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MECHANICAL PIPING INSULATION
CCH NHIT CHO NG NG C KH
1 GENERAL 1 TNG QUT
1.1 FUNCTIONAL DESCRIPTION 1.1 M T The mechanical insulation
scope of work covers the insulation of all chilled water pipework,
condensate pipework and all hot exhaust flues.
Phm vi cng vic cng tc cch nhit cho ng ng c kh bao gm cch nhit
cho tt c ng ng nc lnh, ng nc ngng t, v ng khi thi nng.
1.2 CROSS REFERENCES 1.2 THAM CHIU CHO
General Comply with the General requirements worksection.
Tng qut Ph hp vi chng Nhng yu cu chung.
Related worksections Refer to the following worksections:
Mechanical General Requirements, Cold and Hot Water System,
Mechanical Piping, Chillers
Nhng chng lin quan Tham chiu n cc chng sau: Nhng yu cu chung v c
kh, H thng cp nc nng v lnh, H thng ng ng c kh,H thng my lm lnh nc
Chillers,
1.3 STANDARDS 1.3 TIU CHUN
Installation of mineral wool insulation Comply with the
AMWU/CFMEU/CEPU/FARIMA Industry Code of Practice for the Safe Use
of Glass Wool and Rock Wool Insulation. Marking: Deliver mineral
wool products to site in packaging labelled FBS-1 BIO-SOLUBLE
INSULATION.
Lp t cch nhit bng len khong Tun th Lut thi cng cng nghip ca
AMWU/CFMEU/CEPU/FARIMA v an ton s dng bng len thy tinh v bng len
trong cch nhit. Ghi nhn: Giao cc sn phm bng len khong n cng trng cn
nguyn bao gi theo FBS-1 VT LIU CCH NHIT HO TAN.
1.4 INTERPRETATIONS 1.4 KHI NIM
Definitions Mineral wool (including glasswool and rockwool):
Entangled mat of fibrous non-crystalline material derived from
inorganic oxides or minerals, rock, slag or glass, processed at
high temperatures from a molten state. Polyester: Insulation
manufactured from thermally bonded polyester fibres.
nh ngha Si khong (bao gm bng thy tinh v bng ): Tm si vt liu khng
kt tinh c ngun gc t cc oxyt v c hoc cc cht khong, , x thp hoc thy
tinh, x l nhit cao t trng thi nng chy. Polyester: l vt liu cch nhit
lm t si polyester kt dnh nhit.
1.5 DESIGN 1.5 THIT K
Performance Requirements For cold piping, design, supply and
install an insulation system that shows no signs of condensation
under any likely to be experienced conditions about the pipework,
and associated fittings. This is accepted as equal to the design
wet bulb plus 1 deg C. For hot water piping, design, supply and
Yu cu v hiu sut i vi ng ng lnh, thit k, cung cp v lp t h thng
cch nhit, sao cho khng c c s ngng t trong bt k iu kin bit trc no v
ng ng v cc ph kin. iu ny c chp thun tng ng vi nhit bu t thit k cng
vi 10C. i vi ng ng nng, thit k, cung
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install an insulation system that minimises heat loss, such that
the external surface of the pipework does not exceed likely to be
experienced conditions by more than 5 deg C. This is accepted as
equal to the minimum design dry bulb less 1 deg C.
cp v lp t h thng cch nhit gim thiu tn tht nhit, sao cho b mt
ngoi ca ng gi khng vt hn 50C so vi nhng iu kin bit. iu ny c chp
thun tng ng vi nhit bu t thit k cng vi 10C.
2 QUALITY 2 CHT LNG
2.1 PRE-COMPLETION TESTS 2.1 TH NGHIM TRC KHI HON TT
Tensile strength of paper To ASTM D828 or AS/NZS 1301.404s.
bn ko ca giy Theo ASTM D828 hoc AS/NZS 1301.404s.
Water vapour transmission characteristics of paper To AS
1301.419s Condition B, or ASTM E96 Procedure E.
c tnh dn hi nc ca giy Theo AS 1301.419s iu kin B, hoc ASTM E96
Th tc E.
Early fire hazard indices Spread of flame index: To AS/NZS
1530.3. Smoke developed index: To AS/NZS 1530.3. Flammability
index: To AS 1530.2.
Ch s bt chy Ch s chy lan: theo AS/NZS 1530.3 Ch s sinh khi: theo
AS/NZS 1530.3 Ch s bc chy: theo AS 1530.2
Aluminium foil laminate tape Physical properties: To SMACNA
Fibrous Glass Duct Construction Standards.
Bng keo nhm c tnh vt l: theo SMACNA Tiu chun ch to ng gi si thy
tinh.
2.2 SAMPLES 2.2 MU VT T
General Submit samples of the following: - Each type of
insulation, including at
least one transverse joint and one hanger on a piece of
pipe.
Tng qut Trnh duyt mu sau: - Mi loi cch nhit, bao gm t nht
mt mi ni nm ngang v mt chi tit treo ng trn mt on ng mu.
2.3 ALTERNATIVE INSULATION METHODS AND MATERIALS
2.3 LA CHN PHNG N CCH NHIT V VT LIU
General Do not submit alternatives for materials or methods that
have lesser quality or characteristics in terms of the following: -
Performance. - R value. - Durability during and after
installation. - Corrosion resistance. - Cold bridging.
Tng qut Khng trnh duyt cc phng n vt t hoc bin php c cht lng hoc
c tnh thp hn cc yu t sau: - Hiu sut - Gi tr R - bn trong khi v sau
khi lp t. - chng n mn - Cu nhit lnh.
2.4 SUBMISSIONS 2.4 TRNH DUYT
Calculations Submit supplier calculations demonstrating that
selected insulation methods, materials & thicknesses meet
performance requirements.
Bng tnh Trnh duyt bng tnh ca nh cung cp chng minh rng phng php
cch nhit, vt liu v chiu dy chn la p ng cc yu cu v hiu sut.
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Materials Submit product data for the following. - Piping
insulation - Piping vapour barrier - Piping cladding
Vt liu Trnh duyt ti liu cc vt t sau: - Vt liu cch nhit ng ng -
Lp ngn m - Lp ph bao che
3 MATERIALS 3 VT LIU
3.1 GENERAL 3.1 TNG QUT
General Provide piping insulation in conformance with the
Minimum piping insulation thickness table.
Tng quan Cung cp cch nhit cho ng ng ph hp vi bng dy cch nhit ng
ng ti thiu.
Minimum piping insulation thickness table Bng dy cch nhit ng ng
ti thiu
Nominal pipe size/ ng knh danh nghaDN 15-40 50-80 100-125 150
200
Minimum insulation thickness (mm)
Temperature of piping contents Nhit ca cht lng trong ng
Maximum thermal conductivity at mean temperature (W/m.K) dn nhit
ti a nhit trung bnh Chiu dy lp cch nhit ti thiu (mm)
-20, < 2C 0.037 at 20 C 50 63 75 75 100 2, < 20C 0.037 at
20 C 50 50 50 63 63 40, < 90C 0.037 at 50 C 25 25 25 38 38 90,
< 120C 0.038 at 65 C 38 38 50 50 50 120, < 175C 0.042 at 90 C
63 63 63 75 88 175C 0.047 at 120 C 63 75 75 100 125
3.2 MATERIALS 3.2 VT LIU
Fire hazard properties Fire hazard indices for all materials
when tested in conformance with AS/NZS 1530.3: Spread of flame
index: 0. Smoke developed index: 3. Facing materials: Flammability
index: < 5.
c tnh nguy chy Ch s nguy chy ca tt c cc loi vt liu khi th nghim
ph hp vi tiu chun AS/NZS 1530.3: Ch s chy lan: 0 Ch s sinh khi: 3
Vt liu b mt: Ch s bc chy: < 5
Polystyrene foam Description: To AS 1366.3 Class S or SL
self-extinguishing grade, machine cut to form tubular half-sections
for pipe insulation or batts for insulating fittings. For tanks and
vessels, mould to shape. Density (minimum): - Moulded grades:
. Class S: 16 kg/m3.
. Class SL: 13.5 kg/m3. - Extruded grade: 32 kg/m3.
Bt xp M t: theo AS 1366.3 Class S hoc SL loi t dp tt, ct bng my
thnh dng bn nguyt cch nhit ng hoc cch nhit ph kin. Bnh v h cha, dng
c sn. T trng (nh nht) Loi c:
. Class S: 16 kg/m3.
. Class SL: 13.5 kg/m3. - Loi cn: 32 kg/m3.
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Polyolefin foam Type: Closed cell cross-linked polyolefin foam
produced using non-CFC blowing agent. Insulation surface facing:
Heat-bonded aluminium foil laminate.
Bt xp polyolefin Loi: bt xp polyolefin lien kt ht sn xut bng vt
liu thi non-CFC. B mt cch nhit: l nhm mng lien kt nhit
Mineral wool and polyester Description: Select from the
following: - Mineral wool resin-bonded to form
tubular sections. - Polyester in moulded tubular sections. Early
fire hazard indices: - Spread of flame index: 0. - Smoke developed
index: 3
(maximum). Cold piping: Do not provide mineral wool for cold
piping, except for the following: - To provide a fire rated
building
penetration. - For filling air gaps around valves and
fittings.
Bng len khong v polyester M t: Chn mt trong hai: - Bng len khong
dn bng nha do
to thnh on ng. - Polyester dng khun ng. Ch s bt chy: - Ch s chy
lan: 0 - Ch s sinh khi: 3 (ti a) ng ng lnh: Khng s dng bng len
khong cho ng ng lnh, ngoi tr cho: - to ra l xuyn kt cu xy dng
chu la. - lp y khe h xung quanh van v
ph kin.
Nitrile Rubber Type: Chemically blown closed cell nitrile rubber
in tubular sections for pipe insulation, in sheets for insulating
pipe fittings, and in sheets or rolls for ducts, large pipes, tanks
and vessels. Provide with a smooth natural finish and vapour
barrier properties. Type test required from independent lab.
Standard: To ASTM C 534. Physical properties: - Maximum thermal
conductivity:
0.04 W/mK at 0oC. - Moisture absorption: Non-
hygroscopic. - Water vapour permeability:
0.065 ng/Pa.s.m (maximum). - Early fire hazard indices:
. Spread of flame index: 0.
. Smoke developed index: 3 (maximum).
Coating: Provide 2 coats of tintable, water-based, rubberised,
UV resistant, flexible paint finish to outdoor installations. Wrap:
Wrap with an approved white PVC wrap. External: sheath.
Cao su nitrile Chng loi: cao su nitrile thi ho cht t ong kn dng
tm cho cch nhit ph kin ng ng hay dng ng cch nhit cho ng, v dng tm
hoc cun cho ng gi, ng c ng knh ln, bn v bnh cha. C b mt hon thin t
nhin phng v c tnh cht ngn m. Th nghim mu phi c t phng th nghim c
lp. Tiu chun: theo ASTM C534 c tnh vt l: - dn nhit ti a: 0.04 W/mK
at
0oC. - hp th ng sng: khng hp
th. - hp th hi nc: 0.065 ng/Pa.m.s.
- Ch s bt chy: . Ch s chy lan: 0 . Ch s sinh khi: 3 (ti a)
Sn ph: ph 2 lp sn do chu tia cc tm, nn cao su v nc, c thuc mu
cho cc chi tit lp t ngoi tri. Bc xung quanh: qun xung quanh bng lp
PVC trng c ph duyt. Bn ngoi: Bao che.
Phenolic Foam Type: Insulation shall comprise of 35 kg/m minimum
density CFC free rigid phenolic foam sections, one metre in length
with factory applied fully bonded reinforced aluminium foil facing.
Finishing: The bore face of sections shall
Bt xp phenolic Chng loi: dng ng cng c t trng 35kg/m3 khng cha
CFC, di 1m c lp mng giy nhm tng cng dn c nh hon ton ti nh my. Hon
thin: B mt khoan l ca on ng phi c kh bi v qut mt lp
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be de-dusted and coated with a non odorous passivating solution
after manufacture. Manufacturer: The insulation shall be Kooltherm
phenolic foam, as manufactured by Kingspan Industrial Insulation
Limited. Physical properties: - Maximum thermal conductivity:
0.018W/mK at 10C mean. - Moisture absorption: Non-
hygroscopic. - Water vapour permeability:
0.065 ng/Pa.s.m (maximum). - Early fire hazard indices:
. Spread of flame index: 0.
. Smoke developed index: 3 (maximum).
External: Insulation shall have a weatherproof coating of
minimum 0.8mm thickness Polyisobutylene sheeting bonded to the
insulation with minimum 30mm wide circumferential and longitudinal
lap joints which shall be fully solvent welded in accordance with
the manufacturers instructions. Internal & exposed: Sheathed.
Bends and fittings: shall be formed from mitred and trimmed
sections, cut to ensure that a good contact with the surface to be
insulated is made.
dung dch chng oxy ho khng mi sau khi sn xut. Nh sn xut: bt xp
phenolic Kooltherm, c sn xut bi Kingspan Industrial Insulation
Limited c tnh vt l: - dn nhit ti a: 0.018W/mK
trung bnh 10C . - hp th ng sng: khng hp
th. - hp th hi nc: 0.065 ng/Pa.m.s.
- Ch s bt chy: . Ch s chy lan: 0 . Ch s sinh khi: 3 (ti a)
Bn ngoi tri: Lp cch nhit phi c bao ph chng thi tit bng tm
Polyisobutylene dy ti thiu 0,8mm dn vo lp cch nhit vi mi ni m theo
chiu di v chiu chu vi ti thiu rng 30mm, dn keo dnh hon ton theo hng
dn ca nh sn xut. Bn trong v l ra: bc bao che. ng co v ph kin: lm t
cc on ng ct ta vung gc sao cho m bo c mt s tip xc tt vi b mt cch
nhit. Chiu dy da theo tiu chun BS 5422: 1990
Adhesives, sealants and mastics Early fire hazard indices: -
Spread of flame index: 0. - Smoke developed index: 3. Mastic vapour
barrier: - Water vapour permeance:
. Chilled water pipes: 15 ng/N.s.
. Cold water pipes: 50 ng/N.s.
Keo dn, Cht trt kn v mastic Ch s bt chy: - Ch s chy lan: 0. - Ch
s sinh khi: 3 Lp ngn m mastic - ht hi nc: ng nc lm lnh: 15 ng/N.s
ng nc lnh: 50 ng/N.s
Aluminium foil laminate sheet Physical characteristics: -
Tensile strength (minimum):
. Machine direction: 14.5 kN/m.
. Lateral direction: 9.8 kN/m. - Water vapour permeance:
. Creased: 2.26 ng/N.s.
. Uncreased: 1.13 ng/N.s. Early fire hazard indices: - Spread of
flame index: 0. - Smoke developed index: 0. - Flammability index:
5. Operating temperature rating: > 10C above temperature of
fluid in pipe.
Lp giy nhm c tnh vt l: - Sc bn ko (ti thiu):
. Theo chiu my: 14.5 kN/m.
. Theo chiu lch: 9.8 kN/m - hp thu hi nc:
. C np: 2.26 ng/N.s.
. Khng np: 1.13 ng/N.s. - Ch s bt chy:
. Ch s chy lan: 0
. Ch s sinh khi: 0
. Ch s chy: 5 Nhit lm vic ti thiu: ln hn nhit cht lng trong ng
10C
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Aluminium foil laminate tape Adhesive: Non-toxic, high tack
synthetic pressure sensitive type. Liner: Silicone coated paper.
Backing: Aluminium foil laminate. Minimum width: 50 mm. Physical
properties: - Tensile strength: 4.8 kN/m (average
minimum). - Shear adhesion: To SMACNA Fibrous
Glass Construction standards Table 3.2.
- Peel adhesion at 180: 0.68 kN/m (average minimum).
Water vapour permeance: - Creased: 2.26 ng/N.s. - Uncreased:
1.13 ng/N.s.
Bng keo nhm Keo dn: khng c, loi nhy p ng khu ch tng hp cao. Lp
lt: giy ph silicone. Tm nn: mng nhm mng. Chiu rng ti thiu; 75mm c
tnh vt l: - Sc bn ko: 4.8 kN/m (trung bnh
ti thiu) - Sc dnh ko: theo bng 3.2 ca
SMACNA tiu chun ch to ng gi si thy tinh.
- Sc dnh bc 180: 0.68 kN/m (trung bnh ti thiu).
hp thu hi nc: - C np: 2.26 ng/N.s. - Khng np: 1.13 ng/N.s.
Reinforced cloth tape Adhesive: Grey calendered rubber or
acrylic resin. Backing: Cotton/polyester blend or polyester
film.
Bng vi tng cng Keo dn: cao su cn my mu xm hoc nha acrylic. Tm
nn: phi t l cotton/polyester hoc mng polyester.
4 EXECUTION 4 THI CNG
4.1 GENERAL 4.1 TNG QUT
General General: Do not apply insulation to piping joints until
piping pressure testing is complete. Before installing insulation,
ensure that surfaces are clean and dry. Supports: Do not apply
insulation at supports until the spacers, vapour barrier (if any)
and metal sheathing (if any) has been installed.
Tng qut Tng qut: Khng thc hin bc cch nhit cho cc mi ni cho n khi
th nghim p sut ng ng c hon tt. Trc khi lp t cch nhit, m bo rng cc b
mt kh v sch. Gi : Khng bc cch nhit ti cc gi cho n khi cc chi tit m,
lp ngn m v lp bao che kim loi c lp t.
Cold piping General: Insulate piping carrying fluids at
temperatures below ambient including chilled water piping, cold
refrigerant and condensate piping, and associated valves and
fittings.
ng ng lnh Tng qut: Bc cch nhit cho ng ng cht lng c nhit thp hn
nhit mi trng bao gm ng ng nc lm lnh, ng mi cht lnh v ng nc ngng, v
cc van v ph kin lin quan.
Hot piping General: Insulate the following: - Steam, condensate,
heating, warm and
hot water piping. - Piping hazardous to personnel,
including blow down piping. - Piped services where trace heating
is
incorporated. Exceptions: Except where necessary for personnel
protection, do not insulate: - Sludge and drain piping carrying
hot
ng ng nc nng Tng qut: bc cch nhit cho - ng hi, ng nc ngng, ng
gia
nhit, ng nc nng v ng nc m.
- ng ng nguy him cho con ngi, bao gm c ng x xung.
- Cc ng ng c gn chi tit gia nhit.
Ngoi l: Tr khi cn thit cho mc ch an ton cho con ngi, khng bc
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fluids. - Condensate waste piping.
cch nhit: - ng ng thot, ng nc thi
mang cht lng nng. - ng nc nc ngng.
Pump and valve insulation Insulate all pumps, flanges, unions
and valves as for attached pipework. Note: Insulate chilled water
pumps and strainers with removable covers using hand operated
clasps (not screws or other fasteners requiring tools).
Bc cch nhit cho van v bm Bc cch nhit cho tt c bm, mt bch, racco
v van nh ng ng lp vo. Lu : Bc cch nhit cho bm nc lm lnh v lc Y bng
cc tm tho ri c lp cht bng cc kp ng m bng tay (khng bt vt hoc cc chi
tit kp cht khc cn s dng dng c m)
4.2 PIPING INSULATION SYSTEMS
4.2 H THNG CCH NHIT NG NG
Insulation systems Comply with the Insulation systems table for
the selection and application of insulation systems.
H thng cch nhit Chn la v s dng cc h thng cch nhit phi tun th bng
h thng cch nhit.
Insulation systems table Bng h thng cch nhit Insulation
system
Application for piping
Insulation material
Insulation surface facing
Insulation fixing material
Mineral wool Hot or selected sections of cold
Mineral wool Aluminium foil laminate
None required
Polyester fibre Hot Polyester fibre Aluminium foil laminate
None required
Polyolefin foam Hot Polyolefin foam Aluminium foil laminate
None required
Polyolefin foam Cold Polyolefin foam Aluminium foil laminate and
mastic as a vapour barrier
Adhesive
Polystyrene system
Cold Polystyrene foam
Aluminium foil laminate and mastic as a vapour barrier
Adhesive
Phenolic foam Cold Phenolic foam Aluminium foil laminate and
mastic as a vapour barrier
Adhesive
4.3 COLD PIPING INSULATION 4.3 BC CCH NHIT CHO NG NG LNH
Installation General: If practicable, do not slit. If slit, and
for valves, fittings and large diameter pipes, fix with adhesive at
joints. Adhere to the pipe at end joints, for a distance of 25 mm,
to compartmentalise each section. Timing: Do not install before
pressure
Thi cng Tng qut: Nu kh thi, khng rch ng cch nhit. Nu rch, s dng
cho van, ph kin v ng ng knh ln, dn keo cc v tr ni. Dn cht vo ng u
cui mi ni, di 25mm, cch ly ring bit tng on ng. Thi im: khng bc cch
nhit cho
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testing at joints, fittings and valves. Do not adhere butt
joints until after pressure testing.
mi ni, ph kin v van trc khi th nghim p lc. Khng dn cch nhit mi
ni i u cho n sau khi th nghim p lc.
Nitrile Rubber If practicable, do not slit. If slit, and for
valves, fittings and large diameter pipes, fix with adhesive at
joints. Installation: Adhesive fix and seal exterior joints. Adhere
to the pipe at end joints, for a distance of 25 mm, to
compartmentalise each section. Protection: Provide metal sheath
insulation: - where exposed to sunlight; or - where subject to
mechanical damage. Alternative protection: Where exposed to
sunlight but not exposed to mechanical damage provide 2 coats of
tintable, water-based, rubberised, UV resistant, flexible paint
finish to outdoor installations.
Cao su nitrile Nu kh thi, khng rch ng cch nhit. Nu rch, s dng
cho van, ph kin v ng ng knh ln, dn keo cc v tr ni. Thi cng: Dn keo
v lm kn cc mi ni bn ngoi. Dn cht vo ng u cui mi ni, di 25mm, cch ly
ring bit tng on ng. Bo v: thc hin bao che kim loi cho lp cch nhit :
- Ni l ra di nng mt tri. - Ni d b h hng c hc. Cch khc: Ni no l ra
di nh nng nhng khng b h hng c hc, c th thc hin ph 2 lp sn do chu
tia cc tm, nn cao su v nc, c thuc mu cho cc chi tit lp t ngoi
tri.
Polystyrene, polyolefin, and phenolic foam Vapour barrier:
Factory bond aluminium foil laminate to insulation and provide a
minimum overlap of 50 mm at the longitudinal joint. Extent of
application of adhesive or sealant: - To mating faces of
polystyrene on
joints between sections. - To steel pipe to be insulated. - To
faces of polystyrene and pipe
support blocks at joints. Longitudinal joints: Stagger
longitudinal joints a minimum of 75 mm between sections. Straps:
Fix insulation at a maximum of 500 mm centres with 12 mm wide
polypropylene, metallic-coated steel or aluminium straps. Machine
pull metal straps into the insulation to create a smooth surface
for application of the vapour barrier. Bends: Cut insulation into
segments and seal together with adhesive, or provide preformed
bends, following bend contours. Fix to piping. Fittings, valves and
flanges: Cut insulation and form it to fit around fittings, valves
and flanges. Provide loose mineral wool to fill air gaps and voids.
Provide a continuous vapour barrier. Vapour barrier: Proprietary
water-based mastic vapour barrier.
Bt xp Polystyrene, polyolefin, and phenolic Lp ngn m: lp giy nhm
dn ti nh my cch m v dn chng m ti thiu 50mm mi ni theo chiu di. Nhng
trng hp phi s dng keo dn hoc cht lm kn: - Dn hai b mt Polystyrene
gia cc
on ni. - Dn ln ng thp cn cch nhit. - Dn ln Polystyrene v khi
ng
ti mi ni. Mi ni dc chiu di: dn zic zac dc chiu di ti thiu 75mm
gia cc on. Dy ai: Lp cch nhit cch nhau ti a 500mm tnh t tm vi
Polystyrene rng 12mm, bng thp m hoc ai nhm. Dng my ko dy kim loi vo
lp cch nhit to ra mt b mt phng u c tc dng cch m tt. Ch b cong: Ct
vt liu cch nhit thnh nhiu on v dn vi nhau bng keo, hoc s dng co ch
to sn, theo bin dng ch b cong. Lp vo ng ng. Ph kin, van, v mt bch:
Ct vt liu cch nhit v to hnh lp kht vi cc b mt cn cch nhit ph kin,
van, v mt bch. S dng bng len khong lp y cc khe h v l trng. To ra mt
lp ngn m lin tc. Lp ngn m: dng lp ngn m bng va mastic trn nn nc,
loi c nhn hiu ni ting.
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4.4 MASTIC VAPOUR BARRIER 4.4 MASTIC NGN M
Elastomeric finish Apply to all cold pipework insulation, an
elastomeric coating such as Fosters 60/95 according to maufacturers
instructions and recommendations.
Hon thin bng Elastomeric p dng cho cch nhit ng nc lnh, lp
elastomeric nh Fosters 60/95 theo hng dn v khuyn co ca nh sn
xut.
4.5 HOT PIPING INSULATION 4.5 BC CCH NHIT CHO NG NG NNG
Mineral wool and polyester Surface finish: - Mineral wool:
Factory bonded
aluminium foil laminate. - Polyester: Factory bonded
aluminium
foil laminate or integral polyester scrim.
Application: Fit insulation tightly to piping surfaces without
gaps. Close butt ends of insulation sections. Minimise number of
joints. If the insulation is in half-sections, make only
half-circumferential joints at any one place. Seal longitudinal
seams in foil laminate and fix insulation at maximum 500 mm centres
with polypropylene, zinc-coated steel or aluminium straps.
Bng len khong v polyester B mt hon thin: - Bng len khong: c lp
mng nhm
dn ti nh my. - Polyester: mng nhm dn ti nh
my hoc tch hp vi lt polyester. S dng: t cch nhit tip xc tht st
vo b mt ng. Lm kn u cui bng on cch nhit.Gim thiu mi ni. Nu ch cch
nhit mt na mt, ch ni na chu vi mt v tr. Lm kn cc ng ni theo chiu di
ca lp mng v c nh lp cch nhit khong cch tm ti a 500mm bng dy
polypropylene, thp trng km hoc nhm.
4.6 PIPE SUPPORTS 4.6 CHI TIT TREO NG
Insulated pipe General: Provide supports formed to fit around
the insulation. Protection: - Replace the insulation at the
support
point with a shaped insulation spacer block. For chilled water
insulation systems, the insulation block shall be high density
plastic insulation, suitable and designed for the purpose. See more
detail at www.bindereng.com. Wooden blocks are not permitted for
chilled water insulation systems, though may be used for hot water
insulation systems.
Butt the insulation up to the insulation block and seal with
silicone compound. Clad the block and insulation in 0.5 mm
zinc-coated steel sheet extending 100 mm each side of the
support.
ng c cch nhit Tng qut: S dng gi c hnh dng ph hp lp va vi xung
quanh lp cch nhit. Bo v: - Thay th lp cch nhit gi
bng khi m cch nhit to hnh. Dv h thng cch nhit ng nc lm lnh, khi
cch nhit phi l nha do n hi t trng cao hoc cch nhit phenolic, ph hp
v c thit k lm gi . Xem thm trang web: www.bindereng.com. Khng c php
s dng khi g ng nc lm lnh, mc d c th s dng cho h thng cch nhit nc
nng.
t t lp cch nhit vo khi cch nhit v lm kn bng ho cht silicone. Bao
che khi cch nhit li bng tm thp trng km dy 0,5mm di ra 100mm mi bn
ca gi .
4.7 SHEATHING OF PIPING INSULATION
4.7 V BAO CHE CHO LP CCH NHIT NG NG
Location Provide metal sheathing to all piping insulation: - In
plant rooms. - In basements.
V tr Thc hin bao che kim loi cho tt c cc cch nhit ng ng : -
Trong phng my t thit b. - Trong tng hm.
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Centrepoint Page 10 of 12 of B.30 18 September 2007
- Exposed to weather. - Subject to mechanical damage. - On
valves, pipeline components and
pumps in sheathed pipework.
- Ni l ra ngoi tri. - C th b h hng c hc. - Cho van, ph kin trn
ng ng v
bm gn trn ng ng c bao che kim loi.
Metal sheathing Material: Zinc-coated steel, 0.55 mm minimum
thickness. Installation: Cut and roll the metal sheathing to the
correct size. Lap longitudinal and transverse joints a minimum of
40 mm and arrange longitudinal laps to shed water. Cone down at
terminations and transitions. Fixing: Select from the following: -
Clamp sheathing at 500 mm maximum
centres with 12 x 0.55 mm zinc-coated steel straps.
- Fix sheathing with screws or rivets at 150 mm maximum centres.
Do not penetrate the vapour barrier. Protect the vapour barrier
with reinforced cloth tape.
Bends: Provide pre-drilled lobster back bends containing at
least 3 segments. Provide mitred elbows where the size of the
piping or the radius of pipe bends does not allow the use of
segmented bends. Provide each segment with an inner and outer swage
formed at the transverse edges. Fix longitudinal joints with pop
rivets of correct length so that the vapour barrier is not damaged.
Further protect insulation vapour barrier with reinforced cloth
tape where pop rivets are installed. Weatherproofing: Weatherproof
external joints and fixings with silicone sealant. Serviceable
items: Provide removable boxes or cover plates to equipment
requiring maintenance. Provide proprietary toggle action catches
for removable boxes. The following equipment requires maintenance:
- Insulated strainers. - Valves at pumps. - Flow regulating valves.
- Control valves. - Flexible connections. - Demountable joints. -
Flow measuring devices.
Bao che kim loi Vt liu: thp m km, dy ti thiu 0,55mm. Lp t: Ct v
cun tm kim loi theo kch thc yu cu. Chng m theo chiu dc v mi ni
ngang ti thiu 40mm v lp t sao cho mi ni ngang c tc dng kn nc. Lm
thnh hnh nn chp xung u cui v ni chuyn tip. Lp t: chn trong cc cch
sau: - Kp lp kim loi bao che khong
cch tm ti a 500mm bng dy thp trng km 12 x 0,55mm.
- C nh lp kim loi bao che bng vis hoc rivet khong cch tm ti a
150mm. Khng lm lng lp ngn m. Bo v lp ngn m bng bng keo vi tng
cng.
ng cong: S dng cc tm cong khoan l trc cha t nht 3 phn on ghp li.
S dng cc co vung ni kch thc ng hoc bn knh ca ng cong khng cho php s
dng ng cong chia on. Mi phn on c phn rnh rp khun bn trong v bn ngoi
theo cnh ni ngang. C nh cc mi ni doc bng rivet c chiu di thch hp
khng lm h lp ngn m. Bo v thm cho lp ngn m bng bng keo vi tng cng ni
s dng rivet. Chng nc: Chng nuc cho cc mi ni v chi tit kp, c nh ngoi
tri bng cht trt kn silicone. Cc chi tit cn kim tra, bo tr: Thc hin
hp tho ri c v tm np y cho cc thit b i hi bo tr. S dng cht kho kiu
tc ng n khy nguyn b mua sn cho hp ny. Cc thit b sau y i hi bo tr: -
Cc b lc ch Y c bc cch nhit. - Cc van ti my bm. - Van iu chnh lu lng
- Van iu khin - Mi ni tho lp - Thit b o lu lng.
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4.8 TANK AND VESSEL INSULATION
4.8 CCH NHIT CHO BN / BNH CHA
Cold (< 20C) tanks Material: Nitrile rubber..
Bn nc lnh (< 20C) Vt liu: Cao su Nitrile.
Hot ( 20C) tanks Material: Mineral wool or polyester
blanket.
Bn nc nng ( 20C) Vt liu: tm bng len khong hoc polyester.
Removable covers Provide removable insulated covers, attached
with proprietary toggle action catches or self-tapping screws, to
serviceable items.
Np tho lp Lp t np tho lp, c cht kho kiu tc ng n khy nguyn b mua
sn cho hp ny hoc vis t rencho cc thit b i hi bo tr.
4.9 COLD TANK AND VESSEL INSULATION
4.9 CCH NHIT CHO BN / BNH CHA LNH
Elastomeric foam insulation Adhere to total area of tank.
Oversize at butt joints so that insulation is under compression.
Seal joints with adhesive.
Cch nhit bng bt xp n hi Dn ln ton b b mt bn cha. Tng kch thc ln
ch mi ni di u lp cch nhit trng thi b nn. Lm kn mi ni bng keo
dn.
4.10 HOT TANK AND VESSEL INSULATION
4.10 CCH NHIT CHO BN / BNH CHA NNG
Method General: Wrap insulation around the whole of the tank or
vessel with joints tightly butted. Installation: Form ends with cut
segments of insulation to match the contours of the tank or vessel.
Fixing: 12 x 0.55 mm zinc-coated steel straps at 500 mm maximum
centres.
Phng php Tng qut: Qun tm cch nhit xung quanh ton b bn hay bnh
cha vi cc mi ni t st nhau tht kn. Lp t: u cui bn, to hnh cc phn on
bng cch ct ghp lp cch nhit m st vi bin dng ca bn/ bnh cha. C nh: dy
thp trng km 12 x 0,55 mm khong cch tm ti a 500mm.
4.11 SHEATHING OF TANK AND VESSEL INSULATION
4.11 V BAO CHE CHO LP CCH NHIT CA BN V BNH CHA
Metal sheathing Material: 0.55 mm (minimum) zinc-coated steel
sheet. Installation: Cut and roll metal sheathing to the correct
sizes. Lap longitudinal and transverse joints a minimum of 40 mm
and arrange longitudinal laps to shed water, with exposed edges
swaged. Fixing: Clamp sheathing with 12 x 0.55 mm zinc-coated steel
straps at 500 mm maximum centres. Weatherproofing: Weatherproof
external joints and fixings with sealant.
Bao che kim loi Vt liu: thp trng km dy ti thiu 0,55mm Lp t: Ct v
cun tm kim loi theo kch thc yu cu. Chng m theo chiu dc v mi ni
ngang ti thiu 40mm v lp t sao cho mi ni ngang c tc dng kn nc, vi
cnh rp khun l ra. C nh: Kp lp kim loi bao che khong cch tm ti a
500mm bng dy thp trng km 12 x 0,55mm. Chng nc: Chng nuc cho cc mi
ni v chi tit kp, c nh ngoi tri bng cht trt kn silicone.
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4.12 FLUE AND EXHAUST PIPE INSULATION
4.12 CCH NHIT CHO NG HI V NG KHI
General Insulate the full length of flues or exhausts within
buildings.
Tng qut Cch nhit ton b chiu di ca ng hi/ ng khi trong phm vi to
nh.
Insulation Material: Mineral wool, suitable for temperatures up
to 260C. Maximum thermal conductivity: 0.036 W/m.K at 20C. Minimum
thickness: 50 mm.
Cch nhit Vt liu: bng len khong, tng thch nhit n 260C. dn nhit ti
a: 0.036 W/m.K 20C. Chiu dy ti thiu: 50mm
Application Wrap insulation around flues or exhausts. Hold in
place with 12 x 0.55 mm zinc-coated steel straps at 600 mm maximum
centres.
S dng Qun tm cch nhit xung quanh ng hi/ ng khi. Gi cht bng dy
thp trng km 12 x 0,55mm khong cch tm ti a 600mm.
Sheathing General: Sheath insulation. Sheathing not exposed to
weather: 0.55 mm (minimum) zinc-coated steel sheet. Sheathing
exposed to weather: 0.55 mm (minimum) zinc-coated steel sheet or
0.8 mm (minimum) aluminium sheet. Joints: Lap joints in sheathing
at least 30 mm and rivet or screw at 150 mm maximum centres. Edges:
Neatly cut around nozzles and cone down to flanges. Terminations:
At terminations, return edges of sheathing to protect edges of
insulation.
Bao che kim loi Tng qut: Phi thc hin bao che kim loi cho lp cch
nhit. Bao che kim loi khng l ra ngoi tri: tm thp m km dy ti thiu
0,55mm hoc tm nhm dy ti thiu 0,8mm. Mi ni: Chng m mi ni kim loi bao
che ti thiu 30mm v bt rivet hay vis khong cch tm ti thiu 150mm.
Cnh: ct gn xung quanh l v to hnh nn chp xung mt bch. Ch kt thc: Lt
cnh tm kim loi bao che li bo v cnh ca lp cch nhit.