Enclosed Vestibule : A non-air-tight antechamber with an outer and anterior door for safe access through confinement barriers. The antechamber limits the air flow across confinement barriers
Department of Energy AREA SDMP, DOE Handbook, Glossary of Environment Safety and Health Terms, DOE-HDBK-1188-2006, D.C. 20585, USA 2006. http://www.hse.niordc.ir/uploads/86_24_dictionary_ 2006.pdf, (Envir Hlth and Sfty - Amer) {44}