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Boiler Outlet Connections Quiz

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Questions and Answers

What is the purpose of outlet connections in a boiler?

To generate steam for the boiler

To increase the pressure inside the boiler

To connect the boiler to various controls, instruments, or fittings (correct)

To regulate the temperature of the boiler

How can fittings and piping be attached to the boiler?

Welded directly to the drum or shell (correct)

Connected with rubber bands

Attached with adhesive tape

Attached with velcro straps

What falls under the technical jurisdiction of ASME B31.1 Power Piping Code?

Boiler cleaning procedures

Boiler fuel consumption

Boiler external piping (correct)

Boiler exterior maintenance

According to ASME B31.1, what is required when two or more boilers are connected to a common header?

Fitting with two stop valves having an ample free-blow drain between them Signup and view all the answers

In Figure 6 described in ASME B31.1, what does Boiler #1 have?

A small steam drum and is only equipped with a handhole Signup and view all the answers

What is the purpose of the check valve in the feedwater piping for boilers?

To prevent the boiler from draining through the feedwater line when the boiler feedwater pump is not running. Signup and view all the answers

According to ASME B31.1, what type of valves are preferred for the required steam shut-off valves?

Outside screw and yoke, rising stem valves Signup and view all the answers

When two or more boilers are fed from a common source, what is required in the branch to each boiler?

Globe or regulating valve located between the check valve and the source of supply Signup and view all the answers

What is the required valve type for blowoff service according to ASME B31.1?

Y-type globe valves Signup and view all the answers

What is the rationale behind requiring slow-opening blowoff valves for boilers with allowable working pressures over 100 psig (690 kPag)?

To reduce wear on one valve by allowing it to operate in non-moving fluid Signup and view all the answers

What is the minimum pressure rating required for all valves or cocks in a boiler?

Not less than 120°C Signup and view all the answers

Why is it recommended to use outside screw and yoke valves with rising spindles for steam outlets DN 50 or larger?

To enable visibility of valve position from a distance Signup and view all the answers

Where should the feedwater connection be arranged to enter the boiler?

Internally using a pipe to direct the water to a suitable point Signup and view all the answers

What does ASME BPVC IV Part HG-705(a) state about introducing feedwater through openings or connections provided for inspection or cleaning, safety valve, water column, water gage glass, or pressure gage?

It should be avoided as it could affect the operation of feeders, cut-offs, or the safety valve Signup and view all the answers

Why is a check valve installed near the boiler in the feedwater pipe?

To prevent backflow and keep the boiler from draining when the boiler feedwater pump is off Signup and view all the answers