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Conflicting national standards must Conflicting national standards must be withdrawnbe withdrawn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