During shutdown, oil heater pilots and main burners are checked for
a) setting
b) temperature
c) pressure
d) cleanliness
e) flame pattern
Answer: D
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Power Engineering Chapter 142
- It is important to drain an hot oil heater prior to attempting a radiographic inspection, because
- Coke deposits on the inner walls of a heater tube produce __________ when the tube is tapped lightly with a hammer?
- In order not to be harmful to the metals used in hot oil systems the thermal fluid must
- Vapour bubbles in a pump can cause the pump to
- Hot oil high temperature (TSDH1) shutdown switches are installed on
- The safety valve discharge on a hot oil system returns to
- How far from a furnace heater dike is the drain pit located?
- Temperature rise in a hot oil system during the period that the refractory is drying out is allowed at a rate of
- Small diameter pipe used in building hot oil systems is
- To avoid start-up difficulties in cold weather a thermal fluid must have
- A hot oil pump suction is located
- A non-metallic part of a mechanical seal might be made from
- The approximate efficiency of a hot oil radiant heater is
- The most important piece of equipment of a hot oil system is
- The gas burners of a horizontal rectangular direct-fired oil heaters, are located
- The convection tubes of a typical up-draft model fired heater are located in the
- The most typical fired heater model is the
- The most commonly applied oil heater, is the combination convection and __________ type heater because of its efficiency.
- The __________ type tubes have fins on their outer surfaces.
- Extended type tubes used with oil heaters are tubes
- In hot oil heaters, hot gases moving through the furnace transfers the heat to
- In order to keep some hot oil flowing backwards through a standby pump and around the discharge check valve, it is important that the _______ valve of the standby pump be left open.
- Hot spots on the exterior metal covering of a hot oil heater may indicate that:
- Convection type hot oil heaters have an approximate efficiency of: