PED Workshop, Bratislava April 2005 PED and Presumption of Conformity Product Standards for pressure...
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Transcript of PED Workshop, Bratislava April 2005 PED and Presumption of Conformity Product Standards for pressure...
PED Workshop, Bratislava PED Workshop, Bratislava April 2005April 2005
PED and Presumption of Conformity PED and Presumption of Conformity Product Standards for pressure vessels, Product Standards for pressure vessels, boilers and piping, and “Horizontal” boilers and piping, and “Horizontal” standards including valves and standards including valves and materialsmaterials
Ed HaynesEd Haynes
CEN ConsultantCEN Consultant
Pressure EquipmentPressure Equipment
Scope and Content Scope and Content
Introduction and links of PED to standardsIntroduction and links of PED to standards Achievements and developmentsAchievements and developments Some standards and Technical CommitteesSome standards and Technical Committees More about links of PED to standardsMore about links of PED to standards 3 questions … 3 questions … answersanswers?? Useful websites then tables of standards Useful websites then tables of standards
by TCby TC
Questions welcome any timeQuestions welcome any time
Overview: Standardisation Overview: Standardisation under New Approachunder New Approach
MandateMandate TC drafts standardTC drafts standard [I may assist][I may assist] Public enquiryPublic enquiry [I must comment][I must comment] TC considers comments TC considers comments [I must approve][I must approve] National Standards Bodies (NSBs) voteNational Standards Bodies (NSBs) vote CEN / CENELEC / ETSI ratify, advise ECCEN / CENELEC / ETSI ratify, advise EC NSBs transpose and publishNSBs transpose and publish EC publishes references in OJEU.EC publishes references in OJEU.
Guide to implementation of Guide to implementation of New Approach DirectivesNew Approach Directives
According to the “Blue” Guide, According to the “Blue” Guide, Directive 98/34 states:Directive 98/34 states:
Compliance with CEN or CENELEC Compliance with CEN or CENELEC standards is not compulsorystandards is not compulsory
Conflicting national standards must Conflicting national standards must be withdrawnbe withdrawn
PED Recital 16PED Recital 16
“WHEREAS …to ease the task of
demonstrating compliance with ESRs,
standards harmonised at European level
are useful…”
CEN, CENELEC
are recognised as competent to adopt harmonised standards that follow general guidelines…”
AchievementsAchievements
Pressure Vessels EN 13445 series Pressure Vessels EN 13445 series Boilers EN 12952 and 12953 seriesBoilers EN 12952 and 12953 series Industrial piping EN 13480 seriesIndustrial piping EN 13480 series
Help desks for these product Help desks for these product standardsstandards
Materials standardsMaterials standards
DevelopmentsDevelopments
GRP tanks and vesselsGRP tanks and vessels aluminium pressure vesselsaluminium pressure vessels aluminium, copper and cast iron aluminium, copper and cast iron
materialsmaterials equipment for fuels (LPG) equipment for fuels (LPG) cryogenics, refrigeration systemscryogenics, refrigeration systems assembliesassemblies
Pressure Equipment Pressure Equipment DirectiveDirective
Article 5 (2)Article 5 (2)
““Pressure equipment and assemblies Pressure equipment and assemblies which conform to the national which conform to the national standards transposing the standards transposing the harmonised standards published in harmonised standards published in the OJ shall be presumed to conform the OJ shall be presumed to conform to the essential requirements…”to the essential requirements…”
DifferentiatorsDifferentiators
Presumption of Conformity is one Presumption of Conformity is one major major differentiatordifferentiator from use of European from use of European standardsstandards
Others includeOthers include Latest technical experienceLatest technical experience Breadth of background (Breadth of background (EU ExpansionEU Expansion)) Close partnership of material and Close partnership of material and
design codesdesign codes
Standards-makingStandards-making
Standards elaborating the PED Essential Standards elaborating the PED Essential Safety Requirements are:Safety Requirements are:
Precise using known and respected dataPrecise using known and respected data Allow flexibility but avoid compromise Allow flexibility but avoid compromise
through stating generalities through stating generalities Add valueAdd value Acceptable to the MandateAcceptable to the MandateThese standards are These standards are mademade for the for the
Directive Directive
Foreword in standardsForeword in standards
Standards which are candidates for Standards which are candidates for citation in the Official Journal state: citation in the Official Journal state:
““For relationship with EU Directive(s), For relationship with EU Directive(s), see informative Annex Z, which is an see informative Annex Z, which is an integral part of this document”integral part of this document”
PED Annex Z PED Annex Z
““Once this standard is cited in the OJ under Once this standard is cited in the OJ under [the] Directive and [it] has been [the] Directive and [it] has been implemented as a national standard in at implemented as a national standard in at least one Member State, compliance with least one Member State, compliance with the clauses of this standard given in Table the clauses of this standard given in Table ZA.1 confers, within the limits of the scope ZA.1 confers, within the limits of the scope of this standard, a presumption of of this standard, a presumption of conformity with the corresponding Essential conformity with the corresponding Essential Requirements [of the] Directive and Requirements [of the] Directive and associated EFTA regulations.” associated EFTA regulations.”
Shell boilers EN 12953-3 Table Shell boilers EN 12953-3 Table ZA.1ZA.1(extract)(extract) Design & calculation for Design & calculation for
pressure partspressure partsEN 12953-3 EN 12953-3 clauseclause
ContentContent PED Annex IPED Annex I
5.1 to 5.75.1 to 5.7 Design generalDesign general 2.12.1
5.65.6 Hydrostatic test Hydrostatic test pressurepressure
7.47.4
5.75.7 WearWear 2.72.7
6.16.1 Operating Operating tempstemps
2.2.12.2.1
6.26.2 Allowable Allowable stressesstresses
7.1.27.1.2(etc(etc
Valves prEN 12516-1 Valves prEN 12516-1 Table ZA.1 Table ZA.1 (extract)(extract)
Shell design strength – tabulation Shell design strength – tabulation methodmethodprEN prEN
12516-1 12516-1 clauseclause
ESR titleESR title ESR ESR numbernumber
RemarksRemarks
1212 MarkingMarking 3.33.3 See also See also EN 19EN 19
55 MaterialsMaterials 4.1 4.1 aa RestrictioRestriction agreedn agreed
66 MaterialsMaterials 4.2 a4.2 a
10.610.6 Joint Joint coefficientcoefficientss
7.27.2(etc(etc
GuidelinesGuidelines
Guidelines are not legally binding, but are Guidelines are not legally binding, but are regarded very highly in most Member States regarded very highly in most Member States
Kept active when drafting standardsKept active when drafting standards Examples Examples 9/20 Generic statement rejecting imposed 9/20 Generic statement rejecting imposed
national requirements affecting design etc.national requirements affecting design etc. 8/15 specific requirements to be included at 8/15 specific requirements to be included at
design stage, drawn from national rules design stage, drawn from national rules regarding operation in some member statesregarding operation in some member states
Question 1Question 1
Can we use standards other than EN in Can we use standards other than EN in pressure equipment?pressure equipment?
AnswerAnswer
YES as long as the manufacturer meets the YES as long as the manufacturer meets the essential safety requirements in the PED.essential safety requirements in the PED.
[[Commercial considerations may apply ie. Commercial considerations may apply ie. the overall cost may be greaterthe overall cost may be greater]]
Question 2Question 2
How do I know that AD 2000, CODAP, How do I know that AD 2000, CODAP, PD5500, ASME or other non-EN standard PD5500, ASME or other non-EN standard meets the Essential Safety Requirements?meets the Essential Safety Requirements?
AnswerAnswerYou do not know, unless the manufacturer:You do not know, unless the manufacturer: reviews his arrangements for complying reviews his arrangements for complying
with ESRs andwith ESRs and the Notified Body accepts this, where it is the Notified Body accepts this, where it is
involved in Conformity Assessment.involved in Conformity Assessment.
Question 3Question 3
Does this mean that the manufacturer Does this mean that the manufacturer takes on additional responsibility by takes on additional responsibility by not using EN? not using EN?
AnswerAnswer
YES – other standards do not confer YES – other standards do not confer Presumption of Conformity with the Presumption of Conformity with the ESRs. ESRs.
Useful websitesUseful websites
http://http://ped.eurodyn.comped.eurodyn.com- Text of Directive, Guidelines and links Text of Directive, Guidelines and links
to standards, notified bodies, JRC, etcto standards, notified bodies, JRC, etc
www.eotc.be/newapproachwww.eotc.be/newapproach “Blue” “Blue” GuideGuide
http://www.newapproach.org/Directives/Defaulthttp://www.newapproach.org/Directives/Default.asp.asp
Directives and related standards Directives and related standards
Useful CEN addressesUseful CEN addresses
www.cenorm.bewww.cenorm.bePE Standards Work ProgrammePE Standards Work Programme
http://www.cenorm.be/cenorm/businessdomhttp://www.cenorm.be/cenorm/businessdomains/businessdomains/mechanicalengineerinains/businessdomains/mechanicalengineering/pressure/workprogramme.aspg/pressure/workprogramme.asp
Materials Work ProgrammeMaterials Work Programme
http://www.cenorm.be/cenorm/businessdomhttp://www.cenorm.be/cenorm/businessdomains/businessdomains/materials/workprograains/businessdomains/materials/workprogramme.aspmme.asp
ECISS Work ProgrammeECISS Work Programme
http://www.cenorm.be/cenorm/aboutushttp://www.cenorm.be/cenorm/aboutus/structure+/relations/workprogrammee/structure+/relations/workprogrammeeciss.aspciss.asp
Materials issues: Materials issues: EN/ASME/ASTMEN/ASME/ASTM
PED Annex I clause 4.1 (a) emphasises ductility PED Annex I clause 4.1 (a) emphasises ductility and toughness, quantified in clause 7.5.and toughness, quantified in clause 7.5.
European materials have guaranteed European materials have guaranteed properties of strength [room (and elevated) properties of strength [room (and elevated) temperature], ductility and toughness temperature], ductility and toughness (transverse direction).(transverse direction).
American materials standards do not always American materials standards do not always state these properties and they are not state these properties and they are not guaranteed. Levels of C, S (and P) are not guaranteed. Levels of C, S (and P) are not consistent with good impact properties consistent with good impact properties expected in Europe.expected in Europe.
Cautionary preface on some Cautionary preface on some materials standards cited in OJ materials standards cited in OJ
((Guideline 7/1)Guideline 7/1)For the following harmonised supporting For the following harmonised supporting
standard for materials, presumption of standard for materials, presumption of conformity to the ESRs is limited to technical conformity to the ESRs is limited to technical data of materials in the standard and does data of materials in the standard and does not presume adequacy of the material to a not presume adequacy of the material to a specific equipment. Consequently the specific equipment. Consequently the technical data stated in the material standard technical data stated in the material standard should be assessed against the design should be assessed against the design requirements of the specific equipment to requirements of the specific equipment to verify that the ESRs of the PED are satisfied.verify that the ESRs of the PED are satisfied.
Continue on Tables 1 - 18Continue on Tables 1 - 18
Notes Notes Data in the tables should be checked Data in the tables should be checked with published sources or the with published sources or the relevant TC or NSB. relevant TC or NSB.
It has been condensed for ease of It has been condensed for ease of presentation and is subject to update. presentation and is subject to update.
(*) denotes prEN(*) denotes prEN