Containing nonradioactive, Boron -free fluids Body, bonnet and flange Stems Diaphragm valves Accumulator check valves Parts contacting borated water Clapper arm shaft Relief valves Stainless steel bodies Carbon steel bodies All nozzles, discs, spindles and guides SGS-UFSAR 2 of 3 Material Low alloy steel Stellite No. 6 or equivalent Austenitic stainless steel or, 17-4PH stainless Carbon steel Corrosion resistant steel Austenitic stainless steel Austenitic stainless steel 17-4PH stainless Stainless steel Carbon steel Austenitic stainless steel Revision 6 February 15, 1987
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  • Component Bonnets for stainless steel valves without a balancing bellows All other bonnets Piping All piping in contact with borated water SGS-UFSAR TABLE 6.3-14 (Cont} 3 of 3 Material Stainless steel or Plated carbon steel Carbon steel Austenitic stainless steel Revision 6 February 15, 1987
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