JOTAIN MATERIALS | GRINDING ROD WEAR OBSERVATION SHEET
Revision: 7 September 2026
Companion article: https://jotainmaterials.com/technical-resources/grinding-rod-wear-patterns/

Use within the plant's approved shutdown, isolation, lifting and handling procedure.
Record observations first. This blank sheet does not set removal limits or diagnose cause.
Enter "unknown" for missing identity, orientation or operating data.

1. INSPECTION
Plant / mill tag:
Date / shift / inspection or shutdown reason:
Observer / maintenance contact:
Ore or feed campaign / operating period reviewed:
Approved procedure / inspection location:

2. CHARGE AND IDENTITY
Current rod diameter(s) and length(s) / units:
Supplier and grade where known:
Heat / treatment lot / bundle / delivery date where known:
Old and new rod mix / unidentified material:
Recent rod additions and removals / dates / mass or count:
Charge and mill-log file references:

3. INDIVIDUAL ROD OR SAMPLE (REPEAT FOR EACH SELECTED ROD)
Rod / sample ID:
Ordinary example or unusual condition:
Recovery location:
Feed / discharge orientation known or unknown:
Full-length photo / scale / file reference:
First-end and second-end photographs / file references:
Rod length / units / endpoint definition:
Diameter position from identified end | direction A | direction B | units:
Near first end:
Middle:
Near second end:
Additional positions / reason:
Roll-check support and setup / assessed length:
Observed high point / gap / units / orientation:
Wear pattern, rubbing, flattening or end damage:
Broken or short pieces / count or mass / units:
Fracture photographs and retained-piece IDs:
Handling or measurement limitations:

4. COMPARISON ACROSS THE REMOVED CHARGE
Number of rods examined / selection basis:
Number with each observed pattern:
Patterns in other known lots or suppliers:
Ordinary comparison rods / photographs:
Unknown rod ages, mixed lots or other limits:

5. MILL CHANGES AND EVENTS
Feed size or ore campaign changes / dates:
Slurry, flow or solids changes / dates:
Speed, throughput or product-target changes / dates:
Charge, make-up or removal practice changes / dates:
Liner, end geometry or discharge changes / dates:
Starts, stops, jams, tangling, handling or storage events / times:
Event-log and operating-data references:

6. NEXT CHECK AND HANDOFF
Observed condition:
Mill records to review:
Material or process-lot records to request:
Representative samples retained / storage reference:
Question for plant, supplier or laboratory:
Responsible person / due date:
Site removal or containment decision / procedure reference:
Follow-up result / supporting record / date:

Keep original photographs and the mill log with this sheet.
For fracture investigation, preserve representative pieces before cleaning, heating or cutting.