ELSHT01

September 2011

Process Industry Practices Electrical

PIP ELSHT01 Self-Regulated Electric Heat Tr Trace ace System Specification

PURPOSE AND USE OF PROCESS INDUSTRY PRACTICES In an effort to minimize te cost of !rocess industry facilities" tis Practice as  #een !re!ared from te tecnical re$uirements in te e%istin& standards of ma'or  industrial users" contractors" or standards or&anizations( )y armonizin& tese tecnical re$uirements into a sin&le set of Practices" administrati*e" a!!lication" and en&ineerin& costs to #ot te !urcaser and te manufacturer sould #e reduced( +ile tis Practice is e%!ected to incor!orate te ma'ority of re$uirements of most users" indi*idual a!!lications may in*ol*e re$uirements tat ,ill #e a!!ended to and ta-e !recedence o*er tis Practice( Determinations concernin& fitness for !ur!ose and !articular matters or a!!lication of te Practice to !articular !ro'ect or en&ineerin& situations sould not  #e made solely on information contained in tese materials( Te use of trade names from time to time sould not #e *ie,ed as an e%!ression of !reference #ut rater  reco&nized as normal usa&e in te trade( Oter #rands a*in& te same s!ecifications are e$ually correct and may #e su#stituted for tose named( All Practices or &uidelines are intended to #e consistent ,it a!!lica#le la,s and re&ulations includin& OS.A re$uirements( To te e%tent tese Practices or &uidelines sould conflict ,it OS.A or  oter a!!lica#le la,s or re&ulations" suc la,s or re&ulations must #e follo,ed( Consult an a!!ro!riate !rofessional #efore a!!lyin& or actin& on any material contained in or su&&ested #y te Practice(

Tis Practice is su#'ect to re*ision at any time( / Process Industry Practices 0PIP1" Construction Industry Institute" Te Uni*ersity of  Te%as at Austin" 2345 +est )ra-er 6ane 0R75881" Austin" Te%as 9:953( PIP ;em#er  Com!anies and Su#scri#ers may co!y tis Practice for teir internal use( Can&es or  modifications of any -ind are not !ermitted ,itin any PIP Practice ,itout te e%!ress ,ritten autorization of PIP( Autorized Users may attac addenda or o*erlays to clearly indicate modifications or e%ce!tions to s!ecific sections of PIP Practices( Autorized Users may !ro*ide teir clients" su!!liers and contractors ,it co!ies of te Practice solely for Autorized Users< !ur!oses( Tese !ur!oses include #ut are not limited to te  !rocurement !rocess 0e(&(" as attacments to re$uests for $uotation= !urcase orders or  re$uests for !ro!osals=contracts1 and !re!aration and issue of desi&n en&ineerin& deli*era#les for use on a s!ecific !ro'ect #y Autorized User
PUBLISHING HISTORY

Se pt ember 2011

Issue d  

 Not !rinted ,it State funds

September 2011

Process Industry Practices Electrical

PIP ELSHT01 Self-Regulated Electric Heat Trace System Specification Table of Contents 1 Introduction ! 1.1 Purpose 1.2 Scope 2

2

! References ! 2.1 Process Industry Practices 2 2.2 Industry Codes and Standards 2

" #efinitions ! $ Re%uirements " 4.1 General 3 4.2 Heating Cable 3 4.3 Control Panels 3 4.4 Space Heaters 4 4.5 Accessories 5 4.6 Controls 5 4. Special !e"uire#ents 6 4.$ %esign Criteria  4.& 'a#eplates  4.1( Inspection and )esting  4.11 S*ipping  4.12 %ocu#entation 4.13 Con+lict !esolution $

#ata &orm ,-SH)(1! / Sel+!egulated ,lectric Heat )race Syste# Speci+ication %ocu#entation !e"uire#ents S*eet

Process Industry Practices

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PIP ELSHT01 September 2011 Self-egulated Electric Heat Trace System Specification

1

Introduction 11

Purpose Tis Practice !ro*ides re$uirements for te desi&n and !urcase of self>re&ulated electric eat trace systems(

1!

Scope Tis Practice descri#es te re$uirements for e$ui!ment" materials" and desi&n ser*ices for  electrical eat trace systems tat use !arallel>trace self>re&ulatin& ty!e eat trace ca#le ,it &round #raid( Tis Practice includes re$uirements for eat trace ca#le" monitor> control !anel" 'unction #o%es" and tem!erature sensors( Te follo,in& are not included in tis Practice? a(

Series>resistance" mineral>insulated" inductance ty!e" and im!edance ty!e eat tracin& systems

 #( Panel#oards" circuit #rea-ers" and field ,irin& of eat tracin& system com!onents c(

Installation of te e$ui!ment and materials !ro*ided

d( Insulation materials or installation

!

References A!!lica#le !arts of te follo,in& Practices" industry codes and standards" and references sall #e considered an inte&ral !art of tis Practice( Te edition in effect on te date of contract a,ard sall #e used" e%ce!t as oter,ise noted( Sort titles are used erein ,ere a!!ro!riate(

!1

Process Industry Practices 'PIP(  @ PIP E6S.T8D > Data Sheet for Electric Heat Trace Specification

!!

Industry Codes and Standards •

Institute of Electrical and Electronics En&ineers 0IEEE1  @ IEEE 55 > Standard for the Testing, Design, Installation, and Maintenance of  Electrical Resistance Heat Tracing for Industrial pplications

•

 National Fire Protection Association 0NFPA1  @ NFPA 98 > !ational Electrical "ode #!E"$

"

#efinitions o%ner& Te !arty ,o o,ns te facility ,erein te electric eat tracin& system ,ill #e used  purchaser& Te !arty ,o a,ards te contract to te su!!lier( Te !urcaser may #e te o,ner or te o,ner
Process Industry Practices

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PIP ELSHT01 September 2011 Self-egulated Electric Heat Trace System Specification

$

Re%uirements $1

$!

$"

)eneral 7((

Electric eat trace systems sall #e desi&ned and tested in accordance ,it  !urcaser
7((4

See !urcaser
7((2

.eat trace ca#le and associated com!onents necessary for field installation of a com!lete o!eratin& system sall #e !ro*ided(

7((7

All e$ui!ment and com!onents sall #e certified and la#eled #y a tird !arty  Nationally Reco&nized Testin& 6a#oratory(

Heating Cable 7(4(

.eatin& ca#le sall #e suita#le for te area classification and ser*ice tem!eratures s!ecified on !urcaser
7(4(4

Self>re&ulatin& eatin& ca#le sall #e desi&ned for a useful life of 48 years minimum ,it B!o,er on continuously" #ased on te useful life criteria of retention of at least 95 of rated !o,er after 48 years of o!eration at te ma%imum !u#lised continuous e%!osure 0i(e(" maintain1 tem!erature(

7(4(2

Ca#les sall #e co*ered #y metallic #raid of tinned or nic-el !lated co!!er tat  !ro*ides nominal co*era&e of :8 and e%i#its resistance of 8(885 om=ft ma%imum 08(8 om=meter1(

7(4(7

Unless oter,ise s!ecified on !urcaser
7(4(5

Ca#les for lines enterin& #uildin&s sall include sufficient len&t to eat trace te line t,o feet into te #uildin& interior(

7(4(

S!iral ,ra!!in& of lines sall not #e !ermitted(

7(4(9

;anufacturer
7(4(:

Ca#le sall #e desi&ned to !ermit #ein& crossed o*er itself and cut to len&t in te field(

7(4(3

Unless oter,ise s!ecified on !urcaser
Control Panels 7(2(

Enclosures for electronic controllers sall #e as s!ecified on te !urcaser
7(2(4

Control !anels sall a*e a front ,indo, for *ie,in& control de*ices(

$""

*iring 7(2(2(

Process Industry Practices

Controller terminals sall #e factory>,ired to terminal #loc-s for incomin& and e%itin& control ,irin&(

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PIP ELSHT01 September 2011 Self-egulated Electric Heat Trace System Specification

7(2(2(4

Terminal #loc-s for e%itin& RTD ,irin& sall #e !ro*ided in a se&re&ated area(

7(2(2(2

All ,irin& sall #e mar-ed on eac end ,it !ermanently !rinted ,ire mar-ers" eiter eat>srin-a#le or sli!>on ty!e( Adesi*e>ty!e ,ire la#els sall not #e !ermitted(

7(2(2(7

All ,ires" terminals" and de*ices sall #e num#ered and ta&&ed in accordance ,it te !o,er and control ,irin& dia&rams(

7(2(2(5

All ,irin& sall #e continuous from terminal to terminal ,itout s!licin&(

7(2(2(

Unless oter,ise s!ecified on !urcaserretardant" 88>*olt" 95C rated insulation(

7(2(2(9

;inimum conductor sizes sall #e as follo,s? a( Po,er ,irin&" 4 A+G  #( Control ,irin&" 7 A+G c( Si&nal ,irin&"  A+G

7(2(2(:

Terminal #loc-s sall #e con*eniently located and clearly mar-ed(

7(2(2(3

Terminal #loc-s for control ,ire sall #e scre, ty!e and accommodate te follo,in&? a(

Pre>insulated crim!>ty!e rin&>ton&ue and loc-in& for- ,ire lu&s

 #( ;a%imum size 4 A+G ,ires c(

;inimum of 8 s!are control terminal !oints

7(2(2(8 Terminal #loc-s for !o,er ,irin& terminations sall #e desi&ned for com!ression>ty!e ,ire lu&s(

$$

Space Heaters 7(7(

Unless oter,ise s!ecified on !urcaser
7(7(4

S!ace eaters sall #e !o,ered as so,n on !urcaser
7(7(2

Te eat tracin& control !anel sall #e !ro*ided ,it a s!ace eater rated at 478 *olts(

7(7(7

S!ace eaters sall #e sized to !ro*ide te re$uired eat out!ut o!eratin& on a 48 *olt system(

7(7(5

S!ace eaters sall #e !ro*ided ,it i& tem!erature ,irin& ,itin  inces 058 mm1 of te eater terminals(

7(7(

S!ace eaters sall #e mounted on a stand>off insulator and !ro*ided ,it  !ersonnel !rotection from termal #urns(

Process Industry Practices

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PIP ELSHT01 September 2011 Self-egulated Electric Heat Trace System Specification

7(7(9

If s!ace eaters are !o,ered #y a se!arate e%ternal su!!ly" a caution name!late" as so,n #elo," sall #e !ro*ided on te door of eac cu#icle tat contains s!ace eaters(

+,SERE C./TI+ ETER.L P+*ER S+/RCE

$2

7(7(:

An o*er>current !rotection and disconnect for eac s!ace eater circuit sall #e  !ro*ided in eac eat tracin& control !anel(

7(7(3

If s!ecified on !urcaser
.ccessories ;anufacturer
$3

Controls $31

.pplication Type 7((( Electrical eat tracin& a!!lication ty!e sall #e in accordance ,it  !urcaser
$3!

Configurations 7((4( Controls sall #e !ro*ided as s!ecified on te !urcasersensin& termostats for freeze !rotection sall a*e ad'usta#le set!oint" NE;A 7H enclosure" and sin&le>!ole dou#le>tro, contact rated at 48A minimum at 48AC( 7((4(2 RTDs sall #e line>sensin& ty!e" 2>,ire" 88>om !latinum" ,it NE;A 7H ,eater ead ,it terminal #loc-s and stainless steel mountin& ard,are( 7((4(7 Electronic tem!erature controllers sall #e ca!a#le of acce!tin& multi!le RTD in!uts" and sall include te follo,in& features? a( Enclosure as s!ecified on te !urcasertrace alarm" lo, #attery(

Process Industry Practices

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PIP ELSHT01 September 2011 Self-egulated Electric Heat Trace System Specification

c( 6ED dis!lay? ;inimum 78 caracter dis!lay to indicate system status alarm and tem!eratures from all tem!erature transmitters( d( Automatic dis!lay of all alarm messa&es( e( Inte&ral &round>fault !rotection( f( Dry contact for &eneral alarm out!utJ one for eac circuit controlled( &( On=Off and PID control modes( ( Communication ca!a#ility as s!ecified on te !urcaser
$3"

.larm Conditions Dry contacts for &eneral alarm out!uts from electronic controllers sall actuate u!on any of te follo,in& alarm conditions? a( .i& and lo, tem!eratures  #( .i& and lo, eater current c( Ground lea-a&e current d( Dama&ed RTD sensor 

$3$

)rouping 7((7( Unless oter,ise s!ecified on te !urcaser
$4

$5

Special Re%uirements 7(9(

Pi!in& systems con*eyin& *arious fluids may #e ad*ersely affected #y i& tem!eratures( See !urcaser
7(9(4

If s!ecified on te !urcaser
#esign Criteria Desi&n criteria sall #e as s!ecified on !urcaser
Process Industry Practices

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PIP ELSHT01 September 2011 Self-egulated Electric Heat Trace System Specification

$6

$10

ameplates 7(3(

Name!lates sall #e !ro*ided on te outside of te enclosure identifyin& te ser*ice and e$ui!ment num#er in accordance ,it !urcaser
7(3(4

Unless oter,ise s!ecified on !urcaser
7(3(2

Unless oter,ise s!ecified on !urcaser
Inspection and Testing Factory ins!ections and tests for self>re&ulatin& eater ca#les sall #e !erformed in accordance ,it IEEE )1) test section and a!!lica#le manufacturer
$11

S7ipping 7(( Unless oter,ise s!ecified in te !urcase order documents" !re!aration for si!ment of e$ui!ment sall #e in accordance ,it su!!lier ti&t !ac-a&in&" suita#le for outdoor stora&e(

$1!

#ocumentation $1!1 )eneral 7(4(( Unless oter,ise s!ecified on te !urcaser#uilt dra,in&s sall #e su#mitted in Autocad (D+G format and Ado#e PDF format( 7(4((2 Eac document sall so, te !urcase order num#er" 'o# num#er"  !lant area num#er" and all necessary references" notes" etc( 7(4((7 Purcaser ,ill furnis dra,in& #order CAD files and final dra,in& num#er assi&nments( 7(4((5 Purcaser ,ill !ro*ide CAD !lot !lans" e$ui!ment layouts" !i!in& and conduit=ca#le tray !lans for te e%istin& facilities as re$uired(

Process Industry Practices

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PIP ELSHT01 September 2011 Self-egulated Electric Heat Trace System Specification

7(4(( Dra,in&s" #ased on te information furnised #y te !urcaser" sall #e  !ro*ided for ne, conduits=trays" ,irin&" and installation details related to te eat tracin& installation( 7(4((9 A com!lete list of e%ce!tions ta-en to te contract documents includin& s!ecific !ara&ra! num#ers sall #e !ro*ided ,it te $uotation( If a list of e%ce!tions is not !ro*ided" te $uotation sall #e considered in full com!liance ,it te contract documents(

$1"

Conflict Resolution Any conflicts #et,een te reference documents sall #e identified in ,ritin& to te  !urcaser for resolution( If resol*in& conflicts" te follo,in& order of !recedence sall a!!ly? a( Purcase order   #(  'I' E(SHT01D Data Seet c( Tis Practice" 'I' E(SHT01 d( Referenced standards

Process Industry Practices

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