A boiler, hot-water heating and steam fitting contractor installs, services and repairs power boiler installations, hot-water heating systems and steam fitting, including fire-tube and water-tube steel power boilers and hot-water heating low pressure boilers,steam fitting and piping, fittings, valves, gauges, pumps, radiators, convectors, fuel oil tanks, fuel oil lines, chimneys, flues, heat insulation and all other equipment, including solar heating equipment, associated with these systems.
Authority cited: Sections 7008 and 7059, Reference: Sections 7058 and 7059 (Business and Professions Code)
Content of the Examination
The Boiler, Hot Water Heating and Steam Fitting (C-4) Examination is divided into six major sections. These sections are:
1. Job Planning/Estimating (14%)
2. Hydronic and Steam Systems (35%)
Boiler preparation and layout
Valve, piping, and hanger installation
Insulation and penetration sealing
3. Radiant Panel Systems (13%)
Piping and equipment installation
Temperature controls and wiring
System start up/testing
4. Heat Exchangers (5%)
Maintenance access requirements
Vacuum breakers and control valves
5. Service and Maintenance (18%)
System shut down
System cleaning and repair
Testing and start up
6. Safety (15%)
Identification of job site hazards
*Percentages are approximate*
The following questions are typical of the types of items that are on the examination. The correct answer is highlighted.
1. Which of the following precautions should be taken when welding near combustible materials?
have some sort of extinguishing device readily available
stay clear of the sparks
try to direct the sparks away from the combustible material
use a heat shield
2. What is the advantage of a gate valve over a globe valve?
a globe valve is more expensive
a gate valve provides straight through full flow
a gate valve is easier to install and service
a globe valve provides straight through full flow
3. What is one of the functions of a McDonnell-Millier feeder valve on a boiler?
to protect the boiler from firing at a low level condition
to protect the boiler from firing at a high level condition
to keep water at a very low level
to keep water at a very high level
*All questions are written and reviewed by licensed contractors who are actively working in the field*
American Society of Mechanical Engineers-Boiler and Pressure Vessel Code.