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Electrostatic Discharger System for Polyethylen...

SKU: GRI-92/0460
Electrostatic Discharger System for Polyethylene Pipes in Gas Distribution: Phase I

Internal charge generated by particulates in gas flowing through polyethylene (PE) pipes induces exterior charge of opposite polarity. High external charge buildup can produce spark discharges to nearby objects.
Document Type
Report
Report Type
Final Report
Report Period
11/89 - 02/92
Corporate Source
Southwest Research Institute, San Antonio, TX
Sponsor
Gas Research Institute, Chicago, IL
Pagination
149p
Product Media
PDF Download
$295.00 / Each
 
Availability: In Stock
Summary:
Internal charge generated by particulates in gas flowing through polyethylene (PE) pipes induces exterior charge of opposite polarity. High external charge buildup can produce spark discharges to nearby objects. Interior charge encountered when cutting PE pipe during leak repairs can also result in spark discharge. Spark discharge sources (both internal and external) must be avoided for safety reasons when flammable gas-air mixture is present. Reported here are the results of a recent research project where techniques and procedures have been developed to neutralize charge accumulations on the inner and outer surfaces of PE gas pipe. A discharger was developed for penetrating the pipe wall and applying an antistatic spray inside the pipe to neutralize the interior charge. External charge is eliminated by wrapping the pipe with an antistatic PE film or by applying an antistatic fluid (non-freezing, non-evaporating, and harmles to PE) to the exposed areas. The film is more effective that the common wet burlap presently used. Detailed drawings of the internal discharger are provided in the appendixes.
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