Haz Mat Incident Considerations u Chapter 24 Fixed

Haz Mat Incident Considerations u Chapter 24 – Fixed Facility Incident Consideration HMT 1 C 24 -1

Fixed Facility Incident Consideration u Session Objectives – Identify the impact of fire and safety features on the behavior of the products during an incident – Explain the significance of fire and safety features in the risk assessment process – Identify methods for determining the pressure and amount of lading in facility containers HMT 1 C 24 -2

Codes, Ordinances and Regulations u The Uniform Fire Code u Uniform Building Code u NFPA 704 - Hazard identification system HMT 1 C 24 -3

Codes, Ordinances and Regulations u Health and Safety Code u Locally adopted ordinances u SARA, Title III – Emergency planning, community right to know and emergency notification HMT 1 C 24 -4

Pre-Plan – Type(s) and amount(s) of materials – The hazards of each material – Potential health and environmental effects – In-house protection systems, utilities, and facility layout – Response routes, points of entry, barriers, emergency escape routes, and other access information HMT 1 C 24 -5

Pre-Plan u Identify potential exposure problems u Identify potential avenues of spread u Determine local capabilities and resources HMT 1 C 24 -6

The Pre-Planning Process u Identify target hazards u Compile information on target hazards HMT 1 C 24 -7

Sources of information include: u Building permits u Inspection reports u Hazardous materials permits u Past incident reports u Hazardous Materials Management Plan HMT 1 C 24 -8

Hazardous Materials Management Plans (HMMPs) u Developed and maintained by personnel at the fixed facility u Must be given to the agency having emergency response authority u Required HMT 1 C 24 -9

HMMP Must Contain: – General Information – Facility Storage Map – Hazardous Materials Inventory Statement – Separation of materials – Monitoring Program – Record Keeping Forms – Emergency Equipment – Emergency Response Plans HMT 1 C 24 -10

Pre-Plans u. A pre-plan usually consists of two parts: – Quick access information – Plot plan u Pre-plans should be set up in a standard format for all fixed facilities – exercise the plan HMT 1 C 24 -11

Fixed Facility Systems u Containers and tanks u Piping, valves and fittings u Signage u Security u Ignition sources u Shelf storage u Spill control, drainage and containment u Ventilation HMT 1 C 24 -12

Fixed Facility Systems u Separation from incompatible hazardous materials u Hazardous materials storage cabinets u Fire extinguishing systems u Explosion venting or suppression u Standby power u Limit controls u Manual alarm HMT 1 C 24 -13

Fixed Facility Systems u Supervision u Emergency vehicle access u Toxic gas storage u Gas detection u Local gas shut off u Automatic shut off u Enunciator panel HMT 1 C 24 -14

Fixed Facility Containers HMT 1 C 24 -15

Fixed Facility Containers u Non-bulk containers u Intermediate bulk containers u Fixed storage tanks – Underground tanks – Above ground tanks HMT 1 C 24 -16

Hazardous Materials Storage Tank Regulations u Uniform Building Code (UBC) u Uniform Fire Code (UFC) u Occupational Safety and Health Administration (OSHA) u Locally adopted Hazardous Materials Storage Ordinances (HMSO) HMT 1 C 24 -17

Vertical Atmospheric Fixed Roof Tanks HMT 1 C 24 -18

Vertical Atmospheric Fixed Roof Tanks u Wider then they are tall u Fat roof or an inverted cone shaped roof u May be designed with weak roof-toshell attachments u Usually contain flammable, combustible and corrosive liquids HMT 1 C 24 -19

Floating-Roof Tanks u Very large tanks u Roofs float on liquid inside – limits the vapor space u Designed for flammable and combustible liquids that readily vaporize HMT 1 C 24 -20

Covered Floating-Roof Tanks u Fixed roof with a inner floating roof u Can be identified by large vent openings around the top of the tank u Designed to contain flammable and combustible liquids HMT 1 C 24 -21

Vertical Low Pressure Fixed. Roof Tanks u Taller than they are wide u Dome top – designed to accommodates changes in vapor pressure u Operate at pressures up to 15 psig u Used for flammable and combustible liquids and other types of haz mats HMT 1 C 24 -22

Horizontal Above Ground Low Pressure Storage Tanks u Above ground tanks that lay horizontally u Potential problems include: – possible failure of supports during a fire – possible inadequate venting u Generally contain gasoline, naphtha or fuel oil HMT 1 C 24 -23

Pressure Horizontal Tank u Cylindrical with rounded ends u Usually mounted horizontally on concrete foundation walls or legs u Generally painted white or another highly reflective color u Contain liquefied gases u May have built-in protection systems HMT 1 C 24 -24

Spherical Tanks u Ball-like shape u Contain high pressure gases u Painted white or other reflective color u Pressure relief valve at the top – No pressure relief valve may indicate cryogenic liquids HMT 1 C 24 -25

Cryogenic Liquid Tanks u Taller than they are wide, and have domed tops u Rest on legs rather than directly on the ground u Store cryogenic liquids HMT 1 C 24 -26

Underground Storage Tanks u Underground storage tanks are at least partially below ground u Advantages - protected from fire and mechanical damage u Disadvantage - cannot be visually inspected for leaks u Subject to corrosion u Contain LPG, gasoline or fuel oil HMT 1 C 24 -27

Bulk Storage Facilities u Safety features that can be found at Bulk Storage Facilities: – Tank Spacing – Drainage Control and Diking – Venting Systems – Monitoring and Detection Systems – Fire Protection Systems – Transfer Options HMT 1 C 24 -28

Fixed Facility Haz Mat Incident Management u Review pre-plans while en route u Determine the best approach route and notify other responding units u Establish Command u Conduct safe size-up u Contact site personnel for information HMT 1 C 24 -29

Fixed Facility Haz Mat Incident Management u Determine if a rescue is involved u Isolate the area u Request assistance as needed u Establish control zones u Have responsible party respond u Identify hazards present at the site HMT 1 C 24 -30

Fixed Facility Haz Mat Incident Management u Alert hospitals if necessary u Consider protective actions u Establish the level of PPE u Contain the material using appropriate measures u Decontaminate personnel, victims and equipment u Owner is responsible for clean up HMT 1 C 24 -31

Incidents With Fire Involvement: u Extinguish vs. let it burn u Steam may volatize and spread contaminants u Use foam, dry chemical or carbon dioxide as appropriate u Oxidizers are difficult extinguish HMT 1 C 24 -32