Search results
Results from the WOW.Com Content Network
The Hindenburg disaster is an example of a large hydrogen explosion. Hydrogen safety covers the safe production, handling and use of hydrogen, particularly hydrogen gas fuel and liquid hydrogen. Hydrogen possesses the NFPA 704's highest rating of four on the flammability scale because it is flammable when mixed even in small amounts with ...
The term immediately dangerous to life or health (IDLH) is defined by the US National Institute for Occupational Safety and Health (NIOSH) as exposure to airborne contaminants that is "likely to cause death or immediate or delayed permanent adverse health effects or prevent escape from such an environment." Examples include smoke or other ...
Many gases have toxic properties, which are often assessed using the LC 50 (median lethal concentration) measure. In the United States, many of these gases have been assigned an NFPA 704 health rating of 4 (may be fatal) or 3 (may cause serious or permanent injury), and/or exposure limits (TLV, TWA/PEL, STEL, or REL) determined by the ACGIH professional association.
The mission of a medical surveillance program is to keep workers healthy and ensure that employers are meeting OSHA standards in health and safety. [5] Medical surveillance has an emphasis on prevention: it is designed to detect potential workplace hazards before irreversible health effects can occur. [6]
Stink damp: so named for the rotten egg smell of the hydrogen sulphide gas, stink damp can explode and is also very toxic. White damp: air containing carbon monoxide which is toxic, even at low concentrations; Firedamp explosions can trigger the much more dangerous coal dust explosions, which can engulf an entire pit. Most of these risks can be ...
Hydrogen cyanide gas was strongly suspected. [85] [86] In 1995, a device was discovered in a restroom in the KayabachÅ Tokyo subway station, consisting of bags of sodium cyanide and sulfuric acid with a remote controlled motor to rupture them, in what was believed to be an attempt by the Aum Shinrikyo cult to produce toxic amounts of hydrogen ...
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
A comprehensive 2005 study concluded that "the mental health impact of Chernobyl is the largest public health problem unleashed by the accident to date". [20] Frank N. von Hippel , a U.S. scientist, commented on 2011 Fukushima nuclear disaster , saying that "fear of ionizing radiation could have long-term psychological effects on a large ...