in the pipe line if the control valve fails to respond to
controller action,by what means we can stop the flow in the
pipe line ?

Answer Posted / chaitanya

Generally if the control valve is not responding to
controller based upon its control philosophy it may get
operated by interlocks or it may go to fail safe condition
of the control vavle

Is This Answer Correct ?    6 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Can any one tell me what type of question asked for instrumentation and control interview panel??? pls mail ramashankar.goel@gmail.com

491


What inherent design and operating principles are included in a modern control system to use predictive maintenance practices to increase overall system reliability?

1605


A valve in series with an orifice plate (DP transmitter), is aligned for constant pressure in the pipeline, if there is an error dx, How to align it in process.

875


What is Positive Calibration and Negative Calibration?

1768


Can anyone send most commonly asked interview question in Oil & Gas industry

1764






what is metal of piston ring

1500


What is surge and how is it prevented, what is the purpose of bypass valve across AS valve.

1478


Full form of KKS when use DCS.

2611


how to check earthing,what is minum ohms for proper earthing

1512


A flange is used for instrument connection for a system with a design temperature of 316C (600F) and a design pressure of 1000 kPa (145 psi). What is the class rating of the flange to be used for this application? Explain your answer

1872


hii my name is sujith...i am preparing for HPVL GET 2010... so ,,,pls help me by send any previous questions or material to my site.....(Msujith_12@in.com) thank q

1462


How d.p. Transmitter can be applied to close tank?

610


How d.p. Transmitter can be applied to open tank?

644


what is the difference between scaler and vector drive

1667


Can I calibrate the Electromagnetic Flow Meter on line and How.

1396