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NUCLEUS information resources

The IAEA's NUCLEUS information resource portal provides access to over 110 scientific, technical and regulatory resources, including databases, applications, publications and training material. As it is mainly meant for IAEA counterparts in the government, industry and scientific community, NUCLEUS hosts a number of resources that require registration. Many sites, however, can be accessed without a password.

Safeguards Implementation Practices (SIP)

​This site provides access to IAEA safeguards guidance on several related topics, primarily addressing the implementation of comprehensive safeguards agreements and additional protocols, good safeguards practices, facilitating IAEA verification activities, safeguards infrastructure and the formatting and submittal of information to the IAEA.

Safeguards Support Programme Information and Communication System (SPRICS)

SPRICS gives Safeguards Member State Support Programme stakeholders access to task proposal information, task information, meeting information, and point of contact information.

SAGSI on Nucleus – Standing Advisory Group on Safeguards Implementation (SAGSI)

SAGSI advises the IAEA Director General on the technical aspects of IAEA safeguards.

Site and Seismic Safety

The EESS portal is a platform and working space for registered users that allows them to collaborate on extrabudgetary IAEA projects related to the siting of nuclear installations.

Spallation Models

This site provides access to the IAEA Benchmark of Spallation Models. Spallation reactions are nuclear reactions in which a heavy nucleus emits a large number of nucleons as a result of being hit by a high-energy particle. 

Stopping Power

This resource gives access to a collection of data, graphs and computer programmes dealing with the ranges of various ions (from protons to uranium) in materials.


A website for registered users in the IAEA and in Member States that provides detailed information about all ongoing and completed technical cooperation projects, as well as various summary financial reports. 

TC Programme Cycle Management Framework

The PCMF is a platform for users to develop and manage IAEA technical cooperation projects from project concept submission through project design, approval, implementation and evaluation.


​This site provides a shared space for programme management to project team members of technical cooperation projects for the region of Latin America and the Caribbean.

Thermal Neutron Capture Gamma-rays

This site presents the energy and photon intensity of gamma rays as seen in thermal-neutron capture in two tables, one in ascending order of gamma energy and a second organized by Z, A of the target.

Thermo-Physical Materials Properties Database of LWRs and HWRs

THERPRO is an online database of materials for light and heavy water reactors, providing material properties to the registered and authorized users in IAEA Member States.

Two-body relativistic kinematics code

This interactive computer programme allows the relativistic calculation of two-body reactions.


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