IS 4682-4: Code of practice for lining of vessels and equipment for chemical processes, Part 4: Lining with Sheet Thermoplastics

21 Pages·1998·2.1 MB·English

by  Bureau of Indian Standards

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“The Right to Information, The Right to Live” “Step Out From the Old to the New”
IS 4682-4 (1998): Code of practice for lining of vessels
and equipment for chemical processes, Part 4: Lining with
Sheet Thermoplastics [MED 17: Chemical Engineering Plants
and Related Equipment]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee””
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै”
Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”

CODEOFPRACTICEFORLININGOFVESSELS
ANDEQUIPMENTFORCHEMICALPROCESSES
PART 4 LINING WITH SHEET THERMOPLASTICS
First Revision )
(
ICS 7 1.120.10, 83.1210.20;8 3.080.20

0 BIS 1998
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI I 10002
September 1998 Price Group 7
lacimehC gnireenignE stnalP dna detaleR tnempiuqE lanoitceS ,eettimmoC HMD 17
DROWEROF
sihT naidnI dradnatS (Part 4) tsriF( )noisiveR was adopted yb the uaeruB of naidnI ,sdradnatS after the draft
dezilanif yb the lacimehC gnireenignE stnalP dna detaleR tnempiuqE lanoitceS eettimmoC had neeb devorppa
yb the yvaeH lacinahceM gnireenignE noisiviD .licnuoC
sihT dradnats was tsrif dehsilbup ni 1969. sihT noisiver of the dradnats has neeb thguorb ~;CL ot etaroprocni the
tsetal stnempoleved that evah nekat ecalp ni the yrtnuoc ni the gninil of process slessev dna other tnempiuqe
desu ni the dleif of lacimehc processes. tnatropmI snoitacifidom enod ni siht dradnats :gnieb
a) noitamrofnI ot eb degnahcxe neewteb the detseretni seitrap ;detarobale
)b nI ecalp of dezicitsalp CVP ,ylno the dradnats won sedivorp for the esu of sheet scitsalpomreht osla as
gninil ;slairetam
c) senilediuG for noitceles dna ytilauq of gninil ;detarobale
d) stseT for noisehda ;detaroprocni dna
e) stnemeriuqeR for storage, ,gnildnah noitatropsnart dna noitallatsni of denil tnempiuqe .dedulcni
ehT esu of dezicitsalp CVP gninil as a noitcetorp tsniaga noisorroc has neeb a part of lamron lairtsudni ecitcarp
for ylraen two decades. CVP has egatnavda of gnieb a hguot noisarba tnatsiser lairetam htiw tnellecxe ecnatsiser
ot lacimehc attack.
Of ,etal the esu of sheet scitsalpomreht si no the esaercni ana SI gmeb accepted as a dednemmocer ecitcarp tor
the gninil of .slessev ehT dradnats sedivorp for gninil of slessev dna tnempiuqe for lacimehc processes htiw
sheet .scitsalpomreht
ehT gninil yam eb deilppa rehtie yb ,gnihsurb gniyarps or deilppa ni the mrof of a sheet. gniniL deilppa ylno ni
the mrof of sheet are derevoc ni siht .dradnats
ylraE noitatlusnoc dna egnahcxe of noitamrofni dluohs take ecalp neewteb the gninil rotcartnoc dna I& seitrap
denrecnoc ni the ,ngised ,erutcafunam noitcere dna esu of slessev ot eb .denil
sihT dradnats has neeb deussi ni lareves parts. ehT other parts deussi ni siht seires :era
SI .oN Title

4682 Code of ecitcarp for gninil of slessev dna tnempiuqe for lacimehc :ssecorp

(Part 1) : 499I rebbuR gninil
(Part 2) : 1969 ssalG lemane gninil
(Part 3) : 1969 Lead gninil
(Part 5) : 1970 edixopE niser gninil
(Part 6) : 1970 cilonehP niser gninil
(Part 7) : 1974 noisorroC dna heat tnatsiser slatem
(Part 8) : 1974 suoicerP latem
(Part 9) : 1974 muinatiT
(Part 10) : 1974 kcirB dna elit
nI the noitaraperp of siht ,dradnats ecnatsissa has neeb devired morf SB 6374 (Part 1) : 589I gniniL‘ of tnempiuqe
htiw ciremylop slairetam for the process :seirtsudni Part I_ noitacificepS for gninil htiw sheet ,’scitsalpomreht
deussi yb the sdradnats~hsiti-iB .noitutitsnI
roF the esoprup of gnidiced whether a ralucitrap tnemeriuqer of siht dradnats si deilpmoc ,htiw the lanif ,eulav
devresbo or ,detaluclac gnisserpxe the tluser of a test or ,sisylana llahs eb dednuor off ni ecnadrocca htiw SI 2 :
1960 seluR‘ for gnidnuor off laciremun seulav (revised)‘. ehT rebmun of tnacifingis secalp deniater ni the
dednuor off eulav dluohs eb the emas as that of the deificeps eulav ni siht .dradnats
SI 4682 ( Part 4 ) : 1998
Indian Standard
CODEOFPRACTICEFORLININGOFVESSELS
ANDEQUIPMENTFORCHEMICALPROCESSES
PART 4 LINING WITH SHEET THERMOPLASTICS
First Revision )
(
SECTION 1 GENERAL 3.3 Thermoset
1 SCOPE A citsalp ,hcihw nehw deruc yb heat or yb other ,snaem
segnahc otni a yllaitnatsbus elbisufni dna elbulosni
1.1 sihT traP(dradnats 4) seificeps stnemeriuqer for
.tcudorp
the gninil of tnempiuqe for the process seirtsudni gnisu
sheet .scitsalpomreht NOTE - This term includes both thermosetting plastics and
thermoset plastics.
1.1.1 tI sedulcni stnemeriuqer for the eciohc of gninil 3.4 Purchase?
dna sti .noitacilppa tI osla sedulcni stnemeriuqer for
noitcepsni of the gninil dna the noitacifitcer of .stluaf ehT noitazinagro or laudividni who syub the denil
tT seilppa ot tnempiuqe detacirbaf ni latem or etercnoc tnempiuqe for sti nwo esu or as na tnega for the .renwo
dna ot htob dednob dna esool .sgninil
3.5 Fabricator’
NOTE -The linings may be applied at the applicator’s works
ehT noitazinagro or laudividni elbisnopser for the
or on site.
noitacirbaf of the tnempiuqe ot eb .denil
1.1.2 stnemeriuqeR for ngised dna noitacirbaf of the
tnempiuqe dna the state of ,noitaraperp yrassecen for 3.6 Applicator’)
the secafrus ot eb ,denil are deificeps ni noitces two.
ehT noitazinagro or laudividni elbisnopser for the
1.1.3 stnemeriuqeR for storage, ,gnildnah noitacilppa eht-fo .gninil
noitatropsnart dna noitallatsni of the denil tnempiuqe
3.7 Inspection Authority’)
are osla deificeps ni noitces .thgie
ehT ydob or noitaicossa detnioppa yb the resahcrup (or
2 SECNEREFER
)renwo ot check that the ,ngised noitacirbaf dna gninil

ehT naidnI sdradnatS detsil ni xennA A are yrassecen ylpmoc htiw siht .dradnats

stcnujda ot siht .dradnats 3.8 Lining
3 SNOITINIFED scitsalpomrehT deilppa as sheet sgninil hcihw yant or
yam ton eb dednob ot the .etartsbus
3.0 roF the esoprup of siht dradnats the gniwollof
snoitinifed llahs .ylppa NOTE - Although in common usage rhe terms ‘lining’ and
‘coating’ are mtcrchanpable, in this document ‘lining’ will be
3.1 citsalP used.
A lairetam that sniatnoc as na laitnesse tneidergni a 3.9 Cure
hgih remylop dna hcihw at emos stage ni sti gnissecorp ehT lacimehc noitcaer gnitluser ni eht- lanif
otni dehsinif stcudorp nac eb shaped yb .wolf deziremylop .tcudorp
NO’TE-- Elastomeric materials, which are also shaped by flow, 3.10 elohniP
arc not conqidcrcd as plastics.
3.2 niseR A llams defect ni the gninil that dluow timrep
noisorroc of the etartsbus rednu the snoitidnoc for
A ,dilos ,dilosimes or dilosoduesp cinagro lairetam
hcihw the gninil si .dengised
that has na etinifedni dna netfo hgih evitaler ralucelom
,ssam stibihxe a ycnednet ot wolf nehw detcejbus ot NOTE - The word ‘pinhole’ is synonymous with ‘holiday’
and ‘port’.
stress, yllausu has a gninetfos or gnitlem egnar ,dna
yllausu serutcarf .ylladiohcnoc nI a daorb ,esnes the I) Where the word ‘purchaser’, ‘fabricator’, ‘applicator and
‘inspection authority’ occur in the text, they are intended also to
mret si desu ot etangised yna ,remylop that ,si a cisab
include representatives of the purchaser, fabricatoi, applicator and
lairetam for .scitsalp inspection authority.
SI 4682 ( Part 4 ) : 1998
3.11 Blister 5 COMPLIANCE
A gas or diuqil dellif ytivac nihtiw the gninil lairetam
5.1 Fabricator
or neewteb the gninil dna .etartsbus
ehT rotacirbaf llahs ylpmoc htiw the :gniwollof
4 EGNAHCXE FO NOITAMROFNI
a) noitceS 2 [see 4.1(a)],
4.1 ylraE noitatlusnoc llahs eb degnarra neewteb lla )b stnemeriuqeR nevig ni 16.1 (a) dna ,)b( dna
seitrap denrecnoc htiw the noitacilppa of siht ,dradnats c) noitceS 8 as agreed ni 4.1 (w).
ot hsilbatse the gniwollof noitamrofni hcihw llahs eb
ylluf .detnemucod htoB the evitinifed stnemeriuqer 5.2 Applicator
deificeps ni siht dradnats dna the detnemucod smeti ehT rotacilppa llahs ylpmoc htiw the :gniwollof
llahs eb deifsitas erofeb mialca of ecnailpmoc htiw the
a) noitceS 3 tub( see ;)1.21
dradnats nac eb edam dna .deifirev
)b noitceS ;4
a 1 ngiseD dna noitacirbaf sliated of the -piuqe c) stnemeriuqeR nevig ni 16.1(c), (d), (e) dna ;)f(
tnem ot eb denil dna noisivorp of sgniward (see d) noitceS ;6
7 dna 8 or 9 dna 10). e) noitceS ;7 dna
)b sliateD of gasket slairetam (see 7.9 dna 7.10). f) noitceS 8 as agreed ni 4.1 (w).
C) sliateD of the stnetnoc of the slessev or -piuqe
,tnem gnidulcni trace slairetam [see 11.2 (a)]. SECTION 2 DESIGN, FABRICATION AND
4 ehT ngised erutarepmet [see 11.2 .])b( SURFACE FINISH OF EQUIPMENT TO BE
)e ehT ngised erusserp [see 11.2 .l)c( LINED
f) ehT sliated of yna sdilos ot eb deldnah [see
6 GENERAL
11.2(e)].
g> ehT sdohtem of gnitaeh ro/dna gnilooc [see 6.1 ehT cisab ,ngised noitacirbaf dna gnitset for
11.2 .])b( lacinahcem ytilibailer of the tnempiuqe ot eb denil
)h gninaelC ,sdohtem for ,elpmaxe water -hsaw llahs eb deirrac tuo ot etairporppa naidnI dradnatS dna
,gni tnevlos ,gnihsaw gniliob tuo or gnimaets llahs ylpmoc htiw 7 dna 8 or 9 dna ,OI as etairporppa
[see 11.2 (a)]. erofeb the gninil noitarepo .secnemmoc
)j erehW the gninil work lliw eb .enod
7 DESIGN OF METAL EQUIPMENT TO BE
k) etiS snoitidnoc that yam affect the work, for
LINED
,elpmaxe ytilibaliava of .secivres
lm ynA laiceps stnemeriuqer for slairetam desu ni 7.1 tnempiuqE ot eb denil llahs eb yltneiciffus digir
tsalb gninaelc [see 14.1.4 dna 14.2.31. that there si on ytilibissop of noitamrofed hcihw dluow
)n ehT epyt of lairetam ot eb desu for gninil (see tluser ni egamad ot the gninil gnirud ,noitatropsnart
noitallatsni dna .noitarepo nehW sreneffits are
11.1).

P) ehT muminim ssenkciht of the gninil dna ,deriuqer yeht llahs yllamron eb deilppa ot the denilnu

where elbacilppa the mumixam ssenkciht (see edis of the .tnempiuqe
12.2).
7.2 ehT stnemegnarra for the gnitfil of tnempiuqe
(1) ehT ytilibatius of the evisehda fi the gninil si llahs eb denimreted at the ngised stage.
ot eb dednob ot the etartsbus (see 12.3).
r) nehW the gninil si ot eb deilppa edistuo the 7.3 ehT ngised of lla tnempiuqe llahs wolla for access
s’rotacilppa works dna the evisehda as deilppa gnirud the noitaraperp of the ecafrus dna noitacilppa
sniatnoc ,stnevlos sepyteht of stnevlos llahs eb of the gninil dna for gnitnev of semuf devlove gnirud
stated, together htiw rieht hsalf ,stniop dna the .noitarepo
dlohserht timil .seulav
7.3.1 nI yletelpmoc desolcne slessev there llahs eb at
s) ehT deificeps evisehda metsys (see 12.3 dna
tsael eno elohnam that after gninil seilpmoc htiw SI
.)SI
S.Il5282 803 dna eno lanoitidda hcnarb of ton ssel naht
t) ehT noisivorp of test setalp (see 12.1.2 dna
75 mm erob ot timrep etauqeda noitalucric of .ria
17.4.2).
)u ehT muminim dna mumixam elbawolla NOTE - It is recommended that, where practic&Je, the
minimum diameter of a manhole should be 600 mm.
erutarepmet hcihw si deriuqer for the correct
noitacilppa of a gninil gnidulcni the gniruc of 7.4 deteviR snoitcurtsnoc llahs ton eb .desu
the evisehda fi desu (see 15).
7.5 detloB stnioj llahs eb dettimrep ylno fi yeht nac
)v noitcepsnI serudecorp/seuqinhcet ot eb eb. deltnamsid for .gninil
deyolpme ecnatpecca slevel- dna stages of
noitcepsni (see 16 dna X7). 7.6 secafruS ot eb denil llahs eb of a htooms .ruotnoc
w) ,gnildnaH ,tropsnart storage dna noitallatsni
7.7 ,seitiunitnocsiD seciverc dna sharp snoitcejorp
erudecorp [see 11.2(g) dna 20.1 ot 20.71.
llahs eb .dediova
IS 4682 ( Part 4 ) : 1998
7.8 sgnittiF that evah ot eb dellatsni after the of selzzon hguorht hcihw gnitaeh ,slioc etc, retne
noitelpmoc of the gninil process llahs eb dengised ot ,tnempiuqe a rellams ecnaraelc si dettimrep dedivorp
eb denil or detacirbaf morf slairetam that lliw ton eb that the erutarepmet of the epip hguorht the elzzon
affected yb the process .snoitidnoc does ton exceed .C°08 nI on case llahs siht ecnaraelc
eb ssel naht 25 .mm
7.9 yllamroN lla snoitcennoc ot denil parts of
tnempiuqe llahs eb .degnalf fI for yna nosaer screwed 7.11.1 diulF decudortni hguorht sparger sepip or pid
snoitcennoc are ,deriuqer neht these parts llahs eb sepip llahs ton egnipmi yltcerid no ot the .gninil
detacirbaf ni noisorroc tnatsiser .slairetam lanretxE gnitaeh of tnempiuqe llahs ton eb dettimrep
tuohtiw lluf noitatlusnoc htiw the rotacilppa of the
7.10 llA selzzon dna steltuo llahs eb as short as .gninil
,elbissop thgiarts dna .degnalf egnalF faces llahs evah
a nialp ecafrus ot wolla the gninil ot eunitnoc revo the 7.12 ehT ngised of epip work llahs eb hcus as ot wolla
face. ydaer access ot sdlew dna sdneb for dlew dna ecafrus
noitaraperp dna timrep the gnittif of dedurtxe srenil
7.11 gnitaeH ,slioc noisremmi heaters dna sparger (see .giF 1).
sepip llahs eb dellatsni after the noitelpmoc of the
7.12.1 metsyS llahs eb edam pu morf thgiarts shtgnel
gninil process dna llahs eb detacol so that on part si
htiw separate sdneb dna tees.
resolc naht 100 mm morf a denil .ecafrus nI the case
(e)

(b)
(d) )h(
NOTE -The details shown in (a), (b) dna (c) are permissible; those shown in (d), (e), (f), (g) dna (h) are ton permissible.
.GIF 1 PIPEWORKDETAILS

3
IS 4682 ( Part 4 ) : 1998
7.13 ehT ngised of tnempiuqe llahs eb hcus that there
si ysae dnah access ot areas where citsalpomreht sheets
deen ot eb .dedlew
8 NOITACIRBAF FO LATEM TNEMPIUQE
OT EB DENIL (a) Weld flat and smooth
8.1 llA sdlew llahs eb suounitndc no secafrus ot eb
.denil ylnO ttub stnioj llahs eb dettimrep no secafrus
ot eb denil
8.1.1 hctitS ,gnidlew spot gnidlew dna other
suounitnoc-non gnidlew processes llahs ton eb .desu (b) Weld flat and smooth
8.2 dleW secafrus llahs eb .htooms emoS gnidlew
serudecorp edivorp secafrus of etauqeda ssenhtooms
,tub ni other cases secafrus llahs eb dnuorg yllohw or
yltrap ot evomer dlew .selppir ehT gnidnirg process
llahs eb enod so that the gniniamer dlew does ton evah
sharp edges.
8.3 gnidleW serudecorp llahs eb nesohc ot diova (c) Weld convex and smooth
ytisorop no the edis of the dlew ot eb .denil
NOTE - It si elbareferp taht gnippac smtr era deilppa ot eht
gninil edis ni redro ot eziminim siht .tceffe
8.3.1 llA sdlew llahs eb free morf the gniwollof
ecafrus :stcefed
a) ,gnittucrednU
)b Cracks,
(d) Weld concave and smooth
c) ,ytisoroP
d) ynA other epyt of ecafrus ,ytivac dna
e) Lack of .noisuf
8.3.2 dleW defects that are exposed rehtie no laitini
noitcepsni or after tsalb gninaelc llahs eb .deriaper

8.3.3 sriapeR llahs eb yb gnidnirg or yb gnidlew htiw(
or tuohtiw tneuqesbus )gnidnirg dedivorp that the
(e) Weld undercut
stnemeriuqer for tnempiuqe ngised dna noitacirbaf are
.tem
8.4 dleW eliforp sI&ed llahs eb yllareneg ni
ecnadrocca htiw .giF 2 ot 6.
NOTE - tcerrocnI sliated era osla .detartsulli
8.5 relliF ,slairetam hcus as ,niser ,seittup srellif dna
wol gnitlem tniop sredlos dna ,sezarb llahs ton .desueb
(f) Excessive weld penetration
8.6 Before the tnempiuqe si passed for ,gninil lla
stnemhcatta ot eb edam yb ,gnidlew for ,elpmaxe
gniggal staelc dna gnitfil ,sgul llahs eb .etelpmoc
8.7 llA gnillird llahs eb detelpmoc erofeb the
tnempiuqe si passed for .gninil
8.8 nehW the gninil si ot eb demrof-omreht at ,srenroc
(g) Improper grinding
those srenroc llahs eb dehsinif ot a suidar of ton ssel
naht 5 .mm nehW the gninil si ot eb dedlew at ,srenroc
NOTE -The details shown in (a) dna (b) are permissible;
those srenroc llahs eb dehsinif ot a suidar of a lanimon those shown in (c), (d), (e), (f) dna (g) are ton permissible.
1.5 mm. !:.GIF WELDPROFILEDETAILS;BUTTWELDS
4
IS 4682 ( Part 4 ) : 1998
8.9 All ,gals rettaps-itna sdnuopmoc or ralimis
slairetam llahs eb .devomer
8.9.1 llA dlew spatter llahs eb devomer yb gnippihc
ro/dna .gnidnirg
8.10 ecafruS defects hcus as scores, gnittip dna gnillor
defects, llahs eb devomer yb ,gnidnirg or where
yrassecen deriaper yb gnidlew dedivorp that the
stnemeriuqer of ngised dna noitcurtsnoc are .tem
8.11 gnitatoR parts llahs eb decnalab erofeb dna after
.gninil
9 DESIGN OF CONCRETE EQUIPMENT TO
BE LINED
9.1 tslihW ti si ton elbissop ot etanimile egaknirhs
cracks ni ,etercnoc the ngised llahs eb hcus that
larutcurts gnikcarc si .detanimile ralucitraP noitnetta
llahs eb diap ot gnidiova gnikcarc eud ot lamreht
stresses. nI the case of esool ,srenil tnempiuqe llahs eb
dengised ot SI 456. nI the case of dednob ,srenil
tnempiuqe llahs eb dengised ot SI 3370 (Parts 1 ot 4).
9.2 fI yrassecen extra stnemecrofnier llahs eb desu
dna noitcurtsnoc stnioj treated so as ot etomorp a dnob
neewteb tnecajda areas of .etercnoc noisnapxE stnioj
create laiceps smelborp ni gninil dna llahs ton eb desu
tuohtiw noitatlusnoc neewteb the resahcrup dna the
rotacilppa of the .gninil
9.3 sepiP dna sgnittif llahs eb dengised htiw elddup
segnalf dna cast otni the .etercnoc erehW elbissop
sepip dna sgnittif llahs rehtie eb of the emas lairetam
as the renil so that a dlew yam eb edam neewteb the
renil dna the gnittif or dengised so that the gninil yam
eb deirrac hguorht the .gnittif fI siht si ton elbissop the
gnittif llahs eb dengised so that a lacinahcem tnioj nac

eb edam neewteb the gnittif dna the .gninil nI the rettal

case the gnittif llahs eb of a tnatsiser-noisorroc
b
.lairetam
9.4 ehT stnemegnarra for the gnitfil of tnempiuqe
llahs eb denimreted at the ngised stage.
9.5 ehT ngised of lla tnempiuqe llahs wolla for access
gnirud the noitaraperp of the ecafrus dna noitacilppa
of the gninil dna for gnitnev of semuf devlove gnirud
the .noitarepo
9.5.1 nI yletelpmoc desolcne slessev there llahs eb at
tsael eno elohnam dna eno lanoitidda hcnarb of ton ssel
naht 75 mm erob ot timrep etauqeda noitalucric of .ria
NOTE - tI si dednemmocer ,taht erehw ,elbacitcarp eht
muminim retemaid fo n elohnam dluohs eb 006 mm
9.6 llA srenroc llahs eb dengised ot eb demrof htiw a
(e) 45” tellif htiw a muminim gel htgnel of 20 .mm
NOTE-The details shown in (a), (b), (c) dna (d) are 9.7 llA tnempiuqe ot eb decalp woleb dnuorg level or
permissible; those nwohs in (e) are ton permissible.
tcejbus ot lanretxe water erusserp llahs eb dedivorp
.GIF 3 WELD PROFILED ETAILS:E XTERNAL htiw a waterproof reirrab no the edistuo of the
CORNERSA ND EDGES .tnempiuqe