yps ped implementation

YPS-Langley ValvesYPS-Langley Valves

European Pressure European Pressure Equipment Directive Equipment Directive

97/23/EC97/23/EC(PED)(PED)ImplementationImplementation


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.


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).


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)


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.


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


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)


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.


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.


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.


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


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


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.


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….


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.


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


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.


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


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.

yps ped implementation

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