I'll note that because of the regular petty thievery at ISI that's been experienced over the years, the RCN pulls off all of our fire-fighting gear when we send a ship into refit there.
We had a couple of ships come out with every one of the hoses on all hose stations requiring replacement due to the hose-ends being cut off (a pound of brass each, times 4 hoses = about 8 pounds of brass per hose station, which ends up being worth about $15-17 in scrap metal. Add to that all the lazy-rod covers, and anything else brass that could be fit into a lunch-box, and well, you end up with a decent amount of scrap brass to steal.
Add to that, the ISI workers using our fire extinguishers for their sentry duties, and not bringing them back...or just taking them completely off the ship when they leave, and you have a big problem.
Some of the crew berthing areas end up having to be locked so that ISI workers don't take a nap during their work day, and basically, there's a whole lot of extra work that goes into getting these spaces secured, then opened for 'work' during a Docking at ISI.
If one of our ships undergoing an 'unmanned' refit in ISI caught fire, we'd be in a similar state.