FSM

FSM

Hello, I have a question regarding the FSM system.
Currently our company has setup the FSM which has two major parts, Requests and Work Orders.
The system is set for Requests and Workorders to communicate with each other. 
Currently Request has 45gb of storage, which I believe because it is storing all the photos from workorders.

How would I fix this? Is is possible to delete all the attachments from the requests?