In daily activities of the project management team, there are a lot of abbreviations. It is a problem to the junior engineer and also for the senior as he/she can hear abreviation but he/she shame to ask what are you saying? As he afraid from the speaker to say Are you do not know that word?!. So he/she shall not ask and consequent he/she can not undersatnd the massage at the end.
Really the default to the speaker as if he feehs that the attendees not know about this abbreviation he should clarify it. If you know the abbreviation it is not mean that you are an excelent engineer or project manager..just ask WHAT ARE YOU SAYING? ..
I try to collect all the abbreviation here it is general for any field but it is slightly towards oil and gas field project management. If you think I forget any abbreviation contact me and send it to me to add or to be in the comment below.