Transcript Planning & Intelligence
Florida Operations Level Hazardous Materials Training
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
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Key Characteristics
Shape Pressure Non-pressurized (0 Low pressure (5 5 psi) 100 psi) High pressure (100 3,000 psi) Ultra-high pressure (over 3,000 psi) Capacity
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Container Use
Fixed storage Transportation Highway Rail Intermodal Pipeline Portable
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Construction and Standards
Construction materials Non-ferrous Ferrous Alloys Aluminum HSLA Stainless steel
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Standards Rail specification Highway spec plate DOT Motor carrier (MC) Unit 2.4 5
Fixed Facility Containers
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Non- and Low Pressure Storage
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Pressurized Storage
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Specialty Fixed Containers
Telescoping Cryogenic Other unique containers exist Planning is essential
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Highway Containers
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Non-Pressurized
(DOT 406)
Common use: Petroleum products, some poisons Construction: Mostly made of aluminum
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Low Pressure
(DOT 407)
Use: General purpose chemical tanker Construction: Aluminum, SS or steel Might be insulated
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Corrosive Carrier
(Dot 412)
Use: Heavy corrosive liquids Construction: Black iron, SS or alloys May be specially lined
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Pressurized
(MC 330 & MC 331)
Use: Liquefied compressed gases Construction: Steel, HSLA
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Cryogenic Carrier
(MC 338)
Use: Ultra cold cryogenic liquids Construction: Specialized with annular space and unique venting characteristics
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High Pressure Tube Trailers
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Dry-Bulk Carrier
(Non specification)
Use: Hazardous and non-hazardous powdered and granular materials Pneumatically off-loaded
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Intermodal Containers
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Video
Containers
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Rail Containers
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General Rail Containers
Box cars Flat cars Gondola cars Hopper cars Tank cars
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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
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Non-Pressurized
Use: Liquids with low vapor pressures Construction: No expansion dome
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Non-Pressurized
(with expansion dome)
Use: Liquids with higher volatility Construction: Expansion dome for vapors
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Pressurized
(Liquefied gas service)
Use: Liquefied gas carrier Construction: Protective dome, no underside piping
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Shipping Papers and Placards
Highway shipping papers Rail shipping papers Marine (Dangerous cargo manifest) Air (Air bill)
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Non-Bulk Containers
Capacities Less than 119 gallons Less than 1000 lbs. water capacity Types Cylinders, bags, carboys Drums, boxes, totes
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Pipelines
May be single or multi product lines Use of “pigs” Specific gravity Pipeline markers Safety features
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Radiological Packaging
Special form Normal Low specific activity Type “A” packaging Type “B” packaging
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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
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Florida Operations Level Hazardous Materials Training
Container Damage Assessment
Objectives
Identify three types of stressors Understand the need for damage assessment Define BLEVE and its potential impact
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Types of Container Stressors
Thermal Chemical Mechanical
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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
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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
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Critical Pressurized Containers
Mechanical failures Pressurized tanks (e.g. MC 330 and 331) do tolerate dents well Thermal impacts BLEVE
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Florida Operations Level Hazardous Materials Training
Activity 2.4
Container Recognition
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