How is the minimum bursting pressure for...

How is the minimum bursting pressure for...

Question 1 of 3104866636ee728f7522a1c51815b

How is the minimum bursting pressure for each cargo hose assembly determined?

Question 1 of 31048

Q

How is the minimum bursting pressure for each cargo hose assembly determined?

🔍 Key Concepts

• Cargo hose design safety factors between working pressure and bursting pressure • Relationship between relief valve setting, static head, and maximum possible pressure in the hose • Regulatory requirements in 46 CFR for cargo hose assemblies (tank vessels / dangerous liquid cargo)

💭 Think About

• First, figure out what total pressure the hose might actually experience in service (what two things are being added together in the formulas?). • Then, think about why regulations require a safety margin between that maximum operating pressure and the hose’s bursting pressure—how big does that margin usually need to be for hazardous cargo? • Consider which multiple would give a realistic but conservative safety factor for a hose that could see sudden surges or overpressure during cargo transfer.

✅ Before You Answer

• Confirm that the base pressure term is relief valve setting + static head (this represents maximum operating pressure). • Think about typical design practice: bursting pressure must be significantly higher than maximum operating pressure, not just slightly higher. • Before choosing, ask: "Would this factor give enough safety margin for flammable/toxic cargo if something goes wrong during transfer?"