HDPE Procedure

8/11/2019 HDPE Procedure

1/32

METHOD STATEMENT

for HPDE

DYNAMIC INDUSTRIAL ENGINEEING LLC

PROJECT

igh-density polyethylene

( DPE)PIPE WORK

PROCEDURE FOR WELDING ND IN!"LL"ION -

#$%&'DE'P$&'(#&'R&

Revision History

NoticeAll rights reserved. These materials are confidential and proprietary of Dynamic

Engineering. No part of these materials should be reproduced, published inany form by any means (electronic or mechanical, including photocopy or anyinformation storage or retrieval system), nor should the materials be disclosedto third parties without express written authorization of ynamic !ngineering.

MS HDPE Pipe Work PROJ.5180 DE.P10.950.R0 Page 1 of 32

" 27/03/13 HDPE PIPE WOR Wa!i"##a$%ee!$a&'()'* M&gr

+a$a,-r $a&Ma&agi&gDireor

RevNo

Date Description Prepared By Approved By


2/32

METHOD STATEMENT

for HPDE

TABLE OF CONTENTS

1. Sope e&era# Proi!io&!

1.1 Sope1.2 e&era# Oerie4

1.3 Re!po&!i6i#iie!

2. Refere&e!

3. er! Defi&iio&!

. Safe: ;ir!

.1 Safe: (#er!

.2 Rea, a&, -&,er!a&,

.3 e&era# Safe:

. Wear Safe: E


3/32

METHOD STATEMENT

for HPDE

.20 rak)!ar ;-!io& a$i&e

.21 rak)Sar a$i&e o4i&g

.22 PPE

.23 -ar,i&g agai&! !ai e#erii: a&, ga!eo-! Ig&iio&!

5. '-a#i: *o&ro#

=. Sorage $a&,#i&g

=.1 Sorage

=.2 Ha&,#i&g

7. I&!a##aio& I&!r-io&!

7.1 Work ;#o4 *$ar

7.2 (e!!orie! a&, Speia# oo#!

7.3 +efore Sar

8. (pp#iaio&!

8.1 We#,i&g *o&,iio&!

8.2 Pipe (#ig&e&

8.3 Preparaio& of Pipe E&,!

8. We#,i&g Paraeer!

8.5 Heai&g of S-rfae

8.= ;-!io& of S-rfae

8.7 Ho#,i&g

8.8 *oo#i&g of S-rfae

9. I&!peio&

9.1 We#,i&g *$ek!

9.2 Defe! a&, *a-!e!

9.3 R-#e! for +- We#, ;-!io&

9. Repor

10. Pre!!-re e!i&g

10.1 Pre!!-re e!i&g O-!i,e $e re&$

10.2 Pre!!-re e!i&g I&!i,e $e re&$



4/32

METHOD STATEMENT

for HPDE

1 SCOPE ! "ENERAL PRO#$S$ON

1%1 Scope

$e !ope of $i! o,e# !peifiaio& i! for -&iipa# 4aer pipe#i&e! 4$i$ o&for

o (WW( !a&,ar,!. $i! o,e# !peifiaio& proi,e! i&i- re a&, f-!e i&o a

pera&e&@ $ooge&eo-! o&o#i$i ?oi&. DBC(MI* ICD"SRI( ECICEERIC

* pipe f-!io& proe,-re re


5/32

METHOD STATEMENT

for HPDE

Ma&ager or $ig$er a&agee&. M-! rai!e C*R if $e 4ork i! fa## o- of $e

aepa6#e rieria. eep fo##o4)-p! 4i$ $e orreie aio&!.

We#,er F S$a## Prepare $e We#, ?oi& a&, keep 4e#,i&g paraeer! a! !peifie, i&

$e 4e#,i&g proe,-re. M-! fo##o4 !afe: ea!-re a&, prea-io&! !ri#:.

& REFERENCES

o $e e>e& refere&e, i& $i! !peifiaio& !eio&@ $e !a&,ar,! a&, ,o-e&! #i!e,

6e#o4 are i-,e,@ a&, a,e a par of $i! !peifiaio&.

I& $e ee& of a o&f#i@ $e re


6/32

METHOD STATEMENT

for HPDE

A (SM ;117 Sa&,ar, e! Me$o, for I&!a##aio& (epa&e of P#a!i rai: Se4er

i&e! "!i&g o4)Pre!!-re (ir

A (SM ; 21= Sa&,ar, Praie for ;ie#, eak e!i&g of Po#:e$:#e&e PE Pre!!-re

Pipi&g S:!e! "!i&g H:,ro!ai Pre!!-re

A (SM ;220= Sa&,ar, Speifiaio& for ;a6riae, ;ii&g! of +-);-!e, Po#:e$:#e&e

PE P#a!i Pipe@ ;ii&g!@ S$ee Sok@ P#ae Sok@ or +#ok Sok

A (SM D 2239 Sa&,ar, Speifiaio& for Po#:e$:#e&e PE P#a!i Pipe SIDRP +a!e,

o& *o&ro##e, I&!i,e Diaeer

A (SM D 2321 Sa&,ar, Praie for "&,ergro-&, I&!a##aio& of $erop#a!i Pipe for

Se4er! a&, O$er rai:);#o4 (pp#iaio&!

A (SM ; 2=20 Sa&,ar, Praie for Hea ;-!io& Joi&i&g of Po#:e$:#e&e Pipe a&,

;ii&g!

A (SM D 2=83 Sa&,ar, Speifiaio& for Soke):pe Po#:e$:#e&e ;ii&g! for O-!i,e

Diaeer)*o&ro##e, Po#:e$:#e&e Pipe a&, -6i&g

A (SM D 2737 Sa&,ar, Speifiaio& for Po#:e$:#e&e PE P#a!i -6i&g

A (SM D 277 Sa&,ar, Praie for "&,ergro-&, I&!a##aio& of $erop#a!i Pre!!-re

Pipi&g

A (SM D 32=1 Sa&,ar, Speifiaio& for +- Hea ;-!io& Po#:e$:#e&e PE P#a!i;ii&g! for Po#:e$:#e&e PE P#a!i Pipe a&, -6i&g

A (SM D 3350)08 Sa&,ar, Speifiaio& for Po#:e$:#e&e P#a!i! Pipe a&, ;ii&g!

Maeria#!.

+ TERMS ! DEF$NAT$ONS

MS HDPE Pipe Work PROJ.5180 DE.P10.950.R0 Page = of 32


7/32

METHOD STATEMENT

for HPDE

- SAFET. F$RST

-%1 Safet

y

A'erts

$i! $aar, a#er !ig& (ppear! i& $i! a&-a#. W$e& :o- !ee $i! !ig&@

aref-##: rea, 4$a i !a:!. BO"R S(;EB IS ( S(E.

Bo- 4i## !ee $e $aar, a#er !ig& 4i$ $e!e 4or,!

DAN"ER/ 0ARN$N"/ and CAT$ON.

I&,iae! a& ii&e: $aar,o-! !i-aio& 4$i$@ if &o aoi,e,@ 4i## re!-# i& ,ea$

or !erio-! i&?-r:.

I&,iae! a poe&ia##: $aar,o-! !i-aio& 4$i$@ if &o aoi,e,@ o-#, re!-# i& ,ea$or !erio-! i&?-r:.


OP$ O>for, P#a!i I&

PP$ P#a!i Pipe I&!i-e

A00A (eria& Waer Work! (!!oiaio&

ASTM (eria& Soie: of e!i&g a&, Maeria#!

FMS ;aor: M--a# Sa&,ar,!

NSF Caio&a# Sa&iaio& ;o-&,aio&

HDPE Hig$ De&!i: Po#:e$:#e&e

PE Po#:e$:#e&e

P#C Po#: i&:# *$#ori,e

D$ D-i#e Iro&

D$PS D-i#e Iro& Pipe Sie$PS Iro& Pipe Sie

CTS *opper -6e Sie

$D I&!i,e Diaeer

OD O-!i,e Diaeer

PS$ Po-&,! Per S


8/32

METHOD STATEMENT

for HPDE

I&,iae! a $aar,o-! !i-aio& 4$i$@ if &o aoi,e,@ a: re!-# i& i&or or o,erae

i&?-r:.

I& $i! a&-a# :o- !$o-#, #ook for 4o o$er 4or,!

NOT$CE and $MPORTANT%

NOT$CE5

*a& keep :o- fro ,oi&g !oe$i&g $a ig$ ,aage $e a$i&e or !oeo&e!

proper:. I a: a#!o 6e -!e, o a#er agai&! -&!afe praie!.

$MPORTANT5

*a& $e#p :o- ,o a 6eer ?o6 or ake :o-r ?o6 ea!ier i& !oe 4a:.

-%& Read and nderstand

Do &o operae f-!io& e


9/32

METHOD STATEMENT

for HPDE

(&:$i&g :o- !ee@ fee#@ !e##@ or $ear $a i! ,iffere& fro 4$a :o- e>pe@ or $a

:o- $i&k a: 6e -&!afe

-%- 0ear Safety E73ip6ent

Wear a $ar, $a@ !afe: !$oe!@ !afe: g#a!!e!@ a&, o$er app#ia6#e per!o&a#

proeio& ep#o!io& a&, ,ea$. W$e& operai&g i& a $aar,o-!

e&iro&e&@ $eaer !$o-#, 6e 6ro-g$ -p o epera-re i& a !afe e&iro&e&@ $e&

-&p#-gge, 6efore e&eri&g $e $aar,o-! ao!p$ere for f-!io&.

-%p#o!io& proof. Operaio& of $e!e opo&e&! i& a

$aar,o-! e&iro&e& 4i$o- &ee!!ar: !afe: prea-io&! 4i## re!-# i& e>p#o!io&

or ,ea$. W$e& operai&g i& a $aar,o-! e&iro&e&@ keep p-p oor a&, $a!!i!

i& a !afe area 6: -!i&g $:,ra-#i e>e&!io& $o!e!

-%= E'ectric Safety



10/32

METHOD STATEMENT

for HPDE

(#4a:! e&!-re po4er or,! are proper#: gro-&,e,. I i! ipora& o ree6er $a

4$e& :o- are 4orki&g i& a 4e e&iro&e& 4i$ e#eria# ,eie!@ proper gro-&,

o&&eio&! $e#p o i&iie $e $a&e! of a& e#eri !$ok.

;re Cr3s9 Points

H:,ra-#ia##: operae, ?a4! are operae, -&,er pre!!-re. (&:$i&g a-g$ i& $e ?a4!

4i## 6e r-!$e,. eep fi&ger!@ fee@ ar!@ #eg!@ a&, $ea, o- of $e ?a4 area. (#4a:!

$ek pipe a#ig&e& 4i$ a pe&i# or !ii#ar o6?e.

-%1? Facer B'ades Are S9arp

;aer 6#a,e! are !$arp a&, a& -. Ceer aep o reoe !$ai&g! 4$i#e $e

faer i! r-&&i&g@ or i! i& $e fai&g po!iio& 6e4ee& $e ?a4!. "!e are 4$e&

operai&g $e faer@ a&, $a&,#i&g $e -&i.

NOT$CE5

Di!o&&e po4er fro $e faer@ a&, reoe $e faer 6#a,e! 6efore aepi&g a&:

ai&e&a&e or a,?-!e&.

-%11 Heater is Hot

$e $eaer i! $o a&, 4i## 6-r& #o$i&g a&, !ki&. eep $e $eaer i& i! i&!-#ae,

$eaer !a&, or !#i&g 6#a&ke 4$e& &o i& -!e@ a&, -!e are 4$e& $eai&g $e pipe.

NOT$CE5



11/32

METHOD STATEMENT

for HPDE

"!e o: a #ea& &o&)!:&$ei #o$ !-$ a! a oo& #o$ o #ea& $e $eaer p#ae!

-%1& F3sion Proced3re

;o##o4 $e proe,-re! aref-##:@ a&, a,$ere o a## !peifie, paraeer!. ;ai#-re o

fo##o4 proe,-re! o-#, re!-# i& a 6a, 4e#,. (#4a:! fo##o4 $e proper f-!io&

proe,-re!.

-%1+ nits 0it9 "as En4ines

Ha&,#e f-e# 4i$ are. ;-e# i! $ig$#: f#aa6#e. Do &o ref-e# $e a$i&e 4$i#e

!oki&g or &ear ope& f#ae! or !park!. (#4a:! !op $e e&gi&e 6efore ref-e#i&g

a$i&e. ;i## f-e# a&k o-,oor!. He#p pree& fire! 6: keepi&g a$i&e #ea& of

a--#ae, ra!$@ grea!e@ ,e6ri!@ a&, faer !$ai&g!. (#4a:! #ea& -p !pi##e, f-e#.

+rea$i&g e>$a-! ga!e! a& a-!e !ik&e!! or ,ea$. (#4a:! operae a$i&e

o-,oor! i& a& area 4i$ a,ep#o,i&g ga!e! fro 6aer: o-#, a-!e 6#i&,&e!! or !erio-!

i&?-r:. eep !park!@ f#ae! a&, igaree! a4a:.-%18 Have Tiers Proper'y Serviced

;ai#-re o fo##o4 proper proe,-re! 4$e& o-&i&g a ire o& a 4$ee# or ri a&

pro,-e a& e>p#o!io& 4$i$ a: re!-# i& !erio-! i&?-r: or ,ea$. Hae ire! o-&e,

6: !oeo&e $a i! e>perie&e,@ a&, $a! $e e


12/32

METHOD STATEMENT

for HPDE

I&orre $eai&g epera-re a& re!-# i& 6a, f-!io& ?oi&!. *$ek $eaer p#ae

!-rfae epera-re perio,ia##: 4i$ a p:roeer@ a&, ake &ee!!ar: a,?-!e&!.

$e $eroeer o& $eaer! i&,iae! i&er&a# epera-re@ a&, !$o-#, 6e -!e, a! a

refere&e o:

-%1 eep Mac9ine A)ay fro6 Ed4e of Ditc9

Hea: e


13/32

METHOD STATEMENT

for HPDE

W$e& operai&g a$i&e for ore $a& fo-r $o-r! per ,a:@ 4ear $eari&g proeio&.

Wear PPE ,-ri&g operaio& 4ork! a a## ie. (! !peifie, i& Safe: proe,-re!.

-%&+ Safety Preca3tions For "3ardin4 A4ainst Static E'ectricity And "aseo3s

$4nition

Po#:e$:#e&e p#a!i pipe ,oe! &o rea,i#: o&,- e#erii:. ( !ai e#erii:

$arge a& 6-i#,-p o& i&!i,e a&, o-!i,e !-rfae! a&, !a: o& $e pipe !-rfae -&i#

!oe gro-&,i&g ,eie@ !-$ a! a oo# or a per!o& oe! #o!e e&o-g$ for $e !ai

e#erii: o ,i!$arge o $e gro-&,i&g ,eie.

Di!$argi&g o&e par of $e pipe !-rfae 4i## &o affe o$er $arge, area! 6ea-!e

!ai e#erii: ,oe! &o f#o4 rea,i#: fro o&e area o a&o$er. Po#:e$:#e&e pipe

a&&o 6e ,i!$arge, 6: aa$i&g gro-&,i&g 4ire! o $e pipe.

Heaer!@ e#eri faer! a&, e#eri po4er oo#! are CO e>p#o!io& proof.

Sai e#erii: ,i!$arge a& ig&ie a f#aa6#e ga! or o6-!i6#e ,-!

ao!p$ere.

( !ai e#erii: ,i!$arge o a per!o&@ a oo#@ or a gro-&,e, o6?e #o!e o $e pipe

!-rfae a& a-!e a& e#eri !$ok or a !park $a a& ig&ie a f#aa6#e ga! or

o6-!i6#e ,-! ao!p$ere a-!i&g fire or e>p#o!io&.

I& ga! -i#i: app#iaio&!@ !ai e#erii: a& 6e a poe&ia# !afe: $aar,. W$ere a

f#aa6#e ga!)air i>-re a: 6e e&o-&ere, a&, !ai $arge! a: 6e pre!e&@

!-$ a! 4$e& repairi&g a #eak@ !er&a# oeri&g !$o-#, 6e kep 4e 6: oa!io&a# re)

4ei&g 4i$ a&i)!ai !o#-io&. $e oeri&g or ape !$o-#, 6e !-ia6#: gro-&,e,

!-$ a! o a ea# pi& ,rie& i&o $e gro-&,.



14/32

METHOD STATEMENT

for HPDE

Sep! $a ,i!$arge $e o-er !-rfae ,o &o ,i!$arge $e i&&er !-rfae of $e pipe.

Se&!io& $o!e! o operae -pper

4ork! i& $aar,o-! area.

Do not-!e a 6- f-!io& a$i&e 4i$ a& e#eri faer i& a ga!eo-! e&iro&e&.

"!e a a$i&e ei- a##o4e, for $e app#iaio&.

"!e 50N ; for 6- f-!io& a&, 510N ; for !a,,#e f-!io& a&, !oke f-!io&. $e!e are

!-rfae epera-re!. $e $ig$ !i,e epera-re! are -!e, o ope&!ae for $e

,rop i& epera-re e>perie&e, 4$e& $eaer i! -&p#-gge, fro $e po4er !o-re o

ake f-!io& i& $aar,o-! area. "&p#-g $eaer prior o -!i&g i& a $aar,o-!

e&iro&e&.

Do not,ri## $o#e fir! prior o aki&g a !a,,#e f-!io&.

W$e& preppi&g $e ai& pipe for a !a,,#e f-!io&@ ,o &o -!e a& e#eri gri&,i&g oo#.

Prepare ai& pipe a&-a##: 6: -!e of 50)=0 gri -i#i: #o$.

Do not-!e a& e#eri ,ri## for p-&$i&g $o#e $ro-g$ afer !a,,#e f-!io& $a! 6ee&

a,e.

"!e :o-r !e&!e! a&, goo, ?-,ge& i!e&@ Se##@ ;ee#@ See a&, Repor a&: -&!afe

!i-aio&! :o- !ee or !ee oi&g o :o-r o&!ie o&a@ if orreie aio& i! &o

ake& i& :o-r opi&io&@ Do &o e&er i&o $e !i-aio&.

8 AL$T. CONTROL

'-a#i: f-!io& re


15/32

METHOD STATEMENT

for HPDE

a& pro,-e poor po!e $e!e#e! or o$er o $aar,!.

;e,era# !afe: reg-#aio&! re


16/32

METHOD STATEMENT

for HPDE

Do &o a6-!e $e faer 4$e& fai&g pipe! 6: -!i&g oo -$ pre!!-re.

W$e& p-##i&g pipe $ro-g$ $e f-!io& ea#: a! :o- #ike or :o-


17/32

METHOD STATEMENT

for HPDE

(## pipe! !$a## 6e $a&,#e, a&, !ore, i& op#ia&e 4i$ $e a&-fa-rerQ!

reoe&,aio&! !-6?e o $e fo##o4i&g #iiaio&!

Pipe! !$a## 6e ra&!pore,@ $a&,#e, a&, !ore, 4i$ !-$ paki&g a&, i& !-$ a

a&&er $a ,aage ,oe! &o o-r a&, $a o&a i! aoi,e, 4i$ !$arp e,ge!

4$i$ a: a-!e ,aage. D-ri&g ra&!i@ pipe! a&, fii&g! !$a## 6e 4e## !e-re, a&,

a,e


18/32

METHOD STATEMENT

for HPDE

:%& Hand'in4 (Liftin4*

Ea$ !ie 4i## e!a6#i!$ Safe Operai&g Proe,-re! SOP! for reeii&g@ off)#oa,i&g@

a&, !orage of HDPE pipe o e&!-re $a

A ( #oa, i&!peio& $ek#i! $a! 6ee& op#ee, o erif: $e #oa, $a! 6ee& !$ippe,

aor,i&g o opa&: !$ippi&g re


19/32

METHOD STATEMENT

for HPDE

A HDPE pipe i! !ore, &o ore $a& 4o pipe! $ig$ for 10L ,iaeer or #arger pipe@

a&, &o ore $a& 4o fee for !a##er ,iaeer pipe@ -e!! $ere are e&gi&eeri&g

o&ro#! i& p#ae o o&ro# $e po!!i6i#i: of a !ak o##ap!i&g.

A (& HDPE Pipe Peri 4i## 6e op#ee, prior o p-##i&g/oi&g pipe.

A Ea$ !ie 4i## e!a6#i!$ SOP! for p-##i&g/oi&g of HDPE pipe.

A (## eepio& i! approe,. $i! i-,e!

p-##i&g #e&g$! of pipe#i&e 4$i#e f-!i&g i& a f-!i&g #a: ,o4& area. I i! $o4eer@

aepa6#e o -!e a !#i&g o #if a&, po!iio& pipe i.e. po!iio&i&g a pipe#i&e i& a f-!i&g

a$i&e or reoi&g i fro $e f-!i&g a$i&e. I&ra&e)po!e, ,o-e& i! $e

o&ro##e, op:. erif: pri&e, ,o-e& i! !i## -rre& prior o -!eA Pipe)!#oi&g@ or -i&g a !#o or !$ape i& $e pipe#i&e@ o 6e -!e, a! a& a&$or

poi& for p-##i&g/oi&g a& HDPE pipe#i&e of a ,iaeer 12L or #arger i! CO

aepa6#e -e!! a& e>epio& i! approe,.

A (## gro-&, per!o&&e# -! 6e po!iio&e, o- of $e #i&e of fire 4$e& pipe i! 6ei&g

p-##e, or oe,. If $e i&i- ,i!a&e of 50 fee a&&o 6e e@ $e& !-6!a&ia#

6arrier! -! 6e -i#ie,.

A Safe: 4a$er! a&, 6#oker! 4i## 6e e!a6#i!$e, for p-##i&g/oi&g of pipe o& $a-#

roa,! or 4$ere $ere i! poe&ia# f or i&eraio& 4i$ o$er raffi a! ,eeri&e, 6:

ri!k a!!e!!e& of $e a!k.

A HDPE pipe p-##! 4i## CO e>ee, gra,e! greaer $a& 17.5 4i$o- a& approe,

e>epio&.

A E!or! a&, rai#i&g e$i#e! -! 6e -!e, if pipe p-##i&g o-r! i& aie i&i&g

area!. S$e,-#i&g a&, o-&iaio& of pipe oee& aiiie! -! 6e

op#ee,.



20/32

METHOD STATEMENT

for HPDE


21/32

METHOD STATEMENT

for HPDE

E>er&a#/I&er&a# ,e)6ea,i&g oo#

+ea, ga-ge

Digia# $eroeer 4i$ !-rfae pro6e o $ek $eaer p#ae.

Pipe e&, oer!

+a!e6oar,

Pipe -er!

(ir epera-re $eroeer

I&,e#i6#e arker pe&

ier.

e!! 4a##

i!a#ig&e&.

Reoe S-rfae ,aage a pipe e&,! $a o-#, oproi!e $e ?oi&i&g

!-rfae or i&erfere 4i$ f-!io& oo#! or e


22/32

METHOD STATEMENT

for HPDE

!ii#ar ,eie. Ope& pipe e&,! !$o-#, 6e oere, 4i$ p#-g! or oer! o

proe $e $eaer fro -&aepa6#e epera-re ariaio&!. Proeie

ea!-re! 4i$ a->i#iar: $eai&g i! reoe&,e, 4$e& epera-re! are

6e#o4 )N; )20N*.

Pipe and Fittin4 S3rface PreparationF $e pipe a&, fii&g !-rfae! o 6e

K?oi&e,L or $e#, i& #ap! !$a## 6e ,r: a&, #ea& a&, free of ie@ fro!@ !&o4@

,ir@ a&, o$er o&ai&aio&. (fer reg-#ar proe,-re for fai&g@ $e !-rfae

!$a## 6e proee, fro o&ai&aio& -&i# ?oi&e,

Heatin4F *$ek $e epera-re of $e $eai&g oo# reg-#ar#: 4i$ a

p:roeer or o$er !-rfae epera-re ea!-ri&g ,ei!e. Do &o i&rea!e

$eai&g oo# epera-re a6oe $e !peifie, epera-re 50N; ) 232N*

!ei&g. Work


23/32

METHOD STATEMENT

for HPDE

$e 4e#,i&g o&e -! 6e proee, fro -&!-ia6#e 4ea$er o&,iio&! e.g.

$-i,i: effe!@ 4i&, a&, epera-re! 6e#o4 0N*. $e !-rfae! o 6e ?oi&e, -!

6e -&,aage, a&, free fro ip-riie! or #oo!e pari#e!.

$e a&-fa-rer of $e HDPE pipe !$o-#, 6e a!ke, o !-pp#: !peifi

Reoe&,aio&! for 4e#,i&g of $eir pro,-! or aeria#!. ike4i!e@ $e 4e#,i&g

a$i&e !-pp#ier !$a## !-pp#: ,eai#e, 4e#,i&g proe,-re for $eir a$i&e!.

Hea f-!io& 6o&,i&g i! a o6i&aio& of epera-re a&, fore re!-#i&g i& 4o ai&g

!-rfae! f#o4i&g oge$er o pro,-e a ?oi&. ;-!io& 6o&,i&g o-r! 4$e& $e ?oi&

oo#! 6e#o4 $e e# epera-re of $e aeria#. $ere i! a epera-re ra&ge 4i$i&

4$i$ a&: pari-#ar aeria# a: 6e !ai!faori#: ?oi&e,. $e !peifie, epera-re

-!e, re


24/32

METHOD STATEMENT

for HPDE

!eparae $e pipe!. Do &o -r& off $e !$aer -&i# $e pipe! are apar. If $e !$aer i!

!oppe, ,-ri&g !$ai&g@ $e !$aer 4i## reae a& e&, -)ark a&, $e !$ai&g

operaio& 4i## $ae o 6e repeae,.

Reoe $e !$aer@ a$ $e pipe! agai&@ a&, $ek $e pipe for proper a#ig&e&.

Soeie!@ ee& 4$e& o&i&-o-! pee#i&g off i! a$iee, o& ea$ !i,e of $e !$aer@

$e pipe! ,o &o a$ proper#:. $i! i! &ora##: ,-e o $e #ap!@ 4$i$ are

pre!!i&g o& o $e pipe 4i$ ,iffere& pre!!-re!. Re)ig$e&i&g $e &-! !#ig$#: o&

ei$er !i,e i! o&e !o#-io&. +-@ if $i! ,oe! &o $e#p@ !$ii&g &ora##: ,oe! $e ?o6.

Ope& -p o&e #ap a&, i&!er a !$i i& 6e4ee& $e ?a4! a&, $e pipe. $i! !$i

4i## o&e&rae $e pre!!-re o& o $e pipe a&, oe $e pipe i&o a#ig&e&. I i!

ipora& o ree6er $a@ if $e #ap $a! 6ee& ope&e, ,-ri&g operaio&@ $e

!$ai&g operaio& -! 6e repeae,.

O&e $e pipe! are orre#: a#ig&e,@ !eparae $e pipe! agai& for #ea&i&g. Reoe

$ip! i&!i,e $e pipe! o& 6o$ !i,e!@ a## $ip! !aere, -&,er $e pipe!@ a&, a#!o

i&!i,e $e a$i&e. O$er4i!e@ $e: 4i## !ik o $e irror $ea p#ae #aer 4$i#e re)

$eai&g. Reoe $e $ip! 6: -!i&g a 6r-!$ or a !a## $ook a,e o- of a $i& !ee#

4ire. Ceer p- a&: ,ir: g#oe! i&!i,e $e pipe or reoe $e $ip! 4i$ :o-r $a&,!.

Do &o o-$ $e !$ae, pipe e&,!. o 6e o& $e !afe !i,e@ a#4a:! #ea& $e !-rfae4i$ a #ea& rag a&, i&era# !piri!/a#o$o# 6efore :o- i&ro,-e $e irror.

=%8 Heatin4 t9e S3rface

Heai&g OOI !-rfae epera-re )250; )E 250; 2180* 10*

Heai&g oo# !-rfae! -! 6e -p o epera-re 6efore f-!io& 6egi&!. Prior o

!ari&g@ a## poi&! o& 6o$ $eai&g oo# !-rfae! 4$ere $e $eai&g oo# !-rfae! 4i##

o&a $e pipe or fii&g e&,! -! 6e 4i$i& $e pre!ri6e, epera-re ra&ge. $e

epera-re ,iffere&e 6e4ee& a&: 4o poi&! o& $e $eai&g oo# f-!io& !-rfae!

-! &o e>ee, 20; 11 Q* for e


25/32

METHOD STATEMENT

for HPDE

$nterfacia' Press3res

Re


26/32

METHOD STATEMENT

for HPDE

!$o-#, 6e $eke, -!i&g $e fo##o4i&g proe,-re

S#o4#: a,?-! -p4ar, $e a$i&e $:,ra-#i o&ro#@ or !#o4#: i&rea!e or


27/32

METHOD STATEMENT

for HPDE

Face.

P#ae $e fai&g oo# 6e4ee& $e opo&e&! e&,!@ a&, fae $e o e!a6#i!$

!oo$@ #ea&@ para##e# ai&g !-rfae!. *op#ee fai&g pro,-e! o&i&-o-!

ir-fere&ia# !$ai&g! fro 6o$ e&,!. ;ae -&i# $ere i! a i&ia# ,i!a&e

6e4ee& $e fi>e, a&, oea6#e #ap!. Soe a$i&e! $ae fai&g !op!. If !op!

are pre!e&@ fae ,o4& o $e !op!. Reoe $e fai&g oo# a&, #ear a## !$ai&g!

a&, pipe $ip! fro $e opo&e& e&,!. Do &o o-$ $e opo&e& e&,! 4i$ :o-r

$a&,! afer fai&g.

A'i4n.

+ri&g $e opo&e& e&,! oge$er@ $ek a#ig&e& a&, $ek for !#ippage agai&!

f-!io& pre!!-re. ook for op#ee o&a a## aro-&, 6o$ e&,! 4i$ &o ,eea6#e

gap!@ a&, o-!i,e ,iaeer! i& $ig$)#o4 a#ig&e& e>ep for $e i!a#ig&e&

perie, i& !eio& =.1. If &ee!!ar:@ a,?-! $e $ig$ !i,e 6: ig$e&i&g $e $ig$ !i,e

#ap. Do &o #oo!e& $e #o4 !i,e #ap 6ea-!e opo&e&! a: !#ip ,-ri&g f-!io&.

Re)fae if $ig$ #o4 a#ig&e& i! a,?-!e,.

Me't%

erif: $a $e $eai&g oo# i! ai&ai&i&g $e orre epera-re. P#ae $e $eai&goo# 6e4ee& $e opo&e& e&,!@ a&, oe $e e&,! agai&! $e $eai&g oo#. $e

i&iia# o&a !$o-#, 6e -&,er o,erae pre!!-re k&o4& a! o&a pre!!-re o

e&!-re f-## o&a. Ho#, o&a pre!!-re 6rief#: $e& #o4er o ,rag pre!!-re 4i$o-

6reaki&g o&a. *o&a pre!!-re -! 6e re#iee, a $e fir! i&,iaio& of e#

op#ee#: aro-&, $e pipe e&,!. Proe,-re! for re#ea!i&g $e pre!!-re i& $e

$:,ra-#i :#i&,er $a reae! i&erfaia# pre!!-re ar: 6: a&-fa-rer. Reie4 $e

eiae Me# +ea, SieMea!-re fro $e $eaer p#ae

Pipe Sie



28/32

METHOD STATEMENT

for HPDE

1/32L F 1/1=L 1 F 2 1)1/ a&, !a##er 0 a&, !a##er(6o- 1/1= 2 (6oe 1)1/ $ro- $ 3 a6oe 0 $ro- $ 90

1/8 F 3/1=L 3 F 5 (6oe 3 $ro- $ + a6oe 90 $ro- $ 225

3/1=L F [L 5 F = (6oe g $ro- $ 12 a6oe 225 $ro- $ 315

[L F 7/1=L = F 11 (6oe 12 $ro-g$ 2 a6oe 315 $ro-g$ =30

(6o- 7/1=L (6oe 2 $ro- $ 3= a6oe =30 $ro- $ 915

(6o- 9/1=L (6oe 2= $ro- $ 5 a6oe g 15 $ro- $ 1300

(6o- 9/1=L (6oe 5

2oin%

Ie,iae#: afer $eai&g oo# reoa#. '"I*B i&!pe $e e#e, e&,!@ 4$i$

!$o-#, 6e f#a@ !oo$@ a&, op#ee#: e#e,. If $e e# !-rfae! are aepa6#e.

Ie,iae#: a&, i& a o&i&-o-! oio&@ 6ri&g $e e&,! oge$er a&, app#: $e

orre ?oi&i&g pre!!-re. Do &o !#a. W$ere $e e


29/32

METHOD STATEMENT

for HPDE

I i! &o &ee!!ar: for $e i&er&a# 6ea, o ro## oer o $e i&!i,e !-rfae of $e pipe.

W$e& 6- f-!i&g pipe of ,i!!ii#ar po#:e$:#e&e aeria#!@ e# 6ea, !ie a: ar:

,-e o ,iffere&e! i& e# i&,e>. $i! i! aepa6#e proi,e, $e e# 6ea, !ie i!

!-ffiie&.

$e f-!io& ?oi& -! 6e kep -&,er f-!io& pre!!-re -&i# ?oi& $a! !-ffiie: oo#e,.

Mai&ai& f-!io& pre!!-re agai&! $e pipi&g opo&e& e&,! for a i&i- of 11

i&-e! per i&$ 25. of pipe 4a##. (oi, $ig$ !re!! !-$ a! p-##i&g@ i&!a##aio&

or ro-g$ $a&,#i&g for a& a,,iio&a# 30 i&-e! or ore afer reoa# fro $e f-!io&

a$i&e

> $NSPECT$ON

>%1 0e'din4 C9ec@s

$e ,o-6#e 6ea, !$o-#, 6e ro##e, oer o&o $e a,?ae& !-rfae!@ a&, 6e -&ifor#:

ro-&,e, a&, o&!i!e& i& !ie a## aro-&, $e ?oi&. (! i##-!rae, i& $e ;ig-re 6e#o4@

a## 6ea,! 4i## &o &ee!!ari#: $ae e. $i! i! aepa6#e proi,e, $e e# 6ea, !ie i!

!-ffiie&.

$e irror)4e#,i&g a$i&e@ if o-p#e, o a ,aa #og@ 4i## gie a pri&o- o&firi&g

$e paraeer! -!e, ,-ri&g 4e#,i&g of a !peifi !ea a&, approa#/re?eio& of $e

4e#,e, !ea.

>%& Defects ! Ca3ses

BTT FS$ON TROBLESHOOT

DEFECTS CASES

E>e!!ie ,o-6#e 6ea, 4i,$ Oer$eai&gE>e!!ie ?oi&i&g fore

Do-6#e 6ea, )grooe oo ,eep E>e!!ie ?oi&i&g foreI&!-ffiie& $eai&gPre!!-re ,-ri&g $eai&g

;#a op o& 6ea, E>e!!ie ?oi&i&g foreOer$eai&g

Co&)-&ifor 6ea, !ie aro-&, pipe Mi!a#ig&e&

Defeie $eai&g oo#Wor& e


30/32

METHOD STATEMENT

for HPDE

O&e 6ea, #arger $a& $e o$er Mi!a#ig&e&*opo&e& !#ippe, i& #apWor& eia# ,ireio&Defeie $eai&g oo#I&op#ee fai&g(#!o po!!i6#e 4$e& f-!i&g 6io,a#pipe! o -&i)o,a# pipe!

+ea,! oo !a## I&!-ffiie& $eai&gI&!-ffiie& ?oi&i&g fore

+ea, &o ro##e, oer o !-rfae S$a##o4 )grooe F I&!-ffiie&$eai&g i&!-ffiie& ?oi&i&g foreDeep )grooe F I&!-ffiie& $eai&g e>e!!ie ?oi&i&g fore+ea, o& 6io,a# pipe a: $ae!#ig$ gap o $e pipe !-rfae

+ea,! oo #arge E>e!!ie $eai&g ie

S%+ R3'es for B3tt 0e'd F3sion

NE#ER

A (ep o 4e#, oge$er pipe! of ,iffere& SDR 4a## $ik&e!!.

A o-$ rie, pipe e&,!.

A eae rii&g !4arf i&!i,e pipe or o& 4e#,i&g a$i&e.

A (##o4 e


31/32

METHOD STATEMENT

for HPDE

1? PRESSRE TEST$N"

1?%1 Press3re Testin4 O3tside t9e Trenc95

If !peifie, 6: $e e&gi&eer@ pre!!-re e!i&g a: 6e o&,-e, prior o pipe

i&!a##aio&.

(fer $e pipe $a! 6ee& ?oi&e,@ fi## i 4i$ 4aer@ aref-##: 6#ee, off a&: rappe, air.

S-6?e $e pipe o a $:,ro!ai e! pre!!-re $a i! 1.5 ie! $e !:!e ,e!ig&

pre!!-re for a a>i- of 3 $o-r!. D-ri&g $i! ie@ a,, 4aer perio,ia##: o

ai&ai& $e e! pre!!-re $i! ope&!ae! for $e i&iia# !re$i&g of $e pipe. $e

#i&e pre!!-re ig$&e!! i! ,eeri&e, 6: i!-a# o6!eraio& $erefore@ i i! &o&ee!!ar: o ea!-re $e ake)-p 4aer. E>ai&e eer: f-!e, ?oi& a&: #eakage

-! 6e repaire, a&, $e& ree!e,.

COE I !$a## 6e $e re!po&!i6i#i: of $e o&raor o e&!-re $a appropriae !afe:

prea-io&! are o6!ere, ,-ri&g $:,ro!ai e!i&g a6oe gro-&,.

1?%& Press3re Testin4 $nside t9e Trenc95

;i## $e pipe#i&e 4i$ 4aer afer i $a! 6ee& #ai, 6#ee, off a&: rappe, air. S-6?e $e

#o4e! e#ee& i& $e !:!e o a e! pre!!-re $a i! 1.5 ie! $e ,e!ig& pre!!-re@

a&, $ek for a&: #eakage. W$e&@ i& $e opi&io& of $e e&gi&eer@ #oa# o&,iio&!

repa&!io& a&, $e e! p$a!e.

W$e& e! pre!!-re i! app#ie, o a 4aer fi##e, pipe@ $e pipe e>pa&,!. D-ri&g $e

i&iia# e>pa&!io& of $e pipe -&,er e!@ !-ffiie& ake)-p 4aer -! 6e a,,e, o $e

!:!e a $o-r#: i&era#! for 3 $o-r! o ai&ai& $e e! pre!!-re. (fer a6o-

$o-r!@ i&iia# e>pa&!io& !$o-#, 6e op#ee a&, $e a-a# e! a& !ar.

W$e& $e e! i! o 6egi&@ $e pipe i! f-## of 4aer a&, i! !-6?ee, o a o&!a& e!

pre!!-re of 1.5 ie! $e !:!e ,e!ig& pre!!-re. $e e! p$a!e !$o-#, &o e>ee,

3 $o-r!@ afer 4$i$ ie a&: 4aer ,efiie&: -! 6e rep#ae, a&, ea!-re,. (,,

a&, ea!-re $e ao-& of ake)-p 4aer rei- a##o4a&e i& $e a6#e 6e#o4.

(& a#er&ae #eakage e! o&!i!! of ai&ai&i&g $e e! pre!!-re ,e!ri6e, a6oe

oer a perio, of $o-r! a&, $e& ,roppi&g $e pre!!-re 6: 10 p!i 0.=9 MPa. If $e

pre!!-re $e& reai&! 4i$i& 5 of $e arge a#-e for 1 $o-r@ $i! i&,iae! $ere i!

&o #eakage i& $e !:!e.



32/32

METHOD STATEMENT

for HPDE

COES

"&,er &o ir-!a&e! !$a## $e oa# ie -&,er e! e>ee, 8 $o-r! a 1.5 ie!

$e !:!e pre!!-re rai&g. If $e e! i! &o op#ee 4i$i& $i! ie #ii ,-e o

#eakage@ eL for 8

$o-r! prior o $e &e> e! !e

Documents

HDPE Procedure