Three of the jobs on this list have no equivalent anywhere else on our work. Grease management is sold elsewhere as cleaning and is really fire safety: the radiants, the tray and the channel are a system for keeping rendered fat off open burners, and when it stops working the grill sets about the food.
Gas supply and regulator work exists because the run feeding an outdoor island was made, tested and then sealed inside masonry, and it has been ageing in salt air ever since where nobody can see it. And the salt air protection visit exists because four of these machines stand outside, where distance from the water is a better predictor of service life than the age on the plate.