Mechanical Engineering - Machine Design - Discussion

The correct answer is: butt joint with double cover plate.

Circumferential joints in boilers are typically made using a butt joint with double cover plates. This type of joint is strong, reliable, and can withstand high pressures and temperatures.

A butt joint with double cover plates consists of:.

1. Two ends of the boiler shell or tube to be joined.
2. A single butt joint between the two ends.
3. Two cover plates, one on each side of the joint, that wrap around the boiler shell or tube.

The double cover plates provide additional strength and security to the joint, making it suitable for high-pressure and high-temperature applications.

The other options are not correct:

- Butt joint with single cover plate: This type of joint may not provide sufficient strength and security for high-pressure and high-temperature applications.

- Lap joint with one ring overlapping the other: Lap joints are not typically used for circumferential joints in boilers, as they may not provide sufficient strength and security.

- Any one of the above: While butt joints with single or double cover plates can be used in some applications, the double cover plate option is the most suitable for circumferential joints in boilers.

Note that the specific type of joint used may vary depending on the boiler design, size, and application.

@Dhaval.

Correct explanation. Thanks.

The longitudinal joint is butt joint with the double cover plate.

The circumferential joint is a lap joint with one ring overlapping the other.

The Correct answer is C.

Yes, the correct option is B.

I think Option B is correct.