| CHAPTER 4 - Learning Unit 6 |
| Hazardous Materials Table (HMT) |
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Lesson Goal:
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Lesson Objectives: Upon completion of this lesson the student will be able to:
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Recommended Time:
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Materials Required:
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Standard:
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Lesson Conventions
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INFORMATION:
When a reference is made to a section of the California Vehicle Code (CVC) it will be highlighted in green: (CVC When a reference is made to a section of Title 49 of the Code of Federal Regulations (CFR) it will be highlighted in blue: (49CFR
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Hazardous Materials Table (HMT) Column 9 Quantity Limitations |

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ACTION: In your Student Guide you should be open to Chapter 4 Hazardous Materials Table (HMT). We will begin on page 4-17, paragraph III "The Hazardous Materials Table" subparagraph J "Column 9 Quantity Limitations". |
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DISCUSSION 1: The materials listed in the HMT are designated as Hazardous Materials (HazMat) for the purpose of transportation by the U.S. Department of Transportation (DOT). (Remember the definition as discussed in Chapter 3 Definitions and Hazard Classes?) Every time you prepare a shipment of HazMat for transportation you must begin by going to the HMT. The table is found in 49 CFR |
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ACTION: Now open your copy of 49 CFR to the HMT. Any page in the table will do for now. We just want to look over the organization of the table at this time. I'll wait while you get your book and locate the HMT. |
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Column 9 is divided into 2 sub-columns, 9a and 9b. |
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DISCUSSION 2a: Column 9a is Passenger Aircraft/Rail. Column 9a lists the maximum amount allowed in a single package (no limit of the number of such packages that may be transported) when the package(s) are transported on an aircraft carrying passengers or on a train carrying passengers. Please note that all amounts are in metric, either "L" for liters or "kg" for kilograms. Do not confuse these with pounds and such. Now, just for fun, do Practice 2a in the box on the right. |
PRACTICE 2a: I have a 20 pound package of "Trichloroacetic acid" that I want to ship by air. Is this package allowed to be transported by passenger carrying aircraft? |
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DISCUSSION 2b: Column 9b is Cargo Aircraft Only. This column applies only to cargo aircraft. We are not concerned with cargo only rail because in that mode they can carry all the hazardous materials they want as long as they meet all the other requirments of CFR 49. Column 9b lists the maximum amount allowed in a single package (no limit of the number of such packages that may be transported) when the package(s) are transported on a cargo only aircraft. I don't think you need practice on this one. At least not yet. |
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There are a couple of more entries that might be found in either column 9a and/or 9b. "Forbidden" means that the material may not be transported by Passenger Aircraft/Rail, if in 9a, or by Cargo Aircraft if in 9b. Sometimes you will find Forbidden in both columns. For practice why don't you do Practice 3 in the box on the right. |
PRACTICE 3: Look up "Hafnium powder, dry" and tell me if we can ship this by aircraft. |
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The entry "No Limit" might be found in either column 9a and/or 9b. "No Limit" means that any amount of that material may be transported by Passenger Aircraft/Rail, if in 9a, or by Cargo Aircraft if in 9b. Sometimes you will find "No Limit" in both columns. Do Practice 4a and b to see what I mean. |
PRACTICE 4a: Look up "Regulated Medical Waste" and tell me how much I can ship by either Passenger Carrying Aircraft and how much I can ship by Cargo Aircraft. PRACTICE 4b: You want to ship your "Batteries, containing sodium" by aircraft. Can you do that? |
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Okay, now that you are done with the practice lets go on to Discussion 5. |
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All limitations listed are "Net" (the contents only) unless the entry specifically says "Gross" (contents plus packaging). To find out do Practice 5 in the box to the right. |
PRACTICE 5: In your table look up "Batteries, dry, containing potassium hydroxide solid". Are the Quantity Limitations in column 9a and 9b "Net" or "Gross" |
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That's enough on "Net" and "Gross" so let's go on to Discussion 6 for a look at a couple more items. |
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If an article or device is listed, the "Quantity Limitation" applies to the entire article or device but not the packing material or packaging. To find out do Practice 6a in the box to the right. |
PRACTICE 6a: In your table look up "Lighters". Go to column 9a and 9b and tell me what what the "Quantity Limitations" are for Passenger Carrying Aircraft and Cargo Aircraft. |
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DISCUSSION 6b: If your outer package contains more than one hazardous material the total "Net" may not exceed the lowest permitted maximum "Quantity Limitation". If one materials is a liquid and one a solid, the maximum net quantity must be calculated in kg. |
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DISCUSSION 6c: If the material you are shipping is forbidden on Passenger Carrying Aircraft/Rail or exceeds the "Quantity Limitation" for Passenger Carrying Aircraft/Rail but is within the "Quantity Limitations" for Cargo Aircraft and is offered for transportation on Cargo Aircraft, the package must be labelled "CARGO AIRCRAFT ONLY".
Hopefully, this all makes sense. If you are not shipping by air or passenger rail that column 9 has nothing to offer you. But if you need it, now you know how to use it. |
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Coming up, Column 10 Vessel Stowage. The last column on in the HMT. |
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Hazardous Materials Table (HMT) Column 10 Vessel Stowage |

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ACTION: In your Student Guide you should be open to Chapter 4 Hazardous Materials Table (HMT). We will begin on page 4-17, paragraph III "The Hazardous Materials Table" subparagraph K "Column 10 Vessel Stowage". |
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DISCUSSION 1: The materials listed in the HMT are designated as Hazardous Materials (HazMat) for the purpose of transportation by the U.S. Department of Transportation (DOT). (Remember the definition as discussed in Chapter 3 Definitions and Hazard Classes?) Every time you prepare a shipment of HazMat for transportation you must begin by going to the HMT. The table is found in 49 CFR |
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ACTION: Now open your copy of 49 CFR to the HMT. Any page in the table will do for now. We just want to look over the organization of the table at this time. I'll wait while you get your book and locate the HMT. |
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This column is only applicable if your materials will be shipped by vessel (boat, ship, etc). Column 10 is also divided into two sub-columns, 10a and 10b. |
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DISCUSSION 7a: Column 10a specifies the authorized stowage locations on board cargo and passenger vessels. To find out what the letters in this column mean you go to 49 CFR Do Practice 7a in the box to the right to see how this works. |
PRACTICE 7a: In your table look up "Perchloric acid, with not more than 50% acid by mass" in column 2. Then go to column 10a and see what code is in that column. What does that code mean? |
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DISCUSSION 7b: Column 10b lists codes for stowage requirements for specific Hazardous Materials. To find out what the letters in this column mean you go to 49 CFR Do Practice 7a in the box to the right to see how this works. |
PRACTICE 7b: Look up "Perchloric acid, with not more than 50% acid by mass" in column 2 again. Then go to column 10b and see what code is in that column. What does that code mean? |
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With vessel transportation we must look at the information from both columns, 10a and 10b. |
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Congratulations, you have completed almost all of the HMT. Only a couple of small items and you can go take a well deserved nap. |
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DISCUSSION 8: Right now you are probably asking yourself where I found all the cool stuff we discussed in this chapter. Well you simply go to 49 CFR |
NO PRACTICE: |
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DISCUSSION 9: Right behind the HMT is Appendix A List of Hazardous Substances and Reportable Quantities. We discussed this in Chapter 3 Definitions and Hazard Classes. This Appendix has two tables. Table 1 is Hazardous Substances Other Than Radionuclides. Table 2 is Radionuclides. Concentrate on Table 1. We will come back to Table 2 later in the course. For now please read the information at the beginning of Appendix A. It will explain, in detail, what we discussed in Chapter 3. |
NO PRACTICE: |
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DISCUSSION 10: Right behind Appendix A List of Hazardous Substances and Reportable Quantities is Appendix B List of Marine Pollutants. We also covered this in Chapter 3. But it would serve you well to read the information at the beginning of this appendix if you have not already done so. |
NO PRACTICE: |
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Now you have completed Chapter 4 and you can go take a well deserved nap. Right after you do the homework. See the next box. |
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Look in the back of your student guide for 4-B-1 and 4-C-1. You will find two charts with some Hazardous Materials listed. Look up each one and place your response in each box in the columns to the right of the name of the material. Instructions for each exercise are included on the first page of each. |
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Now go on to Chapter 5 in which we will discuss "Shipping Papers". |
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| RESULT 2a:
Find "Trichloroacetic acid" in column 2 of the HMT and go across to the right to column 9a and you will see that this material is limited to 15 kg in a single package on a passenger aircraft. So our 20 pound package would not be authorized, right? Nope, 15 kg is 33 pounds (just in case you forgot that the chart is listed in metric) and our package is only 20 pounds. So the package is OK to send on passenger aircraft. This practice is just to be sure you watch the pounds vs kilograms and other metric stuff. |
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| RESULT 3:
No we may not. It says "Forbidden" in both column 9a for passenger carrying aircraft and 9b for cargo only aircraft. |
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| RESULT 4a:
When you locate "Regulated Medical Waste" you should find "No Limit" in both column 9a and 9b. So I can ship all the "Regulated Medical Waste" I want by Passenger or Cargo aircraft. |
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| RESULT 4b:
When you locate "Batteries, containing sodium" in column 2 you should find "Forbidden" in column 9a and "No Limit" in column 9b. That means that you can't ship the batteries by Passenger Carrying Aircraft but can ship all you want on Cargo Aircraft. Now go back to the discussion and continue on. |
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| RESULT 5:
Both column 9a and 9b say "Gross" so "Gross" it must be. |
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| RESULT 6:
For Passenger Carrying Aircraft it is 1kg in a single container. The 1kg only includes the lighter and not the container. But it does include the entire lighter not just the fluid/gas in it. The same rule applies to the 100kg allowed on Cargo Only Aircraft. Now go back to the discussion and we will consider some more stuff. |
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| RESULT 7a:
"Perchloric acid, with not more than 50% acid by mass" has a "C" in column 10a. Go to 49 CFR |
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| RESULT 7b:
"Perchloric acid, with not more than 50% acid by mass" has the number "66" in column 10b. Go to 49 CFR That was easy, huh? |
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