STEP 7: DECONTAMINATION curb Valves


As mentioned in Chapter 3, a curb valve or “curb box” is located in a circular or square box in the street, sidewalk, or parking lot. It is protected by a se- cured cover that may have a nut holding it in place. The responder uses a key provided by the utility and removes the cover to expose a valve that, like the service meter, needs only to be turned a quarter turn clockwise to shut the flow of gas. Do not confuse curb valves with main valves in the street. Consult the local utility company with regard to below-grade or underground valves. Remember, main valves are distribution valves and should not be shut by emergency responders. Don’t wait until the emergency to find the curb valve or service meter. Pre-plan and identify these important tactical devices before the emergency.


Customer Service Curb Valve Cover


Customer Service Curb Valve FIGURE 4.22 Shutting curb valves.


SaFETy nOTE—Once any valve is closed in an emergency, the fire depart- ment should wait until the utility company personnel arrive and let them open the valve.


Step 7: Decontamination and clean-up Operations


Decontamination is a major concern with many hazardous materials. But in the case of natural gas, it is probably of the least concern of all the eight step items. There is little need for extensive Decon. However, be aware that some Decon may be needed for the odorant, which can persist and permeate gar- ments and gloves. This can cause problems, since it is a flammable and ex- tremely toxic product. Clothing may need washing to remove the odor.


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