Compressor Lab

CENTRIFUGAL COMPRESSOR

RECOMMENDED TIME
Startup of this system may take about two to three hours in actual practice, but the simulator compresses this time and it should take about 20-30 minutes to complete the exercise described here.

SITUATION
Prior to initiating this simulated startup it is assumed that all of the pre-commissioning steps have been taken. These steps are:

Pressure testing of lines and equipment
Flushing and cleaning of lines and equipment
Removal of blinds
Run in of C-201
Instruments checked for reliability and zeroed
Utilities available

In order to properly simulate a cold startup it is necessary that the Console Switches be in the following positions:
Console Console
Switch No. Position Name
40 CLOSE Feed Block Valve HV-300
41 CLOSE Steam Block Valve HV-330
42 NORMAL Feed Block Valve HV-300 Fails

43 NORMAL Steam Block Valve HV-330 Fails Closed
44 NORMAL Kick Back Valve V-360 Fails Open
45 NORMAL Kick Back Valve V-360 Fails Closed
46 NORMAL Forward Gas Flow V-380 Fails Open
47 NORMAL Forward Gas Flow V-380 Fails Closed

All Automatic instrument controllers should be in the manual mode with control valves closed.
Prior to admitting process fluid to the unit it is necessary that all of the utility systems be started up, checked out, and operating.

START-UP
1) Open feed block valve HV-300 and steam block HV-330 with switches HS-300 and HS-330 respectively.
2) Manually open FIC-360 (By-Pass Flow) about 35%.
3) Open PIC-320 (Suction Drum Pressure) manually to obtain a pressure of 3.52 KGCM2.
4) Switch PIC-320 to automatic.
5) Open PIC-360 (Compressor Discharge)) manually to 7.03 KGCM2, and switch to automatic.
6) If speed goes over 5000 rpm, reduce PIC-360 to hold it below 5000 rpm.
7) Open FIC-380 (Product Gas Flow) manually to 4.25 KNM3H, and switch to automatic.

8) Open PIC-390 (Product Gas Pressure) manually to 5.6 KGCM2, and switch to automatic.
9) Switch FIC-360 to...