Broadly speaking, a confined space is an area that is large enough for a worker to enter and do work, but that is difficult to get in and out of easily, and not designed or intended for regular occupancy.
Appendix A to federal OSHA’s 1978 lead standard (current today) provides that blood lead level (BLL) of workers, both male and female, who intend to have children should be maintained below 30 micrograms per deciliter (ug/dL) “to minimize adverse reproductive health effects to the parents and to the developing fetus.
The appropriate safety gear is a critical part of making sure your teams go home safely to their families. It can be tempting to make the decisions based solely on the per-unit purchase price. But when it comes to keeping your people safe, reliability, durability, and usability should be priorities.
I approached a couple of employees, and asked if one of them would volunteer to wear an air sampling pump. One employee, "If you tell me who you voted for president, I might wear the pump." I knew at that point that I'd get some honest results from industrial hygiene (IH) sampling.