Download - YPS PED Implementation
YPS-Langley ValvesYPS-Langley Valves
European Pressure European Pressure Equipment Directive Equipment Directive
97/23/EC97/23/EC(PED)(PED)ImplementationImplementation
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BRIEF GUIDE TO PEDBRIEF GUIDE TO PEDWho is responsible for meeting its requirements?The manufacturer of the equipment.(Note that compliance with ‘harmonised’ CEN standards gives presumption of conformity).
Who is responsible for assessing conformity?(1) ‘Notified Bodies’or NOBOs (Inspection bodies of manufacturers and purchasers approved by national governments and employed by the equipment manufacturer at his expense).(2) ‘User Inspectorates’ who may undertake the inspection activities of the Notified Body in certain circumstances (approved governments and employed by the purchaser for his own procurement only).
How do we know equipment conforms?Most equipment will carry a CE mark affixed by the manufacturer and be accompanied by an ‘EC declaration of conformity’; where appropriate a ‘certificate of conformity’ will be issued by the Notified Body.
When did it become effective?Voluntary from 29th November 1999, mandatory from 29th May 2002.
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PED ScopePED Scope• Classification, choose hazard category for product• Essential safety requirements in Annex 1 are:-
– Design– Materials– Manufacturing e.g., casting, welding, N.D.E.– Marking and labelling– Testing– Operating Instructions
• Approval routes, with NOBO (Lloyds, TUV etc).
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YPS Langley Initial ConditionsYPS Langley Initial Conditions• Low volumes manufactured and modified for Projects and
MRO, with a wide range of designs.• ISO 9001 system.(design-make-test)• NB 0.5”-30” Gate, Globe Check valves• ASME Class150-2500• Bolted and welded products.• ASTM Castings, tubing, forgings and plate. • 3.1B body shell (traceable),
2.2 Bolting & Trim (conformity)
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Which Hazard Category?Which Hazard Category?
• Preference to produce valves for all applications using nearly identical requirements.
• Full service conditions for valves is not normally known.• YPS-Langley decision is to qualify valves to highest
appropriate category.
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Category Selection Using Group 1 GasesCategory Selection Using Group 1 Gases
0
50
100
150
200
250
300
350
400
0 10 20 30 40 50 60 70 80 90 100 110 120 130Design Pressure(Bar g)
Nom
inal
Pip
e Si
ze
Cat I Cat II Cat III
Category III
Category ICategory II
SOUND ENGINEERING PRACTICE - CE MARKING NOT PERMITTED ART 3.3
Cat I or II + unstable gases = Cat III
150# 800-4500#600#300#
2”
4”
6”
8”
10”
12”
14”
16”
1”25
•See following table for definition of Group 1 gases and other fluids
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CLASSIFICATION OF FLUIDSCLASSIFICATION OF FLUIDSGASES
GROUP ONE• EXPLOSIVE• EXTREMELY FLAMMABLE• HIGHLY FLAMMABLE• VERY TOXIC• TOXIC• OXIDISINGGROUP TWO• OTHERS
LIQUIDS• GROUP ONE• EXPLOSIVE• EXTREMELY FLAMMABLE• HIGHLY FLAMMABLE• VERY TOXIC• TOXIC• OXIDISINGGROUP TWO• OTHERS (INCLUDING STEAM)
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Product Category SummaryProduct Category Summary
• 0.5”-1”(DN15-25) sound engineering practice (S.E.P) CE marking is not allowed for this size range.
• 1.1/4”-30”(DN32-800) Category III, CE marked.
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Qualification RouteQualification Route
• Approval route, depends on hazard category and manufacturing environment.
• NOBO for approval process.• For ISO 9001 companies the simplest route for Category
III compliance is the module H audit route.
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Assessment Module DefinitionAssessment Module DefinitionKEY TO THE REQUIREMENTS OF CONFORMITY ASSESSMENT MODULES
MODULE DESIGN PRODUCTION
A Technical documentation Internal production control.A1 Technical documentation Internal production control with
monitoring of the final assessment.B Type examinationB1 Design examinationC1 Monitoring of final assessment.D Quality assurance for production,
final inspection and test.D1 Technical documentation Quality assurance for production,
final inspection and test.E Quality assurance for final inspection
and test.E1 Technical documentation Quality assurance for final inspection
and test.F Product verification.G Unit verification Unit verification.H Quality assurance for design, manufacture, final inspection and test
H1 Quality assurance for design, manufacture, final inspection and testwith design examination and monitoring of final assessment.
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Assessment Modules Necessary by Assessment Modules Necessary by Safety CategorySafety Category
Conformity assessment modules are the means by which the manufacturer demonstrates compliance with the requirements of the Directive, and they effectively determine the level of quality assurance applied.
SUMMARY OF THE CONFORMITY ASSESSMENT MODULES
CATEGORY I CATEGORY II CATEGORY III CATEGORY IV
MODULE MODULES MODULES MODULESA A1 B1 + D B + D
D1 B1 + F B + FE1 B + E G
B + C1 H1H
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Cat. III Valve CertificationCat. III Valve Certification
• Body-shell: (body, bonnet, pipe stubs, connectors, bypasses): – Traceable, material test report EN 10204 - 3.1B
• Trim: (seats, obturator - disc/wedge/ball/plug): – Non Traceable, material conformity.
• Bolting: – Batch traceability, material test report EN 10204 - 3.1B
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MaterialsMaterials• The PED gives manufacturers three routes. They can
either :-– use materials, which comply with Harmonized standards – use materials covered by a European approval of pressure
equipment materials in accordance with Article 11– carry out a particular material appraisal.
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MaterialsMaterials– Euro materials have 27J charpy impact test values at min.
design temp. (max 20C), and min 14% elongation.– Min temp. must allow for upset conditions such as
depressurisation. – ASTM bodyshell and trim materials listed in EN 1503-2-2000
(EAM).• Covers most common ASTM piping materials:
A105, A106, A182, A216, A217, A312, A335, A350, A351, A352……A479, A515, A516……A696……A739….
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WeldingWelding
• NOBO for approval of WPS, PQR, to EN288, PQR includes charpy impact test 27J at min design temp <20C equal to parent material.
• Design joint efficiencies depending on extent of NDE– 0.7 for visual– 0.85 for random appropriate NDE– 1.0 for 100% appropriate NDE
• Heat treatment to maintain physical properties.
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InstructionsInstructions
• Installation precautions.• Maintenance, lubrication, seal replacement /adjustment• Advice of potential hazards• Explanation of valve markings• Language - English for UK, should be in language of
country
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Phasing in Phasing OutPhasing in Phasing Out• 0.5”-1”(DN15-25) nothing changed.• 1.1/2” and larger (DN40 +) changes included:
– CE Nameplate:Min & Max Pressure/Temperature Ratings, Materials, DN, Design Standard, Valve Type, Serial No.
– CE Certificate Statement of Compliance– Batch traceable bolting
• Material at end user before May 2002 is exempt from requirements.
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PED Checklist PED Checklist • NOBO selected was LRQA• Audit route selected module H• CE marking commenced first half 2001.• Initial audit completed.• Latest audit complete 2005.Issues for interpretation:• Stem material certification
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FURTHER READINGFURTHER READINGValve Purchaser’s Guide to the European Pressure Equipment Directive
EEMUA Publication No. 196:1999
Guidance Notes on the EC Pressure Equipment Directive (97/23/EC)DTI December 1997
The Pressure Equipment RegulationsS.I. 1999 No. 2001
Guidelines on the Interpretation of the Pressure Equipment DirectiveB.V.A.M.A.