Year 2 Exam Study Guide — master what the exam actually tests, concept by concept.
Building codes, fire codes, and workplace regulations define the minimum standards that protect occupants and workers. These aren't guidelines — they're legal requirements. Knowing your applicable codes means fewer failed inspections, less rework, and a professional reputation that lasts.
Expansion joints: allow ~0.5" movement per 100 feet; critical in long runs. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Economic thickness: balance insulation cost vs. annual savings; payback typically 1-3 years. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Cryogenic: multi-layer insulation, vacuum spaces minimize conduction/convection. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Vessel insulation: blankets secured with straps; access doors insulated separately. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Structural calculations, material quantities, load calculations, and slope determinations are all part of journeyperson knowledge. These questions test your ability to move between units, apply geometric principles, and size materials correctly for the application.
Steam trace: parallel small-diameter tube supplying heat; electric heating also used. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Construction materials have specific strengths, limitations, and proper applications. Choosing the wrong adhesive, fastener, or structural member isn't just a quality issue — it can be a structural failure waiting to happen. Know your materials.
Materials: mineral wool (1200°F), fiberglass (acoustic), rubber foam (cryogenic), rigid foam. Material selection directly affects performance, code compliance, and longevity. Using the wrong type can fail an inspection or create a hazard down the line.
Thickness: economic thickness = pipe loss + insulation cost balance; energy saved vs. cost. Memorize this formula and practise substituting values — exam questions often give you three variables and ask you to solve for the fourth.
economic thickness = pipe loss + insulation cost balance
Jackets: protect insulation; aluminum (cost-effective), stainless (corrosive areas), PVC (chemical). Material selection directly affects performance, code compliance, and longevity. Using the wrong type can fail an inspection or create a hazard down the line.
Surface temp limits: OSHA ~140°F contact risk; thick insulation needed for high-temp systems. On the job, a solid grasp of this concept means faster decisions, fewer errors, and work that passes inspection the first time.
Lagging: sections assembled around pipe, strapped at intervals; seamless coverage. Safety regulations exist because the consequences of ignoring them are severe — injury, death, or legal liability. Know these requirements the way you know your own name.
All 10 exam concepts from this guide — test your recall before you sit the exam.