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Hazard warning  signs

Instruct, advise, forewarn staff and visitors of potential dangers arising around the workplace. A hazard sign means there is a risk of danger, warning or caution All hazard signs comply to The Safety Signs and Signals Regulations 1996 act

SCHEDULE 1

Regulations 2(1), 3(1) and (2)

THE CLASSIFICATION OF AND HAZARD WARNING SIGNS FOR DANGEROUS SUBSTANCES

PART I

 Table of characteristic properties, classifications and hazard warning signs 

 

 (1)

  (2)

 (3)

Characteristic properties of the substance

 Classification

   Hazard warning sign


An explosive substance, that is to say-

   (a) a solid or liquid substance, or

   (b) a mixture of solid or liquid substances or both,

Capable by chemical reaction of producing gas at such a vast temperature and pressure it can cause damage to surroundings or which is designed to produce an effect by heat, light, sound, gas or smoke or a combination of these as a result of non-detonative self-sustaining exothermic chemical reactions; including one or more such substances contained in an article. (See Note 1).



Class 1:
Division 1.1, 1.2 or 1.3


(The Division number "1.2" and Compatibility Group letter "E" shown are only examples).
       

 

 



Division 1.4


(The Compatibility Group letter "G" shown is only an example)


      


For explosives of hazard classification code 1.4S, "1.4S" commonly will be at the top half of the label or may be shown on its own.
The orange label may be dispensed with for fireworks of Division 1,4 provided the word "FIREWORK" followed by the hazard classification code is shown.

 



Division 1.5


(The Compatibility Group letter "D" shown is only an example).

  
    

Explosive substances defined as above which have a predominant hazard appropriate to another Class but which nevertheless present a significant hazard from explosion.



According to the predominant hazard


(The hazard warning sign shown above should appear on packages in addition to the hazard warning sign of the main classification).

       


A substance which-

(a) has a critical temperature below 50°C or which at 50°C has a vapour pressure of more than 3 bar absolute; and

(b) is conveyed at a pressure of more than 500 millibar above atmospheric pressure or in liquefied form;

other than a toxic gas or a flammable gas.



Class 2
(Non-flammable compressed gas)

 

       

A substance which has a critical temperature below 50°C or which at 50°C has a vapour pressure of more than 3 bar absolute and which is toxic.



Class 2
(Toxic gas)


       

A substance which has a critical temperature below 50°C or which at 50°C has a vapour pressure of more than 3 bar absolute and is flammable. (see Note 2).



Class 2
(Flammable gas)


 


A liquid with a flash point of 55°C or below except a liquid which-

(a) has a flash point equal to or more than 21°C and less than or equal to 55°C and

(b) when tested at 55°C in the manner described in Schedule 2 to the Highly Flammable Liquids and Liquefied Petroleum Gases Regulations 1972 does not support combustion.



Class 3
(Flammable liquid)


       


A solid which is readily combustible under conditions encountered in a harbour or harbour area or which may cause or contribute to fire through friction.



Class 4.1
(Flammable solid)

 

A substance which is liable to spontaneous heating under conditions encountered in a harbour or harbour area or to heating in contact with air being then liable to catch fire



Class 4.2
(Spontaneously combustible substance)


       

 

 

 

A substance which in contact with water is liable to become spontaneously combustible or to give off a flammable gas.

 


Class 4.3
(Substance which in contact with water emits flammable gas)


       

A substance other than an organic peroxide, which, although not itself necessarily combustible, may by yielding oxygen or by a similar process cause or contribute to the combustion of other material.



Class 5.1
(Oxidizing substance)


       


A substance which is-

(a) an organic peroxide; and

(b) an unstable substance which may undergo exothermic self-accelerating decomposition.



Class 5.2
(Organic Peroxide)


       

 

 

 

 

 

A substance known to be so toxic to man as to afford a hazard to health under conditions encountered in a harbour or harbour area or which, in the absence of adequate data on human toxicity, is presumed to be toxic to man.

 

 

 


Class 6.1
(Toxic substance)


       

A substance known to be toxic to man or, in the absence of adequate data on human toxicity, is presumed to be toxic to man but which is unlikely to afford a serious acute hazard to health under conditions encountered in a harbour or harbour area.



Class 6.1
(Harmful substance)


       

A substance which contains disease-producing micro-organisms.



Class 6.2
(Infectious substance)


       

 

 

 

 

 

A substance of specific activity of more than 70 Becquerels per gram (0.002 microcuries per gram) (See Note 6).

 

 

 

Class 7
(Radioactive substance)


       



       



       


A substance which by chemical action will-

(a) cause severe damage when in contact with living tissue, or

(b) materially damage other freight or equipment if leakage occurs.



Class 8
(Corrosive substance)


       

Two or more dangerous substances having different classifications.


Multi-load


       

(Applicable only to hazard warning panels)





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