WRC INFO WEB

7/21/2019 WRC INFO WEB

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WRC 107 & 297 wizard in CAESAR II

Fuente: https://imagegrafix.wordpress.com/2015/08/04/wrc-107-27-wi!ard-in-caesar-ii/

"hene#er $ressure %esse& or 'eat exchanger (Static ()uipments* no!!&e &oads exceeds the

a&&owa+&e #a&ues pro#ided +, %endors ()uipment manufacturer* or standard proect specific ta+&es

guide&ines* the piping stress professiona& is permitted to use " 107/27 or an, other F(* to

chec3 the stresses at the o!!&e-he&& unction point and chec3 the stresses with a&&owa+&e #a&ues

pro#ided +, odes.

"-107 entit&ed 6oca& tresses in pherica& and ,&indrica& he&&s due to (xterna& oadings was

re&eased in 195 and updated in 17. "-27 was re&eased in 184 and goes under the tit&e of

6oca& tresses in ,&indrica& he&&s due to (xterna& oadings upp&ement to " ;u&&etin o.

107

Assumptions & limitations for usin WRC 107!

<o determine whether " 107 +u&&etin can +e used for &oca& stress chec3ing the fo&&owing geometr,

guide&ines must +e met:

1. o!!&e onnection is assumed to +e a rectangu&ar &oading surface no no!!&e no ho&e* for

circu&ar and &ongitudina& moment &oads. =n short not for no!!&e stress ca&cu&ations.

2. " 107 has no pro#ision for pressure &oads. <he adding of pressure to externa& &oads has

historica&&, +een pro+&ematic for " 107 ca&cu&ations.>. he&& reinforcements are not considered.

4. " 107 does not pro#ide f&exi+i&ities of the intersections

5. d/?@0.>>

9. ?m/<A?-<*/<B50 'ere <A%esse& <hic3ness ?mAmean diameter of #esse&*

7. ot intended for sma&& ?/< ratios.

Assumptions & limitations for usin WRC 107!

<o determine whether " 107 +u&&etin can +e used for &oca& stress chec3ing the fo&&owing geometr,

guide&ines must +e met:

1. =nc&udes effect of no!!&e no!!&e opening and no!!&e thic3ness.

2. ?oes not inc&ude pressure effects. ee " 498*

>. =nc&udes stiffness ca&cu&ations in Fig 5C90 that can easi&, +e used to produce num+ers that

are off +, se#era& orders of magnitude high and &ow* since extrapo&ation on &og-&og p&ot is

re)uired for geometric parameters.

4. he&& reinforcements are not considered.

https://imagegrafix.wordpress.com/2015/08/04/wrc-107-297-wizard-in-caesar-ii/






5. d/[email protected]

9. d/tBA20 and d/t@A100 'ere tAno!!&e thic3ness*

7. ?/<BA20 and ?/<@A2500

8. d/<BA5

. o!!&e must +e iso&ated it ma, not +e c&ose to a discontinuit,* not within 2D?<* on #esse&

and not within 2Ddt* on no!!&e

"aram#t#rs r#$uir#d for p#rformin WRC c%#cin!

<he fo&&owing documents must +e read, with ,ou +efore ,ou start to perform " 107/27

chec3ing:

1. ()uipment ?etai&s/ Eenera& rrangement ?rawing

2. o!!&e detai&s

>. ine &ist

"roc#dur# for WRC anal'sis!

1. tatic ana&,sis of the piping s,stem must +e performed and no!!&e &oads are ca&cu&ated for

&oca& stress ca&cu&ations.

2. oo3 for " icon under ,our ana&,sis ta+. &ic3 here and enter a o+ name in the space

pro#ided.

>. e&ect which one ,ou wou&d &i3e to perform.



4. Ei#e the re)uired input for o!!&e.



5. Ei#e the re)uired input for %esse&



9. =nput #esse& and o!!&e direction cosines =nterna& design pressure and &oad and moments

#a&ues from aesar static ana&,sis output ustained (xpansion and occasiona& as app&ica+&e*.

?efine path of 2 fi&e.



7. =t is recommended to not to change an, parameter under 6ptions ta+. ow c&ic3 on

ana&,sis to read the resu&ts. hec3 the resu&t for " ana&,sis wether it is fai&ed or passed.



ote:- For " 27 =f +e&ow high&ighted fie&d sets to <rue. <he program wi&& compute &oca& stresses

in accordance with ;ritish tandard 5500 nnex E instead of "e&ding esearch ounci& ;u&&etin

27.

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