ML20116J515
| ML20116J515 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 08/06/1996 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20116J490 | List: |
| References | |
| 1-FCV-63-25, GL-89-10, NUDOCS 9608130248 | |
| Download: ML20116J515 (2) | |
Text
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' MOT / Calc No.
1-FCV-63-25 (GL 69-10)
Page /oFL PRESSURE LOCKING EVALUATION FOR REQUIRED PULLOUT FORCE (for Double Disc Solit Wedae)
,.1 e i~E ba] =INPQTS*
'1-F C V-6 3 2 5 I Valve type =
DD Spilt Wedge r
ARK No[f024gy VALVE DWG d']93-12869L EPRI NP 6516 Calc Meth
~
4 VALVE DESIGN DATA a = b m n 0.4]
theta (A) =l:
20ldeg EPRI MOV PPP INTERNAL DEslGN INFO. Ref.
l a=
1.8438 inches ro=
0.625 inches
' D1 E1 M1 N.5@jf.'87S$ [1.25 b=
0.625 inches v=
0.3 a=
((D1 + E1) / 2) / 2 =
1.84375 b=
M1/ 2 =
0.625 = ro
,(D)
Mean Seat Dia (D1+E1)/2 =
3.6875 in v= Poisson's Ratio = ""703 (d)
Stem Dia =
sm 21.625 in v
seating surfaces friction coef (S2)
Valve Seat Area ((D)^2*Pl/4=
10.68 (in)^2 based on Calc method. & EPRI results (Vf) mu/(cosA + musinA) =
0.4000 theta =
1/2 total valve (St3)
Stem Area ((d)^2*Pl/4=
l 2.07l(in)^2 disk angle (PI)
Packing Load (Calculated) =
1625 lbs Valve Seat Area Based on :
(PI)
Packing Load (Actual, average) =
> 90 lbs D1, E1 PRESSURE and TEMPERATURE DATA s2735l psi (Pb)
Pbon =
lJ 1
i
=< J2600 psi
- s. a)
P up =
ma20 psi (Pd)
P down =
DP =
l 2600lpsid PRESSURE INDUCED. PRESSURE LOCKING THRUST REQUIREMENT:
THRUST = [ { (Pb - Pu) + (Pb - Pd) } * {S2} * {Vf} } - { (ST3) * (Pb) } + Pl ] + UNWEDGING WHERE:
Pb = Pressure in valve Bonnet UNWEDGING =
[
. Ollbs Pu = Pressure upstream of Valve Pd = Pressure downstream of Valve S2 = Valve Seat Area Vf = Valve Friction Factor St3 = Stem Area Pl = Packing load (maximum value)
THRUST =
8213lbs PRESSURE INDUCED. P L - MAXIMUM BONNET PRESSURE @ ACTNALVE LIMITING CAP PRESSURE = { ANLIMTH + (S2
- Vf * (Pu + Pd)) - Pi } / { (2
- S2 -Vf)- St3 }
PRESSURE =
3879 psi Rev.
Prepared:
Checked:
j[
e 9608130248 960806 PDR ADOCK 05000327 P
-L
)
h10\\/ Calc No.
1-FCV-63-25 (GL 69-10)
Page 2oFL l
{
PRE 9 SORE LOCKING REQUIREMENT =
8213 lbs ACTUR~ ORNALVE CAPABILITY EVALUATION CALCULATION:
1-FCV43-25 Actuator Model SMB E 5 filbs 1
Overall Gear Ratio (OGR) 87.2 Pullout Efficiency (PE)
M0_l%
Application Factor (AF) 0.9 or 1.0 41]
4 0.6100 359.3VAC Valve Factor (VF) 1.0 or (VF/460)"2 p$0iO187j f
Stem Factor (SF)
Max Temperature (Temp) 215 F Loss Percentage (elevated temp)
$[2Q]%
Note 1 Torque Loss Factor = 1-Loss %*(Temp-104)/(356-77) 0.9149 Actuator Torque Capability = (MT
- OGR
- TLF
- VF) 291.98 filbs SF =
Actuator Thrust Capability = Torque / Stem Factor 15614lbs 0.0187 Actuator Thrust / Torque Rating J33600)lbs gjS00,00jftibs Valve Weak Link Thrust / Torque Rating gj49870;lbs SF =
932.57 filbs 0.0187 Seismic Thrust / Torque Rating
- jl336;00)lbs SF =
628.32 ftibs 0.0187 Note 1:
Reference:
Limitorque Technical Update 93-03 RESULTS:
PRESSURE LOCKING REQUIREMENT =
8213 lbs ACTUATOR / VALVE LIMITING CAPABILITY =
15614 lbs i CUT = MOTOR CAP COMMENTS:
Rev.
Prepared:
Checked:
/
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