Important Process Piping Questions

8/9/2019 Important Process Piping Questions

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Important Process piping questions

11 2013 12:57 PM

These are the important things in piping.

Q1. What is the minimum distance to be maintained between two we ds in a pipe!

"nswer: # The thumb ru e is that the minimum distance between ad$acent butt we ds is 1%. &'not( it is ne)er c oser than 1#1*2+. This is supposed , to pre)ent the o)er ap o' -" s. Minimumspacing o' circum'erentia we ds between center ines sha not be ess than / times the pipe wathic ness or 25 mm whiche)er is greater.

Q2. What are We do et and oc o et! "nd where the, are used!

"nswer:#We do et and oc o et are basica , se '#rein'orced 'ittings.

Wedo et is used 'or utt we d branch connection where standard tee is not a)ai ab e due to si erestrictions and the piping is o' critica * high#pressure ser)ice. oc o et is used 'or soc etwe ding branch connection( which re4uire rein'orcing pad.

Q3. What do ,ou mean b, ac eted Piping!

"nswer: # Piping which is recogni ed as pro)iding the most uni'orm app ication o' heat to the process( as we as maintaining the most uni'orm processing temperatures where steam tracing isnot capab e o' maintaining the temperature o' ' uid constant. 6sua , used 'or mo ten su phur(Po ,mers ser)ice.

Q/. What is the basis o' using o' short radius ong radius e bow!

"nswer:# 8ong radius e bow are used 'or sma pressure drop whereas short radius e bow areused 'or high pressure drops. 9or cata ,st ' ows )ar, ong radius e bows are used.


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Q5. orma , where do we use the 'o owing!

". ;ccentric reducers. .


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When 9 uid is 8i4uid G ottom ide.

QH. What is the di''erence between Pipe and Tube!

"nswer: # Pipe is identi'ied b, and thic ness is de'ined b, chedu e whereas Tube isidenti'ied b, ?% its thic ness as WF > rimingham wire gauge or 1*100 inch@.

Q10. 9rom which si e onwards o' pipe is e4ua to ?% o' Pipe!

"nswer: #9rom the si e 1/I and onwards = ?% o' pipe.

Q11. What shou d be the radius o' ong radius e bow!

"nswer:1.5% >Where J%I is the diameter o' the pipe.@

Q12. -ow can ' anges be c assi'ied based on Pipe "ttachment!

"nswer: # 9 anges can be c assi'ied based on pipe attachment as: #

ip G on. : # The ip#on t,pe ' anges are attached b, we ding inside as we as outside. These' anges are o' 'orged construction.

oc et We d. : # The oc et We d ' anges are we ded on one side on ,. These are used 'or sma bore ines on ,.

crewed. : # The crewed#on ' anges are used on pipe ines where we ding cannot be

carried out.


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8ap oint. : # The 8ap oint ' anges are used with stub ends. The stub ends are we ded

with pipes ' anges are ept oose o)er the same.

Weding ec . : # The We ding nec ' anges are attached b, butt we ding to the pipe. These areused main , 'or critica ser)ices where the we d $oints need radiographic inspection.

ind. : # The ind ' anges are used to c ose the ends which need to be reopened.

Deducing. : # The reducing ' anges are used to connect between arger and sma er si es withoutusing a reducer. &n case o' reducing ' anges( the thic ness o' ' ange shou d be that o' the higherdiameter.

&ntegra . : # &ntegra ' anges are those( which are cast a ong with the piping

component or e4uipment.


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". " M; section & : # Du es 'or construction o' power boi er.

. " M; ection && : # Materia s.

Part " G 9errous materia s.

Part G on#9errous materia s.

Part < G peci'ication 'or e ectrodes 'i er wire.

Part % G Properties.


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ASTM Material used in Pipes

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/. ic e tee :# " TM "/20WP8A*WP8E.

ASTM Material &orged &ittings

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ASTM Material Plates

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piping design ,logs

21 2013 0H:02 PM

1 Petro eum communities

http:**www.egpet.net*)b*

2 Piping Info

http:**piping#in'o.b ogspot.in*

3 ociet, o' Piping ;ngineers and %esigners

http:**www.spedweb.com*
http://www.egpet.net/vb/http://l.facebook.com/l.php?u=http%3A%2F%2Fpiping-info.blogspot.in%2F&h=yAQFghpXk&s=1http://www.spedweb.com/http://l.facebook.com/l.php?u=http%3A%2F%2Fpiping-info.blogspot.in%2F&h=yAQFghpXk&s=1http://www.spedweb.com/http://www.egpet.net/vb/


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Piping design tips & guide8 2012

Pdms piping and e4uipments mode ing commands

Posted %ate: 20# u #2011


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p at'orms( re'ineries( and chemica p ants e)er, o''ice has to contribute their ro e on that pro$ectas per their specia t,. &n P%M wor can we done g oba ,. &t means i' design o''ice at 8ondondid some wor on that pro$ect. The other emp o,ees o' Mumbai o''ice can see that wor in themode on ine and wor according ,.

P%M so'tware is produce b, ")i)a industries. PM% is best 3% designing so'tware. We candesign the entire p ant in the P%M . To use the P%M so'tware b, an, compan, the, ha)e to

bu, the numbers o' icense as per their re4uirements.

P%M contains H modu es on which designing can be done in the mode

Piping mode ing;4uipment mode ingtructure modu e-K"< %esign-anger and supports or M%


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11. Pdms is user 'riend , with other so'tware i e


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Q mode= to chec the mode weather it in 'orward mode or bac ward modeQ para= to chec the parameter o' the component%ir tow neCt= to connect the neCt member b, directionQ re'= to chec the re'erence"dd a the pipe within )o ce 500= a pipes to added in the area 500 around the se ectedcomponent.&nc = to inc ude the component 'rom one branch to other branch?ri and p3 is up= to orientate the point 3 o' the tee in up direction?wn= na)igate the owner o' componentQ ang e= to chec the ang e o' the componentQ at e= to chec the ength o' the 'irst tube o' the branch"tt,pe ccnn= comment attachment without dimensions"tt,pe cccc= comment attachment with dimensions"tt,pe CCCC= to set the attachment 'or isometric brea up


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Mar with >nam@ a no 'or ce= to mar the a no e o' e4uipment with name in pdmsQ e)e = to chec the e)e o' the component"Ces at p1= to chec p1 point o' the primiti)e"Ces at p2= to chec p2 point o' the primiti)e

ew c, inder cop, pre) b, n 500= to cop, the pre)ious c, inder b, north direction b, 500

Which M < companies are using P%M

ig engineering procurement and construction companies i e Technip( 9 ou( Perto'ac( umsunghea), industr,( Wor e, person( " er so utions man, more compan, are using these 3% so'twarei e pdms.

P%M uses in the 'o owing industries

1. 9or designing oi and gas pro$ect 'or o''shore p at'orms and onshore re'ineries.2. 9or designing o' the


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?D


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-&P98?W : E50usd http:**www.' owtech.se*indeC.php!option=com content tas =)iew id=/2 &temid=20

?D


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P%MS Commands Piping Modeling11 2013 11:/5 "M

These are the P%MS Piping Commands which are used whi e modeling in t(e P%MS .%esigner can use this commands whi e mode ing in P%MS . These P%MS piping commands are he ps to designer whi e mode ing

1. A es at CE 0 to chec the aCes o' component i e orth( outh( ;ast( West direction

2. Q aCes at ph= to chec the head o' the branch o' the pipe.

3. Q aCes at pt= to chec the tai o' the branch o' the pipe.

/. Q -stu= to show the branch head tube attribute

5. Q 8stu= to show the branch tai tube attribute

A. Q -bore= to chec the arri)e bore or diameter o' the component

7. Q Tbore= to chec the ea)e bore or diameter o' the component


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E. Q pre= to chec the speci'ication o' the particu ar component

H. Q pspec= to chec materia c ass o' the pipe.

10. ew e bow choo a = to create new e bow through command ine

11. ew tee choo a = to create new tee through command ine

12. ew gas et choo a = to create new gas et through command ine

13. ew ' ange choo a = to create new ' ange through command ine

1/. ew o et choo a = to create new o et through command ine

15. 6nc aim a = to remo)e c aim the b, user so other user can wor in that pipe( e4uipment(member(structure.

1A. Fetwor = to re'resh the design mode . "'ter get wor a the change done an, user wishow in the mode .

17. "Ces at hpos= To chec the branch head aCes

1E. "Ces at tpos= To chec the branch tai aCes

1H. Q t e= to chec the ength o' the spoo between the two component

20.


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2H. Q mtCC= to chec the materia o' the component

30. Q mode= to chec the mode weather it in 'orward mode or bac ward mode

31. Q para= to chec the parameter o' the component

32. %ir tow neCt= to connect the neCt member b, direction

33. Q re'= to chec the re'erence

3/. "dd a the pipe within )o ce 500= a pipes to added in the area 500 around the se ectedcomponent.

35. &nc = to inc ude the component 'rom one branch to other branch

3A. ?ri and p3 is up= to orientate the point 3 o' the tee in up direction

37. ?wn= na)igate the owner o' component

3E. Q ang e= to chec the ang e o' the component

3H. Q at e= to chec the ength o' the 'irst tube o' the branch

/0. "tt,pe ccnn= comment attachment without dimensions

/1. "tt,pe cccc= comment attachment with dimensions

/2. "tt,pe CCCC= to set the attachment 'or isometric brea up

/3.


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52. materia o' the component wi not appear in isometric

53. eC conn= connect to neCt component

5/. eC thro ce= a ign the neCt component in same direction

55. Q p3 = to chec the p3 point o' the component

5A. Q pa= to chec arri)e point

57. Q p = to chec the ea)e point

5E. "tt,pe ' ow= to create the ' ow direction attachment

P%MS commands Equipment Modeling

11 2013 11:/1 "M

1. ew site= 'or creating the new site in pdms

2. ew one= 'or creating the new one in pdms

3. ew e4ui= 'or creating the new e4uipment in pdms

/. ew sube= 'or creating the new sub e4uipment in pdms


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)nu3ng steam to pressure7relie atmosp"eric vent

utlet piping rom pressure relie valves s"ould e e uipped it" drains orot"er ise suita ly piped to prevent accumulation o li uids at t"e valve outlet.

Pressure relie valve outlet piping or ater or ot"er li uids s"ould e sel 7draining.

)eparate pressure relie valve lines s"ould e provided or eac" valve disc"argingdirectly to t"e atmosp"ere. n to ers' t"e pressure7relie valve vent piping s"oulde e5tended at least 10 t ( m# a ove t"e nearest orking plat orm it"in a radius


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