10+ VVF Interview Questions and Answers

Angel supports various types of plumbing and fire pipe lines including hangers, clamps, and brackets.

• Angel supports hangers for vertical pipe lines

• Angel supports clamps for horizontal pipe lines

• Angel supports brackets for fire pipe lines

• Angel also provides custom solutions for unique pipe support needs

Check for fire alarm system in the accident location by following standard procedures.

• Check for visible fire alarm system devices such as pull stations, strobe lights, and horns.

• Ask witnesses or occupants of the building if there is a fire alarm system in place.

• Consult the building's floor plan or fire safety plan to locate the fire alarm system.

• Use a handheld fire alarm system detector to locate the system if necessary.

There are several types of pipes used in plumbing.

• Copper pipes

• PVC pipes

• PEX pipes

• Galvanized steel pipes

• Cast iron pipes

• Brass pipes

• Stainless steel pipes

Water pressure can be checked using a pressure gauge or by observing the flow rate.

• Use a pressure gauge to measure the water pressure at a specific point in the system

• Observe the flow rate of water from a faucet or showerhead to determine if the pressure is too low

• Check for leaks or blockages in the system that may be affecting the pressure

• Consult with a plumber or water utility company if the pressure is consistently low or high

There are two types of fire pumps: centrifugal and positive displacement.

• Centrifugal pumps use a rotating impeller to create a flow of water, while positive displacement pumps use a piston or diaphragm to move water.

• Centrifugal pumps are more commonly used in fire protection systems.

• Positive displacement pumps are typically used in high-rise buildings or where water pressure is low.

• Examples of centrifugal pumps include end suction pumps and split case pumps.

• Examples of positi...read more

A booster pump increases water pressure in a system, while a jockey pump maintains pressure within a certain range.

• Booster pumps are used to increase water pressure in a system, such as in a high-rise building or a fire sprinkler system.

• Jockey pumps are used to maintain pressure within a certain range, typically in a fire sprinkler system.

• Booster pumps are typically larger and more powerful than jockey pumps.

• Jockey pumps are often used in conjunction with a larger booster pum...read more

The fire system is a set of equipment and procedures designed to detect and extinguish fires in a building.

• The fire system includes fire alarms, sprinklers, fire extinguishers, and emergency lighting.

• It is important to regularly test and maintain the fire system to ensure it is functioning properly.

• The fire system should be clearly marked and easily accessible in case of an emergency.

• Training on the proper use of the fire system should be provided to all employees.

• Examples of...read more

There are four types of sprinkler systems: wet pipe, dry pipe, pre-action, and deluge.

• Wet pipe sprinkler system is the most common type and is filled with water.

• Dry pipe sprinkler system is filled with pressurized air or nitrogen and water is released when the sprinkler head is activated.

• Pre-action sprinkler system is a combination of wet and dry pipe systems and requires two triggers to activate.

• Deluge sprinkler system releases a large amount of water at once and is typicall...read more

PVC and GI pipes differ in material, cost, durability, and usage.

• PVC pipes are made of plastic while GI pipes are made of galvanized iron.

• PVC pipes are cheaper than GI pipes.

• GI pipes are more durable and can withstand higher pressure than PVC pipes.

• PVC pipes are commonly used for water supply and drainage systems while GI pipes are used for gas and oil pipelines.

• PVC pipes are easier to install and maintain than GI pipes.

NRV stands for Net Realizable Value and is used to determine the value of inventory or assets that can be sold.

• NRV is calculated by subtracting the estimated costs of completion and disposal from the estimated selling price.

• It is used to determine the value of inventory or assets that can be sold.

• NRV is important for financial reporting and tax purposes.

• For example, if a company has inventory worth $10,000 but it will cost $2,000 to sell it, the NRV would be $8,000.