Key Points Flashcards
(23 cards)
Feedwater is water that is treated for use in a boiler. An accessory not directly attach to the boiler
FEEDWATER
The feedwater stop valve is used to isolate the feedwater line from the boiler.
The feedwater check valve allows feedwater to flow in one direction.
True
The condensate return tank is a boiler accessory that collects condensate returned from the boiler
True
A feedwater heater heats the water before it enters the boiler
True
Makeup water replaces lost water from steam leaks, blowdowns, and or other losses in the system
True
Makeup water is added from the city supply line using a manual or automatic makeup system
True
The automatic makeup water feeder must be blown down at least once a week to prevent buildup of sludge or sediment
True
A strainer protects the automatic makeup water feeder from scale or lime deposits from the city water
True
A feedwater regulator is a boiler accessory that maintains the NOWL in the boiler
True
The feedwater regulator is located at the NOWL and is connected to the boiler in the same manner as the water column and the low water fuel cutoff
True
A low water fuel cutoff shuts the burner OFF in the event of a low water condition
True
The ASME code requieres low pressure boilers to have at least one low water fuel cutoff
True
The low water fuel cutoff should be tested with an evaporator test at least once a month
True
The boiler operator must be present during a evaporator tes to carefully monitor the water level in the boiler, the water level must never fall out of sight in the gauge glass
True
Some states requiere that boilers be equipped with an auxiliary low water fuel cutoff
True
A feedwater pump provides feedwater under pressure to the boiler to maintain the NOWL in the boiler
True
A vacuum pump withdraws gases or vapors from a closed container and creates a vacuum in the container
True
A centrifugal pump has a rotating impellerinside a housing
True
A gear pump has two meshing gears inside a housing
True
A reciprocating pump has reciprocating pistons inside a cylinder
True
Common couses of pump problems include? Primming, cavitation, mechanical seals, and packing
True
A gate valve is a valve that stops or starts fluid flow by raising or lowering a gate into the valve passageway
True
The backlow preventer prevents the undesired flow of boiler water back to the city water supply
True
