radioactive waste
Enable an AI agent to recognise radioactive waste, assess its radiological and material state, and identify management actions supported by evidence and applicable authorisations.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
Researched by: Codex + Grok
Purpose and description
Enable an AI agent to recognise radioactive waste, assess its radiological and material state, and identify management actions supported by evidence and applicable authorisations.
Radioactive waste is material, in any physical form, that contains or is contaminated with radionuclides at concentrations or activities greater than clearance levels set by the regulatory body, and for which no further use is foreseen.
It can be Assemble a dated characterisation record and flag unknown constituents or unrepresentative sampling.; Track waste quantities through segregation, treatment and conditioning while preserving links to predecessor and resulting quantities.; Compare documented waste properties with identified route or destination criteria and report unresolved mismatches.; Identify when changed conditions or ageing evidence require reassessment by a competent person.; Propose management options for authorised review, including continued storage, treatment, transfer or disposal.; Record an authorised status change, including clearance where applicable, together with its evidence and precise material boundary..
Distinguishing features
Record evidence that the material contains radionuclides; a radiation-emitting device without radioactive material does not qualify on that basis alone.
Establish that the material has been designated as waste under an identified decision framework; radioactive material still assigned an authorised use is not automatically waste.
Distinguish the waste quantity from the container or package holding it, including whether the container itself has become waste.
For spent fuel, disused sealed sources and naturally occurring radioactive material, require an explicit waste-status determination rather than inferring status from the material name.
Distinguish an identified waste quantity from surrounding contaminated land, structures or water, recording the boundary and any extraction or segregation that created it.
Scope
+ The material boundary, origin and basis for designating a quantity as radioactive waste
+ Radionuclide inventory, activity, physical form and relevant chemical or biological hazards
+ Waste condition, treatment history and relationships to containers and waste packages
+ Waste-specific exposure, release and deterioration concerns
+ Evidence and constraints governing storage, treatment, transfer, clearance and disposal eligibility
- Design, operation and licensing of treatment plants, storage facilities and disposal facilities
- Engineering specifications and certification of containers and transport packages
- Nuclear reactor operation and fuel-cycle production
- Individual radiation exposure records and medical management
- Organisational competence, staffing and emergency-response programmes
- Environmental contamination plumes and remediation sites beyond the bounded waste quantity
Characteristics
- Waste designation
- Undetermined, designated waste, designation under review, or designation ended; with decision basis and date Prevents radioactivity alone from being treated as sufficient evidence of waste status.
- Waste quantity and boundary
- Mass in kg, volume in m³, or item count as appropriate; with inclusions, exclusions and uncertainty Defines what the assessment covers and supports reconciliation after splitting, blending or processing.
- Radionuclide inventory
- Radionuclide identities and activities in Bq at a stated reference time; measured, calculated and unknown components distinguished Supports evaluation of radiological hazards and changes over time.
- Activity concentration
- Bq/kg or Bq/m³ with radionuclide, sampling basis, reference time and uncertainty Allows comparison with criteria only when averaging and measurement bases are compatible.
- External radiation field
- Specified dose-rate quantity in Sv/h or a suitable submultiple, with distance, geometry, shielding and measurement time Supports handling assessments without confusing measured radiation outside a package with its total radioactive inventory.
- Physical form
- Solid item, powder, sludge, liquid, gas, heterogeneous mixture, or other described form Influences dispersibility, sampling, containment and treatment options.
- Non-radiological hazards
- Identified chemical, biological and physical hazards; assessed absent or unknown where appropriate Avoids selecting a radiologically acceptable action that is incompatible with other material hazards.
- Decay heat
- W at a stated reference time, with measurement or calculation basis; unknown or assessed not relevant permitted Identifies whether heat generation constrains containment, storage or subsequent management.
- Fissile content
- Mass in g or kg by relevant isotope, with uncertainty and distribution evidence; unknown explicitly retained Identifies quantities requiring a competent criticality assessment rather than assuming all radioactive waste presents the same hazard.
- Waste classification
- Class label paired with classification system, version, jurisdiction and supporting determination Prevents class names from being interpreted as universal permissions or interchangeable categories.
- Containment and conditioning
- Links to enclosing containers, waste packages and conditioning materials, with current condition evidence Separates intrinsic waste properties from protection provided by its current configuration.
- Management-route eligibility
- Not assessed, evidence incomplete, criteria met, criteria not met, or determination expired; separately for each proposed route Makes eligibility specific to an action, destination and current evidence.
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.radioactive-waste
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 6 bundles · 11 layers · 18 findings · 28 questions.
Waste identity and designation Establishes which material is being modelled and why it is treated as radioactive waste.
Radioactivity, lack of current use and formal waste designation are related but distinct facts.
Material boundary
Defines the waste quantity independently of its packaging and location.
Bounded waste quantity
An assessment must identify the material it covers, including heterogeneous constituents and excluded surroundings.
- Which items or material quantities constitute this waste, and what mass, volume or count describes them? definition
- Are packaging, associated liquids and contaminated attachments included in this quantity or represented separately? boundary
Designation and origin
Connects waste status to its origin and an attributable determination.
Waste-status basis
The record must separate the material's history from the decision assigning it waste status.
- What process, activity or decommissioning event generated this material? provenance
- Who designated it as waste, when, and under which decision framework, including any unresolved intended reuse? definition
Radiological characterisation Captures radioactive constituents, measurement limitations and time-dependent assessments.
A waste label or external dose-rate reading cannot substitute for an adequately supported radionuclide inventory.
Inventory and evidence
Associates radionuclide estimates with their reference times and evidence.
Supported radionuclide inventory
Inventory estimates must distinguish measured results, inferred values, detection limits and uncharacterised fractions.
- Which radionuclides and activities are established, at what reference time, and by which measurements or calculations? measurement
- Which constituents or regions remain uncharacterised, and how representative are the samples or assay geometry? boundary
Time and radiological hazards
Records the radiological properties relevant to the current waste configuration and assessment date.
Dated hazard assessment
Radiation fields, heat generation and fissile-content concerns require explicit evidence and applicability determinations.
- What evidence establishes external radiation fields, decay heat and relevant fissile content for the present configuration? measurement
- What assessment accounts for radioactive decay and daughter ingrowth when projecting properties to the next management decision? provenance
Material behaviour and conditioning Describes how the waste's form and composition affect stability and processing.
Management choices depend on how the material behaves as well as how radioactive it is.
Form and coexisting hazards
Identifies material properties that affect dispersal, compatibility and treatment.
Waste form and reactivity
The record must capture relevant free liquids, particulates, reactive constituents and non-radiological hazards without assuming their absence.
- What physical phases, free-liquid content and dispersible fractions are present, and how were they established? measurement
- Which constituents constrain compatibility because of chemical toxicity, corrosivity, flammability, biological hazards or gas-generation potential? boundary
Processing and resulting form
Preserves the effects and material lineage of treatment and conditioning.
Conditioned waste lineage
A changed waste form must retain links to its inputs, processing evidence and resulting waste streams.
- Which treatments or conditioning steps were performed, and what evidence describes the resulting material form? provenance
- How were radionuclides and material quantities reconciled across the main output, secondary wastes and any documented releases? measurement
Containment and current condition Relates the waste to its present barriers and observed signs of deterioration or release.
The same waste can present different management constraints when its containment or condition changes.
Barriers and release pathways
Distinguishes the waste matrix from external containment and shielding.
Current containment configuration
The waste record must identify the barriers currently relied upon and the evidence supporting that reliance.
- Which waste matrix, containers and package components currently provide immobilisation, containment or shielding? boundary
- What observations establish leakage, removable contamination or possible pathways for release from this waste quantity? measurement
Condition and reassessment
Connects observed changes to the validity of previous assessments.
Condition-change significance
Changes in the waste or its immediate containment must be evaluated against the assumptions supporting continued management.
- What dated evidence records swelling, corrosion, cracking, liquid accumulation, temperature change or other relevant deterioration? measurement
- Which observed changes or overdue inspections require restrictions or competent reassessment before further handling? action
Management decisions and endpoints Connects classification and characterisation to specific proposed actions and destinations.
A classification alone does not establish that a waste quantity meets a particular route's criteria or has permission to proceed.
Classification and acceptance
Makes each classification and acceptance assessment specific to its governing framework.
Framework-specific eligibility
Eligibility must reference the applicable criteria, their version and the evidence used to assess this quantity.
- Which waste classification system applies, and what documented determination assigns this material to a class? definition
- For each proposed destination or process, which acceptance criteria are met, unmet or unsupported by sufficient evidence? boundary
Authorised actions and status transitions
Records what may proceed and what evidence must accompany the resulting transition.
Evidenced management transition
Recommendations, technical eligibility, authorisation and completed actions must remain distinguishable.
- What current authorisation and prerequisite evidence support the proposed storage, treatment, transfer, clearance or disposal action? action
- What receipt, completion record or status determination will establish the action's outcome for this precise waste quantity? provenance
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Kinds and varieties
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- exempt / very short-lived waste (VSLW)
- very low-level waste (VLLW)
- low-level waste (LLW)
- intermediate-level waste (ILW)
- high-level waste (HLW)
- spent nuclear fuel declared as waste
- naturally occurring radioactive material (NORM) waste
- mixed waste (radioactive plus hazardous chemical constituents)
- Which of these kinds and varieties hold for the sense of radioactive waste this model covers, and on what evidence? provenance
Identifiers and schemes
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Wikidata - Q185451 - item 'radioactive waste'
- Which of these identifiers and schemes hold for the sense of radioactive waste this model covers, and on what evidence? provenance
Standards and regulation
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- IAEA GSG-1 Classification of Radioactive Waste (IAEA)
- Which of these standards and regulation hold for the sense of radioactive waste this model covers, and on what evidence? provenance
Real-world use
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Arises from nuclear power generation, research reactors, medical isotope use, and industrial sealed sources; managed by storage, treatment, and disposal rather than as a product.
- Which of these real-world use hold for the sense of radioactive waste this model covers, and on what evidence? provenance
Typical measurements
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- activity concentration - from clearance levels (typically 0.1-10 Bq/g depending on nuclide) up to 10^16 Bq/g in high-level waste - Bq/g or Bq/kg
- Which of these typical measurements hold for the sense of radioactive waste this model covers, and on what evidence? provenance
Failure modes and hazards
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Uncontrolled release of radionuclides to air, water, or soil from failed containment
- Which of these failure modes and hazards hold for the sense of radioactive waste this model covers, and on what evidence? provenance
Regional variation
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- IAEA GSG-1 is the international scheme; national systems (e.g. US NRC Classes A/B/C/GTCC) use different class names and numerical limits
- Which of these regional variation hold for the sense of radioactive waste this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- spent nuclear fuel still intended for reprocessing - spent fuel is waste only when the owner/regulator declares no further use; otherwise it is a resource, not waste
- Which of these neighbouring kinds and how to tell them apart hold for the sense of radioactive waste this model covers, and on what evidence? provenance
Sources
- Classification of Radioactive Waste, IAEA Safety Standards Series No. GSG-1 - International classification scheme (exempt, VSLW, VLLW, LLW, ILW, HLW) and the definition of radioactive waste as material containing radionuclides above clearance levels with no further use foreseen.
What the second pass must settle
- Does an existing Vercy world model already cover radioactive waste, requiring this registry entry to link to it instead of creating a separate model?
- Which authoritative definitions and classification frameworks should the model support, particularly for spent fuel, disused sealed sources and naturally occurring radioactive material?
- What minimum characterisation evidence is sufficient for each management decision, and how should unmeasured radionuclides, heterogeneous distributions and uncertainty constrain eligibility?
- Where should responsibility divide between this model and neighbouring waste-package, contaminated-material and facility models when barriers or material boundaries change?
- Which authoritative sources establish route-specific acceptance, clearance and reassessment criteria, and how should their jurisdiction, version and validity period be maintained?