How To Transport Radioactive Materials: UK Road, Air & Sea

Transporting radioactive materials simply means moving items that emit ionising radiation—Class 7 dangerous goods—from one place to another. That could be a vial of technetium for a hospital, gauges used on a construction site, or fuel flasks from a power station. The risks are controlled through robust package design, strict limits on radiation at the surface, careful handling, and clear documentation. Because exposure and criticality must be prevented under both normal and accident conditions, the law requires you to follow precise rules at every step.

This guide explains how to do that, step by step, for UK road, air and sea. You’ll learn what counts as Class 7, who regulates you (ONR, DfT and international bodies), and which package type to use (Excepted, Industrial, Type A, B, C). We cover correct naming and classification, how to calculate Transport Index (TI) and Criticality Safety Index (CSI), marking, labelling and placarding, required documents by mode, and key ADR/CDG, IATA and IMDG differences. You’ll also find practical handling and stowage rules, radiation protection and emergency planning essentials, security expectations for higher-risk loads, approvals and notifications, competence requirements, common shipment scenarios, a planning checklist, and links to official resources so you can ship compliantly and confidently.

What counts as radioactive material (Class 7)

Before you plan how to transport radioactive materials, confirm your goods are Class 7. In the UN Model Regulations and IAEA transport rules adopted in the UK, Class 7 covers materials that contain radionuclides and meet the regulatory criteria for control in transport. Control is independent of use: about 95% of consignments globally are unrelated to nuclear power, and roughly 15 million packages move each year under these rules. Typical shipments range from small medical sources to large Type B casks, with protection primarily achieved by the package design.

Radiopharmaceuticals and generators: Hospital isotopes for diagnosis and therapy.
Sealed sources for industry: Gauges, radiography sources and devices used in construction and non-destructive testing (including offshore).
Uranium ore and yellowcake (U3O8): Drummed concentrate from mines to converters.
Uranium hexafluoride (UF6): Natural and enriched UF6 cylinders for conversion/enrichment; note its significant chemical hazard.
Fresh fuel assemblies: Mildly radioactive, typically without shielding requirements.
Spent (used) fuel: Highly radioactive, shipped in robust Type B casks by road, rail or sea.
Vitrified high-level waste: Fission products immobilised in glass canisters.
Low and intermediate level wastes: Drummed solids, tools, clothing and similar materials.

Next, you’ll classify and correctly name your specific consignment under the IAEA/UN system.

UK regulators and international rules you must follow

When planning how to transport radioactive materials from or within Great Britain, align your shipment to IAEA-based international rules and GB law enforced by the Office for Nuclear Regulation (ONR). ONR is the competent authority for Class 7 by road, rail and inland waterways in Great Britain, undertakes inspection and enforcement, and provides approvals and guidance. It also advises other transport regulators for Northern Ireland and for movements by sea and air.

IAEA Transport Regulations: The international baseline for Class 7 across all modes (package design, categorisation, documentation, labelling, transport index and special arrangements).
UN Model Regulations (Class 7): Harmonised dangerous goods framework that underpins modal codes.
ADR/RID via CDG (GB law): The Carriage of Dangerous Goods and Use of Transportable Pressure Equipment Regulations apply ADR (road) and RID (rail) in Great Britain; ONR regulates compliance.
IMDG Code (sea) + IMO INF Code: IMO rules for sea transport; INF Code adds ship design/equipment requirements for irradiated fuel, plutonium and HLW.
ICAO Technical Instructions (air): Air transport requirements used globally; airlines operationalise them through industry procedures.

International shipments can face additional authorisations and validation; engage early with the competent authority. Next, choose the correct package type—your primary safety control in transport.

Core package types and when to use them

Choosing the right package is the single most important decision in how to transport radioactive materials. The IAEA transport regulations classify packages by the hazard they must control—activity, heat, radiation, form and (where relevant) fissile properties—and by how robust they must be under normal and accident conditions. Select the category that matches your contents and mode, then build your shipment around that choice.

Excepted: Very low activity where the potential hazards are insignificant; minimal testing. Typical for small instruments, articles or limited radiopharmaceuticals.
Industrial (IP): For low-activity materials where contamination control, not shielding, is the main aim. Common for uranium oxide concentrate (yellowcake) and many LLW consignments in drums/containers.
Type A: Limited quantities of medium-activity materials designed to withstand transport accidents. Used widely for medical/industrial radioisotopes and some fuel materials.
Type B: High-activity/heat contents (e.g., spent fuel, vitrified HLW, MOX). Very robust casks that maintain containment and shielding in severe accidents; designs are certified by the competent authority.
Type C (air only): Highest performance for air shipments of high-activity materials; must survive severe aircraft accident scenarios.
UF6 cylinders: Dedicated 48Y (natural) and 30B (enriched) cylinders meeting stringent IAEA tests (pressure, drop and 800°C/30 min fire) owing to UF6’s significant chemical hazard. Fresh fuel is typically Type A; fresh MOX uses Type B.

How to classify and name your consignment

Getting classification right is the domino that sets everything else correctly—package choice, labels, placards, documentation and limits in carriage. For Class 7, the IAEA/UN system is content- and package-driven: you characterise the radioactive contents, decide the right package type, then select the correct Proper Shipping Name (PSN) and UN number for how to transport radioactive materials lawfully.

Characterise the contents: Identify radionuclides, total activity (A_total), heat load (kW), physical/chemical form, external dose rates, and whether material is fissile. Prevention of criticality and control of external radiation are core IAEA principles.
Decide fissile status: Confirm if the load is fissile or qualifies for a fissile exception. You’ll use this later to set the Criticality Safety Index (CSI).
Select package category: Align the content with the approved package type (Excepted, Industrial, Type A, Type B, Type C, or dedicated UF6 cylinder), as this is the primary safety control under both normal and accident conditions.
Choose PSN/UN number: From ADR/IATA/IMDG Class 7 lists, select the entry that matches the package type, material form and fissile status (e.g., entries specific to Type A/Type B, excepted packages, or UF6).
Assign transport category: Based on measured surface dose rate and the calculated Transport Index (TI), determine Category I–White, II–Yellow or III–Yellow. You’ll calculate TI/CSI next.
Check for special arrangements: If you cannot fully meet the regulations, you’ll need competent authority approval for a “special arrangement” before shipment.

How to calculate the transport index (TI) and criticality safety index (CSI)

TI and CSI are the control “dials” for how to transport radioactive materials safely. TI limits radiation exposure in transit by quantifying the maximum dose rate at 1 metre from the package; CSI prevents criticality by limiting how many fissile packages can travel together and how they’re stowed. Both values drive category, segregation and conveyance limits across ADR, IATA and IMDG.

Calculate TI (packages, overpacks, containers):
1. Use a calibrated meter to find the maximum dose rate at 1 m from any point on the external surface.
2. Convert using: TI = ceil to 0.1 ( dose rate at 1 m (mSv/h) × 100 )
  Equivalent: TI = ceil to 0.1 ( dose rate at 1 m (µSv/h) ÷ 10 ).
3. Example: 18 µSv/h @ 1 m → TI = 1.8.
4. For overpacks/freight containers, use the greater of the measured TI at 1 m or the sum of enclosed package TIs.
5. Sum TIs to check vehicle/aircraft/CTU limits and to set package category via the modal tables.
Determine CSI (fissile control):
1. Confirm fissile status or a fissile exception; if fissile-excepted, set CSI = 0.
2. Otherwise, take the CSI from the competent authority/design approval or validated criticality assessment.
3. Sum CSIs per overpack/conveyance and apply modal limits and segregation/stowage rules.

Record TI/CSI on the transport documentation (and labels where required).

Marking, labelling and placarding requirements

Clear, durable package information is essential to show handlers exactly what they are dealing with and how to transport radioactive materials safely. Requirements vary by package type, category and mode, but all are based on IAEA/UN rules adopted in ADR, IATA and IMDG. Apply marks/labels so they are legible, in strong contrast, weather‑resistant, and not obscured by closures or straps.

Package markings: Show the Proper Shipping Name and UN number, consignor/consignee details, and any mode‑specific marks (e.g., gross mass where required). Remove or cover any obsolete marks.
Radiation labels (trefoil): Affix Category I–White, II–Yellow or III–Yellow as applicable. Labels must show radionuclide(s), activity, and the TI for Category II/III.
Fissile label: If not fissile‑excepted, add the black‑on‑white FISSILE label with the CSI.
Excepted packages: No radiation label or vehicle placards. Mark with PSN and UN number; for air, apply the “Radioactive Material, Excepted Package” handling label.
Overpacks: Mark “OVERPACK”. If inner marks/labels are not visible, repeat them on the overpack. Determine and display the correct category using the greater of the measured TI at 1 m or the sum of enclosed TIs; sum CSIs where relevant.
Freight containers/vehicles: Placard with the Class 7 RADIOACTIVE placard (all four sides for containers; both sides and rear for road vehicles). Display the UN number with the placard when required by the mode/regulations.

Documentation for road, air and sea shipments

Paperwork proves your shipment is properly classified, packaged and controlled under IAEA/UN rules adopted in ADR/RID, ICAO/IATA and the IMDG Code. Incomplete or inconsistent documents are a common reason for refusal, so build a single truth set and mirror it across modes before you book space.

Core details on every DG transport document: Proper Shipping Name and UN number; Class 7; package type (e.g., Excepted, Type A/B/C or UF6 cylinder) and category (I–White/II–Yellow/III–Yellow); radionuclide(s) and activity; physical/chemical form; measured TI (and CSI for fissile); number and type of packages/overpacks; consignor/consignee details; any competent authority approval numbers (e.g., Type B design, special form or special arrangement).
Road/Rail (ADR/RID via CDG): A dangerous goods transport document aligning to ADR plus the in‑cab ADR “Instructions in Writing.” Carry relevant approval certificates and keep dose‑rate survey records used to derive TI available for inspection.
Air (ICAO/IATA): An air dangerous goods shipper’s declaration and air waybill entries consistent with it, plus operator notification to the pilot‑in‑command (includes TI/CSI and stowage location). Many excepted packages travel without a formal declaration; check operator/state variations.
Sea (IMDG/INF): An IMDG dangerous goods transport document; a Container/Vehicle Packing Certificate when using a CTU; master’s information to support stowage/segregation. Ship INF‑class cargoes in line with the IMO INF Code.
Keep supporting records: Relevant ONR approvals, validations, Radiation Risk Assessment and emergency/contingency arrangements should be retained in the shipment file.

Mode-specific requirements for UK road (ADR/CDG)

In Great Britain, road movements must comply with ADR as implemented through the Carriage of Dangerous Goods (CDG) Regulations, with the Office for Nuclear Regulation (ONR) acting as competent authority for Class 7. Mode-specific controls focus on vehicle presentation, TI/CSI and dose‑rate limits, paperwork in‑cab, equipment and contingency arrangements, and carrying any required competent authority approvals.

Vehicle and package presentation: Secure loads to prevent movement; keep all package marks and labels visible. If used, mark “OVERPACK” and repeat required labels/marks when inner ones aren’t visible. Placard vehicles with the Class 7 RADIOACTIVE placard on both sides and rear; display the UN number with placards where ADR requires it.
TI/CSI and dose‑rate control: Sum TI and CSI for the vehicle and comply with ADR conveyance limits, separation and stowage rules. Verify dose‑rate limits at the vehicle surface and at 1 m/2 m; use Category I–White/II–Yellow/III–Yellow to plan segregation from people, foodstuffs and other loads.
In‑cab documents and equipment: Carry the ADR dangerous goods transport document and ADR “Instructions in Writing,” plus relevant approval certificates (e.g., Type B, special form, special arrangement). Ensure mandatory vehicle equipment per ADR and that drivers/crew have appropriate training.
RRA and contingency: Complete a Radiation Risk Assessment and maintain proportionate emergency/contingency plans aligned to ONR guidance. Be prepared for ONR inspection and to provide survey records supporting the declared TI.

Mode-specific requirements for air (IATA/ICAO)

Air shipments must comply with the ICAO Technical Instructions as implemented by the IATA Dangerous Goods Regulations (airlines may apply more‑restrictive operator and State variations). For Class 7, the package is still your primary control, but TI/CSI drive booking, load planning and the Notification to Pilot‑in‑Command. Many Class 7 entries are cargo aircraft only; excepted packages can usually fly on passenger services. High‑activity air consignments require Type C performance.

Documentation and NOTOC: Complete an IATA Shipper’s Declaration (except where excepted packages are permitted without it), align the air waybill, and ensure the pilot‑in‑command is notified of package count, stowage location, TI/CSI and emergency information.
Marking and labelling: Apply Class 7 labels (category I–White/II–Yellow/III–Yellow showing radionuclide, activity and TI), FISSILE label with CSI where applicable, and overpack marks. For air excepted packages, affix the “Radioactive Material, Excepted Package” handling label.
Packaging and approvals: Use the approved package type (Type A/B/C, IP, excepted or UF6 cylinder) with any competent authority approvals/special form certificates referenced on documents.
Booking, segregation and loading: Declare TI/CSI; operators sum values per ULD/hold and stow to meet aircraft and IATA segregation limits. Class 7 is stowed in the hold and must remain accessible for safety checks.
Variations and special arrangements: Check operator/State variations; where full compliance isn’t possible, obtain special arrangement approvals before uplift.

Mode-specific requirements for sea (IMDG/INF Code)

Sea transport builds on the IAEA/UN rules via the IMO’s IMDG Code, with additional ship design and equipment provisions under the INF Code for irradiated nuclear fuel, plutonium and vitrified high‑level waste. Your package remains the primary safety control, but shipboard planning uses summed TI/CSI, correct placarding of CTUs, and stowage/segregation decisions documented for the master before sailing.

Use the IMDG Code: Classify, package and declare Class 7 to IMDG, mirroring IAEA requirements for contents, package type and category. Keep approvals (e.g., Type B design) on file.
INF Code where applicable: Shipments of irradiated fuel, plutonium or HLW must use vessels meeting the INF Code. Purpose‑built INF‑3 ships routinely carry Type B casks under stringent design redundancies.
Documents for sea: Provide an IMDG dangerous goods transport document and, when using a CTU, a Container/Vehicle Packing Certificate. Supply the master with information to plan stowage/segregation using declared TI/CSI.
CTU marking and placarding: Affix the Class 7 RADIOACTIVE placard on all four sides of the freight container and display the UN number where required. Ensure package marks/labels remain visible or are repeated on the overpack/CTU.
Sum TI/CSI for CTUs and the voyage: Use the greater of measured TI at 1 m or the sum of enclosed TIs for overpacks/containers; add CSI where fissile. Operators use these totals to control exposure and criticality in stowage plans.
Stowage and segregation: Follow IMDG stowage/segregation instructions for Class 7 (including separation from foodstuffs and other sensitive cargoes) and maintain accessibility for shipboard checks.

Handling, loading, segregation and stowage

Operational control is where most consignments succeed or fail. Treat packages so their certified performance is never challenged: avoid impact or crushing, use designed lifting points, and never tamper with closures. Build your load plan from measured dose rates and declared TI/CSI, then secure packages so they cannot move, tip or be obscured, and remain accessible for survey and checks. For overpacks/containers, base segregation on the greater of measured TI at 1 m or the sum of enclosed TIs, and always sum CSIs for fissile control. These basics are the practical heart of how to transport radioactive materials safely.

Protect the package: No dropping, dragging or stacking unless permitted.
Secure the load: Rated restraint against forward/side/vertical movement.
Keep information visible: Do not cover labels/marks; repeat on overpacks if needed.
Apply TI/CSI in planning: Meet conveyance limits and segregation derived from category I–White/II–Yellow/III–Yellow and CSI totals.
Separate appropriately: Keep away from occupied areas and foodstuffs; avoid incompatible cargoes.
Control environment: Stow away from heat sources, moisture and corrosives; maintain ventilation as required.
Maintain access: Allow inspection and emergency access; do not modify packages in transit.

Radiation protection, risk assessment and emergency planning

Radiation protection in transport is planned, not improvised. Your first step in how to transport radioactive materials safely is to implement a proportionate Radiation Protection Programme (RPP) aligned to IAEA transport regulations. In Great Britain, you must complete a Radiation Risk Assessment (RRA) under CDG, and maintain clear emergency/contingency arrangements. ONR provides guidance, approvals oversight, and publishes prior information for the public on radiation emergencies during transport.

Characterise and survey: Confirm radionuclides, activity, heat and dose rates; measure at the surface and 1 m to set TI and verify category.
Control exposure: Use time, distance and shielding; plan routes, vehicle access and rest points to minimise exposure to crew and the public.
Brief and equip staff: Issue written instructions; provide suitable equipment and monitoring instruments; ensure competence for normal and upset conditions.
Monitor and record: Perform contamination checks where relevant; keep survey results that underpin declared TI available for inspection.
Document contingencies: Define immediate actions, cordons, isolation of packages, communications, and handover to emergency services.
Notify when required: Follow ONR transport incident notification requirements and retain records of any event and corrective actions.
Exercise and review: Drill your plan, capture lessons, and update the RPP/RRA when consignments, routes or packages change.

Well‑prepared emergency arrangements protect people, property and the environment—and demonstrate regulatory compliance.

Security and safeguards for higher-risk materials

For higher-risk Class 7 loads—spent fuel, MOX/plutonium oxide, vitrified HLW, large Co‑60 sources, or any fissile consignment with a non‑zero CSI—security and safeguards sit alongside safety. ONR oversees Class 7 transport in Great Britain and expects a graded, defence‑in‑depth approach. At sea, irradiated fuel, plutonium and HLW must be carried on ships meeting the IMO INF Code; purpose‑built INF‑class vessels routinely move Type B casks with extensive redundancy. The IAEA emphasises managing the interface between safety and security: keep mandatory marks/labels visible, while protecting sensitive information.

Plan physical protection: Graded measures, tamper‑evident sealing, controlled access, and continuous consignment monitoring.
Protect information: Share routes/timings on a need‑to‑know basis; use secure communications.
Use competent crews: Trained personnel, clear roles, and rehearsed contingencies.
Routeing/escorts: Apply authority‑mandated routes, timing controls and escorts where required.
Secure halts: Pre‑authorised, secure parking/berthing only.
Apply safeguards: Maintain material accountancy, continuity‑of‑knowledge (seals/serials), and timely reports to the competent authority and, where applicable, under IAEA safeguards.

Build these controls into your shipment plan from the outset to keep people, the package and information safe.

Notifications, approvals, inspections and incident reporting

Some Class 7 moves can proceed on the strength of compliant packaging and documents; others require you to notify the competent authority, obtain approvals, and be ready for inspection. In Great Britain, the Office for Nuclear Regulation (ONR) is the competent authority for transport by road, rail and inland waterways, and provides approvals, inspection and enforcement, plus processes for shipment/incident notifications. Engage early—especially for international legs—so approvals and any validations are in place before you book carriage.

Approvals you may need: Competent Authority approval/validation for Type B/Type C package designs, special form radioisotopes, fissile packages/arrangements, and any “special arrangement” where full compliance isn’t possible.
Shipment/consignment notifications: Certain movements require prior notification to the competent authority; follow the published consignment/shipment notification process and keep acknowledgements on file.
Inspections and enforcement: ONR inspectors may examine packages, documents, dose‑rate surveys and emergency arrangements. Cooperate fully; rectify non‑compliances and retain evidence of corrective action.
Incident notifications: First make safe, protect people and secure the area. Notify emergency services as needed, then report to ONR using its transport incident notification process. Preserve the package and records, and submit follow‑up details when requested.
Records and retention: Keep approvals, validations, survey data (supporting TI), RRAs, emergency plans and training/briefing records available for inspection and post‑event review.

Proactive notifications and complete approval files prevent delays and demonstrate effective control of how to transport radioactive materials compliantly.

People and competence: roles, responsibilities and training

Competence is what turns rules into safe outcomes. The IAEA makes clear that prime responsibility for safety rests with the organisations conducting the activity, and evidence shows the consignor bears primary responsibility for packaging and for training the people directly involved in transport. In Great Britain, ONR regulates Class 7 transport, so define who does what, prove competence, and keep it current with refreshers and drills.

Consignor/shipper: Classifies contents, selects and uses the approved package, obtains any competent authority approvals, measures dose rate to set TI/CSI, applies marks/labels, and prepares accurate documents.
Packer/loader: Builds packages/overpacks to design, protects closures, secures loads, and keeps labels visible and legible.
Carrier/operator: Verifies documentation, sums TI/CSI, plans stowage/segregation, and issues pilot/master notifications as required.
Consignee/receiver: Plans safe receipt, performs checks/surveys where needed, and manages any non‑conformities.
Radiation protection lead: Maintains the Radiation Protection Programme and Risk Assessment, monitoring, briefings and emergency arrangements.
Security/safeguards lead (where applicable): Implements graded physical protection and information controls.

Provide role‑specific training aligned to ADR/IATA/IMDG and company procedures, include instrument use, contamination checks and emergency actions, record competence, and rehearse realistically to keep performance sharp.

Common shipment scenarios and what they require

Most movements fit a handful of well‑established patterns. Map your load to one of these and apply the matching IAEA/UN controls in ADR, IATA or IMDG. It’s the fastest way to plan how to transport radioactive materials without missing a critical step on package choice, TI/CSI, labels and documents.

Radiopharmaceuticals by air (hospital): Excepted or Type A. For excepted, apply the air handling label; for Type A, use Category I/II as measured, Class 7 labels with radionuclide, activity and TI. IATA Shipper’s Declaration required for Type A; align the air waybill and NOTOC.
Industrial sealed source (NDT) by road: Typically Type A. Label Category II/III based on TI; add FISSILE label only if applicable with CSI. Carry ADR transport document and Instructions in Writing; secure the load and retain dose‑rate survey supporting TI.
Yellowcake (U3O8) by sea in drums: Industrial package (IP) in a freight container. IMDG DG document plus Container/Vehicle Packing Certificate; placard the container on all four sides with Class 7; segregate from foodstuffs.
UF6 to/from enrichment: 48Y (natural) or 30B (enriched) cylinders meeting pressure/drop/800°C‑30 min fire tests. Declare radionuclide and quantity; reference any approvals; apply Class 7 marks/labels and manage by IMDG/ADR/IATA as routed.
Spent fuel or vitrified HLW: Type B casks; non‑zero CSI for fissile; sum TI/CSI for conveyance limits. Sea voyages on INF‑class ships; hold competent authority approvals and follow notification/inspection expectations; implement graded security.
LLW to treatment facility: Industrial package (IP) drums/overpacks. Mark PSN/UN; apply radiation labels/category as measured; ADR documents in‑cab; maintain Radiation Risk Assessment and contingency plan.

Practical checklist for planning a compliant shipment

Use this start‑to‑finish checklist to keep your Class 7 shipment lawful and efficient across UK road, air and sea. It mirrors IAEA/UN rules as applied in ADR/CDG, IATA/ICAO and IMDG/INF, and the Office for Nuclear Regulation (ONR) oversight in Great Britain.

Confirm Class 7: Identify radionuclides, total activity, heat, physical/chemical form, and fissile status.
Pick the right package: Choose Excepted/IP/Type A/B/C or UF6 cylinder; secure ONR/competent authority approvals/validations (Type B/C, fissile, special form, or special arrangement) before booking.
Survey and set controls: Measure dose rates; calculate TI and, if applicable, CSI; assign Category I–White/II–Yellow/III–Yellow.
Classify and name: Select the correct PSN/UN; check any modal or operator variations.
Mark/label/placard: Apply PSN/UN, radiation label with radionuclide, activity and TI; add FISSILE label with CSI; mark OVERPACK; placard vehicle/container and display UN number where required.
Prepare documents: ADR DG document + Instructions in Writing; IATA Shipper’s Declaration/AWB + NOTOC; IMDG DG document + Container/Vehicle Packing Certificate; carry approvals.
Plan loading: Sum TI/CSI for overpacks/CTUs/conveyances; segregate from people/foodstuffs; secure the load; keep labels visible.
Protect people: Complete Radiation Risk Assessment and emergency/contingency plan; brief staff; provide instruments/equipment.
Notify and book: Submit any ONR shipment notifications; confirm carrier acceptance (e.g., INF‑class ship for irradiated fuel).
Keep records: Retain surveys supporting TI, approvals, training and incident procedures for inspection.

Useful resources and official guidance

These are the primary, authoritative sources UK dutyholders use when planning how to transport radioactive materials. They set the baseline for classification, packaging, TI/CSI, marking, documentation, security and emergency arrangements across road, air and sea, and include the GB competent authority’s approvals, notifications and inspection guidance.

ONR – Transport of radioactive material: GB competent authority; approvals, inspections, incident/shipment notifications, guidance and TCA newsletters.
IAEA – Regulations for the Safe Transport of Radioactive Material: Package types, TI/CSI, safety fundamentals and Radiation Protection Programmes.
UN Model Regulations (Class 7): Harmonised basis adopted into ADR, ICAO and IMO modal codes.
ADR via CDG (Great Britain): Road rules, documents, vehicle equipment and Instructions in Writing.
ICAO Technical Instructions/IATA DGR: Air packaging, labels, shipper’s declaration, NOTOC and operator variations.
IMDG Code + IMO INF Code: Sea stowage/segregation; INF ships for irradiated fuel, plutonium and HLW.
ONR – Prior information to the public: Transport radiation emergency information and planning context.

Key takeaways

Moving Class 7 safely and legally is a package‑first exercise backed by measured controls and clean paperwork. Choose the right package, measure dose rates to set TI (and CSI if fissile), name and declare the consignment correctly, then apply marks, labels, placards and mode‑specific documents. In Great Britain, plan under ADR/CDG with ONR oversight, and build in your Radiation Risk Assessment, emergency arrangements and security where risk warrants it.

Pick the right package: Excepted, IP, Type A/B/C or dedicated UF6 cylinders.
Measure, don’t guess: Survey dose; calculate TI and, if applicable, CSI.
Name it correctly: PSN/UN aligned to package type, form and fissile status.
Make it visible: Required marks/labels; FISSILE label with CSI; overpack/vehicle/container placards.
Paper drives permission: Consistent ADR/IATA/IMDG DG docs; carry approvals/validations.
Plan the load: Sum TI/CSI, segregate from people/foodstuffs, secure packages.
Prepare people and plans: RPP/RRA, emergency info, training and drills.
Engage early with ONR: Approvals, notifications and inspection readiness.

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