PRODUCTION • PROCESSING • HANDLING
Safe under pressure
Eike Kobbe introduces a solution designed to keep gas pipelines flowing and enable operators to tackle any pressure changes
can often be both costly and dangerous. When it comes to gas pipelines, being able to detect and react to any changes in pressure is mission- critical.
T
Te DVGW (German Technical and Scientific Association for Gas and Water) certified safety shutdown units (SSUs) from Böhmer serve to safeguard gas pipeline systems to the current directives for such units to DIN EN 14382 as complete turnkey units. Each unit consists of a ball valve with full
passageway, a simple action, spring-closing actuator and a gas-high-pressure control with two high pilots and one low pilot. Te spring-loaded actuator closes
he oil & gas industry is a sector where fast reaction times are absolutely non-negotiable. Across the whole production process, any downtime (particularly that which is unplanned)
the SSU when the gas pressure as measured increases to above the maximum permissible pressure that has been set for the pipeline. In addition, it keeps the ball valve closed if the gas pressure as measured is below the minimum that’s set on the low pilot. Tis prevents the situation where the SSU remains in an undefined intermediate position when the system is being run up.
DESIGN CHARACTERISTICS Te trunnion-mounted ball valve with two floating, spring-supported PMSS seals is characterised by low torques. Te ball valve is almost without pressure loss and is piggable without restriction. It is also provided with a double-block and bleed function directly on the housing. Te unit is suitable for aboveground and sub-surface mounting. Te two first trunnion seals can be replaced easily under pressure in the closed position.
The safety shutdown units (SSUs) from Böhmer help to safeguard gas pipeline systems
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