Question 28 of 30
Use of Pressure-Vacuum (PV) Relief Valve; label the diagram correctly:
1-IG Main; 2-Deck Isolating Valve; 3- Vent Main; 4- By-Pass Valve; 5- PV valve; 6- Tank Isolating Valve
1-Deck Isolating Valve; 2- Vent Main; 3- IG Main; 4- By-Pass Valve; 5- PV valve; 6- Tank Isolating Valve
1-Deck Isolating Valve; 2- IG Main; 3- Vent Main; 4- By-Pass Valve; 5- PV valve; 6- Tank Isolating Valve
1-Deck Isolating Valve; 2- IG Main; 3- Vent Main; 4- By-Pass Valve; 5- Tank Isolating Valve; 6- PV valve
Answer & Explanation
The correct answer is Option C: 1-Deck Isolating Valve; 2- IG Main; 3- Vent Main; 4- By-Pass Valve; 5- PV valve; 6- Tank Isolating Valve.
The Pressure/Vacuum (PV) valve setup includes isolating valves and a bypass to allow for testing or maintenance. Option C provides the correct sequence for managing the connection between the inert gas main, vent line, and the tank.