Pipefitter/Steamfitter

Year 1 Exam Study Guide — the foundational knowledge every apprentice needs before advancing.

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12Topic Sections

48Key Concepts

0Flashcard Terms

Year 1Apprentice Level

Year 1 Exam Topics

Study each topic below — these are the core knowledge areas tested in Year 1. Build a solid foundation here before advancing to Year 2 material.

🔧Pipe Materials & Specifications

Carbon steel (ASTM A53/A106), stainless 304/316, copper (ASTM B88), CPVC/PVC
Schedule numbers define wall thickness; nominal pipe size (NPS) vs actual OD
ASTM vs ASME designations for pressure vessel applications
Pressure ratings and temperature derating curves

🔧Pipe Fittings

Elbows (45°/90°/long radius), tees (straight/reducing), reducers (concentric/eccentric)
Socket weld vs butt weld vs threaded applications
Fitting allowances must be added to pipe cut lengths
Pressure ratings and material compatibility

🔧Pipe Hangers & Supports

Variable spring hangers for thermal movement; rigid hangers for no-movement lines
Hanger spacing per MSS SP-58/69 standards
Spring cans calculated for operating weight
Installation and support point selection

📖Flanges & Gaskets

ASME B16.5 flange classes (150/300/600/900/1500/2500)
Raised face vs flat face vs RTJ gasket surfaces
Spiral wound gaskets for high temp/pressure applications
Bolt torque sequence (star pattern) for proper sealing

⚙️Pipe Joining Methods

Butt weld (full penetration), socket weld (fillet), threaded (NPT taper)
Grooved (Victaulic) and soldering (type L/K copper) techniques
Specific prep requirements for each joining method
Quality and inspection requirements per applicable codes

🦺Safety & PPE

Hot work permits required for welding/cutting operations
Steam burns — never stand at valve discharge
WHMIS for pipe dope, flux, solvents, and other materials
Confined space entry procedures and hazard awareness

Red Seal Exam Topics

Study each topic below — these are the core knowledge areas tested in Year 1. Build a solid foundation here before advancing to Year 2 material.

📖ASME B31.1 Power Piping

Governs steam, feedwater, drain lines in power plants
Hydro test at 1.5× MAWP with regulatory oversight
Required documentation: isometrics, weld maps, NDE reports
Design and operating pressure classifications

📖ASME B31.3 Process Piping

Governs chemical, petroleum, industrial process applications
Fluid categories (D, normal, high-pressure, high-purity)
Examination levels A, B, C, D for weld qualification
Design and operating parameters specific to process service

📖Steam Traps

Float & Thermostatic (F&T): continuous condensate removal
Thermodynamic (TD): disc opens and closes by pressure differential
Inverted bucket: riding on steam, dumps on condensate
Selection depends on pressure differential and condensate load

📖Expansion & Flexibility

Thermal expansion: carbon steel expands ~12mm per 10m per 100°C ΔT
Expansion loops, bellows, offset bends for movement absorption
Anchor and guide design critical for system integrity
Stress analysis and design calculations

📖Hydrostatic & Pneumatic Testing

Hydro preferred — less energy if failure occurs
Test pressure = 1.5× design for B31.1 and B31.3
Pneumatic at 1.1× design with extra precautions and controls
Hold time minimum 10 minutes; documentation requirements

📖Valve Types & Applications

Gate valve: fully open/closed only; globe: throttling control
Check: prevents backflow; ball: quarter-turn shutoff
Butterfly: large diameter low-pressure; safety/relief: set per code
Selection criteria based on service conditions

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