ML20116J525
| ML20116J525 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 08/06/1996 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20116J490 | List: |
| References | |
| 2-FCV-63-26, GL-89-10, NUDOCS 9608130254 | |
| Download: ML20116J525 (2) | |
Text
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a
' MOV Calc No.
2-FCV-63-26 (GL 09-10)
Page 1oF1 PRESSURE LOCKING EVALUATION FOR REQUIRED PULLOUT FORCE (for Double Disc Solit Wedae)
'2-FCV-63 26" Valve type =
DD Shiit Widge
[j)) = INPUTS ARK No.Y 'jySQf[}
VALVE DWG ^ 593 12859 i EPRINP-6516 Calc Meth VALVE DESIGN DATA
? 0.4]
theta (A) =) ;
e Oldeg EPRI MOV PPP INTERNAL DEslGN INFO, Ref.
u:b 4
M1 D1 E1~
a=
1.6438 inches ro=
0.625 inches E 3.M22S73FM.25l I
b=
0.625 inches v=
0.3 a=
((D1 + E1)/ 2)/ 2 =
1.84375 b=
M1/ 2 =
0.625 = ro 1
(D)
Mean Seat Dia (D1+E1)/2 =
3.6875 in v= Poisson's Ratio = ERTOT (d)
Stem Dia =
gyss1.625 in u
seating surfaces friction coef (S2)
Valve Seat Area ((D)^2*Pl/4=
10.68 (in)^2 based on Calc method. & EPRI results 0.4000 (Vf) mu/(cosA + musinA) =
theta =
1/2 total valve (St3)
Stem Area ((d)^2*Pl/4=
l 2.07l(in)^2 disk an0le 1625 lbs Valve Seat Area Based on :
(PI)
Packing Load (Calculated) =
(PI)
Packing Load (Actual, average) =
~ m mago /bs D1, E1 PRESSURE and TEMPERATURE DATA (Pb)
Pbon =
D' Aa A2735l psi m i 32600 psi
.. ' u)
P up =
xon s
.20 psi (Pd)
P down =
l DP =
l 2600lpsid PRESSURE INDUCED. PRESSURE LOCKING THRUST REQUIREMENT:
THRUST = [ { (Pb - Pu) + (Pb - Pd) ) * {S2} * {Vf) ) - { (ST3) * (Pb) ) + Pl ] + UNWEDGING i
WHERE:
Pb = Pressure in valve Bonnet UNWEDGING =
lw Ollbs Pu = Pressure upstream of Valve Pd = Pressure downstream of Valve S2 = Valve Seat Area Vf = Valve Friction Factor St3 = Stem Area Pi = Packing load (maximum value)
THRUST =
8213lbs PRESSURE INDUCED. P L - MAXIMUM BONNET PRESSURE @ ACT/ VALVE LIMITING CAP PRESSURE = { A/VLIMTH + (S2
- Vf * (Pu + Pd)) - Pl } / { (2
- S2 *Vf) - St3 )
PRESSURE =
4099 psi hk
[-
9608130254 960806 PDR ADOCK 05000327 P
MOV Calc No.
2-FCV-63-26 (GL 89-10)
Page 2cFL PRESSURE LOCKING REQUIREMENT =
8213 lbs A CTUATORNALVE CAPABILITY EVALUATION CALCULATION:
2-FCV-63-26 Actuator Model (SMBLO'[
^ ',15 filbs Overall Gear Ratio (OGR) l 87.2 40 %
- ~
Pullout Efficiency (PE)
Application Factor (AF) 0.9 or 1.0
( s [ly,;fi{
j, Valve Factor (VF) 1.0 or (VF/460)"2 P [0.6656; 375.3VAC h"'O.0'187; Stem Factor (SF)
Max Temperature (Temp) 215 F Loss Percentage (elevated temp)
@fD[$%
Note 1 j
Torque Loss Factor = 1-Loss %*(Temp-104)/(356-77) 0.9149 i
Actuator Torque Capability = (MT
- OGR
- TLF
- VF) 318.59 ft!bs SF =
Actuator Thrust Capability = Torque / Stem Factor 17037lbs 0.0187 Actuator Thrust / Torque Rating E[d500Mfilbs f5S661bs t
Valve Weak Link Thrust / Torque Rating Q 987[0]!bs SF =
1 932.57 ft!bs 0.0187 Seismic Thrust / Torque Rating fift3E0d]!bs SF =
628.32 filbs 0.0187 Note 1:
Reference:
Limitorque Technical Update 93-03 RESULTS*:
PRESSURE LOCKING REQUIREMENT =
8213 lbs ACTUATOR / VALVE LIMITING CAPABILITY =
17037lbs 1 CUT = MOTOR CAP COMMF.NTS:
Rev.
Prepared:
Checked:
/