Antistatic Lined Piping System
Super manufactures lined pipe and fittings with static dissipating liners, commonly referred to as having ‘Antistatic’ properties. By combining the PTFE or PFA fluoro polymers with special graphite fillers, the liners are able to conduct any build up of static from the pipe bore to the steel work.
Why use “Super” Static Dissipating Lined Piping Systems?
There are many ways that electrostatic charge can be generated and accumulated. Static electricity develops when two different materials are brought together and then separated; one of the materials acquires electrons from the other material and becomes positively charged. We have all experienced this when touching across carpet and subsequently receiving a mild shock. Whilst this is harmless enough within an office environment, on a site with flammable substances, even the smallest of spark can ignite the explosive mixture with catastrophic results.
In pipe lines carrying low conductivity fluids, the fluid can lose some of its electrons and these can accumulate or ‘charge’ the pipe work. This process is known as flow electrification, the charge build up increases as flow velocity and pipe nominal bore increases.
Super standard virgin fluoro polymers have excellent insulating properties, so in certain situations electrical charge can accumulate on the liner surface through flow electrification. Super’s static dissipating pipelines and fittings allow any build up of charge to safely dissipate through the liner to the MS/SS pipe. For the electrical charge to dissipate to earth surface, the steel pipe must be sufficiently earthed.
The fillers used to provide the electrical continuity do not impair in any way the mechanical and chemical resistance of the liners. They exhibit the same performance as virgin liners, the conducting agent used within the liners are stable and are not subjected to chemical attack and will not leach into the process fluids.
Super antistatic lined pipes and fittings are an effective and proven solution to the fire and explosion risks at chemical process industries caused by static generation.