printable banner

U.S. Department of State - Great Seal

U.S. Department of State

Diplomacy in Action

CTBTO Preparatory Commission


Fact Sheet
Bureau of Arms Control, Verification, and Compliance
July 24, 2013

Share

Key Point: The Preparatory Commission (PrepCom) for the Comprehensive Nuclear Test-Ban Treaty Organization (CTBTO) was created to carry out the necessary preparations for the effective implementation of the Comprehensive Nuclear Test-Ban Treaty once it enters into force. The PrepCom establishes and manages the development of the institutions for international data collection, analysis and dissemination that will contribute to Treaty verification. It also works to encourage additional states to sign and ratify the Treaty.

The PrepCom is based in Vienna, Austria, and is composed of all States that have signed the Treaty. It is responsible for ensuring the development of the verification regime, so that it is operational when the treaty enters into force. The PrepCom is also responsible for preparing for the first session of the Conference of the States Parties, at the conclusion of which the PrepCom will cease to exist. In addition to its member States, the PrepCom has established a Provisional Technical Secretariat, staffed by more than 260 people from over 70 states, which has the following duties:

  1. Manage the overall installation and provisional operations and maintenance of the International Monitoring System (IMS).
     
  2. Operate the International Data Centre (IDC), which receives data from IMS stations, analyzes and produces monitoring reports, and disseminates the IMS data and its IDC products to State Signatories.
     
  3. Prepare for the conduct of the on-site inspection element of the verification regime.
     
  4. Provide other support to the members of the PrepCom.

Sign-in

Do you already have an account on one of these sites? Click the logo to sign in and create your own customized State Department page. Want to learn more? Check out our FAQ!

OpenID is a service that allows you to sign in to many different websites using a single identity. Find out more about OpenID and how to get an OpenID-enabled account.