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Method of Statement For Duct Installation, Insulation& Leak Testing Testing TABLE OF CONTENTS
1.1 "$is %et$o- state%ent eplains t$e proce-ure of -uct /orks0 inclu-in t$e -uct i nstallation0 insulation0 fiin of -ucts accessories an- -uct l eakae testin (!i$t "e "est*. st*.
2.
Reference
2.1 Approved Drawings 2.1 Approved 2.2 Manufacturer’s Catalogues, Vendor Drawing 2.3 General Specifications for HVAC Sste! 2.4 Material Su"!ission for HVAC #$uip!ent % Materials
3.
Responsibilities
3.1 Mec!nic!l " #$A #$AC C En%ineer •
He s&all "e overall responsi"le for t&e co!plete activit including, "ut not li!ited to' (.1.1 Assigning wor)!an crew (.1.2 Se$uence of activities to "e carried out for t&e wor) as per t&is Met&od State!ent. (.1.( Stage inspection * surveillance (.1.+ otification to client engineer for inspection and dail co!!issioning activities. (.1.- rovide da to da guidance and delegate wor)s as necessar. (.1./ #nsure t&at t&e e$uip!ent and tools re$uired for carring out t&e test are availa"le, !aintained and used in safe !anner. (.1.0 roduce all necessar records for t&e confir!ation of testing wor)s co!pleted And pass to C inspector as re$uired.
3.2 Mec!nic!l"#$AC S&per'isor •
He s&all "e overall responsi"le for t&e activit including, "ut not li!ited to'
(.2.1 Assigning wor)s!an crew. (.2.2 Se$uence of activities to "e carried out for t&e wor). (.2.( #nsure t&e $ualit levels are !aintained. (.2.+ #nsure t&at t&e e$uip!ent and tools re$uired for carring out t&e test are availa"le, !aintained and used in safe !anner. 3.3 (A"(C )nspector (.(.1 Maintain records of $ualit control c)ec) s&eets % report for!ats for t&e site ests and inspection. (.(.2 Carr out surveillance so as to ensure t&at t&e personel are wor)ing i accor3 Dance wit& t&e approved standards. (.(.( Assurances of approved !et&ods are "eing used for testing and !aterial receipt inspection. (.(.+ Verification of !aterial approval and vendor certification. Control Me!s&res
4.
*.1 (&!lit+ Control +.1.1 +.1.2
#nsure availa"ilit of latest released for construction drawings and specifications. #nsure t&e tools%e$uip!ent used for testing * co!!issioning purpose is cali"rated and certificates availa"le.
*.2 S!fet+ +.2.1 All e$uip!ent and accessories &ave "een certified for t&eir capacit And integrit. +.2.2 Safet and ris) assess!ent s&all "e perfor!ed for ever 4o" or tas), w&ic& &as potential for &ar!. +.2.( All personnel are issued wit& ersonal rotective #$uip!ent wit& 56C. ,.
Se-&ence of Acti'ities
5.1 andling and Storage of Ducts 5.1.1 nloa- t$e -uct b) $an-loa-er an- store t$e -uct insi-e t$e Respective buil-ins or /orks$op area.
5.! "rimar# Ste$ 5.2.1 C$eck approval of /orkin -ra/ins. 5.2.2 C$eck site clearance for /ork. 5.2.3 C$eck /allslab openin as per approve- -ra/ins.
5.2.4 otif) to client for inspection of receivin factor) %a-e -uct. 5.2.5 Asse%ble- t$e fabricate- -ucts at site /it$ consultantqualit) fficial for correctness of construction.
5.% Installation & Insulation of Duct
5.3.1 or +nternal Conceale- uct0 Mark t$e routin of t$e -ucts an- install 7+ t$rea-e- ro- an- supports. 5.3.2 +nstall t$e factor) %a-e uct as per +C -ra/in. 5.3.3 Seal t$e -uct 8oints /it$ approve- sealant. 5.3.4 Appl) sealant outsi-e of t$e -uct bet/een t$e ap an- corner an- also Appl) insi-e of t$e -uct (/$erever it9s possible*. 5.3.5 Stick self:a-$esive alu%inu% allo) sticker pins (1 pin;.16 sq. %.* to "$e bare -uct fir%l). 5.3.6 ,aste t$e bon-in a-$esive lue on t$e bare -uct. 5.3.# All 8oints to be insulate after co%pletion of -uct leak test (li$tnin test* 5.3.< Approve- fiber lass insulation s$all be fie- fir%l) on t$e -uct. 5.3.= +nsulation s$all be overlappe- b) at least 1;;%% an- s$all be astene- /it$ 65%% /i-e alu%inu% foil tape an- tape s$all be verlappe- b) 15%%. 5.3.1; ti$t insulation /it$ alu%inu% ban-. 5.3.11 uct s$all be clean an- all open en-s s$all be covere- in a suitable Manner to prevent fro% -ust an- -ebris. 5.3.12 for internal epose- -uct0 sa%e proce-ure s$all be follo/e-0 anApprove- seal coatin /it$ lass clot$ coverin s$all be applie- after +nsulation. 5.3.13 for eternal epose- -uct0 sa%e proce-ure s$all be follo/e-0 anApprove- alu%inu% cla--in (8acketin* s$all be applie- after +nsulation.
5.4.1 C$eck t$e -i%ension an- location of t$e /allslabceilin openin as ,er t$e ven-or -ra/ins /$erever necessar). 5.4.2 +nstall access -oors as per t$e approve- -ra/in. (>esi-e eac$ M? An- *. "$e ?C0 fire -a%pers0 access -oors0 -oor rilles0 test $oles An- fres$ air intakes s$all be installe- onl) after t$e inspection of Material as per SA@S. 5.4.3 +nstall t$e rilles -iffusers properl) as per +C -ra/ins. 5.4.4 +nstall fleible -uct /it$ necessar) support as per t$e +C -ra/ins. 5.4.5 Connect t$e bot$ en-s of t$e fleible -uct /it$ stainless steel cla%p. i. "$e louver0 rilles an- -iffusers as per -ra/in.
).
Ins$ection ).1 Duct Leak Test
6.1.1 !i$t test s$all be perfor%e- to -eter%ine t$at all 8oints are l eak proof An- it /ill be perfor%e- b) passin a la%p $avin a po/er ratin of not !ess t$an 5;; /atts. (Selection of 5;;/ in nor%al B?AC installation ,ractice*. 6.1.2 !i$t ,o/er ratin not less t$an 5;; /atts0 selection of 5;; /atts !i$tnin s$all be cover onl) 1; sq. %. -uctin area. A--itional
!li$ts /ill be provi-e- if t$e -uct area is %ore t$an 1; sq. %. 6.1.3 "$e insulation of -ucts can be carrie- out before li$t test0 >ut t$e 8oints s$oul- be free in or-er to be teste- before insulation. 6.1.4 "$e test can be perfor%e- part b) part accor-in to t$e site con-ition. 6.1.5 +nsert t$e li$t insi-e t$e -uct inspecte-0 %ove t$e li$t as near as ,ossible in eac$ transverse 8oint0 for t$e case of s%aller -uct0 floo- b) !i$t eac$ strai$t -uct of 6 %eters %ini%u% lent$0 t$en visual +nspection s$all be perfor%e- fro% outsi-e t$e peri%eter 8oint to eter%ine t$e leak. 6.1.6 n /itness inspection0 furt$er activit) s$all be procee-e- to con-uct utri$t corrective action to seal t$e i-entifie- leaks. 6.1.# "$e inspection s$all be recor-e- an- sine- b) t$e client inspector for Recor- reference.
).! Final Ins$ection.
6.2.1 @nsure- t$at all ventilation -uct /ork s$all be carrie- out in Accor-ance /it$ 8ob specification an- stan-ar-s. 6.2.2 Re- line %ark:ups an- as built -ra/in to be prepare+ncorporatin t$e %o-ifications if an) for t$e installe- -uctin !a)out. 6.2.3 inal inspection to be %a-e for installation of all ventilation -ucts Work.
