Answer Posted / ralu
Steam Service (Filling the water legs)
1. Ensure that the steam line is depressurized with no steam.
2. Check the transmitter for a dry zero of 4 mA with no water loss.
3. Attach hose connection valve to high side vent DVH. See Figure 3-3.
4. Attach a water supply to the hose connection. The water supply
should have a maximum psi of 100.
5. Open the high and low manifold valves MH and ML and equalizer
valve ME (MEH and MEL for 5-Valve Manifolds).
6. Ensure low side vent DVL is closed.
7. Open the hose connect valve for a minimum of 30 seconds.
Water will flow through both the high and low chambers and
into the pipe.
8. Close the high side manifold valve MH for 30 seconds to force water
to the ML side.
9. Re-open the MH valve.
10. Open low side vent DVL until no air is observed.
11. Close the low-side vent DVL.
12. Close the hose connect valve and remove hose.
13. Close both manifold high side valve MH and manifold low side valve
ML.
14. Check the transmitter zero by noting the output. If the signal reads
outside of the range 3.98 mA to 4.02 mA, air is probably still in the
system; repeat this procedure from step 2, and trim sensor if
necessary.
15. Open the manifold high side valve MH.
16. Close equalizer valve ME (for 5-Valve Manifolds first close valve
MEL, then close valve MEH).
17. Open the manifold low side valve ML. The system is now operational.
Is This Answer Correct ? | 0 Yes | 3 No |
Post New Answer View All Answers
Hi Friends , i need one urgent help , i am preparing for M.tech entrance examination , i need some obejective questions related to instrumentation field. where can i get those ? can anyone help me pls ?
what is different between 2,3&4 wire rtd and how much maximum distance using plc to field.
all questions related to instrument technician in any offshore oil and gas company.
How many interlocks at turbine side?
i am having information technology branh ....... can i prepare for psu exam
Explain bernoulli’s theorem.
Boolean algebra
What are the materials available to prepare individually for competetive exams in Instrumentation field? Plz reply...
Senior engineer's please help me, what is Loop Checking and Loop test? and write difference also? soon urgent
please tell me what is a light up procedure of Cfbc boiler and what it's axuillaries of cfbc boiler?
What is the function of solenoid valve in on/off & shutdown valve and why it is not used in control valve normally?
can anyone can let me know in Eurotron Micro cal 2+ calibrator in milli amps source mode we are not able to get 20 milli amps output it only produces 1.52 milli amps out, but display shows increase in milli amps , and err6 displays, let me know how to remove the err 6.
can you provide me full detail about instrumentation in ONGC??
hi friends,im an instrumentation and contol engg student,can u hlp me of suggsting barc written question paper,my id is roysuvaranjan@gmail.com, cel no.9563591747
Draw a great bridge circuit.