This book covers execution of mega industrial projects especially in oil and gas industries covering engineering, procurement, construction, commissioning and performance testing. It enumerates various tasks and deliverables under each discipline and sub-disciplines to define the detailed scope of work, supplies and services, as per level III of Prima Vera Schedule developed from the contract-based schedule. It gives an overall idea of how a project rolls out from commencement date to initial acceptance and executed practically with total contractor's scope of work broken down into tasks/activities at level III platform, while highlighting that support for fool proof project execution.