# Operazioni Code Description
1 TT Temperature transmitter
2 VA-LI Actuated valve, liquid
3 XT Transmitter
4 VA-GA Actuated valve, gas
5 VA-EL-LI Actuated valve, electrical-operated, liquid
6 VA-EL-GA Actuated valve, electrical-operated, gas
7 VA-ESD-LI Actuated valve, emergency service, liquid
8 VA-ESD-GA Actuated valve, emergency service, gas
9 VE-LI Pressure vessel, liquid
10 VE-LI-HP Pressure vessel, liquid, High Pressure
11 VE-LI-LP Pressure vessel, liquid, Low Pressure
12 VE-GA Pressure vessel, gas
13 VE-GA-HP Pressure vessel, gas, High Pressure
14 VE-GA-LP Pressure vessel, gas, Low Pressure
15 COL-LT Column/Contactor, Low Temperature
16 COL-HT Column/Contactor, High Temperature
17 TA Tank
18 HE-LI Heat Exchanger, liquid/liquid-gas
19 HE-LI-LP Heat Exchanger, liquid/liquid-gas, Low Pressure
20 HE-LI-HP Heat Exchanger, liquid/liquid-gas, High Pressure