ML18010A855
| ML18010A855 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 10/12/1992 |
| From: | CAROLINA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML18010A852 | List: |
| References | |
| CS-0021, CS-0021-R03, CS-21, CS-21-R3, GL-89-10, NUDOCS 9210280222 | |
| Download: ML18010A855 (43) | |
Text
Carolina Power&Light Company~PO Box 1551 Raleigh, North Carolina 27602 Shearon Harris Nuclear Power Plant Unit 1 Mechanical Analysis and Calculations for Charging Pump A to Refueling Water Storage Tank Isolation Valve NII IIKBIIIt I lliIIL(Generic Letter 89-10 Applicable~Yes No Valve Classification:
Nuclear-Safety Related Calculation Number*CS-0021 Revision Prepared Sy/Date Verified Sy/Date Signatures on file Signatures on file Project Engineer/Date Prin.or Res.Eng./DateReason See Section 1.2 of His Calculation.
Reason Incorporation of Electrical Calculation E5-001, Revision 1 Signatures on file Reason Incorporation of PCR.6547, Revision 1 n.9210280222 92l0i2 PDR ADOCK 05000400 P PDR Prepared By<Cheeked Byc Calo.ZDt*CS-0021 Revisions 3~yg 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 st f ective~Rev~so 3 2 3 2 2 2 2 2 2 2 2 2 2 2 3 2 2 2 2 Attachment A Attachment B Attachment C Attachment D Attachment E Attachment F Attachment G Telecon w/Velan Inc.Fax from of Velan Flow Isolation/Seating Thrust Average Closing Packing Load Final Thrust Due to Inertia Thrust at Torque Switch Trip Design Verification Record 2 2 2 2 2 2 3 1CS-746 Pago No: 1
\7 Prepared By: Checked By: Calc.IDt+CS-0021 Revision: 2 TABLE OF Section scr ti 1.0 2.0 3.0 4.0 F 1 3'3.3 4'4.2 4.3 4'4.5 Purpose References Bases and Assumptions Analyzed Configuration Valve Function and Control Configuration Assumptions Calculations Generic Letter 89-10 Applicability Design Differential Pressure Evaluation 7 Valve Thrust Recommended Minimum Torque Switch Setting 11 Motor Capacity Limits 5~0 4.6 4.7 4.8 4.9 Allowable Operating Ranges Stall Evaluation Required Limit Switch Settings Nominal Operating Time Results, Conclusions and Recommendations 12 14 15 17 19Attachment A Attachment B Attachment C Attachment D Attachment E Attachment F Attachment G Telecon w/Velan Inc.Fax from of Velan Flow Isolation/Seating Thrust Average Closing Packing Load Final Thrust Due to Inertia Thrust at Torque Switch Trip Design Verification Record 1 page 3 pages 1 page 1 page 1 page 1 page 2 pages 1CS-746 Page No!2
Prepared By-Checkod By!Calc.ZD-*CS-0021 Revisions 3 1~0~UR Qgg 1.1 Pu ose oi th s Re ort The purpose of this report is to document various parameters pertaining to the subject motor-operated valve.This report: reviews the design differential pressure against which the valve may have to operate calculates the MOV thrust/torque requirements evaluates the limitations of the actuator, motor, and valve (evaluation includes effects of a motor stall)evaluates the actuator limit switch settings 1.2 Reason for ev sion PCR-6547, Revision 1, removed the Alternate Mini-flow Relief Valves and installed restricting orifices upstream of motor-operated'valves 1CS-746 and 1CS-752.The control logic for these motor-operated valve will be modified such that they will automatically open upon high RCS pressure (2300 psig)coincident with an"S" signal and will automatically close at the reset pressure of 1750 psig.This revision is necessary to incorporate additional changes in valve control logic.2'E NCES 2'2'2.3 NED Design Guide DG-I.11,"Q-List Motor-Operated Valve Mechanical Evaluations", Revision 4.NED Scope Document Q9-M0-002, Revision 2."Analysis of Overload Protection and Motor Torque Output for AC Motor Operated Valves" E5-001, Sub-Calculation CPL-MOV-051, Revision 2.2.4 Control Wiring Diagram CAR 2166-B-401 Sheet 317, Revision 5.2'2.6 2 7 Corrective Maintenance Procedure CM-I0002, Revision 4.Valve Vendor Print-1364-53850, Revision 1.Technical Manual ISP, Volume 2, Revision 18.1CS 746 Page No: 3 Prepared By-'heakod By: Calo.ID:*CS-0021 Revision!2 2.0 REFE N ES Continued 2.8 2'2.10 2.11 2'2 2.13 2.14 2~152.16 2.17 2.18 Chemical&Volume Control Piping, Reactor Auxiliary Building, Plans, CAR-2165-G-140, Revision 23.Chemical and Volume Control System Description, SD-107, Revision 2.Crane Technical Paper No.410, Nineteenth Printing-1980 Technical Memorandum"Performance and Properties of Limitorque Components", Number TM-G-XXXX-001, Rev.0.Piping Line List, CAR-1364-B-0070,'evision 44.Westinghouse E-Spec.No.G-678852, Revision 2.Design Basis Document DBD-104, Revision 0.l RAB Tank Area Sections, CAR-2165-G-251, Revision 18.Piping Isometric 1-CS-651, Revision 5.Limitorque Order Sheet 3D0652-D PCR-6547, Revision 1,"Alternate Mini-Flow Re-Design" 3'BASES SUM ZONS 3.1 al sed o fi ratio The configuration assumed when performing this analysis is as follows: Limitorcyxe Order Number: Actuator Size&Type: Overall Unit Ratio: Handwheel Ratio: Handwheel Efficiency:
Worm Set/Gear Ratio: Worm Set Efficiency:
Applications Factor: Installed Spring Pack: Pullout Efficiency:
Run Efficiency:
Stall Efficiency:
3D0652-D SMB-00 82.0:1 4~3P 1'54 45:p 364 0.9 60-600-0047-1 404 504 504 1CS-746 Page No!4 Prepared By!Checked By<Calc.ID!*CS-0021 Revt.sion!
2 3~1 a e o ration Conti ue Foot-Pounds:
RPM: Volts: 10 1700 460 AC Manufacturer:
Valve Size&Type: Valve Pressure Class: Mean Contact, Seat Diameter: Stem Configuration:
Stroke Length: Velan 2-inch, globe 1500 psig 1.875 1.125D-1/3F-2/3L 1.5 inches 1-Walkdown Data"Motor-Operated-Valve Data Form" 2-NED Design Guide I.11 (Reference 2.1)3-Limitorque Order Sheet (Reference 2.17)4-Emdrac Print (Reference 2.7)3~1 1 ss-reference Number s~~The Ebasco (construction identific ation)tag number for this valve is 2CS-V757SA-1.
The Westinghouse Identification Number and Location are 2TM78FNM and 8489A respectively.
3'Co ol 3~2~1 V ve t o The alternate mini-flow line is for dead head protection of the CSIP's during safety injection (specifically the injection phase of the SIS operation).
Valves 1CS-746 and 1CS-752 are designed to open automatically upon high RCS pressure (2300 psig)coincident with an"S" signal and will automatically close at the reset pressure of 1750 psig (Reference 2.18).These valves are located in parallel on the two alternate mini-flow lines which relieve to the RWST.1CS 746 Page No: 5 Prepared Byt Checked Byt Calo.ZDt*CS-0021 Revisiont 2 3~2~2 t o o fi ration'he following statements are derived from references 2.4, 2.5 and 2.18'his MOV automatically opens upon high RCS pressure (2300 psig)coincident with an"S" signal and will close at the reset pressure of 1750 psig.Under normal conditions this MOV can only open if valves 1RH-25, 1RH-63 and either 1CS-165, 1CS-166 or 1CS-745 are closed.This MOV trips out via the torque switch in the closing direction and is electrically de-energized by the open limit switch, in the opening direction.
The open torque switch and thermal overloads are automatically bypassed on loss of offsite power'or a safety in)ection actuation.
1)The minimum torque delivered by the actuator motor is assumed to be 5.9 ft-lbs per reference 2.3.2)The maximum torque delivered by the actuator motor is assumed to be 11.3 ft-lbs per reference 2.3.3)The Stem Factor for a coefficient of friction of 0.15 is 0.0156 and a coefficient of friction of 0.2 is 0.0179 (reference 2.1).4)The flow limiting component in the alternate mini-flow line is the fixed orifice.The flow capacity of this orifice is 60 gpm nominally (reference 2.18).5)The maximum operating temperature and desi.gn temperature for line number 2CS2-785SN-1 is 130 F and 200 F respectively (reference 2.12).6)Piping frictional losses are ignored when calculating differential pressure at the valve.7)The 0.433 psig/ft conversion factor used in this calculation is based on water at 60 F (reference 2.10).1CS-746 Page Not 6 Prepared By: Checked By: Calc.'D:*CS-0021 Revision: 2 0 C ONS 4~1 Valve 1CS-746 is located in the CSIP alternate mini-flow line and is designed to open automatically upon high RCS pressure coincident with an"S" signal and automatically close at the reset pressure (Reference 2.18).The alternate mini-flow line is for dead head protection of the CSXP's during safety injection (specifically the injection phase of the SZS operation).
Based on the preceding paragraph and the guidance provided in reference 2.2, the requirements of Generic Letter 89-10 are a licable to this MOV.4'e en ia Pressu e 2~1 e Press Upstream pressure will be assumed to be equal to the shutoff head of the CSIPs plus the static head of the RWST at its maximum level.S s a 6200 feet (ref.2.7)*0.433 psig/foot=2,684 psig Sta RWST Maximum Level=301 ft.(ref.2.15)Valve Elevation.
=249 ft.(ref.2.16)(301 ft.-249 ft)*0.433 psig/ft 3 s1 Upstieam Pressure is equal to: 2,707 psig 4.2.2 i ere ti essure The maximum differential pressure (dP)occurs when maximizing the upstream and minimizing the downstream pressure.To maximize dP, it is assumed that the downstream pressure is 0 psig.Therefore, the maximum differential pressure is 2,707 psid.1CS-746 Page Ho: 7
Prepared By!Checked Byt Calo~ZDt*CB-0021 Revt.siont 2 i.2~2 t ed Note: Th'e subject MOV is a pressure under the seat globe valve.The most conservative opening differential pressure assumption is to assume 0 psid since any line pressure would assist the valve in opening.For this reason opening upstream pressure and differential pressure are not calculated.
3 V v 3 1 V ve e t The maximum thrust requirements for the operation of this pressure under the seat globe valve may be determined by the following equations, which are provided by reference 2.1.CLOSING THRUST=(dp*A*FV)+SBL+[SA*(P-dP)]
OPENING THRUST=SBL-(dP*A)-[SA*(P-dP)]
where: THRUST=The required stem thrust, in pounds-force.
dp The differential pressure across the valve.The.seat area of the valve, which is 2.76 square inches based on contact seat diameter (Section 3.1).An empirical valve factor, which is 1.1 per reference 2.1.SBL The stuffing box load, or packing drag, expressed in pounds-force.
This is 1500 pounds per reference 2.1.SA The area of the stem, in square inches.For the stem diameter given in section 3.1, this area is 0.99 square inches.The inlet system pressure.1CS-746 Page Not 8 Prepared By: Checked By: Calo.ID!*CS-0021 Revisions 2 4~3~1 v h Re red t imum dP ont.From the information given above, the closing thrust may be calculated.
CLOSING THRUST (2 i 707*2~76*1 1)+1 i 500+[0~99*(2 i 707 2 i 707]8,218+1,500+0=9,718 pounds The value of 9,718 pounds includes a conservatism of approximately 104 due to the assumed valve factor of 1.1, and an additional conservatism of approximately 500 to 1,000 pounds due to the assumed packing load of 1,500 pounds (see attachment D).In addition, normal CP&L practice is to multiply the calculated closing thrust by 1.15 in order to account for possible VOTES measurement errors and torque switch repeatability.
Thus, the theoretical calculated closing thrust is 11,176 pounds.NOTE: Liberty Technologies issued a 10CFR21 notification on 10/2/92 which documents potential thrust measurement inaccuracies due to torsional effects on small stems.A review of the design of 1CS-746 has confirmed that the anti-rotation device is located in the yoke flange, above that portion of the stem where the VOTES calibrator was installed.
Thus, the subject 10CFR21 notification does not apply to this valve.The calculated minimum allowable closing thrust, of 11,176 pounds is within the thrust capabilities and ratings of the valve and actuator, which are 14,432 and 14,000 pounds, respectively.
However, there is a concern that inertial effects may cause the final thrust to exceed the continuous ratings of the actuator and valve.A review of differential pressure test data for 1CS-752 (a'ister valve), which was tested at approximately 2,730 psid, indicates that thrust at torque switch trip was 11,131 pounds (attachment F).Final seating thrust due to inertia was 13,432 pounds (attachment E), which represents a thrust increase of 214.Since the assumed VOTES measurement error is+104, the actual final thrust may exceed the continuous thrust ratings of the actuator and valve.Thus, it is desireable, if possible, to adjust the torque switch to trip at a lower value of thrust.1CS 746 Pago Moi 9 Prepared By!Checked By<Calc.ID!*CS-0021 Revisions 2 4~3~1 ve axi um d can Test data for 1CS-752 indicates that flow isolation was achieved at 7,804 pounds (attachment C)of thrust at an indicated test dP of 2730 psid.This test was performed with a spool piece installed in lieu of the relief valve.The'roposed configuration of multiple orifices installed upstream of the MOVs will reduce upstream pressure at the valve, thereby making the results of this previous test conservative.
The average closing packing load during the RF03 test of 1CS-752 was 456 pounds (attachment D).This packing load is included in the 7,804 pounds of thrust at flow isolation; therefore, the thrust required to overcome differential pressure is equal to 7,348 pounds.In order to allow for variations in packing, a packing load of 1500 pounds will be assumed.From the information given above, the expected closing thrust may be calculated.
CLOSING THRUST=7,348+1,500+[0.99*(2,707-2,707]
7i 348+1i 500+0=8,848 pounds A differential pressure and line pressure of zero is assumed to provide for the most conservative opening thrust.OPENING THRUST=1,500-(0*2.76)-[0'9*(0-0)]1,500-0-0=1,500 pounds 4~3'a t The minimum allowable closing/opening thrust at torque switch trip shall be 1.15 times the calculated required thrust when actuator torque is)50 foot-pounds and 1.20 when actuator torque is (50 foot-pounds, in order to account for possible measurement errors and torque switch repeatability.
Thus, MINIMUM CLOSING DIAGNOSTIC THRUST~REQUIRED THRUST*1.15 8,848*1.15 10,175 pounds 1CS-746 Page Mo: 10 prepared BY-Chooked Byt Calo.ID:*CS-0021 Revision: 2 4owed Dia T st o nue MINIMUM OPENING DIAGNOSTIC THRUST=REQUIRED THRUST*1.20 1,500*1.20 1,800 pounds 4.4 commended nimum Tor e w tch Settin The input torque (actuator torque)required to produce the thrust values calculated in section 4.3, may be calculated using the following equation (reference 2.1).ACTUATOR TORQUE=THRUST*STEM FACTOR Based on the stem factors given in section 3.3, Assumption 3, the actuator torque for the normal opening and closing conditions may be calculated as follows: MINIMUM CLOSING TORQUE=10,175*0.0179=182 ft-lbs MINIMUM OPENING TORQUE=1,800*0.0179 32 ft-lbs 4.5 o 0 m 8 The available motor torque at degraded-voltage conditions limits the available actuator torque.If a torque switch is set above the minimum available torque, there is a possibility of stalling the motor before the torque switch can actuate.In order to prevent this situation, the maximum torque switch setting value shall not exceed the minimum available torque provided by the motor at degraded-voltage conditions.
1CS-746 Pago No: 11 Prepared Bps Checked BY Calo.ZD!*CS-0021 Revisi.on!
2 4~5~1 ato o ted According to reference 2.1, the closing actuator torque that will be developed by the minimum available motor torque (reference 2.3)is calculated as follows.ACTUATOR TORQUE=MOTOR TORQUE*UNIT RATIO*RUNNING EFF.*0.9 5.9*82.0*0.50*0.9 218 foot-pounds 4e A ator or e ited Mo a According to reference 2.1, the opening actuator torque that will be developed by the minimum available motor torque (reference 2.3)is calculated by: ACTUATOR TORQUE=MOTOR TORQUE*UNIT RATIO*PULLOUT EFF.*APPLICATION FACTOR 5.9*82.0*0'*0'174 foot-pounds 4'4~6~1 st and o e The allowable thrust limits of the actuator and valve are shown below.The limiting components in the opening and closing directions define the maximum allowable continuous thrust setting.COMPONENT ACTUATOR VALVE CLOSING VALVE OPENING LIMIT POUNDS*12 600**12 989**12 989 SOURCE REF.2~1 Attachment B Attachment B*This limit is 904 of the Limitorque qualified continuous rating.**These limits represent 904 of the Velan continuous duty ratings as provided in attachment B.1CS-746 Pago los 12 Prepared By!Checked By>Calc.ZD!*CS-0021 Revision: 2 4'1 Tor e imits s and o imit Co ti ued The allowable torque limits of the actuator and valve are shown below.The limiting component defines the maximum allowable continuous torque setting.COMPONENT MOTOR CLOSING MOTOR OPENING ACTUATOR SPRINGSET PACK LIMIT FOOT-POUNDS 218 174*225 250 SOURCE SECTION 4.4 SECTION 4.4 REF 2'REF.2.11*This limit is 904 of the Limitorque qualified continuous rating.4e 0 s From reference 2.1, the wormshaft torque that must be applied to achieve a required output torque may be calculated by: WORMSHAFT TORQUE I 0 0 UE WS RATIO*WS EFFICIENCY 4.6.2.1 Clos n orms aft o The equivalent wormshaft torque is provided for the purpose of verifying the closed torque switch setting with a torque wrench.MINIMUM WORMSHAFT TORQUE MAXIMUM WORMSHAFT TORQUE 45*0 36 135 INCH-POUNDS 45*0 36 162 INCH-POUNDS 11'3 FOOT-POUNDS 13'6 FOOT-POUNDS 1CS 746 Page Mo!13
Prepared By<Cheoked By!Calo.ID:*CS-0021 Revision!2 4s aft or o For this valve the recommended minimum opening torque setting is 32 foot-pounds, and the maximum allowable open torque setting is 174 foot-pounds.
However, it is not practical to.set the opening torque switch with a torque wrench because this would cause the stem to be forced against the backseat.Therefore, the open torque switch shall be ad)usted to a setting of"1" (Reference 2.11).4~7 According to electrical analysis (reference 2.3)performed for this valve, the maximum available motor torque at the most favorable conditions is 11.3 foot-pounds.
According to reference 2.1, the stall torque of the operator may be calculated by: ACTUATOR STALL TORQUE MAXIMUM MOTOR TORQUE*UNIT RATIO*STALL EFFICIENCY 11'*82.0*.50=463 FOOT-POUNDS The corresponding stall thrust may be calculated as follows (reference 2.1): Note: The stem factor for a coefficient of friction of 0.15 is used for conservatism (see section 3.3).STEM FACTOR~6 29,679 POUNDS 0.0156 The one-time limits of the valve and actuator are as follows: COMPONENT ACTUATOR TORQUE ACTUATOR THRUST VALVE CLOSING VALVE OPENING LIMIT 500 FOOT-POUNDS 35 000 POUNDS 35 616 POUNDS 35 616 POUNDS SOURCE REF.2~1 REF.2~1 ATTACHMENT B ATTACHMENT B 1CS-746 Pago No!14 proparod By!Checked By!Calc.XDc*CS-0021 Rovisioni 3 4.7 Stal aluation Continued The calculated stall forces for this Motor Operated Valve (MOV)indicate that the potential does not exist for damage to the actuator and valve power train and load-bearing components.
4.8 e Sw tc S As shown in reference 2.4, the actuator is equipped with a four train limit switch assembly, arranged in the following manner: 4.8.1 Bases of m t Switch Set o t e e e ts otor 1 Rotor 41 acts as the open limit switch, in order to stop the motor after the valve has traveled to the full open position.It provides position indication (it turns off the green indicator lamps when the valve is full open).The practice at SHNPP has been to set the open limit switches to actuate when the disc is at 964 of full open position unless otherwise specified on the control wiring diagram (reference 2.5).Operating experience has shown that this setting provides for proper flow rate, however, RP03 testing of a sister valve identified that the valve stem was coasting into the backseat.Thus, a setpoint of 964 may not be adequate and therefore, a setpoint of 904 is recommended (see Attachment A for justification).
motor~When the valve is given a signal to close, the motor runs in the closing direction until the torque switch is actuated, which stops the motor.Rotor g2 is wired to provide a bypass around the close torque switch until the valve is at the 44 position.In addition, rotor$2 provides valve position indication (it turns off the red indicator lamps when the valve is fully closed).1CS 746 Pago Ho!15 Prepared W!Chewed By<Calo.ZDt*CS-0021 Rovisi.on<
2 8~1 m t Sw tc t o nt e i e t In order to assure proper position indication in the close direction, the close limit switch should be ad)usted to indicate a closed condition only after the disc has covered the valve seat.The practice at SHNPP has been to set the close limit switches to actuate when the disc is at the 44 position unless otherwise specified on the control wiring diagram (reference 2.5).Operating experience indicates that 44 from fully closed is adequate to meet the setpoint requirements for rotor$2.Thus, 44 is an acceptable setting, and can be retained.R&simM Rotor 43 is not used..Rotor 44 provides position indication to the main termination board.It also provides a permissive which allows valve 1RH-25 to open provided valve 1CS-746 is closed and other conditions are met.order to assure proper position indication in the close direction, the close limit switch should be adjusted to indicate a closed condition only after the disc has covered the valve seat.The practice at SHNPP has been to set the close limit switches to actuate when the disc is at the 44 position unless otherwise specified on the control wiring diagram (reference 2.5).Operating experience indicates that 44 from fully closed is adequate to meet the setpoint requirements for rotor$4.Thus, 44 is an acceptable setting, and can be retained.4w to S tt ts tin s In this case, the various limit switch rotors are required to be set as follows: ROTOR 41: ROTOR g2: I ROTOR g3: 904 of full open 44 of full open NA ROTOR g4: 44 of full open 1CS 746 Page Mo: 16 Prepared Bys Checked By!Calc.ZDs*CS-0021 Revisions 2 4~8~2 Settin reme ts Co u The preferred method for setting limit switches is to determine the number, of.handwheel turns needed for a full stroke, and then to set the switches at, the required percentages based upon that.The total number of handwheel turns needed to stroke the valve may be determined if the stroke length, thread lead, and handwheel ratio are all known.The total handwheel(HW) turns to fully stroke the valve is calculated as follows: TURNS~=VALVE STROKE/THREAD LEAD*HANDWHEEL RATIO 1.5 inches/.667 inches*4.38 9.85 handwheel turns 44 of 9.85 handwheel turns is equal to 3/8 handwheel turn.104 of 9.85 handwheel turns is equal to 1 handwheel turn.4.9 o al 0 t o a o s ov o o o s ctua m v t With the information provided in section 3.1, the stem nut revolutions per valve stroke and the stem nut revolutions per minute can be determined as followss/LEAD 0=~5 0.667 2'5 STEM NUT REVOLUTIONS/MINUTE 0 0 OVERALL UNIT RATIO 82.0 20.73 1CS-746 Page Mos 17
Prepared Bys Checked Bys Cale.ZDs PCS-0021 Revisions 2 4.9 o i e C nued With these calculated values the nominal expected operating time of this valve can be calculated using the following equation: STROKE TIME=V STEM NUT REVOLUTIONS/MINUTE 5 20.73 0.11 MINUTES/VALVE STROKE 6.5 SECONDS/VALVE STROKE This valve has no specific stroke time requirements other than the generic 10 second maximum stroke time required by reference 2'3.1CS 746 Page los 18
Prepared By: Checked Bp Calc.ID'CS-0021 Revi.siont 2 5'RESU S CO U 0 5.1 Results and Concl sions NDATIONS 1)The actuator torque switch and limit switch ranges shall be established as shown in table 5.1.CLOSING THRUST RANGE (POUNDS)MINIMUM MAXIMUM OPENING THRUST RANGE (POUNDS)MINIMUM MAXIMUM 10 175 12 600 1 800 12 600 RECOMMENDED CLOSE TORQUE SWITCH SETTINGS MINIMUM MAXIMUM RECOMMENDED OPEN TORQUE SWITCH SETTINGS MINIMUM MAXIMUM 182 FT-LBS 2 18 FT-LBS 32 FT-LBS 174 FT-LBS EQUIVALENT CLOSE WORMSHAFT TORQUE MINIMUM MAXIMUM EQUIVALENT OPEN TORQUE SWITCH DIAL SETTING MINIMUM MAXIMUM 135 IN-LBS ROTOR¹1 904 1 HW TURN FROM FULL OPEN 162 IN-LBS LIMIT SWITCH SETTINGS ROTOR¹2 ROTOR¹3 N/A 3/8 HW TURN FROM FULL CLOSED ROTOR¹4 3/8 HW TURN FROM FULL CLOSED 5~2 o e It is recommended that this valve be retested at maximum achievable differential pressure and flow upon completion of PCR-6547.The test results will be evaluated to confirm the setup ranges established in this calculation are acceptable.
1CS-746 Page Mo: 19 BETWEEN: MECHANICAL ENGINEER CAROLINA POWER%LIGHT AND~-MR, MANAGER OF ENGINEERING VELAN INC.DATE: JANUARY 6, 1992 Attachment A Calc.No.'CS4021 Revision 2 Valve No.1CS-746 Page 1 of 1 TIME: 2~35PM
SUBJECT:
2" AND SMALLER VELAN GLOBE VALVES MR.STATED THAT 90t OF FULL OPEN STROKE WOULD ALLOW FULL DESIGN FLOW.
Attachment B Calc.No.'CS-0021 Revision 2 Valve No.1CS-746 Page 1 of 3 V(A FAX Number of pages including this page: Q Please reply by FAX to: Q Head Offfce and Plant No, 1 (514)748-8635 Q Marketing (514)748-7592 Q Plant No.2 (514)341-3032 Q Spare Parts (514)342-2311 Q Plant No.3 (802)862M14 ClPlant No.4 (514)378%865 Message No.: Oatei From: To: Attention; Copies to: I.5 Subject/
Reference:
~uM GLOBE VALVE 2 in STEM ANALYSZS Attachment B Calc.No.'CS4021 Revision 2 Valve No.1CS-746 Page 2 of 3 UTZLZTY: CAROLZNA POWER AND LZQHT W.X.D.g: VALVE DWG: E73-62S~STEM DWG.7913-22 Order no.P9-Design Temp.Pressure Class 125 deg F 1500 lb STEM THRD.1 1/8-3 ACME douhle lead STEM MAT.SS 630 A 564 Sa~45950 Psi Code Case N-62-4 STEM DATA dl d2 0.792 in.0.917 0.425 in.0.396 in.root dia of thread dim.at sec.d2 dim.at sec.k rad.d/2 0.016 ft.lb./lb thread.factor al a3 0.492 in.2 0.660 in.2 1.224 in.2 0.039 in.4 0 in.0 in.0.019 in.4 root area of thread area oi sec.d2 area at 42 in shear polar moment oi iner-tia at'cam thread off-1cngth of stem torque arm radius Moment of Znertia Ki2'd TTE2 2&PTS 2d Sled 389dS NU~91:ST 26'G lDO I
GLOBE VALVE-2 in aaa~~aaa--~aaaa STEM ANALYSIS&&W W'W M M m M M W W es Attachment B Calc.No.'CS-0021 Revision 2 Valve No.1CS-746 Page 3 of 3 UTILITY: CAROLINA POWER AND LIGHT Order no.P9-W.I o Do 2TM78FNM VALVE DWG: E73-62S STEM DWG 7913 22 Design Temp.Pressure Class 125 deg F 1500 lb STEM THRD.1 1/8-3 ACME double lead STEM MATo SS 630 A-564 Sy~11339'6 Psi Code Case N-62-4 STEM CALCULATION At Section dl Max Tr At Section d2 14432 lbs.from Eq.(19)Max Tr At Section k 30347 lbs.from Eq.(20)Max Tr 33756 lbs.from Eq.(21)MAX Thrust/Torque CLOSING OPENING Tr./lbs.Tor./lb-ft Tr./lbs.Tor./lb-xt CONTINUOUS DUTY ONE TIME 14432 35616 224 14432 554 35616 224 554KiB'd TYKE Zt K 0TS 2d Sled 3HUdS NU Uh t0:ST 26r 88 lDO ATTACHMENT C'CS4021, Rev.2 Page 1 of 1 Test: 4 3ZV9i 22'49'ii VBZR SISOR.5000 Tag'S-752-10000 orce=-7884 (IbS)@000.20000 52997 53$97 P$97 SS$97 SC$9>0$97%ITCH B SIITCH C S2$91 53$91 Tias in Seconds S5,397 P$97 SS$9)SC$97 5)$97 Y-EÃPS ON 1CS-752: Flow Isolation/Seating Thrust2730 PSID
ATI'ACHMENT D'CS4021, Rev.2 Page 1 of 1 Test: i 3CKIi 2'25'5 VRZS SENSOR.%$0-%60 Tag: i(Z-752 once=-456 (1hS)-uo-%40 2$209 25309 2$%09 2$$09 2$609 2$709 2S209 2$309 Ties in Seconds K%53 2$%09 2$$09 2$609 2009 1CS-752: Average Closing Packing Load, Static Conditions
ATI'ACHMENT E'CS4021, Rev2 Page 1 of 1 Test: 4 3)23/91 22'49'ii Tag: iCS-752 IJES IOR once=-13432 (Ib)<<2$000<<20000$530%55%0%$$$0%5$%$570%SIITCH A%ITCH B%ITCH C$530%S$%0%TiIM;in Seconds 55.688$$$0%SS)0%$$00%1CS-752, Final TIImst Due to Inertia 4 1'Pl I W f'N apr',, lg~i)1'>>'v 4I tl ATTACHMENT F'CS4021, Rev.2 Page 1 of 1 Test'3/23/31 V.'6'ii V jrI'ES SENOR.10000 Tag'CS-752 orce=-iii3i)15000-20000 5530't 55908 SSO't 5560%SPO'k 55405 IITCH A SMITCH B SMITCH C 5530'f 55t0%Til.ia Secanh 55.<88 550%5560%5510%5500%1CS-752, Thrust At Torque Switch Trip
."af V f kv DISCIPLINE DESIGN VERIPICATION RECORD l.instnatiaa to Verification Persanel Attachment G Calc.No.'CS4021 Revision 3 Valve No.1CS-746 Page 1 of 2 Plant Pro ject File Ko.Oocunent Ko.Rev Q Level g Q (Class A)[]Seismic (Class 8)[]FP-Q (Class 0)[]Other Oesign verification should be done in accordance vith AKSl KI5.2.11, Section 6, as emended by Regulatory Guide 1~64, Rev.2.Special instructions:
Oiscipline Project Engineer l l.Veri f icatim Ooca~tation Applicability i ci line Hechani ca 1 HVAC Electrical le Other[][][)Oisci line Civil Structural Seismic Equip.Qual.Civil Stress Fire Protection Enviroreantal Qualification Huian Factors Katerials[][][)[][][][)[]Verification Hethods Used: gl Oesign RevieM[)Alternate Calculations
[]Qualification Testing Oesign Oocuaent Acc¹atablet~es i)4 Oesign Verifier Ko[)-caments attached.Oate)+14 Acknowledgement of Veri f icationt (OPE)Date ill.Rcaaluticn ef C~tst Ccamnts Resolved (See Attached)t (RE)Action taken makes Oesign Oocuaents Acceptable:
Oesign Verifier gate Oate (OPE)gate KEO Procedure 3.3/Rev.5o Il I'I Mt 1W WtV" V+h 0 D ISCIPLIIIE DESI Ql VER IFTCATIQI RECND CCNNEIIT SHEET Attachment G Calc.No.'CS4021 Revision 3 Valve No.1CS-746 Page 2 of 2 Plant Project File Ho.Document Mo.+~-OO2i Rev This sheet is only required Ken ccaments ere being made.C ament Ho.Ccament Resolution Resolved Initial/Date NEO Procedure 3.3/Rev.50 0'I