ML16256A202
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| Issue date: | 08/25/2016 |
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WSES-FSAR-UNIT-3 3.9B-1 Revision 8 (5/96)
APPENDIX 3.9B DESCRIPTION OF SEISMIC ANALYSIS AND
SUMMARY
OF RESULTS FOR NON-NSSS SUPPLIED ACTIVE PUMPS AND THEIR SUPPORTS 3.9B.1 CHILLED WATER PUMPS Description
The Chilled Water Pumps are Ingersoll-Dresser Model 4x3x13 HOC and the Chilled Water Motors which operate the pumps are Buffalo Forge Company Mode 4013 CRE. The pumps are designed in accordance with ASME Code Section III, Code Class 3, 1986 Edition, No Addenda, Subsections ND and NF. The 1986 code Edition will meet or exceed the requirements of the 1974 Code Edition including the Summer 1975 Addenda. The Motors are designed to ASME Code,Section III, Class 3, 1974 Edition, including Summer 1975 Addenda. The Seismic Analysis Report TR-9233 dated September 15, 1993 and The Structural Integrity Design Report TR-9232 dated September 15, 1993 by Ingersoll Dresser Pumps and Seismic Stress Analysis of Buffalo Forge Pumps Report ME-370 dated January 6, 1977 by Mcdonald Engineering Analysis Co. show that the pumps and the motors are structurally adequate to withstand the specified loads and will perform their intended function during normal steady state loads, OBE loads plus maximum nozzle plus normal loads; and SSE loads plus maximum nozzle plus normal loads.
The following seismic loads were applied to the center of mass of each pump component:
Vertical 0.34g 0.67g
Note:
For latest summary of stresses, deflections and loads, refer to Seismic stress reports filed under SQ-HV-13.
3.9B.2 CONTAINMENT SPRAY PUMPS Description The Containment Spray Pumps are B&W Type 6 x 8 13 SMK pumps. The pumps are designed in accordance with the ASME Code Section III, Class 3, 1971 Edition through Winter 1972 Addenda. The seismic analysis (B&W Seismic Report No. 7131-2.3.8/1-0, dated October 10, 1974) shows that the pumps are structurally adequate to withstand the specified loads and will perform its intended function during normal operating loads plus OBE loads plus nozzle loads and SSE loads plus nozzle loads plus normal operating loads. Since the actual SSE stresses and deflections are lower than OBEs allowable, only SSE case is given.
The following seismic loads were applied to the center of mass of each pump component:
Vertical 0.34g 0.67g
WSES-FSAR-UNIT-3 3.9B-2 APPENDIX 3.9B Summary of Results A summary of the stresses, deflections and loads is given below. The calculated values are compared to the referenced Codes or manufacturers allowables. The allowable stresses for pressure retaining materials are determined from Section III of the ASME Code for the pump design temperature of 250F.
Normal Operating Loads + Nozzle Loads + SSE Loads Material Reference or Mfgrs for Components Model No.
Actual Allowable Allowable Casing Stress, psi (inside surface)
SA351-CF8 5,314 14,200 ASME
- Foundation Bolt Stress, psi (pullout force)
A36 12,642 21,600 AISC
- Attachment Bolt Stress, psi (Axial)
SA193-B7 17,053 25,000 ASME Shaft Deflection, in (at impeller)
.000077.
014 Design Clearance Shaft Coupling Deflection, in Koppers Fast. 000323
.036 Mfgrs Type 2-1/2 BS data Shaft Stress, psi (impeller keyway)
A564-XM25 21,852 31,250 ASME (coupling keyway) 24,462 31,250 ASME Gland Plate Bolt Stress, psi (Axial)
SA193-B7 6,993 25,000 ASME
- Base Plate Pedestal Stress, psiA36 6,833 12,600 AISC Suction Nozzle Stress, psi (inside surface)
SA351-CF8 2,109 14,200 ASME Discharge Nozzle Stress, psi SA351-CF8 4,972 14,200 ASME (outside surface)
Pump Bearing Loads, lbs (inboard)
SKF-NU-312 1,443 12,100 Mfgrs (outboard)
SKF-7311-BG 86.2 23,300 data
WSES-FSAR-UNIT-3 3.9B-3 APPENDIX 3.9B The natural frequency was calculated to be 153.3 Hz.
- Indicates structural support.
Motor Containment spray pump motors are Allis Chalmers 500 PS 6 frame Type FD 300 hp. motors. Allis Chalmers have shown by calculations that the motors will withstand operating loads plus specified seismic conditions.
The following seismic loads were applied to the center of mass of each motor component:
OBE SSE Horizontal 0.5g 1.0g Vertical 0.34g 0.67g Summary of Results A summary of actual stresses loads and deflections is given below. The actual values are compared to the referenced Codes or manufacturers allowables.
Normal Operating Loads + Nozzle Loads + SSE Loads Material Reference or Mfgrs for Components Model No.
Actual Allowable Allowable
- Motor hold down bolts stress-
- Shear, psi SA307 3,919 10,000 AISC
- Tensile, psi 6,105 20,000 AISC Rotor deflection at Bearings, in.
0.00053 0.0027 Design clearance 3.9B.3 DIESEL OIL TRANSFER PUMP Description The Diesel Oil Transfer Pumps are a Goulds Pump, Inc. Model 3736 Size 1 x 1-1/2-8. The pump designed in accordance with ASME Code Section III, Class 3, 1971 Edition through Winter 1972 Addenda.
The analysis (Goulds Pump Seismic Analysis Report No. ME-324 Order No. N232806 by McDonald Engineering Company, dated April 16, 1976) shows that the pump and motor set are structurally adequate to withstand the specified loads and will perform their intended function during normal plus OBE loads plus maximum nozzle loads and normal plus SSE seismic plus maximum nozzle loads. The pump casing stresses are not calculated. The casing is verified for normal operation by service experience.
- Indicates structural support.
WSES-FSAR-UNIT-3 3.9B-4 APPENDIX 3.9B The following seismic loads were applied to the center of mass of each pump component:
OBE SSE Horizontal 1.0g 2.0g Vertical l.0g 2.0g Summary of Results A summary of the actual stresses, loads and deflections is given below. The actual values are compared to the referenced Codes or manufacturers allowables for each load case. The allowable stresses for pressure retaining materials are determined from Section III of the ASME Code for the pump design temperatures of 125° F.
OBE Loads + Normal Loads + Maximum Nozzle Loads Material Reference or Mfgrs for Components Model No.
Actual Allowable Allowable
- Motor Hold Down Bolt Stress
- Shear, psi A307 1,183 10,000 AISC
- Tensile, psi 2,276 20,000 AISC
- Pump Hold Down Bolt Stress
- Shear, psi A307 2,969 10,000 AISC
- Tensile, psi 5,572 20,000 AISC
- Anchor Bolt Stress
- Shear, psi A307 4,734 10,000 AISC
- Tensile, psi 5,199 20,000 AISC (pullout force)
Shaft Stress, psi A276 5,256 17,500
- Pump Frame Bolt Stress
- Shear, psi A307 5,662 10,000 AISC
- Tensile, psi 137 18,940 AISC Stuffing Box Cover Flange Stress, psi SA216 WCB 4,981 26,250 ASME Stuffing Box Bolt Stress, psi SA193-B8 6,148 14,575 ASME
WSES-FSAR-UNIT-3 3.9B-5 APPENDIX 3.9B OBE Loads + Normal Loads + Maximum Nozzle Loads (Contd)
Material Reference or Mfgrs for Components Model No.
Actual Allowable Allowable Maximum Nozzle Stress
- Suction, psi SA216 WCB 3,906 17,500 ASME
- Discharge, psi 3,480 17,500 ASME Discharge Flange Stress, psi SA216 WCB 10,903 26,250 ASME Suction Flange Stress, psi SA216 WCB 11,963 26,250 ASME
.00067
.014 Design clearance Motor Bearing Loads,
- Inboard, lbs MRC-206-S 45 3,573 Mfgrs
- Outboard, lbs MRC-207-S 45 4,443 data Pump Bearing Loads
- Inboard, lbs MRC-310-S 317 10,688 Mfgrs
- Outboard, lbs MRC-5310-G 1,624 17,865 data Flexible Coupling Koppers Fast
.0016
.017 Mfgrs Misalignment, Radians Type B-1 1/2B data Impeller Key Stress
- Shear, psi A276 549 9,000 Impeller To Casing Clearance
- Deflection, in
.003
.008 Design clearance SSE Loads + Normal Loads + Maximum Nozzle Loads Material Reference or Mfgrs or Components Model No.
Actual Allowable Allowable
- Motor Hold Down Bolt Stress
- Shear, psi A307 2,598 15,000 AISC
- Tensile, psi 5,252 30,000 AISC
WSES-FSAR-UNIT-3 3.9B-6 APPENDIX 3.9B SSE Loads + Normal Loads + Maximum Nozzle Loads (Contd)
Material Reference or Mfgrs for Components Model No.
Actual Allowable Allowable
- Pump Hold Down Bolts Stress
- Shear, psi A307 4,449 15,000 AISC
- Tensile, psi 7,501 30,000 AISC
- Anchor Bolt Stress
- Shear, psi A307 6,791 15,000 AISC
- Tensile, psi 8,277 25,702 AISC (pullout force)
Shaft Stress, psi A276 6,874 26,250
- Pump Frame Bolt Stress
- Shear, psi A307 7,447 15,000 AISC
- Tensile, psi 178 24,127 AISC Stuffing Box Cover Flange Stress, psi SA216 WCB 5,349 39,375 ASME Stuffing Box Bolt Stress, psi SA193-B8 6,645 21,862 ASME Maximum Nozzle Stress
- Suction, psi SA216 WCB 3,906 26,250 ASME
- Discharge, psi SA216 WCB 3,480 26,250 ASME Discharge Flange Stress, psi SA216 WCB 10,903 39,375 ASME Suction Flange Stress, psi SA216 WCB 11,963 39,375 ASME
.00108
.014 Design clearance Motor Bearing Loads
- Inboard, lbs MCR-206-S 72 3,573 Mfgrs
- Outboard, lbs MCR-207-S 72 4,443 data Pump Bearing Loads
- Inboard, lbs MCR-310-S 397 10,688 Mfgrs
- Outboard, lbs MCR-531OG 2,077 17,865 data
WSES-FSAR-UNIT-3 3.9B-7 APPENDIX 3.9B SSE Loads + Normal Loads + Maximum Nozzle Loads (Contd)
Material Reference or Mfgrs for Components Model No.
Actual Allowable Allowable Flexible Coupling Koppers Fast
.0022
.017 Mfgrs Misalignment, Radians Type B-1 1/2B data Impeller Key Stress
- Shear, psi A276 549 13,500 Impeller To Casing Clearance
- Deflection, in
.004
.008 Design clearance A computer analysis for the frequencies was performed using computer code ICES-STRUDL. The lowest frequency is determined to be 82 Hz-3.9B.4 COMPONENT COOLING WATER PUMPS Description The Component Cooling Water Pumps are Babcock and Wilcox Canada Model 12 x 14 x 16 DE pumps.
The pumps are designed in accordance with the ASME Code Section III, Class 3, 1971 Edition through Winter 1973 Addenda. Component cooling water pump motors are Allis Chalmers type GS, 300 hp motors. The analysis (B&W Seismic Report No. 7272-11-2.3.8/1-0 Rev 0 dated November 28, 1977) shows that the pumps and motors are structurally adequate to withstand the specified loads and will perform their intended function during normal operating loads plus nozzle loads plus OBE loads and normal operating loads plus nozzle loads plus SSE loads. Since the actual SSE stresses and deflections are lower than the OBEs allowable, only SSE case is given.
The following seismic loads were applied to the center of mass of each pump component:
OBE SSE Horizontal 0.50g 1.00g Vertical 0.34g 0.67g
- Indicates structural support.
- Conservative estimate based on yield stress of ASTM A276 material.
WSES-FSAR-UNIT-3 3.9B-8 APPENDIX 3.9B Summary of Results A summary of the operating plus SSE actual and allowable stresses is given below. The actual values are compared to the referenced Codes or manufacturers allowables. The allowable stresses for pressure retaining materials are determined from Section III of the ASME Code for the pump design temperature of 175°F. The allowables for the attachment bolting, foundation bolting and support steel are taken as 40%,
60%, 60% respectively of the yield strength of their material Normal Operating Loads + Nozzle Loads + SSE Loads Material Reference or Mfgrs for Components Model No.
Actual Allowable Allowable PUMP Casing, inside surface, psi SA351-CF8 3,213 12,320 ASME Casing, outside surface, psi SA351-CF8 2,963 12,320 ASME
- Attachment Bolts, psi SA193-B7 12,197 42,000 ASME
- Foundation Bolts
- Shear, psi A36 5,239 21,600 AISC
- Axial, psi 5,189 21,000 AISC (pullout force)
- Pedestal Attachment Bolts, psi SA193-B7 8,770 42,000 ASME
- Pedestal (axial stress), psi A36 1,481 21,600 AISC Pedestal Welds (base), psi A36 3,471 18,000 Shaft Stress, psi A237 CLA 6,413 20,000 ASTM 400 BAR Discharge Nozzle Stress, psi (outside surface)
SA351-CF8 2,867 12,320 ASME Suction Nozzle Stress, psi (outside surface)
SA351-CF8 1,352 12,320 ASME Pump Bearing Loads
- Inboard, lb Kingsbury 839 1,010 Mfgrs
- C-5 data
- Outboard, lb Kingsbury 404 1,010
- CH-5
WSES-FSAR-UNIT-3 3.9B-9 APPENDIX 3.9B Normal Operating Loads + Nozzle Loads + SSE Loads (Contd)
Material Reference or Mfgrs for Components Model No.
Actual Allowable Allowable Pump Maximum Coupling Misalignment, in.
Koppers 0.0021
.036 Mfgrs Fast Type data B-2-1/2B Impeller To Casing Clearance
- Deflection, in.
0.00470 0.00531 Design clearance The lowest natural frequency was determined to be 321 Hz.
Motor
- Attachment Bolts 193-B7 2,788 42,000 ASME
- Foundation Bolts,
- Shear, psi A36 2,381 21,600 AISC
- Axial, psi 4,194 21,600 AISC (pullout force)
- Pedestal (axial stress), psi A36 533.25 21,600 AISC Pedestal Welds (base), psi A36 2,130.3 18,000 Motor Hold Down Bolt
- Shear, psi A307 2,049 10,000 AISC
- Tensile, psi 3,299 20,000 AISC Rotor Deflection at Bearings, in.
0.0074 0,042 Mfgrs data The lowest natural frequency was determined to be 239 Hz.
3.9B.5 AUXILIARY COMPONENT COOLING WATER PUMPS Description The Auxiliary Component Cooling Water Pumps are Babcock and Wilcox Canada Model 12 x 14 x 16 DE pumps. The pumps are designed in accordance with the
- Indicates structural support.
- Conservative estimate.
WSES-FSAR-UNIT-3 3.9B-10 APPENDIX 3.9B ASME Code Section III, Class 3, 1971 Edition through Winter 1973 Addenda. The Auxiliary Component Cooling Water Pump Motors are Allis Chalmers type GS, 300 hp motors. The analysis (B&W Seismic Report No. 7272-11-2.3.8/1-0 Rev 0 dated November 28, 1977) shows that the pumps and motors are structurally adequate to withstand the specified loads and will perform their intended function during normal operating loads plus nozzle loads plus OBE seismic and normal operating loads plus nozzle loads plus SSE loads. Since the actual SSE stresses and deflections are lower than OBEs allowable, only the SSE case is given.
The following seismic loads were applied to the center of mass of each pump component:
OBE SSE Horizontal 0.50g 1.00g Vertical 0.34g 0.67g Summary of Results A summary of the operating plus SSE actual and allowable stresses is given below. The actual values are compared to the referenced Codes or manufacturers allowables. The allowable stresses for pressure retaining materials are determined from Section III of the ASME Code at the pump design temperature of 120F. The allowables for the attachment bolting, foundation bolting and support steel are taken as 40%,
60%, 60%, respectively of the yield strength of their materials.
Normal Operating Loads + Nozzle Loads + SSE Loads Material Reference or Mfgrs for Components Model No.
Actual Allowable Allowable Casing, inside surface, psi SA351-CF8 3,213 12,320 ASME Casing, outside surface, psi SA351-CF8 2,963 12,320 ASME
- Attachment Bolts, psi SA193-B7 12,197 42,000 ASME
- Foundation Bolts
- Shear, psi A36 7,582 21,600 AISC
- Axial, psi 6,230 21,000 AISC (pullout force)
- Pedestal Attachment Bolts, psi SA193-B7 8,770 42,000 ASME
- Pedestal (axial stress), psi A36 1,481 21,600 AISC
WSES-FSAR-UNIT-3 3.9B-11 APPENDIX 3.9B Normal Operating Loads + Nozzle Loads + SSE Loads (Contd)
Material Reference or Mfgrs for Components Model No.
Actual Allowable Allowable Pedestal Welds (base), psi A36 3,471 18,000 Shaft Stress, psi A237 CLA 6,413 20,000 ASTM 400 BAR Pump Bearing Loads
- Inboard, lb Kingsbury 839 1,010 Mfgrs
- C-5 data
- Outboard, lb Kingsbury 404 1,010
- CH-5 Maximum Coupling Misalignment, in.
Koppers 0.0021 0,036 Mfgrs Fast Type data B-2-1/2B Discharge nozzle stress, psi (outside surface)
SA351-CF8 2,867 12,320 ASME Suction Nozzle Stress, psi (outside surface)
SA351-CF8 1,352 12,320 ASME Impeller To Casing Clearance
- Deflection, in.
0.00470 0.00531 Design clearance The lowest natural frequency was determined to be 321 Hz.
Motor
- Attachment Bolts SA193-B7 2,788 42,000 ASME
- Foundation Bolts,
- Shear, psi A36 2,528 21,600 AISC
- Axial, psi 4,194 21,600 AISC (pullout force)
- Pedestal (axial stress), psi A36 533.25 21,600 AISC Pedestal Welds (base), psi A36 2,130.3 18,000 Motor Hold Down Bolts
- Shear, psi A307 2,049 10,000 AISC
- Tensile, psi 3,299 20,000 AISC
WSES-FSAR-UNIT-3 3.9B-12 Revision 11-B (06/02)
APPENDIX 3.9B Normal Operating Loads + Nozzle Loads + SSE Loads (Cont'd)
Material Reference or Mfgr's for Components Model No.
Actual Allowable Allowable Rotor Deflection at Bearings, in.
0.0074 0.042 Mfgr's data The lowest natural frequency was determined to be 239 Hz.
3.9B.6 EMERGENCY FEEDWATER PUMPS Description
The Emergency Feedwater Pumps are Bingham-Willamette Ltd Models 3 x 4 x 9E MSD 7 stage and 3 x 6 x 9C MSD 6 stage pumps. The pumps are designed in accordance with the ASME Code Section III, Class 3, 1971 Edition through 1972 Winter Addenda, except for the pump case material, which met the 1974 Edition, Summer 1975 Addenda. The drivers for the above models are General Electric motor 5K811045C25 and Terry Turbine Company turbine model GS-2, respectively. The analyses (GE Seismic Analysis Report No. 34A842770 for motors Rev 0, dated November 3, 1977, Bingham Willamette Report No. 230223 for Motor Driven Pumps Rev 0, dated March 12, 1970, Bingham Willamette Report No.
230225 for Turbine Driven Pump Rev 2 dated March 3, 1977, and Seismic analysis by Keith Feibusch Engineering Company for the Turbine dated February 1973) shows that the pumps, motors and turbine are structurally adequate to withstand the specified seismic conditions without loss of function.
The following seismic loads specified were applied to the center of mass of each pump component:
OBE SSE Horizontal 0.50g 1.00g Vertical 0.34g 0.67g Natural frequencies (Hz) for the motor driven pumps are as follows:
Item X-direction Y-direction Z-direction Pump 82.2 299.0 44.1 Driver 146.0 277.0 77.3
- Indicates structural support.
- Conservative estimate.
WSES-FSAR-UNIT-3 3.9B-13 APPENDIX 3.9B Natural frequencies (Hz) for the turbine driven pump are as follows:
Item X-direction Y-direction Z-direction Pump 84.76 313.91 49.68 Driver 35.40 216.74 51.51 The directions for the above are; X-direction is horizontal, parallel to shaft, Y-direction is vertical, perpendicular to shaft, Z-direction is horizontal, perpendicular to shaft.
Summary of Results A summary of the stresses caused by SSE loads is given below. The actual values are given and compared to the referenced Codes or manufacturers allowables. The allowable stresses for pressure retaining materials are determined from Section III of the ASME Code at the pump design temperature of 115°F.
Normal Operating Loads + Nozzle Loads + SSE Loads Material Reference or Mfgrs for Components Model No.
Actual Allowable Allowable Motor Drive Pump
- Pump Hold-Down Bolts-Tension,psi A325 21,149 40,000 AISC
- Pump Foot Taper Pins
- Shear, psi AISI-1112 8,808 32,000
- Motor Foot Taper Pins
- Shear, psi AISI-1112 24,772 32,000
- Base Hold-Down Bolts
- Tension, psi A36 10,435 21,600 AISC
- Shear, psi A36 9,258 21,600 AISC (pullout force)
Motor
- Motor Hold Down Bolt Load
- Tensile, psi A325 8,108 40,000 AISC
- Shear, psi 9,105 15,000 AISC
WSES-FSAR-UNIT-3 3.9B-14 Revision 10 (10/99)
APPENDIX 3.9B Normal Operating Loads + Nozzle Loads + SSE Loads (Contd)
Material Reference or Mfgrs for Components Model No.
Actual Allowable Allowable Motor (Contd)
Rotor To Stator Clearance, in.
.095
.100 Design clearance Shaft Stress, psi A276-410HT 7,587 20,000 Shaft Key Stresses, psi AISI-1018 3,618 10,000 Conduit Box Bolting,
- Tensile, psi A490 528 54,000 AISC
- Shear, psi 168 27,000 AISC Bearing Loads
- Radial, psi Sleeve Type 196 1,000 Mfgrs data Top Cover Stress, psi A7 steel 710 20,000 Top Cover Bolting
- Tensile, psi A490 392 54,000 AISC End Shield Bolting
- Tensile, psi A490 763 54,000 AISC Motor Frame Stress, psi
- (local)
Cast Iron 5,288 10,000 Mfgrs data Turbine Driven Pump
- Pump Hold-Down Bolts
- Tension, psi A325 31,094 40,000 AISC
or equal
- Pump Foot Taper Pins
- Shear, psi AISI-1112 11,581 32,000
- Base Hold-Down Bolts
- Tension, psi A36 11,283 21,600 AISC
- Shear, psi A36 11,783 21,600 AISC
WSES-FSAR-UNIT-3 3.9B-15 APPENDIX 3.9B Turbine****
Margin of Safety*****
- Hold-Down Bolt 3.3
- Taper Pin 0.3
- Sliding Foot Connection 0.5
- Turbine Pedestal (compressive stress) 11.0
- Turbine Pedestal (weld stress) 1.0 Baseplate Connection to Concrete (pullout force) 0.2 Baseplate Connection to Concrete (anchor bolt, shear) 0.6
WSES-FSAR-UNIT-3 3.9B-16 Revision 309 (06/16)
APPENDIX 3.9B Actual Piping(1)
Maximum Loads Nozzle Loads Calculated By Pump Mfg'r Maximum Nozzle Loads Force Moment Force Moment Axis (lb)
(ft-lb)
(lb) ft-lb)
(LBDCR 15-006, R309)
Motor Driven Pumps (material: SA-487 CA6NM ref for max loads: Seismic Analysis Report No. 230225)
Suction Discharge Turbine Driven Pump (material: SA-487 CA6NM ref for max loads: Seismic Analysis Report No. 230223)
Suction Discharge (1) The actual piping loads are for information only and should not be used as a reference for the current loadings on the pumps. See the current pipe stress analysis calculations for the current loadings and qualifications.
(LBDCR 15-006, R309)
Pump A Pump B Pump A Pump B X
108 79 301 134 1,100 1,250 Y
219 139 294 56 1,200 1,250 Z
92 54 256 124 1,100 1,350 X
346 341 986 1,103 800 700 Y
561 499 687 933 850 700 Z
165 271 601 409 800 750 X
142 344 1,600 2,700 Y
564 440 1,700 2,700 Z
152 285 1,600 2,900 X
209 594 800 700 Y
666 275 850 700 Z
727 210 800 750
WSES-FSAR-UNIT-3 3.9B-17 APPENDIX 3.9B A computer analysis for the frequencies and stresses was performed using the SANDE Computer Program.
Indicates structural support.
Conservative estimate based on yield stress of ASTM 276, A-7 materials.
Machinery Handbook 21st Edition.
The seismic calculation for the emergency feedwater pump turbine uses the criteria of horizontal and vertical seismic forces of 3.0g and 1.0g, respectively.
Margin of Safety =
allowable stress (1) calculated stress Small clearances between rotating and stationary parts in the pump will not present any operating difficulties during an earthquake. Small clearances exist at wear rings and bushings. These components behave as hydrodynamic bearings and are self-centering during operation - they support the rotating element against any seismic inertia loads. In addition experience with pumps having very flexible rotating elements shows that these pumps operate satisfactorily even though contact would occur at close clearances due to the weight and flexibility of the rotating element when the pumps are idle. Therefore, these small clearances are not controlling factors during an earthquake.
The pump bearings are considered adequate because the increase in bearing load due to the seismic inertia load of the rotating element is very small compared to the hydraulic loads already existing in a pump.
3.9B.7 COMPONENT COOLING WATER MAKE-UP PUMPS Description The Component Cooling Water Make-Up Pumps are Babcock and Wilcox Canada Model 3 x 4 x 14 DL Pumps. The pumps are designed in accordance with the ASME Code Section III, Class 3, 1971 Edition through Winter 1973 Addenda. The motors are Allis Chalmers Type RG 40 hp motors. The analysis (B&W Seismic Analysis Report No 7272-12-2.3.8/1-0 Rev A dated 3-29-78) shows that the pumps and motors are structurally adequate to withstand the specified loads and will perform its intended function during normal operating loads plus nozzle loads plus OBE loads and normal operating loads plus SSE loads. Since the actual SSE stresses are lower than the OBEs allowable, only the SSE case is given.
WSES-FSAR-UNIT-3 3.9B-18 APPENDIX 3.9B The following seismic loads were applied to the center of mass of each pump component:
OBE SSE Horizontal 0.50g 1.00g Vertical 0.34g 0.67g Summary of Results A summary of the operating plus SSE actual and allowable stresses is given below:
The actual values are compared to the referenced Codes or manufacturers allowables.
The allowable stresses for pressure retaining materials are determined from Section III of the ASME Code at the pump design temperature of 175°F. The allowables for the attachment bolting, foundation bolting and support steel are taken as 40%, 60%, 60% respectively of the yield strength of their materials.
Normal Operating Loads + Nozzle Loads + SSE Loads Material Reference or Mfgrs for Components Model No.
Actual Allowable Allowable Pump Casing, inside surface, psi SA351-CF8 1,318 12,320 ASME Casing, outside surface, psi SA351-CF8 1,168 12,320 ASME
- Attachment Bolts, psi SA193-B7 5,472 42,000 ASME
- Foundation Bolts A36 3,648 21,600 AISC
- Shear, psi 2,335 21,600 AISC
- Axial, psi (pullout force)
- Pedestal Attachment Bolts, psi SA193-B7 8,967 42,000 ASME
- Pedestal (axial stress), psi A36 439 21,600 AISC Pedestal Welds (base), psi A36 782 18,000 Shaft Stress, psi A276-410 6,711 25,000
WSES-FSAR-UNIT-3 3.9B-19 APPENDIX 3.9B Normal Operating Loads + Nozzle Loads + SSE Loads (Contd)
Material Reference or Mfgrs for Components Model No.
Actual Allowable Allowable Pump Bearing Loads SKF-6307 114 5,750 Mfgrs
- Inboard, lb SKF-3306 56 7800 data
- Outboard, lb A/C3 Maximum Coupling Misalignment, Kopper's 0.00134 0.029 Mfgrs in.
Fast data Type B-2B Impeller Clearance 0.00227 0.00327 Mfgrs Deflection; in.
data Discharge Nozzle Stress SA 351-CF8 305 12.320 ASME Outside Surface, psi Suction Nozzle Stress,
SA 351-CF8 295 12,320 ASME Outside Surface, psi The lowest natural frequency was calculated to be 361 Hz.
Motor
- Attachment Bolts, psi SA193-B7 966 42,000 ASME
- Pedestal - Axial Stress, psi A36 142.74 21,600 AISC Pedestal Welds (base>, psi A36 463 18,000 Motor Hold Down Bolts A307 633 10,000 AISC
- Shear, psi 1,031 20,000 AISC Tensile, psi Rotor Deflection at Bearings, in 0.025 0.0005 Mfgrs data The lowest natural frequency was calculated to be 477 Hz
- Indicates structural support.
- Conservative estimate.
- Conservative estimate based on yield stress of ASTM A276 material.
WSES-FSAR-UNIT-3 3.9B-20 APPENDIX 3.9B 3.9B.8 DIESEL ENGINE DRIVEN LUBE OIL PUMP Description The Lube Oil Pump is Roper Model 20040. The pump is flanged mounted to the Cooper Bessemer Engine with the inlet and discharge parts oriented horizontally. The pump is driven directly by the diesel engine crankshaft. The analysis (Seismic Analysis Report No. HC5-922-2 by Hissong Consultants dated September 22, 1975) shows that the pump is structurally -adequate to withstand the specified operating and seismic condition. The operability of this lube oil pump is contingent on the operation of the diesel generator. The operability of the pump is assured by the diesel generator qualification program described in Subsection 8.3.1.1.2.13.k.
3.9B.9 DIESEL ENGINE DRIVEN JACKET WATER PUMP Description The Jacket Water Pump is Allis Chalmers Model C16. The pump is flange mounted to Cooper Bessemer equipment with the impeller mounted on shaft. The pump is driven by the diesel engine crankshaft. The analysis (Seismic Analysis Report No. HC6-106 by Hissong Consultants dated January 6, 1976) shows that the pump is structurally adequate to withstand the specified operating and seismic condition. The operability of this pump is contingent on the operation of the diesel generator. The operability of the pump is assured by the diesel generator qualification program described in Subsection 8.3.1.1.2.13.k.
WSES-FSAR-UNIT-3 3.9B-21 Revision 9 (12/97)
This page is a duplication of page 3.9B-19.
WSES-FSAR-UNIT-3 3.9B-22 Revision 9 (12/97)
This page is a duplication of page 3.9B-20.