ISO/TC 30 Standards. Dr Michael Reader-Harris, NEL and Dr David Michael International Secretariats, BSI

Transcription

1 Dr Michael Reader-Harris, NEL and Dr David Michael International Secretariats, BSI Slide 1

2 Benefits of standards Contributed to about 13 per cent of the growth in labour productivity in the UK over , and contribute 2.5 billion annually to the UK economy. Reduce barriers to trade. Improve the operation of markets through the smooth flow of goods and services. Enable compliance to be demonstrated. Provide confidence in product performance. Enable technology to be transferred from one sector to another. Can have environmental as well as economic advantages. Slide 2

3 ISO Standards Produced by Technical Committees (TCs) and their Subcommittees (SCs) Voting members are national bodies (e.g. BSI, DIN) Drafted by Working Groups (WGs) Members are individual experts WD National Standards Body (e.g. BSI) DIS CD New Work Item Proposal (needs 5 countries nominating experts) Working Group (produces working drafts) Committee Draft (CD) FDIS SC (or TC) produces Draft International Standard (DIS) and Final Draft International Standard (FDIS) (or probably WG does) Slide 3

4 ISO TMB ISO/TC 28 Petroleum ISO/TC 28/SC 2 Measurement ISO/TC 28/SC 5 LNG ISO/TC 30 Flow measurement ISO/TC 193 Natural gas ISO/TC 193/SC 3 Upstream area Slide 4

5 ISO/TC 30 Flow measurement in pipes for general use Participating members: Brazil (ABNT), China (SAC), Czech Republic (UNMZ), Egypt (EOS), Germany (DIN), Italy (UNI), Japan (JISC), Korea, Republic of (KATS), Netherlands (NEN), Norway (SN), Peru (INDECOPI), Poland (PKN), Portugal (IPQ), Romania (ASRO), Russian Federation (GOST R), Slovakia (SOSMT), Switzerland (SNV), UK (BSI), USA (ANSI) Where a flow-measurement standard is needed by another ISO TC the best method is for TC 30 to produce a generic Part 1 and for the other TC to produce a Part 2 containing any specific sectorial requirements. Slide 5

6 ISO/TC 30 strategy uncertainty, data-fitting calibration methods vocabulary TC 30/SC 2 Pressure differential devices includes sonic nozzles (ISO 9300) TC 30/SC 5 Velocity and Mass methods velocity-area tracer electromagnetic vortex Coriolis thermal mass ultrasonic TC 30/SC 7 Volume methods including water meters Slide 6

7 ISO/TC 30/SC 2 Differential pressure meters: standards ISO 5167 Part 1 General (2003) Part 2 Orifice plates (2003) Part 3 Nozzles and Venturi nozzles (2003) Part 4 Venturi tubes (2003) Part 5 Cone meters (just about to go to FDIS) Part 6 Wedge meters (just starting) Part 7? Throat-tapped nozzles (proposal expected from Japan) ISO 2186 Impulse lines (2007) ISO 9300 Sonic nozzles (2005) Slide 7

8 ISO/TC 30/SC 2 Differential pressure meters: technical reports ISO/TR 9464 Guidelines (2008) ISO/TR Wet gas (2012) ISO/TR DP meters outside ISO 5167 (2007) ISO/TR DP meters beyond ISO 5167 (2007) Drain holes, small meters, no upstream/downstream pipeline, conical entrance, quarter-circle, eccentric orifice plates, Venturi tubes with 10.5 convergent Slide 8

9 % error in measured flowrate % error in measured flowrate ISO/TC 30/SC 2 Differential pressure meters: technical reports ISO/TR DP meters beyond ISO 5167 (2007) Drain holes, small meters, no upstream/downstream pipeline, conical entrance, quarter-circle, eccentric orifice plates, Venturi tubes with 10.5 convergent Tappings at 180 deg from drain hole Tappings at 150 or 155 deg from drain hole Tappings at 115 or120 deg from drain hole Tappings at 90 deg from drain hole CNR: Tappings at 180 deg from drain hole CNR: Tappings at 90 deg from drain hole Tappings at 60 deg from drain hole Possible uncertainty Tappings at 180 deg from drain hole -1.0 Tappings at 150 or 155 deg from drain hole Tappings at 115 or 120 deg from drain hole Tappings at 90 deg from drain hole -1.5 CNR: Tappings at 180 deg from drain hole CNR: Tappings at 90 deg from drain hole Tappings at 60 deg from drain hole Uncertainty in ISO/TR d h /d d h /d Current equation Proposed equation ISO/TR 3313 Pulsating flow (1998 but withdrawn) Slide 9

10 ISO/TC 30/SC 5 Velocity and mass methods ISO 3354, ISO 3966, ISO 7194 Velocity-area methods (nominally 2008) ISO 2975 Tracer methods (c 1975) ISO 6817, ISO 9104, ISO Electromagnetic meters (c 1992) ISO/TR Vortex meters (1997) ISO Thermal mass meters (2001) ISO Gas ultrasonic meters (2010 and 2012) ISO Liquid ultrasonic meters (2012) ISO Coriolis meters (2015) Slide 10

11 Repeatability Reproducibility For a meter without a flow calibration test 10 sample meters Failure simulation: Exchange of components etc. For a clamp on meter test on pipes of different materials and diameters Diameter measurements Temperature and pressure correction (Annex A) Performance testing (section 9) The items that only need to be done once Performance requirement (section 5) Uncertainty calculation (section 6) Fluid dynamical effects: upstream bends, diameter steps etc. Examples of uncertainty calculations (Annex C). ISO Principles of measurement (section 4) Meter characteristics (section 10) e.g. Corrosion protection, software Calibration of the actual meter (section 9) For a meter without a flow calibration: theoretical prediction n qv KK p A wi vi i 1 Installation (section 7) The difference between conditions in the laboratory and the field Field recalibration: provers Wall roughness (Annex B) Information flow for all ultrasonic meters Information flow for ultrasonic meters without a flow calibration. Information flow for clamp-on ultrasonic meters Information flow for ultrasonic meters with a prover Diagnostics Operational practice (section 11) Audit trail Slide 11

12 ISO/TC 30/SC 5 Velocity and mass methods ISO Electromagnetic meters: guidance ISO Vortex meters ISO Gas ultrasonic meters custody transfer Slide 12

13 ISO/TC 30/SC 7 Volume methods including water meters OIML R49 EN ISO 4064 (becomes BS EN ISO 4064) Harmonized 2014: identical EN ISO OIML text instead of three documents that were similar, not identical Smart meters? Slide 13

14 ISO/TC 30 Policy New areas Hydrogen, medical gases, cryogenics, microfluidics? Interactions ISO/TC 28 (Petroleum) ISO/TC 193 (Natural gas) ISO/TMB API EI Project management CAG (Chairman s Advisory Group) Its own standards ISO 9951 Turbine meters (1993) Horizontal issues Slide 14

15 ISO/TC 30: Horizontal issues ISO 4006 Vocabulary (1991) (VIM has been revised) ISO 5168 Uncertainties (2005) (GUM is being revised) ISO Curve fits (1988) (ISO/TR Line fits withdrawn) ISO 4185, ISO 8316, ISO (c 1985) Calibration methods Weighing Volumetric ISO Methods of specifying performance (1998) Slide 15

16 Why should I take part? All parts of industry (users, researchers, manufacturers, etc.) are required (start at national level). Avoidance of both inaccuracy through inadequate specification and excessive cost through overspecification is vital. Accuracy in taxation is of great importance to Government. Participation in standards-making is an opportunity not only to share knowledge but also to gain it. Slide 16

17 Conclusions A dynamic work programme Differential pressure Ultrasonic Electromagnetic Vortex Great financial significance Slide 17

18 Acknowledgments The Engineering and Flow Programme of the National Measurement Office (BIS) Members of WGs, SCs and the TC, especially chairmen, convenors and secretaries Slide 18