ML20116J505

Pressure Locking Evaluation for Required Pullout Force

ML20116J505
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
2-FCV-63-156, GL-89-10, NUDOCS 9608130245
Download: ML20116J505 (2)

Text

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MOV Calc No. 2-FCV-63-156 (GL 89-10) Page IoF2-

. PRKPc4RE LOCKING EVALUATION FOR REQUIRED PULLOUT FORCE

m"QT= lNPUTS MOV ~2-FCV-63 156 ; Valve type = ' Flex Wedge \

VALVE DWG ' T885f 7-3 :

~

EPRI MOV PPP INTERNAL DEslGN INFO, Ref.

VALVE DESIGN DATA MARK No. j_8802A; , D1 E1 , M 1_ _

12B125 l ;2.9375; m 12.5 u= w 9 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 = ""1.3 v: fnction coefficient PRESSURE and TEMPERATURE DATA based on Calc method. & EPRI results theta = 1/2 total valve Pbon = , 22235 psi disk angle Phigh = wes25 pst Plow = EnWMD #si DP = 25 psid Normal Temp = < wenO F Max Temp = :n w n o F Delta Temp = ,

O F

'Pbonnet = Pbon + (Delta Temp *33psl/F) 2235 psi ROARK FORMULAS 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/C4)(1+4(ro/a)2-5(ro/a)4-4(ro/a)2[2+(rola)2]In(a/ro)}

0.039121 L17= (1/4)(1-((1-v)/4)(1-(rola)4]-(rola)2[1+(1+v)ln(a/ro)]}

Load Constant = (C2L17-C8L11)/(C2C9-C3C8) l 0.218712l SEAT REACTION LOAD (BONNET psi) 882.2 lb/in Reaction at Hub Perimeter = QH(Bonnet) = Pbonnet(a)(Load Constant)

-438.2 lb/in Reaction at Seat: QS(Bonnet) = QH(Bonnet)(b/a)-(Pbonnet/2a)(a2-b2)

SEAT REACTION LOAD (Disk Area DP)

Reaction at Hub perimeter = QH(DiskDP) = (DP)(a)(Load Constant) 9.86767 lb/in

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

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

-17.6573 lb/in i Reaction at Seat = QS(HubDP) = (-Whub)(b/a) l

' -889.114 lblin Sum of Seat Reaction Loads = 2*QS(Bonnet)-OS(DiskDP)+QS(HubDP) i 0.387551 VF = mu/(cosA + musinA) -3911.15 lbs Thrust Load = VF*(Sum Seat Reaction)*(Seat Circumference) -9630 lbs Unwsdging Load (Static test) _.

TOTAL THRUST = Thrust Load + Unwedging Load = l -13541.1llbs NOTE: THE NEGATIVE SIGN INDICATES THAT THE STEM IS IN TENSION 9608130245 960806 PDR ADOCK 05000327 P PDR 4

Rev. 9N Prepared: Checked: r

MOV Calc No. 2-FCV-63-156 (GL 89-10) Page Zoft PRESSURE LOCKING REQUIREMENT = 13541 lbs

^l .

A CTUATOR/ VALVE CAPABILITY EVALUATION CALCULATION: ^2-FCV-63-iS6 Actuator Model ESMB-0 2 Motor Start Torque (MT) ~40 ftibs Overall Gear Ratio (OGR) 41.33 Pullout Efficiency (PE) 40 %

Application Factor (AF) 0.9 or 1.0  ; 0.9 1.0 or (VF/460)"2  ;. S1.0000, 451.9VAC Valve Factor (VF)

Stem Factor (SF) I'%0.Oyij Max Temperature (Temp) 215 F Loss Percentage (elevated temp) bt M5ili% Note 1 Torque Loss Factor = 1-Loss %*(Temp-104)/(356-77) 0.9069 Actuator Torque Capability = (MT

• OGR

• PE

• AF

• TLF

• VF) 539.75 filbs SF=

.. Actuator Thrust Capability = Torque / Stem Factor 31564lbs 0.0171 Actuator Thrust / Torque Rating ji24d%Ibs

{shd5_00,fttbs g

Valve Weak Link Thrust / Torque Rating [{jf;2d2,00llbs SF=

345.42 filbs 0.0171 Seismic Thrust / Torque Rating [ 3 4000;lbs SF=

410.4 filbs 0.0171 Nots 1:

Reference:

Limitoque Technical Update 93-03 .

RESULTS: PRESSURE LOCKING REQUIREMENT = 13541 lbs ACTUATOR / VALVE LIMITING CAPABILITY = 20200 lbs COMMENTS:

w g