For any absences from Cambridge of over 2 weeks, you must first apply to the Student Registry for "leave to work away". This can be done via your CamSIS Self-Service. Please note that the process has various stages of approval, therefore you should begin this process a reasonable time before your intended departure date (and it cannot be granted retrospectively). Such permission is not usually granted by the Student Registry until after the Registration for the PhD has been secured.
Any dates you spend away from Cambridge, whether for vacation or to conduct fieldwork, must be recorded so please inform the Graduate Office (either by email or in person) of the date of your departure and the date of your return to Cambridge.
Graduate students can apply for cover from the University's Travel Insurance policy while they are working away from Cambridge (as long as you have applied for permission to work away - see above). Full information, and the application form, can be found on the Insurance Section website.
If you didn't complete a Fieldwork Risk Assessment when you submitted your Feasibility Report, or if you will be visiting a different field site, you should complete a new form before embarking on your fieldwork. The form is available at the link below, and once completed and signed by your supervisor, should be sent to the Graduate Administrator.
It is advisable to familiarise yourself with the Department's Fieldwork Safety Handbook