Phase

Three technical working groups were established for both Phase I and Phase II. These working groups have taken on specific projects, tasks, and collaborative activities focused on nuclear weapon dismantlement.

The current Phase II working groups are:

Verification of Nuclear Weapon Declarations
The main focus of this working group will be on how to verify a declaration of a number of nuclear weapons in a state. This working group is co-chaired by the Poland and the United Kingdom.

Verification of Reductions
The main focus of this working group will be on how to verify the reduction of a declared number of nuclear weapons in a state. This working group is co-chaired by Australia and the Netherlands.

Technologies for Verification
The main focus of this working group will be to identify and advance a limited number of key verification technologies. This working group is co-chaired by Sweden and the United States.

The Phase I working groups were:

Monitoring and Verification Objectives
This working group examined key objectives for monitoring and verifying the dismantlement of a nuclear weapon, including the information, skills, and expertise needed to support this process. This group was co-chaired by the Netherlands and the United Kingdom.

On-Site Inspections
This working group explored lessons learned from various on-site inspection regimes and identified a number of common principles and inspection procedures that can be applied to the Partnership’s work. This group was co-chaired by Australia and Poland.

Technical Challenges and Solutions
This working group investigated effective technologies, methods, and procedures that can be used for specific technical challenges in the dismantlement process, such as identifying a nuclear device, maintaining chain of custody, and protecting proliferation sensitive material. This group was co-chaired by Sweden and the United States.