water standards 2007

7/24/2019 Water Standards 2007

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DSM Elastomers

Rubber materials in contact with potable waterRubber materials in contact with potable water

Consequences of Current and Future Legislations

January 2007 Michael Koch


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DSM Elastomers

ContentsContents

Introduction

Standards worldwide

Main changes in standards and consequences

Compounding Issues


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DSM Elastomers

IntroductionIntroduction

Wh these regulations!standards"Mechanical# functional aspects

Sanitar# to a$oid ad$erse effects on water qualit

# to prohibit ris%s from consumers health

caused by:# discharge of undesirable substances

# release of metabolic b#products leading

to unpleasant tastes& odours and slime

# pathogenic bacteria

Rubber products in$ol$ed"

# Reser$oir linings

# Diaphragms& o#rings in heater appliances

# Washers and taps

# 'oses& tubes

# Seals in coupling ! fitting sstems

Rubber coming into contact with potable water has to meetRubber coming into contact with potable water has to meet

s

pecial sanitar regulations and mechanical standardsspecial sanitar regulations and mechanical standards


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DSM Elastomers

E(amples of surfaces with bio#film depositE(amples of surfaces with bio#film deposit

Source" D)*WSource" D)*W


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DSM Elastomers

Rubber +roductRubber +roduct

Seals"

Joint Rings for water supply drainage and sewerage pipe lines

!pplica"le to #oint seals for all pipeline materials$ including%

Iron$ Steel$ Clay$ &i"er Cement$ Concrete$ Reinforced Concrete$

'lastics and (lass)Reinforced 'lastics

&ocus on pipe seals in contact with cold)drin*ing water supplies +up to ,0 -C.


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DSM Elastomers

Main standards mechanical characteristicsMain standards mechanical characteristics

,Europe-,Europe-

/ 13 'art 3 till 4 +since 3551.36 ulcani8ed ru""er+application cold water up to ,0 -C hot water up to 330- C drainage$sewerage and rain waterup to 5, -C.26 9'/ +waste.:6 Cellular Ru""er +waste.46 Cast 'olyurethane +waste.

;I 4010 +tter

' ,41 +ductile iron soc*et #oints.. ',47+ductile iron flange #oints.

KI=! ?R@ 203:A04


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DSM Elastomers

Standards mechanical characteristicsStandards mechanical characteristics

,.S/-,.S/-

B /S0M F122 ,low head ! high head-,Elastomeric seals ! gas%ets for 3oining plastic pipes-

/S0M C114 ! 114M

,5oints for Circular Concrete Sewer and Cul$ert +ipe& using rubber gas%ets-

/S0M C 467 ! 467M

,Reinforced Concrete low head pressure pipe-

/WW/ C777!/87977,/I:SI standard for rubber gas%et 3oints for ductile iron pressure pipe and fittings-

.L 7;2

,.L standard for safet for asbestos#cement pipe and couplings-

.L 78


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DSM Elastomers

Standards mechanical characteristicsStandards mechanical characteristics

,Main >thers-,Main >thers-

IS 41:: +International.

K 1:,: +Japan.

!S 3141 +!ustralia.


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DSM Elastomers

Comparison Mechanical CharacteristicsComparison Mechanical Characteristics

+hsical +ropert Europe /ustralia 5apan .S/

'ardness IR'D0ensile strength Mpa

Elongation at brea%?

Compression set ?

28 h9 84 C

88 h9 2; C

28 h9 @7; C'ot air ageing

76< h 2; C

A6 h92; C

2; h97;; C

Stress Rela(ation

Water resistance

>Bone Resistance

>ptional tests

1;#A;Min9A

7;;#1;;

78#7=

8;

1;#6;

46#


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DSM Elastomers

Standards sanitar characteristicsStandards sanitar characteristics

?S 1520 K9= 36:63: A =270

KI=! ?R@ 203:A04 D !9!

!CS +!rrEtF G54 AG57.

/!S +under preparation.

!S4020 +!ustralia.

S& 13+HS!.

K 1:,: +Japan. IS 30223+International.


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DSM Elastomers

Sanitar test tpesSanitar test tpes

Micro"iological(rowth

ygienic

&laour and dour

Colour!ppearance

&oaming tendency

Chlorine demand

B Chemical Migration9otal rganic Car"on +9C.

Specific determinations

Identification of un*nowns

Cytotoicity

B (enotoicity


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DSM Elastomers

>$er$iew Sanitar Requirements>$er$iew Sanitar Requirements

'gienic Microbial Chemical *enoto(icitEurope"

France

*erman

:etherlands L

.

/ustralia

5apan

.S/


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DSM Elastomers

0est Europe /ustralia 5apan .S/

&laourAdour

ColourA9ur"idity

Metals @eachate

) metallic materials

) non)metallic materials

rganic @eachate

Micro"ial (rowth 'otential L

Chlorine ;emand

Sanitar RequirementsSanitar Requirements

Europe $s9 Rest of WorldEurope $s9 Rest of World


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DSM Elastomers

Microbial *rowth 0estsMicrobial *rowth 0ests

Characteristic MD>D W82; F+!++Mode batch basin batch

olume +l. 3 N300 061

+refreshed. +N22 @Ah6. +stagnant.

=ater tap tap SS&

'eriod +wee*s. 7 21 31

9emperature +-C. :0 !M?I/9 2,

+1 O3, -C.

'arameter 2 S@IM/ !9'Cost +/uro. N 400 N 00 N 3000


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DSM Elastomers

Main Changes and De$elopments inMain Changes and De$elopments in

Standards ! RecommendationsStandards ! Recommendations

?S 1520+HK.

K9= A =270 +(ermany.

KI=! ?R@ 203:A04 D !9! +9he etherlands.

!CS +&rance.

/!S+/urope.

S& 13+HS!.


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DSM Elastomers

Main changes and de$elopments in EuropeanMain changes and de$elopments in European

standards ! recommendationsstandards ! recommendations

!waiting the new to come /!S$ most /uropean countries areupdating their current national standards in preparation of the /!S

9o)days pro"lem is the postponement of the introduction of the

/!S$ which leads to further application of national standards


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DSM Elastomers

S 6A8;S 6A8;,non#metallic products in contact with drin%ing,non#metallic products in contact with drin%ing

water-water-

1.0 Specification 2.1 Samples for testing 2.2.1. General methods of test 2.2.2 Tastes imparted to water 2.2.3. Tastes imparted to water by hoses conveying food/drinks 2.3 ppearance of water 2.! Growth of a"#atic micro$organisms test 2.% The e&traction of s#bstances that may concern to p#blic health 2.' The e&traction of metals 3.0 (igh temperat#re tests !.0 The G)/*S identification of water leachable organic s#bstances

Time span: 8-10 weeks ; Cost approx. 900-1000 material


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DSM Elastomers

Re$ision S 6A8;Re$ision S 6A8;

=?S A =Rc =R!S

Reiew 'arts 3 to : +2003.

'art 3 % odour assessment re)introduced

'art 2 % M;; % optional 2 wee*s test etension for "orderline materials

'art : % optional "oiling water test

!ccredited @a"oratories +HK.%Law Laboratories, Birmingham

ITS, CranleighWQC, Reading

WRc-NSF, edmenham

Listing !ia WR"S Swindon


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DSM Elastomers

Re$ised standard S 6A8;" ConsequencesRe$ised standard S 6A8;" Consequences

:ew # and re#audit compounds often fail on new introduced

odour!fla$our test

) MD>D test will be maintained for the time being& means $ariation intest results due to lac% on reproducibilit


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DSM Elastomers

S 6A8;S 6A8;

@isting 'rocedure

+,S

listing for %years

Current ;SM compounds listed%R200 R2005% R2030+till 2007.


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DSM Elastomers

0W Recommendation +art 794974 ,A#78#7A


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DSM Elastomers

0W"0W" Status and De$elopmentsStatus and De$elopments

0ime schedule 8;;2 for the preparation of the new Leitlinie *ummiG'roposal H?!A=dK

;isclosing of recipes

ew positie @ist will "e "ased on Synoptic documents 0 till 4 and the positie lists of ?fR and /uropean standard+/&S!. 2002A72/(Reised =270 test will "e proposed as new /uropean standard for micro"ial growth determination instead of ?&' test

3: Mem"ers+=dK (roup L9rin*wasser. will ta*e part on Round Ro"in test Current =270 test ersus reised one

9oicological ealuation of ru""er ulcanisate ia (CAMS screening3: Mem"ers will ta*e part on Round Ro"in test +according C/ 9C 314 wg: ahg7.

0est Institutes9P= Karlruhe ygienic Institute (elsen*irchen ?!M ?erlin +only K9=.


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DSM Elastomers

Comparison W82; ,7AAA- $ersus re$ised W82;Comparison W82; ,7AAA- $ersus re$ised W82;

Shortcomings current =270 9est% 9esting time of 1 Month ;etermination of slime quantity with a limiting alue of 063 mlA00 cm2

Changes% ;uration of 9est @imiting alue

;etermination of quantity of surface deposit +ia centrifugation method. 9est)scheme +measurements after 4$ $32 and 31 wee*s.

Requirements on deposit ,bacterial growth-

Reised Current @arge contact areas +hoses$ liners.% Q060, D 0602 0607 Q 063 mlA00 cm2

;3 Seals% Q 0632D060: 063, Q 06: mlA00 cm2

;2 Seals% Q0620 D 060: 062: Q 06, mlA00 cm2


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DSM Elastomers

0W Consequences0W Consequences

Introduction of new positi$e list could influence current used polmers,monomers- and compounding ingredients

Introduction of re$ised standard W82; will lead to more constantmicrobial growth figures

:ew classification of categories limits application of current used

compounds& e9g9 E+DM and IIR based hoses ,categor C H/-

'oses are tested according /rbeitsblatt W=14,December 8;;1- which in$ol$es functional

tests& W82; and 0W 794974 ,odour and taste-


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DSM Elastomers

IW/ RL 8;74!;1 J /0/IW/ RL 8;74!;1 J /0/

In 2000 reised standard ?R@ 203:A04 has "een introduced) nearly equialent to / 1363+eception tear) and o8one test.

!9! list$ issued 03) 3554$ still alid

Introduction of micro"ial growth test under consideration

) KI=! ?io)film &ormation 'otential +d Kooy.

Introduction !S

!pproal Cost +including !9!A ?&' tests. a"out /uro 2000):000$)

C


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DSM Elastomers

IW/ ConsequencesIW/ Consequences

:ew >/S will certainl lead to problems with current used SR and E+DM

compounds ,introduction F+ method according :E: 788=-

/CS ,F -


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DSM Elastomers

/CS ,France-/CS ,France-

+ositi$e list /rrKtG ,:o$ember 7AA1- still $alid+m% ma6 residuals in material A @MS limits spec6 migration A Categories depending on application and SA ratio.

0est methods /rrKtG ,5une 7AA2- "3. Measurement organoleptic and physical)chemical parameters +quic* screening according T' ' 43)2,0)3.2. Measurement organic and mineral miropollutants +end screening according T')'43)2,0)2.:. Measurement cytotoicity +according T' '43)2,0)3.

0est Institutes"IR +e @SR'.$ andoeure CedeInstitut 'asteur Serice des /au$ @illeCR/C/'$ 'arisCarso$ @yon

Cost"Cost total approal% a"out /uro 5000$)9esting time% 2): Month

/CS t h t i/CS t h t i


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DSM Elastomers

/CS" current shortcomings/CS" current shortcomings

!pproals are ery costly

Current positie list is not compara"le with other lists used in /urope +K9=KI=!.

Screening and cytotoic tests not harmoni8ed with rest of /urope

!CS is "ased on the study of the chemical composition and migration testingof products6 &rance donGt determine the growth promoting properties of

construction materials

E/S D l tE/S D l t


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DSM Elastomers

E/S @ De$elopmentsE/S @ De$elopments

&irst initiatie +355. /!S feasi"ility study +HK$ &$ ($ @. ) +3555.

/!S Uon paperG% report to R()C';= +&e" 03.

Research +4 topics. starting +2003.

) organoleptic properties +odour$ flaour$ tur"idity.) hygienic properties +9C$ Cl demand.

) enhancement of micro"ial growth

) affect of chlorine leel

&inal /!S in 2030

water standards 2007

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