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Feedback from assessments of ExCBs and ExTLs – Areas where difficulties are experienced

Feedback from assessments of ExCBs and ExTLs – Areas where difficulties are experienced. Jim Munro Chairman IECEx Panel of Assessors. Scope of presentation. This training session will: Look at some common problems and how to overcome or avoid them

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Feedback from assessments of ExCBs and ExTLs – Areas where difficulties are experienced

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  1. Feedback from assessments of ExCBs and ExTLs – Areas where difficulties are experienced Jim Munro Chairman IECEx Panel of Assessors

  2. Scope of presentation • This training session will: • Look at some common problems and how to overcome or avoid them • Discuss IECEx and other documents ExCBs and ExTLs need to consider • Discuss some of the approaches that can be used to help bodies be accepted

  3. Problems?

  4. Types of issues/problems • Applying IECEx Procedures • System issues related to ISO/IEC Guide 65 and 17025 • Technical issues • Other Issues

  5. Applying IECEx Procedures - ExCB • IECEx 02 IECEx Scheme rules of procedure • OD/003 IECEx Assessment procedures • OD/005 Quality System requirements for manufacturers • OD/009 Issuing of CoCs, ExTRs and QARs • ExMC/161/CD Management of assessment and surveillance programs for manufacturers • OD/017 Drawing and documentation guidance • Other ODs

  6. Applying IECEx Procedures –ExTL • IECEx 02 IECEx Scheme rules of procedure • OD/003 IECEx Assessment procedures • IECEx Operational Document OD/009 Issuing of CoCs, ExTRs and QARs • Other ODs • IECEx Technical Guidance Documents (TGDs) • ExTAG Decision Sheets

  7. Applying IECEx Procedures - • Use of data, subcontracting and off site testing • New OD024V1 Use of ‘Other Testing Laboratories’ • A Manufacturer Testing Laboratory • An End-User Testing Laboratory • For third party laboratories - hierarchy: • IECEx • IECEE • Local accreditation • No accreditation • Assessment and Control

  8. Applying IECEx Procedures - • Appeals – to IECEx • Manufacturing surveillance • Adjustment where local system is different (not a Type 5 Scheme) • Ensuring QARs are issued • ExTRs • Blanks in completed ExTRs • Lack of supporting data • Referencing to ATEX component certificates – see Decision Sheets 2004/006 and 2006/002

  9. Applying IECEx Procedures - • Clear delineation of responsibilities of people within ExCB and ExTL, including: • Who makes certification decision • Who signs what • Deputies where necessary

  10. Guide 65 and 17025 • Using uncontrolled pieces of paper: • For recording results • For useful data such as conversion lookup tables • Capturing and retaining original data • Internal audits - Not always done to schedule • Calibration • Instruments not in calibration • Extending calibration periods

  11. Technical Issues • Technical issues related to: • Equipment • Procedures • Competency

  12. Technical Issues –IP Testing • Dust testing – keeping dust in circulation • Humidity - heating • Vibrators – rappers – hoses • Slope of hoppers • Viewing windows • Water testing – • Temperature differential - control temperature or use of pressure balance • Nozzle calibration

  13. Technical Issues –Intrinsic Safety • Intrinsic safety assessment • Lack of guidance material • OD021V2 • Spark test apparatus • Inductors and capacitors • Temperature classification • Measurement • Assessment • Small component ignition

  14. Technical Issues – Flameprooof • Flameproof pressure determination systems • Understanding • Calibration approaches • Gas measurement

  15. Technical Issues – Temperature Measurement • Lack of attention to measurement techniques • Thermocouple and system calibration • Thermocouple attachment • Hot spot location

  16. General issues • Use of latest 17025 – 1 June 2007 • Unusual test equipment • Accreditation • Use of pre-assessments

  17. Conclusion • Despite the seeming long list of issues here – everyone seems to get there in the end!

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