After allowing for pressure losses, the...

After allowing for pressure losses, the...

Question 1 of 270705eccef9dbacbc34ba4d45cf7

After allowing for pressure losses, the pressure-volume capacity of an inert gas blower must be able to maintain a pressure, in any cargo tank, at a minimum of __________.

Question 1 of 27070

Q

After allowing for pressure losses, the pressure-volume capacity of an inert gas blower must be able to maintain a pressure, in any cargo tank, at a minimum of __________.

🔍 Key Concepts

• Inert gas system (IGS) requirements for tankers carrying flammable cargoes • Relationship between inert gas blower capacity and minimum positive pressure in any cargo tank • How regulations often express tank pressure in millimeters of water gauge (mmWG)

💭 Think About

• Think about why cargo tanks must be kept under a slight positive pressure and what level is considered safe but not structurally excessive. • Consider which value is commonly used in international standards (like SOLAS and IGS guidelines) as the design minimum tank pressure that the blower must be able to maintain. • Ask yourself: if the pressure is too low, what risks increase? If it’s too high, what equipment or structural limits might be approached?

✅ Before You Answer

• Check what minimum tank pressure (in mm water gauge) is specified in current SOLAS / IGS regulations for inert gas blower design capacity. • Verify that the chosen pressure is clearly stated as a minimum maintainable pressure in any cargo tank, after pressure losses in the system, not just blower discharge pressure. • Confirm that the value you select is a standard benchmark figure used repeatedly in tanker inert gas system design references.