A.20
WORK PROCESS SCHEDULE
PIPEFITTER
O*NET-SOC CODE: 47-2152.01 RAPIDS CODE: 0414
ALTERNATE TITLES: REFRIGERATION, HEATING, AND AIR-CONDITIONING
This work process schedule is attached to and a part of the Apprenticeship Standards for the above identified occupation. This sequence of Related Classroom Instruction is competency based and will be offered as traditional classroom training or independent study, which may include electronic media.
1. TERM OF APPRENTICESHIP
The term of the occupation shall be four (4) years with an OJL attainment of 8000 hours supplemented by the required hours of related technical instruction.
2. RATIO OF APPRENTICES TO JOURNEYWORKERS
One (1) Apprentice to one (1) Journeyworker: one apprentice for the first skilled
journeyworker employed, and one additional apprentice for each additional skilled
journeyworker employed thereafter.
3. APPRENTICE WAGE SCHEDULE AND FRINGE BENEFITS
Apprentices shall be paid a progressively increasing schedule of wages and fringe benefits based on a percentage of the current journeyworker wage rate.
Term: 8000 Hours
1st 1000 hours = 50 percent of journeyworker’s rate and fringe benefit payments
2nd 1000 hours = 55 percent of journeyworker’s rate and fringe benefit payments
3rd 1000 hours = 60 percent of journeyworker’s rate and fringe benefit payments
4th 1000 hours = 70 percent of journeyworker’s rate and fringe benefit payments
5th 1000 hours = 75 percent of journeyworker’s rate and fringe benefit payments
6th 1000 hours = 80 percent of journeyworker’s rate and fringe benefit payments
7th 1000 hours = 85 percent of journeyworker’s rate and fringe benefit payments
8th 1000 hours = 90 percent of journeyworker’s rate and fringe benefit payments
4. SCHEDULE OF WORK EXPERIENCE (See attached Work Process Schedule)
Apprenticeship Committees may add to the work processes prior to submitting these
Standards to the appropriate Registration Agency for approval.
5. SCHEDULE OF RELATED INSTRUCTION (See attached Related Classroom Instruction
Outline)
Instruction can incorporate elements of both electronic media and traditional classroom including online training, distance learning, or independent study of established curriculum. Curricula modules are based on industry standardized applications of current construction practices. Modules are knowledge and skill based including a system for assessment. The assessment will include task objectives, procedures, review materials, and competency-based performance tests.
A20.1 – PIPEFITTER WORK PROCESS SCHEDULE
This instruction and experience shall include the following operations, but not necessarily in the listed sequence. Time spent on specific operations need not be continuous.
1. Use and care of tools and equipment and safety in welding, soldering, and brazing
2. Installation and service (compression systems)
a. Compressors-all types
b. Condensers-water, air, combinations, cascade, and evaporative
c. Receivers—tube type and shell
d. Evaporators-tube, fin, plate, brine, wet, and dry
e. Piping-all materials
3. Refrigerant controls
a. Expansion valves-hand, thermostatic, and automatic
b. Power elements, mechanism
c. Float controls-high side, low side, bucket and ball types
d. Capillary tubes-sizing and orifices
e. Check valves-solenoids, unloaders, pressures, and relief
f. Safety-hazards and controls
4. Motor controls (installation and service)
a. Thermostats
b. Pressure devices
c. Combinations, adjustment mechanism
d. Switches-relays, fuse elements, and protections and delays
5. Electric motors (service) up to 5 horsepower
a. Installation-alignment and load test
b. Lubrication
c. Field test
d. Servicing
6. Installation and service (absorption systems)
a. Solid absorbent
b. Liquid absorbent
c. Controls
7. Installation and service (hermetic, semi hermetic)
a. Dismantle and rebuild
b. Field test
c. Shop and field repair
d. Controls
8. Commercial refrigeration (various applications)
a. Condensing units—all typesBULLETIN 2012-04
b. Coils and evaporators—wet and dry
c. Heat exchanger—dryers and chemical reactivators
d. Surge tanks, separators, refrigerant piping and insulating
e. Vacuum and pressure test—evacuating and charging
f. Multiple installations—multitemp and freezers
g. Truck and transport refrigeration
h. Marine installation service
i. Cold storage and processing—maintenance and service
j. Assemblies—cooling towers and process water recovery
k. Icemakers, brine chillers
9. Installation and service (air conditioning systems)
a. Humidifiers and dehumidifiers
b. Filtering and air cleaning equipment
c. Circulating equipment—fans, natural and controls
d. Cooling equipment
e. Packaged units—combinations, single, and multiple
f. Cooling towers—water recovery and evaporator and air-cooled condensers
10. Installation and service (heating equipment)
a. Furnaces—boilers (round, square, and sectional)
b. Fuel burners—stokers, oil burners, gas burners, and electric
c. Unit heaters (blowers), all types
d. Packaged units—multiple, combination, and single
e. Safety—hazards and controls
11. Installation and service (fuel-burning equipment)
a. Oil burners—piping, tank and controls
b. Gas burners—adjustments and controls
c. Stokers—hopper, bin feed, and controls
d. Electric heaters—controls
e. Safety—hazards and controls
12. Boiler room piping (service and installation)
a. Heaters
b. Circulators—flow control and regulating valves
c. Pumps—condensers, P.R. valves, tank, and blowdowns
d. Expansion loops—joints, anchors, and boiler trim
e. Safety—hazards and controls
13. Installation (heating systems)
a. Hot water—one-pipe forced circulation
b. Hot water—two-pipe forced circulation
c. Steam—one-pipe, two-pipe vapor and vacuum systems
d. Installation panels—coils, blowers, rods, convectors, etc.
A20.2 – PIPEFITTER RELATED CLASSROOM INSTRUCTION
Note: Due to regional and local code differences and climate conditions, duration of instructional competencies/modules are suggested estimates only.
Modules:
- Basic Safety 15
- Introduction to Construction Math 15
- Introduction to Hand Tools 10
- Introduction to Power Tools 5
- Introduction to Blueprints 7.5
- Basic Rigging 20
- Pipefitting Hand Tools
- Pipefitting Power Tools
- Threaded Pipe Fabrication
- Ladders and Scaffolds
- Motorized Equipment
- Excavations
- Underground Pipe
- Intermediate Excavations
- Underground Pipe Installation
- Drawings and Detail Sheets
- Piping Systems
- Pipefitting Trade Math
- Socket Weld Pipe Fabrication
- Butt Weld Pipe Fabrication
- Rigging
- Pipe Hangers and Supports
- Advanced Blueprint Reading
- Standards and Specifications
- Advanced Trade Math
- Motorized Equipment
- Introduction to Aboveground Pipe Installation
- Identifying and Installing Valves
- Field Routing and Vessel Trim
- Spring Can Supports
- Testing Piping Systems and Equipment
- Basic Plumbing
- Planning Work Activities
- Advanced Pipe Fabrication
- Performing NDE Testing
- Stress Relieving and Aligning
- Steam Traps
- In-Line Specialties
- Special Piping
- Hot Taps
- Maintaining Valves
*DOL apprenticeship program standards recommend 144 hours related instruction per level and/or year.
