LTP meaning

In nuclear decommissioning practice, LTP means lifetime Plan: the integrated plan for a nuclear site that sets out the full scope, schedule and cost to move from the current state to the agreed End State. It is a programme and contract management term used within the UK Nuclear Decommissioning Authority (NDA) estate, rather than a statutory or case law definition (the NDA itself is established by the Energy Act 2004). Prepared and maintained by the relevant site licence company, the LTP is submitted to the NDA annually (and updated through change control). It establishes the site baseline and underpins funding requests, performance management and oversight of risk, assumptions, dependencies and deliverables. In practice it informs engagement with regulators (including the Office for Nuclear Regulation and the environment agencies) and supports procurement and contract administration across the decommissioning lifecycle. Across England & Wales, Scotland and Northern Ireland, usage is broadly consistent for NDA-managed sites. In Ireland, LTP is not a standard regulatory term; comparable planning may appear in decommissioning, waste or environmental management documentation. Typical LTP content includes the target End State, lifecycle cost estimates, schedule logic and milestones, hazards and waste strategies, and periodic rebaselining to reflect scope or funding changes.