Decommissioning of underground structures, systems and by International Atomic Energy Agency

By International Atomic Energy Agency

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Reinforcing and anchoring techniques were used to preserve the structural integrity of aged tubes prior to removal from the excavation; for example, a spreader bar with multiple attachment points was used to distribute load and lift the intact tubes from excavation. Eventually, a radiological survey determined that the site conditions met Texas criteria for release for unrestricted use [130, 131]. An ongoing decommissioning project concerns the below ground ducts at the BGRR. 4. A primary liner is located inside the below ground ducts.

Thus, decontamination techniques are not unique to underground decommissioning and are not discussed in detail in this report. 2. Worker safety For underground decommissioning, worker protection is an important input to the selection of technologies, engineering planning and work planning. Typical hazards at the facilities described in this report include heavy equipment operation, lifting and rigging, noise, falling objects, eye hazards, radiation exposure, entry work to confined spaces, fire hazards, electric shocks, soil collapse and heat stress.

In addition, there are many project management tools, techniques and software that can be used [45–48]. Reference [49] includes guidance on cost items for nuclear decommissioning. 3. g. g. g. height, location and impacts on other facilities); — Resource and equipment costs and availability. In selecting a decommissioning strategy for underground SSCs, each of these factors is evaluated in terms of its impact on conducting the project in a timely and cost effective manner that meets regulatory requirements.

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