1. Armenia Uzbekistan Main topics - Comparisons - Scientific research - Harmonization of standards and normative documents TC 1.4 Flow measurement V.A. Fafurin VNIIR Kazan, Russia SubTC 1.4.1 Gas flow measurement (BelGIM Minsk, Belarusia) SubTC 1.4.2 Oil and oil product measurement (VNIIR Kazan, Russia) SubTC 1.4.3 Liquefied natural gas (LNG) measurement (KazInMetr, Astana, Kazakhstan) WGFF Meeting, 13-14th April 2015, Arlington WGFF Meeting, 13-14th April 2015, Arlington EURO-ASIAN COOPERATION OF NATIONAL METROLOGICAL INSTITUTES Germany Georgia Azerbaijan Belarusia Bulgaria Сuba DPR of Korea Kazakhstan Kyrgyzia Lithuania Moldova Romania RussiaSlovakia Ukraine Tajikistan

2. Meetings Meetings 9th meeting23 – 25 October 2012, PTB Braunschweig, Germany 22 October 2012, Workshop COOMET.M.FF-S2 Germany, Ukraine, Belarus, Lithuania, Slovakia, Azerbaijan, Tajikistan, Russia, Georgia, Moldova (10 of 18) 9th meeting23 – 25 October 2012, PTB Braunschweig, Germany 22 October 2012, Workshop COOMET.M.FF-S2 Germany, Ukraine, Belarus, Lithuania, Slovakia, Azerbaijan, Tajikistan, Russia, Georgia, Moldova (10 of 18) 10th meeting04 – 06 September 2013, VNIIR Kazan, Russia Russia, Belarus, Ukraine, Moldova, Kazachstan, Slovakia, Lithuania, Germany (8 of 18) 10th meeting04 – 06 September 2013, VNIIR Kazan, Russia Russia, Belarus, Ukraine, Moldova, Kazachstan, Slovakia, Lithuania, Germany (8 of 18) 11th meeting04 September 2014, VNIIR Kazan, Russia Russia, Belarus, Moldova, Kazachstan, Azerbaijan, Germany (6 of 18) 11th meeting04 September 2014, VNIIR Kazan, Russia Russia, Belarus, Moldova, Kazachstan, Azerbaijan, Germany (6 of 18) COOMET.M.FF-S2 Measurement of liquid flowrate 2009 – 2012 (0.01 … 100 m³/h) Status: measurements completed, report (Draft B) finished, under review WGFF Meeting, 13-14th April 2015, Arlington Activities COOMET.M.FF-S4 Comparison of water flow calibration 2009 – 2012 (3 … 20 m³/h) (Slovakia, Cuba, Mexico) Status: measurements completed, report (Draft B) finished, under review – no progress Status: measurements completed, report (Draft B) finished, under review – no progress Comparisons Comparisons New proposal: COOMET 652/UA-a/14: Ukraine (UkrMetrTestStandard Kiev) and Germany (PTB) New proposal: COOMET 652/UA-a/14: Ukraine (UkrMetrTestStandard Kiev) and Germany (PTB) Comparison of low pressure gas volume and volume flowrate (0,01 … 65 m³/h) Comparison of low pressure gas volume and volume flowrate (0,01 … 65 m³/h)

3. COOMET.M.FF-S2 Measurement of liquid flowrate COOMET.M.FF-S2 Measurement of liquid flowrate Measurand:Volume flow rate of potable water: 0.1 m 3 /h to 100 m 3 /h Mass flow rate of potable water: 100 kg/h to 100 000 kg/h Measurand:Volume flow rate of potable water: 0.1 m 3 /h to 100 m 3 /h Mass flow rate of potable water: 100 kg/h to 100 000 kg/h Temperature: 18 … 24 °C Participants: BelGIM Minsk, Belarus, COOMET Participants: BelGIM Minsk, Belarus, COOMET NSC "Institute of Metrology„ Kharkov, Ukraine, COOMET NSC "Institute of Metrology„ Kharkov, Ukraine, COOMET PTB Braunschweig, Germany, EURAMET (CIPM KC, Pilot) PTB Braunschweig, Germany, EURAMET (CIPM KC, Pilot) SMU Bratislava, Slovakia, EURAMET SMU Bratislava, Slovakia, EURAMET UZSTANDARD Taschkent, Uzbekistan, COOMET UZSTANDARD Taschkent, Uzbekistan, COOMET LEI Kaunas, Lithuania, EURAMET LEI Kaunas, Lithuania, EURAMET VNIIR Kazan, Russia, COOMET WGFF Meeting, 13-14th April 2015, Arlington Time: 2009-201 Time: 2009-2012 Status: measurements completed, report (Draft B) finished and still under review

4. CONCLUSIONS of the last WGFF meeting 2013 in Poitiers …. From the formal point of view, the results of the comparison demonstrate equivalence of the laboratory standards and support their measurement capability statements. But it should be stated, that the instability of the transfer standards used, limits the metrological explanatory power of these results. Because of the current absence of clear requirements concerning the stability of the transfer standards, this should not lead to restrictions concerning the CMC entries of the facilities which took part in this supplementary comparison. COOMET.M.FF-S2 Measurement of liquid flowrate COOMET.M.FF-S2 Measurement of liquid flowrate Addition after discussions in WGFF The flow measurement community has not yet agreed on a value for the transfer standard to lab uncertainty ratio that yields conclusive comparison results. But for CMCs to be accepted during international review, convincing comparison results are necessary, especially for liquid flow standards with uncertainty < 0.03 %. Therefore, some of the comparison participants are advised to pursue further comparisons to support their present uncertainty claims or increase their lab uncertainties to values comparable to the transfer standard uncertainty in this comparison.

5. COOMET CMC entries for Fluid Flow: Cuba:12 Flow:Hydrocarbons Water Dry air Volume:Pipettes and micropipettes (water) Volume:Pipettes and micropipettes (water) Metal or glass artefacts (water) Metal or glass artefacts (water) Storage tanks (water, diesel) Underground, road, railway tanks Ukraine: 3 Flow:Dry air Ukraine: 3 Flow:Dry air EURAMET Germany: 40 Slovakia: 10 Lithuania: 8 WGFF Meeting, 13-14th April 2015, Arlington WGFF Meeting, 13-14th April 2015, Arlington Russia: 5 Air speed (VNIIM) Russia: 5 Air speed (VNIIM) FlowLow pressure gas (VNIIR)