Pigging Procedure Disouq

7/23/2019 Pigging Procedure Disouq

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OPERATIONS CONTROLLED DOCUMENT

DISOUQ PIGGING PROCEDURE

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Revision no:

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Revision no: 0

Date: 28/11/2015

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Reason for revision:!"e document is in ne# $ormat and updated%

!"is document contains proprietar& in$ormation and is intended $or use '& S(CO sta$$ onl&%!"e contents o$ t"is controlled document s"all not 'e c"an)ed #it"out $ormal approval o$ t"e

document custodian%


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PIGGING PROCEDURE Rev

CON!EN!S

1. INTRODUCTION................................................................................................................................................... 32. RESPONSIBILITIES.............................................................................................................................................. 33. PIGS TO BE USED............................................................................. ................ ............... ............... ................ ...... 44. GRADED CLEANING PROCEDURE............................................................ ............... ................ ............... .......... 45. LAUNCHER/RECEIVER SAFETY PRECAUTIONS................................................................... ............... ............ 56. PIGGING PROCEDURE.................................................................................. ................ ............... ................ ........ 56.4. LAUNCHER/RECEIVER SCHEMATIC......................................................... ................ ............... ............... ........ 87. PIPELINE PIGGING LOGSHEET...................................................................... ............... ............... ................ ...... 8. ADDITIONAL INFORMATION..................................................................................... ............... ............... ......... 1!8.1 PIPELINE INFORMATION.......................................................................... ................ ............... ................ ......... 118.2 SLUG CATCHER / PIGGING OPERATION OF 12" TRUN#LINE...................................................................... 12

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# IN!RODUC!ION

Routine pi))in) is carried out to prevent a 'uild-up o$ de'ris #it"in t"e pipeline and to remove $ree #ater #"ic"ma& accumulate at t"e 'ottom o$ t"e pipeline% Deposits can cause an e$$ective reduction o$ pipeline diameterand "ence increased 'ac* pressure to t"e e+port s&stem, 'ot" de'ris and sta)nant #ater can )ive rise toincreased corrosion o$ t"e pipeline and reduce t"e e$$icienc& o$ corrosion in"i'itor%

# O$%EC!IVE

ipelines cross 'oundaries o$ area responsi'ilit& and various parties are t"ere$ore involved in t"e launc" andreceipt o$ pi)s% !"is document see*s to provide a common procedure suc" t"at e$$icient operation is ac"ieved

durin) pi))in) activities and pi))in) is carried out in a controlled sa$e manner%

1.2 SCHEDULING

Oil/.as/ater transport lines

!"e minimum $reuenc& o$ pi))in) product transport lines is )iven in section o$ t"is procedure%

Note: Deviations $rom stated $reuenc& in section ma& 'e reuired and #ill 'e set '& t"e ipeline nte)rit&ana)ement aut"orit&% Deviation ma& 'e initiated '& t"e roduction ana)er%

RESPONSI$I'I!IES

- !"e 3rea Field ana)er is t"e 3sset custodian $or t"ose oil/)as and #ater lines t"at ori)inate $rom astation/$acilit& in "is area%

- t is t"e responsi'ilit& o$ t"e 3sset custodian to ensure t"at pi))in) is carried out at re)ular intervals inaccordance #it" t"is procedure%

- t is t"e responsi'ilit& o$ t"e 3sset custodian to ensure t"at t"e responsi'le supervisor o$ t"e pi) receivin)area is in$ormed and "as )iven "is consent prior to pi) launc"in)%

$!"e responsi'le supervisor o$ t"e receivin) area #ill arran)e retrieval o$ t"e pi) $rom t"e pi) receiver and $illsin relevant section o$ t"e pi))in) report 4see section 6%

$ t is t"e responsi'ilit& o$ t"e supervisor o$ t"e receivin) area to in$orm nspection section prior to openin) t"epi) receiver 'ecause internal inspection o$ t"e receiver is a reuirement%

$ !"e person in c"ar)e o$ t"e pi))in) activit& is responsi'le $or7$ t"at all pi))in) material used to pi) a line is in a $it $or purpose condition, and t"at t"e proper t&pe o$

pi) is used%$ c"ec*in) t"e launc"er/receiver con$i)uration, and t"at all valves are in )ood sealin) condition%

$ transport to t"e launc"er and initiation o$ t"e pi))in) report upon launc"in)%

- !"e receiver is responsi'le $or t"e $or#ardin)/return o$ t"e pi) to t"e launc"er department% e also completest"e pi))in) report and $or#ards t"e report to Corrosion Department and launc"in) supervisor% $ reuired, t"ereceiver is to ma*e alternative arran)ements $or t"e return o$ t"e pi)%

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- (pon retrieval o$ t"e pi) at t"e receivin) end, t"e production supervisor is responsi'le $or samplin) de'risand "andin) t"e sample over to t"e 3rea Corrosion 9n)ineer #"o #ill assess ualit& and uantit& and su'mitappropriate samples to t"e la'orator& $or $urt"er anal&sis% !"e anal&sis results are sent to O-0 #"en

o'tained $rom t"e la'orator& 4cop& C"emical 9n)ineer Cairo6%

- !"e launc"er is responsi'le $or t"e return o$ t"e pi) to t"e #or*s"op and reportin) o$ t"e reuired in$ormationin t"e pi))in) report%

2.1 REPORTING

!"e pi))in) report 4see section 6 is completed '& t"e supervisor responsi'le $or t"e launc" and s"all includeall necessar& in$ormation $rom t"e receipt activit&% !"e completed report is t"en routed to t"e area Corrosion9n)ineer #"o #ill lo) t"e pi))in) $reuenc& on a data 'ase en #ill send a cop& o$ t"e pi))in) report to t"eC"emical 9n)ineer in Cairo $or data anal&sin) #"o #ill in$orm t"e asset "older i$ pi))in) $reuencies need to'e adusted% !"e data #ill 'e put on t"e area data $ile server #"ic" is read onl& accessi'le%

(# PIGS !O $E USED

For routine pi))in) o$ pipelines it is recommended to use ;-DR9C!ON3< pi)s% ipelines #it" 'ore variationslar)er t"an 5= s"all 'e pi))ed #it" C( !>9 .S% 4In SUCO on)y CUP PIGS are *sed+For pipelines #"ic" "ave to 'e pi))ed $or t"e $irst time or "ave not 'een pi))ed $or a lon) time a )radedcleanin) procedure as descri'ed 'elo# must 'e $ollo#ed% 4Not to 'e used $or sales )as pipelines6For additional in$ormation on pi)s see section 8 o$ t"is procedure%

NO!9: !"e diameters o$ discs o$ ;-D pi)s "ave to 'e c"ec*ed prior to launc"in)% Seal disc OD to 'e appro+ ?= lar)er t"en t"e D o$ t"e pipeline to 'e pi))ed%

Support discs OD to 'e appro+ t"e same as t"e D o$ t"e pipeline to 'e pi))ed% For pipeline diameter in$ormation re$er to section %

,# GRADED C'EANING PROCEDURE

- Run i)" Densit& $oam pi) #it" smoot" pol&uret"ane cover% For pi) launc"in) and receivin) re$er to section@%1, @%2 and @%A% Note: No -oam pi"s to be *sed in e.port "as )ines /0i10 de)iver "as to point of1*stody transfer2 In t0is 1ase red*1ed si3e 1*p pi"s may be *sed instead of 4D foam pi"s#

- 9stimate volume o$ de'ris received and ta*e sample%- Continue to run D $oam pi)s until consecutive runs produce similar amounts o$ de'ris, or no de'ris%- Run i)" Densit& $oam pi) #it" criss-cross 'raided #ire 'rus"es%

Continue to run #ired $oam pi)s until consecutive runs produce similar amounts o$ de'ris, or no de'ris%- 9stimate volume o$ de'ris received 'et#een runs and ta*e sample%- Run steel 'odied ;-D pi) or C( pi) #it" uret"ane discs/cups%- 9stimate volume o$ de'ris received 'et#een runs, ta*e sample and continue until a run produces no

si)ni$icant de'ris%- Run ;-D pi) or cup pi) $itted #it" 5= diameter-@mm t"ic* aluminium )au)e plate%

NO!E: .au)e plates are used to demonstrate t"at pipelines are $ree o$ an& maor o'structions% !"e 'estlocation o$ a )au)e plate is ust in $ront o$ t"e rear sealin) cups or discs% n t"is position t"e c"ance isreduced t"at t"e plate #ill 'e dama)ed due to minor o'structions, 'ends, loose de'ris etc%

- Run ;-D pi) or C( pi) #it" $ull siBe discs/cups and 'rus"es until a run produces no si)ni$icant de'ris%

CAU!IONFoam pi)s can a'sor' "&drocar'ons% Care s"ould 'e ta*e #"en "andlin) t"em a$ter pi))in), especiall& incom'ination #it" p&rop"oric dust 4FeS6% mmerse t"e $oam pi) in #ater upon retrieval i$ p&rop"oric dust ispresent%

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5# 'AUNC4ER6RECEIVER SA-E!7 PRECAU!IONS

General

;loc*a)es o$ drain and vent valves '& pi) cups or lar)e uantities o$ de'ris is possi'le% Similarl&, pressure)au)es are sometimes $ault& or 'loc*ed% 3t least t#o pressure )au)es s"ould 'e $itted to t"e 'arrel at di$$erentlocations, #"ere possi'le, to )uard a)ainst t"is event%o#ever, i$ t"ere is an& dou't t"at t"e 'arrel is not at Bero pressure, close vent and drain valves and re-pressure t"e euipment% O'serve ver& care$ull& t"e c"an)es in pressure t"at are indicated, particularl& #"ent"e 'arrel is pressuriBed a)ain% Depressurise and once satis$ied t"at 'arrel is $ull& depressuriBed, proceed #it"door openin)%"en openin) t"e door o$ a launc"er or receiver, N99R stand in $ront o$ t"e door or at t"e side #"ere t"e"in)e is $itted% 9nsure t"at NO;OD> stands directl& in line #it" t"e door%!"e receiver s"all al#a&s 'e lined up prior to launc"in) a pi) and t"e proper operational valves ascertained%

Pyrophoric dust

Special precautions need to 'e ta*en on receivin) p&rop"oric dust% ;e$ore openin) t"e receiver t"e 'arrels"ould 'e damped do#n #it" a #ater source%

Note: Fire e+tin)uis"er and/or runnin) $ire "ose to 'e on site #"en iron sulp"ide 4FeS6 is e+pected%

NORM

!"is procedure s"all 'e read in conunction #it" procedure No 8Radio)o"i1a) safety pre1a*tions forpi""in" operations9

# PIGGING PROCEDURE

!"! LINING UP O# T$E RECEI%ER %&'('& )* +',)-* 6.4 L0,'&/&','-'& +,'0)-,

6.1.1 E+&' &0- 0' D -+ CLOSED 0 )0) )' **& # -+ +',&'.

6.1.2 OPEN ') 0'%+ E.

6.1.3 OPEN&'++&--9 0' G 0 :00,' 0' $ %-( -+)0' *& ,&0,; ;-,;'& 0' C! A+ )' -'-'(- ')'&+ )' &','-'&< 0-& =- :' -+0,' )&*9 ') 0'%+ E.

6.1.4 I )' ,0+' *( 0 90+ -'-' 0-& =- :' -+0,' :> 90+. C*)-*+ 90+ &'0-9+ +* :' )0;' )-1!!? 90+ -+ ')',)' 0) )' ') 0'.

NOTE&I9-)-* +*&,'+ +* :' &'*' (&* )' 0&'0.

6.1.5 @' )' :0&&' -+ ( *( &*,)< CLOSE ') 0'%+ E 0 0*= )' :0&&' )* &'++&-' (>.C',; )0) )' :0&&' &'++&' 909' +*=+ )' +0' 0' 0+ )' -' &'++&'.

6.1.6 OPEN ;-,;'& 0' C (> 0 OPEN-9 )&0 0' '! T-+ 0*=+ (- )* (*= )&*9 )' &','-'&.I ,0+' *( *= (*= )'&' -+ 0 &-+; *( )' -9 +)*-9 0,&*++ )' :>$0++ )''.

6.1.7 C*(-& )'&' -+ * '0;09' (&* )' **& +'0 0 (-))-9+ :'(*&' '0-9 +-)'.

!(! PIG LAUNC$ING %&'('& )* +',)-* 6.4 L0,'&/&','-'& +,'0)-,

6.2.1 E+&' ;-,;'& 0' C 0 -9 )&0 0' ' 0&' CLOSED!

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6.2.2 OPEN &0- 0' D 0 ') 0' E )* &0- 0 '&'++&-' )' 0,'& :0&&'. Con)ir* +eropressure! U+'0) :'' +,&'= * **&. I( * (- (*=+ )&*9 )' :'' +,&'=< REMO%E:'' +,&'=.

A-& (*= -)* )' )&0 --,0)'+ )0) (- -+ +)- (*=-9 (&* )' &0-. @' )' 0-& (*= +)*+ )' )&0-+ (> &0-' 0 )' **& 0> :' *''.

NOTE& A:'& *( *'& **&+ 0> *) :' (-))' =-) :'' +,&'=+. I )'+' ,0+'+ 0-)-*0 &',0)-*++* :' )0;' :'(*&' *'-9 )' **& '.9. ,*(-& :> -+0 *:+'&0)-* )0) &0--9 0+ +)*'.

6.2.3 OPEN **& #.

6.2.4 L*0 -9 -)* :0&&'< '+&-9 )0) )' (&*) &--9 ,+ 0&' - ,*)0,) =-) )' &',' :*&' 0&) *( )':0&&'.

6.2.5 CLOSE **& #! CLOSE &0- 0' D! E+&' )0) **& -+ +',&'> *,;'.

6.2.6 OPEN&'++&--9 0' G -( -+)0' *& ,&0,; ;-,;'& 0' C!A+ *- ')'&+ 0-& =- :' -+0,' (&*)' :0&&' )&*9 ') 0' E!

6.2.7 @' )' :0&&' -+ ( *( &*,)< CLOSE ') 0' 0 0*= )' :0&&' )* &'++&-' (>. I ,0+' *(0 90+ -'-'< 0-& =- :' &'0,' :> 90+. C*)-*+ &'0-9+ +* :' )0;' )- 1!!? 90+ -+')',)' 0) )' 90+ ') 0'.

NOTE& O:+'&' *)' '& 6.1.4.

C',; )0) 0 &'++&' 909'+ 9-' )' +0' &'0-9.

6.2. OPEN &','-'& -+*0)-* 0' '

6.2.1! OPEN ;-,;'& 0' C (>. CLOSE:00,' -' $ -( -+)0'.

6.2.11 S*=> CLOSE:>$0++ 0' A )* (*&,' &*,) (*= )&*9 )' 0,'& )- -9 +-90'& ," )&-++*=-9 )0) )' -9 0+ '() )' :0&&' 0 -+ )&0'-9 )&*9 )' -'-'. R'+') )' -9 +-90'&.

6.2.12 OPEN:>$0++ 0' A!

6.2.13 CLOSE ;-,;'& 0' C

6.2.14 CLOSE-9 )&0 0' '!

6.2.15 D&0- 0 '&'++&-' 0+ '& 6.2.2 0:*'

6.2.16 OPEN **& # 0 ,*(-& )0) -9 0+ :'' 0,'. C',; +'0< ,'0 0 -9)> *- 0)-9 +&(0,'+

6.2.17 CLOSE **& # 0 '+&' )0) -) -+ +',&' 0+ '& 0(0,)&'&+ &*,'&'.

6.2.18 CLOSE &0- D 0 ') E 0'+. C'0< ')> +0'& -).

6.2.1 C*')' PIPELINE 0 LAUNCH +',)-*+ *( )' -99-9 *9 +'').

!-! PIG RECEI%ING %&'('& )* +',)-* 6.4 L0,'&/&','-'& +,'0)-,

6.3.1 T' &','-'& 0+ :'' -' 0+ '& +',)-* 6.1.

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6.3.2 A&&-0 *( )' -9 -+ +*= --)-0> :> -9 0'&) ,(:'-9 0,)-0)'. ," +* 0,)-0)' +*&)>0()'&=0&+ )* +*= )0) )' -9 0+ ')'&' )' :0&&'. I( ," *'+ *) 0,)-0)'< )' :>$0++ 0' A +)

:' ,*+' *& )&*))' )* (*&,' )' -9 -)* )' :0&&'.

6.3.3 O,' )' -9 -+ HOME - )' :0&&'< OPEN:>$0++ 0' A (>.

6.3.4 CLOSE-9 )&0 &','-'& 0' '!

6.3.5 CLOSE ;-,;'& 0'%+ C!

6.3.6 D&0- 0 D'&'++&-+' 0+ '& +',)-* 6.2.2.

6.3.7 OPEN **& # 0 &'*' -9.

6.3.8 C'0 *) &','-'& :0&&' 0 )0;' +0' *( ':&-+ -( 2! ;9< *& -( +',-(-,0> -+)&,)'. A +0' +'')

+0 :' ,*')' 0 +') =-) )' +0' )* )' 0:*&0)*&>. T' +0' )0;-9 +) :' &',*&' * )'*9 +''). %(*& -(* . C',; **& +'0< ,'0 0 -9)> *- 0)-9 +&(0,'+.

6.3. CLOSE **& #. &0- 0' D 0 ') 0' E! E+&' **& # -+ +',&' 0+ '& M0(0,)&'&+&*,'&'+.

6.3.1! I+',) -9 (*& 009' 0 0,)-* &'(&:-+') 0/*& &')& &'0> (*& ') +'.

6.3.11 E+&' &')&-'0 +',)-* 0)0 -+ 0++' )* +'&-+*& (*& ,*')-* *( )' -99-9 *9 +'').

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#,# 'AUNC4ER6RECEIVER SC4E;A!IC


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9 OF D9;RS:

S3/N6

CRC(F9R9NC9 OF .(D9 C(S 4indicate #ear6:

CRC(F9R9NC9 OF S93< DSCS 4indicate #ear6:

;R(S COND!ON:

. D33.9:

R93RES:

.au)e plate:

16 Cover pi)s a)ainst sunli)"t% N39:

26 lace pi)s in 'rac*ets durin) transport%

A6 Clean pi)s directl& a$ter use% S.N3!(R9:

?6 c"ec* ti)"tness nuts/'olts%

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=# ADDI!IONA' IN-OR;A!ION

9$$icient S#a''in) i) elocities%

- 9$$icient pi))in) speeds $or CUP pi)s in s#a''in) de'ris $rom pipelines ran)e $rom 0%2-1%@ m/sec% Optimumspeed #> ? #& m/sec%

- 9$$icient pi))in) speeds $or CUP pi)s in s#a''in) $luids $rom pipelines ran)e $rom 0%2-?%5 m/sec% !"e )o/ert0e speed t0e better t0e effi1ien1y#

? 9$$icient pi))in) speeds $or $I?DI pi)s $or s#a''in) de'ris $rom pipelines ran)e $rom 0%2 m/sec to #ell a'oveA m/sec% Optimum speed is above > m/sec%

- 9$$icient pi))in) speeds $or $I?DI pi)s s#a''in) liuids $rom pipelines ran)e $rom 0%2 to #ell a'ove @ m/sec%

!0e )o/er t0e speed t0e better t0e effi1ien1y#

? i))in) at lo# speeds 40%2 m/sec6 #it" ;-D pi)s is still reasona'le e$$ective% !"ere seems to 'e no realreason $or a minimum pi))in) speed%

3mount o$ oversiBe o$ seal discs%

edium overBise seal discs 4?=6 on ;-D pi)s seem to 'e most e$$icient% 2= oversiBe discs create a too #ide)ap7 @= oversiBe disc start to act too muc" as a cup pi), #ill reuire a "i)"er drivin) pressure and #ill #eardo#n $ast%

ndications o$ t&pical tolera'le 'ore variations%

- Foam i)s 20-@0=- Sp"eres 20-A0=- Cup i)s 10-15=- ;i-Di i)s 5-10=

i)" !emperature i)s%

For pipelines operatin) a'ove @0 C consideration s"ould 'e )iven to deteriation o$ disc and cup materials%

- For !emp G @0 de)r% C ol&uret"ane discs and cups%- For !emp @0 de)r% C G 100 de)r% C Neoprene discs and cups%- For !emp 100 de)r% C iton discs and cups%

Cup Disc material

n )eneral ol&uret"ane #it" a "ardness o$ 0 S"ore 3 is recommended as disc/cup material%

NO!E : Certain t&pes o$ pol&uret"ane ma& su$$er up to A0= s#ellin) i$ t"e& come in contact $or lon)erperiods #it" met"anol% t ma& also result in rapid loss o$ elasticit& and s"ore "ardness t"ere$ore i$ met"anol isused material selection o$ cups and discs is critical%

NO!E &: !"e siBes o$ all pipelines are identi$ied '& t"e Nominal ipe SiBe HNSI, #"ic" is seldom eual to t"etrue 'ore 4nternal Diameter6 o$ t"e pipe% !"e di$$erences in some instances is lar)e% ipes #it" a NS o$ 1?and a'ove "ave an Outside Diameter #"ic" is eual to t"e NS% $ t"e e+act D o$ t"e pipeline is not *no#n ori$ t"e D varies over t"e len)t" o$ t"e pipeline t"en ;-D pi)s must not 'e used% n t"is case use C( pi)s#"ic" can cope #it" a lar)er variation in pipeline 'ore%

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=# PIPE'INE IN-OR;A!ION

Ser/ice Start End Len0th1M

Dia!Inch

Pi00a2le

S0'+ 90+ (&* TPF TPF BVS 2 T-'$- NTS G0+,* 1 16 V-0 M*:-'0&&09'')

(&* CTP

S0'+ 90+ (&* CTP CTP T-'$- NTS G0+,* 4!.3 16 V-0 M*:-'0&&09'')

(&* CTP

S0'+ ,*'+0)'(&* TPF

TPF B*,; 0'+)0)-*

T-'$- NTS PPC 1.4 6 V-0 M*:-'0&&09'')F&* CTP

S0'+ ,*'+0)'(&* CTP

CTP PPC T-'$- 4!.7 6 V-0 M*:-'0&&09'')

R0= 90+/ M)-0+' N@# 1$3 N@# 1$1 0-(* 1.4 6 N*R0= 90+/ M)-0+' N@# 1$1 N@# 1$1 0-(* !.25 6 N*

R0= 90+/ M)-0+' N@# 1$1 0-(*

N@# 1$2 1.5 6 N*

R0= 90+/ M)-0+' TPF T-'$- 16" !.2 8 N*

R0= 90+/ M)-0+' N@# 1$2 TPF 0-(* !.5 6 N*

R0= 90+/M)-0+' N@#$1$4 N@# 1$2 M0-(* 5 8 Y'+

R0= 90+/ M)-0+' NSG$1$1 NSG$1$1M0-(* / CTP

2.! 6 Y'+

R0= 90+/ M)-0+' NSG$1$2 NSG$1$1 M0-(* !.25 6 N*

R0= 90+/ M)-0+' SSG$1$1 SSG$1$1 M0-(*$CTP

.57 6 Y'+

R0= 90+/ M)-0+' SSG$1$2 SSG$1$1 M0-(* 1.21 6 N*

R0= 90+/ M)-0+' N@SG 1$1A CTP M0-(* 12 Y'+R0= 90+/ M)-0+' NSG 2$3 CTP M0-(* Y'+

R0= 90+/ M)-0+' NSG 2$1 NSG 2$3 M0-(* N*

R0= 90+/ M)-0+' SSSE$3$1 NSG 1$10 M0-(* N*

R0= 90+/ M)-0+' NSG 4$1 CTP M0-(* 8 N*

T'+' ='+ ,&&')> &*,' -)* )' RPF 0) N@# 1$2 0 (&* )' TPF -)* )' 16"S0'+ 0+ -'.

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=#& S'UG CA!C4ER 6 PIGGING OPERA!ION O- &9 !RUN@'INE

!"e 12I !run*


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D' )* ,&&') +-)0)-* (*& +9 ,0),'& 0+ -) -+ *'&0)' 00> =' 0 +*' *-(-,0)-*+ )* '+&'*&0 -99-9 *'&0)-* (*& 12 -' -'

1$ B'(*&' -99-9 +)0&) < ;'' =0)'& '' 0) )' +9 ,0),'& 0) -9 '' %/$ 2!!! MM)*'+&' ,*'+0)' ,0&&> *'& )* ,*'+0)' 0&) 0) )' *)'& +-'.

2$ A) )' 0> *( -99-9:'(*&' +)0&) -99-9 :> /$ !.5 &.< +)0&) )* &0- =0)'& ,*'+0)' '')- &'0, )* LL '' * ,*'+0)' ,*0&)') 0 )* *= '' %/$ !! MM -)'&(0,' 0/$ 12!! )* -J- '' * =0)'& ,*0&)') )0) '+&' * ,*'+0)' '+,0-9 =-) =0)'&)* =0)'& '90++'& '++'.

3$ I)+ *++-:')* '&(*& *'&&-' )* LAHH 5!1! KV 5!14 0) +9 ,0),'& ' )* 0(,)-**( =0)'& ,*)&* ** 0 (*& 0> (0)> )&0+-))'& -( &'J-&'.

4$ I+). ,&'= +) ,',; '' )&0+-))'&+ 0 '' 90++'+ *( =0)'& 0 ,*'+0)' 0) +9,0),'&:'(*&' +)0&) -99-9.

5$ M',0-,0 ,&'= +) ,',; +)&0-'& *( + 0) =0)'& '90++'& 0 ,*'+0)' +)0:--'& -):'(*&' +)0&) -99-9.

6$ T' '',)' )-' (*& -9 0&&-0 -+ 0:*) 2 &+ < +* 0()'& 1.5 & ;'' ,*+' *-)*&-9 (*& ''-+-' +9 ,0),'& .

7$ T* 0*- *'&(*= 0 +) *= *( )' +9 ,0),'& &-9 -99-9 *'&0)-*+ )' :>$0++0'+ G" - )' 2" :>$0++ -' 0,&*++ 0' C" +0 :' +' =-' 0' C" -+ ,*+' %+''+;'), -9 &','-'&.''-9 * '' * +9 ,0),'& -)+ *++-:' )* ,*')' ,*+-9 V0'G" *& ,*+-9 ='+ N@SG 1$1 0 SSSE 3$1 -( &'J-&'

8$ @' +) ;'' *-)*&-9 (*& '' 0 &'++&' 0) LTS AB 0 ,*'+0)' +)0:--'& -).$ @' ,0 &',' &'++&' 0) 1+)+)0:--'& )* &*-' *&' *' 0) '++' 0 )* ' (*& -J-

&0- (&* +9 ,0),'& 0 LTS A/B.1!$ O:+'&' 0 *-)*& -9 &','-'& 0'&)+ 0) 0-(* 0&'0 )* ,',; -9 0&&-0!

Pa"e 13 *( 13

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Pigging Procedure Disouq