Digitized image data provided by plural diverse non-destructive test apparatus is organized in a common format and routed, via a high speed continuous ring-type data transmission network, to a mass data storage system for redundant storage. Stored image data retrieved from storage may be placed on the network for transmission to a display console for image recreation. Through the use of group addressing, non-image data processing devices may use the data transmission network without establishing an interactive relationship with the storage system.