Maintenance classification table

"Category","Trigger or boundary","Required record","Status or qualification","Source"
"Edition","PTD-ARC-2018-002","Maintenance classification table","Reconstructed edition 2026-10-16; version 2.0","Original archive date 2018-03-26"
"Basis","Reconstructed technical register","Categories assembled from retained project scope and reporting rules","No original signed worksheet or historical completed outcome asserted","PTD central project and publication records"
"Inspection","Observed condition","Location, observation date, inspected surface and evidence reference","Observed; not an accepted work order","Meridian activities: road-surface inspections"
"Assessment","Classification required","Severity description, access constraint and reviewing role","Awaiting classification","Meridian risk: inconsistent historic reporting between zones"
"Planned intervention","Accepted scope","Work order, intended method, responsible team and target date","Scheduled; completion not inferred","Meridian activities: planned maintenance"
"Preventive maintenance","Condition threshold reached","Inspection reference and reason for acting before failure","Approved work boundary","Meridian activities: preventive maintenance"
"Limited civil works","Defined repair boundary","Scope, technical dependency and acceptance requirement","Approval retained separately from execution","Meridian activities: limited civil works"
"Procurement dependency","Part or service unavailable","Required item, dependent work and revised review date","Waiting; not counted as completed","Meridian risk: technical procurement delays"
"Team assignment","Accepted work order","Assigned role, planned visit and handover reference","Assigned; not evidence of site attendance","Meridian activities: technical-team coordination"
"Intervention record","Work performed","Visit record, method used, exceptions and completion evidence","Performed; awaiting acceptance","Project reporting model: intervention closure"
"Closure","Acceptance criteria met","Accepted evidence, approver role and closure date","Closed; retain unresolved linked exceptions","Project reporting model: signed closure"
"Reclassification","Earlier category corrected","Original category, revised category, reason and correction date","Revised; preserve original observation","Current MRS-01 classification workstream is later context"
"Unavailable","Evidence absent","Missing field, responsible role and next review date","Unavailable; never substitute zero","Reporting Dates, Definitions and Revisions"