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... contamination from nearby soil, vegetable debris, cooling towers, or sanitary...

... oxygen-consuming equipment such as salamanders, torches, furnaces, etc., in a confined space, is sufficient air provided to assure combustion without reducing the oxygen concentration of the atmosphere below 19.5% by volume? [ ] Whenever combustion-type equipment is used in a confined space, are provisions made to ensure the exhaust gases are vented outside of the enclosure? [ ] Is each confined space checked for decaying vegetation or animal matter which may produce methane? [ ] Is the confined space checked for possible industrial waste which could contain toxic properties? [ ] If the confined space is below the ground and near areas where motor vehicles will be operating, is it possible for vehicle exhaust or carbon monoxide to enter the space? ENVIRONMENTAL CONTROLS [ ] Are all work areas properly illuminated? [ ] Are employees ... , approved for such locations? [ ] Are motorized hand and hand/rider trucks so designed that the brakes are applied, and power to the drive motor shuts off when the operator releases his or her grip on the device that controls the travel? [ ] Are industrial trucks with internal combustion engine, operated in buildings or enclosed areas, carefully checked to ensure such operations do not cause harmful concentration of dangerous gases or fumes? SPRAYING OPERATIONS [ ] Is adequate ventilation assured before spray operations are started? [ ] Is mechanical ventilation provided when spraying operations is done in enclosed areas? [ ] When mechanical ventilation is provided during spraying operations, is it so arranged that it will not circulate the contaminated air? [ ] Is the spray area free of hot surfaces? [ ] Is the ...