Cylinders diameters greater than 230 mm...

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Cylinders diameters greater than 230 mm require additional safety devices when the scavenging spaces are openly connected to the cylinders. Which of the following devices will be used to protect such spaces?

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🔍 Key Concepts

• Scavenging spaces on large 2-stroke diesel engines and what can accumulate there • What happens when an air–fuel mixture in an enclosed space is ignited • Purpose of pressure relief / explosion relief devices on crankcases and scavenge spaces

💭 Think About

• Think about what kind of danger exists in scavenging spaces that are openly connected to the cylinders on large-bore engines. • Which device from the list is specifically designed to open at a set overpressure and safely discharge hot gases and flame? • Which options are ordinary piping/connection components versus devices whose primary role is to protect against internal explosions or bursts?

✅ Before You Answer

• Identify which choice is explicitly intended for overpressure or explosion protection rather than normal flow or mechanical joining. • Eliminate any options that are just fittings or joints used for assembly, not for safety relief. • Consider which device would be located on enclosed gas spaces (like crankcases or scavenge spaces) to vent pressure in case of ignition.

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