Work permit system

Work permit system is essentially a document that categorically spells out the task, equipment involved,its location, personal involved,time limitations, precautionary measures to be taken together with likely hazhars to be encountered if any.
Common type of work permit

1. 1.Hot work permit
2. Safe entry permit
3. Accident area permit
4. Working at height
5. Cold work permit
6. Electrical work permit

HEPBORN'S THEORY of accident

An injury accident can occur as a result of the convergence of the four factors ie. unsafe action, unsafe condition, personal factors and proximate casual factor. The proximate factor is the immediate causative factor, ( eg.failure brake) which by its reaction causes sudden closing together or convergence of the four factor to cause an injury accident.The four factor are complementary to each other .If any one is withdrawn, during or just before convergence an injury accident is averted.