Philadelphia Water Supply & Hydrants

In Philadelphia's water distribution system, what is the typical pipe size classification for secondary feeders?

What is the primary reason for the Philadelphia Fire Department's policy of limiting the number of turns on a low-pressure hydrant's operating stem?

What does the color of a low-pressure hydrant bonnet indicate in the Philadelphia Fire Department's color-coding system?

What is the main purpose of the 'Hydro-shield' hydrant wrench, despite the 'Hydro-shield' discharge caps being out of service?

During hydrant operation, at what point should a visual inspection inside the hydrant barrel be performed to check for debris?

What action should a fire department unit take upon encountering a non-functioning or missing hydrant in Philadelphia?

Why is it important to identify multiple hydrants during the size-up process at a fire scene?

What is the recommended minimum clearance of water above and below the hard suction strainer when drafting from a static water source?

What specific action should a DPOP take immediately after communicating water supply issues to the engine officer?

What is the correct procedure for priming a pump during drafting operations if the pump does not prime within 60 seconds?

What is the correct procedure for removing a standard hydrant discharge cap?

What is the most common source of supply water in the City of Philadelphia used for firefighting?

What unique feature is characteristic of hydrants of the 'Dry Barrel' variety used in Philadelphia, and why is this design employed?

What is the primary function of hard suction hose in firefighting operations, particularly on second alarm fires or greater?

What is the main operational difference between a standard low-pressure hydrant and a 'Super Hydrant'?

Why are the water maps prepared in numerical order and plotted within a two-block radius of each firebox number?

What is the primary design feature that distinguishes a hydrant equipped with a Center Compression Lock (CCL) from a standard Low-Pressure Hydrant (LPH)?

What is the first step in hydrant operation?

A fire pump in good working condition should be able to lift water how many feet in height?

What is the function of antifreeze, rubbing alcohol, and rock salt?

What is the purpose of installing locking stem configurations on fire hydrants?

What is the name of the Philadelphia thread?

What is drafting?

What is the correct procedure for opening a Philadelphia type hydrant?

How often should you replace the hydrants?

What is the purpose of Duffy lengths?

What does IDLH atmosphere stand for?

What size is a Transmission Main?

Where can I find information about a specific hydrant?

What does the orange color on a hydrant mean?

What is static pressure?

Why is important to have awareness of pressure readings on DPOP meter?

What should you do if pump cannot be primed within 60 seconds?

Why should smooth bore nozzles be used when feeding from a engine with a drafting operation?

When drafting, what should you do after you have achieved a discharge pressure recording between 50-100 PSI ?

Where do all the water hydrants come from in the City of Philadelphia?

How do Philadelphia fire fighter maintain prime?

What is the appropriate action if the center stem of a CCL hydrant has debris accumulated around it or is not properly seated?

When should you ensure that the CCL recessed stem is free-floating, seated properly, and clear of debris?

When another engine company needs to be supplied by your apparatus, what should you consider?

Considering the Philadelphia Fire Department's policy on hydrant operation, what is the primary rationale behind limiting the number of turns on a low-pressure hydrant's operating stem to a maximum of 12 full turns or 24 half-turns?

In the context of water supply for firefighting in Philadelphia, what is the significance of identifying secondary and tertiary water supply sources, beyond just the primary hydrant?

When drafting water from a static source, what is the most critical reason for maintaining a minimum clearance of 24 inches of water above and below the hard suction strainer?

Upon discovering a non-functioning or missing hydrant during initial size-up, what specific action should a fire department unit in Philadelphia immediately take, beyond reporting the issue to the Water Department?

Considering the purpose of the 'Dry Barrel' hydrant design and Philadelphia's climate, what is the most critical operational consequence of a failure in the hydrant's draining mechanism after use?