While performing the duties of this job, the employee is occasionally exposed to moving mechanical parts, extreme cold or heat (non-weather), risk of electrical shock, risk of radiation, fumes or airborne particles, compressed gases or air, liquid nitrogen, hot work, infrared laser, hazardous chemicals, powered tools, hand tools, knives, and wet or humid conditions (non-weather). While performing the duties of this job, the employee is frequently required to stand, sit, use hands to finger, handle, or feel objects and reach with hands and arms.