First isolate in all directions: 100 ft (30 m). Then protect persons downwind during the day: 0.2 mi (0.2 km). Then protect persons downwind during the night: 0.8 mi (1.2 km).
What is an initial isolation distance?
The ERG2008 defines the “Initial Isolation Distance” as: “a distance within which all persons should be considered for evacuation in all directions from the actual spill/leak source.
What is chlorine in the ERG?
Chlorine is a chemical element with the symbol Cl and atomic number 17. The second-lightest of the halogens, it appears between fluorine and bromine in the periodic table and its properties are mostly intermediate between them. Chlorine is a yellow-green gas at room temperature.
What is the ERG Guide number for chlorine?
UN#GuideName of Material1016119Carbon monoxide, compressed1017124Chlorine1018126Chlorodifluoromethane1018126Refrigerant gas R-22What is the initial isolation distance for a large spill from a tank truck placard 1017?
1017), Table 1 suggest: An initial isolation distance of 500 metres for a large spill and, ▪ A protective action distance of 3 km for a large spill during the day.
What are the shapes of the Initial Isolation and Protective Action Zones?
Shapes of the recommended initial isolation and protective action zones? A circle for the initial isolation zone with an elongation of it downwind side for the protective action zone. which is correct regarding emergency decontamination?
What is the shape of the initial isolation zone?
The shape of the area in which protective actions should be taken (the Protective Action Zone) is shown in this figure. The spill is located at the center of the small circle. The larger circle represents the INITIAL ISOLATION zone around the spill.
What is the ERG guide for acetone UN 1090?
UN#GuideName of Material1090127Acetone1091127Acetone oils1092131 PAcrolein, stabilized1093131 PAcrylonitrile, stabilizedWhere in the ERG would you find Initial Isolation and Protective Action Distances?
The green section contains the table of initial isolation and protective action distances. These distances are useful for protecting people from vapors resulting from spills considered poisonous or toxic if inhaled.
What packing group is chlorine?Column 1 Shipping Name and DescriptionColumn 2 Primary ClassColumn 4 Packing GroupAmmonia solutions, relative density less than 0.880 at 15°C (59°F) in water, with more than 50% ammonia2.3—Boron trichloride2.3—Boron trifluoride, compressed2.3—Chlorine2.3—
Article first time published onHow painful is death by chlorine gas?
At 5–15 ppm, there is moderate mucous membrane irritation. At 30 ppm and beyond, there is immediate chest pain, shortness of breath, and cough. At approximately 40–60 ppm, a toxic pneumonitis and/or acute pulmonary edema can develop.
How do you extinguish a chlorine fire?
- Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical, or carbon dioxide. …
- Advice for firefighters: Wear self-contained breathing apparatus for firefighting if necessary. …
- Use water spray to cool unopened containers. …
- Use water spray to keep fire exposed containers cool.
What precaution should be used when using chlorine bleach?
Use fans or open windows and doors. Wear respirators when recommended. Wear goggles or a face shield to protect your eyes and face from splashes. Wear gloves such as household rubber or neoprene gloves (or other types as recommended by the manufacturer).
What is the evacuation distance for a large spill?
Large Spill Consider initial downwind evacuation for at least 800 meters (1/2 mile).
What is the formula for a chlorine molecule?
Formula and structure: the chemical structure of chlorine gas is Cl2 and its molecular weight is 70 g/mol.
How far should you isolate the spill in all directions?
Isolate spill or leak area for at least 100 meters (330 feet) in all directions.
What are dot classes explosive under?
Class 1 dangerous goods are explosive substances and articles.
When using the ERG to locate appropriate initial action what provides the most specific initial action guide?
ERG Initial Action Guides are provided in the: orange-bordered pages.
What class is UN 1993?
UN NumberClassProper Shipping NameUN 19913Chloroprene, inhibitedUN 19923Flammable liquids, toxic, n.o.s.UN 19933Flammable liquids, n.o.s.UN 19946.1Iron pentacarbonyl
What is protective action distance?
AND PROTECTIVE ACTION DISTANCES The Table of Initial Isolation and Protective Action Distances suggests distances useful to protect. people from vapors resulting from spills involving dangerous goods which are considered toxic. by inhalation (TIH), including certain chemical warfare agents, or which produce toxic gases.
In which colored section of the ERG would you look for isolation distances for a spill of chlorine?
GREEN: Some chemicals are also included in the green pages. The green pages indicate the Table of Initial Isolation and Protective Action Distances. This section of the ERG describes the distances necessary for initial isolation around a chemical incident as well as the distance downwind that persons must be protected.
What is the first priority on any hazardous materials incident?
Your first and immediate priority is to protect yourself and others. Establish an Isolation Zone and move outside it. Alert others in the danger area to do the same. Take only actions that you are equipped and trained to take.
When using the Table of Initial Isolation and Protective Action Distances A small spill is considered one involving?
Generally, a SMALL SPILL is one which involves a single, small package (e.g., a drum containing up to approximately 200 liters), a small cylinder, or a small leak from a large package. A LARGE SPILL is one which involves a spill from a large package, or multiple spills from many small packages.
Where in the ERG can you find evacuation distances for small spills and fires?
Green Section The fifth section, with green page borders, suggests initial evacuation or shelter in place distances (protective action distances) for spills of materials that are Toxic-by-Inhalation (TIH).
When using the ERG you will see that isolation distances change depending on the time of day?
The distances change from daytime to nighttime due to different mixing and dispersion conditions in the air. During the night, the air is generally calmer and this causes the material to disperse less and therefore create a toxic zone which is greater than would usually occur during the day.
What does the number 1090 tell you about the material?
1090 Placard – Class 3 Flammable Liquid.
What is the guide number for phosgene?
CAS NumberUN/NA NumberUSCG CHRIS Code75-44-51076PHGNIOSH Pocket GuideInternational Chem Safety CardPhosgenePHOSGENE
What is the proper order of the DOT shipping description for acetone?
From this listing we learn that the DOT has classified Acetone as hazardous. Its Proper Shipping Name is Acetone (identified in Column 2). Column 3 lists “3” as its primary Hazard Class. This means Acetone is a flammable liquid.
What is the DOT Hazard Class for chlorine?
4-Digit DOT Placards: Hazard Class 2 – 1017 (Chlorine)
What is the signal word for chlorine?
Signal Word : Danger Pictogram(s) : Hazard Statements : H330: Fatal if inhaled. H314: Causes severe skin burns and eye damage. H370: Causes damage to respiratory system.
What color is the element chlorine?
Chlorine is yellowy-green in colour, as is the image. A yellowy-green dense gas with a choking smell. Chlorine kills bacteria – it is a disinfectant. It is used to treat drinking water and swimming pool water.
