Pipeline Drying International, LLC
Pipeline Drying International (PDI) has newly patented, high volume air drying equipment that is changing the way pipeline drying and station drying is performed. From a self-contained 20 foot container, PDI's new Mobil Drying Unit (MDU 8000) can produce the equivalent super dry, oil free air as (4) four 1600 CFM air compressors with desiccant dryers, while consuming less than 400 gallons of fuel per 24 hours. Basically, we offer the smallest footprint and greatest volume of dry air per gallon of fuel of anything on the market.
So why is pipeline drying necessary? Pressure testing of pipelines, stations, tanks or pressure vessels of any type is critical to prove the integrity of that system. Hydrostatic testing is typically performed after new construction but is also performed to fulfill mandatory integrity requirements. Unfortunately, residual water left after hydrostatic testing is not always acceptable in many natural gas application and other systems.
In natural gas pipelines, small amounts of water left in the pipeline can cause corrosion issues and create problems in the way of hydrate formation and icing problems that can start to reduce flow rates. Water can also create product quality issues or system upsets. In systems where water is unacceptable, drying can become a critical service. The most common methods for pipeline drying, station drying and tank drying are Air Drying, Nitrogen Drying, and Vacuum Drying. Pipeline Drying International can perform drying with all of these methods. However, we feel that high volume air drying has historically proven to be both fast and cost effective.