Free template
Breakdown / fault report form
Capture the fault, response times, root cause, action taken and parts used.
Good breakdown records are the raw material for reliability work: they feed MTBF and MTTR, show repeat failures and justify spares. Record the root cause, not just "replaced part".
Use the MTBF and downtime cost calculators with the data.
Templates are a starting point. Adapt them to your site, your equipment and your procedures, and have them reviewed by a competent person.
