CAS (Condition Assessment Scheme) survey requirements are contained in the current Publication No 36/P – Hull Surveys of Oil Tankers.
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Overall survey
CAS requires that an overall survey of hull structure in way of cargo tanks, pump rooms, cofferdams, pipe tunnels, void spaces within the cargo area and all ballast tanks be performed.
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Detailed survey
Detailed requirements of close-up survey at the CAS survey are the same as those of 4th class renewal survey contained in PRS Rules. The acceptance criteria for CAS are those set out in the International Code on the Enhanced Programme of Inspections during Surveys of Bulk Carriers & Oil Tankers (2011) (2011 ESP Code) where for the acceptance criteria, there are no differences between CAS and the class survey.
