106736744 Safety Valve Calc

8/16/2019 106736744 Safety Valve Calc

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Safety valve nozzle M/S.CETHAR VESSELS (P ) LTDM/S.BINANI CEMENTS

SAFETY VALVE NOZZLE DESIGN CALCULATION AS PER ASME B31.1-2010

Description I!"# Unit

Safety valve set pressure = P 289.30

Design temperature !".00 °C

Nozzle material specication SA"82 #"2$%2 -

Young's Modulus of material @ design temp = E 2.8&'0! psi llo!a"le stress for saf#valve nozz#matl @ design te "8200.00 psi

$eig%t of valve = $ 22.00 kgs

Nozzle %eig%t from od of run pipe = & "(.9 mm

Dist# "et!# od of run pipe to centre line outlet pipe 8.9 mm

(un pipe outside diameter =)#D 2!3.00 mm

*%ic+ness of run pipe = *r 33.90 mm

Saf# valve nozz#od @ pipe conn ,point-./ = dn.#=r 20.00 mm

Saf# valve nozz#t%+ @pipe conn ,point-./ = *'"# 63."( mm

Saf# valve nozz#od @ valve conn ,point-/ = dn# 20.00 mm

Saf# valve nozz#t%+ @ valve conn ,point-/ = tn# 62.9 mm

0alve rise time = to 0.0 sec

Moment arm = 1 6"0.00 mm

Moment arm for point ,./ =1. "9 inch

Moment arm for point ,/ =1 "3 inch

Seismic coe2cient ".( -

verage od of saf#valve nozzle = do 8.03" inch

verage id of saf#valve nozzle = di 3.06 inch

Moment of inertia of saf#valve nozzle = 3 "99.9(

0.006669 sec

(atio = to4 * 6.00 -

Dynamic load factor ,g 33#5# of ap6#-33 of asme "5. "."" -

BENDING MOMENTS AT POINTS (1) $ (2)

(eaction force @ disc%arge el"o! e6it = 7. 8026.30 kg

!"(!0.83 in-lb

Seismic force = 7s = mass 6 acceleration "39( lbf

8end#moment @ pt .due to seismic force =Ms,./ = 26(0( in-lb

8end#moment @ pt due to seismic force =Ms,/ = "8"3( in-lb

9om"ined "end#moment @ pt . = M. = M.,./ : Ms 980!(.83 in-lb

9om"ined "end#moment @ pt = M = M.,/ : Ms 89!0(.83 in-lb

Mean radius of run pipe = (m .!0! inch

Mean radius of saf valve nozzle @ pt . = r'm 2.!!3 inch

STRESS INTENSIFICATION FACTORS AT POINTS (1 )$ ( 2)

)uter radius of saf valve nozz @ pt . = rp .02 inch

3.3 -

Stress intensication factor for pt ,"utt !eld/ = i, ".00 -

kg/cm2

inch4

Safety valve installation period = * = ;#. 6 ?,$

8ending moment @ pt . due to force7.=M.,./ M.,/ = 7. A 1 A D17

= i,./ = ,,(m4*r/B45/6,r'm4(m/B;#C 6 ,*'"4 *r/ 6,r'm4rp/


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PREDICTED STRESSES AT POINT (1) - BRANCH CONNECTION

(atio = Do4 *r for run pipe 8.0( -

(atio = dn.4 *'" for safety valve nozzle 3.23003800( -

ts = lesser of *r or ,i./*'" " inch

r" = r'm 2.!!3 inch

Section modulus of point ,./ =.= r"B ts 32.00

Pressure stress,./ for "ranc% conn# =Ps,./ 8282.30 psi

000.63 psi

PREDICTED STRESSES AT POINT (2) - BUTT %ELD

(atio = dn.4 tn for safety valve nozzle 3.26 -

9.!9

Pressure stress,/ for "utt !eld =Ps,/ 33(!. psi

7actor ;#FC 6 i,/ 0.!( -

" -

983(.2" psi

COMPARISON OF PREDICTED STRESS %ITH ALLO%ABLE STRESS

3ncrease factor for %ot allo!a"le stress = + ".20 -

llo!a"le %ot stress @ design temp = + 6 S% 2"80.00 psi

8322.93 psi

"3"92.6 psi

9om" stress,./ condition c%ec+ 9s,./ G= ,+ 6 S%/ NOT SAFE -

9om" stress,/ condition c%ec+ 9s, /G= ,+ 6 S%/ SAFE -

inch3

7le6ure stress,./ for "ranc% connection =7s,./=,;#FC6 i,./6 M,.//4 ,./

,dnB- diB/4dn inch3

ta+en as .#;

7le6ure stress,/ for "utt !eld =7s,/=,;#FC6 i,/6 M,//4 ,/

9om"ined stress at point ,./ "ranc% conn = 9s,./=Pr#stress Ps,./ :7le6#stress 7s,./

9om"ined stress at point ,/ "utt !eld =9s,/ =Pr#stress Ps,/ : 7le6#stress 7s,/


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Date:-02-09-06Rev:-00 .

Prepared by Verified by Approved by .

SAFETY VALVE NOZZLE DESIGN CALCULATION AS PER ASME B31.1-2010

Description I!"# Unit

Safety valve set pressure = P 2!0.30

Design temperature (!3.60 °C

Nozzle material specication SA"82 #"2$%2 -

Young's Modulus of material @ design temp = E 2.8&'0! psi llo!a"le stress for saf#valve nozz#matl @ design te 000.00 psi

$eig%t of valve = $ 22.00 kgs

Nozzle %eig%t from od of run pipe = & 200.00 mm

Dist# "et!# od of run pipe to centre line outlet pipe (20.00 mm

(un pipe outside diameter =)#D 2!3.00 mm

*%ic+ness of run pipe = *r 3."0 mm

Saf# valve nozz#od @ pipe conn ,point-./ = dn.#=rp "8.20 mm

Saf# valve nozz#t%+ @pipe conn ,point-./ = *'"# (9.60 mm

Saf# valve nozz#od @ valve conn ,point-/ = dn# "8.20 mm

Saf# valve nozz#t%+ @ valve conn ,point-/ = tn# (8.80 mm

0alve rise time = to 0.0 sec

Moment arm = 1 6"0.00 mm

Moment arm for point ,./ =1. 20 inch

Moment arm for point ,/ =1 "3 inch

Seismic coe2cient ".( -

verage od of saf#valve nozzle = do !.2(2 inch

verage id of saf#valve nozzle = di 2.(6 inch

Moment of inertia of saf#valve nozzle = 3 "33.66

0.0090(8 sec

(atio = to4 * .2 -

Dynamic load factor ,g 33#5# of ap6#-33 of asme "5. "."( -

BENDING MOMENTS AT POINTS (1) $ (2)

(eaction force @ disc%arge el"o! e6it = 7. 929!.! kg

(6(9(0.3" in-lb

Seismic force = 7s = mass 6 acceleration "39( lbf

8end#moment @ pt .due to seismic force =Ms,./ = 2!900 in-lb

8end#moment @ pt due to seismic force =Ms,/ = "8"3( in-lb

9om"ined "end#moment @ pt . = M. = M.,./ : Ms (938(0.3" in-lb

9om"ined "end#moment @ pt = M = M.,/ : Ms (808(.3" in-lb

Mean radius of run pipe = (m .!03 inch

Mean radius of saf valve nozzle @ pt . = r'm 2.(3 inch

STRESS INTENSIFICATION FACTORS AT POINTS (1 )$ ( 2)

)uter radius of saf valve nozz @ pt . = rp 3.63 inch

2.9( -

Stress intensication factor for pt ,"utt !eld/ = i, ".00 -

PREDICTED STRESSES AT POINT (1) - BRANCH CONNECTION

(atio = Do4 *r for run pipe 8.0" -

(atio = dn.4 *'" for safety valve nozzle 3.090600268 -

ts = lesser of *r or ,i./*'" " inch

r" = r'm 2.(3 inch

kg/cm2

inch4

Safety valve installation period = * = ;#. 6 ?,$

8ending moment @ pt . due to force7.=M.,./ M.,/ = 7. A 1 A D17

= i,./ = ,,(m4*r/B45/6,r'm4(m/B;#C 6 ,*'"4 *r/ 6,r'm4rp/


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Date:-02-09-06Rev:-00 .


Section modulus of point ,./ =.= r"B ts 2(.00

Pressure stress,./ for "ranc% conn# =Ps,./ !692.9! psi

(2(((.!( psi

PREDICTED STRESSES AT POINT (2) - BUTT %ELD

(atio = dn.4 tn for safety valve nozzle 3."3 -

36.86

Pressure stress,/ for "utt !eld =Ps,/ 30"0.22 psi

7actor ;#FC 6 i,/ 0.!( -

" -

"(8(."2 psi

COMPARISON OF PREDICTED STRESS %ITH ALLO%ABLE STRESS

3ncrease factor for %ot allo!a"le stress = + ".20 -

llo!a"le %ot stress @ design temp = + 6 S% 800.00 psi

6028.!2 psi

"88((.3 psi

9om" stress,./ condition c%ec+ 9s,./ G= ,+ 6 S%/ NOT SAFE -

9om" stress,/ condition c%ec+ 9s, /G= ,+ 6 S%/ NOT SAFE -

inch3

7le6ure stress,./ for "ranc% connection =7s,./=,;#FC6 i,./6 M,.//4 ,./

,dnB- diB/4dn inch3

ta+en as .#;

7le6ure stress,/ for "utt !eld =7s,/=,;#FC6 i,/6 M,//4 ,/

9om"ined stress at point ,./ "ranc% conn = 9s,./=Pr#stress Ps,./ :7le6#stress 7s,./

9om"ined stress at point ,/ "utt !eld =9s,/ =Pr#stress Ps,/ : 7le6#stress 7s,/


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Date:-02-09-06Rev:-00 .



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)*)+A)DA,*R

Rle/ for te de/i1n of /aftey valve in/tallation

a Design pressure and velocity

P inlet pre//re Ab/olte 92( p/i

, 4nlet te5pereatre "000

At5o/peri pre//re "( psia

W 7ei1t of te valve 800 lb #ro5 SV data /eet

Valve openin1 ti5e 0.0 sec #ro5 SV data /eet

Di/ar1e elbo area (0.03

ravitational on/tant 32.2

"(0!.30 Btu/lbm #ro5 /tea5 table/

j on/tant !!8."6 Btu/lbm

W Atal 5a// flo rate ""6.38 lbm/sec

Pre//re te di/ar1e elbo ""8 psia

Veloity te di/ar1e elbo 2""6 ft/sec

B Discharge Elbow max operating pressur

#or 8 in. la// "(0 AS+& 7eld ne; flan1e

% in H ,14D/ =D !.98" in 32.00

% ".6!

% "2

D !.98" "9 p/ia

%


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D Bending Moment at points (1 and (!

(A!

@ F1 " # " $#F

# 5o5ent ar5 2.00 in

$F# Dyna5i load fator "."" fro5 1rap

%o Fin& $F#

' )oungs mo&ulus of inlet pipe * &esign t 23000000 Psi

"9 in

+ ,oment of inetia of inlet pipe

*D 9.8!( in

4D 6 in

+ 03

Ben&ing moment , 0.00( sec

#or a valve ri/e ti5e

300!.23 in-lb

(A!

Aeleration ".( Data fron /trtre

5a// aeleration

"200 lbf

5o5ent ar5 for point " "9 in

22800 in-lb

5o5ent ar5 for point 2 "2 in

"00 in-lb

(c!

36320!.23 in-lb

3(80!.23 in-lb

Ben&ing moment at the point (1! . (2! &ue to ecation at point (1!

,1(1!

,1(2!

h &istance fom un pipe to centeline ofoutlet piping

in

,1(1!

,1(2!

,1(1!

,1(2!

Ben&ing moment at the point (1! . (2! &ue to eismicloa&ing

F s

F s

,(1!

,(2!

Ben&ing moment at the point (1! . (2! &ue to eismicloa&ing

,(1!

,1(1!

' ,(1!

,(2!

,1(2!

' ,(2!


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/tea5 ondition a> Bt000

p/ia

/pereated

/tea5 F 90 Eality "000 p/ia Gp" G 2>000 p/ia


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823

.33


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M'-200 -"29 -!3 2" 93 "9 20 260

-32( -200 -"00 !0 200 300 00 (00

C'# *+,

ray a/t iron "3. "3.2 "2.9 "2.6 "2.2S#&&

3". 30.8 30.2 29.( 28.8 28.3 2!.! 2!.3

3".2 30.6 30 29.3 28.6 28." 2!.( 2!."

$arbon-5oly /teel/ 3"." 30.( 29.9 29.2 28.( 28 2!. 2!

29.6 29." 28.( 2!.8 2!." 26.! 26." 2(.!

3".6 3" 30. 29.! 29 28.( 2!.9 2!.(

32.6 32 3". 30.6 29.8 29. 28.8 28.3

32.9 32.3 3".! 30.9 30." 29.! 29 28.6

3".2 30.! 30." 29.2 28.( 2!.9 2!.3 26.!

30.3 29.! 29." 28.3 2!.6 2! 26.( 2(.8

on1 +odl/ of &la/tiity - & - "06

,e5peratre

,e5peratre

$arbon /teel $ [email protected]

$arbon /teel $ @H0.3

)i;el /teel/ )i 2- 9

$r-+o /teel/ $r" "!> 2!

A/teniti /teel/,P30> 3"0> 3"6>

32"> 3!

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3"6 3!" 2! 82 (38 (93 69

600 !00 800 900 "000 ""00 "200

"".! "" "0.2

26.! 2(.( 2.2 22. 20. "8

26.( 2(.3 2 22.2 20.2 "!.9 "(.

26. 2(.3 23.9 22.2 20." "!.8 "(.3

2(.2 2.6 23

26.9 26.3 2(.( 2.8 23.9 23 2".8

2!.! 2!." 26.3 2(.6 2.6 23.! 22.(

28 2!.3 26." 2.! 22.! 20. "8.2

26." 2(.6 2.! 23.2 2".( "9." "6.6

2(.3 2.8 2." 23.( 22.8 22." 2".2

p/i

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106736744 Safety Valve Calc

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