HG-614 Boiler Rules Quiz

What is the purpose of performing low water cut-off tests in heating boiler and power boiler service?

To determine the cause of the low water condition
To test the frequency and procedures of low water cut-offs
To check if the boiler shuts off rapidly when the float chamber is drained (correct)
To isolate the feedwater and allow the boiler to steam off water

What are the recommended test methods for low water cut-offs in heating boiler and power boiler service?

Determining the cause of the low water condition
Draining the float chamber rapidly to check if the boiler shuts off
Isolating the feedwater and blowing off the boiler (correct)
Allowing the boiler to steam off water

What is the role of the operator in addressing a low water condition in a boiler?

Determine the cause of the low water condition and correct it before restarting the boiler (correct)
Isolate the feedwater and allow the boiler to steam off water
Reset the cut-off and restart the boiler immediately
Conduct rapid draining of the float chamber

Where can one find information about low water cut-off tests and frequencies in heating boiler and power boiler service?

Part B, Unit 4, Chapter 4 Operational Checks (A) Signup and view all the answers

According to CSA B51 6.3.2.1, how many low-water fuel cut-off devices should steam boilers not continuously attended by a certified operator be equipped with?

At least two low-water fuel cut-off devices (A) Signup and view all the answers

What does the statement 'cannot be rendered inoperative' mean in the context of low water cut-off devices?

Devices should be installed so that they cannot be made inactive (C) Signup and view all the answers

Why may momentary contact switch be installed in parallel to the low water cut-off switch for large capacity boilers?

To avoid the need for continuous operation of the boiler (D) Signup and view all the answers

What takes precedence over the ASME codes in Canada regarding boilers and pressure vessels?

CSA B51 Boiler, Pressure Vessel, and Pressure Piping Code (A) Signup and view all the answers

Why should no switches be installed that render the low water cut-off inoperable according to CSA B51 6.3.2.1?

To ensure safety and prevent accidents (A) Signup and view all the answers

What is required for large capacity boilers according to CSA B51 6.3.2.1?

Continuous operation without any breaks (B) Signup and view all the answers

What is the minimum heat input, in Btu/hr, that requires a flow-sensing device in a coil-type boiler or a watertube boiler?

400,000 Btu/hr (A) Signup and view all the answers

In which jurisdictional code are the flow-sensing device requirements similar to those in CSA B51?

ASME CSD-1 (D) Signup and view all the answers

What is the capacity (in boiler horsepower output) for boilers that ASME CSD-1 addresses?

Up to 300 boiler horsepower output (A) Signup and view all the answers

How many automatic low-water fuel cutoffs are required for each automatically fired, low-pressure steam boiler according to ASME CSD-1 Part CW120?

Two (C) Signup and view all the answers

Where should the low-water fuel cutoff be located for hot-water boilers as per ASME CSD-1 Part CW-130?

Above the lowest safe permissible water level (B) Signup and view all the answers

What must be avoided when connecting cut-off devices to a water column for high-pressure steam boilers according to ASME CSD-1 Part CW-140?

Common water connection (A) Signup and view all the answers

What is the main purpose of a low-water fuel cutoff for hot-water heating boilers as per ASME CSD-1 Part CW-130?

To prevent startup and cut off the boiler fuel supply automatically (B) Signup and view all the answers

What is the requirement for a means of testing the low-water cut-offs of hot water boilers according to Part HG-614?

Resorting to draining the entire system (B) Signup and view all the answers

What is the minimum capacity defined for a boiler in CSA B51?

It does not specify a minimum capacity (A) Signup and view all the answers

What is required to be installed at the hot water outlet according to CSA B51?

Flow-sensing device (A) Signup and view all the answers

What does ASME CSD-1 address?

Automatically fired boilers with capacities up to 300 boiler horsepower output (D) Signup and view all the answers

According to CSA-B51 6.3.2.2, which statement about low-water fuel cut-off devices for hot water boilers is true?

They should be installed so that they can be tested under operational conditions. (C) Signup and view all the answers

According to ASME BPVC I, what is the requirement for low water fuel cut-off devices on fuel-fired or waste heat fired boilers?

Not required on fuel-fired or waste heat fired boilers but required on electric boilers. (D) Signup and view all the answers

Under what conditions may some hot water boilers be exempted from low-water fuel cut-off device requirements according to CSA B51 6.2.2.3?

If they use forced circulation to prevent overheating. (C) Signup and view all the answers

Under what circumstance does ASME BPVC I permit the use of a low water cut-off as an alternative to a secondary means of feeding water?

Only for boilers that are not fired by gaseous, liquid, or solid fuels in suspension. (D) Signup and view all the answers

What is the requirement for electric boilers of the resistance element type according to ASME BPVC I?

To be equipped with an automatic low-water cut-off and pressure and/or temperature controls. (A) Signup and view all the answers

What is the requirement for heating surface area in ASME BPVC I regarding the number of means of feeding water?

To have two means of feeding water for boilers with more than 47 m2 (500 ft2) of heating surface area. (B) Signup and view all the answers

What does ASME BPVC IV prohibit regarding the installation of low-water fuel cut-off devices in the interconnecting piping?

The installation of shutoff valves in the interconnecting piping. (B) Signup and view all the answers

What does ASME BPVC IV require regarding the location of the automatic low-water fuel cutoff in steam heating boilers?

To be located above the highest visible part of the water gage glass. (D) Signup and view all the answers

What is recommended by ASME VII regarding operating procedures when an automatic low water boiler trip is equipped with a water column?

To develop suitable operating procedures to prevent tripping the boiler while determining if the water column is functional and in good operating condition. (D) Signup and view all the answers