Process Control Narrative

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Saih Nihayda Depletion Compression Phase 1

Process Control Narrative

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CONTENTS: 1.0 2.0 2.1 2.2 2.% 2.4 %.0 %.1 4.0 4.1 4.2 4.% 4.4 4.9 4.( 4. 4.5 9.0 (.0

OBJECTIVE OBJECTIVE..... ........... ............ ............ ............ ............ ............ ............ ................. ...................... ......................4 ...........4 INTRODUCT INTRODUCTION.. ION....... .......... ........... ............ ............ ............ ............ ............ ............ ............ .................. ............4 4 Backro!n Backro!n".... "......... ........... ............ ............ ............ ............ ............ ............ ............ ............ ............ .............. ........4 4 O#$ective. O#$ective...... .......... .......... ........... ............ ............ ............ ............ ............ ............ ............ ................. .................4 ......4 Pro$ect Pro$ect Descri&tio Descri&tion.... n......... .......... ........... ............ ............ ............ ............. .................. ....................4 .........4 Desin Desin Ca&acit' Ca&acit'..... ........... ............ ............ ............ ............ ............ ............ ............ .................. .................( .....( CONTRO CONTRO) ) P*I)O P*I)O+OP +OP*, *, -ENER -ENER/) /)... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ...... ......( ...( Proces Process s Contro Controll Narrat Narrative ive... ...... ...... ...... ...... ...... ...... ...... ...... ...... ....... ........ ........ ........ ........ ........( ....( PROCE+ PROCE++ + DE+CR DE+CRIPT IPTION ION  CONTRO CONTRO) ) N/RR N/RR/ /TIVE... TIVE...... ...... ....... ....... ... Inlet 3aniol" 3aniol"..... .......... .......... ........... ............ ............ ............ ............ ............ ............ ............ ............ ........... ..... Inlet Inlet +e&ar +e&arato ators rs -V(501 -V(50166 V7(502 7(502... ...... ...... ...... ...... ...... ...... ....... ........ ........ ........ ........ ......5 ..5 Co3&r Co3&ress essor or s!ct s!ction ion 8ea" 8ea"er er &re &ress! ss!re re contr controll oller.. er...... ........ ........ ........11 ....11 +!ctio +!ction n Coole Coolers rs -E7( -E7(511 51166 E7(521 E7(521  E7(5% E7(5%1.. 1..... ....... ........ ........ ........ .......1 ...12 2 Co3&r Co3&ress essor or +!ctio +!ction n +cr! +cr!## ##ers ers -V7(5 -V7(5116 116 V7(521 7(521  V7(5%1 7(5%1 1% Booste Boosterr Co3&res Co3&ressor sors s -:7(5 -:7(5106 106 :7(5 :7(520 20  :7(5 :7(5%0 %0... ...... ...... ....... .......1 ...19 9 Co3&r Co3&ress essor or /ter /ter Cooler Coolers s -E7(5 -E7(5126 126 E7(522 E7(522  E7(5% E7(5%2.. 2...... ......1 ..1 Con"ensat Con"ensate e +e&arato +e&aratorr -V7(50% -V7(50%..... .......... ........... ............ ............ ............ ............ ..........1; ....1; RE
ABBREVATIONS //D) CCR CE+D CO+ CP+D DC+ EPC E+D
/verae /nn!al Dail' )oa" Central Control Roo3 Controlle" E3erenc' +8!t"o>n Central O3an as +'ste3 Controlle" Process +8!t"o>n Distri#!te" Control +'ste3 Enineerin Proc!re3ent  Constr!ction E3erenc' +8!t"o>n +c8e3e Process +c8e3e Prora33a#le )oic Control Process +8!t"o>n +ae!ar"in +'ste3 +ai8 Ni8a'"a De&letion Co3&ression +ai8 Ni8a'"a as Plant +ai8 Ni8a'"a Oil station +ai8 Ni8a'"a +8!ai#a +ai8 Ra>l Oil +tation Unit Control Panel

1.0 OBJECTIVE T8e o#$ective o t8is "oc!3ent is to &rovi"e a Process Control Narrative o t8e De&letion Co3&ression ill #e ke&t !& to "ate "!rin
2.0 INTRODUCTION 2.1 Background T8e +ai8 Ni8a'"a Dee& it8in t8e cl!ster o non7 associate" as @el"s in t8e central O3an. T8e @el" is sit!ate" 25 k3 nort8 east o t8e +ai8 Ra>l Central Processin Plant an" 20 k3 >est o t8e Aarn /la3 Oil station. T8e @el" 8as #een &ro"!cin via t8e +ai8 Ni8a'"a as Plant -+NP since A1 2009. Base" on t8e c!rrent orecasts t8e reservoir &ress!re >ill #ein to "ecline #elo> t8e c!rrent inlet &ress!re o t8e +NP >it8in t8e ne?t ( 'ears. /t t8is &oint6 t8e 1st +tae o +ai8 Ni8a'"a De&letion Co3&ression -+NDC7 1 Pro$ect >ill #e re!ire" to "eliver t8e as ro3 t8e >ells to t8e re!ire" inlet &ress!re o t8e +NP. 2.2 Objc!"# T8e &rinci&al o#$ective o t8e +NDC71 Pro$ect is to receive a#o!t 21 ==+C=D as an" t8e acco3&an'in con"ensate6 at &ress!res ro3 0 to %5 #ara6 se&arate t8e con"ensate6 co3&ress t8e as an" "eliver co3&resse" as to t8e e?istin as Plant et as Cooler E7 (212 at t8e con"itions 3atc8in "esin o t8e e?istin as &lant. T8e +NDC71 involves installation o % nos o as co3&ressor !nits at !&strea3 o t8e e?istin inlet >et as cooler E7(212. T8is >ill ena#le t8e +NP to contin!e e?&ortin to t8e Central O3an as +'ste3 -CO+6 a s!staina#le =a?i3!3 /nn!al Dail' )oa" -=/D) o 20 ==+C=D as. T8e &lanne" on7strea3 "ate is Jan!ar' 201%. Base" on t8e 2005 as B!siness Plan6 t8e +NP is to &ro"!ce an /nn!al /verae Dail' )oa" -//D) o 12 ==+C=D ro3 t8e +N Dee& reservoirs -Barik6 =irat  /3in6 >it8 a &otential !&si"e o 14 ==+C=D. *o>ever6 in eit8er case t8e co3&ression acilit' 3!st 3eet =/D) at 20 ==+C=D >8ile #ein ca&a#le o t!rn"o>n to ( ==+C=D at 8i8 ener' eicienc'. 2.$

%rojc! D&cr"'!"on

T8e +NDC71 acilit' >ill #e installe" "o>nstrea3 o t8e Plant Inlet =aniol" an" t8e !&strea3 o et as Cooler E7(2126 #'&assin t8e t>o e?istin +NP Inlet +e&arators V7(21112. U&strea3 an" "o>nstrea3 acilities re3ain !naecte" #' t8is &ro$ect e?ce&t or tie7ins.

In or"er to 3eet t8e a#ove &ro$ect re!ire3ents6 a %7co3&ression train con@!ration 8as #een selecte" or t8e +NDC716 >it8 eac8 train #ein a#le to "eliver6 at t8e earl' stae o o&eration6 90F o =/D) -10 ==+C=D T8e +NDC71 Pro$ect >ill co3&rise t8e ollo>in 3a$or &rocessin e!i&3entG Inlet +e&arators -V7(5016 V7(502 +!ction Coolers -E7(5116 E7(521  E7(5%1 +!ction +cr!##ers -V7(5116 V7(521  V7(5%1 Booster Co3&ressor &ackae !nits -/7(51020%0 consistin o co3&ressors -:7(5106 :7(520  :7(5%0 Co3&ressor /tercoolers -E7(5216 E7(522  E7(5%2 Con"ensate +e&arator.-V7(50% •

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T8e overall sc8e3atic o &rocess e!i&3ent line!& o t8e ne> +NDC71 acilit' is s8o>n in t8e .
+NDC71 acilit' nee" to &eror3 t8e ollo>in as an" li!i" &rocessin !nctionsG 1.

E!all' s&lit t8e @el" &ro"!ction ro3 t8e Plant Inlet =aniol" #et>een 2 ne> Inlet +e&arators6 #' !se o s'33etrical &i&in an" a!to3atic control.

2.

+e&arate #!lk li!i"s ro3 t8e inlet H!i" in t>o Inlet +e&arators an" sen" >ater an" con"ensate to t8eir res&ective "estinations in t8e +NP &lant.

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/&&ortion t8e se&arator as e!all' a3on r!nnin co3&ression trains6 eac8 train consistin o a +!ction Cooler6 +!ction +cr!##er6 Booster Co3&ressor an" /ter cooler.

Eac8 train >ill #e &eror3in t8e ollo>in !nctionsG a. Cool6 #' 3eans o an air coole" +!ction Cooler6 t8e inco3in as to 3ini3!3 ac8ieva#le #!t not less t8an %0oC to avoi" 8'"rate or3ation. #. +e&arate6 in a +!ction +cr!##er6 t8e con"ense" li!i"s >it8 ;;F eicienc' an" sen" t8e li!i"s to a ne> co33on con"ensate se&arator. c. Co3&ress t8e as ro3 +!ction +cr!##er to a &ress!re s!icient or t8e +NP to 3eet t8e 20 ==+C=D as o7take ro3 t8e &lant. ". Cool t8e co3&resse" as in an ater cooler to 100 oC an" "eliver it to t8e inlet o e?istin as &lant Inlet Cooler E7(212.

2.(

4.

Collect all li!i"s ro3 +!ction +cr!##ers in a ne> Con"ensate +e&arator o&eratin at a#o!t 4 #ar #elo> o t8e co33on co3&ressor s!ction 3aniol" o&eratin &ress!re to 3ini3ie Has8in an" se&arate t8e con"ensate.

9.

Dis&ose o t8e Con"ensate +e&arator strea3s into t8e c!rrent as &lant tie7in &oints as ollo>sG sen" Has8e" as to o as Pi&eline6 con"ensate to Con"ensate Cooler E7(21%6 an" &ro"!ce" >ater to Pro"!ce" >ater "eassin vessel V7(214.

D&"gn Ca'ac"!) T8e ta#le #elo> s!33arises t8e e?istin +NP "esin ca&acities

E*"&!"ng S)&!+

Ca'ac"!)

+ai8 Ni8a'"a as Plant K as t8ro!8&!t +ai8 Ni8a'"a as Plant K Con"ensate &ro"!ction +ai8 Ni8a'"a as Plant 7 ater &ro"!ction

20 == +3 %" 10000 3%" 1000 3 %"

45L E?&ort as Pi&eline -+NP745L Pi&eline 12L Inter@el" Con"ensate Pi&eline -+NP7 CPP 4L ater +NP7+NO+ Pi&eline 4L O as Pi&eline +NP7+NO+ Pi&eline

20 == +3%" 10000 3%" 1000 3%" 0.01( == +3 %"

$.0 CONTRO, %-I,OSO%- /ENERA, $.1

%roc&& Con!ro Narra!"#

T8e &8iloso&8' s8all a"8ere to t8e re!ire3ents o!tline" in t8e ollo>in "oc!3entsG •

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+ai8 Ni8a'"a De&letion Co3&ression P8ase716 Basis or Desin -Re71 O700.2045;7 !i"elines or &re&arin &rocess control  IP< narratives Version72.0

Process control reers to a!to3atic 3ani&!lation o t8e &rocess in or"er to 3eet &rocess o#$ectives -e.. &ro"!ction rate6 &ro"!ct !alities an" saet'. T8e 3ain &!r&ose o t8e Process Control Narrative isG •

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Ens!rin an a&&ro&riate an" >ell7consi"ere" !nctional "esin o t8e &rocess control. Esta#lis8in a "esin "oc!3ent to #e !se" orG 1. Control  /!to3ation to "evelo& t8e !nctional anal'sis an" to "e@ne t8e o&eratin &8iloso&8'. 2. eneral &rocess control as&ects an" #ackro!n"

Classes o &rocess control can #e "istin!is8e" as ollo>sG I.

Re!lator' control -kee& &rocess varia#les at stea"' &oint o o&eration

II.

Interate" Ca&acit'  /ntis!re Control -
III.

O&ti3iin control -a"$!sts &rocess varia#les in or"er to ac8ieve o&ti3!3 &oint o o&eration

IV.

Constraint Control -Press!re constraint or >ell 8ea"s an" co3&ressor s'ste3s 6 Po>er constraint or co3&ressor 3otor

V.

+ae!ar"in Control -#rin t8e &rocess to sae state >8en a &otential 8aar" >it8 +I) level )1 is "etecte"

VI.

+e!ence Control or a!to3ation o start7!& an" s8!t"o>n.-one &er3issive ro3 co3&ressor &ackae an" ot8er ro3 3ain s'ste3

T8e !nctional "esin o &rocess control relates to nor3al o&eratin 3o"es -or contin!o!s &rocesses essentiall' re!lator' controls an"6 i a&&lica#le6 o&ti3iin controls an" is &eror3e" in &arallel >it8 t8e P<+s6 PE<+s an" "oc!3ente" in t8is Process Control Narrative.

(.0 %ROCESS DESCRI%TION 3 CONTRO, NARRATIVE (.1

In! +an"4od Reer t8e ollo>in PE<+G 1 +N724;7PM72%(97(500170001 2 +N717(21%7001

(.1.1 %roc&& D!rin +NDC71 +tation co33issionin an" transition &erio"6 #ot8 en"s o t8e 3aniol" >ill #e active6 s!&&l'in as si3!ltaneo!sl' to #ot8 +NDC71 an" +NP acilities. +ince +NP &rocess re!ires inlet &ress!res >ell in e?cess t8e !&&er o&eratin li3it o t8e +NDC71 inlet &ress!re6 a &ress!re let "o>n valve -(5PCV7000( is &rovi"e" in t8e co33on o!tlet 8ea"er o t8e inlet se&arators -V7(50102. D!rin t8e transition6 t8e let "o>n valve >ill #e 3o"!late" #' a &ress!re controller installe" on co33on inlet 8ea"er o co3&ressor !nits. +NDC71 Co3&ressors >ill o&erate at constant s&ee" "!rin t8e transition &erio". T8e 8i8 &ress!re constraint controller -(5PIC/7 000% to t8e >ell 8ea" >ill re3ain inactive "!rin transition &erio". T8e e?istin 8i8 &ress!re constraint controller -(2PIC/710% >ill &rotect t8e Ho> lines6 3aniol" an" inlet &i&in. Past t8e transition &erio"6 t8e entire @el" &ro"!ction >ill ee" t8e +NDC71 n valve -(5PCV7000( >ill #e #'&asse". T8e control o +NDC71 inlet &ress!re ro3 no> on >ill #e ro3 t8e &ress!re controller -(5PIC/7000% on t8e ee" line to inlet se&arators. (.2

In! S'ara!or& /V56017 V85602 Reer t8e ollo>in PE<+. 0001

1 +N724;7PM72%(97(50027

2 +N724;7PM72%(97(500270002 (.2.1 %roc&& Plant Inlet +e&arators are t8e @rst co3&onent o +NDC71 ill o&erate as vertical %7&8ase se&arators. T8e !&strea3 s'ste3 consists o as &ro"!cin >ells6 &ro"!ction at8erin Ho> lines6 an" Plant Inlet =aniol". T8e Plant Inlet =aniol" >ill #e e?ten"e" on its to& an" a ne> 8ea"er >ill #e installe" to "irect >ell &ro"!ction to +NDC71 area. T8e s'33etrical inlet &i&in is consi"ere" or #ot8 inlet se&arators.

/n a""itional 3eas!re or Ho> #alancin6 a Ho> control valve an" a Ho> trans3itter are &rovi"e" in eac8 o t8e Inlet +e&arator as o!tlet lines. Eac8 o t8e inlet se&arators is a vertical %7&8ase se&arator >it8 an inlet +c8oe&entoeter6 3ist3at6 s>irl"eck an" &late &ack. T8e se&arator is also "esine" to receive transient li!i" Ho> -sl!s ro3 t8e #!lk 8ea"er. T8e control narrative or one inlet se&arator V7(501 is "isc!sse" in t8is "oc!3ent an" t8e sa3e is a&&lica#le or t8e ot8er inlet se&arator V7(502. (.2.2 Condn&a! ,# Con!ro ,og"c (5)IC/7010B7Con"ensate level controller (5 controller (.2.2.1

Objc!"#

To control con"ensate level in t8e se&arator. (.2.2.2

9unc!"ona D&cr"'!"on

T8e V7(501 con"ensate level control is &eror3e" #' (5)IC/7010B -3aster controller. To ac8ieve #etter control6 level control is casca"e" to slave Ho> controller (58ic8 re!lates t8e control valve (58ic8 is locate" !&strea3 o (5
O'ra!"ona and I+'+n!a!"on A&'c!&

I. S!ar!8u' D!rin start7!& t8e controller s8all #e in 3an!al 3o"e. *o>ever o&enin o (5UV70101 >ill "rive (5ill #e &!t in 3an!al 3o"e. Valve o&enin an" closin >ill #e "one 3an!all'. IV. Su! do;n D!rin t8e P+D or E+D o t8e inlet se&arator6 !&strea3 P+D valve -(5UV70101 >ill close an" activates (5M+70101 >8ic8 >ill close (5
V. O'ra!or "n!r4ac DC+ ra&8ic "is&la's >ill s8o> all real ti3e &rocess "ata. VI. Cacua!"on No calc!lations are re!ire". VII. S'c"a con&"dra!"on None. VIII. -"&!or) None. (.2.$ a& controller (5,701017)o> selector (.2.$.1

Objc!"#

To control t8e Ho> o as &assin t8ro!8 inlet se&arator. (.2.$.2


T8e V7(501 o!tlet as Ho> control is &eror3e" 3ainl' #' (5 selector (5,70101. T8e lo> selector also receives sinal ro3 8i8 con"ensate level controller (5)IC/7010/. T8e o!t&!t o lo> selctor sinal re!lates t8e control valve (5 control valve (5 controller (5 sinal an" it >ill start controllin (5 set &oint6 t8en t8e control is 8an"e" over to Ho> controller (5

S!ar!8u' D!rin start7!& t8e controller s8all #e in 3an!al 3o"e an" ater sta#ilisation o o&eration6 it >ill #e &!t in t8e a!to 3o"e.

II.

Nor+a S!ad)8S!a! trans3itter is trackin t8e act!al val!e.

III.

Cr"''d +od o'ra!"on In case o in&!t sinal ail!re6 t8e Ho> cotroller >ill #e &!t in 3an!al 3o"e. Valve o&enin an" closin >ill #e "one 3an!all'.

IV.

Su! do;n D!rin station E+D6 (5ill #e o&ene".

V.

O'ra!or "n!r4ac DC+ ra&8ic "is&la's >ill s8o> all real ti3e &rocess "ata.

VI.

Cacua!"on No calc!lations are re!ire".

VII.

S'c"a con&"dra!"on None.

VIII.

-"&!or) None.

(.2.( %roducd =a!r ,# Con!ro ,og"c (5)IC/7010%7 Pro"!ce" >ater level controller (.2.(.1

Objc!"#

To control t8e &ro"!ce" >ater -interace level in t8e inlet se&arator. (.2.2.(


Inlet se&arator -V7(501 &ro"!ce" >ater level control is &eror3e" #' (5)IC/7010% >8ic8 re!lates t8e control valve (5)CV7010% locate" on &ro"!ce" >ater o!tlet line. O&enin an" closin o (5)CV7010% is linke" to t8e o&eninclosin o P+D valve -(5UV70102 locate" !&strea3 o (5)CV7010%. On 8i8 interace level6 t8e li!i" level s>itc8 (5)+70104 >ill re!late corrosion in8i#itor in$ection &!3&s P7(%2/B to in$ect corrosion in8i#itor to con"ensate 8ea"er to avoi" corrosion. I t8e interace level increases t8en one o t8e corrosion in8i#itor in$ection &!3&s -P7(%2 /B is starte" a!to3aticall' an" sto&&e" >8en t8e level co3es "o>n. (.2.2.> I.


S!ar!8u' D!rin start7!& t8e controller s8all #e in 3an!al 3o"e. *o>ever o&enin o (5UV70102 >ill "rive (5)CV7010% in a!to 3o"e.

II.

Nor+a S!ad)8S!a! )evel trans3itter is trackin t8e act!al val!e.

III.

Cr"''d +od o'ra!"on In case o in&!t sinal ail!re t8e level cotroller >ill #e &!t in 3an!al 3o"e. Valve o&enin an" closin >ill #e "one 3an!all'.

IV.

Su! do;n D!rin t8e P+D or E+D o t8e inlet se&arator 6 !&strea3 P+D valve -(5UV70102 >ill close an" activates (5M+70102 >8ic8 >ill close (5)CV7010%.

V.


VI.


VII.


VIII.

-"&!or) None.

(.$

Co+'r&&or &uc!"on adr 'r&&ur con!ror

Reer t8e ollo>in PE<+G 1. +N724;7PM72%(97(500%70001 (.$.1 %roc&& T8e as leaves Inlet +e&arators an" s8all #e ro!te" to s!ction scr!##ers V7(511 (521(5%1 t8ro!8 s!ction coolers (.$.2 Suc!"on adr 'r&&ur Con!ro ,og"c (5PIC/7000(7Co3&ressor +!ction co33on 8ea"er &ress!re. (.$.2.1

Objc!"#

D!rin transition &erio"6 t8e inlet 3aniol" &ress!re is 100 #ar an" co3&ressor can not #e starte" >it8 s!c8 a 8i8 s!ction &ress!re. T8ereore (5PIC/7000( an" (5PCV7000( >ill #e !se" to control co3&ressor co33on s!ction 8ea"er &ress!re in or"er to ac8ieve t8e re!ire" &ress!re at co3&ressors s!ction -i.e. a&&ro?i3atel' 0 #ar. (.$.2.2


D!rin t8e transition &erio"6 t8e s!ction &ress!re 8ea"er controller (5PIC/7000( re!lates t8e &ress!re let "o>n valve (5PCV7000(. (5PIC/7000( also act!ates cree& valve -(5U+V70014 locate" on co33on s!ction 8ea"er. D!rin P+D o co3&ressors6 t8ere is &ossi#ilit' o rise o &ress!re in t8is 8ea"er. (5PIC/7000( 3aintains t8e &ress!re o s!ction 8ea"er #elo> 0 #ar >it8 t8e 8el& o cree& valve. 8en t8e &ress!re on t8e co33on s!ction 8ea"er is 3ore t8an 0 #ar6 t8e &ress!re controller s8all o&en t8e cree& valve (5U+V7

00146 locate" on t8e co33on 8ea"er an" releases e?cess as to Hare 8ea"er. 8en t8e co33on 8ea"er &ress!re reac8es (9 #ar6 t8e &ress!re controller s8all close t8e cree& valve. (.$.2.$


I. S!ar!8u' D!rin start7!& t8e controller s8all #e at 3an!al 3o"e. T8e &ress!re let"o>n valve (5PCV7000( s8all #e o&ene" 3an!all'. T8en t8e controller >ill #e c8ane" to /UTO 3o"e. II. Nor+a S!ad)8S!a! D!rin nor3al o&eration6 t8e controller s8all #e in a!to 3o"e an" re!lates t8e &ress!re let"o>n valve. III. Cr"''d +od o'ra!"on No s&ecial &rovisions are re!ire" IV. Su! do;n No s&ecial &rovisions are re!ire". V. O'ra!or "n!r4ac DC+ ra&8ic "is&la's >ill s8o> all real ti3e &rocess "ata. VI. Cacua!"on No calc!lations are re!ire". VII. S'c"a con&"dra!"on None. VIII. -"&!or) None. (.(

Suc!"on Coor& /E856117 E85621 3 E856$1

Reer t8e ollo>in PE<+G 2. +N724;7PM72%(97(501070001 %. +N724;7PM72%(97(502070001 4. +N724;7PM72%(97(50%070001 T8e control narrative or a s!ction cooler E7(511 is "isc!sse" in t8is "oc!3ent an" t8e sa3e is a&&lica#le or t8e ot8er s!ction coolers -E7(521  E7(5%1. (.(.1 %roc&& T8e as leaves Inlet +e&arators at a#o!t 100 °C an" re!ires coolin #eore it is co3&resse". T8is is acco3&lis8e" in an air7coole" s!ction cooler. T8e cooler consists o 4 #a's6 eac8 8o!sin 2 #!n"les

an" coole" #' 2 ans6 #ot8 on varia#le s&ee" "rives. It is t8e "esin intent to cool t8e as #!t not less t8an %0 °C to &revent 8'"rate or3ation. Cooler o!tlet H!i" containin var'in a3o!nts o con"ense" >ater an" 8'"rocar#ons t8en &rocee"s to s!ction scr!##er -V7(511. (.(.2 Suc!"on Coor Ou!! T+'ra!ur Con!ro ,og"c (5TIC/711027+!ction Cooler O!tlet Te3&erat!re (.(.2.1

Objc!"#

To control t8e s!ction cooler ans in or"er to ac8ieve t8e re!ire" te3&erat!re o t8e as at t8e o!tlet o t8e inlet se&arator. (.(.2.2


T8e onl' &ara3eter re!irin control is t8e o!tlet te3&erat!re. 8en o!tlet te3&erat!re o t8e as is at 40 °C6 #ot8 t8e cooler ans s8all #e r!nnin at t8e 3ini3!3 &ossi#le s&ee". I t8e cooler o!tlet te3&erat!re re"!ces !rt8er to a te3&erat!re %9 °C6 (5TIC/71102 >ill sto& one o t8e r!nnin an an" at t8e te3&erat!re %0 °C6 it >ill also sto& t8e ot8er an. T8e o!tlet te3&erat!re starts risin "!e to sto&&in o #ot8 ans. 8en o!tlet te3&erat!re o t8e as is at %9 °C6 (5TIC/71102 >ill start @rst sto&&e" an an" at t8e te3&erat!re 40 °C6 it >ill also start t8e ot8er an. (.(.2.$


I. S!ar!8u' D!rin start7!& t8e lo> lo> te3&erat!re tri& -(5T/7110% s8all #e overri""en. T8e te3&erat!re controller (5TIC/71102 i3&le3ente" in t8e DC+ is con@!re" >it8 a "ea!lt settin >it8 0.0 F o!t&!t an" >ill onl' transer to /UTO 3o"e an" local set &oint on 8avin receive" a re!est to start t8e @n ans ro3 t8e start7!& se!ence II. Nor+a S!ad)8S!a! Te3&erat!re trans3itter >ill control t8e varia#le s&ee" "rives o t8e cooler ans in or"er to kee& t8e o!tlet te3&erat!re o t8e as #et>een (0 to %0 "e C. III. Cr"''d +od o'ra!"on Te3&erat!re trans3itter >ill #e &!t in 3an!al 3o"e. +tart  sto& o t8e cooler ans >ill #e "one 3an!all'. IV. Su! do;n No s&ecial &rovisions are re!ire". V. O'ra!or "n!r4ac

DC+ ra&8ic "is&la's >ill s8o> all real ti3e &rocess "ata. VI. Cacua!"on No calc!lations are re!ire". VII. S'c"a con&"dra!"on None. VIII. -"&!or) None. (.>

Co+'r&&or Suc!"on Scrubbr& /V856117 V85621 3 V8 56$1

Reer t8e ollo>in PE<+G 1. +N724;7PM72%(97(501070001. 2. +N724;7PM72%(97(502070001. %. +N724;7PM72%(97(50%070001. (.>.1

%roc&&

T8e control narrative or co3&ressor s!ction scr!##er V7(511 is "isc!sse" in t8is "oc!3ent an" t8e sa3e is a&&lica#le or t8e ot8er s!ction scr!##ers -V7(521  V7(5%1. Co3&ressor +!ction +cr!##er is a vertical 27&8ase se&arator >8ic8 receives H!i"s ro3 cooler o!tlet6 se&arates t8e as an" li!i". T8e #!lk li!i" is sent to t8e co33on con"ensate se&arator -V7(50%. as leaves t8e scr!##er to& an" &rocee"s to t8e Booster Co3&ressor -:7(510. T8e scr!##er is "esine" in accor"ance >it8 DEP to ac8ieve li!i"s re3oval #etter t8an ;;F o t8e inlet li!i" vol!3e6 an" is e!i&&e" >it8 a +c8oe&entoter6 3ist3at6 s>irl"eck6 an" secon" 3ist3at. -+=+=. (.>.2 ,"?u"d ,# Con!ro ,og"c (5)IC/711017)i!i" level controller (.>.2.1

Objc!"#

To control li!i" level in t8e s!ction scr!##er. (.>.2.2


T8e co3&ressor s!ction scr!##er -V7(511 li!i" level control is &eror3e" #' (5)IC/71101 >8ic8 re!lates t8e control valve (5)CV71101 locate" on li!i" o!tlet line. O&enin  closin o (5)CV71101 is linke" to t8e o&eninclosin o P+D valve -(5UV71120 locate" !&strea3 o (5)CV71101.

(.>.2.$ I.


S!ar!8u' D!rin start7!&6 t8e controller s8all #e in 3an!al 3o"e. *o>ever6 o&enin o (5UV71120 >ill "rive (5)CV71101 to a!to 3o"e.

II.


III.


IV.

Su! do;n D!rin t8e P+D or E+D o t8e s!ction scr!##er6 !&strea3 P+D valve -(5UV71120 >ill close an" activates (5M+7 1140 >8ic8 >ill close (5)CV71101.

V.


VI.


VII.


VIII.

-"&!or) None.

(.5

Boo&!r Co+'r&&or& /@856107 @85620 3 @856$0

Reer t8e ollo>in PE<+G 1. +N724;7PM72%(97(501070002 (50107000%

(.+N724;7PM72%(97

2. +N724;7PM72%(97(502070002 (50207000%

.+N724;7PM72%(97

%. +N724;7PM72%(97(50%070002 (50%07000%

5.+N724;7PM72%(97

4. +N724;7PM72%(97(500%70001 9. +N724;7PM72%(97(500470001 (.5.1 %roc&& as ro3 t8e s!ction scr!##er is ro!te" to co3&ressor. Bet>een start7o7r!n to en"7o7r!n con"itions or P8ase +NDC716 Booster Co3&ressor >ill receive ro3 a#o!t 10.9 to  ==+C=D as at &ress!res ranin ro3 0 to %5 #ara an" co3&ress it to a &ress!re

re!ire" at +NP inlet or 3eetin its e?&ort as taret. T8e 3ost severe "isc8are te3&erat!re at t8e en"7o7r!n is esti3ate" to #e a#o!t 19°C. T8e co3&ressor >ill #e a sinle stae centri!al t'&e an" >ill #e "riven #' a s'nc8rono!s electrical 3otor T8e s!ction &ress!re o t8e co3&ressors >ill "e&en" on t8e s!&&l' &ress!re at t8e Plant Inlet =aniol"6 >8ic8 >ill #e controlle" as "escri#e" in +ection 4.1.1. D!rin initial &8ase o o&eration6 as inlet &ress!re >ill #e 8i8 eno!8 or t>o co3&ressor o&eration6 >it8 t8e t8ir" on stan"#'6 res!ltin in a 3arke" i3&rove3ent in availa#ilit' an" &ro"!ction eicienc'. Co3&ressor control >ill 8ave an interate" ca&acit'  antis!re control. Eac8 !nit >ill 8ave an in"e&en"ent antis!re control interate" >it8 overall ca&acit' control or t8e entire trains. T8e interation >ill ens!re t8e t!rn"o>n an" sta#ilit'. Co3&ressor >ill 8ave a "r' as seal s'ste36 >it8 &rocess as or &ri3ar' seal an" instr!3ent air as se&aration as or secon"ar' seal. Pri3ar' seal vents >ill #e ro!te" to t8e e?istin +NP /P ill #e &rovi"e" ro3 co3&ressor "isc8are6 >it8 a col" start s!&&l' ro3 !el as line. Eac8 co3&ressor >ill 8ave its o>n seal as treat3ent !nit consistin o a 8eater6 &ress!re let"o>n valves an" a @lter. T8e control narrative or a Booster Co3&ressor :7(510 is "isc!sse" in t8is "oc!3ent an" t8e sa3e is a&&lica#le or t8e ot8er #ooster co3&ressors -:7(520 an" :7(5%0. (.5.2 Con!ro& (.5.2.1

Con!ro o4 Co+'r&&or S)&!+&

Eac8 co3&ressor control consists o t8e ollo>inG /ll % staes o +tart7!&6 i.e. +tart!& o /!?iliaries6 Press!riin6 an" +tart!& o co3&ressor K &eror3e" #' a!to3atic start se!ence6 >it8 eac8 stae initiate" ro3 "o>n valves. Control o a!?iliaries6 vi. s!ction scr!##er6 coolers6 inlet an" o!tlet E+D valves6 l!#e oil6 an" seal as s'ste3. Nor3al +8!t"o>n K /!to3atic s8!t"o>n se!ence initiate" ro3
• •

•

•

(.5.2.2

Con!ro o4 Co+'r&&or ac"n

T8e =ac8ine control consists o t8e ollo>in !nctionsG +&ee" -Ca&acit' control >it8 3an!al overri"e Interate" Ca&acit'  /nti7s!re control s'ste3 Co3&ressor &eror3ance 3ac8ine 3onitorin -&ress!re6 te3&erat!re6 vi#ration an" s&ee" +tart7!&+to& se!ence Control o Utilities )!#e oil control s'ste3 +eal as control s'ste3 >it8 te3&erat!re controller. Re3ote 3onitorin o co3&ressor &eror3ance ro3 Aarn /la3+ai8 Ni8a'"a Con"itionin =onitorin ro!&. • • •

• • • • •

(.5.2.$

In!gra!d Ca'ac"!) and An!"8Surg Con!ro

T>o se&arate 3eas!res are &rovi"e" to &rotect 3ac8ine aainst "a3ae ro3 s!rin "!e to ins!icient loa"inG an anti7s!re control6 an" a ca&acit' control. T8e ca&acit' control sc8e3e 3a' #e interace" ro3 t8e in !nctionsG •

•

•

•

•

In nor3al o&eration6 t8e s&ee" o all t8ree co3&ressors >ill #e controlle" ro3 t8e &ress!re controller -(5PIC/7000 locate" in t8e co33on +NDC71 "isc8are 8ea"er6 >8ic8 >ill receive its set &oint ro3 t8e +NP =aster Controller locate" in t8e e?&ort as line. In case t8e t8ro!8&!t "e3an" o t8e +NP =aster Controller e?cee"s as s!&&l' ro3 t8e >ells an" t8e s!ction &ress!re alls #elo> its set &oint6 t8e lo> s!ction &ress!re constraint controller -(5PIC/71105 >ill control co3&ressor s&ee". It >ill re"!ce t8e s&ee" to 3aintain t8e s!ction &ress!re. In case t8e co3&ressor "isc8are &ress!re increases #e'on" t8e "esin li3it o "isc8are s'ste36 t8en t8e "isc8are &ress!re constraint controller -(5PIC/7120% >ill control co3&ressor s&ee". It >ill re"!ce t8e s&ee" to 3aintain t8e "isc8are &ress!re. Incase t8e co3&ressor 3otor &o>er increases on "e3an"6 a 8i8 &o>er constrain controller -(5MIC7120; >ill control t8e co3&ressor s&ee". It >ill re"!ce t8e s&ee" to 3aintain co3&ressor 3otor &o>er >it8in t8e li3it. In case t8e co3&ressor "isc8are te3&erat!re increases #e'on" t8e "esin li3it o "isc8are s'ste36 t8en t8e "isc8are te3&erat!re constraint controller -(5TIC/71202

>ill control co3&ressor s&ee". It >ill re"!ce t8e s&ee" to 3aintain t8e "isc8are te3&erat!re. •

T8e anti7s!re controller -also incl!"e" in t8e interate" ca&acit'  anti7s!re control #lock (5UIC71001 is inten"e" to &revent t8e co3&ressors o&eratin &oint to 3ove to>ar"s t8e s!re line.

D!rin nor3al co3&ressor o&eration6 t8e ca&acit' controller >ill a"$!st t8e co3&ressor s&ee" atte3&tin to 3eet t8e &rocess Ho> "e3an"Q 8o>ever i t8e co3&ressor o&eratin &oint 3oves to>ar"s t8e co3&ressor s!re line #ase" on t8e o&eratin con"itions6 t8e ca&acit' control >ill "e3an" t8e o&enin o t8e ca&acit' control valve (5UCV71219 @rst an" t8en t8e anti7s!re control >ill "e3an" t8e o&enin o t8e anti7s!re valve (5UCV71210. T8e interate" ca&acit'  anti7s!re controller #lock (5UIC71001 receives t8e &rocess 3eas!re3ents ro3 t8e t8ree &ress!re trans3itters -(5PIC/711056 (5PIC/7000  (5PIC/7120% an" t8e co3&ressor s!ction Ho> trans3itter (58ic8 is !se" as t8e &rocess 3eas!re3ent or t8e ca&acit' controller. T8e interate" ca&acit'  anti7s!re controller #lock (5UIC71001 also receives t8e &rocess 3eas!re3ents ro3 t8e t>o &ress!re trans3itters -(5PI7110 6 (5PI712016 te3&erat!re trans3itters -(5TT71109  (5TT1201 an" t8e co3&ressor s!ction Ho> trans3itter (58ic8 is !se" as t8e &rocess 3eas!re3ent or t8e antis!re controller. /ll t8e trans3itters involve" in t8e anti7s!re control s8all #e ast res&onse - 100 3sec t'&e trans3itters. T8e antis!re controller #lock >ill ive a s!re alar3 in case t8e o&eratin &oint 8as reac8e" t8e s!re &oint an" an in"ication sinal >8en t8e o&eratin &oint is close" to s!re an" t8e antis!re valve start to o&en. n se!ence6etc reer Co3&ressor Ven"or Doc!3ent. (.

Co+'r&&or A4!r Coor& /E856127 E85622 3 E856$2

Reer t8e ollo>in PE<+G 1. +N724;7PM72%(97(50107000% 2. +N724;7PM72%(97(50207000% %. +N724;7PM72%(97(50%07000%

T8e control narrative or an ater cooler E7(512 is "isc!sse" in t8is "oc!3ent an" t8e sa3e is a&&lica#le or t8e ot8er ater coolers -E7 (522 an" E7(5%2. (..1 %roc&& De&en"in on t8e s!ction &ress!re6 t8e te3&erat!re o t8e co3&resse" as on Booster Co3&ressors "isc8are >ill #e a#o!t ;0 to 1(9SC an" re!ires coolin #eore it enters t8e e?istin inlet cooler o +NP. T8is is acco3&lis8e" in an air coole" co3&ressor 8eat e?c8aner installe" on eac8 co3&ressor train "o>nstrea3 o t8e co3&ressor. T8e cooler consists o 2 #a's6 eac8 8o!sin 2 #!n"les an" coole" #' 2 ans6 #ot8 on varia#le s&ee" "rives. In or"er to 3atc8 oriinal "esin con"itions o t8e e?istin +NP6 it is t8e "esin intent to control t8e as e?it at 100SC.

(..2 A4!r Coor Ou!! T+'ra!ur Con!ro ,og"c (5TIC/7120%7/ter Cooler O!tlet te3&erat!re (..2.1

Objc!"#

To control t8e "isc8are cooler ans in or"er to ac8ieve t8e re!ire" te3&erat!re o t8e as at t8e o!tlet o t8e "isc8are cooler. (..2.2


T8e onl' &ara3eter re!irin control is t8e o!tlet te3&erat!re. 8en o!tlet te3&erat!re o t8e as is at ;0 °C6 #ot8 t8e cooler ans s8all #e r!nnin at t8e 3ini3!3 &ossi#le s&ee". I t8e cooler o!tlet te3&erat!re re"!ces !rt8er to a te3&erat!re 59 °C6 (5TIC/7120% >ill sto& one o t8e r!nnin an an" at t8e te3&erat!re 50 °C6 it >ill also sto& t8e ot8er an. T8e o!tlet te3&erat!re starts risin "!e to sto&&in o #ot8 ans. 8en o!tlet te3&erat!re o t8e as is at 59 °C6 (5TIC/7120% >ill start @rst sto&&e" an an" at t8e te3&erat!re ;0 °C6 it >ill also start t8e ot8er an. To 3a?i3ie t8e coolin6 #ot8 ans >ill r!n at controlle" s&ee" to 3aintain te3&erat!re at 100SC. (..2.$ I.


S!ar!8u' D!rin start7!& t8e lo> lo> te3&erat!re tri& -(5T/71204 s8all #e overri""en. T8e te3&erat!re controller (5TIC/7120% i3&le3ente" in t8e DC+ is con@!re" >it8 a "ea!lt settin >it8 0.0 F o!t&!t an" >ill onl' transer to /UTO 3o"e an" local set &oint on 8avin receive" a re!est to start t8e @n ans ro3 t8e start7!& se!ence.

II.

Nor+a S!ad)8S!a! Te3&erat!re trans3itter >ill control t8e varia#le s&ee" "rives o t8e cooler ans in or"er to kee& t8e o!tlet te3&erat!re o t8e as at 100 "e C.

III.

Cr"''d +od o'ra!"on Te3&erat!re trans3itter >ill #e &!t in 3an!al 3o"e. +tart  sto& o t8e cooler ans >ill #e "one 3an!all'.

IV.

Su! do;n No s&ecial &rovisions are re!ire".

V.


VI.


VII.


VIII.

-"&!or) None.

(.6

Condn&a! S'ara!or /V8560$

Reer t8e ollo>in PE<+ No. 1 +N724;7PM72%(97(500970001 (.6.1 %roc&& T8e Con"ensate +e&arator V7(50% collects 8'"rocar#on an" >ater se&arate" ro3 Co3&ressor +!ction +cr!##ers V7(511(521(5%1 an" se&arates con"ensate an" >ater. +o3e Has8in occ!rs "!e to a &ress!re "ierential #et>een t8e so!rce an" "estination vessels. T8ereore6 t8e Con"ensate +e&arator >ill #e "esine" an" o&erate" as a 8oriontal %7&8ase se&arator. +e&arate" li!i"s >ill &rocee" on t8eir o>n &ress!re 8ea" to t8eir res&ective "estinations e?istin in t8e +NP ill #e sent to E7(21% Con"ensate Cooler an" &ro"!ce" >ater to V7 (214 Pro"!ce" >ater "eassin vessel. ill #e "is&ose" o into O7as Pi&eline. T8e se&arator is "esine" in accor"ance >it8 DEP to ac8ieve li!i"s re3oval #etter t8an ;;F o t8e inlet li!i" vol!3e6 an" is e!i&&e" >it8 a +c8oe&entoter6 +inle >eir6 =is3at6 vorte? #reaker an" &late &ack. (.6.2 Condn&a! ,# Con!ro ,og"c (5)IC+/70%027Con"ensate level controller (5 controller (.6.2.1

Objc!"#

To control con"ensate level in t8e con"ensate se&arator. (.6.2.2


T8e V7(50% con"ensate level control is &eror3e" #' (5)IC+/70%02 -3aster controller. To ac8ieve #etter control6 level control is casca"e" to slave Ho> controller (58ic8 re!lates t8e control valve (58ic8 is locate" !&strea3 o (5 8i8 level set &oint6 con"ensate se&arator >ill #e taken to nor3al 3o"e #' closin #'&ass P+D valve -(5UV70%11 an" o&enin inlet P+D valve -(5UV70%10. (.6.2.$ I.


S!ar!8u' D!rin start7!& t8e controller s8all #e in 3an!al 3o"e. *o>ever6 o&enin o (5UV70%0% >ill "rive (5
II.


III.

Cr"''d +od o'ra!"on In case o in&!t sinal ail!re t8e level controller >ill #e &!t in 3an!al 3o"e. Valve o&enin an" closin >ill #e "one 3an!all'.

IV.

Su! do;n D!rin t8e P+D or E+D o t8e con"ensate se&arator 6 !&strea3 P+D valve -(5UV70%0% >ill close an" activates (5M+70%01 >8ic8 >ill close (5
V.


VI.


VII.


VIII.

-"&!or) None.

(.6.$ %roducd =a!r ,# Con!ro ,og"c (5)IC/70%017 Pro"!ce" >ater level controller (.6.$.1

Objc!"#

To control t8e &ro"!ce" >ater -interace level in t8e con"ensate se&arator. (.6.$.2


Con"ensate se&arator -V7(50% &ro"!ce" >ater level control is &eror3e" #' (5)IC/70%01 >8ic8 re!lates t8e control valve (5)CV70%01 locate" on &ro"!ce" >ater o!tlet line. O&enin an" closin o (5)CV70%01 is linke" to t8e o&eninclosin o P+D valve -(5UV70%04 locate" !&strea3 o (5)CV70%01. (.6.$.$ I.


S!ar!8u' D!rin start7!& t8e controller s8all #e in 3an!al 3o"e. *o>ever 6 o&enin o (5UV70%0% >ill "rive (5)CV70%01 in a!to 3o"e.

II.


III.


IV.

Su! do;n D!rin t8e P+D or E+D o t8e con"ensate se&arator 6 !&strea3 P+D valve -(5UV70%04 >ill close an" activates (5M+70%02 >8ic8 >ill close (5)CV70%01.

V.


VI.


VII.


VIII.

-"&!or) None.

(.6.( %r&&ur Con!ro ,og"c

(5PIC/70%0%/7 an" (5PIC/70%0%B7 Con"ensate se&arator &ress!re controllers. (.6.(.1

Objc!"#

To control t8e &ress!re o t8e con"ensate se&arator. (.6.(.2


T8e Con"ensate +e&arator -V7(50% &ress!re control is &eror3e" #' t>o in"e&en"ent &ress!re controllers (5PIC/70%0%/ an" (5PIC/7 0%0%B. T8e &ress!re o t8e con"ensate se&arator is trans3itte" to #ot8 &ress!re controllers #' (5PT70%0% installe" on con"ensate se&arator as o!tlet line. T8e co3&ressor co33on s!ction 8ea"er &ress!re s8all #e iven to calc!lation #lock (5P,C70%02. T8e &ress!re controllers -(5PIC/70%0% /B receive sinal ro3 &ress!re control calc!lation #lock (5P,C70%02 an" ro3 t8e &ress!re trans3itter (5PT70%0%. T8e &ress!re controller (5PIC/70%0%/ 3aintains t8e con"ensate se&arator &ress!re 4 #ar lo>er t8an t8e co33on s!ction 8ea"er &ress!re #' re!latin control valve (5PCV7 0%0%/ >8ic8 is locate" on vessel o7as o!tlet line. /not8er control valve -(5PCV70%0%B is &rovi"e" on t8e Hare line ro3 vessel. T8is control valve is re!late" #' controller (5PIC/7 0%0%B >8ic8 also receives t8e set &oint ro3 calc!lation #lock (5P,C70%02 an" ro3 t8e &ress!re trans3itter (5PT70%0%. T8e control valve s8all 8ave set &oint a&&ro?i3atel' 1 #ar 3ore t8an (5PCV70%0%/ set &oint. In case o an' !&set o (5PCV70%0%/6 t8e vessel &ress!re >ill increase an" t8en vessel &ress!re >ill #e re"!ce" #' o&enin control valve -(5PCV70%0%B an" e?cess as >ill #e sent to Hare s'ste3. 8en vessel &ress!re re"!ces6 t8en (5PCV7 0%0%B >ill close an" aain control >ill #e 8an"e" over to anot8er valve (5PCV70%0%/. (.6.(.$ I.


S!ar!8u' D!rin start7!& #ot8 t8e controllers s8all #e in 3an!al 3o"e !ntil t8e &ress!re >ill reac8 to nor3al val!e6 t8en it >ill #e &!t in t8e a!to 3o"e.

II.

Nor+a S!ad)8S!a! Press!re trans3itter is trackin t8e act!al val!e.

III.

Cr"''d +od o'ra!"on In case o in&!t sinal ail!re t8e #ot8 cotrollers >ill #e &!t in 3an!al 3o"e. Valves o&enin an" closin >ill #e "one 3an!all'.

IV.

Su! do;n

No s&ecial &rovisions are re!ire" as controller >ill #eco3e "isa#le" or "irect &ress!re control an" s>itc8 to 3an!al 3o"e. V.

O'ra!or "n!r4ac DC+ ra&8ic "is&la's >ill s8o> all real ti3e &rocess "ata. /ll control 3o"es an" &ara3eters6 e?ce&t t8e calc!lation !nctions o &ress!re controllers6 >ill #e availa#le in stan"ar" ra&8ic "is&la's an" accessi#le to t8e o&erator.

VI.

Cacua!"on Calc!lations #lock is re!ire".

VII.


VIII.

-"&!or) None.

(.6.> D"rn!"a %r&&ur S;"!c ,og"c (5PD+/ 0%097 Con"ensate se&arator &ress!re "ierential s>itc8. (.6.>.1

Objc!"#

To &revent 8i8 level in co3&ressor s!ction scr!##ers. (.6.>.2


T8e Con"ensate +e&arator -V7(50% &ress!re control is &eror3e" #' t>o in"e&en"ent &ress!re controllers (5PIC/70%0%/ an" (5PIC/7 0%0%B. 8ic8 !rt8er lea"s to co3&ressors P+D. To &revent Co3&ressors P+D6 "!e to t8e a#ove reason6 a &ress!re "ierential s>itc8 (5PD+/70%09 is &rovi"e". T8e "ierential &ress!re s>itc8 receives t8e sinals ro3 a &ress!re trans3itter (5PT70%01 installe" on con"ensate se&arator an" co3&ressor s!ction co33on 8ea"er &ress!re controller (5PIC/7 000(. 8en t8e "ierential &ress!re is less t8an 2 #ar -at lo> "ierential &ress!re6 t8e &ress!re "ierential s>itc8 o&ens con"ensate se&arator #' &ass valve (5UV70%11 an" closes con"ensate se&arator inlet valve (5UV70%10 to allo> con"ensate se&arator to >ork in #'&ass 3o"e. 8en t8e &ress!re "ierential is 3ore t8an 2 #ar -lo> "ierential &ress!re set &oint6 it o&ens con"ensate se&arator inlet P+D valve -(5UV70%10 an" closes t8e #'&ass P+D valve -(5UV70%11 to allo> con"ensate se&arator to >ork in nor3al 3o"e. (.6.>.$


I. S!ar!8u' D!rin start7!& &ress!re "ierential s>itc8 s8all #e in 3an!al 3o"e an" inlet valve s8all #e ke&t o&en. 8en t8e &ress!re in t8e con"esate se&arator reac8es to nor3al val!e6 t8en it >ill #e &!t in t8e a!to 3o"e. II. Nor+a S!ad)8S!a! Press!re trans3itter is trackin t8e act!al val!e. III. Cr"''d +od o'ra!"on In case o in&!t sinal ail!re6 t8e &ress!re "ierentail s>itc8 >ill #e &!t in 3an!al 3o"e. Valves o&enin an" closin >ill #e "one 3an!all'. IV. Su! do;n No s&ecial &rovisions are re!ire". V. O'ra!or "n!r4ac DC+ ra&8ic "is&la's >ill s8o> all real ti3e &rocess "ata. T8e s>itc8 3o"e an" ot8er &ara3eters6 e?ce&t t8e calc!lation !nctions o &ress!re s>itc86 >ill #e availa#le in stan"ar" ra&8ic "is&la's an" accessi#le to t8e o&erator. VI. Cacua!"on Calc!lations #lock is re!ire". VII. S'c"a con&"dra!"on None. VIII. -"&!or) None.

>.0 RE9ERENCE •

•

+ai8 Ni8a'"a De&letion Co3&ression P8ase7 I6 Basis or Desin Doc no VEC4992RPT1016 Rev7B. +ai8 Ni8a'"a De&letion Co3&ression P8ase7 I6 Process Descri&tion an" Control P8iloso&8'6 Doc no7 VEC4992RPT1026 Rev7B

5.0 ATTAC-ENTS • •

Process Control +c8e3atic Diara3 Process Enineerin +c8e3es

/&&en"i?7I Process Control +c8e3atic Diara3

/&&en"i?7II Process Enineerin +c8e3es

Process Control Narrative

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