Blackplan is a specialist incident management and assistance centre for Africa, but there are many other organisations that have developed comprehensive guidelines and support for organisations wishing to set up their own incident systems and procedures:
The American Red Cross Ready Rating program is a free, self-guided program designed to help businesses, organizations and schools become better prepared for emergencies. The Resource Center section is particularly useful.
Ready is an American national public service designed to educate Americans to prepare for and respond to emergencies including natural and man-made disasters. The website has information, warnings and preparedness toolkits.
The website of the Federal Emergency Management Agency of the USA is a wealth of information on everything from setting up an ICS to situation-specific Emergency Plans.
The Centers for Disease Control have a useful Emergency Preparedness section with up-to-date medical information and warnings.