RGC is testing its gas control points according to European standards for working with hydrogen gas mixtures
The regional gas company has started hydrogen tests of cabinet gas control points produced by RGC Production to confirm the readiness to work with hydrogen gas mixtures with a hydrogen content of up to 20%. Testing will last a month at testing sites in five regions of Ukraine; the company's press service reports.
From August 25 to September 22, 2021, five hydrogen testing sites in Zhytomyr, Kharkiv, Dnipropetrovsk, Volyn and Ivano-Frankivsk regions will continue to test gas control equipment sets for the ability to work on hydrogen gas mixtures. All gas reduction points are manufactured at RGC Production plants and equipped with Pietro Fiorentini H2-ready regulators, certified to work with a 20% hydrogen mixture by the manufacturer.
Testing of gas control points is carried out to present RGC Production equipment at the Enlit Europe International Exhibition as H2-ready and further export of Ukrainianmade products to EU countries. In parallel, gas metering units, gas control points with gas metering units, GDU, BTGCU will be tested as products that can work with a 20% hydrogen gas mixture.
Tests will be carried out on the five most common types of CGDU with capacities from 50 cubic meters/h to 350 cubic meters/h. Such equipment is mainly used for gas regulation for domestic and small industrial gas consumers.
Before testing, each gas reduction point is purged with inert gas and filled only with natural gas or a hydrogen gas mixture. At each facility, all tests are first carried out on natural gas and then on a hydrogen gas mixture. After that, the results are compared.
The following experiments will be conducted at each of the five testing sites: Checking the safety shut-off valves: the pressure is gradually increased on the CGDU, and pressure readings are recorded at the moment when the safety valve activates.
External leak test: the gas-filled CGDU is kept for 12 hours under working pressure. Periodically, it is examined for leaks (welded joints, split joints, pressure regulator housings, SSV, SBV, gas filters). In case of detection of leaks, the leaking point is marked, and the gas concentration identified by the device is recorded.
Internal integrity check: on a gas-filled CGDU, the regulator's integrity is checked by changing the gas flow rate through the setter, first – in the direction of increasing the flow rate, then - in the direction of reducing the gas flow rate.
Checking the pressure drop on the gas filter: at the maximum gas flow rate, measure the value of the pressure drop on the filter.
The capacity of gas reduction points depending on the type:
- type 2 up to 50 cubic meters / h
- type 3 up to 75 cubic meters / h
- type 4 up to 120 cubic meters / h
- type 5 up to 250 cubic meters / h
- type 6 up to 350 cubic meters / h
Bureau Veritas Ukraine is involved in the testing process of CGDU manufactured by RGC Production; it verifies the compliance of tests with the developed and approved methodology for testing equipment operation on a methane-hydrogen mixture.