Tiêu chuẩn iso 14112 1996 scan

IS0 c ola - or ates closely with the International Electrotec nical Commis ion IEC on all maters of electrotec nical stan ar dization.. T his International St an a r d is a pplc a ble to

INT ERNA T IONA L

F irs t e dition

1996-08-01

Matérielp urle so da e a g z - Pet s e sembles p urle brasa e et le

so da e a g z

This mater ial is re ro u ed from IS d c ments u der Inter natio al

Organizatio for Stan ar dizatio (ISO) Copyrig t Licen e n mb r

IHSlC l19 6 Not for r esale No p rt of these IS0d c ments may b

r epr od c ed in an for m, electr onic retr ieval s stem or other wise,ex e t a s

a llowed in the c pyrig t law of the c u try of us e , or with the prior writen

c n ent of IS0(Ca se po tale 5 ,121 Genev a 2 , Switzer lan , F ax 41 2

7 4 10 7 ) IH or the IS0Licen o s memb r s

Reference n mbe r

IS0 141 12 :19 9 6 ( E )

IS0 141 1 :1 9 (E)

-

For ew or d

IS0 (he International Organization for Stan ardization) is a worldwide fed-

er ation of national stan ar ds b dies (IS0 memb r b dies) T he work of

pr ep rin InternationalSt an a r ds is normaly car ried out throu h IS0 tec -

nic a l commite s Eac h memb r b d interested in a s bject for whic a

tec nical commite has b en esta ls ed ha s the r i ht to b r epresented

on that commite International or ganization , governmental a nd non-

governmental, in laison with ISO , a lso take p r t in the work IS0 c ola -

or ates closely with the International Electrotec nical Commis ion (IEC) on

all maters of electrotec nical stan ar dization

Draf International Stan ard ado ted by the tec nical commite s ar e

cir culated to the memb r b dies for votin Publcation as a n International

St an a r d r eq ires a ppr ov a l by at le st 7 % of the memb r b dies castin

a vote

International St an a r d IS0 141 12 was pr ep r ed by Tec nical Commite

ISOf lC 4 , Welding a daledproces es, Subcommite SC 8 , Eq ipme t

f r g s weldin , cut ng a daledproces es

8 IS019 6

Al r i hts r eser v ed Unles other wise s p e cifie d, n p art of this publc at io may b e r epr od ced

o r uti zed in any for m o r by an y me ans , elec tr onic o r me chanical inc lu in ph to opy in an

micr ofim with ut p rmis io in w r itin from the publs e

Inter natio al O rganiz atio for Stan ardizatio

Case po t ale 5 CH-I21 1Ge nève 2 0 Sw it zer la nd

Pr i ted inSw itzerlan

Gas w elding equipment - Smal k its for gas br azing and

1 Scope

T his International St an a r d sp cifies safety req ir e-

ments for the con tru tion of smal k its for b ra zin ,

solderin a ndweldin for non-pr ofes ional u e

T his International St an a r d is a pplc a ble to a ppla nc es

whose weldin eq ipment is completely set up in the

factory and whic u e a lq efied gas or gas mixture

as combu tible gas, and compres ed oxy gen, air or an

airlox genmixture for combu tion

It is a plc a ble to a pla nc es whic u e gases con-

tained in refi a le containers ha v in a maximumwater

c apa c ity of 5 ltr es, or in disp sa le containers with

maximumwater c apa c ity of 1 ltre

It is not a pplc a ble to the folowin :

- a pla nc es u in acetylene or h drogen as com-

- air -a spir a t ed a ppla nc es;

bu tible gas ;

- a pla nc es workin with an ox gen generato

- a pla nc es workin by electr oly is

2 Normat ive r ef r enc s

The folowin sta nda rds contain pr ovision whic ,

throu h referen e in this text, con titute pr ovision of

this International St an a r d At the time of publcation,

the edition in icated were vald Al sta nda rds a re

s bject to revision, an p r ties to agre ments b sed

on this International St an a r d a re enc our a ged to in-

vestigate the p s ibi ty of a plyin the most recent

edition of the sta nda rds in icated b low Memb rs

of IEC and IS0 maintain register s of c r rently vald

International St an a r ds

IS0 2 50 3:19 3, and A dd 1 :19 4, Pres ure re ulators

forg s cylnders usedin weldin , cut n a daled

proces es

IS0 3821 :19 2, Welding -Ru b rh ses forweldin ,

cut n a daledproces es

IS0 51 71 :19 5, Pres ure g u es used in weldin ,

cut n a daledproces es

IS05172 :19 5, Ma u l blowpip s forweldin , cut n

a dh atn - Sp cificato s a dtests

IS0 51 7 :19 7, Eq ipme t used in g s weldin , cut

tn a daledproces es - Safety de ices for fu l

sp cificato s, re uireme ts a d tests

IS090 90 :19 9, Gas tg tn s of e uipment forg s

weldin a daledproces es

IS0 9 39:19 8, Materials fore uipment usedin g s

weldin , cut n a daled proces es

IS0 1029 7:-’), Gas cylnderv lv s - Sp cificato s

a dtestn

IS0Il1 8:- l , No -refia le metalc g s cylnders

in sizes u to 5 l res - Sp cificato a d test

meth ds

IS0121 7 :-? Gas weldin e uipment - Th rmo-

plastc h ses forweldin a daledproces es

EN417:19 2, No -refia le metalc g s cartridg s for

lq efiedp trole m g ses, wih orwih ut a v lv , for

use wih p rta le a pla ces - Co structo , insp c-

to , testn a dmarkin

E 521:-l ), Dedicatedlq efiedp trole m g s a pl

a ces - Porta le a pla ces o eratn a t v p ur

pres ure from lq efiedp trole m g s co tain rs

1) T o be p blshed

1

IS0 141 2:19 6(E)

Q I S0

E N 8 7-1:-’), Pres ure g u es - PartI: Bo rda

tub pres ure g u es - Dime sio s, metrolo y, re-

q ireme ts a d testn

3 Definitions

F or the purp ses of this International St an a r d, the

folowin definition a pply

3 1 ap p lianc e: Smal k its for bra zin a nd w eldin ,

that generaly in lu e:

- the weldin eq ipment;

- the gas containers;

- the car ryin con tru tion;

- the in tr uction :

- the eye-pr otectin eq ipment;

- the ac es ories

3.2 we lding equip me nt: Set of devices (con ectin

dev ic es, gas controls, reg lators, safety devices,

hoses, blowpip s, etc.) as embled inthe factory

NOT E 1 Ac o rdin to the de sig of the weldin eq uip-

me nt, some de vice s m ay be u neces ary

3.3 n n- re f il a ble c o ntainer: Container desig ed to

b disp sed of when empty, for example:

- pierce ble car tr i ge;

- car trid e witha valv e;

- non-r efi a le c ln e

3.4 c o nnec ting devic : A p r t of the weldin

eq ipment desig ed to pr ovide the con ection to the

gas container

NOT E 2 it may b se arate or int egral w ith ano the r de vice

of he weldin eq ip men

3 5 s hut- o ff devic : Device whic controls the flow

of gas to the weldin eq ipment; it may b fited to

the container (c ln er valve or ta ) or to the weldin

eq ipment

3.6 g s c yln er valve: A pa rt, integral with a con-

ta ine pr ovided with a thre ded outlet an a ha nd-

whe l whic o en an closes the gas flow

3 7 pressure re gulat or: A p rt whic alow red c-

tion of the pr es ur e of the gas flowin out of the c on-

tainer; it may b adju ta le or pr e-adju ted, integral

withanother device, or se arate

3.8 s afe ty device: Device whic , when cor rectly

u ed an pla c ed, prevents damage res ltin from

mis se or malfu ction of the blowpip or as ociated

eq ipment

It may b :

- a non-r eturn va lve, whic prevents the pa ssa ge of

the gas in the direction o p site to nor mal flow; or

- a flame ar restor whic q en hes a flame front

(las b ck)

T he two fu ction may b as ociated in a sin le

dev ic e

3 9 c arrying c o ns t ruc t io : Str ucture whic alow s

container s, weldin eq ipment a nd ac es ories to b

car ried an whic sec res the ga s container s in a safe

p sition

3.10 a djust a ble blow pipe: Blowpip fited with a

valve on ea c h gas lne so as to control an adju t the

flame

NOT E 3 A blowp ip w ithout a valve is said to b ”n n-

adju t ab le

4.1 General

Al p r ts ofthe a plan e s al b fre from s arp cor -

ner s an ed es whic could give rise to injur y d rin

nor mal as embln , u e a nd maintenan e

Pa r t s a nd devices of the weldin eq ipment whic ar e

integral to its safe o eration s a ll b fit edsec rely so

as to avoid lo senin in nor mal u e Complan e s a ll

b c ecked d r i g testin

W eldin eq ipment, in lu in the con ectin device,

s a ll b tig t when tested ac or din to 7.2, b th b -

fore an afer the en uran e test des r ib d in 7.3

T he con ection of diferent p rts of the a plan e by

the u er s a ll b ea sy an safe Resp ctive p sition

of the p r ts s a ll b o viou Neces ary to ls an

in tru tion for safe as embly s a ll b s p led with

the a pla nc e

1) To b publshe d

ß IS0

4.2 Materials

Materials s a ll comply with r eq irements sp cified in

is0

9 3

4 3 Gas container s

I

4 3.1 Non-r ef il able g s conta ine rs

Pier c ea ble car trid es an car tr i ges with v alv es s a ll

comply with the req irements of E N 417 Cartrid es

for compres ed ox gen s ould comply with the rel-

evant future International St an a r d

Non-refi a le c ln er s s ould comply with IS01 1 8

or national stan ar ds or reg lation

4.3 2 Re fila ble co t ainers

Ref ila ble containers s ould comply with the r eq ire-

ments o f a pro riate future International St an a r ds or

nationalstan ar ds or r eg lation

4 4 Conne ting de vic

The con ectin device s a ll b desig ed to fit the

container sp cified by the man facturer It s a ll not

b p s ible to inter chan e the fuel gas an ox gen

containers

T he devices for car tr i ges for fuel gas s a ll comply

with the r elevant req irements of EN 5 1

4.5 Shut of de vic

It s a ll b p s ible to s ut of the gas s p ly q ickly

at ea c h gas container without dis on ectin the gas

containe

The device may b a se arate p r t ( a ) or integral

withanother p r t (e.g a reg lator)

If the s utof device is not an integral p r t of the

container, it s a ll b cle rly marked with the gas it

c o nt r o Is

If the device o erates by turnin , the closin direction

s a ll b clock wise an marked ina d ra le an visible

fas ion If the device has a fixed OF p sition, it s a ll

also b marked

It s a ll not b p s ible to remove u intentionaly that

p r t o f the device whic o en an closes the gas

flow

The b d of the device s a ll s ow no p r manent de-

formation when tested ac ordin to7.4.1

When the s utof device is a c ln er valv e (or ta ), it

s a ll comply with the req irements of IS010 9

IS0141 2:19 6( E)

4.6 P re s s ure r egulator

4 6 1 Ge ne ra l

T he gas circ it s a ll b pr ovided with a device for r e-

d cin the pr es ur e when the maximum ser vice

pr es ur e of the container (pres ure at 5 O )ex e d

the maximum work in pr es ur e of the hose or blow-

pip

T he device s a ll b so desig ed that it can ot b set

to give a pr es ur e ex e din the maximum work in

pr es ur e of the hose or the blowpip

4 6.2 Ga conta ine rs with a c yln er va lve

Fo r gas containers with a c ln er v alv e, adju ta le

pr es ur e reg lators s a ll comply with I S0 2 0

Pr eset pr es ur e reg lators may b u ed, pr ovided

that the stan ar d dis harge do s not ex e d

2 ,5 m3/h T hey s a ll comply with the safety req ir e-

ments given in IS02 0 con ernin materials, resist

anc e to inter nal ig ition, relef valve an mec anical

resistan e

Phy sic al c ar acteristic (pres ures an flows) are lef

to the man facturer ’ dis retion pr ovided the v alues

of the ir reg larity co ficient, i , an the co ficient o f

pr es ur e in re se up n c los r e,

R, comply with the

r eq irements of IS0 2 0

Pr es ur e ga uges s a ll comply with IS05171 For

pr es ur e gau es with non-stan ardized dimen ion

(size 4 mm), the req irements of IS05171 s a ll a -

ply ex e t for those de ln withdimen ion

4 6 3 Othe r co ta ine rs

Fo r other gas containers, the pr es ur e reg lators s a ll

comply withthe folowin r eq irements

a) T he b d of the device s a ll s ow neither defor -

mation nor da mage la ble to imp ir safety when

tested ac or din to 7.4.2 a)

b) When tested ac or din to 7.4.2 b), it s a ll b ver i-

fied that no pieces are ejected in the case o f rup-

ture in the device (e.g dia hr agm) If gas is

dis har ged to the atmospher e, it s a ll flow out in

a direction safe for the u e

c) For compres ed ga ses, the down tre m pr es ur e

s a ll b pr evented from ex e din 3 b ar in the

event of a reg lator f a ilur e, either by desig or by

pr ovision o f a pr es ur e-relef device

dl If there is an ox gen reg lator with a ser vice

pr es ur e not les than 2 b ar, it s a ll b resistant

to ig ition an s ow no inter nal da mage when

s bmited tothe ig itiontest given in7.5

3

48519O3 Ob57370 846 W

IS0 1 1 2:19 6(E)

@ IS0

e) The pres ure reg lator s a ll b d rably mark ed

withthe gas it is desig ed for

f A pres ure ga uge is not a req irement; if fited, it

s a ll comply with req irements for ga uges for

preset pres ure reg lators (se 4.6.2)

4.7 Safety de vice s

The a ppla nc e s a ll b protected aga in t b ck flow and

f las ba c k

A flame ar estor may b s bmited only to a static

mixture test (se 7.6.2 of IS0517 :19 7)

Sa f et y devices whic a re not integral with other p rts

of he a pla nc e s a ll comply with IS0517

Devices whic a re integral with p rt of the a ppla nc e

s all comply with 6 2.2 and 6.2.3 of

IS0

517 :19 7,

as a pr opr ia te In ad ition, pres ure resistan e an

tig tnes s a ll b c eck ed d rin testin of that p rt

whic in lu es the safety device

4.8 Ho s e s and hose -couplng nipples

Hoses s a ll comply with IS0 3 21 or with IS01217

In ivid al len th of hose s all not exc eed 3 m

Weldin eq ipment s a ll b s p led with hoses in a

fuly as embled con ition T he ten ie stren th of the

con ection b twe n hoses a nd hosecoupln nip-

ples s a ll b ina c c orda nc e with 7.6

Afer the test for stren th of hose con ection given

in 7 6 , the weldin eq ipment s a ll remain gastig t

d ri g s bseq ent testin for gas- ig tnes a c c ordin

to 7 2

The a pla nc e may b eq ip ed with either an adju t

a ble or a non-a dju t a ble blowpip

Blowpip s of al typ s s all comply with the fol owin

safety req irements inac c orda nc e with

IS0 51

7 :

- mec hanic a l stren th;

- valv e desig , if any ;

- resistan e to s stained b ck fire (by overhe tin

and oc lu ion)

Testin for b ck fire by oc lu ion is not req ired for

noz les ha v in a ratedflow of les than 15 Vh of com-

bu tible gas , me s red u der the normal work in

con ition sp cified by the man facturer

If an a ppla nc e has a non-adju ta le blowpip , it s a ll

b p s ible too taina n adeq at e neutral flame

As embly a nd dismantln of blowpip atac ments

s all b ea siy car ied out with the smal kit to ls pro-

v ided

Eac v alv e of an adju ta le blowpip s all b cle rly

mark edwiththe gas it controls

4.1 Car r ia e and stabi ty

The a pla nc e s a ll b provided with a caryin stru -

ture of a desig s ita le for the stor a ge, tran p r-

tation a nd u e of he gas containers and eq ipment

Liq efied gas containers s a ll b held in the caryin

stru ture in s c a man er that lq id can ot b

drawn of

T he caryin stru ture s a ll not p rmit ac umulation

of gas from ac idental leakage

Con tituent materials (ex e t for those con ernin

whe ls, if neces ary) s a ll b flame resistant when

tested ac ordin to 7.8

When tested ac ordin to 7.7, the a pla nc e s a ll not

tip ov er

4.11 Ey e-pr ote ting e uipme t

Eye-protectin eq ipment s a ll b s p led whic is

s ita le for the inten eda plcation of the k it

5 Mark ing

5.1 Ga contr ols

The gas s a ll b identified a nd c lea r ly mark ed on the

gas controls by either

- a leter:

O for oxy gen;

D for compres edair;

P for LPG~);

F for other lq efied combu tible gases; or

- a colour:

Blue

Bla c k for air;

Or a nge for combu tible gases

for oxy gen and a ir /oxy gen mixtures c on-

t a inin more than 2 % a dded ox gen;

2) Li q u id petroleum g s

@ IS0 IS01 1 2:1 9 1E)

5.2 A ppla c s

The folowin infor mation s all b c lea r ly v isibly and

d ra b ly ma r ked:

- identification of the man facturer a nd/or s p ler;

- identification of eq ipment typ or model

T he folowin in tru tion in the national lang age(s1

of he cou tr y(ies) where the a plan e is sold s a ll b

c lea r ly an p r manently marked at

a s ita le pla c e on

a ppla nc e:

a recommen ation to r ea d car efuly the complete

in tru tion for u e an con ection of the con-

tainers;

referen e to the typ of containers to b ex-

clu ively u ed;

in tru tion to con ect or c ha nge the containers

in a flame- or ig ition-re atmospher e, f a r re-

moved from other p r son ;

a w arnin not to u e gr ease or oi on p r ts in c on-

tact with ox gen;

a warnin that gog les are to b worn when the

a pla nc e is o eratin ;

in tr uction on how to sto the a ppla nc e safety

5.3 Dura iit y

A ll markin s s a ll b d ra b le; c ompla nc e s all b

c hec ked by r ub in the markin by ha nd for 15 s with a

piece of cloth soa ked with water a nd again for 15 s

witha piece o f cloth soa ked with p troleum spirit

L ab els, if u ed, s all b a dhesiv e ov er the whole at-

tac ment s r face; ordina r y p ap er s all not b u ed for

p rmanent la bel n

6 Instructions for use a d maintenance

T he a pla nc e s all b ac c ompa nied by in tr uction in

the na t iona l la ng a ge(s) o f the cou tr y(ies) where it is

sold

T he in tr uction s a ll inc lu e the folowin p ints

a) Re ad c aref uly the in tr uction b for e u in the

ap p lianc e Ke p this b oklet a nd rea d it when

nec es a r y

b) As embly a nd adju tment made in the factory s all

not b modified It may b da nger ou to try to

modify the adju tment or the con tr uction o f the

ap p lianc e, to dismantle some p rts or to u e com-

p nents other thanthose recommen ed

Ref erenc es to a nd sp cification for the containers

to b u ed:

- recommen ationto u e only the sp cified c on-

t a iner s; it may b dangerou to u e containers

other than those recommen ed;

- nev er con ect a c ont ainer b for e r ea din the

in tr uction pr i ted on it;

- r ef ila ble c ont ainer s s all only b refi ed by the

s p le refi in by another method may lea d

to seriou a c c ident s

Prec a ution to b taken b for e con ectin the c on-

ta ine

v er ify that se als, if an ,

at the con ection are

wel plac ed a nd not dama ged;

c hec k the hoses for dama ge;

do not u e an a p p lianc e whic s ows a ny

dama ge;

c lose the ta s of the a pla nc e b fore con ec-

tion

Con ec t the c ont ainer s in a w el-ventiated p lac e,

fre from f lame, or ig ition sources an f a r from

other p rson Do not smoke when c ha ngin c on-

tainers

How to con ect the containers:

- to ls to b u ed;

- ver ification

How to c ha nge the container s:

- for pierce ble car tr i ges: never c an e the

car tr i ge b fore b in s r e that it is com-

pletely empty

Do not u e grease or oi on p r ts in contact with

ox gen

How to u e the a plan e:

- do not put a n ig itedblowpip down;

- b car eful not to he t the container s or burn

the hoses;

- methodof c an in ac es ories,if any

Work in con ition :

- do not work in an en losed spa c e; maintain

go d ventiation;

5

IS0141 2:19 6(EI

Q IS0

- work only in a cle n plac e, far from combu t

- we r the ey e-pc ot ec t in eq ipment s p led;

ible or grea sed materials;

- we r non-gr eased clothes;

- avoid br eathin weldin /solderin fumes

k) Perf orman es an recommen ation for work in :

- ga s con umption (nor mal setin ) for e c

ac es ory;

- d r ation of the containers

I)

How to s ut downthe a ppla nc e:

- de res urize the hoses;

- alow the blowpip to co l b fore stowin

away

m) Stor age an tran p rt con ition :

- dis on ect the containers if the a ppla nc e is

not to be u ed for a pr olon ed p riod, or inthe

case of ran p r tation by vehicle;

- store an tran p rt the containers in an up-

rig t p sition;

- k ee away from c idr en

n) Maintenan e:

- u e only sp cified sp r e p r ts;

- never u e an a pla nc e with a damaged p r t

o) Ad res of afersales ser vice

p) What todo inc ase of fire:

- first s ut of the ox gen c ln er

q) What todo in c ase of lea ka ge

7 T ests

7.1 Ge eral

NOT 4 The de scribe d proced ure is a ty e t est fo r evalu-

a tion of th satisfa c tory pe rfo rman e and s fety of th

a plan e

T he pres ure gau es u ed for the me s r ement s a ll

b at le st of stan ardc la ss 1 of EN 8 7-1

7 2 Ga - ightne s te t

A gas-ig tnes test s a ll b car ried out on the com-

plete as embled weldin k it, in lu in the gas con-

tainer con ection, for ea c h p s ible config ration of

the k it

T he test method s allb in a c c orda nc e with IS09 0 9 0

L ea ka ge r ates for in ivid al comp nents s a ll satisfy

the req irements of I S0 9 0 9 0

Total lea ka ge s al not ex e d 3 cm3/h

NOT E 5 T o en ure the g as co ntaine r co nne ctio n is in-

clu e d i n the test, th test gas is no rmaly sup le d thr ou h

a c ln e r fitin simulat in th gas co ntaine r For pie rce -

a l e cartrid e s, th te t gas s p ly sho uld b plu ge d into

an empty cartrid e with its holder

7.3 Endura nc te t

T he n mb r of c cles to b p rformed s a ll b as

folows

a) Con ectin dev ic e:

1

O0

c on ec tion/disc on ec t ion

c cles Con ect the device ac or din to the

man facturer's in tru tion u in the to ls pr o-

vided, if an , with the sp cifiedtorq e

.b ) Sh t of device an pr es ur e r eg lator with s ut

of fu ction:

- 1 O0 c cles for an a plan e with an adju t

a le blowpip ; or

- 2 O0 c cles for a n a plan e with a non-adju t

ab le blowpip

A c cle con ists of an o enin an closin o er a -

tion at a freq en y of (6 I21min-' Carry out the

test u der an a ir pr es ur e of 0,5 ba r

Devices s c as ne dle valves s a ll b closed

witha torq e of 0 ,15 N-m minimum

c) V a lv es of adju ta le blowpip : 2 O0 c cles as

defined in b), with a closin torq e of 0,15 N m

minimum an freq en y a ndair pr es ur e as given

inb)

7.4 T est for re sist a nc e to pre ss ur e

The mec anical resistan e s a ll b c ecked for e c

device by me n of a h dr aulc pr es ur e a pledfor at

le st 5 min u der the folowin con ition

7 4.1 Sh tof devices: a ply a pr es ur e eq a l to

twice the test pr es ur e for car tr i ges an to the test

pr es ur e for the other containers, throu h the inlet

Q IS0

with the outlet c losed, the device b in in the o en

p sition When the s utof fu ction is fulfi ed by a

pr es ur e r eg lator, car ry out the test u der the c on-

dition given in 7.4.2

7.4.2 Pr es ur e reg lator: the stren th of the b d

an the protection of the low -pres ure cir cuit s a ll b

c ecked as folows

a) Str en th of the b d : hig -pres ure a nd

Iow-pr es ur e c amb r s s a ll b se arately tested

Parts whic con ect b th c amb r s (e.g r eg la-

tor valve) a nd the dia phra gm, if an , s a ll b

blanked or re laced by rigid blankin plu s if

neces ary

Pr es u ze the hig -pres ure c amb r throu h the

inlet to at le st 3 ba r or to the test pr es ur e of

the container to whic it is con ected

Pres u ze the low-pres ure c amb r throu h the

outlet to 3 ba r

b) Safety tests: these s a ll b car ried out with com-

pr es ed a ir The o erator s a ll b protected

again t p s ible ejection of p rts Maintain the

r eg lator valv e fuly o en a nd either fit the outlet

with a pr es ur e gau e ( or compres ed gases) or

plu it (or lq efied gases)

Ap ly an in re sin pr es ur e throu h the inlet, up

to the maximum ser vice pr es ur e of the container

normaly con ected to the pr es ur e r eg lator if no

ventin takes place

Complan e with the req irements given in 4.6.3 s a ll

IS0 141 2:199 (E)

7 5 Ignition test

Fo r ox gen reg lators, the test s a ll b p rformed in

a c c orda nc e with 10 5 3 of IS0 2 0 :19 3/Add 1 :1984,

but the test pr es ur e s a ll b in re sed to 1,2 times

the maximumfi in pr es ur e at 15 OC of he container

the pr es ur e reg lator is con ected to

7.6 Te t fo r str ength of ho s e c onne ct ions

The weldin eq ipment s a ll b fixed at one en an

the other en s bmited toa ten ie loa d o f 3 0 N

Perform the test simultane u ly for b th lnes

7.7 Stabi ity test

T he ful a plan e s a ll not tip over when placed on a

pla ne at anan le o f IOofromthe hor i ontal

Carry out the test with the a plan e placed in the

most u favoura le p sition with a ful ga s containe

Re e t it with an empty container

7.8 Inflammabi ity te t

Usin the blowpip with its largest noz le, o en an

adju t it ac or din to the man facturer's in tru tion ,

in or der to o tain a nor mal flame Ap ly the tip of the

fe ther of the flame for a p r iod of 10 s p r pen ic lar

to the s r face of he test material (se 4 10) an close

to its centre

Afer removin the flame, the material s al self

extin uis within 10 s

7

IS014 112:19 9 6 (E)

ICs 25 1 6 0 30

Des c rip to rs : weldin , g s w eldin , b ra zin , solde rin , weldin e uipme t, spe cif i a t ion , s f ety r eq ir eme ts, te ts, markin

P c ba e on 7 pa e