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  1. guevara74

    SIL certification for an Self-Contained Hydraulic ESD valve

    Hi there, I got these days an Self-Contained Hydraulic actuator with own hydraulic system and options to be actuated or itself, or via a electrical actuation on the existing option for the solenoid. First, I did assessed the electrical actuation option - the solenoid been powered just triggers...
  2. guevara74

    Two Lead and Lag Reciprocating compressors control 1 stage each

    Rare, but very Rare the downstream will get blocked so the new compressor skid to have discharge raising quick high up. It is open discharge to a pipeline. But, in case, if, somehow, the pipeline gets blocked by an misoperating of something, then the shot down in a domino sequences will occur to...
  3. guevara74

    Two Lead and Lag Reciprocating compressors control 1 stage each

    the situation is a bit different than the usual one. Basically the suction is providing a stable pressure of 15barg as a discharge of an another compressor train which is self acting and out of this scope. Now, the skid (both compressors working at max load) can handle about 140% of the provided...
  4. guevara74

    Two Lead and Lag Reciprocating compressors control 1 stage each

    Yes, both compressors are of the same configuration and are located on the same base plate/skid. The distances from suctions of each compressor up to the pipe split is equal. The main incoming stream of the gas shall be constant in flow with some small deviations from time to time. When the...
  5. guevara74

    Two Lead and Lag Reciprocating compressors control 1 stage each

    Thanks George, I have been about in the same wave of having the control done. Actually was thinking to have the PIC as master for both SIC, but more dedicated approach will just make more reliable the control as you have proposed. Have attached some sketches. On the bottom side are the 2...
  6. guevara74

    Two Lead and Lag Reciprocating compressors control 1 stage each

    Hi, I am not so experienced in this field and want to share some thoughts regarding some standard skids of 2 reciprocating compressors that are suppose to work as lead and lag: First, the lead is getting ramped up till getting 100% load and if the inlet pressure still raises then the second...

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