Free S-13 Valve Types, Sealing/Locking Requirements, and Normal Operating Positions Questions and Answers

Question 1

What is the normal operating position for a control valve in a standpipe system?

Accepted Answer

Fully open

Answer

Control valves must be kept in the fully open position to ensure an unobstructed water supply is available to the standpipe system at all times. This allows for immediate use by firefighters or building occupants. Any other position would restrict flow and render the system ineffective.

Question 2

According to FDNY regulations, which of the following is required to secure a standpipe system control valve in its normal open position?

Accepted Answer

An FDNY-approved locking device or seal

Answer

To prevent unauthorized or accidental closing, all control valves must be sealed or locked in the open position using a method approved by the FDNY. This ensures the integrity and readiness of the standpipe system. Standard padlocks or temporary ties are not sufficient.

Question 3

An OS&Y valve is in the open position when:

Accepted Answer

The stem is raised and visible.

Answer

An OS&Y (Outside Stem and Yoke or Outside Screw and Yoke) valve provides a clear visual indication of its position. When the stem is raised and visible outside the valve body, the valve is open; when the stem is flush or not visible, it is closed.

Question 4

What is the primary purpose of a check valve in a standpipe system?

Accepted Answer

To allow water to flow in only one direction.

Answer

A check valve is a one-way valve that prevents the backflow of water. In a standpipe system, it ensures that water from the Fire Department Connection (FDC) flows into the system and not back out, and it prevents water from the primary supply from flowing out the FDC.

Question 5

A Post Indicator Valve (PIV) is typically found where?

Accepted Answer

Outside the building, controlling the underground water main to the system.

Answer

A Post Indicator Valve (PIV) is a type of control valve located outside the building, usually in the yard or parking area. It controls the underground water supply main to the building's fire protection system and provides a clear visual indication ('OPEN' or 'SHUT') of the valve's status above ground.

S-13 - Certificate of Fitness for Citywide Standpipe Systems Practice Test

S-13 - Certificate of Fitness for Citywide Standpipe Systems Practice Test

Free S-13 Valve Types, Sealing/Locking Requirements, and Normal Operating Positions Questions and Answers