Gas Pressure Control Packages (GRP)

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Gas Pressure Control Packages (GRP)
 

Spec. TU 3647-037-00153229-2014

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  Gas Pressure Control Packages (GRP)
  Gas Pressure Control Packages (GRP)
  Gas Pressure Control Packages (GRP)
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Gas pressure control packages (GRP) are the process units intended to reduce gas pressure and maintain it at the required level for gas distribution networks. GRP packages treat gas to remove mechanical particles, provide commercial metering, control inlet and outlet pressure, temperature and other gas parameters.

GRP packages operate to provide gas for cities and settlements, separate dwellings, boiler houses, thermal power plants, process and other gas consuming facilities.

Block, control, safety and vent valves, along with safety, tripping, automation and measuring devices are included in scope to provide safe operation.

GRP packages provide:

  • gas treatment to remove condensate moisture and mechanical particles followed by manual or automatic drain of treatment wastes;
  • gas pressure reduction form high to set lower, maintaining it at given accuracy regardless gas flow fluctuations and automatic gas supply shutdown at inlet gas pressure fluctuations beyond the allowable range;
  • process or commercial gas flow measurement and recording throughout the flow range with respect to readings (pressure, temperature, dew point etc.);
  • 24×7 automatic control over the operation condition for skid-mounted process equipment;
  • remote emergency alarms and routine process readings;
  • automatic condensate drains to the rundown tank;
  • natural gas quality readings using chromatograph, dew point analyzer, calorimeter or other selected instruments (available upon request).

GRP packages include the following auxiliary systems:

  • nitrogen or air purging for separate parts;
  • emergency UPS power supply from accumulator batteries;
  • utility gas treatment and metering;
  • manual control to fine-tune hardware and process parameters (pressure, flow etc.);
  • indoor heating available in both water (external source or in-house boiler installed in dedicated compartment) and electric (using heaters suitable for hazardous area) options — Customer selection is welcome;
  • permanent natural ventilation providing at least 3x fold hourly air exchange;
  • natural and (or) artificial lighting.

The list of functionality options for GRP packages may be customized to Customer needs.

Containerized options are available for GRP packages featuring single or several thermally-insulated compartments; two more options are cabinet- or skid-mounted; both indoor and outdoor designs enable various installation solutions.

Factor
Figure
Inlet gas pressure, MPa
0.6 … 1.2
Outlet gas pressure, MPa
0.001 … 1.2*
Flow, ths. nm3/hr
1 … 500**
Number of outlet connections, EA
up to 5
Maximum inlet diameter, mm
500
Maximum outlet diameter, mm
1000
Fluid
natural gas, APG or other gases
Inlet gas temperature, °С
minus 20 … 45
Outlet gas temperature, °С
minus 20 … 130
Seismicity
up to 9
Climatic performance per GOST 15150-69
U1, UKhL1, KhL1, U2, T1)
(Cyrillic У1, УХЛ1, ХЛ1, У2, Т1)
Design service life, years
up to 40
Design
skid-mounted or containerized

* Available for customization for each connection upon request
** Total for all connections