

Tank overfill
Edit: Final update at bottom of post
I have two 1000g propane tanks (primary and secondary) for our home. They're a gravity style system, with the backup tank being slightly uphill from the primary. They were filled today and the backup was filled to 100% and the primary to 70%. The field supervisor said it wouldn't be an issue because the pressure would be relieved from the backup to the primary. And it'd only be an issue if they both were filled to 100%. 1st Photo is of regulator and primary tank with feed line on left of regulator from backup tank which is out of frame. 2nd photo is of backup tank.
Everytime it's been filled over the last 3 years we've been here, we've never been filled over 80% in either tank and was under the impression you never fill to 100 regardless of the system. So I'm questioning what they're telling me and if it is indeed a problem I want to get them back out here asap to rectify it. Any thoughts from the pros?
- I know the tanks need to be painted, it's on the schedule over the next couple weeks before the weather starts really heating up.
Update: Shut off the overfilled tank and called the propane supplier's emergency line. No answer, left a voicemail. Current temps are in the low 40's, expected low 50's by mid morning. Tanks are located under dense oak canopy, so very cool spot. Will call again first thing in the morning and raise hell. Thanks for heads up everyone!
Update 2: I just got a call back (730am) from the propane company after calling the emergency line last night (10pm) and leaving a message. The lady I spoke with was very apologetic and is sending a different technician out asap to drain the tank to a safe level and inspect the system.
Final update: Senior service tech and regional supervisor showed up this morning around 930. Explained this whole situation was unacceptable and they agreed. The service tech basically confirmed what other folks on here said and that the driver that did the fill is an idiot (he used a few other choice words...). They verified no liquid made it into the system, but as an extra safety precaution they replaced both regulators and installed an extra shutoff valve between the two tanks. They drained the secondary tank down to 80% and transferred some of it to top off my primary (which was underfilled). Obviously no charge for any of it and they're discounting my account for the original fill as an additional courtesy. Reading between the lines, I don't think the driver that messed up this fill will be working there after this.