FUMIGATION WORKER SAFETY • 99
when the fumigant is introduced
when anyone enters the enclosed space to facilitate aeration
when anyone enters the enclosed space to determine the fumigant concentration
In all of these cases, personal protective equipment must be worn when it is required by the pesticide product label or the regulations. The second employee must have immediate access to the label-required personal protective equipment for pesticide handlers, in case it becomes necessary to enter the fumigated enclosed space for rescue.
The only exception is when solid fumigants, including aluminum phosphide, magnesium phosphide, and smoke cartridges, are introduced into the enclosed space from a position outside the enclosed space. In these cases only one trained employee must
be present. The employer must ensure that the hazard communication and worker safety requirements outlined in Chapter 5 of this study guide are met.
Warning Signs. Before you start any fumigation, you must post plainly visible warning signs (see Sidebar 9) at all entrances to the space that will be fumigated. You must not remove warning signs until fumigation and ventilation have been completed and the premises are safe for reentry.
Warning signs must be printed in red on a white background. They must contain, in English and Spanish, the following statement in letters that are no less than two inches in height: “DANGER—FUMIGATION.” The signs must also have a skull and crossbones that is no less than one inch in height. And in letters that are no less than one-half inch in height the signs must state all of the following:
Warning Sign for Fumigation of Enclosed Spaces
Before you start any fumigation, you must post plainly visible warning signs like this at all entrances to the space that will be fumigated.
[Name of Pesticide]
[Date and Time Fumigant was Injected]