ASCO units to control valves at Russia refinery
22 Jul 2011
St Petersburg, Russia – Surgutneftegas is to use actuator control systems from ASCO Numatics to control large actuators at its Kirishi refinery near St Petersburg. The facility will employ 88 half-inch NPT ACS units to control valves used to regulate the flow of oil.
The ACS being supplied to Kirishi consists of a three-way solenoid (pilot) valve, a filter regulator and a pressure relief valve, said ASCO Numatics.
The filter regulator cleans the air before it enters the pilot valve extending the operating life of the valve from 5 million up to 10 million cycles. The pressure relief valve protects the pilot valve in an emergency situation.
The ACS is SIL 3 and IECEx/ATEX approved and certified to the Russian GOST Standard. Manufactured in 316L stainless steel, the system flow path and is claimed to be lighter, stronger and more compact than conventional panel mounting assemblies.
System components that include explosion proof solenoid valves, spool valves, manual reset valves and filter regulators.They are connected by means of a versatile, leak tight coupling system and mounted on a vibration resistant and shock proof stainless steel base plate.
According to ASCO Numatics, many configurations are possible with filter regulators and various single or redundant solenoids with wide pressure ranges and no minimum operating pressure.
A range of explosion proof solenoids is available with ATEX /IECEx (Ex d, Ex e mb, Ex ia), NEMA, UL and CSA approvals. The solenoid valves can also be used in safety instrumented systems with a safety integrity level (SIL) up to SIL-4.
