Free F60 Torch Operations & Combustibles Questions and Answers 1 — Questions and Answers
Question 1: An F-60 Fire Guard is inspecting gas cylinders before torch operations begin. Which of the following is an unacceptable condition that requires immediate correction?
- Oxygen and acetylene cylinders are stored 10 feet apart.
- A wrench is kept on the spindle of the acetylene cylinder valve during use.
- The control valve on an oxygen cylinder has oil and grease on it. (Correct answer)
- Empty cylinders are marked with 'MT' and stored separately from full cylinders.
Correct answer: The control valve on an oxygen cylinder has oil and grease on it.
FDNY regulations strictly prohibit the presence of oil or grease on oxygen containers, valves, regulators, or any related apparatus. Oxygen can react violently with hydrocarbons like oil and grease, creating a significant fire or explosion hazard. Such equipment must not be handled with oily hands or greasy tools.
Question 2: A torch operator needs to test a fuel gas hose for leaks. Which of the following methods is the only one approved by the FDNY for this purpose?
- Applying a small, controlled flame from a lighter to the connections.
- Submerging the entire hose in a bucket of water to look for bubbles.
- Spraying the hose and connections with a soapy water solution. (Correct answer)
- Listening for a hissing sound while slightly opening the cylinder valve.
Correct answer: Spraying the hose and connections with a soapy water solution.
Using a flame to test for flammable gas leaks is extremely dangerous and strictly forbidden. The approved and required method is to use a soapy water solution, which will form bubbles at the site of any leak.
Question 3: During a pre-hot work check, a Fire Guard notes that a torch-applied roofing operation is planned for a roof constructed of combustible wood planking. What is the correct action according to FDNY regulations?
- Ensure at least two 3-A 40-B:C fire extinguishers are present.
- Proceed with the operation as long as the wood is dampened first.
- Verify that extra fire-resistant blankets are available to cover the area.
- Prohibit the operation from starting as it is unlawful. (Correct answer)
Correct answer: Prohibit the operation from starting as it is unlawful.
FDNY rules explicitly state that it is unlawful to conduct torch-applied roof system operations on roofs constructed of combustible materials. This is a prohibited act to prevent severe fire hazards.
Question 4: When torch operations are discontinued for a lunch break lasting one hour or more, what is the required procedure for the gas supply?
- The torch operator may leave the torch valve open but must close the cylinder valve.
- The torch valve must be closed, but the cylinder can remain pressurized.
- The torch valve must be closed and the gas supply to the torch must be completely shut off at the cylinders. (Correct answer)
- The Fire Guard can take temporary control of the lit torch while the operator is away.
Correct answer: The torch valve must be closed and the gas supply to the torch must be completely shut off at the cylinders.
For any discontinuance of hot work for a period of one hour or more, regulations require that the torch valve be closed and the gas supply completely shut off at the source (the cylinders). This prevents accidental gas leaks and potential ignition.
Question 5: Which of the following is a mandatory storage requirement for compressed gas cylinders when they are not in use on a job site?
- Stored in a horizontal position to prevent tipping.
- Kept within 10 feet of a heat source for optimal pressure.
- Protected from the direct rays of the sun. (Correct answer)
- Grouped together with all gas types for easy inventory.
Correct answer: Protected from the direct rays of the sun.
Compressed gas cylinders not in use must be protected from the sun and other sources of heat. High temperatures can cause the pressure inside the cylinder to rise to dangerous levels. They must also be stored upright and secured.
Question 6: In a scenario where hot work is being performed, what is the relationship between oxygen and fuel gas cylinders regarding their proximity to the immediate work area?
- They must be placed directly next to the operator for quick adjustments.
- They must be located at a sufficient distance to be protected from heat, sparks, and slag. (Correct answer)
- Oxygen cylinders should be close, but fuel gas cylinders must be at least 35 feet away.
- Both cylinders must be stored in a separate, locked room during operation.
Correct answer: They must be located at a sufficient distance to be protected from heat, sparks, and slag.
To prevent accidental heating or ignition, both oxygen and fuel gas containers must be located a safe distance away from the hot work area. This protects them from potential hazards like heat from the operation, flying sparks, or molten slag.
Free F60 Torch Operations & Combustibles Questions and Answers 1
An F-60 Fire Guard is inspecting gas cylinders before torch operations begin.
Which of the following is an unacceptable condition that requires immediate correction?