HAZCHEM & NFPA Diamond

THE SAFETY BUDDY
23 Nov 201717:29

Summary

TLDRThis training session covers hazards related to chemical and petroleum product handling, focusing on the Hazchem and NFPA fire diamond systems. It explains emergency action codes (EAC) used to guide emergency responders, methods for fire suppression, and decoding EAC characters. The session also details the NFPA diamond color codes, indicating health, flammability, and reactivity hazards. Examples and calculations for multi-load vehicles are included, as well as personal protective equipment guidelines. The training emphasizes understanding hazard identification for effective emergency response and safety measures.

Takeaways

  • 🚒 Hazchem plates are used on vehicles transporting hazardous substances and provide essential emergency information.
  • 🧯 The Emergency Action Code (EAC) on the Hazchem plate provides guidance to first responders on how to manage fire risks and chemical spills.
  • 🌊 Numbers in the EAC indicate the fire suppression method, such as water jets, foam, or dry agents like carbon dioxide.
  • ⚠️ Letters in the EAC categorize the chemical hazards and personal protective equipment (PPE) required during an incident.
  • 💧 'Contain' or 'Dilute' in the EAC instructs whether the chemical spill should be washed down or contained.
  • 🛑 An 'E' in the EAC indicates that evacuation may be necessary due to public hazard risks.
  • 🔥 The NFPA diamond system helps emergency personnel quickly identify risks associated with hazardous materials based on color-coded sections.
  • 🔴 The red section of the NFPA diamond represents flammability, ranging from non-flammable to highly flammable chemicals.
  • 🔵 The blue section of the NFPA diamond signifies health hazards, from no risk to severe health risks.
  • 💥 The yellow section indicates reactivity, from stable materials to those capable of explosive decomposition.

Q & A

  • What is the purpose of the HAZCHEM warning plate system?

    -The HAZCHEM warning plate system is used for vehicles transporting hazardous substances and at storage facilities. It provides emergency responders with key information, such as the emergency action code, UN substance identification number, and a warning symbol indicating the danger posed by the chemical.

  • What information is provided in the top left section of the HAZCHEM plate?

    -The top left section of the HAZCHEM plate displays the Emergency Action Code (EAC), which provides guidance to emergency services on the actions to take in case of an incident involving the hazardous substance.

  • How is the first character of the Emergency Action Code (EAC) determined, and what does it represent?

    -The first character of the EAC is a number ranging from 1 to 4, indicating the type of fire suppressant that should be used. For example, 1 means water jets, 2 means fog or fine spray, 3 means foam, and 4 means a dry agent like carbon dioxide.

  • What does the letter in the Emergency Action Code signify?

    -The letter in the Emergency Action Code indicates the category of the chemical, including whether it is violent or reactive. It also informs the responders about the required personal protective equipment and the actions needed for safe handling and disposal.

  • What does the letter 'B' in the Emergency Action Code indicate about the chemical?

    -The letter 'B' indicates that the chemical can be violently or explosively reactive with the atmosphere or water, requiring careful handling.

  • How are multi-load emergency action codes calculated for vehicles carrying multiple hazardous substances?

    -To calculate the multi-load EAC, the most hazardous characters from each substance's code are selected. The highest number is chosen for the first character, the most severe protection level for the second, and the most hazardous control measures for the third.

  • What does the NFPA Diamond system represent?

    -The NFPA Diamond system is used to identify the hazards of materials for emergency response. It categorizes chemicals based on flammability, health hazard, reactivity, and special hazards, each represented by a different color and number.

  • What do the different colors in the NFPA Diamond represent?

    -The red section represents flammability, the blue section represents health hazards, the yellow section represents reactivity, and the white section contains codes for special hazards.

  • What does a '4' in the red section of the NFPA Diamond indicate?

    -A '4' in the red section of the NFPA Diamond indicates that the substance is extremely flammable, vaporizing quickly at normal temperatures, and burns readily, such as acetylene or propane.

  • What kind of health hazard does a '3' in the blue section of the NFPA Diamond indicate?

    -A '3' in the blue section indicates that short exposure to the substance could cause serious temporary or moderate residual injury, requiring significant precautions during handling.

Outlines

00:00

🔥 Overview of Hazards and Safety Codes in Handling Chemical and Petroleum Products

This paragraph introduces the session on handling chemical and petroleum product hazards, specifically focusing on the HAZCHEM and NFPA fire diamonds. The discussion will cover HAZCHEM, emergency action codes (EAC), fire suppression methods, safety parameters, and examples of multi-load vehicles. It explains that HAZCHEM is a warning system for hazardous substances in transport and storage, detailing various elements like the EAC, UN identification number, and emergency contact information. The role of the emergency services is also outlined, with a brief explanation of non-hazardous plates.

05:01

🚨 Understanding Emergency Action Codes (EAC)

This paragraph explains the emergency action code (EAC) system, which is crucial for first responders in dealing with incidents involving dangerous goods. EACs are composed of a number and letters, where the number (1-4) indicates the appropriate fire suppression method (e.g., water jets, foam, dry agents), and the letter represents specific hazards and personal protective equipment (PPE) requirements. It details the role of EAC in advising emergency personnel on fire suppression, hazardous reactions with water, and PPE categories. Additionally, the paragraph describes Australia's adoption of certain standards and the implications of these codes for emergency response and hazardous materials.

10:04

🧯 PPE and Chemical Spillage Control in Emergency Situations

This section discusses the types of personal protective equipment (PPE) required in different hazardous situations, distinguishing between categories like full-body suits and breathing apparatus (BA). It explains when and how to use PPE based on emergency action codes. The paragraph also covers protocols for dealing with chemical spills, such as dilution or containment, and situations where evacuation might be necessary. Symbols like 'E' indicate when evacuation is mandatory. Examples of various EAC codes are provided to illustrate how the system works in real-life situations, including advice on using different fire suppression methods and handling spillages.

15:05

🧪 HAZCHEM Code Calculations for Multi-loads

This paragraph walks through how to calculate the HAZCHEM code for multi-load vehicles carrying multiple hazardous substances. By analyzing the first character (indicating fire suppression methods) and the second character (indicating hazard level and protection methods), the highest severity is chosen to form a composite code for the entire load. A detailed example is provided, illustrating the calculation of a multi-load HAZCHEM code when multiple emergency action codes like 3Y, 2S, and 4WE are involved. The paragraph emphasizes the importance of selecting the highest hazard and protection level to ensure proper safety measures.

⚠️ Introduction to the NFPA Diamond and its Importance

This section introduces the NFPA 704 standard, which uses the 'fire diamond' to help emergency personnel quickly assess risks posed by hazardous materials. The NFPA diamond uses color codes to represent different hazard categories: red for flammability, blue for health hazards, yellow for chemical reactivity, and white for special warnings. These divisions allow emergency responders to identify risks and decide on the necessary precautions or procedures. The importance of understanding and using these color codes to prevent accidents during emergency responses is highlighted.

🔥 NFPA Diamond: Flammability Ratings (Red Section)

Here, the flammability ratings within the NFPA diamond's red section are detailed. Materials are rated from 0 to 4, with 0 representing materials that do not burn (like concrete) and 4 representing highly flammable substances (like acetylene). The flammability scale covers a range of substances, from those that require intense preheating to ignite, to those that ignite readily under normal temperatures. Each level on the scale is explained with examples of substances that correspond to the different ratings, including gasoline, diesel fuel, and mineral oil.

🩺 NFPA Diamond: Health Hazards (Blue Section)

This paragraph explains the health hazard ratings in the NFPA diamond, which are indicated by the blue section. Chemicals are rated from 0 (no health hazard) to 4 (extremely dangerous). Examples are provided for each level, such as potassium chloride (rated 1, causing minor irritation) and hydrogen cyanide (rated 4, potentially deadly after brief exposure). The paragraph explains how these ratings help in determining the precautions needed to protect workers and the public from chemical exposure.

💥 NFPA Diamond: Chemical Reactivity (Yellow Section)

This part of the NFPA diamond focuses on chemical reactivity, as indicated by the yellow section. The reactivity is rated from 0 (stable under normal conditions) to 4 (capable of detonation or explosive decomposition at normal temperatures). Examples of chemicals for each reactivity level include nitrogen (0), potassium (2), ammonium nitrate (3), and nitroglycerin (4). The importance of understanding these ratings is stressed, as it informs the necessary precautions to handle reactive substances safely.

❗ Special Hazard Symbols (White Section)

The final section explains the special hazard symbols displayed in the white area of the NFPA diamond. Standard symbols include 'OX' for oxidizers, 'W' for water-reactive substances, and 'SA' for simple asphyxiant gases. Non-standard symbols like 'COR' for corrosive and 'BIO' for biological hazards are also discussed. The use of these symbols, though not always part of the official NFPA standard, helps emergency responders identify specific risks that require special handling procedures.

📊 Examples of NFPA Diamond Usage in Material Safety Data Sheets (MSDS)

This paragraph provides examples of how NFPA diamonds are displayed on material safety data sheets (MSDS) for various chemicals like superior kerosene oil and diesel fuel. It compares the NFPA diamond with the Hazardous Materials Identification System (HMIS), clarifying that while both systems look similar, they serve different purposes. The importance of using NFPA diamonds for labeling hazardous materials and guiding emergency responses is highlighted. The MSDS examples show how the system is applied in real-world settings.

Mindmap

Keywords

💡HAZCHEM

HAZCHEM is a warning plate system used for vehicles transporting hazardous substances and storage facilities. It provides emergency responders with crucial information, such as the appropriate actions to take during an incident involving dangerous goods. In the video, the HAZCHEM system is described as vital for ensuring safety when dealing with chemical spills or accidents.

💡Emergency Action Code (EAC)

The Emergency Action Code (EAC) is a three-character code used on HAZCHEM plates to inform emergency services of the actions needed in case of an accident involving hazardous substances. It includes information on fire suppression methods and personal protective equipment. The video details how the EAC helps emergency personnel manage incidents involving chemical hazards.

💡NFPA Fire Diamond

The NFPA Fire Diamond is a system developed by the National Fire Protection Association to identify the hazards of materials for emergency response. It uses a color-coded diamond with sections representing health hazards, flammability, reactivity, and special hazards. The video explains how this system helps emergency responders quickly assess the risks associated with chemicals.

💡Personal Protective Equipment (PPE)

Personal Protective Equipment (PPE) refers to specialized clothing and equipment worn by emergency personnel to protect themselves from hazardous substances. In the video, PPE is discussed in the context of the EAC, where different types of PPE are required based on the level of hazard posed by the chemical. Examples include breathing apparatus and chemical-proof suits.

💡Fire Suppression

Fire suppression involves methods and equipment used to extinguish fires caused by hazardous chemicals. The video explains how the EAC provides guidance on which suppression methods (such as water jets, foam, or dry agents) should be used depending on the substance. Chemicals react differently to various suppression methods, so using the right one is critical.

💡Reactivity

Reactivity refers to a chemical’s tendency to undergo a chemical reaction, often in a hazardous manner. In the NFPA Fire Diamond, the yellow section indicates the chemical’s reactivity. The video describes how substances rated as highly reactive may explode or violently react with water, which determines the type of emergency response needed.

💡Flammability

Flammability is the ability of a chemical to ignite and burn. In the NFPA Fire Diamond, the red section represents flammability, with higher numbers indicating more flammable substances. The video provides examples of flammable materials like gasoline and acetone, which can ignite under various temperature conditions, requiring specific fire suppression methods.

💡Health Hazard

Health hazard refers to the potential of a chemical to cause harm to human health. In the NFPA Fire Diamond, the blue section indicates the level of health risk. The video explains how chemicals with higher health hazard ratings can cause serious injuries or death upon exposure, and why this information is critical for first responders.

💡Oxidizer

An oxidizer is a substance that can cause other materials to burn without the presence of air. In the NFPA Fire Diamond, oxidizers are marked in the special hazards section (white) with the symbol 'OXY'. The video highlights that oxidizers require specific handling and emergency measures due to their ability to intensify fires.

💡Multi-load Hazard Code

A multi-load hazard code is used when multiple hazardous substances are being transported together. The video explains how the highest hazard ratings from each substance are combined to create a single, comprehensive code. This ensures that emergency responders can take appropriate precautions for the entire load, not just individual substances.

Highlights

Introduction to hazards associated with handling chemical and petroleum products.

Discussion on HAZCHEM and the NFPA fire diamond system.

Explanation of the Emergency Action Code (EAC) and its role in emergency response.

How the first character in the EAC determines the fire suppression method.

Explanation of each category of chemicals and associated personal protective equipment (PPE).

How the use of breathing apparatus and PPE is critical during chemical emergencies.

Methods to decode the Emergency Action Code and interpret it during an incident.

Special focus on how EAC indicates if evacuation is necessary or if chemicals need to be contained.

Example provided on decoding multi-load EAC codes for vehicles transporting multiple hazardous substances.

Detailed explanation of the NFPA fire diamond system and its color codes.

Description of flammability ratings in the NFPA fire diamond, with examples of chemicals at different levels.

Explanation of health hazard ratings in the NFPA fire diamond, including the types of injuries from exposure.

Chemical reactivity ratings and examples of substances based on their stability.

Importance of understanding the white section of the NFPA diamond, including special hazards like oxidizers and asphyxiants.

Comparison of NFPA fire diamond with HMIS (Hazardous Materials Identification System) and their differences.

Transcripts

play00:00

welcome to the second session of

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training for hazards associated with

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handling of chemical and petroleum

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products today's topic will be husking &

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NFPA of fire diamond the contents of

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today's discussion will be one what is

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has scheme - what is emergency action

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code three

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decoding the emergency action code for

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the method of suppression of fire and

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the husking safety parameters then we

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will look for some examples and

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calculations for multi load vehicles

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after has scheme we will move to NFPA

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diamond we will discuss various color

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codes and what they mean also we will

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discuss in amateur

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what is a scam and what information is

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given in house complete how scam is a

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warning plate system used for vehicles

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transporting hazardous substances and on

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storage facilities a sample house

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complete as you can see on the screen

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contains the following details the top

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left section of the plate gives the

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emergency action code or EAC telling the

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emergency services like the fire brigade

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about what actions they have to take if

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there's an accident the middle left

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section gives the UN substance

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identification number describing the

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chemical the lower left section gives

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the telephone number that should be

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called if any specialist advice is

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needed the warning symbol at top right

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indicates what danger the chemical

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presents the bottom right of the plate

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may or may not carry a company logo

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there is also a standard null has

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complete to indicate the Transperth of

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non hazardous substances the null plate

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does not include any AC or substance

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identification number

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emergency action code the emergency

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action code or EAC is a three character

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code which is displayed on all dangerous

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goods classed carries and provides a

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quick assessment to first responders and

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emergency responders like the

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firefighters and police about what

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actions they should take if the carrier

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carrying such Goods gets involved in an

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incident such as traffic collision ei

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seas are characterized by a single

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number ranging from one to four and

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either one or two letters which

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completely depend on the hazard

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dangerous goods emergency action code

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list is reviewed in every two years it

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is an essential compliance document for

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all emergency services the local

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government and for those who may control

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the planning and prevention of

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emergencies involving dangerous goods

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let's see what does the characters in

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the emergency action code show first

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character in the code is always a number

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ranging from 1 to 4 this number is

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indicative of what type of fire

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suppressant should be used to suppress a

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fire from igniting or extinguish a fire

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caused by the chemical wherever number 1

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is given it shows that the chemical

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needs waterjets as fire extinguishing

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medium number 2 similarly means for gas

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extinguishing medium however in the

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absence of fog equipment a fine spray

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may be used the number 3 which we

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generally see everywhere around us holds

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use of form as extinguishing medium

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number 4 means chemical requires dry

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agent like carbon dioxide or hell and

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substitutes the system is designed to

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rank fire suppression methods in order

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of usability for example a chemical

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marked with the number 2 or 4 can be

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suppressed with methods 3 foam or for

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dry agent but not with 1 that is water

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jets the try agent method must be used

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for chemicals that have an undesirable

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reaction with water and must not be

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allowed to come in contact with water

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therefore 4 is the highest-ranking

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separation method because all the other

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methods use water water must not be

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allowed to come into contact with the

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substance at risk

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eg AC contains at least one letter which

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determines which category the chemical

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falls under and which also highlights

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the violence of the chemical that is

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likely to spontaneously combust

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X

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for personal protective equipment to use

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while working around the chemical and

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what action to take when disposing of

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the chemical each category is assigned a

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letter to determine what actions are

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required when handling containing and

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disposing of the chemical in question

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there are eight major categories which

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are commonly denoted by a black letter

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on a white background for subcategories

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exist which specifically deal with what

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type of personal protective equipment

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responders must wear when handing the

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emergency denoted by a white letter on a

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black background in Australia with the

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update of the Australian dangerous goods

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cord volume seven in 2010 the white

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letter on a black background has been

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removed

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making VA as a requirement at all large

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incidents regardless of whether the

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substances involved in a fire or not if

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a category is classed as violent it is

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denoted by letter B this means that the

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chemical can be violently or explosively

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reactive either with the atmosphere or

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water or both which could be marked by

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dangerous when wet symbol protection is

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divided up into three categories of

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personal protective equipment for

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breathing apparatus and breathing

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apparatus for fire only film denotes

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that full personal protective equipment

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provisions must be used around and in

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contact with the chemical which will

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usually include a portable breathing

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apparatus and watertight and chemical

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proof suit PA acronym for breathing

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apparatus specifies that a portable

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breathing apparatus must be used at all

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times in and around the chemical and ba

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for fire only specifies that a breathing

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apparatus is not necessary for short

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exposure periods to the chemical but is

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required if the chemical is on a light

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PA for fire only is denoted with in the

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emergency action code as a white letter

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on a black background while a black

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heater on a white background denotes

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breathing apparatus at all times when

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changing the background color is not

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possible such as with handwriting the

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use of brackets means the same as a

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black background three ye when written

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with y in brackets means the same as a

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white letter on a black background

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substance control specifies what to do

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with the chemical in the event of a

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spill either dilute or contain dilute

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means that the chemical may be washed

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down the drain with large quantities of

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water

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in requires that the spillage must

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not come in contact with drains or water

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courses in the event of a chemical

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incident the emergency action code may

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specify that an evacuation may be

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necessary as the chemical poses a public

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hazard which may extend beyond the

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immediate vicinity

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if evacuation is not possible advice to

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stay indoors and secure all points of

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ventilation may be necessary

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this condition is denoted by an e at the

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end of any emergency action code it is

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an optional letter depending on the

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nature of the chemical let's try to

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understand by examples for EAC 3y e

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looking at the table we deduce that we

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have to use for more dry agent substance

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reacts violently or is explosive VA use

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is essential for Y without black

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background evacuate vicinity and contain

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spill again for 3y e containing Y with

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black background we need to use for more

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dry agent substance reacts violently or

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is explosive use be a fire present

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evacuate vicinity and contain spill for

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code to R we deduce use of fog form or

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dry agent the substance is not violent

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useful PP and dilute spill now let's see

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for X it says use dry agent only the

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substance is not violent for PPE are

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essential and contain the spill can you

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now deduce code one s e well let's say

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you Stetz

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fog form or dry agent breathing

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apparatus is required for Phi only

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evacuation is also needed and dilute the

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runaway chemical let's see calculation

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of how scheme action code for multi

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loads or sites with multiple husking

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codes example there are three substances

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to be carried as a multi load having

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emergency action codes of three Y 2 s

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and 4 w e the first character of the EAC

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for each of the three substances is 3/2

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and for the highest number must be taken

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as the first character of the code for

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the multi load and therefore the first

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character will be for the second

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character for the EAC for each of the

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three substances is y S&W let's see the

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characters in the table substance

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control has top character

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the most severe case of impact it means

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in dilution check chemicals people have

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more hazard than our s and T also our

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will be more dangerous than SOT so the

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protection method also reduces as we

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move from P to t unlike dilution type

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chemicals W will have more hazard than X

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Y or Z same as the protection method

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reduces in dilution group same will be

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followed here also we can say P and W

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holds same level of hazard the only

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difference will be that W cannot be

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washed away while P can be same as with

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our antics s and Y and T and Z all these

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needs same protection level as it is

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evident in the table so when we have to

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compare s and y we will prefer Y as it

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needs to be contained though it has same

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hazard as s and needs same protection

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standards but when we have to choose

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between our and Y we will have to choose

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R because it needs better protection

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level applying these principles we will

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choose Y from the given two that is 3 y

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+ 2 s this resultant character Y is then

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taken and copied with W which is the

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most hazardous material and needs

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full-body protection so our third

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character will be W the third substance

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has E as a third character and therefore

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the multi load must also have an e the

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resultant husking code for the three

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substances carried as a multi load will

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therefore be 4w e

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what is the NFPA Diamond NFPA 704

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standard system for the identification

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of the hazards of materials for

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emergency response is a standard

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maintained by the National Fire

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Protection Association it was first

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adopted as a guide in 1960 and revised

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several times since then it defines fire

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diamonds used by emergency personnel to

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quickly and easily identify the risks

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posed by hazardous materials this helps

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to determine what special equipment

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should be used what procedures have to

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be followed or precautions to be taken

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during the initial stages of an

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emergency response what are the color

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codes saying in NFPA diamond the four

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divisions are typically color-coded with

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red indicating flammability blue

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indicating level of health hazard yellow

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for chemical reactivity and white

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containing codes for special hazards

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each of health flammability and

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reactivity is rated on a scale from zero

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new hazard to fourth severe risk the

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numeric values in the first column are

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designated in the standard by degree of

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hazard using the Arabic numerals 0 1 2 3

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& 4

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let's see the first square of the nfpa

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diamond it shows flammability and is

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indicated by red number zero on red

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square means materials that will not

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burn under typical fire conditions

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including intrinsically non combustible

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materials such as concrete stone and

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sand these materials will not burn in

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air when exposed to a temperature of 820

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degree centigrade for a period of 5

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minutes the number one means materials

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will require considerable preheating

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under all ambient temperature conditions

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before ignition or combustion can occur

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it includes some finely divided

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suspended solids that do not require

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heating before ignition

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these have flashpoint above 93 degree

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centigrade like mineral oil and ammonia

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the number two means chemical must be

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moderately heated or exposed to

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relatively high ambient temperature

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before ignition can occur like diesel

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fuel paper and sulfur also multiple

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finely divided suspended solids that do

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not require heating before ignition

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Kanaka these have flashpoint between 37

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and 93 degree centigrate number 3 means

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liquids and solids including finely

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divided suspended solids can be ignited

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under almost all ambient temperature

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conditions such as gasoline and acetone

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these are liquids having a flashpoint

play12:09

below 23 degree centigrate and having a

play12:12

boiling point at or above 37 degree

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centigrade or having a flashpoint

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between 23 and 38 degree centigrate

play12:19

number 4 means substance or chemical

play12:21

will rapidly or completely vaporize at

play12:24

normal atmospheric pressure and

play12:25

temperature or is readily dispersed in

play12:27

air and will burn readily such as

play12:29

acetylene propane hydrogen gas includes

play12:33

pyrophoric substances flashpoint of

play12:36

these are below room temperature or

play12:37

twinning

play12:38

now let's see the blue diamond which

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indicates level of health hazards a

play12:43

chemical having zero in blue diamond

play12:45

poses no health hazard no precautions

play12:47

are necessary and would often no house

play12:49

it above and beyond that of ordinary

play12:51

combustible materials like wood and

play12:53

paper the chemicals with number one

play12:56

means exposure to these chemicals would

play12:58

cause irritation with only minor

play12:59

residual injury like acetone sodium

play13:02

bromide and potassium chloride

play13:05

chemicals with number two on intense or

play13:07

continued but not chronic exposure could

play13:09

cause temporary incapacitation or

play13:11

possible residual injury some examples

play13:13

of these are diethyl ether ammonium

play13:15

phosphate and iodine chemicals with

play13:18

number three short exposure to these

play13:20

could cause serious temporary or

play13:22

moderate residual injury like liquid

play13:24

hydrogen carbon monoxide calcium

play13:26

hypochlorite and hexafluoride is a casa

play13:29

de the deadly form means very short

play13:32

exposure to these chemicals could cause

play13:34

death or major residual injury like

play13:36

hydrogen cyanide phosphine methyl

play13:38

isocyanate and hydrofluoric acid I hope

play13:41

you can identify poisonous chemicals

play13:44

having foreign Blue Diamond on their

play13:45

label next time moving to next cube the

play13:48

instability or reactivity indicator

play13:50

shown by yellow color code zero rating

play13:53

means these are normally stable even

play13:55

under fire exposure conditions and are

play13:57

not reactive with water like helium and

play14:00

nitrogen rating one is given to those

play14:03

chemicals which are normally stable but

play14:05

can become unstable at elevated

play14:07

temperatures and pressures such as

play14:08

propane rating to means chemical

play14:11

undergoes violent chemical change at

play14:13

elevated temperatures and pressures and

play14:15

reacts violently with water or it may

play14:17

form explosive mixtures with water such

play14:20

as white phosphorus potassium and sodium

play14:22

free rating is given to substances which

play14:25

are capable of detonation or explosive

play14:27

decomposition but requires a strong

play14:29

initiating source they must be heated

play14:31

under confinement before initiation they

play14:34

reacts explosively with water or will

play14:36

detonate if severely shocked examples of

play14:38

these are ammonium nitrate cesium and

play14:41

hydrogen peroxide then unstoppable form

play14:44

means the marked substance or chemical

play14:46

is readily capable of detonation or

play14:48

explosive decomposition at normal

play14:50

temperatures and pressures examples of

play14:52

these capable bombs are nitroglycerin

play14:54

chlorine dioxide nitrogen triiodide and

play14:57

chlorine trifluoride special notice is

play15:00

given in 4th section or cubes shown by

play15:02

white color the white special notice

play15:05

area can contain several symbols the

play15:07

following symbols are defined by the

play15:09

NFPA 704 standard Oh X means oxidizer

play15:14

it allows chemicals to burn without an

play15:16

air supply such as potassium perchlorate

play15:19

ammonium nitrate and hydrogen peroxide

play15:21

cross w means it reacts with water in an

play15:24

unusual or dangerous manner like cesium

play15:27

sodium and sulfuric acid sa means simple

play15:31

asphyxiant gas like hydrogen nitrogen

play15:33

helium neon argon Krypton and xenon

play15:37

non-standard symbols are also used in

play15:39

white cube these hazard codes are not

play15:42

part of the NFPA 704 standard but are

play15:45

occasionally used in an unofficial

play15:46

manner the use of non-standard codes may

play15:49

be permitted required or disallowed by

play15:52

the authority having jurisdiction like

play15:54

fire department

play15:55

cor means corrosive or strong acid or

play15:58

base such as sulfuric acid and potassium

play16:00

hydroxide acid o L K means acid or

play16:04

alkaline to be more specific

play16:06

pío or shown symbol means biological

play16:09

hazard such as flu virus or rabies virus

play16:12

pio i means poisonous like strychnine or

play16:15

alpha amanitin r or IE d means

play16:19

radioactive such as plutonium and cobalt

play16:22

60 c ry and c ry o means cryogenic such

play16:26

as liquid nitrogen let's see some

play16:30

examples of NFPA diamond they can be

play16:33

found on any material safety data sheet

play16:35

or on the bottling or packing levels of

play16:37

chemicals on user guides etc it can be

play16:41

shown as a diamond of the degree of

play16:42

hazard can be written in tabular form as

play16:44

shown this is a view of material safety

play16:47

data sheet of superior kerosene oil OS

play16:50

ko MSDS for anthraquinone is also shown

play16:53

here can you decide which of the two

play16:56

will be more flammable shown here is

play16:58

MSDS for diesel fuel the table shown on

play17:02

right side is known as HMIS or hazardous

play17:04

materials identification system code and

play17:06

it is completely different from NFPA

play17:08

diamond though it may look similar

play17:11

HMIS is not used as widely as NFPA

play17:14

system now this is the NFPA diamond from

play17:17

the gasoline or petrol is MSDS

play17:23

that's all for today thank you

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Hazard SafetyFire SuppressionEmergency CodesChemical HandlingNFPA StandardsFire SafetyPetroleum ProductsRisk ManagementSafety TrainingEmergency Response
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