Expanding on
@Warped9 comment: Would work pods be actually
on the TOS Enterprise, or would they just be Starbase/Space Station equipment? Per Jefferies' words on the sketches, he calls these vehicles
Space Port Utility Craft and
Space Tug/Service Vehicle which are used to move bulky things/cargo/ships around
Space Repair Dock (Shipyards). They don't look like they are present on the Space vessels in the 2260's, rather are found in Space Docks, etc. and they are not used to repair anything. Per Jefferies, most repairs are done from the inside of the ship. For spaceships on their own, stuff can be moved around the ship, inside and outside, with either antigravs or tractor beams. External repairs on the hull can be done by people in space suits. That's the technology we see/hear in TOS.