On the new version of the MSC CoC there is a new requirement for which the Minimun duration of the audit in some cases has to be 1,5 MD in situ ( minimun duration) ( MSC CoC 7.1.3). Y check the web of the CPI tranparency of Thailand; 38, and as the client has an activity of Risk ( Processing), this is the quotation you has to use (minimun duration):