Worked in the business of almost 38 years, lifetime dose is around 38 Rem. Not proud of it, wish that they had used the same principles back in the old days thay they use now. But that's life. Have spent almost equal time in B's as P's and about 5 years in DOE. Rad teching has changed and the coverage methods highly improved (remote cameras and dose monitoring equipment and techniques. More concerns for worker exposure as well as the techs nowadays. Stay away and use common sense, if your not sure don't do it without stopping and thinking before acting and always ask because today someone has already done it and advise is always beneficial. Stupidity and showmanship has no place in todays business.