Answer / mahesh

Before start up a plant need to cheek instrument range, connection, parameter, soars. different cheeking only help of p&id.

Answer / raja2016

In addition to above ans w. r.t an instrument...

w.r.t to a system consists of PLC panel
Earthing should be done properly and proper earth resistance value...
Electronic earthing and body earthing..

UPS supply availability, all the cables.,
PLC-MCC
PLC- field
ensuring laid,terminated and loop checked okay...

PLC- SCADA PCs all Ethernet cables laid and terminated as per system architecture...

Answer / s93381

before the plant startup check all system instrument parameter that is Pre- commissioning.

Answer / faiyaz

before start up the plant we check all the instrument and parameter with the water in process line that is called pre commissioning

Answer / faiyaz

pre commissioning is the process of providing the ability of a pipe line and piping system to contain product without leaking

How to calibrate DP transmitter by using HART communicator ?

1 Answers  

What is difference between flame retardant & flame resistance cable? Among which type of cable is used for ESD & Fire and Gas system application?

1 Answers  

Why we use 4 to 20 mA, (This is International Standard) instaed of this can we use 4-16, or 4-24 or 3- 15 or any other range

13 Answers   ONGC,

May I have a brief note above the voltage barriers? Whats is the purpose? Please mail me if you've operational details, mail id: rajkumar.diice@gmail.com

0 Answers  

how the transmitter send MA?

1 Answers  

ABB DCS (AC 800 M)redundency take howmany milliseconds to switch from master controller to slave?should be less than DCS scanning time?

2 Answers   SCS,

Explain " FAIL SAFE " feature in temp. measurement.

1 Answers   Bapco Bahrain Petroleum Company,

i want all model questions paper for robert bosch

1 Answers   Bosch, Patni,

what is concept of field,control room area in transmitters?

1 Answers  

How to convert 4 wire level transmitter connection to 2 wire.

2 Answers  

what is start up vent valve ? why it is used in boiler?

8 Answers   ACC, Bhushan Power Steel,

Before erect the instrument what should you do?

3 Answers   L&T,