World Nuclear Transport Institute

Overview

The World Nuclear Transport Institute (WNTI) is a London-based international membership body that represents the nuclear transport industry — the companies that move radioactive materials by road, rail, sea and air. Founded on 28 April 1998 by British Nuclear Fuels, Cogema and the Federation of Electric Power Companies of Japan, it writes industry standards, coordinates working groups, and speaks for the sector at the International Maritime Organization and the International Atomic Energy Agency (World Nuclear Transport Institute).

WNTI is not a regulator, and it is not the World Nuclear Association — a separate industry body that also works on nuclear fuel-cycle policy. WNTI’s niche is narrower and more operational: the rules, packaging, and logistics of actually moving radioactive material, from uranium ore concentrate at the mine gate to spent fuel at the end of the cycle (MINE Australia; World Nuclear Transport Institute). Its members span the whole chain — utilities, fuel producers and fabricators, transport companies, package designers and producers, and mines — and an industry association in Namibia describes its network as 40+ companies (Namibian Uranium Association).

The Institute’s own account of its founding is that it was created to give the radioactive transport and packaging sectors a dedicated vehicle for exchanging information and building consolidated industry positions — a strong industry voice in the international and national bodies where transport safety is decided (IAEA INIS). That positioning, between industry and regulator, explains almost everything WNTI has done since: it does not set law, but it shapes the standards and guidance that law relies on.

Standards, working groups and the front end of the fuel cycle

WNTI’s most concrete work is technical: standards, good-practice guides and fact sheets produced through member working groups, then carried into international rule-making. A recent example is its standard on the Packaging and Transport of Uranium Concentrates, whose fourth version appeared in March 2025 with expanded guidance on ISO shipping containers, drum integrity and stacking, contamination control, and documentation (MINE Australia). The standard was developed with WNTI’s Uranium Concentrate Working Group, which brings together uranium miners, producers and converters, transport and logistics companies, packaging experts, and regulatory and safety authorities (MINE Australia). Version 4 was put together by practitioners including Marc-Andre Charette of Cameco and Steve Hansen of TAM International, and it is intended as both a technical reference and a training resource for uranium producers, converters, transport and logistics companies, packaging manufacturers, regulatory authorities, nuclear utilities and emergency response planners (MINE Australia).

That pattern — a specialist working group turning operational experience into a written standard — dates to WNTI’s earliest years, when it set up its first working groups, HEX-T and St-1, and published its first document, The International Safety Regime, in 1999 (World Nuclear Transport Institute). Its members also meet twice a year in Semi-Annual Members Meetings (SAMMs), a rhythm established with the first SAMM in 2004, and WNTI has long sponsored students at the World Maritime University — nine students from eight countries, on its own account (World Nuclear Transport Institute). In 2019 Sellafield became its first Full Member, a category introduced the previous year for companies making a substantial commitment and taking an active part in WNTI’s strategy and development (World Nuclear Transport Institute).

The standards sit inside a layered regulatory picture. Internationally, the governing frameworks include the IAEA’s Specific Safety Requirements SSR-6 for the safe transport of radioactive material, the UN Recommendations on the Transport of Dangerous Goods (the Orange Book), and the International Maritime Dangerous Goods (IMDG) Code, alongside national rules such as the United States’ Title 49 CFR, Canada’s packaging and transport regulations, and Europe’s ADR agreement (MINE Australia). WNTI’s role is to make those layers work together in practice: its uranium-concentrate guidance, for instance, covers road, rail and sea transport with an emphasis on intermodal compatibility, and it supplies standardised forms, inspection checklists and container-loading guides aimed particularly at junior mining companies new to nuclear regulation (MINE Australia).

WNTI also frames its work in terms of the whole fuel cycle. “Front end” transport runs from uranium mining to the manufacture of new fuel assemblies; “back end” transport covers spent fuel leaving reactors, whether for reprocessing or for interim storage pending final disposal (World Nuclear Transport Institute). But the Institute stresses that most of its world is not the fuel cycle at all: around 95% of radioactive-material transports, on its account, serve medicine, agriculture, research, manufacturing, non-destructive testing and mineral exploration — the shipments whose delay can mean a postponed cancer treatment or a stalled industrial inspection (World Nuclear Transport Institute; World Nuclear News).

Inside the rule-making rooms: the IMO, the IAEA and the Nuclear Code

WNTI’s influence runs through formal standing inside the bodies that write the rules. At the International Maritime Organization it says it is the only non-governmental organisation that is an industry expert in Class 7 radioactive material transports, and that it has held Consultative Status there for over 20 years, taking part in the Maritime Safety Committee, the Facilitation Committee, the Marine Environment Protection Committee, and the Sub-Committee on the Carriage of Cargoes and Containers, which keeps the IMDG Code updated (World Nuclear Transport Institute). It gained provisional Consultative and Observer status with the IMO, the IAEA and the International Civil Aviation Organization within a year of its founding, in 1999, and has attended the IAEA’s Transport Safety Standards Committee (TRANSSC) since 2000 (World Nuclear Transport Institute). It also took part in the first meeting of the IAEA’s Emergency Preparedness and Response Standards Committee (EPReSC) in Vienna in 2015, extending its presence from transport rule-making into emergency preparedness (World Nuclear Transport Institute).

That standing produced a notable result in 2024–2025. In March 2024 WNTI presented a gap analysis to the IMO’s Maritime Safety Committee as a framework for revising the Code of Safety for Nuclear Merchant Ships — the 1981-vintage Nuclear Code governing nuclear-powered merchant vessels — proposing a non-prescriptive, technology-neutral approach aligned with IAEA safety standards (International Union of Marine Insurance). In March 2025 an MSC Correspondence Group recommended the gap analysis as the basis for updating the Code, and at MSC 110 in June 2025 the Committee agreed to review the Nuclear Code, which was considered outdated given the gap between current technology and existing regulation, with updates to SOLAS Chapter VIII also required (International Union of Marine Insurance).

WNTI also works the maritime rules for conventional cargo. Its fact sheet on the INF Code — the IMO instrument for ships carrying irradiated nuclear fuel, plutonium and high-level radioactive waste — explains how INF vessels must comply with the SOLAS and MARPOL conventions and meet specific requirements on damage stability, fire protection, temperature control of cargo spaces, structural strength, cargo securing, electrical supplies, radiological protection, management and training, shipboard emergency plans, and incident notification, with regular inspections and surveys under SOLAS (World Nuclear Transport Institute).

The Institute’s technical voice carries weight with national regulators too. In a Canadian parliamentary hearing on the transport of decommissioned steam generators to Sweden, the president of the Canadian Nuclear Safety Commission read out WNTI’s conclusion that shipping sixteen steam generators from Canada to Sweden followed current industry practice and in some instances exceeded it — notably by using an INF ship — with practically no radiological risk to the population or the environment (House of Commons of Canada). And on the chronic problem of shipments being delayed or denied — more than 20 million packages of radioactive material need transport each year — WNTI’s outgoing chief executive spoke at the September 2026 presentation of the IAEA Denial of Shipment Working Group’s White Paper, which was finalised in April 2026 (World Nuclear News).

The 2025–2026 turn: a conference, a strategy and a new chief executive

For most of its history WNTI worked as a back-room standards body. In 2025–2026 it stepped onto a bigger stage. In November 2025 it held its inaugural World Nuclear Transport Conference in London, drawing experts from over 18 countries under the theme “Navigating the Future: Powered by Nuclear, Delivered by Transport” (Nuclear Engineering International). The programme covered new fuels, marine nuclear propulsion and microreactor deployment, with senior figures from the IAEA, IMO, OECD Nuclear Energy Agency and the International Commission on Radiological Protection discussing regulatory reform, and sessions on sustainability, skills and the psychology of public perception (Nuclear Engineering International). One message dominated: if transport is not ready, the nuclear future will be delayed — and a lack of appropriate packaging is already the main barrier to unlocking advanced and small modular reactors (Nuclear Engineering International).

The same month, WNTI launched its 2025–2030 strategy, built on three aims: strengthening its presence with the IAEA, IMO, OECD NEA, ports, competent authorities and policymakers; acting as a delivery platform through member-led Committees and Task Groups, technical guidance, position papers and events; and preparing the sector for new technologies, from advanced fuels to transportable nuclear power plants (World Nuclear Transport Institute). A Centre of Excellence for skills and training and a Clear Pathways initiative for public understanding were among the flagship commitments, underpinned by a stated commitment to environmental, social and governance principles (World Nuclear Transport Institute).

Months earlier, in July 2025, WNTI had signed a Memorandum of Understanding with the Nuclear Energy Maritime Organisation (NEMO) on nuclear-powered shipping and transportable nuclear power plants: WNTI to focus on the safe transport of nuclear materials and the plants themselves, NEMO to lead on nuclear-powered and propelled ships, and both to collaborate on floating nuclear power plants while engaging the IAEA and IMO on standards and regulation (SAFETY4SEA). The context is decarbonisation: shipping accounts for around 2.9% of global carbon emissions, and transportable plants could supply clean electricity, high-temperature heat, hydrogen production or seawater desalination to places with limited grid access (Port Technology International). NEMO itself had been formed only in March 2024 by HD Hyundai Shipbuilding & Offshore Engineering (KSOE) with other nuclear energy organisations (SAFETY4SEA).

Then came a leadership handover. Derek Ray-Hill was appointed Chief Executive in September 2026, succeeding Professor Pete Bryant, who was described as outgoing CEO when he spoke at the IAEA White Paper presentation later that month (World Nuclear Transport Institute; World Nuclear News). A second World Nuclear Transport Conference was already being organised for Singapore, suggesting the 2025 gathering was intended as the start of an annual forum rather than a one-off (World Nuclear Transport Institute).

Who sets the rules for nuclear transport?

Body	What it does	WNTI’s relationship to it
International Atomic Energy Agency (IAEA)	Sets the international package safety standards (SSR-6) and runs the TRANSSC revision process; convenes working groups on shipment delays and denials	Observer/consultative standing since 1999; attends TRANSSC since 2000; its outgoing CEO spoke at the 2026 White Paper presentation
International Maritime Organization (IMO)	Writes the maritime rules: SOLAS, MARPOL, the IMDG Code, the INF Code and the Nuclear Code for nuclear merchant ships	Consultative Status for 20+ years; participates in MSC, FAL, MEPC and CCC; its 2024 gap analysis became the basis for the Nuclear Code review
National competent authorities	License package designs on the basis of a safety case and enforce transport rules nationally	Works with them through standards, guidance and the IAEA’s National Focal Point network (75 focal points as of August 2026)
World Nuclear Transport Institute (WNTI)	Industry body: standards, good-practice guides, fact sheets, working groups, and a collective industry voice	The sector’s own coordinator — not a regulator, but the channel through which operators, miners, carriers and package designers feed into the bodies above

FAQ

What is the World Nuclear Transport Institute? It is a London-based international membership body representing the nuclear transport industry, founded in 1998 by British Nuclear Fuels, Cogema and Japan’s Federation of Electric Power Companies. It writes industry standards, runs working groups, and represents the sector at the IMO and IAEA (World Nuclear Transport Institute).

Is WNTI a regulator? No. WNTI is an industry body with consultative and observer standing at bodies such as the IMO and IAEA. It does not license packages or enforce rules; national competent authorities do that, using standards set by the IAEA and IMO that WNTI helps to shape (IAEA INIS).

What is the INF Code, and what does WNTI have to do with it? The INF Code is the IMO instrument governing ships that carry irradiated nuclear fuel, plutonium and high-level radioactive waste. WNTI publishes a fact sheet explaining its requirements, from damage stability and fire protection to emergency plans and SOLAS surveys, for operators who must comply with it.

What did WNTI’s 2025–2030 strategy change? It repositioned WNTI from a standards body to a delivery platform, with three aims: stronger global influence, member-led Committees and Task Groups producing guidance, and preparation for new technologies including transportable nuclear power plants, plus a Centre of Excellence for skills (World Nuclear Transport Institute).

Who leads WNTI? Derek Ray-Hill became Chief Executive in September 2026, succeeding Professor Pete Bryant. Bryant had fronted the Institute’s public turn, opening the inaugural World Nuclear Transport Conference and speaking at the IAEA’s denial-of-shipment White Paper presentation as outgoing CEO (World Nuclear News).

What this profile does not claim

This profile does not present WNTI’s statement that no transport incident has caused significant radiological damage in over 50 years as independently verified fact — it is the Institute’s own claim, and no accident register was consulted to check it. It does not state an exact current membership count, a current street address, or the Board’s composition, none of which was verified from a full-read source. It does not name a predecessor organisation for WNTI, since no source confirmed one, and it does not describe Derek Ray-Hill’s background or prior roles. It does not treat the Namibian Uranium Association’s “40+ companies” figure as WNTI’s own published count. Finally, it does not cover the content of any WNTI–IAEA Practical Arrangement, which was not verified from a full-read source.