This section applies to all research laboratory facilities, including leased properties. It covers all unfired pressure systems including vessels (i.e., storage tanks; compressed gas cylinders, cryogenic dewars) that have been designed to operate at pressures above 15 psig. This does not cover fired pressure vessels or utilities (i.e., boilers, “house air”) inspected and maintained by Physical Plant, nor does it apply to medical patient-care facilities and medical gas systems. (NFPA-99 “Health Care Facilities” may be consulted for guidance on pressure systems, but this standard does not apply to research laboratories.)