"Joint work with the Syrian authorities has begun on securing the sites where the team will operate," said the statement, which detailed the activities of the team's first day of work yesterday.
"In addition, planning continues for one of the team's immediate tasks, disabling Syria's chemical weapons production facilities, which should begin soon."
The OPCW team of 19 disarmament experts arrived in Damascus on Tuesday.
They are overseeing the implementation of a UN resolution which orders Syria's chemical arsenal destroyed.
The OPCW team faces a daunting task, as President Bashar al-Assad's regime is understood to have more than 1,000 tonnes of the nerve agent sarin, mustard gas and other banned chemical weapons.
Yesterday, the team also considered "the health and environmental hazards which they may have to confront", said the joint statement.
"Meanwhile, discussions on the size of Syria's stockpiles are also under way, as well as long-term planning, so that deadlines unanimously imposed by the executive council of the OPCW and the UN Security Council are met," it added.
"In their discussions with the authorities, the OPCW-UN team was keen to stress that the onus was on the Syrian government to meet the verification and destruction deadlines," said the statement.
