Tanker driver question

The guy told me Tuesday that it was about 10 pounds of pressure. I did not think to look at the pressure gauge.

 

Ya, better communication sounds good. At this facility, they do everything themselves. They hook up and unload everything. I just have to verify that there's room in their holding vessel and that they are properly grounded. I usually walk around and do my pretrip while I'm waiting. Today I was going to just open the back end. The big valve and relieve it that way but the guy at the plant wouldn't allow me to. He said I had to use the small valve. I'll probably just wait until I get back to the office from now on to do it. Everyone on my team says it can wait until I get back to the terminal to be relieved.

 

I did speak with my coworkers and my boss. They said they usually depressurize the tank before we leave. Currently they are having personnel issues due to Covid-19 and someone else is filling in. My boss said it should be ok if I release the pressure when I get back to the terminal.

 

I do go around and verify that it's closed up. This is only my 3rd delivery on my own. When my trainer was with me the guy whom off-loaded us was depresserizing the tank. This is why I asked the question. I'm new and didn't know either way the correct procedure