Storage and Disposal Facility Operations
Storage vs disposal
Storage is interim, retrievable and requires ongoing safety cases, inspection and monitoring. Disposal is permanent, with no intention of retrieval, and relies on engineered and natural barriers. Know the concepts of the multiple barrier system, the safety case, and the period of institutional control.
Operational controls
Facility operations cover receipt and verification, package handling, inventory control, emplacement, capping and closure, and monitoring. Key controls include package inspection and dose-rate checks on receipt, reconciliation of declared versus measured inventory, stacking limits, and control of water ingress and gas venting.
Traps
- Confusing near-surface disposal (suitable for short-lived low-level waste) with geological disposal (for long-lived or high-level waste).
- Assuming institutional control lasts indefinitely.
- Ignoring the distinction between a safety assessment and a safety case (the case includes operational, management and confidence arguments).
- Forgetting that retrievability is a design feature of storage, and may be a feature of some disposal concepts.
Rule of thumb
If the waste is intended to be recoverable, it is storage; if it is intended to remain in place permanently, it is disposal. The words "retrievable" and "permanent" are the tell.
Worked example
A facility accepts only waste with a half-life under 30 years and activity concentration below a set limit, and places it in engineered vaults with a cap and 300-year institutional control. This is near-surface disposal, not geological disposal.