Tiêu chuẩn iso 03873 1977 scan

Printe in Sw itzerla d... highly loca lize reinforceme t... Helmets cla ime to me t th se re uireme ts sha ll sta te this with 7.2.. It sh uld b n te tha t, where a force tra nsdu er of

INT R A TIONA L OR A NIZA TION FOR STA NOA ROlZTlON 4fE nY HA POfiHA R OPrA HM3A UA fi n0 CTA HLIA PTA 3A UA A ~OR A NISA TION INT R A TIONA LE DE NORMA LISA TION

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Desc riptors : a cc ident prev ention, protection from fa lln bdies, sa fety dev ic es, helmets, spc ific a tion

i

Pric e bsed on 8 pges

IS0 (h Intern tio al Orga izatio for Sta d rdizatio ) is a w orldw id fe eratio

A ustrala

A ustria

Bulgaria

Fra ce

Hungary

Ira

Irela d

Isra l

Ita ly

Mexico

Neth rla ds

New Ze la d

Norway

Pola d

South A frica, Re

of

Sp in

Sw itzerla d

Turk y

U.S.S.R

Y ugosla ia

Belgium

0 Intern tio al Orga izatio for Sta d rdizatio , 19 7

Printe in Sw itzerla d

Industria l sa fety helmets

re uireme ts for in u tria l safety h lmets

me ts a re includ d to a pply o ly where sp c ific a lly ca lle

for

3 DE INIT IO NS

3.1 sa fety h fmet : A h lmet p rima riy inte d d to protect

th up er pa rt of a wearer’s h a a ga inst a blow

prov id s th ge era l form of th h lmet

eyes

a sorb sh ck

3.8 h lmet ac es ories : A ny a dditio a l pa rts for sp cia l

3.9 wea ring h ight : Vertica l dista nce from th lower e ge

h a dform

3.10 v ertica l clea ra nce : Vertica l dista ce b twee th to

a re giv en in a n x B

4.2 Ge era l co stru tio

tio of h lmets a re giv en in a n x B

highly loca lize reinforceme t

T he outer s rface sha ll b smo thly finish d a d all e ges

T he p rofie a t th fro t e ge of th sh l sha ll n t prev ent

th wea ring of sp cta cles or gog les

4.4 Vertica l clea ra nce

4.5 Horizo ta l clea ra nce

4.6 We ring h ight

wea ring h ight sha ll b n t les th n :

5.2.3 La tera l r iidity

with 7.2

in

5.1.2 Resista nce to p n tra tio

5.1.3 F la me resista nce

p rio of 5 s h s ela se a fter remov a l of th fla me

5.2 O ptio a l re uireme ts

sha ll me t th re uireme ts of 5.1 a d 5.1.2 resp ctiv ely

Helmets cla ime to me t th se re uireme ts sha ll sta te this

with 7.2

5.2.2 Electrica l ins la tio

sha ll n t ex e d I2 mA

re uireme t sha ll sta te this fa ct o th la bel ata ch d to th

h lmet, in ac ord nce with 7.2

a cces ories for sp cia l purp ses

for o e set of tests is as folows :

1 h lmet for sh ck a bsorptio test a t - 10 ‘C (or a t

- 2 “C);

co ditio s;

for fla mma bi ty test;

1 h lmet for resista ce to p n tra tio test

O ptio a l tests

1 h lmet for electrica l ins la tio test;

1 h lmet for la tera l r i idity test;

1 h lmet for th test for resista nce to p n tra tio a t

low temp ra ture

th sid s It sha ll b fite with a fa n to prov id efectiv e

a ir circ ula tio

6.2.2 Pre-co ditio ing

co ditio ing trea t e ts

6.2.3 L w temp ra ture

- 10 f 2 ‘C for n t les tha n 4 h Wh n esp cia lly re uire

6 -2.4 High temp ra ture

for a p rio of n t les tha n 4 h

A strik r, ha v ing a mas of 5,0 + t, k g a d a h misp erica l

h a dform so tha t its a xis coincid s with th vertica l a xis of

6.2.5 Moisture

2 + 2 ‘C a t th ra te of 1 I/ min for n t les th n 4 h

meta l

mounting

NOT -T hese coresp n to h a forms D, G a nd K oflSO/R 151

h a dforms is giv en in a n x A

th a ppro ria te size of h a dform

6.4 Verifica tio of cle ra nces a d we ring h ight

th la rgest a d sma llest size of h a form a ppro ria te to its

a dju tme t ra nge

6.5.1 Princ iple

6.5.2 Appa ratu

s fic ie tly la rge to ofer ful resista nce to th efect of th

blow It sha ll h v a mas of a t lea st 5 0 k g a d sha ll b

The h a dform sha ll b r i idly mounte in a v ertica l p sitio

strik r

1 0 0 Hz It sh uld b n te tha t, where a force tra nsdu er

of th mea suring s stem

6.5.3 T est proce ure

ro The strikr sha ll b a llowe to fa ll o th ce tre of th

sid of th strik r

A test strik r is a llowe to fa ll fre ly o to a h lmet sec rely

fa ste e to a s ita ble h a dform T he co ta cta ble s rfa ce of

T he strik r h s th folowing cha ra cteristic :

Mas : 3,0 i io k g

Angle of p int : 6 ”

Ra iu of p int : 0,5 mm

6.6.2 Test proce ure

of its remov a l from th co ditio ing atmosp ere it sha ll b

h a dform (6.3) a t its grea test p s ible wea ring h ight a d

of a IO m dia meter io

h lmet, within a c irc la r a re of 10 mm dia meter, throu h

strik r sha ll e ua l tha tof a fre fa ll

p rior to a s bse ue t test

6.7 F la mma bi ty test

sh ck a bsorptio test a t 5 ‘C

gas, with a 10 m dia meter b re, a a dju ta ble a ir v ent a d

pres ure co trol d v ice a d a ta p

The gas u e sha ll b pro a ne ha v ing a minimum purity of

9 %

6.7.2 Test proce ure

The fla me sha ll b a dju te by me ns of th a ir v ent so tha t

th blue co e is clea rly d fin d, a lth u h turbule t, a d is

to th vertic a l, th e d of th fla me sha ll b a pple to th

ta nge tia l to th test p int sha ll b h rizo ta l

The sh l sha ll b examin d for fla ming 5 s a fter remov a l of

th fla me

6.8 Elec tric a l ins la tio test

A v olta g! ln a rly a d gra dua lly increa sing within 1 m.n to

me s re

6.9 La tera l rigidity test

T he h lmet sha ll b teste tra nsv ersely (ea r to ea r) b twee

tw o g id d p a ra llel pla tes ha v ing th ir lower e ges ra diu e

to 10 m

les outsid , but as close to th pla tes as p s ible A n initial

force of 3 N sha ll b a pple to th pla tes a t right a ngles,

so tha t th h lmet is s bjecte to a la tera l pres ure Afer

sha ll a ga in b me s re

this Interna tio a l Sta da rd sha ll b visibly a d dura bly

a )

b)

cl

d)

e)

Numb r of this Interna tio a l Sta nd rd - IS0 3 7

Country of origin

Name or id ntific a tio mark of th ma nufa cturer

Yea r a d qua rter of ma ufa cture

folowing in th la ng age of th country of sa le :

a )

a dju te to th size of th u er’s h a d

This h lmet is ma e to a bsorb th e erg of a blow by

b) The mas , if this ex e ds 4 0 g Se 4.7

rea diy a ppa re t, a y h lmet s bjecte to sev ere impa ct

sh uld b re la ce

T he a tte tio of u ers is a lso drawn to th d nger of

pa rts of th h lmet.”

“d Jf for th la tera l rigidity re uireme t;

“4 0 V ” for th electrica l ins la tio re uireme t

Vertic a l Datum lev els a bov e

F or dimenion h,

se the ta ble

Profie blow r efer enc e lne

may b a men ed to sit

method of moutin

I

FIG RE 1 - Hea dform elev a tion

F ront

R eferenc e lne

F or pla r c o-ordina tes of

hor i onta l sec tion, se

the ta ble

Rea r

FIG RE 2 - Horizonta l ha lf-sec tion a t datum lev els

6

TA BL - Pola r c o-or dina tes of horizonta l ha lf-sec tion of hea dforms leter ed D, G a nd K

Dimen ion in mi metres

0

2

4

5

6

7

Hedform D - Dimen ion h = 9,5

16” 18”

8

8

9

Hea dform G

- Dimen ion h = 9

I

lev el

4

5

’

8,5

Hea dform K - Dimenion h = 10

lev el

I

0

10,5

2

10,5

4

9

5

91,5

6

5.5

101

9

9,5

91

8

7.5

6

5.5

5

9

9

9

9

8

7.5

6

5,5

5

3

3

2

2

T

I

4”

9

9

8

8.5

7.5

7

6,5

5

5

3

2.5

!

6”

8

8

8

7

7.5

6.5

6,5

5

4

3

2

5

5

4.5

4.5

10”

8.5

8.5

81.5

7

7

6.5

5,5

5

4,5

3

2.5

12” 13”

i

15”

9,5

9.5

9

9,5

8.5

8

7

6

6

5

3

A NN X A

gra in b ing displa ce by 9 ” from la yer to la yer Below th

p lsh

pro u ts a pple to th skin or ha ir) F or th se pa rts of th

th

ma nufacturers mu t n t u e m eria ls which a re k now n to

cau e irr ita tio F or a m eria l n t in ge era l u e, a dv ice

as to its s ita bi ty sh uld b sou ht b fore u e

a d n ces ary a dditio a l me ns of a bsorbing impa ct e erg

SO

tha t n t more tha n th pres rib d force is tra nsmite

w he teste in ac ord nce with this Interna tio a l Sta nda rd

reinforc ing ribs

T he h lmet is inte d d to giv e th wea rer protectio a ga inst

tha t giv en a t th test p int is efectiv e elsewh re

A ny d v ices fite to th h lmet sh uld b so d sign d tha t

th y a re unlk ly to cau e a y injury to th wea rer in th

h lmet s ch as might cau e injury

it sh uld b protecte a ga inst a bra sio

No pa rt of th sh ck-a bsorbing d v ice sh uld b ca pa ble of