Inspections are designed to verify compliance of States Parties with the requirements imposed on production and use of scheduled chemicals and to verify that industrial activities of member states have been correctly declared according to the obligation set by the CWC. The intensity and frequency of the inspections is dependent on the type of chemical produced (in descending order: Schedule 1, Schedule 2, Schedule 3 or DOC, see Scheduled Chemicals), but is regardless of the standing of the member state. For Schedule 1 and 2 facilities, a mass balance is prepared to identify whether all produced chemicals can be accounted for and whether the amounts are consistent with the declarations made by member states. Furthermore, at Schedule 2 and 3 facilities clues are investigated whether, contrary to the declaration and to the rules in the convention, Schedule 1 chemicals are produced. At Schedule 3 and DOC, the main aim is to check the declaration and to verify the absence of Schedule 2 and Schedule 1 production units. The time limit Schedule 2 inspections is 96 hours while Schedule 3 and DOC inspections can take a maximum of 24 hours. There is no time limit on Schedule 1 inspections.
Challenge inspections and investigations of alleged use
In case of allegation of use of chemical weapons or the prohibited production, a fact finding inspection can be employed according to the convention. None of those activities have yet taken place. The OPCW only undertakes these inspections on request of an other member state, after verification of the presented proof. To avoid misuse, a majority of two thirds can block a challenge inspection request. Furthermore, the OPCW can only be involved after bilateral diplomatic solutions have failed.