Winterization Design Guide

PROCEDURE NO.

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PROCESS TECHNOLOGY PROCEDURES

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PREPARED BY

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W. McMechen

13 Noveme! 2""3

 APPRO%ED  APPRO%ED BY DEPARTMENT#

PROCESS ENG$NEER$NG

SUB)ECT#

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T,e o Con/en/0 1.0 SCOPE.............................................................................................................................1 2.0 RESPONSIBILITIES........................................................................................................3 3.0 DEFINITIONS.......... DEFINITIONS................... .................. .................. ................. ................. .................. .................. ................... ..........................................5 ................................5 4.0 PROCEDURE............ PROCEDURE..................... .................. ................. ................. .................. .................. .................. ................. ........................................7 ................................7 4.1 General In!r"a#$!n............... In!r"a#$!n........................ ................. ................. .................. .................. .................. .................................7 ........................7 4.2 Pr!#e%#$!n &e#'!().............................................................................................* 4.3 E+al,a#$!n C!n)$(era#$!n)............. C!n)$(era#$!n)...................... .................. ................. ................. .................. .................. ......................10 .............10 5.0 HE-T TR-CING............................................................................................................13 5.1 General................ General......................... ................. ................. .................. .................. .................. .................. ................. .................................13 .........................13 5.2 S#ea" Tra%$n...................... Tra%$n............................... ................. ................. .................. .................. ..........................................15 .................................15 5.3 Ele%#r$% Tra%$n...................... Tra%$n............................... .................. .................. ................. ................. ...................... ...............................1/ ..................1/ .0 PROTECTION OF PIPING......... PIPING.................. ................. ................. .................. .................. .................. .......................... ..............................20 .............20 .1 Un(err!,n( P$$n................ P$$n......................... .................. .................. .................. ..............................................21 .....................................21 .2 Pr!%e)) P$$n -!+e Gra(e..................... Gra(e.............................. .................. ................. ................. .................. ...................21 ..........21 .2.1 P!o/ec/(on G&(e(ne0............................................................................21 .2.2 P!o/ec/(on (/h 4e,/ T!,c(n ,n $n0&,/(on................. $n0&,/(on.......................... ..................... ...............22 ...22 .2.3 P!o/ec/(on (/h O/he! Me/ho0............ Me/ho0..................... ............................ ........................................26 .....................26 .3 a#er P$$n................ P$$n......................... .................. .................. ................. ................. .................. ..........................................30 .................................30 .3.1 P!o/ec/(on G&(e(ne0............................................................................3" .4 U#$l$# P$$n................ P$$n......................... .................. .................. ................. ................. .................. ..........................................3 .................................3 .5 F$re a#er ))#e").................. ))#e")........................... .................. .................. .................. ................. .....................................37 .............................37 7.0 PROTECTION OF EUIP&ENT............ EUIP&ENT..................... .................. .................. .................. ................. ................. ....................... ..................3* ....3* 7.1 Tan6)..................................................................................................................3* 7.2 e))el)................... e))el)............................ .................. .................. ................. ................. .................. .................. .................. ..............................3/ .....................3/ 7.3 P,").................................................................................................................41 7.4 -$r C!!le( Hea# E8%'aner).................. E8%'aner)........................... .................. ................. ................. .................. ..................... ..............43 ..43 7.5 &a%'$ner...........................................................................................................44 *.0 PROTECTION OF INSTRU&ENTS............... INSTRU&ENTS........................ .................. .................. ................. ................. ............................4 ...................4 *.1 General Re9,$re"en#)................. Re9,$re"en#).......................... .................. .................. ................. ................. .................. .........................4 ................4 *.2 Se%$$% Re9,$re"en#).................. Re9,$re"en#)........................... .................. ................. ................. .........................................4* ................................4*

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1.0 SCOPE

Th(0 Th(0 e0( e0(n n &(e &(e cove! cove!0 0 m(n(m& m(n(m&m m ene!, ene!, !e7&( !e7&(!em !emen/ en/0 0 o! e0( e0(n n o co co e,/h e,/he! e! 8!o/ec/( 8!o/ec/(on on o! 8(8(n9 8(8(n9 e7&(8men/ e7&(8men/ ,n (n0/!&men/0. (n0/!&men/0. S8ec((c S8ec((c !e7&(!eme !e7&(!emen/0 n/0 o! 8!o/ec/( 8!o/ec/(on on ev(ce0 o! (n0/,,/(on e/,(0 ,!e no/ cove!e (n /h(0 &(e. The 8&!8o0e o (n/e!(:,/(on (0 /o 8!ov(e , ,c((/; /h,/ (0 o/h o8e!,e ,n m,(n/,(n,e &!(n e /h(c>ne ne009 009 coo! coo!(n, (n,/e0 /e0 /he (n/e (n/e!(: !(:(n (n?(n ?(n0& 0&,/ ,/(on (on !e7&( !e7&(!em !emen/ en/0 0 (/h (/h /he e7&(8m e7&(8men/ en/ 0&88(e! 0&88(e!0 0 ,n !ev(e0 /he P=$D0?v P=$D0?veno eno!! !,(n0 !,(n0 /o en0&!e en0&!e /he co!!ec/ co!!ec/ e8(c/( e8(c/(on on o e7&(8men/ !e7&(!emen/0. !e7&(!emen/0. The Con/!o S;0/em0 En(nee! !ev(e0 /he P=$D0 ,n (n0/!&men/ !,(n0 /o en0&!e /he co!!ec/ e8(c/(on o /he (n0/!&men/ (n/e!(:,/(on?(n0&, (n/e!(:,/(on?(n0&,/(on /(on !e7&(!emen/0.

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P(8(n De0(n e0/,(0he0 /he con(&!,/(on e/,(0 o! (n/e!(:(n 8(8e9 (n(c,/e0 /he (n0&,/(on ,n (n/e!(:(n !e7&(!emen/0 on (/0 !,(n09 ,n ,00(0/0 (n /he (n, !ev(e o (n/e!(:(n ,n (n0&,/(on e0(n. 3.0 DEFINITIONS

P!oce00. The /e!m @P!oce00 (0 &0e /o eno/e /he e8,!/men/9 !o&8 o! en(nee! ho eveo80 /he PFD0 ,n P=$D0. The /e!m P!oce00 co& !ee! /o P!oce00 En(nee!09 P!oce00 S;0/em0 En(nee!0 o! Mech,n(c, S;0/em0 En(nee!0.

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Mech,n(c,. The /e!m @Mech,n(c, (0 &0e /o eno/e /he e8,!/men/9 !o&8 o! en(nee! ho h,ne0 /he 0/,/(c ,n !o/,/(n e7&(8men/. Con/!o S;0/em0. The /e!m @Con/!o S;0/em0 (0 &0e /o eno/e /he e8,!/men/9 !o&8 o! en(nee! ho h,ne0 /he (n0/!&men/,/(on. The o!0 @$n0/!&men/,/(on o! $n0/!&men/ ,!e o/en 0&0/(/&/e o! @Con/!o S;0/em0. P(8(n. The /e!m @P(8(n (0 &0e /o eno/e /he e8,!/men/9 !o&8 o! en(nee! ho h,ne0 /he e0(n o /he 8(8(n ,0 ( ,0 /(e-(n oc,/(on0.

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4.0 PROCEDURE 4.1

General In!r"a#$!n

The !e7&(!emen/ o! (n/e!(:,/(on ,n /he m(n(m&m e0(n ,m(en/ /em8e!,/&!e 0ho& e e0/,(0he (/h /he c(en/ eo!e (n/e!(:(n o! (n0&,/(on (0 ,88(e. The 8!o'ec/ 08ec((e /he!m, (n0&,/(on c!(/e!(, ,n 08ec((c,/(on0 0ho& e o/,(ne eo!e (n0&,/(on /h(c>ne00 !e7&(!emen/0 o! he,/ /!,ce (ne0 ,n e7&(8men/ ,!e ,e /o /he (ne 0&mm,!; o! e7&(8men/ e0c!(8/(on0. $n ,0ence o 8!o'ec/ 08ec((e (n0&,/(on /,e0 o! 16621+".oc

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he,/ /!,c(n ,88(c,/(on0 &0e /he (n0&,/(on /,e0 o! he,/ con0e!v,/(on 8!ov(e (n /he (ne (0/ $n8&/ De0(n G&(e9 PTD-DGS-12. 4.2

Pr!#e%#$!n &e#'!()

The oo(n me/ho0 0ho& e con0(e!e o! co e,/he! 8!o/ec/(on o 8(8(n9 e7&(8men/9 ,n (n0/!&men/0# ,. 16621+".oc

D!,(n(n o 8(8(n ,n e7&(8men/ hen no/ (n 0e!v(ce.

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.

Rec(!c&,/(on ,n ;8,00 (ne0 /o m,(n/,(n 8,!/(, c(!c&,/(on.

c.

A(/,/(on o! (n/e!m(//en/ o /h!o&h (e 8(8(n ,n e7&(8men/.

.

She/e!(n.

e.

$n0&,/(n /o !e/,(n he,/.

.

F&0h(n9 8&!(n9 o! (08,c(n 8!oce00 &( (/h , non!ee:(n &(.

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.

4e,/ /!,c(n /o ,88; he,/ ,n (n0&,/(n /o !e/,(n (/.

h.

4e,/e!0.

(.

U0(n ,n/(!ee:e 0o&/(on0 o! (&/(n 0/!e,m0 (/h (h/e!9 non!ee:(n &(0.

4.3

E+al,a#$!n C!n)$(era#$!n)

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,.

Se,(n9 8&!(n o! (08,c(n 8!oce00 &( (/h non!ee:(n &( o! he,/ /!,c(n h,ve 0(n((c,n/; h(he! (n(/(,9 o8e!,/(n9 ,n m,(n/en,nce co0/0 /h,n o/he! ,/e!n,/(ve (n/e!(:,/(on me/ho0.

.

D!,(n(n o 8(8(n9 (n/e!m(//en/ o9 0e,(n9 8&!(n9 o! (08,c(n 8!oce00 &( (/h non!ee:(n &( !e7&(!e coo!(n,/(on (/h o8e!,/(on, 8!oce&!e0 ,n c,!e& 0eec/(on o oc> v,ve oc,/(on. Boc> v,ve0 0ho& e ,cce00(e9 ,n /he; 0ho& e(m(n,/e e, e0 o! 8e!m(/ (ne0 /o e 0e-!,(n(n. A(/(on,;9 /he; 0ho& e oc,/e 0o /h,/ (e 8(8e o! e7&(8men/ c,n e &; !,(ne o! (08,ce.

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c.

Rec(!c&,/(on (ne0 m,(n/,(n ,c>-o /h!o&h 08,!e 8&m80 o! co e,/he! 8!o/ec/(on o! /o >ee8 /he /em8e!,/&!e o /he 8&m8 ,/ , ce!/,(n eve &e /o mech,n(c, !e7&(!emen/0.

.

$n o!e! /o 8!o/ec/ 8(8(n hen /he connec/e e7&(8men/ (0 (0o,/e9 , m(n(m&m-o con/(n&o&0 ;8,00 (ne c,n e (n0/,e ,!o&n /he e7&(8men/.

e.

$n0&,/(on (0 ,n econom(c, me/ho o! co e,/he! 8!o/ec/(on. A(n he,/ /!,c(n (nc!e,0e0 /he e!ee o 8!o/ec/(on.

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.

$n0&,/(on (/ho&/ he,/ /!,c(n !e7&(!e0 /he &0e o non-e//(n (n0&,/(on9 ce&,! ,00 o! 8e!(/e

5.0 HE-T TR-CING 5.1

General

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5..1.1 Fo! 8!oce00 0;0/em0 /h,/ c,!!; &(0 (/h c!(/(c, /em8e!,/&!e0 8o&! 8o(n/9 !ee:e 8o(n/9 o 8o(n/ ,ove 5"HC9 /he he,/ /!,c(n 0;0/em 0ho& h,ve 0&(c(en/ c,8,((/; /o m,(n/,(n /he &( 3"HC ,ove /he c!(/(c, /em8e!,/&!e. 5..1.2 Fo! 8!oce00 0;0/em0 /h,/ c,!!; &(0 (/h c!(/(c, /em8e!,/&!e0 8o&! 8o(n/9 !ee:e 8o(n/9 o 8o(n/ ,ove /he e0(n co e,/he! /em8e!,/&!e9 &/ e00 /h,n 5"HC9 /he he,/ /!,c(n 0;0/em 0ho& h,ve 0&(c(en/ c,8,((/; /o m,(n/,(n /he &( /em8e!,/&!e 5-15HC ,ove /he c!(/(c, /em8e!,/&!e.

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5..1.3 The he,/ /!,c(n 0;0/em 0ho& h,ve /he c,8,((/; /o he,/ , (ne 0&(c(en/; (/h(n , /eve-ho&! 8e!(o /o 8e!m(/ (n(/(, c(!c&,/(on ,/e! /he (ne h,0 cooe /o /he (n/e! e0(n /em8e!,/&!e9 ( 0/e,m /!,c(n (0 &0e. Eec/!(c, /!,c(n 0;0/em0 ( no/ nee /o mee/ /h(0 !e7&(!emen/ &ne00 o/he!(0e 08ec((e. 5.2

S#ea" Tra%$n

No/e /h,/ 0/e,m /!,c(n (0 no/ /em8e!,/&!e con/!oe ,n9 ( &0e e0.

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.

5.3

o-8!e00&!e 0/e,m 1 ,!  0ho& e &0e on; hen /he conen0,/e (0ch,!e0 /o ,/mo08he!(c 8!e00&!e.

Ele%#r$% Tra%$n

5.3.1 Eec/!(c /!,c(n 0ho& e e0(ne (n ,cco!,nce (/h &(e(ne0 o! , 8,!/(c&,! 8!o'ec/.

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