ML20116J502

Pressure Locking Evaluation for Required Pullout Force

ML20116J502
Person / Time
Site:	Sequoyah
Issue date:	08/06/1996
From:	TENNESSEE VALLEY AUTHORITY
To:
Shared Package
ML20116J490	List: ML20116J488 ML20116J497 ML20116J502 ML20116J505 ML20116J509 ML20116J515 ML20116J517 ML20116J522 ML20116J525 ML20116J536 ML20116J539 ML20116J541 ML20116J544
References
EPM-RJP-022791, EPM-RJP-22791, NUDOCS 9608130244
Download: ML20116J502 (2)

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P50V Calc No. EPM-RJP-022791 Page 1 of1

. ERFScURE LOCKING EVALUATION FOR REQUIRED PULLOUT FORCE

} } IN, PUTS WR :1 FCV-63167l Valve type = Flex Wedge

VALVE DWG , J885f 7-3 ; EPRI MOV PPP INTERNAL DESIGN INFO, Ref.

VALVE DESIGN DATA MARK No. l8802A D1_ _ _

E1 M1

[4.28125; E2.9375 E23

] '

y -.  : 0.4 theta = 25 deg a= ((D1 + E1) / 2) / 2 = 1.804688 a= 1.8047 inches ro= 1.250 inches b= M1/ 2 = 1.25 = ro

) b= 1.250 inches v= 0.3 v= Poisson's Ratio = _ , : 0.3.

i u = friction coefficient j PRESSURE and TEMPERATURE DATA based on Calc method. & EPRI results \

d theta = 1/2 total valve

. Pbon = e n2235 psi disk angle Phigh = r e m 25 psi Plow = wcau0 psi DP= 25 psid

• Normal Temp = earms0 F Max Temp = eno F

Delta Temp = ,

O F j 'Pbonnet = Pbon + (Delta Temp *33 psi /F) 2235 psi ROARK FORMULAS l 0.041969 C2= (1/4)(1-(b/a)2(1+2in(a/b)])

0.004014 C3= (b/4a)([(b/a)2+1]In(a/b)+(b/a)2-1}

0.817913 C8= (1/2)[1+v+(1-v)(b/a)2]

0.2284 C9= (b/a)(((1+v)/2]In(a/b)+[(1-v)/4][1-(b/a)2 0.000322 L11= (1/64)(1+4(ro/a)2-5(rola)4-4(ro/a)2[2+(rola)2]In(a/ro)} 0.039121 ! L17= (1/4)(1-((1-v)/4)(1-(ro/a)4]-(ro/a)2[1+(1+v)ln(a/ro)}} Load Constant = (C2L17-C8L11)/(C2C9-C3C8) 1 0.218712l J SEAT REACTION LOAD (BONNET psi) Reaction at Hub Perimeter = QH(Bonnet) = Pbonnet(a)(Load Constant) 882.2 lb/in l -438.2 lbfin Reaction at Seat: QS(Bonnet) = QH(Bonnet)(b/a)-(Pbonnet/2a)(a2-b2) SEAT REACTION LOAD (Disk Area DP) Reaction at Hub perimeter = OH(DiskDP) = (DP)(a)(Load Constant) 9.86767 lb/in

                                                                                                                     -4.90133 lbfin Reaction at Seat = QS(DiskDP) = QH(DiskDP)(b/a)-((DP)/2a(a2-b2))

l SEAT REACTION LOAD (Hub Area DP) 25.49267 lb/in Force on Hub due to DP = Whub = CH(DPdisk)+(DP)PI(b*2))/2PI(b)

                                                                                                                     -17.6573 lb/in Reaction at Seat = QS(HubDP) = (-Whub)(b/a)
                                                                                                                     -889.114 lb/in
       - Sum of Seat Reaction Loads = 2*QS(Bonnet)-QS(DiskDP)+QS(HubDP) 0.387951 VF = mu/(cosA + musinA)                                                                                       -3911.15 lbs Thrust Load = VF*(Sum Seat Reaction)*(Seat Circumference)
                                                                                                                          -4056 lbs Unwsdging Load (Static test)

TOTAL THRUST = Thrust Load + Unwedging Load = l -7967.15llbs NOTE: THE NEGATIVE SIGN INDICATES THAT THE STEM IS IN TENSION l 9608130244 960806 i PDR ADDCK 05000327 P PDR Rev. Prepared: Checked: / M

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           'MO'V Calc No.                                EPM-RJP-022791                                    Pcgs 2e4
,, y ..              PRESSURE LOCKING REQUIREMENT =                      7967 lbs ACTUATORNALVE CAPABILITY EVALUATION                     CALCULATION:           EPM.RJP-022791 i

Actuator Model 1SMB-01 Motor Start Torque (MT) 5"$640lftibs I Overall Gear Ratio (OGR) s j41L33 ) Pullout Efficiency (PE) x a 'j[40;% i Application Factor (AF) 0.9 or 1.0 $ 30.9 430.6VAC i Valve Factor (VF) 1.0 or (VF/460)"2 1.0000 , Stem Factor (SF) ggf0.0jl1,; s l Max Temperature (Temp) 215 F Loss Percentage (elevated temp) IM 233 % Note 1 Torque Loss Factor = 1-Loss %*(Temp-104)/(356-77) 0.9069 Actuator Torque Capability = (MT

• OGR
• PE
• AF
• TLF
• VF) 539.75 ftibs SF =

Actuator Thrust Capability = Torque / Stem Factor 31564 lbs 0.0171 Actuator Thrust / Torque Rating l7724000llbs l IAafj5,00]ftlbs Valve Weak Link Thrust / Torque Rating [20200;lbs SF = 345.42 filbs 0.0171 Seismic Thrust / Torque Rating (([$24000)lbs SF = l 410.4 filbs 0.0171 ' Note 1:

Reference:

Limitorque Technical Update 93-03 RESULTS: PRESSURE LOCKING REQUIREMENT = 7967lbs ACTUATOR / VALVE LIMITING CAPABILITY = 20200 lbs COMMENTS:  ! 1 I i l Rev. Prepared: . Checked: //}}