CNG Station Daily Maintenance Log

Posted by on May 16, 2013 in Tips

CNG Station Daily Maintenance Log

Many of you are already documenting the performance of your CNG stations / NGV refueling stations. This provides you with a daily history, a means of comparing past performance with the present with an eye on future performance. We encourage our customers to fill out log sheets on a daily basis. In one instance we had an individual that had never seen an NGV station before but was responsible for filling out the log sheet. We marked each point alphabetically for them and...

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Clocking CNG Compressor for Gas Flow

Posted by on May 16, 2013 in Tips

Clocking CNG Compressor for Gas Flow

To clock a gas compressor you will need to identify the following: That the only load on the gas meter is the compressor you are clocking. What the gas pressure is at the meter while you are clocking. What the smallest rotary dial on the meter measures in one revolution. Next, record how long it takes for a given amount of gas to go through the meter and what pressure the meter was at when you clocked it. Now the fun part; use the following formulas: Correction Factor =...

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At start-up, purge your CNG fueling system of air

Posted by on May 16, 2013 in Tips

At start-up, purge your CNG fueling system of air

Natural gas is highly explosive when combined with oxygen and an ignition source. In order to operate your NGV station safely, you should remove all the air from the system especially at start-up. We suggest using an inert gas such as nitrogen. Here are some simple steps to follow; remember these are a simple guide and may or may not apply to your specific module. Open the manual drain valve on the vent recovery tank. Turn auto condensate drain manual “dump...

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CNG Fueling Site Safety

Posted by on May 16, 2013 in Tips

CNG Fueling Site Safety

The issue of CNG Fueling site safety in the field is one that should never be compromised. We are adamant about this at CNGCenter.com as you should be also. Here are some basic rules that I make sure all of our own service technicians follow: Understand and use good lockout and tag out procedures. Never work on compressor engine internals or rotating externals without locking out all electrical power and closing and securing with lock and tags all gas into and out of the...

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