ML20071E365

Pressure Boundary Calculations of Horizontal Pumps

ML20071E365
Person / Time
Site:	Seabrook
Issue date:	02/09/1983
From:	Mcdonald C MCDONALD ENGINEERING ANALYSIS CO., INC.
To:
Shared Package
ML20071E354	List: ML20071E350 ML20071E365
References
NUDOCS 8303150202
Download: ML20071E365 (19)

Text

ME-9 91

(/p #srf27-o)'

PRESSURE BOUNDARY CALCULATIONS OF HORIZONTAL PUMPS SIZE & TYPE: 6x10x1tlB-CD S.O. NO.: 14210477/60 CUSTOMER:

UNITED ENGINEERS AND CONSTRUCTORS INC.

PLANT:

PUBLIC SERVICE CO. OF NEW HAMPSHIRE CUSTOMER P.O. NO.: SNH-13-9763-006-283-3 SERVICE: CONTAINMENT SPRAY PUMPS Manuf actured By BINGHAM-WIL.LAMETTE COMPANY PORTLAND, OREGON Analysis 'By -

MCDONALD ENGINEERING ANALYSIS COMPANY, INC.

Birmingham, Alabama 8303150202 830310 ,

PDRADOCK05000g ,, _

.. L.

@ CERTIFICATION STATEMENT The pressure boundary design calculations have been made in accordance with the A9fE Code Section III Class 21974 Edition including Winter '75 Addenda. The design conditions are 300 paig internal pressta e at 300' F for the pump. The d,esign conditions for the cooling water are 150 psig and 200 F.

The seismic analysis for this pump is contained in Bingham-Willamette Company Report No. 14210477-05.

n

. * ^

O '

.(

s j l 4

cf\ .

v.

' / i (.L, .

C. K. Mcdonald, Ph.D., P. E.

Alabama Registration No. 9586 February 9, 1983

% .6.. .... 84

., .y ,

[.'

s o : +(G\STE o.os c i P! No. 9586 iJi -

j$i PROFESS 10tlAL/ $g*

2

.T u g$$ff

.Nt/EW

. . . . .. . . .. . /

l G 1

I e

l t

m., ,---; *

, - ir op .; - , - .---7 ' - r----*S**- -

,.r-***

"y?7 '" ~#

t e = m*-*

______..h. ' ~

- __ - _ _.e.

• .-+ -

~

h TABLE OF (X)NTENTS

1. INTRODUCTION 1

2.

SUMMARY

O'F RESULTS -

3

3. LOADIhCS ON PUMP 4 3.1 Nozzle 4 3.2 Internal Pressure Loading 4

4. DETATTE CALCULATIONS 5 4.1 Nozzle Analysis 5 4.2 Casing Thickness 6 4.3 Nozzle Reinforcement 7 4.4 Nozzle Flanges 7 4.5 End Cover and Bolting Analysis 8 ~^

't '

4.6 End Cover Reinforcement 9 4.7 Mechanical Seal Assembly Bolting 10 .

4.8 Seal Cooling Water Piping 10 4.9 Cooling coil 11 l

Appendix A - External Flanges and End Cover Analysis ,

Appendix B - Nozzle Loads  !

t

. t G

t O 4 i

i t

. I

. g .. y . -- =y'* v . 7 :~~' w '; ~ ?;~ ~ ~ s. ~ ~~ - : ' - ~, -n

, , m- .

.c .

._, ,-~[

._ w ,

1. INTRODUCTION This report includes the pressure boundary ' design calculations for the pump and cooling water system.

The pressure boundary calculations are contained in Section 4 of this report. A sin-ary of results is given in Section 2.

i The following procedures were used for the analysis: '

(a) Nozzle Flanges The nozzle flanges are analyzed by the procedures given in Appendix II of the ASME Code. The nozzle flanges were analyzed for both internal pressure only and internal pressure plus external nozzle lead cases. The external loads were applied to the flanges in accordance with the procedures outlined in Paragraph NC-3647 of the ASME Code.

1 - .

l

(~ :

(b) Nozzles

. The stress in the nozzles at the junction -of the nozzle / casing is obtained by the procedure given in the ASME Code Paragraph NC-3652, where the nozzle / casing is treated as an equivalent tee.

(c) Casing -

The stress in the casing is obtained by the method in Paragraph 1

NC-3324.3 of the ASME Code.

(d) End Cover and Bolting The bolting is analyzed per the procedures given in Appendix XI.

The end cover is analyzed as a flat head per Paragraph NC-3325. .

O

$ O[ *,, T , , -[ ' '

'I

• I I -' * '

1. 4: ,. .

0 (e) Nozzle and End Cover Reinforcement The nozzle and end cover reinforcement is checked per ASME Code Paragraphs NC-3332 and NC-3335.

(f) Piping and Cooling Coils The piping and cooling coils are analyzed per ASME Code Paragraphs NC-3641.

The cooling water system calculations are not usually included in the ASME Code Pressure Boundary calculations but are included herein since the design conditions were included in the specification.

G - -

e

1. e e

[

G e

...39._, n.2 -- r -  ;,. . .y - : :-

y7 y; .: . ., -- : ; , cy . - -- ; --. , -- -. - -- . : - . - . . - . .- .

g : h.. , .

- - v

~

- ~

_ - ~

• n. .

s

,4 1

2.

SUMMARY

OF RESULTS The actual stress is compared to the allowable stress or the required thickness is compared to the actual thickness below.

Component Actual Allowable Discharge Nozzle Stress, PSI 6,720 19,800 Suction Nozzle Stress, PSI -

5,991 19,800 End Cover Bolting Stress, PSI 7,192 13,600 Mechanical Seal Bolting Stress, PSI 7,018 13,600 Discharge Flange Stress, PSI 15,958 19,800 Suction Flange Stress, PSI 15,792 19,800 u

(' Component Actual Required Casing Thickness, Inches 1.125 .216 Nozzle Reinforcement, Square Inches 9.09 1.08 End Cover Thickness, Inches 1.75 1.22 End Cover Reinforcement, Square Inches 5.44 5.185 3/4" Sch. 40 Pipe Thickness, Inches .099 .005 5/8" 0.D. Tubing Thickness, Inches .065 .003 Cooling Coil Thickness, Inches .125 .010 Heat Exchanger Coil- Thickness, Inches -- .025 .006 e

e 0 -

qs , ..++= *.,==e

• .,m =p -s- e ,- 7 i *v y*f a gy ge7 7 .

r+= yew;"r y --- +- ,- , ,,

M-*7- - - * - + =

• s e. --

~,

n ._ _

__ _ __ __ . . _ _.= - __ .

. 4-

3. LOADINGS'ON PUMP 3.1 Nozzle Imads' The nozzle loads applied to the individual pump nozzles and flanges are given in Appendix B.

, 3.2 Internal Pressure Loading The design pressure conditions are 300 psig at 3000 F for the pump. The cooling water design conditions are 150 psig at 200 F.

l O

f- e-A

t. - .

l l

l o

O 9

. e O .

l l

\

l i

. . .:.. , ,-" --* "/

- - . - . . .. . . . .. , . . . - . . - . ~ . . . __ , _ . . , . ,. * . , .

4 4 '2

,g ,.,,%',  ?

%e 2,;j _,-

3 f,., ,

e

, , . . = . , e'.

. g a e

m nm +. - _ . _

4. DETAILED *CALCU1ATIONS 4.1 Nozzle Analysis The discharge and suction nozzle-casing intersection is approximated as a tee and analyzed per ND-3652. The nozzles have a smooth transition into the casing and thus approach a welding tee. However, the contour is not exactly the same as a weiding tee. Thus, to be conservative, a stress intensification factor will be used which is that of a fabricated tee. The mean diameter of the casing is 17.625". The material is SA-351-CF8M with a casing factor of 0.8. The thicknees of the casing is 1.125" minimum.

Fabricated tee: h = 1.125 = .1277 i = .9 = 3.55 ~

^

8.81 (.1277)2/3 Y .

(a) Discharge Nozzle

=

Mx 2600(12) + 1500(20) = 61,200 in-lbs. '

My = 2900(12) = 34,800 in-lbs. -

Z =

3.1416(3.56)2(1.125) = 44.79 la.3

=

Mz 2600(12) + 1500(20) = 61,200 ;i ibs.

M = Q(61200)2 + (34800)2 + (61200)2 = 93,284 in-lbs.

NC-3652.1 Equation (8) ,

i i'

S =

300(17.625) + .75(3.55)(93284) = 6,720 psi < 1.5(.8)(16500) =

4(1.125) 44.79 19,800. psi G  ;

,4 F*** , <' , ,, .g r g

=** ,%**

e-4 ps ~N #

.f ,

~

~ ,: , ,- - ~

=

(2) Suction Nozzle M, =

6700(12) + 2200(20) =

124.400 ina lbs.

=

Ms 6700(12) + 2200(20) =

124.400 in-lbs.

My = 7500(12) = 90,000 in-lbs.

M =

(124400)2 + (124400)2 + (90000)2 = 197,613 in-lbs.

Z =

3.1416(5.56)2(1.125) =

109.26 in.3 NC-3652.1 Equation (8)

S -

300(17.625) + .75(3.55)(197613) '= 5,991 < 19,800 4(1.125) 109.26 4.2 Casing Thickness g The required casing thickness per NC-3324.3 is: --

U -

t = PR S .6P t

P = 300 psig R = 9.375" S =

16500(.8) =

13,200 psi including casting factor of .8 Thus:

t =

300(9.375) = .216" 13200 .6(300)

The actual thickness is ' .125" minium.

e O

/- a. ps - s 4 -y

. ~- . -* ' ' ^ " * =

• * * * * ' " '*

• f e-e** mw j==== y__

. - . . ~-

=# ,_ .

- ~

I l

-y-h 4.3 Nozzle Reinforcement The required nozzle reinforcement (suction nozzle is worst case) per NC-3333 is:

A =

.5dtr d = 10" for suction nozzle tr = .216" frma Section 4.2 Thus:

l A =

.5(10)(.216) = 1.08 Ja.2

. The. metal available per NC-3335 Ls:

A1

=

(t-tr)d t = 1.125" Thus: -

~

A1 =, (1.125 .215)(10) = 9.09 $m.2 .

Therefare, the metal area available for reinforcement is greater than the required area.

4.4 Nozzle Flanges The nozzle flanges are analyzed per ASME Code Appendix II and NC-3647.

The analyses are made by computer and are included in Appendix A.

o O

~

,,..a.., ,- -

. 7._~-------.,., . . - ..~a=~e=  :

d .

v .,,s,..

• #""#~~'

' *t'

.,_ _ . .g , ,

1

, l

. l O 4.5 1 d Cover a d 31 1. i.a1Psis Per ASME Code Appendix II, the bolt loads are:

W1 =

.785G2 P + (2b)(3.14(GmP))

Wm2 = 3.14bGy G= 14.75", mean gasket diameter b = .219", gasket seating width a = 2 for 1/8" asbestos gasket P = 300 psig y = 1600 for 1/8" asbestos gasket Thus:

.=

Wai . 785 ( 14. 75) 2 (300) + 2 ( .219) (3.14) (14. 75) (2') (300) = 63,408 lbs.

, Wm2 s 3.14(.219)(14.75)(1600) = 16,229 lbs. --

There are 16 - 1" bolts, thus the bolt stresses are:

S = 63408 = 7,192 psi operating 16(.551)

=

16229 . = 1,841 psi bolt up 16(.551)

The allowable bolt stresses for SA-193 B8M are 13,600 psi operating and 15,000 psi bolt up.

The required cover thickness per NC-3325.2 is: -

tr = d/CP/S+1.9Whg/Sd3 j d = G = 14.75 l

P = 300 psig S = 18,400 psi for SA-182 F 316 -

i C = .3 bg = .9375" per Appendix II of ASME Code ,

\ '

-+s.. y

~.

' rl l * * , , G

• l

h W =

wm1 = 63,408 lbs.

Thus:

tr

= 14.75 .3(300) + I.9(63408)(.9375) 18400 18400(14.75)3

= 1.22" The actual minimum thickness of the cover is 1.75".

4.6 End Cover Reinforcement The end cover has a cutout as shown below:

_ 8.25" _

2.75" _

~

j( -

O 4 u

i i

.__ 4.25" dia. cutout J

A tr =

1.22" from Section 4.5.

The required area is,.per NC-3332.2:

A =

4.25(1.22) = 5;185 in.2 ,  !

/

O i l

I

,,a +4 4'

• ag

• 5 4 O h ,,

7

,,t .

' - ~' e

_10 h The available area per NC-3335 is:

A1

=

(2.5 - 1.22)(4.25) =

5.44 in.2 The available area is larger than the required area and the cover is adequate.

4.7 Mechanical Seal Assembly Bolting The mech mical seal assembly is bolted to the end cover by 4 - 3/4" diameter studs. The gasket is "0" ring type. Thus, per Appendix II:

Wm1

.785G2p P = 300 psig G = 6" Wal

.785(6)2(300) = 8,478 lbs.

S = 8478 = 7,018 psi -

{; -

4(.302)

The allowable for SA-193 B8M bolts is 13,600 psi.

4.8 Seal Cooling Water Piping This piping and tubing are analyzed per NC-3641.

t = PD 2(SE + .4P)

D = , outside diameter t = required thickness P = 150 psig S = 18,800 psi for SA-312 Tp 316 .

E = .85 for welded pipe or tubing O

' ~

,e

..%' g* p wa. .s -%4. ..% -

e I 4 p W , * - 1.

~'?*** ,

' ' '"r. , n r

• r

. #_ , y m m--

_ _ _ , . - =

• _11 h Thus:

(a) 3/4" Sch. 40 Pipe t = 150(1.05) = .005" 2(18800(.85) + .4(150))

The actual minimum thickness is .099".

(b) 5/8" 0. D. Tubing t = 150(.625) = .003" 2(18800(.85) + .4(150))

The actual thickness is .065".

4.9 Cooling coil The cooling coil is analyzed per the same equation as used in Section 4.8

() except: -

S = 12,000 psi for stainless steel E = .8, casting factor D = 1.25" marf mum t = 150(1.25) = .010" 2(12000(.8) + .4(150))

The actual thickness is .125".

4.10 Heat Exchanger Coil The coil is a 5/8" 0.D. tube. The same equation used in Section 4.8 is used here except the pressure is 300 psig and S = 18400 psi.

t =

300(.625) = .006" '

2(18400(.85) + .4(300))  !

1 l- -

The minimum thickness is at least .025". .

O i i i l \

1 l

. e,-

p g_ .

~ . . ., .: ., ,, .y . . a ,e y.cj .=, .. . . ~. v :- r--- -- ~ ~ . . - - - -

• • *' ~ ~' '

' ' ^~ ~

APPENDIX A -

EXTERNAL FLANCES AND END COVER ANALYSIS (a) Discharge Flange (Internal Pressure Only) 0 -

FLANGE INPUT DATA (SEE ASME CODE FOR NOMENCLATURE) '

A = 12.5 B=6 C = 10.62 N = 12 DB = .75 0 = 7.81443454 AB = .302 T = 1.375 G1 = 1.125 00 = 1.125 M=3 Y = 10000 P = 300 MOM = 0 F=0 TEMP =.300 SMALL'B = .34278273 OPERATING STRESSES, PSI ACTUAL ALLOWABLE LONGITUDINAL HUB STRESS, SH 4554 19800 RADIAL STRESS. SR 5937 13200 TANGENTIAL STRESS. ST 2122 13200 (SH+SR)/2 5246 13200 (SH+ST)/2 3338 13200 OPERATING BOLT STRESS '

8145 BY OTHERS BOLT-UP BOLT STRESS 23209 BY OTHERS FLANGE SHAPE CONSTANTS -

K = 2.08333333 T = 1.47610161 Z = 1.5987526 U = 3.079947 c Y = 2.80275764 V = .550103 -

(.F = .90892 SMALL F = 1 G1/GO = 1 H/HO = 0 FLANGE STRESS FACTORS SMALL D = 18.4101006 SMALL E = .349843471 L (OR LAMBDA) = 1.14454763 EQUIVALENT PRESSURES PE = 0 PFD =.300 FLANGE MOMENT ARMS. INCHES HD= 1.7475 HG= 1.40278273 HT = 1.85639136 FLANGE LOADS, POUNDS.

WM1 = 29520 WM2 = 84109 FLANGE MOMENTS. IN-LBS MD = 14815 MG = 21237 MT = 10958 MD+MG+MT = 47010 .

O -

G 5~

• V4 *.' 'I,*[~

O S I #*- *- I A*, M* *I" * '

_a

-'**? ~,.*E' ~""*

• g . . _ , ._ _.w.- -

, A-2 6 (b) Discharge Flange (Intarnal Pressure + External Nozzle Loads) e FLANGE INPUT DATA (SEE ASME CODE FOR NOMENCLATURE)

A = 12.5 B=6 C = 10.62 N = 12 DB = .75 0 = 7.81443454 AB = .302 T = 1.375 G1 = 1.125 '

00 = 1.125 M=3 Y = 10000 P = 300 MON = 44123 F = 1700 TEMP = 300 SMALL B = .34278273 OPERATING STRESSES, PSI ACTUAL ALLOWABLE LONGITUDINAL HUB STRESS, SH 12642 19800 .

RADIAL STRESS, SR 15958 19800 TANGENTIAL STRESS, ST 5706 19800 (SH+SR)/2 14300 19800 (SH+ST)/2 9174 19800 OPERATING BOLT STRESS 21895 BY OTHERS BOLT-UP BOLT STRESS 23209 BY OTHERS FLANGE SHAPE CONSTANTS (h=2.08333333 T = 1.47610161 I = 1.5987526 U = 3.079947

• Y = 2.80275764 V = .550103 F = .90892 SMALL F = 1 01/00 = 1 H/HO = 0 FLANGE STRESS FACTORS SMALL D = 18.4101006 SMALL E = .349843471 L (OR LAMBDA) = 1.14454763 EQUIVALENT PRESSURES PE = 506.3 PFD = 806.3 FLANGE MOMENT ARMS, INCHES HD= 1.7475 HG= 1.40278273 HT = 1.85639136 FLANGE LOADS, POUNDS ,

WM1 = 79347 WM2 = 84109 i

FLANGE MOMENTS, IN-LBS .

MD = 39821 NG = 57084 MT = 29453 MD+MG+MT = 126358 e

~ - , r ,-m m .93 ~... .jgmy.,y - .v. ;~ y- - ._,

- ~ . .~.-

~s-

- - _ * ;. nrm +p.3.

~ , yp w -

-m , _ , - -

g 4 $

A-3 (c) Suction Flange (Internal Pressure Only)

O ..

FLANGE INPUT DATA (SEE ASME CODE FOR NOMENCLATURE)

A = 17.5 B = 10 C = 15.25 N = 16 DB = 1 O = 12.0428932 AB = .551 T = 1.81 G1 = 1.125 00 = 1.125 M=3 Y = 10000 P = 300 MOM = 0 F=0 TEMP = 300 SMALL B = .353553391 OPERATING STRESSES, PSI

~

ACTUAL ALLOWABLE LONGITUDINAL HUB STRESS, SH 6943 '

19800 RADIAL STRESS, OR 4931 13200 TANGENTIAL STRESS. ST 2469 13200 (SH+SR)/2 5937 13200 (SH+ST)/2 4706 13200 OPERATING BOLT STRESS 6603 BY OTHERS BOLT-UP BOLT STRESS 15165 BY OTHERS FLANGE SHAPE CONSTANTS ,

K = 1.75 T = 1.60463733 Z =.1.96969697 U = 4.00224229 ,_

Y = 3.64204801 V =. 550103 -

{F=.90892 SMALL F = 1 01/G0 = 1 H/HO = 0 FLANGE STRESS FACTORS SMALL D = 30.8845068 SMALL E = .270987587 L (OR LAMBDA) = 1.12085983 EQUIVALENT PRESSURES j PE = 0 PFD = 300 FLANGE MOMENT ARMS, INCHES HD= 2.0625 HG= 1.60355339 HT = 2.1142767 FLANGE LOADS, POUNDS' WM1 = 58219 WM2 = 133695

)

FLANGE MOMENTS, IN-LBS

~

~

MD = 48571 MG = 38589 MT = 22421 MD+MO+MT = 109581 F. p, e 'mq'e . g . 4 [ #

m O'b. + '. _- - " *

-a

• %I M *g'Y l Q M s.6= 8* e.'N ' *7,' f ***D*

N*"

.e"

' ' ~* "-. .

, A . .

(4) Suetion Flange (Internal Pr sure + External Nozzle loads)

FLANGE INPUT DATA (SEE ASME CODE FOR NOMENCLATURE)

A = 17.5 B = 10 C = 15.25 N = 16 DB = 1 0 = 12.0428932 AB = .551 T = 1.81 01 = 1.125

~00 = 1.125 .

M=3 Y = 10000 P = 300 MOM = 113703 F = 2500 TEMP = 300 SMALL B = .353553391 OPERATING STRESSES, PSI ACTUAL ALLOWABLE LONGITUDINAL HUB STRESS, SH 15792 19800 RADIAL STRESS, SR 10741 19800 TANGENTIAL STRESS, ST 5379 19800 (SH+SR)/2 13266 19800 (SH+ST)/2 10586 19800 OPERATING BOLT STRESS 14385 BY OTHERS BOLT-UP BOLT STRESS 15165 BY OTHERS FLANGE SHAPE CONSTANTS -

= 1.75 T = 1.60463733 Z = 1.96969697 U = 4.00224229

'Y = 3.64204801 V = .550103 F = .90892 SMALL F = 1 G1/GO = 1 H/HO = 0 FLANGE STRESS FACTORS SMALL D = 30.8845068 SMALL E = .270987587 L (OR O MDDA) = 1.12085983 EQUIVALENT PRESSURES PE = 353.4 PFD = 653.4 -

FLANGE MOMENT ARMS, INCHES HD= 2.0625 HG= 1.60355339 HT = 2.1142767 FLANGE 1.OADS,~ POUNDS ~

WM1 = 126822 WM2 = 133695 FLANGE MOMENTS, IN-LBS ND = 105805 - MG = 84061- MT = 48841 MD+MG+MT = 238707 g .

\

9

.......;. .,.......~__._7.... - ,.

. ,, ;__,, m , . _ .

_ . . - g _ _ . ., ._ _ .. i z_----..

a v u -- - . . .

@;SGMU M AL LO W uo'.t- .

EARIN C,. ._ .OP._~ UGTioN ..-.;- AN D.. . . - __... .

OJBLE.

~~ - .

I -

4

. p.;. -

~

)lSCHARGE .. .

DUMP . .

. .. .. -. - . ncunz 1. . ..

SPEC.' Mp.". 9763-006=238'.3 '

. . . . . s -

Q

na I, u - .~ ~

. e. .

eM, Fg .

. . . . ,  %~  :-

g .- . .

Q 1o .

21s 9 . . . **

% sn

.f. ..

.. Cs .

. 1) 7.

g9- .pij 1

.. s i .. .~

ig. .

.n....._

.. .c.

4

.._./.._...

%y\3g .ti4 fk.. -

p 9,. %,.

. C..

..n.y ',. i Fy ~F2 Fa Mx My M.7 Mn

..'.' Fx 7500 6700 74co // 3 7os SUCTION ,22oo!25'oo z. zoo!2.75004700 ,

l . /poo[2soo 2aco s 2 coo $250 e.j g 3 DISCHARGE /Soo 1700 /5oo '

MOMENTS IN (FT.-LD.)

FORCES IN (LD.) -

r z.z.3 zf~oc .

i r?co l l cou=,. ,- ve.ra a" ~ -~

c , c o m e cu.r.u., e - mc suu.v -a,e a m -= e n .

. e i.,

=1  %. _

~

[Q % , f -< Q % ,.,,. 7 - ( % ~ J . '

~ * * > ' J 6 % J % cs w J ,c m a y asa ua _ .

f

. i.

wp_ --...- .. . . . . . __

-e .~,,.',.

~

• ""'~~ '

U' 5'M I'~*I'.'^ H ^

Be.r: 9):a n .?.*/.:.1.1. ... f!c Gor.~.,..scr..e - . . . ,  :.n.:vu au. v . ,-

Stvi:t_i?.aci::

llmw. <. 6 air.i- br /?.B-

-~~ .

- - ** si n .< t . ...m-n.

. c. ,. ... ,, ,, ,,, , , , g . y _ n. y .n, ,

l . A~: . _-,. , . m-  ; - -- . - . ,

,z. ..m

~ -

's'***; ,' . , . ,

}

~, - .-

e.

,, _? _ ' .

_ . . _ _