Upload
roman663
View
221
Download
0
Embed Size (px)
Citation preview
7/24/2019 Water Standards 2007
1/36
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
7/24/2019 Water Standards 2007
2/36
DSM Elastomers
ContentsContents
Introduction
Standards worldwide
Main changes in standards and consequences
Compounding Issues
7/24/2019 Water Standards 2007
3/36
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$oir linings
# Diaphragms& o#rings in heater appliances
# Washers and taps
# 'oses& tubes
# Seals in coupling ! fitting sstems
Rubber coming into contact with potable water has to meetRubber coming into contact with potable water has to meet
s
pecial sanitar regulations and mechanical standardsspecial sanitar regulations and mechanical standards
7/24/2019 Water Standards 2007
4/36
DSM Elastomers
E(amples of surfaces with bio#film depositE(amples of surfaces with bio#film deposit
Source" D)*WSource" D)*W
7/24/2019 Water Standards 2007
5/36
DSM Elastomers
Rubber +roductRubber +roduct
Seals"
Joint Rings for water supply drainage and sewerage pipe lines
!pplica"le to #oint seals for all pipeline materials$ 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.
7/24/2019 Water Standards 2007
6/36
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$sewerage and rain waterup to 5, -C.26 9'/ +waste.:6 Cellular Ru""er +waste.46 Cast 'olyurethane +waste.
;I 4010 +tter
' ,41 +ductile iron soc*et #oints.. ',47+ductile iron flange #oints.
KI=! ?R@ 203:A04
7/24/2019 Water Standards 2007
7/36
DSM Elastomers
Standards mechanical characteristicsStandards mechanical characteristics
,.S/-,.S/-
B /S0M F122 ,low head ! high head-,Elastomeric seals ! gas%ets for 3oining plastic pipes-
/S0M C114 ! 114M
,5oints for Circular Concrete Sewer and Cul$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
7/24/2019 Water Standards 2007
8/36
DSM Elastomers
Standards mechanical characteristicsStandards mechanical characteristics
,Main >thers-,Main >thers-
IS 41:: +International.
K 1:,: +Japan.
!S 3141 +!ustralia.
7/24/2019 Water Standards 2007
9/36
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#
7/24/2019 Water Standards 2007
10/36
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.
7/24/2019 Water Standards 2007
11/36
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
7/24/2019 Water Standards 2007
12/36
DSM Elastomers
>$er$iew Sanitar Requirements>$er$iew Sanitar Requirements
'gienic Microbial Chemical *enoto(icitEurope"
France
*erman
:etherlands L
.
/ustralia
5apan
.S/
7/24/2019 Water Standards 2007
13/36
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 $s9 Rest of World
7/24/2019 Water Standards 2007
14/36
DSM Elastomers
Microbial *rowth 0estsMicrobial *rowth 0ests
Characteristic MD>D W82; F+!++Mode batch basin batch
olume +l. 3 N300 061
+refreshed. +N22 @Ah6. +stagnant.
=ater tap tap SS&
'eriod +wee*s. 7 21 31
9emperature +-C. :0 !M?I/9 2,
+1 O3, -C.
'arameter 2 S@IM/ !9'Cost +/uro. N 400 N 00 N 3000
7/24/2019 Water Standards 2007
15/36
DSM Elastomers
Main Changes and De$elopments inMain Changes and De$elopments in
Standards ! RecommendationsStandards ! Recommendations
?S 1520+HK.
K9= A =270 +(ermany.
KI=! ?R@ 203:A04 D !9! +9he etherlands.
!CS +&rance.
/!S+/urope.
S& 13+HS!.
7/24/2019 Water Standards 2007
16/36
DSM Elastomers
Main changes and de$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
7/24/2019 Water Standards 2007
17/36
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$organisms test 2.% The e&traction of s#bstances that may concern to p#blic health 2.' The e&traction of metals 3.0 (igh temperat#re tests !.0 The G)/*S identification of water leachable organic s#bstances
Time span: 8-10 weeks ; Cost approx. 900-1000 material
7/24/2019 Water Standards 2007
18/36
DSM Elastomers
Re$ision S 6A8;Re$ision S 6A8;
=?S A =Rc =R!S
Reiew 'arts 3 to : +2003.
'art 3 % odour assessment re)introduced
'art 2 % M;; % optional 2 wee*s test etension for "orderline materials
'art : % optional "oiling water test
!ccredited @a"oratories +HK.%Law Laboratories, Birmingham
ITS, CranleighWQC, Reading
WRc-NSF, edmenham
Listing !ia WR"S Swindon
7/24/2019 Water Standards 2007
19/36
DSM Elastomers
Re$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 $ariation intest results due to lac% on reproducibilit
7/24/2019 Water Standards 2007
20/36
DSM Elastomers
S 6A8;S 6A8;
@isting 'rocedure
+,S
listing for %years
Current ;SM compounds listed%R200 R2005% R2030+till 2007.
7/24/2019 Water Standards 2007
21/36
DSM Elastomers
0W Recommendation +art 794974 ,A#78#7A
7/24/2019 Water Standards 2007
22/36
DSM Elastomers
0W"0W" Status and De$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=.
7/24/2019 Water Standards 2007
23/36
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
7/24/2019 Water Standards 2007
24/36
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-
7/24/2019 Water Standards 2007
25/36
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$)
C
7/24/2019 Water Standards 2007
26/36
DSM Elastomers
IW/ ConsequencesIW/ Consequences
:ew >/S will certainl lead to problems with current used SR and E+DM
compounds ,introduction F+ method according :E: 788=-
/CS ,F -
7/24/2019 Water Standards 2007
27/36
DSM Elastomers
/CS ,France-/CS ,France-
+ositi$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$)9esting time% 2): Month
/CS t h t i/CS t h t i
7/24/2019 Water Standards 2007
28/36
DSM Elastomers
/CS" current shortcomings/CS" current shortcomings
!pproals are ery costly
Current positie list is not compara"le with other lists used in /urope +K9=KI=!.
Screening and cytotoic tests not harmoni8ed with rest of /urope
!CS is "ased on the study of the chemical composition and migration testingof products6 &rance donGt determine the growth promoting properties of
construction materials
E/S D l tE/S D l t
7/24/2019 Water Standards 2007
29/36
DSM Elastomers
E/S @ De$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