Tiêu chuẩn iso 07076 3 2016

© ISO 2016 Fire protection — Foam fire extinguishing systems — Part 3 Medium expansion foam equipment Protection contre l’incendie — Systèmes d’extinction d’incendie à mousse — Partie 3 Équipement pou[.]

Fire protection — Foam fire

Part 3:

Protection co tr l’inc ndie — S stème s d’e xtinction d’inc ndie à

mo sse —

Partie 3: Éq ipement p ur mo sse à mo en fison ement

Fir t edition

2 16-07-0

Refer ence n mb r

ISO 707 -3:2 16(E)

COPYRIGHT PROTECTED DOCUMENT

© ISO 2016, P blshed in Sw itz rlan

A ll rig hts r eserved Unles otherw ise spe ified, nopar of this p blc tion ma y be r epr od c d or utilz d otherw ise in an form

or b an me ns, ele tr onic or me hanic l, inclu in p oto opying , or postin on the internet or an intranet , w ithout prior

written permis ion Permis ion c n be req esed from either ISO at the ad r es below or ISO’s member bod y in the c u try of

the r eq eser

ISO c pyrig ht ofic

C de Blan on et 8 • C 4 1

CH-1 14 Vernier, Geneva, Sw itzerlan

F reword i v

1 Sc ope 1

2 Nor mati ve r eferenc es 1

3 Terms and definitions 2

4 Req irements 2

4.1 Conne tions 2

4.1.1 Pe manent conne tions an joints 2

4.1.2 Bolting of pr es ure-retaining p rts 2

4.2 Parts for r emo al d ring r outine field maintenanc 2

4.2.1 Remo al 2

4.2.2 Re-as embly 2

4.3 Corr osion r esis anc of metal p rt 2

4.4 Elas ome ic joint ring s 3

4.4.1 General 3

4.4.2 Resistanc to ag ing 3

4.4.3 Resistanc to ex osur e to lq ids 3

4.5 Plas ics an r einfor ced resin mate ials 3

4.5.1 General 3

4.5.2 Resistanc to ag eing 3

4.5.3 Resistanc to ex osur e to lq ids 4

4.6 Str eng th 4

4.7 Leak r esistanc 4

4.8 Dischar g e coeficient K factor) 4

4.9 Foam q alty 4

4.1 Wate flow 5

4.1 Operation r ela i ty 5

4.1 Str es corrosion 5

4.1 Salt-spra y corrosion 5

4.14 Light an wate ex osur e 5

4.1 Heat an fir e r esistanc 5

5 Test metho s 5

5.1 General 5

5.2 A g eing tes for plas icsan r einfor ced r esin mate ials 6

5.3 Liq id ex posur e tes 6

5.4 Eq ipment pr es urization tes 6

5.5 Leak r esistanc tes .6

5.6 Flow coeficient measur ement 6

5.7 Measur ement of ex pansion ratio an drainag e time 6

5.8 Wate flow tes 7

5.9 Operation r ela i ty tes 7

5.1 Str es corrosion tes 7

5.1 Salt-spra y corrosion tes .8

5.1 Light an wate ex osur e tes 8

5.1 Heat an fir e r esistanc tes 8

6 Mar king 8

7 Manufactur er’s instalatio and o eration instr uctions 9

A nne x A (normative) Toleranc es 10

Biblog raphy 11

ISO (he Int ernational Org nization for Stan ardization) is a worldwidefede ation of national s an ards

b dies (ISO membe b dies) The work of pr p ring Int ernational Stan ards is normaly car ied out

through ISO t ech ical committ ees Each membe b dy int er st ed in a subje t for w hich a t ech ical

committ ee has be n es a lshed has the right t o be r pr sent ed on that committ ee Int ernational

org nizations, g ove nmental an non-g ove nmental, in laison with ISO, also take part in the work

ISO cola orat es closely with the Int ernational Ele trot ech ical C mmis ion (IEC) on al matt ers of

ele trot ech ical s an ardization

The proc d r s used t o develo this document an those int en ed for it furthe maint enanc ar

desc ibed in the ISO/IEC Dir ctives, Part 1 In p rticular the dife ent a pro al c it eria ne ded for the

dife ent ty es of ISO document should be not ed This document was draft ed in ac ordanc with the

edit orial rules of the ISO/IEC Dir ctives, Part 2 ( e www.iso.org dir ctives)

A tt ention is drawn t o the p s ibi ity that some of the element of this document ma be the subje t of

p t ent right ISO shal not be held r sponsible for identifying any or al such p t ent right Detais of

any p t ent right identified d ring the develo ment of the document wi be in the Introd ction an / r

on the ISO ls of p t ent de larations r c ived ( e www.iso.org p t ent )

Any trade name used in this document is information given for the convenienc of use s an does not

cons itut e an en orsement

For an ex lanation on the meaning of ISO spe ific t erms an ex r s ions r lated to conformity as es ment,

as wel as information a out ISO’s adhe enc t o the Wor ld Trade Org nization (WTO ) principles in the

Te h ical Bar ie s to Trade (TBT) se the folowing URL: www.iso.org/ iso/for word.html

The committ ee r sp nsible for this document is ISO/TC2 , Eq ipment fr fir protec tio a d fir fig tin ,

Subcommitt ee SC6, Fo m a d p wde media a d fir fig tin sys tems us in fama d p wde

ISO 7 76 consis s of the folowing p rt , u de theg ene al title Fir protec tio — Fo m fir ex tin ui shin

sys tems:

— Part 1: Fo m pro ortio in eq ipment

— Part 2 : L w ex pa s io fam eq ipment

— Part 3 : Medium ex pa s ion f am eq ipment

— Part 4 : Hig expa s io fam eq ipment

— Part 5: Fixed c ompr s s ed air fameq ipment

— Part 6 : Vehicle mo nted c ompr s s ed air f am sys tems

Fire protection — Foam fire ex ting uishing systems —

Part 3:

This p rt of ISO 7 76 spe if ies r q ir ment an t es methods for medium ex ansion fo m eq ipment

of f ix ed-fo m extinguishing sy st ems for in o r or outdo r use or b th

2 Normati ve r eferences

The folowing document , in w hole or in p rt, ar normatively r fe enc d in this document an ar

in ispensa le for it a pl cation F or dat ed r fe enc s, only the edition cit ed a pl es F or u dat ed

r fe enc s, the lat es edition of the r fe enc d document ( inclu ing any amen ment )a pl es

ISO 7-1, Pipe thr ads whe e pr s s ure -tig t joints ar made o the thr ads — Part 1: Dimens io s,tole a c es

a d des ig ation

ISO 3 , Ru be , v ulc ani zed or the mo las tic — Dete min tion o tens ile s tr s s-s train pro erties

ISO 48, Ru be , v ulc ani zed or the mo las tic — Dete min tio o h rdnes s (h rdnes s bet we n 10 IRHD a d

10 IRHD)

ISO 1 5, Plas tic s — Meth ds o tes t fr the dete min tio o the efec ts o imme s io in lq id chemic als

ISO 1 9-1, Plas tic s — Dete min tio o Ch rp imp c t pro erties — Part 1: No -ns trumented imp c t tes t

ISO 1 0, Plas tic s — Dete min tio o Iz d imp c t s tr n th

ISO 1 8, R ub e , v ulc ani zed or thermo las tic — Ac c ele ated a ein a d heat r s i s ta c e tes ts

ISO 2 8-1, Pipe thr ads whe e pr s s ur -tig t joint ar n t made o the thr ads — Part 1: Dimens io s,

tole a c es a d des ig atio

ISO 2 2, Fas tene s — Hex g n produc ts — Widths ac ros s flat

ISO 5 7-1, Plas tic s — Dete min tion o tens ile pro erties — Part 1: G ene al princ iples

ISO 88 , G ene al p rp s e b lts a d s c rews — Metric s eries — Radi u de the head

ISO 8 8-1, Mecha ic al pro erties o fs tene s made o c arb n s te l a d alo s te l — Part 1: B olts , sc rews

a d s tuds w ith s pec ified pro ert y clas ses — Co rs e thr ad a d fine pitch thr ad

ISO 8 8- 2, Mecha ic al pro erties o fs tene s made o c arb n s te l a d alo s te l — Part 2 : Nuts w ith

s pec ified pro ert y clas ses — Co rs e thr ad a d fine pitch thr ad

ISO 1 7 -1, Co nec tio s fr gene al use a d fluid p we — Ports a d s tud ends w ith ISO 2 28 -1 thr ads w ith

elas tome ic or metalto-metal s ealn — Part 1: Thr aded p rts

ISO 1 1 , Ru be , v ulc ani zed or the mo las tic — Dete min tion o the efec t o lq ids

ISO 47 9-1, Tole a c es fr f s tene s — Part 1: B olts , s c rews , s tuds a d n t — Produc t grades A, B a d C

ISO 7 0 -1, Pipe fla ges — Part 1: Ste l fla ges fr indus trial a d gene al s erv ice pipin sys tems

ISO 7 0 - 2, Metal c fla ges — Part 2 : Cas t iro fla ges

ISO 7 0 - 2:2 1 , Fir ex tin ui shin media — Fo m c onc entrates — Part 2 : S ec ific ation fr medium- a d

hig -expa s io f am c onc entrates fr to a plc atio to wate -mmi sc ible lq ids

ISO 9 2 , Cor os io tes ts in artific ial atmos phe es — S lt s pra tes ts

ASTM D6 8, Sta dard tes t meth d fr tens ile pro erties o plas tic s

ASTM G 15 , Sta dard prac tic e fr o e atin xen n ar lg t a p ratus fr ex pos ur o n n-metal c

mate ial s

3 Terms and definitions

F or the purposes of this document, the fol owing t erms and def initionsa ply

3.1

medium ex ansio foam

fo m with 2 t o 2 0ex ansion ratio rang e

4.1.1 P ermanent c onnections and joints

Pe manent joint shal conform t o ISO 7-1, ISO 2 8-1, ISO 1 7 -1, ISO 7 0 -1or ISO 7 0 - 2, as a plca le,

or shal conform t o othe t echnical spe if ications v ld in the plac of use w he e Int ernational Stan ards

ar not a pl ca le

4.1.2 Bolting of pr es ure-retaining par ts

Bolt , n t or s u s or b th used t o fast en pr s ur -r taining part shal conform t o ISO 2 2, ISO 8 5

an ISO 47 9-1 or shal conform t o othe t echnical spe if ications v ld in the plac of use w he e

Int ernational Stan ards ar not a plca le

4.2 Parts for removal during routine field maintenanc e

4.2.1 Remo al

Part int en ed for r mo al d ring routine field maint enanc shal be ac es ible, r mo a le an

r plac a le without damag e using a pro riat e t ools normal y used b the trade or spe ial t ools

r commen ed b the component man factur r

4.2.2 Re-as embl y

The design an cons ruction of any part int en ed for r mo al d ring routine f ield maint enanc shal be

such that it can ot be r -as embled in a man e othe than as int en ed

4.3 Corrosion r esistanc e of metal parts

Part of comp nent that ar ex osed t o fo m conc ntrat e or fo m solution shal be r sis ant t o

cor osion from that ex osur

Part of comp nent that ar int en ed t o fr ely mo e d ring o e ation or bear a ains , rotat e within,

or sl de on s ationary p rt shal be of a cor osion-r sis ant mat erial

NOTE Bronze is a ty ical mat erial that has cor osion-resistant properties when e posed t o fo m concentrat e

or fo m solution

4.4 Elastomeric joint ring s

4.4.1 General

Elas ome ic joint rings shal have the folowing pro e ties when tes ed in ac ordanc with ISO 3

an ISO 48

a) F or as-r c ived si cone rub e with b sic cons ituent of p ly-org no-sio ane, a minimum t ensi e

s r ngth of 3,4 MPa, a minimum ultimat e elong tion of 1 0 %, an a hard es within ± u it of

theman factur r’ s spe ification

b) F or as-r c ived fluoroelast ome s, a minimum t ensieof 6, 9 MPa, a minimum ultimat e elong tion of

1 0 %, an a hard es within ± unit of the man factur r’s spe ification

c) F or as-r c ived natural rub e an as-r c ived synthetic rub e othe than si icone or

fluoroelast ome s, a minimum t ensie of 8,3 MPa, a minimum ultimat e elong tion of 1 0 % an a

hard es within ± unit of the man factur r’ s spe ification

4.4.2 Resistanc e to ag ing

When t est ed in ac ordanc with ISO 1 8, the phy sical pro e ties of elast ome ic joint rings aft er o en

ag eing at 1 0 °C ± °C for 7 h shal be at leas 6 % of the as-r c ived t ensi e s r ngth an elong tion

v lues Any chang e in the hard es shal not ex ce d 5 % of the as-r c ived v lue

4.4.3 Resistanc e to ex posur e to l q ids

Elast ome ic joint rings shal ha ethe folowing pro e ties w hen t est ed in ac ordanc with ISO 1 1

a) The phy sical pro e ties ofa mat erial in contin ous contact with fo m lq id conc ntrat e, aft er

ex osur t o the fo m lq id conc ntrat e at 7 °C ± °C for 6 d shal be at leas 6 % of the

as-r c ived t ensi e s r ngth an elong tion v lues

b) The phy sical pro e ties of a mat erial in contin ous contact with the fo m solution, aft er ex osur

t o the fo m solution at 7 °C ± °C for 6 d shal be at leas 6 % of the as-r c ived t ensie s r ngth

an elong tion v lues

NOTE F or a material that is in contin ous contact with either fo m liq id concentrate or fo m solution,

compliance with 4.4.3 a)is considered representative of 4.4.3 b)

4.5 Plastic and r einforc ed r esin materials

4.5.1 General

Plas ic or r infor ed r sin comp nent , w hich ar es ential t o the o e ation or safety of the prod ct,

shal me t the r lev nt r q ir ment of 4.5.2 an 4.5.3

4.5.2 Resistanc e to ag eing

Aft er ag eing in ac ordanc with 5.2 an the a pro riat e se tions of ISO 5 7-1, ISO 1 9-1 an ISO 1 0,

spe imens of plas ics an r infor ed r sin mat erials used for comp nent shal

a) ha e a t ensie s r ngth of no les than 5 % of the v lue befor ex osur ,

b) ha e an elong tion at br ak of no les than 5 % of the v lue befor ex osur , or

c) ha e an imp ct s r ngth of no les than 5 % of the v luebefor ex osur ( his method isr lev nt

t o s if plas ics, i.e flexible plas icsshal be ev luat ed using the t ensie t es ), an

d) show no signs of c acking

4.5.3 Resistanc e to ex posur e to l q ids

Plas ics an r infor ed r sin mat erials w hich come int o contact with fo m conc ntrat e, fo m solution

aft er ex osur t o the p rticular lq id in ac ordanc with 5.3and the a pro riat e se tions of ISO 5 7-1,

ISO 1 9-1 an ISO 1 0, shal

a) ha e a t ensie s r ngth of no les than 5 % of the v lue befor ex osur ,

b) ha e an elong tion at br ak of no les than 5 % of the v lue befor ex osur , or

c) ha e an imp ct s r ngth of no les than 5 % of the v luebefor ex osur ( his method isr lev nt

t o s if plas ics, i.e flexible plas icsshal be ev luat ed using the t ensie t es ), an

d) show no signs of c acking

4.6 Streng th

4.6.1 T e pr es ur e-r etaining eq ipment shal withs an , without ruptur e, an inte nal hydr ostatic

pr es ure of four times the ma imum wor king pres ur e for a pe iod of 5 min when tes ed as spe ified in

5.4 The tes in 5.4 is a la or atory tes that cho ses one sample fr om 1 0 or les manufactur ed

4.6.2 T e calculated desig n lo d of any fas ene , negle ting the for ce r eq ir ed to compres the gasket ,

shal not exc ed the minimum tensie streng th spe ified in ISO 8 8-1 an ISO 8 8-2 when the eq ipment

is pr es uriz d to four times the ma imum wor king pr es ure The ar ea of the a plcation of pr es ur e shal

be calculated as folows:

a) If a ful-fac g sket is used, the ar a of a plcation of pr s ur is that ext en ing out t o a lne def ined

b the c ntr l ne of the b lt

b) If an “O” ring seal or ring g sket is used, the ar a of a plcation of for e is that ext en ing out t o the

c ntr lne of the “O”-ring or g sket

4.7 Le k r esistanc e

The pr s ur -r taining eq ipment, shal withs an , for 5 min without leakag e, an int ernal hydros atic

pr s ur of 1,5 times the ma imum working pr s ur spe if ied b the man factur r, w hen t est ed in

ac ordanc with 5.5

4.8 Dis har g e c oeficient (K factor )

The discharg e coeff icient (K fact or) shal be within ± % of the v lue s at ed b the man factur r w hen

det ermined in ac ordanc with 5.6

4.9 F am qual ty

The ex ansion and drainag e time of fo m prod c d b medium ex ansion fo m eq ipment, using

the fo m conc ntrat e r commen ed b the man factur r, shal conform t o the v lues s at ed b the

eq ipment man factur r w hen t est ed in ac ordanc with 5.7

4.10 Water flow

The medium ex ansion fo m eq ipment hal show no lo se p rt or leakag e w hen t est ed in ac ordanc

with 5.8

4.11 Operation rel abi ity

The spring, slde and othe mo a le part of medium ex ansion fo m eq ipment shal be t est ed

in ivid aly in ac ordanc with 5 9 Aft er t es ing, the mo a le p rt shal be r ins aled in the medium

ex ansion fo m eq ipment, an the eq ipment hal o e at e pro e ly

4.12 Str es c or r osion

Aft er being subje t ed t o the con itions desc ibed in 5.1 , a bras p rt containing gr at er than 1 % zinc

shal comply with the folowing r q ir ment :

a) show no evidenc of c acking w hen ex mined using 2 × ma nif ication;

b) if the e is evidenc of c acking of pr s ur -r taining eq ipment, comply with 4.6 at 2 times the

ma imum working pr s ur rathe than 4 times the ma imum working pr s ur ;

c) if the e isevidenc of c acking of eq ipment hat is not pr s ur -r taining, comply with 4.1

4.13 S lt-spray c orrosion

Aft er being subje t ed t o the con ition desc ibed in 5.1 , eq ipment cons ruct ed from metal c part

using combinations of bras , bronz or fe rous metals shal show no des ruction or damag e w hich

imp irs function

4.14 Lig ht and water e x posure

F olowing lght and wat er ex osur for 7 0 h, as spe if ied in 5.1 , an ext erior polyme ic or f ibr glas

comp nent p rt or samples pr par d from the same ext erior p lyme ic or fibr glas comp nent

mat erial shal comply with the folowing r q ir ment :

a) shal show no evidenc of c acking;

b) a comp nent p rt that ne ds not be cut or alter d in orde to be subje ted to the ex osur shal

fu ction as inten ed w hen o e ated at it ma im um inlet pr s ur an ma im um flow rate for 2 min;

c) a comp nent p rt that ne ds t o be cut or alt er d in orde t o be subje t ed t o the ex osur shal

have phy sical pro e ties not les than 6 % of the original as-r c ived phy sical pro e ties w hen

subje t ed t o t ensi e t es s desc ibed in ASTM D63

4.15 He t and fir e resistanc e

Aft er being subje t ed t o the con ition desc ibed in 5.1 , fo m discharg e devic s int en ed t o be ins aled

in the ar a of f ir shal

a) show no des ruction or damag e w hich impairs function, and

b) me t the r q ir ment of 4.8an 4.9

5.1 General

The folowing t es s shal be car ied out or each ty e of medium ex ansion fo m eq ipment

Tes s shal be car ied out at ambient t empe atur s of 2 °C ± 0 °C, u les othe t empe atur s ar

in icat ed Unles s at ed othe wise, the t ole anc s given in An ex A shal a ply

5.2 A g eing test for plastic and reinforc ed resin mater ials

Plac f ive spe imens of the mat erial un e t es in an air t ole anc o en at 1 0 °C ±2 °Cfor 9 d Alow t o

co l in air at 2 °C ± °C for 24 h ±4 h befor t es ing

NOTE Certain plastic req ire a lower oven temperature In such cases, if the ac eleration factor are

u k own, it is as umed that the lowering of the temperature by 1 °C implies a doubling of the a eing time

5.3 Liquid ex posure test

Imme se five samplesin fo m conc ntrat e or fo m solution with w hich the mat erial comes int o contact,

in ac ordanc with ISO 1 5, for 2 0 d at 5 °C ± °C The ty e of fo m conc ntrat e an the p ramet ers

of fo m solution shal be r commen ed b the eq ipment man factur r

NOTE For a sample that is in contin ous contact with either fo m concentrat e or fo m solution, compliance

with the test in fo m concentrate is considered representative of the t est in fo m solution

5.4 Equipment pr es ur ization test

The medium ex ansion fo m eq ipment shal be fast ened in the t es devic Blan of or plug al

orif ic s Fi l the medium ex ansion fo m eq ipment with wat er, close the vent air an pr s uriz the

hydros atic pr s ur four times the ma imum working pr s ur an maintain this pr s ur for 5 min

The t es r sult shal me t the r q ir ment of 4.6

5.5 Le k r esistanc e test

The medium ex ansion fo m eq ipment shal be ins aled on the pipelne Blan of or plug al orif ic s,

lea ing one con e tion for pr s urization an an outlet fitt ed with a suita le v lve for venting air

Fi l the eq ipment with wat er, close the air vent an pr s uriz from z ro, at a rat e not ex ce ding

0,2 MPa s(2 b r/s), t o not les than 1,5 times the ma imum working pr s ur an maintain for 5 min

The t es r sult shal me t the r q ir ment of 4.7

5.6 Flow coeficient measur ement

Measur ment is t o be taken with eithe wat er or fo m solution Themedium ex ansion fo m eq ipment

shal be ins aled in the pipelne as int en ed The diamet er of the inlet pipe shal be the same or much

larg er than that of the discharg e orif ic of the fo m eq ipment R ecord flow rat es at the minimum,

a pro imat e median an ma imum inlet pr s ur s or mor than these thr e inlet pr s ur s

The discharg e coefficient K fact or) shal be calculat ed using the formula as given in ISO 7 76- 2:2 1 , 3.2

an the mean v lue of the K fact or shal me t the r q ir ment of 4.8

5.7 Measurement of ex pansion ratio and drainag e time

The eq ipment shal be ins aled in the pipework as it int en ed use F oam conc ntrat e r commen ed

b the eq ipment man factur r shal be used The t empe atur of fo m conc ntrat e shal be within the

rang es spe if ied b the fo m conc ntrat e sup le

The enclosur used for det ermining ex ansion ratio shal be of a siz such that at leas 6 s ar r q ir d

prior t o r cording the depth of the fo m The length an width of the enclosur shal be measur d prior

t o the t es s an the enclosur ar a calculat ed F oam is t o be discharg ed at the minimum, normal an

ma imum inlet pr s ur F or each t es , the flow rat e, inlet pr s ur , time an cor esp n ing depth of