If the Barrier Fails during online then What will be the
control valve position in field or Positioner action in the
field.
Answer Posted / james
Based on the process
1st If barrier fails before escalating to a incident - The answer is fail safe c/v CLOSE
2nd when barrier fails - fail safe action done - Then the fail safe action will be - c/v OPEN to atm / flair
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Hi Friends i need Electronics&Instrumentation Engg question papers for BARC written test by coming 20th May 2008 pls post ur use full info to kkumarei@gmail.com. Or for suggestions pls give one missed call to 9962122264
What is instrumentation measurement?
what is the process to make control schematic ?
In bently nevada vibration monitoring system,what is the reason to maintain the Resistance of the probe + extension cable equal to 95 ohm? If possible explain the basic principle of measurement with detail electronic circuits.
which type of signal used in instrument?
How to find out the current of two motors having same power consumption but different RPM?
Where Can i take a SPI INtools training in Mumbai? In Rolta India Ltd to whom I should approach regarding of SPI INtools Training?
What care will you take in the installation of control valves,SCADA,DCS and FOC in Oil and Gas Project?
Why not come out analog output in ABB EL3020 when display show correct value
when the instrument tapping on pipe line is located below and transmitter is located above the tapping point for liquid service transmitter, what should we do, is there any additional drain valve is required??
can we create an interrupt in plc through scada?
What materials are used in thermo wells?
send me last 5 years questions asked in rrb chennai, for section engineer
what is function of sensor, and how is it work , explain with difination
what different types of problems do occur while doing instrumentation commisioning and how to solve them? please explain in detail