Only those with appropriate training must operate heavy machinery such as bulldozers, tractors and leveling machines. If you operate this type of machinery, turn it off before leaving and secure it to prevent it from moving.
STRUCTURAL UNSTABILITY:
Flood waters may damage or shift natural roads, sidewalks, parking lots, buildings and open spaces. Never assume that structures damaged by water are stable. Buildings under water or that have resisted water currents during a flood may have suffered structural damage and might be dangerous. Do not work in or around a building that has been damaged by the flood until it has been examined and certified as safe by a professional registered architect or engineer. Assume that all the stairs, floors and ceilings are unsafe until they have been verified. If you witness structural shifting or hear unusual noises that may indicate the possibility of collapse, exit immediately.
HAZARDOUS MATERIALS:
Flood waters can drag tanks, barrels, tubes and equipment containing hazardous materials such as pesticides or propane. Do not try to move unidentified containers before getting in touch with the fire department or hazardous material professionals. If you work in areas that might be contaminated, wear protective clothes and appropriate masks to avoid skin contact or inhaling fumes. Get in touch with NIOSH for more information about appropriate safety gear. Wash the skin frequently and thoroughly in parts where it may be exposed to pesticides and other dangerous chemical materials.
FIRES:
For several reasons, a fire may pose a serious threat in an area already damaged by a flood: Protection systems against fires may be damages, this may hinder the fire department’s response, and water supplies might be interrupted. For this reason workers and employees must take additional preventive measures. In every work area, at least two extinguishers must be provided, each with a UL (Underwriter Laboratories) classification of at least 10A.
RISK OF DROWNING:
When in water currents, you are at risk of drowning, no matter your swimming abilities. Since those in a vehicle are at most risk of drowning, it is important to comply with any danger warnings in roads and avoid handling vehicles or heavy equipment in water whose depth is unknown. NIOSH recommends to avoid working alone, and to wear a life vest approved by the Coast Guard when working in or near flood water.
PREVENTION MEASURES
First aid
First aid, even for small cuts and burns, are extremely important in case of exposure to water that may be contaminated with animal or human waste, or toxic waste. Immediately wash all open wounds and cuts with clean soap and water. Most cuts, except for superficial scratches, will require treatment to prevent tetanus. If you are injured, talk to a doctor to find out what treatment you need.
Protective gear
For most work in flooded areas, the following personal protection gear will be needed: helmets, goggles or glasses, resistant gloves and impermeable boots with steel toe and sole protection (not only the shoe shank). For information about gear needed for protection, get in touch with NIOSH or your local OSHA office.
Excessive noise of chainsaws, bulldozers, tractors, pavement breakers, blowers and dryers may produce buzzing and hearing injuries. If you work in a noisy environment and must yell to be heard by others, wear ear plugs or other protective devices.


