TB 86 STRUCTURAL FUMIGATION

Question 1

TB 86 STRUCTURAL FUMIGATION

In the past, hydrogen cyanide was the most widely used fumigant.

As hydrogen cyanide was phased out, methyl bromide replaced it as the fumigant of choice in applications previously calling for hydrogen cyanide.

methyl bromide was later phased out and is not replaced with sulfuryl fluoride

Answer 1

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Question 2

TB 86 STRUCTURAL FUMIGATION

As methyl bromide was phased out, it was replaced by __________ which is currently used in over 95% of all fumigations throughout the United States.

Answer 2

sulfuryl fluoride

Question 3

TB 86 STRUCTURAL FUMIGATION

__________ is currently the only chemical approved in Los Angeles County for structural fumigations and can only be used by licensed commercial users. It is a nonflammable, colorless and odorless chemical that is stored and transported in pressure vessels in a liquid form.

Answer 3

Sulfuryl fluoride

Question 4

TB 86 STRUCTURAL FUMIGATION

Although sulfuryl fluoride is only about 1/3 to 1/2 as effective as methyl bromide, it is a safer fumigant because of this decreased toxicity and the fact that it is non-combustible, insoluble in water and relatively stable.

Answer 4

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Question 5

TB 86 STRUCTURAL FUMIGATION

skin contact with liquid sulfuryl fluoride could cause frostbite because the temperature of the fumigant will be approximately _____ Fahrenheit (boiling point) as it changes from a liquid to a gas.

Answer 5

-67°

Question 6

TB 86 STRUCTURAL FUMIGATION

Currently, there are three manufacturers producing sulfuryl fluoride which is marketed under four different brand names:

• Vikane (structural fumigant) is manufactured by the Dow Chemical :Company
• MasterFume is manufactured by the Drexel Chemical Company.
• Profume (agricultural fumigant) is manufactured by the Dow Chemical Company.
• Zythor is manufactured by Ensystex

Answer 6

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Question 7

TB 86 STRUCTURAL FUMIGATION

Because sulfuryl fluoride is odorless, it will always be used with the warning agent chloropicrin.

Answer 7

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Question 8

TB 86 STRUCTURAL FUMIGATION

Chloropicrin

When used with sulfuryl fluoride, small chloropicrin soaked rags are placed in the structure on protective plates similar to pie tins prior to the introduction of the sulfuryl fluoride. Chloropicrin is a non-flammable, colorless liquid at normal temperatures and pressures. Chloropicrin becomes unstable at temperatures above 140°F.

Vapors are 5.7 times heavier than air and are non-skin absorptive as a gas.

Answer 8

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Question 9

TB 86 STRUCTURAL FUMIGATION

Aluminum phosphide is another commonly used fumigant. It is used where other pesticide applications and/or standard tent/tarp fumigation techniques are impractical; such as ships, trains, aircraft, grain silos and golf courses with gopher problems. They cannot be used inside structures nor closer than 100 feet from a structure where humans and/or domestic animals reside.

The gas is colorless with a garlic-like odor,

Do not use water on incidents involving spilled tablets

Answer 9

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Question 10

TB 86 STRUCTURAL FUMIGATION

methyl bromide

methyl bromide is most likely to be encountered in the strawberry industry.

It’s heavier than air with a vapor density of 3.27.

The flammable range is from 10% to 16% in air,

Answer 10

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Question 11

TB 86 STRUCTURAL FUMIGATION

The typical fumigation under CAP is generally a three-day operation:

Answer 11

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Question 12

TB 86 STRUCTURAL FUMIGATION

Aeration with tarpaulins in place for a minimum of 12 hours

Answer 12

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Question 13

TB 86 STRUCTURAL FUMIGATION

levels are less than one part per million within six hours of clearing and have no detectable levels of sulfuryl fluoride within ___ hours after the start of aeration.

Answer 13

24

Question 14

TB 86 STRUCTURAL FUMIGATION

SCBA and full PPE

Additionally, all personnel performing rescue or rapid extraction operations shall wear the following:

Answer 14

Nitrile EMS gloves with either firefighting gloves or the green nitrile over-gloves from the HazMat bag as the outer glove.

Question 15

TB 86 STRUCTURAL FUMIGATION

Decontamination of patients is not needed for exposure to sulfuryl fluoride or Methyl Bromide in the gaseous state. However, due to a lack of accurate information, hospitals may require removal of clothing and a wash down before they will accept patients.

Answer 15

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Question 16

TB 86 STRUCTURAL FUMIGATION

Full turnouts, SCBA with facepiece, donned and on air when working in, on, or within ___ feet of the structure being fumigated.

Answer 16

30

Question 17

TB 86 STRUCTURAL FUMIGATION

Evacuate all structures within ___ feet or downwind of the fumigation prior to tent removal.

Ensure a minimum one-inch line is deployed for Emergency Decon.

Answer 17

30

Question 18

TB 86 STRUCTURAL FUMIGATION

The typical fumigation under CAP is generally a three-day operation:

Day 1 – Install tarps, including inlets and ducts, release fumigant Multiple warning signs with the following information 
o Type of fumigant used
o When it was applied
o Name of the fumigation company
o 24-hour emergency contact number

Day 2 – Aeration with tarpaulins in place for a minimum of ____ hours

Day 3 – Remove tarps, test and certify for re-entry, potential restoration of natural gas service.

Answer 18

12

Question 19

TB 86 STRUCTURAL FUMIGATION

When in the gaseous state, sulfuryl fluoride and chloropicrin are NOT skin absorptive.

Answer 19

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