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Unit 2.4 Containers and Damage Assessment. Objectives. Key characteristics of containers Identify various types of highway, rail, fixed and portable containers Identify potential emergency control devices Recognize the importance of proper container damage assessment. Unit 2.4  2.

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unit 2 4 containers and damage assessment
Unit 2.4

Containers and Damage Assessment

objectives
Objectives
  • Key characteristics of containers
  • Identify various types of highway, rail, fixed and portable containers
  • Identify potential emergency control devices
  • Recognize the importance of proper container damage assessment

Unit 2.4  2

key characteristics
Key Characteristics
  • Shape
  • Pressure
    • Non-pressurized (0  5 psi)
    • Low pressure (5  100 psi)
    • High pressure (100  3,000 psi)
    • Ultra-high pressure (over 3,000 psi)
  • Capacity

Unit 2.4  3

container use
Container Use
  • Fixed storage
  • Transportation
    • Highway
    • Rail
    • Intermodal
    • Pipeline
  • Portable

Unit 2.4  4

construction and standards
Construction and Standards
  • Construction materials
    • Non-ferrous
    • Ferrous
    • Alloys
    • Aluminum
    • HSLA
    • Stainless steel
  • Standards
    • Rail specification
    • Highway spec plate
    • DOT
    • Motor carrier (MC)

Unit 2.4  5

pressurized storage
Pressurized Storage

Unit 2.4  8

specialty fixed containers
Specialty Fixed Containers
  • Telescoping
  • Cryogenic
  • Other unique containers exist
  • Planning is essential

Unit 2.4  9

highway containers
Highway Containers

Unit 2.4  10

non pressurized dot 406
Non-Pressurized (DOT 406)
  • Common use: Petroleum products, some poisons
  • Construction: Mostly made of aluminum

Unit 2.4  11

low pressure dot 407
Low Pressure (DOT 407)
  • Use: General purpose chemical tanker
  • Construction: Aluminum, SS or steel
    • Might be insulated

Unit 2.4  12

corrosive carrier dot 412
Corrosive Carrier (Dot 412)
  • Use: Heavy corrosive liquids
  • Construction: Black iron, SS or alloys
    • May be specially lined

Unit 2.4  13

pressurized mc 330 mc 331
Pressurized (MC 330 & MC 331)
  • Use: Liquefied compressed gases
  • Construction: Steel, HSLA

Unit 2.4  14

cryogenic carrier mc 338
Cryogenic Carrier (MC 338)
  • Use: Ultra cold cryogenic liquids
  • Construction: Specialized with annular space and unique venting characteristics

Unit 2.4  15

dry bulk carrier non specification
Dry-Bulk Carrier (Non specification)
  • Use: Hazardous and non-hazardous powdered and granular materials
  • Pneumatically off-loaded

Unit 2.4  17

intermodal containers
Intermodal Containers

Unit 2.4  18

video containers
Video  Containers

Unit 2.4  19

rail containers
Rail Containers

Unit 2.4  20

general rail containers
General Rail Containers
  • Box cars
  • Flat cars
  • Gondola cars
  • Hopper cars
  • Tank cars

Unit 2.4  21

rail tank cars
Rail Tank Cars
  • Classifications
    • Non-pressurized (less than 100 psi)
    • Pressurized (greater than 100 psi)
  • Capacities up to 31,500 gallons
  • Some are dedicated service (approx. 40)
  • Intermodal
    • TOFC and COFC

Unit 2.4  22

non pressurized
Non-Pressurized
  • Use: Liquids with low vapor pressures
  • Construction: No expansion dome

Unit 2.4  23

non pressurized with expansion dome
Non-Pressurized (with expansion dome)
  • Use: Liquids with higher volatility
  • Construction: Expansion dome for vapors

Unit 2.4  24

pressurized liquefied gas service
Pressurized (Liquefied gas service)
  • Use: Liquefied gas carrier
  • Construction: Protective dome, no underside piping

Unit 2.4  25

shipping papers and placards
Shipping Papers and Placards
  • Highway shipping papers
  • Rail shipping papers
  • Marine (Dangerous cargo manifest)
  • Air (Air bill)

Unit 2.4  26

non bulk containers
Non-Bulk Containers
  • Capacities
    • Less than 119 gallons
    • Less than 1000 lbs. water capacity
  • Types
    • Cylinders, bags, carboys
    • Drums, boxes, totes

Unit 2.4  27

pipelines
Pipelines
  • May be single or multi product lines
    • Use of “pigs”
    • Specific gravity
  • Pipeline markers
  • Safety features

Unit 2.4  28

radiological packaging
Radiological Packaging
  • Special form
  • Normal
  • Low specific activity
  • Type “A” packaging
  • Type “B” packaging

Unit 2.4  29

summary
Summary
  • Numerous types of containers
  • General classifications
  • Container used is largely dependent upon vapor pressure of the product
  • Shipping papers are essential
  • Radioactive packaging considerations

Unit 2.4  30

objectives32
Objectives
  • Identify three types of stressors
  • Understand the need for damage assessment
  • Define BLEVE and its potential impact

Unit 2.4  32

types of container stressors
Types of Container Stressors
  • Thermal
  • Chemical
  • Mechanical

Unit 2.4  33

failures and releases
Failures and Releases
  • Failures
    • Disintegration
    • Run-away cracking
    • Openings in closures
    • Punctures
    • Splits and tears
  • Release Types
    • Detonation
    • Violent rupture
    • Rapid relief
    • Spill or leak

Unit 2.4  34

container damage assessment35
Container Damage Assessment
  • Very risky operation
  • Goal is to identify “critical containers”
    • Ones in which catastrophic failure is possible
  • Items to consider
    • Pressure
    • Container construction
    • Type of stressor

Unit 2.4  35

critical pressurized containers
Critical Pressurized Containers
  • Mechanical failures
    • Pressurized tanks (e.g. MC 330 and 331) do tolerate dents well
  • Thermal impacts
    • BLEVE

Unit 2.4  36

activity 2 4 container recognition
Activity 2.4

Container

Recognition

Unit 2.4  37