What Does High Hemoglobin Mean? High hemoglobin levels mean that measured hemoglobin levels are above the upper limits of normal for the age and sex of the person (see above normal values). For example, a 19 year old that has a detected hemoglobin level of above 17.7 g/dl would have a high hemoglobin level.
Some chemical engineers specialize in a particular process, such as oxidation (a reaction of oxygen with chemicals to make other chemicals) or polymerization (making plastics and resins).
Other chemical engineers are employed at refineries and industrial plants, where the engineer is expected to respond in case of an emergency at the plant, which could mean exceeding a 40-hour workweek. Some chemical engineers commonly work 45 to 50 hours a week in a plant or refinery environment. Some chemical engineering jobs call for extensive travel to and from worksites within the U.S and abroad, which can also push the total working hours above full time.