OIT Cheat Sheet 2026

The 30 highest-yield OIT facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. What role does continuing education play in Distribution Systems? → Keeping practitioners current with evolving best practices and new developments
2. Under OSHA's Hazard Communication Standard, what document provides first aid measures for a specific chemical? → Safety Data Sheet (SDS)
3. What is the function of a pressure relief valve in a pumping system? → To automatically release excess pressure and protect system components from overpressure
4. What does the term 'universal precautions' mean in workplace first aid? → Treating all blood and body fluids as potentially infectious
5. A spill of flammable solvent ignites in a process area. Which action is INCORRECT? → Open windows to ventilate the area
6. Which approach is most effective for problem-solving in Water Quality Testing? → Systematic analysis followed by evidence-based decision making
7. An operator suspects a coworker has fractured their wrist after a fall. The correct first aid action is to: → Immobilize the injury in the position found and seek medical care
8. Which approach is most effective for problem-solving in Distribution Systems? → Systematic analysis followed by evidence-based decision making
9. During a facility emergency, the Emergency Assembly Point (EAP) is primarily used to: → Account for all personnel after evacuation
10. Secondary containment for chemical storage at water treatment facilities is designed to hold at least what percentage of the largest container's volume? → 100%
11. A coworker's clothing catches fire. What is the correct response sequence? → Stop, drop, and roll — then cool burns with water
12. What is the purpose of a chemical feed day tank at a water treatment plant? → To hold a working supply of chemical solution and allow safe, controlled dosing
13. What is the primary purpose of standardized procedures in Safety and Regulations? → To ensure consistency, safety, and quality across all practitioners
14. What should you include in an emergency response plan for your workplace? → Detailed procedures for all types of emergencies, including evacuation routes.
15. What is the first step an operator should take when troubleshooting an equipment issue? → Refer to the equipment manual for troubleshooting guidance
16. What is static head in a pumping system? → The vertical elevation difference between the water source and the discharge point
17. When using an AED, what must you do immediately before delivering a shock? → Ensure no one is touching the patient
18. Which chemical is typically used at water treatment plants to raise the pH of finished water for corrosion control? → Sodium hydroxide (NaOH) or lime (Ca(OH)2)
19. When a chemical delivery is received at the treatment plant, what should the operator verify FIRST? → The chemical matches the purchase order, container labels, and SDS
20. What condition occurs when vapor bubbles form and collapse inside a pump due to low suction pressure? → Cavitation
21. Which approach is most effective for problem-solving in Safety and Regulations? → Systematic analysis followed by evidence-based decision making
22. What agency sets national drinking water standards in the United States? → EPA
23. What is a National Pollutant Discharge Elimination System (NPDES) permit used for? → Regulating the discharge of pollutants into waters of the United States
24. Under OSHA 29 CFR 1910.151, which facilities are required to have a person adequately trained in first aid on-site? → Facilities where a hospital or clinic is not in near proximity
25. Which symptom combination is most characteristic of heat stroke (not heat exhaustion) in an industrial worker? → Hot dry skin, confusion, and body temperature above 104°F
26. What is water hammer and what causes it? → Pressure surge caused by rapid change in fluid velocity, such as sudden valve closure
27. What should an operator do if they discover a safety hazard while operating equipment? → Report it immediately to a supervisor or safety officer
28. What does pump efficiency measure? → The ratio of hydraulic power output to shaft power input
29. How should you handle a burn that has been caused by contact with hot equipment? → Use a cold, running water to cool the burn for at least 10 minutes.
30. What is a Maximum Contaminant Level (MCL) in the context of drinking water regulations? → The highest permissible level of a contaminant in public drinking water