In accordance with 46 CFR Subchapter F...

Question 1 / 270705eccefa0bacbc34ba4d46f5d

Question 1 of 270705eccefa0bacbc34ba4d46f5d

In accordance with 46 CFR Subchapter F (Marine Engineering), which of the following is permitted in boiler fuel oil service system discharge piping?

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Question 1 of 27070

In accordance with 46 CFR Subchapter F (Marine Engineering), which of the following is permitted in boiler fuel oil service system discharge piping?

🔍 Key Concepts

• 46 CFR Subchapter F requirements for fuel oil service system piping • Restrictions on use of fittings (unions, bushings, street ells, valves) in fuel oil discharge lines • Differences between threaded/screwed connections and welded/flanged connections in high‑risk systems

💭 Think About

• Which of these fittings is specifically mentioned in 46 CFR Subchapter F as being allowed in fuel oil service discharge piping, and under what limitations? • Which fittings are generally restricted or discouraged in fuel oil systems because of leak and fire risk? • Think about which item would most likely be found in a high‑integrity, high‑temperature fuel oil line on a modern inspected vessel.

✅ Before You Answer

• Verify in 46 CFR Subchapter F which fittings are explicitly prohibited in fuel oil discharge piping (e.g., unions over a certain size, certain screwed fittings). • Check if the regulation allows only one of these items under specific conditions, while the others are not mentioned or are restricted. • Confirm whether any of these fittings are limited by size, type (screwed vs welded), or service (suction vs discharge) in the text of the regulation.

Question 1 of 27070

In accordance with 46 CFR Subchapter F (Marine Engineering), which of the following is permitted in boiler fuel oil service system discharge piping?

Bushings made of seamless steel.

Street ells made of carbon steel.

Pipe unions one inch or greater in diameter.

Screwed bonnet valves of the union bonnet type.

Question 1 / 270705eccefa0bacbc34ba4d46f5d

Question 1 of 270705eccefa0bacbc34ba4d46f5d

In accordance with 46 CFR Subchapter F (Marine Engineering), which of the following is permitted in boiler fuel oil service system discharge piping?

Back

Question 1 of 27070

In accordance with 46 CFR Subchapter F (Marine Engineering), which of the following is permitted in boiler fuel oil service system discharge piping?