PCS Cheat Sheet 2026

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

1. Which type of personal protective equipment (PPE) is essential for spray coating operations? → Respirator
2. In cathodic protection (CP) systems, what is the minimum protective potential (Cu/CuSO4 reference) for buried or submerged steel as specified by NACE SP0169? → -0.85 V
3. A specification requires 'ASTM D4285' testing before coating application. What does this test check for? → Oil and water contamination of compressed air
4. What code compliance requirement applies to equipment operation? → All work must comply with applicable local, state, and national codes
5. A coating specification calls for a minimum 'overlap' on stripe coats. What is the purpose of a stripe coat? → To ensure edges, welds, and corners receive adequate film build
6. When a specification requires 'inorganic zinc silicate primer,' what unique curing mechanism does this coating use? → Moisture-initiated silicate polymerization
7. A coating specification requires a 'holiday-free' lining. Which test method is used to detect pinholes and voids in an immersion-service lining? → High-voltage spark testing
8. How should equipment be maintained for material selection operations? → Follow manufacturer-recommended preventive maintenance schedules
9. Which condition most commonly causes pinholes (holidays) to form in an applied coating? → Solvent entrapment during curing
10. What environmental protection measure applies to material selection? → Proper handling, storage, and disposal of materials according to environmental regulations
11. What is the main purpose of a visual inspection in coating quality control? → Identify surface defects
12. What environmental protection measure applies to equipment operation? → Proper handling, storage, and disposal of materials according to environmental regulations
13. Sagging or runs in a freshly applied coating film are most commonly attributed to which cause? → Over-thinning of the coating or applying an excessive wet film thickness
14. Alligatoring (crocodile cracking) of a coating surface is typically caused by which condition? → Application of a hard topcoat over a soft, incompletely cured primer
15. What is the corrosion mechanism known as 'undercutting' in relation to coated steel? → Corrosion spreading laterally beneath the coating from a defect
16. Which type of coating failure is characterized by fine, shallow cracks that do not penetrate through the entire coating film thickness? → Checking
17. Cathodic disbondment of a protective coating is most commonly associated with which system? → Cathodic protection systems
18. When a coating specification calls for a 'DFT' of 3–5 mils, what does DFT stand for? → Dry Film Thickness
19. How should equipment be maintained for maintenance protocols operations? → Follow manufacturer-recommended preventive maintenance schedules
20. What inspection procedure is essential for equipment operation? → Systematic inspection following established checklists and standards
21. Why is it important to apply coatings in multiple layers? → Improves coating durability
22. When investigating a coating failure, what must be the first step before any remediation work begins? → Document and photograph the failure in detail
23. Which coating defect results from UV degradation of the organic binder, leaving loose pigment particles on the surface? → Chalking
24. What is the primary cause of osmotic blistering in coatings applied over steel in immersion service? → Water-soluble salts trapped under the coating film
25. Which regulatory agency oversees workplace safety in the protective coatings industry? → OSHA
26. What is the primary purpose of a primer in a coating system? → To improve adhesion
27. What inspection procedure is essential for material selection? → Systematic inspection following established checklists and standards
28. What does the pull-off adhesion test (ASTM D4541) specifically measure in a coating failure investigation? → Tensile strength of adhesion between coating and substrate
29. Zinc-rich primers provide corrosion protection to steel primarily through which mechanism? → Cathodic (sacrificial) protection by acting as the anode
30. What code compliance requirement applies to maintenance protocols? → All work must comply with applicable local, state, and national codes