"Only open the deck
fill plate with which you are actively working and no other"
For example, never ever, open fuel
fill plates at the same time. I reminded myself of this little lesson yesterday. Water
fill was open because the rain catchment was installed and I went to add some diesel
from a jerry jug via the deck
plate next to it...spout came off the jerry jug spilling diesel
on the deck...some of which slopped into the water tank...guess what I now get to spend a day doing! (...what do you do all day?)
Corollary: deck fill plates of different types (water vs fuel) should never be located close to each other. I've seen boats with them all lined up in a neat little row...this is an accident
waiting to happen.