Mechanical engineering problems in preserving biological objects by temperature lowering
Dvorák, Z.
Sbornik Vedeckych Praci Lekarske Fakulty Karlovy University V Hradci Kralove 33(2): 115-125
1990
ISSN/ISBN: 0049-5514 PMID: 2098900 Document Number: 357983
Analysis of dangers caused by mechanical refrigerating and liquid nitrogen systems used for low temperature preserving of biological material and safety measures to be adopted. Hazards are caused by moving or protruding parts of the machinery, its hot parts, noise and vibration, work in cold rooms, possible destruction of pressure vessels, refrigerant inflammation or explosion, breathing the refrigerant or its decomposition products, direct contact of the refrigerant with the skin or mucous tissues, depletion of stratospheric ozone or contamination of food-stuffs.