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| ICS 3.20
Trang 2The s ar and finish of text int oduced or altered b amend ment is indicated
in the text b tag s Tag s ind icating chang es to CEN text car y the n mber of
the CEN amendment For ex mple, text altered b CEN amend ment A1 is
indicated b !"
The UK p r icip tion in it prep ration was ent us ed b Tech ical
Commit e MCE/3, Safeg uarding of machinery, to Subcommite MCE/3/2,
Rub er an plas ic machine — Safety
A ls of org anizations represented on this subcommit e can be obtained on
reques to it sec etary
This publ cation do s not purpor to includ e al the neces ary provisions of
a cont ac User are responsible for it cor ec a pl cation
Compl anc with a British Standard cannot confer im munity f om
leg al o l g ations
Amendments/cor ig enda is ued sinc publ cation
Date
Comment
3 Ju e 20 9
Implementation of CEN amendment A1:20 8
This Bri sh Stan ard was
publshed u d er the authoriy
of the Stan ards Bo rd an
comes into efect on
1 Decemb r 1 9
© BSI 2 0
Trang 3N ORM E EU ROPÉEN NE
Au u t 2 0
En ls V ersion
Plast ic s and rubber mac hines - R eac t ion moulding machines -
Part 1: Safet y requirement s for met ering and mixing unit s
Ma hin s p ur le mat ière pla tiq e et le c o t ch u -
Ma hin s d mo la e p r ré ct io - Part ie 1:Pre cript io s
d s c rit é relativ es a x u it és d d s g et d méla g
K un t stof u d Gummima c in n -
R eak t io s ießma c in n - Tei 1:
Sic erh it sa ford ru g n a Mis h- u d Do ierein eite
This Euro e n St an ard wa a prov ed b CEN o 1 July 19 7 a d in lu e A me dme t 1 a prov ed b CEN o 8 Ju e 2 0
CEN memb rs are b u d t o c mply with th CEN/ CENELEC Intern l R eg lat io s whic st ip late t he c n it io s for giv in t his Euro e n
St an ard t he stat us of a n t io al sta d rd with ut a y lt erat io Up-to-d te lsts a d biblo ra hic l refere c s c n ernin s c n t io al
st an ard ma b o t ain d o a plc tio to th CEN Ma a eme t Ce t re or to a y CEN memb r
This Euro e n St an ard e ists in t hre oficial v ersio s (En ls , Fre c , Germa ).A v ersio in a y t her la g a e ma e b tra slat io
u d r t he re p n ibi t y of a CEN memb r int o its own la g a e a d n tifie to t he CEN Ma a eme t Ce t re h s th s me st atu a th
oficial v ersio s
CEN memb rs are t he n t io al sta d rd b die of A ustria,Belgium, Bulg ria, Cy pru ,Cz c R ep blc, De mark ,Esto ia, Finla d,
Fra c , Germa y ,Gre c , Hu g ry , Ic la d,Irela d, It aly , L t v ia, Lit hu nia,L x mb urg, Malta, Net herla d , Norway , Pola d, Portu al
R oma ia, Slov ak ia,Slov enia,Sp in, Swe e , Swit zerla d a d Unite K in d m
E U ROPEA N COMMI TTE E FO STA N DA RDI ZA TI ON
COMIT EUR PÉ N DE N RMALISATION
EU OPÄISCHES K MIT E FÜR NO MU G
Management Cent re: rue de St as art , 3 B- 10 0 Brus els
© 2 0 CEN All rig ts of e ploit at io in a y form a d b a y me n re erv ed
worldwid for CEN n t io al Memb rs
R ef No EN 1612- :19 7 A1:2 0 : E
Trang 4Cont ent s Page
Foreword .3
Int rod c on 4
1 Scope 4
2 Norma v refere c s .4
3 Definit ion 5
4 List of h zard 6
5 Safety re uireme t s a d/ or me s re 6
6 Verific t ion of t he s fety re uireme t s a d/or me s re 8
7 Informa on for u e .9
An e ZA (informat iv e) !R ela ons ip bet we n this Europe n Sta dard a d t he Es e tial R eq ireme ts of EU Direc v 9 /3 /EC" 1
An e ZB (informat iv e) !R ela ons ip bet we n t his Europe n Sta dard a d t he Es e t i l
Req ireme ts of EU Directiv 2 0 /42/ EC" .12
Trang 5Foreword
This doc ment (EN 1612-1:19 7 A1:2 0 ) has b en pre ared by Tec nical Commit t ee CEN/TC 14
“Plastic an rub er mac ines”, t he secretariat of w hic is held by UNI
This Euro e n St an ard s al b given t he st atu of a nat ional st an ard, eit her by publcat ion of an ident ical
t ex t or by en orsemen at t he lat est by F bruar y 2 0 , an conflct in nat ional st an ard s al b w it hdraw n
at t he lat est by Decemb r 2 0
This doc ment in lu es A men ment 1, a prov ed by CEN on 2 0 -0 -0 The main c an es comp red t o t he
previou v ersion are:
• Modificat ion of t he main element of t he t i e
• Edit orial modificat ion of A nne ZA
• Addit ion of Anne Z
• editorial c an es of EN 2 2-1:19 1 to EN ISO 1210 -1 an of EN 2 2-2:19 1 to EN ISO 1210
-2:2 0 in the folow in clau es: Int rod ction, 2, 7
This doc ment s p rsedes EN 1612-1:19 7
The st art an finis of t ex t int rod ced or alt ered by amen ment is in icat ed in t he t ex t by t ag ! "
This Euro e n Stan ard has b en pre ared u der a man at e giv en t o CEN by the Euro e n Commis ion
an the Euro e n Fre Trade Associat ion, an s p or t s es ent ial req irement s of EU Direct iv e(s)
!For relation hip w it h EU Direct iv e(s), se informat ive A nnex es ZA an Z , w hic are integral p rt s of t his
doc men "
Ac ordin t o t he CEN/CENELEC Internal Reg lat ion , t he national st an ard organization of t he folow in
cou t ries are b u d t o implement t his Euro e n St an ard: Au t ria, Belgium, Bulga a, Cypru , Czec
R epublc, Denmark, Est onia, Finlan , Fran e, German , Gre ce, Hu gary, Icelan , Irelan , It aly, L t via,
Lit huania, Lux emb urg, Malt a, Netherlan s, Nor way, Polan , Port ugal, R omania, Slov akia, Slovenia, Sp in,
Sweden, Sw itzerlan an United Kin dom
Trang 6Int roduct ion
This Euro e n St an ard is a typ C Stan ard as defined in !EN ISO 1210 "
The ex t ent t o w hic hazar ds are cov ered is in icat ed in the s o e of t his st an ard In ad it ion, mac inery
s al comply as a pro riat e w it h !EN ISO 1210 " for haz ard w hic are not cov ered by this st an ard
This st an ard sp cifies the he lt h an safety req ir ement s for t he desig of met erin an mix in u it s for
re ct ion mouldin mac ines The sig ificant an sp cific hazard are lst ed in clau e 4 an are de lt wit h in
t his st an ard
This st an ard do s not cov er complet ely the hazard arisin fom t he u e of hig ly flamma le ad it iv es, for
ex ample, p nt ane u ed as a blow in agent (se 4.7), b cau e t hese hazard de en t o a large ex t ent on the
ad it iv es an proces es u ed
This st an ard do s not cov er t he hazard arisin fom t he as embly of se arat e u it s not s p led at the
same t ime by t he same man fact urer
This st an ard do s not cover t he hazard arisin fom t he mov ement of p w ered mix in he d ; for t hese, se
!EN 1612-2"
This st an ard a ples to met erin an mix in u it s man fact ured aft er t he dat e of publcation of t his st an ard
2 Normat ive references
This st an ard in orp rates by dated or u dat ed referen e provision fom ot her publcat ion These normat ive
referen es are cit ed at a pro riat e places in the tex t an t he publcat ion are lst ed here ft er F r dat ed
referen es, s bseq ent amen ment s t o or rev ision of an of t hese publcation a ply t o t his Euro e n
St an ard only w hen in orp rat ed in it by amen ment or revision F r u dat ed referen es the latest edit ion of
t he publcation refered t o a ples
!deleted te t"
EN 418:19 2, S afety ofmachin ry - Emerg ncy s to equipme t, fu ctio al as pects - Principle for des ig
EN 5 3, Safety ofmachin ry - Temp rature ofto ucha le s uraces - Erg no mics data to es ta ls h lmit v lu s
for h t s uraces
EN 9 4-1, Safety ofma hin ry - Safety related p rts of control sys tems - Part 1: Ge eral principles for desig n
!EN 10 5", Safety of machin ry – Huma p ys ic al p rorma ce
EN 6 2 4-1:19 2, Safety ofmachin ry - Electrical eq uip me t ofmachin s - Part 1: Ge eral requ ireme ts
!(IEC 60204 - 1: 199 2, modified)"
!EN ISO 1210 -1, Safety o f machin ry - B as ic c oncepts , g n ral p rinciple for des ig - Part 1: B as ic
termin lo y, meth dolo y (ISO 12 10 -1: 2003)
Trang 7EN ISO 1210 -2:2 0 , Safety ofmachin ry - Bas ic concepts , g n ral p rinciple for desig - Part 2: Technical
p rinciple (ISO 12 10 - 2 : 2003)"
3 Definit ions
F r t he purp ses of t his st an ard, t he folow in definition a ply (se fig r e 1):
3.1
work ing t an
a t an w hic is p rt of t he met erin an mix in u it an contain one of t he comp nent s
3.2
met erin u it
a u it for met erin t he comp nent s
3.3
mix in he d
t he p rt of t he met erin an mixin u it for mix in an delv ery whic can b man aly o erated or p w ered (if
p wered, se !EN 1612-2")
3.4
highly flammable a ditiv
an ad it iv e w it h a flas p int ≤ 21°C
NOT E For t he mome t th re is n Euro e n Direc tiv e or St an ard in e ist ence
K ey
1 w orkin t an
2 met erin u it
3 mix in he d
Fig re 1 — Ex ample of a meterin a d mix in unit
Trang 84.2 Hazard d e t o in t abi ty
4.3 Hazard d e t o w hiplas of hoses folowin rupt ure or dis on ect ion
4.4 Hazard d e t o fluid eject ion
4.5 Hazard d e t o overpres ure
4.6 Hazard d e t o elev at ed t emp rat ures of man aly o erat ed mix in he d whic can cau e eit her burn
or u ex pect ed re ct ion on t he p rt of t he o erat or
4.7 Hazard d e t o cont act w ith t he comp nent s, ad itiv es or a mix t ure of t hem or d e t o the in alat ion of
gases dan erou t o he lt h
Durin man al fi in of t he w orkin t an s;
Due to le kage;
Durin delv ery of prod ct hrou h t he mix in he d
4.8 Hazard d e t o in orect con ect ion of hoses
4.9 Hazard d e t o ex plosion w here hig ly flamma le ad itives are u ed
4.10 Hazard d e t o neglect of ergonomic prin iples
4.1 Elect r ical hazard
4.12 Hazard d e t o faiure of t he cont rol circ it
5 Safety requirements and/or mea ures
5.1 Hazards due to moving coupl ngs
The ex posed coupln s b tw een pumps an mot ors s al b protect ed by fix ed g ard
5.2 Hazards due to insta i ty
Where in e en ent fix in s are u ed to s p ort t he mix in he d they s al b b lted to t he flo r Se also
clau e 7
5.3 Hazards due to whiplash of hoses
Whiplas of hoses s al b prev ent ed, for ex ample by:
Bin in the hoses t oget her;
Trang 9 At t ac in t he hoses to a fixed p rt
This s al b done at le st ev ery 7 cm
In ad it ion, flex ible hoses an t heir con ection s al b desig ed t o prev ent t earin fom t heir fit t in s an
u int ent ional det ac ment fom con ect ion p int s
Flex ible hoses s al not b u ed t o s p ort t he mix in he d
5.4 Hazards due to fluid eje tion
Hose as embles s al b marked at t heir con ection p int s w it h the nominal pres ure, mont h an ye r of
man fact ure an t he name of t he man fact urer
Becau e of t he ne d t o r eplace hoses (se clau e 7) a s ot cou t er s al b prov ided for met erin an mix in
u it s w hic w ork at a pres ure of more t han 3 b r
Adju t ment devices on t he mix in he d, for ex ample s rews or pin s al b desig ed in s c a w ay t hat t hey
are ret ained in t he he d so t hat u intentional complete remov al of t hese devices an t he res lt in out flow of
fluid is prev ent ed
It s al not b p s ible for fluid to b rele sed fom t he mix in he d d e to
F iure of t he energ s p ly an /or
Unex pect ed rest oration of the energ s p ly
This may b ac ieved for ex ample
By me n of a v alv e whic s al automat icaly close in case of an faiure of t he energ s p ly;
By a req irement t o restart t he mac ine at t he cont rol p nel aft er an faiure of t he energ s p ly
The safety related p rt s of t he cont rol s stem for t he mix in he d s al b of at le st cat egory 1 of EN 9 4-1
5.5 Hazards due to overpres ure
The met erin an mix in u it s al b desig ed so t hat t he pres ure can ot ex ce d t he max imum pres ure
sp cified by the man fact urer This s al b ac ieved eit her:
By lmit ation of t he dr ive sy st em for pumps or
By one or more mec anical dev ices for ex ample a pr es ure relef v alv e or burst in dis Op nin of t he
device(s) s al not giv e rise t o emis ion to the en ironmen This may b ac iev ed for ex ample by t he
relef valv e b in v ent ed into a v es el t o cont ain an lq id rele sed
5.6 Hazards due to elevate temperatures of ma ual y operate mixing hea s
Man aly o erat ed mix in he d w here t he t emp rature of t he s race can ex ce d 5 °C s al b provided
w it h han les
The t emp rat ure of t he han les s al not ex ce d t he lmit s set by EN 5 3 These han les s al b so desig ed
t hat it is imp s ible for t he o erator t o tou h the mix in he d w hist holdin t hem
5.7 Hazards due to contact or inhalation
F r man al fi in of w orkin t an s, se clau e 7
Trang 10prod ct se clau e 7)
F r cont act d e to splas in , se clau e 7
5.8 Hazards due to incore t connec tion of hoses
Hoses an t heir con ect ion p int s s al b u ambig ou ly an p rmanent ly mark ed Se also clau e 7
5.9 Hazards due to ex plosion w here highly flamma le a ditives are use
Me s res are req ired to prev ent the buid up of con ent ration of hig ly flamma le ad it ives whic could
le d t o an ex plosion The met hod t o b ado ted to ac iev e t his de en on the ad it iv e an t he proces
u ed
The me s res s al take int o ac ou t a faiure of t he safety relat ed p rt s of t he cont rol s st em, t he d namic
se ls or t he energ s p ly
Se also clau e 7
5.10 Hazards due to ne le t of ergonomic principles
The force ne ded p r o er at or to manipulate the mix in he d s al not ex ce d the lmit values giv en in !EN
10 5" Se also clau e 7
5.1 Electric l hazards
Elect r ical eq ipment s al b in ac ordan e w ith EN 6 2 4-1
St op fu ct ion s al b at le st cat egor y 0 of 9.2.2 of EN 6 2 4-1:19 2
Emergen y st ops s al conform t o eit her cat egory 0 or 1 in ac ordan e w ith 9.2.5.4 of EN 6 2 4-1:19 2
Emergen y st op act uators s al b p sitioned in ac ordan e w it h 4.4.2 of EN 418:19 2
5.12 Hazards due to fai ure of the cont rol circ it
The cont rol s stem s al b desig ed in ac ordan e w it h cat egor y 1 of EN 9 4-1
The cont rol p nel s al b eq ip ed w it h a st art cont rol an a sto cont rol The st art cont rol s al req ire
reset t in aft er a p wer faiure Se also 5.4
6 Verificat ion of t he safet y requirement s and/or mea ures
V erification of t he safety r eq irement s an /or me s res s al b u dert aken as s own in ta le 1 b low
Trang 11Table 1 — Met hod of v rific tion
met hod of v erificat ion
s bclau e
v is al in p ction fu ct ional t est
)
me s rement calc lat ion
referen es
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
2)
5.10
5.1
5.12
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
EN 9 4-1
EN 5 3
se also cla se 7
se also cla se 7
se also cla se 7
se also cla se 7
EN 6 2 4-1;
EN 418
!EN 9 4-1"
1) Fu ct ional t est in in lu es v erification of t he fu ct ion an eficien y of g ar ds an safety devices on t he
b sis of
des ript ion given in the informat ion for u e
safety relat ed plan an cir cuit diagrams
t he req irement s giv en in clau e 5 of t his st an ard an in the ot her q oted st an ar ds
2) The met hod of v erification w il de en on the safety me s res select ed
7 Informat ion for use
Eac met erin an mix in u it s al b ac omp nied by informat ion fom t he man fact urer giv in gener al
in t ru t ion for u e (Se !6.5 of EN ISO 1210 -2:2 0 ")
The man fact urer s al in icat e:
The n mb r of o erat ors ne ded for man al o erat ion of t he mix in he d;
Position an sizes of b lt s ne ded t o sec re the in e en ent fix in s s p ort in the mix in he d;
The sp cificat ion for re lacement hose as embles;
The max imum t ime in u e aft er whic the hose as embles s al b re laced an , for mix in u it s
o eratin at pres ures a ov e 3 b r, t he max imum n mb r of c cles aft er w hic this s al b done;
That hose as embles s al b in p cted at le st on e ever y mont h an if t here is sig ificant wear t hey
s al b re laced immediat ely;