We supply controls for mobile pumping of natural gas during shutdowns

The gas distribution network in the Czech Republic is extensive and any downtime due to repairs or other issues is not desirable. During planned reconstructions and repairs of high pressure pipelines, there is a possibility of pumping natural gas from the shut down sections to the high pressure pipelines to the operating part of the gas facility.

In order to enable the distribution company to carry out the pumping as quickly as possible and with the least possible loss of gas leakage, Homola a.s. manufactures and supplies mobile pumping equipment. It also includes the Z210 control system based on the SandRA platform.

The ZAT control system controls the compressor, which has a peak output of up to 1,600 Nm³/hr of natural gas and enables fast and safe pumping from staging pipelines. For proper pumping, the pressure, temperature and gas flow, and the associated opening and closing of pneumatic valves, need to be measured. The technology also includes safety features for emergency shutdown, gas concentration measurement and more.

To keep the local operator informed of the pumping process, there is a touch panel in the mobile car that also archives the measured data. The entire system, including the compressor, is mounted on a MAN 4x4 chassis so that pumping is possible even in difficult and poorly accessible terrain. A thirty metre long pressure hose offers variable positioning on site.

Modern control system Z210
The compact SandRA Z210 series, derived from the Z200 series, is designed for controlling smaller technologies such as heat exchangers, control and transfer stations in the gas industry or wastewater treatment plants.

The Z210 stations are also suitable for collecting data from various terminal devices with different communication protocols and for transmitting it to remote control stations. Their advantages are the compact design of the control module, small size, easy installation in control cabinets and the possibility of DIN rail mounting. More information can be found on the ZAT website.