Systems - ATEX

7/21/2019 Systems - ATEX

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ATEX DirectiveATEX Directiveapplied to auxiliaryapplied to auxiliary

sealant systemssealant systems

Fabrizio Ghilardi

John Crane Italia SpA

ATEX 94/9/EC Directive



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ATEX 94/9/EC Directive

Seal systems Seal Systems

they are not classed as a ‘component’ unless the system

contains an independent pump

they need certification for electrical instrumentation linked to the seal arrangement



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ATEX 94/9/EC Seal Systems

In case o! seal auxiliary systems" the per!ormance o! some o! themis directly related to the desi#n and operation o! the seals theylu$ricate%

John Crane and its &oti!ied 'ody" T()" have a#reed that the sealand system must $e com$ined in the ATEX Declaration o!Con!ormity and supplied as a com$ination%

It*s our +ud#ement that auxiliary systems ,ill not $e used in a -one .or . environment and hence our ATEX 0uali!ication has $een $asedon 1roup II" cate#ories and 2 31as and Dust%

5or those systems and seals ,e !eel !it the criteria !or de!inition asan ATEX cate#ory and 2 component ,e have su$mitted Technical5iles to T() !or stora#e and have produced the Declarations o!Con!ormity%



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ATEX 94/9/EC Seal systemsTo meet our o$li#ations under ATEX 94/9/EC*s Essential 6ealth and Sa!ety

7e0uirements" ,hen re0uested !or seal and system to ATEX cate#ory or 2 ,e,ill provide the !ollo,in#8 • Declaration o! Con!ormity !or the auxiliary system• Instruction anual speci!ic to the :lan that meets our ATEX commitments• Declaration o! Con!ormity !or the seals" speci!ic to the seal con!i#uration%• Seal Instruction anual $ased on latest en#ineered cartrid#e seal Template" orStandard Seal• Instruction anual to#ether ,ith Seal I Addendum !or ATEX% ;hen auxiliary systems are com$ined ,ith a seal arran#ement the maximum sur!acetemperature o! the com$ination is determined $y the seal assem$ly% ;e thus state in our

Declaration o! Con!ormity and our System Instruction anuals that the user must consultthe seal Instruction anual !or the detail o! the aximum Sur!ace Temperature 3ST%



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ATEX 94/9/EC Seal systems

:lan 2There are no movin# parts that may constitute an i#nition ris<% ATEX certi!ication !or the heatexchan#er is thus unnecessary $ut i! re0uested ,e should provide a Declaration o!Con!ormity as is applica$le to the seal arran#ement% :lan 2=There are no movin# parts that may constitute an i#nition ris<% ATEX certi!ication !or the

cyclone is thus unnecessary $ut i! re0uested ,e should provide a Declaration o! Con!ormityas is applica$le to the seal arran#ement% :lan >A Declaration o! Con!ormity is availa$le !or our ran#e o! ,et" dual unpressurised seals 3C;?C;% The desi#n settlement temperature !or the $u!!er li0uid should $e @.oC%A:I @ 3nd Edition and ISB =.49 maximum inlet/outlet di!!erential temperatures are recommended%

The :ressure E0uipment Directive 39/2/EC ,ill class the reservoir $y the most ha-ardous!luid 3process or $u!!er8 this is li<ely to $e the process in most services%A lo,?level ,arnin# alarm is re0uired in the reservoir%Toppin#?up o! $u!!er li0uid must $e done usin# a source that doesn*t permit entry o! air intothe reservoir%

5or all systems all electrical ,arnin# s,itches and indicators ,e mi#ht supply as part o! the

system should have their o,n speci!ic Declarations o! Con!ormity and are supplied to therelevant E& Standard% In the case o! IS s,itches E& ..49 :art =4 permits an ATEX opt?out



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ATEX 94/9/EC Seal systems:lan >2A / ' / CThe ha-ard analysis su$mitted to T() !or stora#e indicated the system ,ould havethe !ollo,in# speci!ications8•The desi#n settlement temperature !or the $u!!er li0uid should $e @.oC%•Systems relyin# solely on thermo?syphonic !lo, inducement are not permitted onpumps or compressors% A:I @ 3nd Edition and ISB =.49 maximum inlet/outletdi!!erential temperatures are recommended%

•The :ressure E0uipment Directive 39/2/EC ,ill class the reservoir $y the ha-ardratin# o! the $arrier li0uid%•A pressure relie! valve is !itted i! the ratin# o! the e0uipment exceeds the reservoir%•A lo,?pressure alarm should $e !itted%•A lo, level alarm should $e !itted 3A/C•A pressure relie! valve is re0uired3C•All details o! interconnectin# pipe ,or<" suita$le $arrier li0uid properties" !unction

etc etc is detailed in our Instruction anual !or this pipin# plan%•Toppin#?up o! $arrier li0uid must $e done usin# a source that doesn*t permit entryo! air into the reservoir% 5or all systems all electrical ,arnin# s,itches and indicators ,e mi#ht supply aspart o! the system should have their o,n speci!ic Declarations o! Con!ormity and are

supplied to the relevant E& Standard% In the case o! IS s,itches E& ..49 :art =4permits an ATEX opt?out



ATEX 94/9/EC Seal systems:lan >4

These are supplied in such a ,ide com$ination o! desi#ns that #eneric descriptionsand ha-ard analyses are too di!!icult% Bur strate#y is to provide an ATEX 1roup / 2Declaration $ut the creation o! the Technical 5ile and its su$mission ,ill $e donespeci!ic to the order% This ,ill re!lect on price and delivery% &ormally :lan >4 is notsupplied $y John Crane :lan This $u!!er #as !lush system" used ,ith :lans > and " ,e do not consider !its thecriteria as an ATEX 94/9/EC Component% It is constant?loss !lo, and pressurecontrollin# system" ,ithout any movin# parts" ,hose supply source and temperatureis not controlled $y the seal or system% :lan 4

This $arrier #as supply system should $e treated in the same manner as :lan % :lan > and There is no clear product mar<eted no Technical 5ile% 5or all systems all electrical ,arnin# s,itches and indicators ,e mi#ht supply as parto! the system should have their o,n speci!ic Declarations o! Con!ormity and aresupplied to the relevant E& Standard% In the case o! IS s,itches E& ..49 :art =4permits an ATEX opt?out



Conclusions

ATEX certi!ication al,ays re!ers toechanical seal sealant system as uni0uesystem

Sealant system desi#n should re!lect the!eatures" re0uested $y technical !ilesu$mitted to T)



Fuestions G

Than<s !or yourtime andattention

ATEX 94/9/EC Seal systems

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