Required at submission, not before Area — Meltshop Hot Strip Mill Balance of Plant Infrastructure
Discipline — Civil / Geotechnical Structural Mechanical Electrical Automation
Category — Scope addition (owner-initiated) Scope reduction / omission Design development / engineering change Unforeseen site conditions Regulatory / statutory / permit requirement Contractor-driven variation Error or omission in contract documents Schedule measure Quality / rework HSE requirement Budget / contract transfer
Reason — Unforeseen ground or site conditions Design error or omission Late or changed design information Owner requirement change Authority or permit condition Interface clash between packages or with OEM scope Market or procurement condition Weather / force majeure event Value engineering / optimisation Risk mitigation measure Operational / future-user requirement
Estimate class ROM ±50% Budget ±30% Definitive ±10%
Critical path No Yes
An actual estimate replaces order-of-magnitude bands: the class signals maturity, controls refine the figure during assessment, and the full history is kept.
AI Change Writer · Phase 3 Type rough notes or dictate on site; SCI drafts the structured request (trigger, basis, scope, impact, do-nothing, ask) for you to edit. Always a labelled suggestion, never auto-submitted.