Safety, Tools, and Job-Site Practices
Job-Site Safety
Plumbing work involves hazards from confined spaces, trenching, soldering, and power tools. Candidates must know the basics of personal protective equipment, lockout/tagout, and confined-space entry rules. Questions test trench shoring, ventilation when soldering, and safe handling of gas and chemicals.
Tools and Techniques
Candidates should know the purpose of common tools: pipe cutters, reamers, wrenches, press tools, and testing equipment. Questions test proper tool use, such as reaming copper before soldering, and the risks of using the wrong tool for the material.
Testing and Documentation
Pressure testing (water or air) verifies joints. Questions test test pressures, duration, and documentation. Safety during testing matters: air testing stores energy and requires precautions.
Rule of Thumb
If a question describes a confined space or a trench, the answer involves shoring, ventilation, and never entering alone. If a question describes a joint leak, the answer involves re-testing after repair and documenting the result.
Worked Example
A crew is soldering in a basement with poor ventilation. The fix is to ventilate the space and use appropriate PPE, and to keep flammables away from the torch.