Book 1: 6-19 - Introduction to Thermoil Heaters & Systems

Question 1

Clean steam may be used in:

Select one:

A. Oil refineries
B. Steam cleaning
C. Humidification systems
D. Gas plants
E. Chemical processes

Answer 1

C. Humidification systems

Question 2

HRSG is the acronym for:

Select one:

A. High recovery system grader
B. Hot recovery system generator
C. Heat recovery steam generator
D. Hot radiation steam generator
E. Heavy radiation steam grader

Answer 2

C. Heat recovery steam generator

Question 3

Clean steam may be used in:

Select one:

A. Oil refineries
B. Chemical processes
C. Gas plants
D. Steam cleaning
E. Sterilization systems

Answer 3

E. Sterilization systems

Question 4

Hot oil circulating pumps:

Select one:

A. Love type pumps
B. Must be capable of temperatures above 500°C (932°F)
C. Need not be kept hot if on standby
D. Are positive displacement units
E. Are usually single stage centrifugal units

Answer 4

E. Are usually single stage centrifugal units

Question 5

A hot oil heating system is similar in principle to:

Select one:

A: A fire tube boiler burner
B. An oil refinery
C. A condensate return system
D. A steam heating system
E. A hot water heating system

Answer 5

E. A hot water heating system

Question 6

On the fuel gas system to a hot oil heater, the acronym, PRV, stands for:

Select one:

A. Primary regulating valve
B. Primary relief valve
C. Pressure restricting valve
D. Pressure regulating valve
E. Pressure relief valve

Answer 6

D. Pressure regulating valve

Question 7

Oils intended for use as heat transfer fluid in a hot oil system should:

Select one:

A. Resist thermal breakdown at low operating temperatures
B. Have a high viscosity
C. Posses low heat transfer characteristics
D. Be non-corrosive to metals used in the system
E. Have a high vapour pressure at operating temperature

Answer 7

D. Be non-corrosive to metals used in the system

Question 8

Oils intended for use as heat transfer fluid in a hot oil system should:

Select one:

A. Have a high vapour pressure at operating temperature
B. Be corrosive to metals used in the system
C. Have a low viscosity
D. Possess low heat transfer characteristics
E. Resist thermal breakdown at low operating temperatures

Answer 8

C. Have a low viscosity

Question 9

Flanges used in hot oil systems should be raised face and suitable _____ gaskets should be used.

Select one:

A. Metallic
B. Cork
C. Garlock
D. Graphite/asbestos
E. Rubber

Answer 9

A. Metallic

Question 10

While the hot oil heater refractory is being dried out the oil circulating in the tubes should be limited to a temperature of not more than ______ per hour.

Select one:

A. 35°C
B. 30°C
C. 55°C
D. 25°C
E. 60°C

Answer 10

C. 55°C