Penfold J, Pearce S, Batandjieva B and Sinclair P, Development of ...

QRS-1443T-1, Version 1SummaryThe Low-level Waste Repository (LLWR) Site Licence Company is undertaking aprogramme of work that will result in the production of an Environmental Safety Case(ESC) for submission to the Environment Agency (EA) by May 2011. Demonstrationthat the closure strategy is optimised such that future impacts from the facility can beshown to be As Low As Reasonably Achievable (ALARA) is a fundamental part of thearguments to be presented. An optimised closure strategy requires integratedconsideration of the pre- and post-closure engineering and site controls in the postoperationalphase, i.e. “Institutional Control”.This document presents the outcomes of a systematic analysis of the requirements andfunctions of Institutional Control for the LLWR, noting the site and regulatory contextand best-practice. These requirements and functions are then used as a basis toconstruct alternative institutional control strategies, as illustrated below.Requirements:What needs to bedone duringinstutional controlFunctions:The scope of workduring institutionalcontrolStrategyStrategyStrategyStrategyThe 2011 ESC needs to explain and justify the preferred Institutional Control Strategyin sufficient detail to demonstrate that it is achievable. However, a detailed descriptionof the plan is not required, as the site is intended to continue operating for manydecades. Nevertheless, some elements need to be specified at an early stage,particularly in the areas of monitoring and record retention, as actions may be requiredin the near future. The requirements can be identified in part through the assessment ofInstitutional Control Strategies.i