Coast Guard Regulations (46 CFR) concerning...

🔍 Key Concepts

• 46 CFR requirements for propulsion machinery and lubricating oil systems (look in 46 CFR Subchapter F – Marine Engineering) • The idea of segregation/independence of critical piping systems on a ship • What is normally required as redundancy versus what is just good practice but not strictly required

💭 Think About

• Ask yourself: Which of these options sounds like a basic safety principle that would be written as a general rule for all ships, not a very specific design detail? • Think about typical shipboard systems: Is it common (or even practical) to have three separate ways to circulate water through lube oil coolers, or two standby pumps for every main turbine? • Which choice reflects a rule that helps prevent a single failure in another system from affecting the lubricating oil system for main propulsion turbines?

✅ Before You Answer

• Verify in 46 CFR whether lubricating oil piping is allowed to be combined with any other system (e.g., fuel oil, hydraulic oil, or control oil), or if it must be separate. • Check if 46 CFR actually mentions a 25° permanent list as a design condition for the lube oil system, or if that value sounds more like a stability/operating condition used in other contexts. • Confirm whether the regulations explicitly require two standby lube oil pumps or if they more generally address the arrangement and independence of the system.

Coast Guard Regulations (46 CFR) concerning lubricating oil systems for main propulsion turbines, require __________.

the lube oil system to function satisfactorily when the vessel has a permanent list of 25°

lube oil coolers to have three separate means of circulating water

lube oil piping to be independent of other piping systems

two standby auxiliary lube oil pumps be provided

🔍 Key Concepts

💭 Think About

✅ Before You Answer