* Safety: This is a major component. Expect questions on PPE (personal protective equipment) requirements, respiratory protection, confined space entry procedures, hazard communication (SDS/MSDS), lockout/tagout, fall protection, fire prevention, and emergency procedures specific to sandblasting.
* Equipment: You'll be tested on the different types of sandblasting equipment (abrasive blasting equipment, pressure pot systems, siphon feed systems, etc.), their operation, maintenance, and troubleshooting. Understanding the components of the equipment (hose, nozzle, air compressor, abrasive delivery system) and their function is crucial.
* Abrasives: Knowledge of different types of abrasives (sand, glass beads, walnut shells, etc.), their applications, and selection based on the material being blasted is essential. You'll likely be asked about the properties of different abrasives and their suitability for various applications.
* Surface Preparation: Questions will cover the proper techniques for surface preparation before and after sandblasting, including cleaning, masking, and inspection. Understanding the different blasting techniques (e.g., close-range blasting vs. long-range blasting) and their applications is important.
* Environmental Concerns: Questions about environmental regulations, waste disposal, and the impact of blasting on the environment are likely.
* Inspection and Quality Control: Understanding how to inspect the blasted surface for quality and identify defects is a key element.
* Mathematical Calculations: While not the primary focus, you might encounter some basic math problems related to calculating abrasive flow rates or surface areas.
The questions will likely be a mix of multiple-choice, true/false, and possibly some short-answer or fill-in-the-blank questions. The exact format and specific topics covered might vary slightly depending on the specific version of the test and the certifying organization. Refer to your NCCER training materials and study guide for the most accurate and up-to-date information.