3A2E3 C15 Obj 6

Fire Hydrants and Pumps

• Dry barrel hydrants are used in areas where the temperature may drop below freezing.
• Wet barrel hydrants are used in areas where temperatures remain above freezing.

Hydrostatic Pressure Test

• The purpose of the hydrostatic pressure test of the pump casing is to ensure the pump can withstand twice the maximum design working pressure.
• The minimum duration for maintaining twice the maximum design working pressure during the hydrostatic pressure test is not specified.

Annual Testing of Fire Pumps

• The purpose of the annual capacity testing of fire pumps is to ensure the pump can meet its rated capacity.
• The minimum requirement for testing fire pumps annually is not specified.
• The test line on the pump discharge is used during annual testing to measure the pump's capacity.

Detecting and Thawing Frozen Hydrants

• The recommended method for detecting freezing in hydrants is to use a pressure gauge or thermometer.
• The recommended method for thawing a frozen hydrant is not specified.

Dry Barrel Hydrants

• The drain valve at the base of the barrel in the dry barrel hydrant is used to drain water from the hydrant to prevent freezing.

Purpose of Annual Testing

• The purpose of the annual testing of fire pumps is to ensure the pump is functioning properly and can meet its rated capacity.
• The annual testing of fire pumps is NOT used to determine the pump's flow rate.