SCOMET Category 0 - Nuclear Materials, Equipment and Technology

Published: March 2, 2026 | By: TariffWolf Team

SCOMET Category 0 is arguably the most sensitive category in India’s export control framework. It covers materials, equipment, and technology directly related to nuclear energy and nuclear weapons. Unlike all other SCOMET categories handled by DGFT, Category 0 falls under the exclusive jurisdiction of the Department of Atomic Energy (DAE). This deep-dive examines what Category 0 covers, the key items and thresholds, and what exporters need to know.

What Category 0 Covers

Category 0 is organised into several sub-categories covering the full spectrum of nuclear-related items:

• 0A - Nuclear materials including source materials (natural uranium, depleted uranium, thorium), special fissile materials (plutonium, enriched uranium, uranium-233), and other nuclear-grade materials like zirconium, deuterium, and tritium.
• 0B - Nuclear facilities and equipment including nuclear reactors, fuel element fabrication plants, enrichment equipment, reprocessing equipment, and heavy water production equipment.
• 0C - Nuclear-grade materials with specific purity or composition thresholds - such as zirconium with hafnium content less than 2000 parts per million (0A303).
• 0D - Nuclear-related software for designing, modelling, or operating nuclear facilities.
• 0E - Nuclear technology including technical data, manufacturing know-how, and engineering designs for items controlled under 0A and 0B.

Key Items and Classification Thresholds

Many Category 0 items are controlled only when they meet specific technical thresholds. Understanding these thresholds is critical for correct classification:

SCOMET Code	Item	Control Threshold
0A303	Zirconium (metal, alloys, compounds)	Hafnium to zirconium ratio less than 1:500 by weight (< 2000 ppm)
0A001	Natural and depleted uranium	Any quantity (no threshold)
0A002	Special fissile materials	Any quantity (no threshold)
0B001	Nuclear reactors	Complete reactors and major components

DAE - The Licensing Authority for Category 0

The Department of Atomic Energy (DAE) is the sole licensing authority for Category 0 items. This means:

• SCOMET applications for Category 0 items do not go through the standard DGFT portal process.
• Applications are submitted directly to DAE through their prescribed process.
• DAE coordinates with the Nuclear Suppliers Group (NSG) guidelines and India’s nuclear cooperation agreements when evaluating applications.
• Processing times may differ from DGFT-administered categories.

Category 0 vs Category 4 - The Common Confusion

One of the most frequent classification errors involves confusing Category 0 with Category 4. Both relate to nuclear items, but they serve different purposes:

• Category 0 covers items that are specifically designed or produced for nuclear use - nuclear-grade materials, reactor components, enrichment equipment.
• Category 4 covers items that are dual-use - they have legitimate civilian applications but could also be used in a nuclear programme. Examples include high-speed cameras, mass spectrometers, and certain types of vacuum pumps.

When an item could fall under either category, the Commodity Identification Notes in the SCOMET list provide override rules. Generally, if an item is specifically designed for nuclear use, Category 0 takes precedence.

NSG Alignment

Category 0 is closely aligned with the Nuclear Suppliers Group (NSG) Trigger List (Part 1 of the NSG Guidelines). India, while not a formal NSG member, voluntarily adheres to NSG guidelines and has harmonised its Category 0 entries with the NSG control list. This alignment is part of India’s broader commitment to nuclear non-proliferation and its pursuit of NSG membership.

Practical Guidance for Exporters

• Check hafnium content carefully - for zirconium exports, the hafnium threshold (2000 ppm) is the deciding factor. Get a certified lab analysis if your supplier cannot confirm the exact ratio.
• Technology transfers count - sharing nuclear-related technical data, designs, or manufacturing processes with foreign entities requires DAE authorisation, even if no physical goods leave India.
• Contact DAE directly - for Category 0 classification queries, the DGFT helpdesk cannot assist. Reach out to DAE’s export control division.

Use the SCOMET AI Assistance chatbot to quickly check whether your item falls under Category 0 or Category 4.

Disclaimer: This article is for informational purposes only and does not constitute legal advice or an official classification determination. Always verify with the Department of Atomic Energy (DAE) before exporting Category 0 items.

SCOMET Category 0 Nuclear DAE Deep-Dive