| S.No. | Checkpoint | IS Requirement | Status |
|---|---|---|---|
| A. AGGREGATE SOURCE AND SUPPLIER SELECTION | |||
| A1 | Step 1: Identify potential aggregate sources; verify quality consistency and reliability Acceptance: Sources evaluated for quality, production capacity, and delivery capability | Cl. 8 — Supplier qualification | OK NC NA HOLD |
| A2 | Step 2: Collect preliminary aggregate samples; conduct basic physical inspection Acceptance: Sample tested for grading, cleanliness, and deleterious materials | Cl. 9 — Pre-qualification testing | OK NC NA HOLD |
| A3 | Step 3: Approve suppliers based on test results and past performance Acceptance: Supplier approval documented; supply agreement finalized | Cl. 3 — Quality assurance | OK NC NA HOLD |
| B. AGGREGATE DELIVERY AND RECEIVING | |||
| B1 | Step 4: Aggregate delivery coordinated; QC team alerted; receiving checklist (QC-AGG-CHK-001) prepared Acceptance: Checklist ready; team scheduled; receiving area prepared | Cl. 9 — Inspection preparation | OK NC NA HOLD |
| B2 | Step 5: Transport vehicle inspected for cleanliness; previous cargo residue assessed Acceptance: Vehicle interior clean; no contaminants; suitable for aggregate transport | Cl. 8 — Transport quality | OK NC NA HOLD |
| B3 | Step 6: Delivery documents reviewed: docket, grade certificate, lab test results (if available) Acceptance: All documents present; batch number matches; quantities consistent | Cl. 9 — Documentation | OK NC NA HOLD |
| B4 | Step 7: Gross weight recorded at weighbridge; net quantity verified and documented Acceptance: Weighbridge ticket obtained; variance <±2% from invoice accepted | Cl. 9 — Quantity verification | OK NC NA HOLD |
| B5 | Step 8: Physical inspection of aggregates: size, color, contamination, moisture condition Acceptance: Visual inspection completed; no major defects; preliminary acceptance or hold issued | Cl. 9 — Quality inspection | OK NC NA HOLD |
| C. SAMPLE COLLECTION AND TESTING | |||
| C1 | Step 9: Representative samples collected from multiple locations in delivery Acceptance: 3-5 samples from top, middle, bottom; minimum 100kg composite sample | Cl. 9.1 — Sampling | OK NC NA HOLD |
| C2 | Step 10: Samples sealed in clean containers; labeled with batch, date, type, source Acceptance: Labels clear and permanent; chain of custody maintained | Cl. 9.1 — Sample preservation | OK NC NA HOLD |
| C3 | Step 11: Samples submitted to approved lab within 48 hours for testing Acceptance: Lab receipt documented; tests: grading (QC-AGG-TST-001), physical properties (QC-AGG-TST-002) | Cl. 9.1 — Lab submission | OK NC NA HOLD |