| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. MATERIAL VERIFICATION | |||
| A1 | Primer product approved: Type, grade, batch verified against specification; test cert available Acceptance: Product cert available; batch within shelf-life; coverage rate verified from label | Cl. 302 — Material approval | |
| A2 | Primer quality verified: Viscosity, adhesion, coverage rate per IS standard; storage conditions OK Acceptance: Product undiluted (if specified); no lumps/sediment; color uniform; ready for use | Cl. 302 — Quality check | |
| B. APPLICATION PREPARATION | |||
| B1 | Surface preparation complete: Surface clean, dry, defects filled, ready for primer Acceptance: Surface prep sign-off available; moisture <10%; visual inspection confirms ready state | Cl. 302 — Prerequisite check | |
| B2 | Weather conditions suitable: Ambient 10-35°C, humidity <85%, no rain forecast in next 24 hrs Acceptance: Temperature logged; humidity confirmed; dry application conditions; rain protection available | Cl. 302 — Environmental conditions | |
| B3 | Equipment ready: Brushes, rollers, trays clean; application tools in good condition Acceptance: Tools clean, dry; bristles intact; roller nap 6-8mm for primer; no old paint residue | Cl. 302 — Tool readiness | |
| C. PRIMER APPLICATION | |||
| C1 | Coverage rate verified: Primer coverage rate per label (typically 8-12 m²/liter); area×rate=quantity Acceptance: Coverage rate documented; quantity per m² calculated; actual consumption logged | Cl. 302 — Material control | |
| C2 | Primer applied uniformly: Full coverage, no thin spots, no missed areas; consistent color across surface Acceptance: Visual inspection shows uniform color; straightedge test shows no bare spots; 100% coverage | Cl. 302 — Application control | |
| C3 | Application thickness: Wet thickness 80-120 microns typical; dry film thickness 20-40 microns Acceptance: Wet thickness measured immediately; DFT checked after drying per spec | Cl. 302 — Thickness control | |
| C4 | Edges and corners adequately filled; no thick runs or sags; application technique adequate Acceptance: No drips >2mm; corners filled; brush marks minimal; smooth finish | Cl. 302 — Quality application | |