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Control of Industrial Major Accident Hazards Regulations 1996

Key Information

Regulations to make further provisions to control major accident hazards related to industrial activities involving hazardous substances, to protect persons and the environment, and to require manufacturers to identify, assess, prevent, and mitigate major accidents.


Source: DOSH - P.U. (A) 39

PART I - PRELIMINARY

Regulation 1. Citation and commencement

Regulation 2. Application

Regulation 3. Interpretation

Regulation 4. Limitation of power of officer

Regulation 5. Obligations of manufacturer and employee


PART II - IDENTIFICATION AND NOTIFICATION OF AN INDUSTRIAL ACTIVITY

Regulation 6. Application

Regulation 7. Identification and notification

Regulation 8. Notification of change


PART III - DEMONSTRATION OF SAFE OPERATION FOR NON-MAJOR HAZARD INSTALLATION

Regulation 9. Application

Regulation 10. Demonstration of safe operation

Regulation 11. Review of demonstration of safe operation


PART IV - REPORT ON INDUSTRIAL ACTIVITY AND PREPARATION OF EMERGENCY PLAN FOR MAJOR HAZARD INSTALLATION

Regulation 12. Application

Regulation 13. Registration of Competent Person

Regulation 14. Report on industrial activity

Regulation 15. Modification

Regulation 16. Updating of report

Regulation 17. Review of report

Regulation 18. On-site emergency plan

Regulation 19. Updating of on-site emergency plan

Regulation 20. Review of on-site emergency plan

Regulation 21. Off-site emergency plan

Regulation 22. Information to the public


PART V - NOTIFICATION OF MAJOR ACCIDENT

Regulation 23. Notification of major accident


PART VI - PENALTY

Regulation 24. Penalty


SCHEDULES

SCHEDULE 1 (Regulation 2) - INDICATIVE CRITERIA

1. Very Toxic Substances

LD₅₀ (oral) (mg/kg body weight)LD₅₀ (cutaneous) (mg/kg body weight)LC₅₀ (mg/l) (inhalation)
1.LD₅₀ < 5LD₅₀ < 10LC₅₀ < 0.1
2.5 < LD₅₀ < 2510 < LD₅₀ < 500.1 < LC₅₀ < 0.5

2. Other Toxic Substances

LD₅₀ (oral) (mg/kg body weight)LD₅₀ (cutaneous) (mg/kg body weight)LC₅₀ (mg/l) (inhalation)
1.25 < LD₅₀ < 20050 < LD₅₀ < 4000.5 < LC₅₀ < 2
info

For the purpose of this Schedule-

LD50 (oral) means a dose of a substance in mg/kg of body weight that produces death in 50% of a given experimental animal population;

LD50 (cutaneous) means a dose of a substance in mg/kg of body weight that produces death in 50% of a given experimental animal population; and

LC50 means a concentration of a substance in air that is estimated to produce death after inhalation for four hours in 50% of a given experimental animal population.

SCHEDULE 2 (Regulation 2) – LIST OF SUBSTANCES AND QUANTITIES

The quantities set out below relate to each installation or group of installations belonging to the same manufacturer where the distance between the installations is not sufficient to avoid, in foreseeable circumstances, any aggravation of major accident hazards. The quantities apply in any case to each group of installations belonging to the same manufacturer where the distance between the installations is less than 500 metres.

Part 1: Named Substances

Where a substance or group of substances listed in Part 1 also falls within a category of Part 2 the quantities set out in Part 1 shall be used.

Group 1 – Toxic Substances (quantity < 1 tonne)

SubstanceThreshold Quantity
Aldicarb
100 kilograms
4-Aminodiphenyl
1 kilogram
Amiton
1 kilogram
Anabasine
100 kilograms
Arsenic pentoxide, arsenic (V) acid and salts
500 kilograms
Arsenic trioxide, arsenious (III) acid and salts
100 kilograms
Arsine (Arsenic hydride)
10 kilograms
Azinphos-ethyl
100 kilograms
Azinphos-methyl
100 kilograms
Benzidine
1 kilogram
Benzidine salts
1 kilogram
Beryllium (powders, compounds)
10 kilograms
Bis (2-chloroethyl) sulphide
1 kilogram
Bis (chloromethyl) ether
1 kilogram
Carbofuran
100 kilograms
Carbophenothion
100 kilograms
Chlorfenvinphos
100 kilograms
4-(Chloroformyl) morpholine
1 kilogram
Chloromethyl methyl ether
1 kilogram
Cobalt (metal, oxides, carbonates and sulphides as powders)
1 tonne
Crimidine
100 kilograms
Cyanthoate
100 kilograms
Cycloheximide
100 kilograms
Demeton
100 kilograms
Dialifos
100 kilograms
00-Diethyl S-ethylsulphinylmethyl phosphorothioate
100 kilograms
00-Diethyl S-ethylsuphonylmethyl phosphorothioate
100 kilograms
00-Diethyl S-ethylthiomethyl phosphorothioate
100 kilograms
00-Diethyl S-isopropylthiomethyl phosphorothioate
100 kilograms
00-Diethyl S-propylthiomethyl phosphorodithioate
100 kilograms
Dimefox
100 kilograms
Dimethylcarbamoyl chloride
1 kilogram
Dimethylnitrosamine
1 kilogram
Dimethyl phosphoramidocyanidic acid
1 tonne
Diphacinone
100 kilograms
Disulfoton
100 kilograms
EPN
100 kilograms
Ethion
100 kilograms
Fensulfothion
100 kilograms
Fluenetil
100 kilograms
Fluoroacetic acid
1 kilogram
Fluoroacetic acid, salts
1 kilogram
Fluoroacetic acid, esters
1 kilogram
Fluoroacetic acid, amides
1 kilogram
4-Fluorobutyric acid
1 kilogram
4-Fluorobutyric acid, salts
1 kilogram
4-Fluorobutyric acid, esters
1 kilogram
4-Fluorobutyric acid, amides
1 kilogram
4-Fluorocrotonic acid
1 kilogram
4-Fluorocrotonic acid, salts
1 kilogram
4-Fluorocrotonic acid, esters
1 kilogram
4-Fluorocrotonic acid, amides
1 kilogram
4-Fluoro-2-hydroxybutyric acid
1 kilogram
4-Fluoro-2-hydroxybutyric acid, salts
1 kilogram
4-Fluoro-2-hydroxybutyric acid, esters
1 kilogram
4-Fluoro-2-hydroxybutyric acid, amides
1 kilogram
Glutaronitrile (Hydroxyacetonitrile)
100 kilograms
1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin
100 kilograms
Hexamethylphosphoramide
1 kilogram
Hydrogen selenide
10 kilograms
Isobenzan
100 kilograms
Isodrin
100 kilograms
Juglone (5-Hydroxynaphthalene-1,4-dione)
100 kilograms
4,4′-Methylenebis (2-chloroaniline)
10 kilograms
Methyl isocyanate
150 kilograms
Mevinphos
100 kilograms
2-Naphthylamine
1 kilogram
Nickel metal, oxides, carbonates and sulphides as powders
1 tonne
Nickel tetracarbonyl
10 kilograms
Oxydisulfoton
100 kilograms
Oxygen difluoride
10 kilograms
Paraoxon (Diethyl 4-nitro-phenyl phosphate)
100 kilograms
Parathion
100 kilograms
Parathion-methyl
100 kilograms
Pentaborane
100 kilograms
Phorate
100 kilograms
Phosacetim
100 kilograms
Phosgene (Carbonyl chloride)
750 kilograms
Phosphamidon
100 kilograms
Phosphine (Hydrogen phosphide)
100 kilograms
Promurit (1-(3,4-Dichlorophenyl)-3-triazenethio-carboxamide)
100 kilograms
1,3-Propanesultone
1 kilogram
1-Propen-2-chloro-1,3-diol diacetate
10 kilograms
Pyrazoxon
100 kilograms
Selenium hexafluoride
10 kilograms
Sodium selenite
100 kilograms
Stibine (Antimony hydride)
100 kilograms
Sulfotep
100 kilograms
Sulphur dichloride
1 tonne
Tellurium hexafluoride
100 kilograms
TEPP
100 kilograms
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD)
1 kilogram
Tetramethylene-disulphotetramine
1 kilogram
Thionazin
100 kilograms
Tirpate (2,4-Dimethyl-1,3-dithiolane-2-carboxadihyde O-methylcarbamoyloxime)
100 kilograms
Trichloromethanesulphenyl chloride
100 kilograms
1-Tri(cyclohexyl)stannyl-1H-1,2,4-triazole
100 kilograms
Triethylenemelamine
10 kilograms
Warfarin
100 kilograms

Group 2 - Toxic Substances (quantity > 1 tonne)

SubtanceThreshold Quantity
Aldicarb
100 kilograms
4-Aminodiphenyl
1 kilogram
Amiton
1 kilogram
Anabasine
100 kilograms
Arsenic pentoxide, arsenic (V) acid and salts
500 kilograms
Arsenic trioxide, arsenious (III) acid and salts
100 kilograms
Arsine (Arsenic hydride)
10 kilograms
Azinphos-ethyl
100 kilograms
Azinphos-methyl
100 kilograms
Benzidine
1 kilogram
Benzidine salts
1 kilogram
Beryllium (powders, compounds)
10 kilograms
Bis (2-chloroethyl) sulphide
1 kilogram
Bis (chloromethyl) ether
1 kilogram
Carbofuran
100 kilograms
Carbophenothion
100 kilograms
Chlorfenvinphos
100 kilograms
4-(Chloroformyl) morpholine
1 kilogram
Chloromethyl methyl ether
1 kilogram
Cobalt (metal, oxides, carbonates and sulphides as powders)
1 tonne
Crimidine
100 kilograms
Cyanthoate
100 kilograms
Cycloheximide
100 kilograms
Demeton
100 kilograms
Dialifos
100 kilograms
00-Diethyl S-ethylsulphinylmethyl phosphorothioate
100 kilograms
00-Diethyl S-ethylsuphonylmethyl phosphorothioate
100 kilograms
00-Diethyl S-ethylthiomethyl phosphorothioate
100 kilograms
00-Diethyl S-isopropylthiomethyl phosphorothioate
100 kilograms
00-Diethyl S-propylthiomethyl phosphorodithioate
100 kilograms
Dimefox
100 kilograms
Dimethylcarbamoyl chloride
1 kilogram
Dimethylnitrosamine
1 kilogram
Dimethyl phosphoramidocyanidic acid
1 tonne
Diphacinone
100 kilograms
Disulfoton
100 kilograms
EPN
100 kilograms
Ethion
100 kilograms
Fensulfothion
100 kilograms
Fluenetil
100 kilograms
Fluoroacetic acid
1 kilogram
Fluoroacetic acid, salts
1 kilogram
Fluoroacetic acid, esters
1 kilogram
Fluoroacetic acid, amides
1 kilogram
4-Fluorobutyric acid
1 kilogram
4-Fluorobutyric acid, salts
1 kilogram
4-Fluorobutyric acid, esters
1 kilogram
4-Fluorobutyric acid, amides
1 kilogram
4-Fluorocrotonic acid
1 kilogram
4-Fluorocrotonic acid, salts
1 kilogram
4-Fluorocrotonic acid, esters
1 kilogram
4-Fluorocrotonic acid, amides
1 kilogram
4-Fluoro-2-hydroxybutyric acid
1 kilogram
4-Fluoro-2-hydroxybutyric acid, salts
1 kilogram
4-Fluoro-2-hydroxybutyric acid, esters
1 kilogram
4-Fluoro-2-hydroxybutyric acid, amides
1 kilogram
Glutaronitrile (Hydroxyacetonitrile)
100 kilograms
1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin
100 kilograms
Hexamethylphosphoramide
1 kilogram
Hydrogen selenide
10 kilograms
Isobenzan
100 kilograms
Isodrin
100 kilograms
Juglone (5-Hydroxynaphthalene-1,4-dione)
100 kilograms
4,4′-Methylenebis (2-chloroaniline)
10 kilograms
Methyl isocyanate
150 kilograms
Mevinphos
100 kilograms
2-Naphthylamine
1 kilogram
Nickel metal, oxides, carbonates and sulphides as powders
1 tonne
Nickel tetracarbonyl
10 kilograms
Oxydisulfoton
100 kilograms
Oxygen difluoride
10 kilograms
Paraoxon (Diethyl 4-nitro-phenyl phosphate)
100 kilograms
Parathion
100 kilograms
Parathion-methyl
100 kilograms
Pentaborane
100 kilograms
Phorate
100 kilograms
Phosacetim
100 kilograms
Phosgene (Carbonyl chloride)
750 kilograms
Phosphamidon
100 kilograms
Phosphine (Hydrogen phosphide)
100 kilograms
Promurit (1-(3,4-Dichlorophenyl)-3-triazenethio-carboxamide)
100 kilograms
1,3-Propanesultone
1 kilogram
1-Propen-2-chloro-1,3-diol diacetate
10 kilograms
Pyrazoxon
100 kilograms
Selenium hexafluoride
10 kilograms
Sodium selenite
100 kilograms
Stibine (Antimony hydride)
100 kilograms
Sulfotep
100 kilograms
Sulphur dichloride
1 tonne
Tellurium hexafluoride
100 kilograms
TEPP
100 kilograms
2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD)
1 kilogram
Tetramethylene-disulphotetramine
1 kilogram
Thionazin
100 kilograms
Tirpate (2,4-Dimethyl-1,3-dithiolane-2-carboxadihyde O-methylcarbamoyloxime)
100 kilograms
Trichloromethanesulphenyl chloride
100 kilograms
1-Tri(cyclohexyl)stannyl-1H-1,2,4-triazole
100 kilograms
Triethylenemelamine
10 kilograms
Warfarin
100 kilograms
Acetone cyanohydrin (2-Cyanopropan-2-ol)
200 tonnes
Acrolein (2-Propenal)
200 tonnes
Acrylonitrile
20 tonnes
Allyl alcohol (2-Propen-1-ol)
200 tonnes
Allylamine
200 tonnes
Ammonia
100 tonnes
Bromine
10 tonnes
Carbon disulphide
200 tonnes
Chlorine
10 tonnes
Diphenyl methane di-isocyanate (MDI)
200 tonnes
Ethylene dibromide (1,2-Dibromoethane)
50 tonnes
Ethyleneimine
50 tonnes
Formaldehyde (concentration > 90%)
20 tonnes
Hydrogen chloride (liquefied gas)
250 tonnes
Hydrogen cyanide
20 tonnes
Hydrogen fluoride
50 tonnes
Hydrogen sulphide
50 tonnes
Methyl bromide (Bromomethane)
200 tonnes
Nitrogen oxides
50 tonnes
Propyleneimine
50 tonnes
Sulphur dioxide
20 tonnes
Sulphur trioxide
20 tonnes
Tetraethyl lead
50 tonnes
Tetramethyl lead
50 tonnes
Toluene di-isocyanate (TDI)
100 tonnes

Group 3 - Highly Reactive Substances

SubstanceThreshold Quantity
Acetylene (Ethyne)
50 tonnes
Ammonium nitrate (a)
500 tonnes
Ammonium nitrate (the form of fertilizer) (b)
1,000 tonnes
2,2-Bis(tert-butylperoxy) butane (concentration > 70%)
50 tonnes
1,1-Bis(tert-butylperoxy) cyclohexane (concentration > 80%)
50 tonnes
Tert-Butyl peroxyacetate (concentration > 70%)
50 tonnes
Tert-Butyl peroxyisobutyrate (concentration > 80%)
50 tonnes
Tert-Butyl peroxy isopropyl carbonate (concentration > 80%)
50 tonnes
Tert-Butyl peroxymaleate (concentration > 80%)
50 tonnes
Tert-Butyl peroxypivalate (concentration > 77%)
50 tonnes
Dibenzyl peroxydicarbonate (concentration > 90%)
50 tonnes
Di-sec-butyl peroxydicarbonate (concentration > 80%)
50 tonnes
Diethyl peroxydicarbonate (concentration > 30%)
50 tonnes
2,2-Dihydroperoxypropane (concentration > 30%)
50 tonnes
Di-isobutyryl peroxide (concentration > 50%)
50 tonnes
Di-n-propyl peroxydicarbonate (concentration > 80%)
50 tonnes
Ethylene oxide
5 tonnes
Ethyl nitrate
50 tonnes
3,3,6,6,9,9-Hexamethyl-1,2,4,5-tetroxacy-clononane (concentration > 75%)
50 tonnes
Hydrogen
10 tonnes
Methyl ethyl ketone peroxide (concentration > 60%)
5 tonnes
Methyl isobutyl ketone peroxide (concentration > 60%)
50 tonnes
Oxygen
500 tonnes
Peracetic acid (concentration > 60%)
50 tonnes
Propylene oxide
50 tonnes
Sodium chlorate
20 tonnes

Group 4 – Explosive Substances

SubstanceThreshold quantity
Barium azide
50 tonnes
Bis (2,4,6-trinitrophenyl)-amine
50 tonnes
Chlorotrinitrobenzene
50 tonnes
Cellulose nitrate (containing > 12.6% nitrogen)
50 tonnes
Cyclotetramethylene-tetranitramine
50 tonnes
Cyclotrimethylene-trinitramine
50 tonnes
Diazodinitrophenol
10 tonnes
Diethylene glycol dinitrate
10 tonnes
Dinitrophenol, salts
50 tonnes
Ethylene glycol dinitrate
10 tonnes
1-Guanyl-4-nitrosaminoguany-1-tetrazene
10 tonnes
2,2',4,4',6,6'-Hexanitrostilbene
50 tonnes
Hydrazine nitrate
50 tonnes
Lead azide
50 tonnes
Lead styphnate (lead 2,4,6-trinitroresorcinoxide)
50 tonnes
Mercury fulminate
10 tonnes
N-Methyl-n,2,4,6-tetranitroaniline
50 tonnes
Pentaerythritol tetranitrate
50 tonnes
Nitroglycerine
10 tonnes
Picric acid (2,4,6-Trinitophenol)
50 tonnes
Sodium picramate
50 tonnes
Styphnic acid (2,4,6-trinitroresorcinol)
50 tonnes
1,3,5-Triamino-2,4,6-trinitrobenzene
50 tonnes
Trinitroaniline
50 tonnes
2,4,6-Trinitroanisole
50 tonnes
Trinitrobenzene
50 tonnes
Trinitrobenzoic acid
50 tonnes
Trinitrocresol
50 tonnes
2,4,6-Trinitrophenetole
50 tonnes
2,4,6-Trinitrotoluene
50 tonnes
NOTE

Part 2: Categories of Substances and Preparations not specifically named in Part 1.

The quantities of different substances and preparations of the same category are cumulative. Where there is more than one category specified in the same entry, the quantities of all substances and preparations of the specified categories in that entry shall be summed up.

Categories of SubstanceThreshold Quantity
1.
Substances and preparations which are classified as “very toxic” as in item 1 of Schedule 1
5 tonnes
2.
Substances and preparations which are classified as “toxic” as in item 2 of Schedule 1
10 tonnes
3.
Substances and preparations which are classified as “explosive” as in item 4 of Schedule 1
10 tonnes
4.
Substances and preparations which are classified as “oxidizing” as in item 5 of Schedule 1
10 tonnes
5.
Gaseous substances and preparations, including those in liquefied form, which are gaseous at normal pressure and which are classified as “highly flammable” as in paragraph (a) of item 3 of Schedule 1
50 tonnes
6.
Substances and preparations (excluding gaseous substances and preparations covered in item 5 above) which are classified as “highly flammable” or “extremely flammable” as in paragraph (b) of item 3 of Schedule 1
5,000 tonnes
7.
Flammable substances as defined in paragraph (c) of item 3 of Schedule 1
200 tonnes

SCHEDULE 3 (Subregulation 22(1)) – ITEMS OF INFORMATION TO BE COMMUNICATED TO THE PUBLIC

SCHEDULE 4 (Regulation 3) – INDUSTRIAL INSTALLATIONS

SCHEDULE 5 (Paragraph 7(1)(b)) – NOTIFICATION OF INDUSTRIAL ACTIVITY FORM

Schedule 5 - Notification of Industrial Activity Form

SCHEDULE 6 (Subregulation 14(1) and 15(1)) – INFORMATION TO BE INCLUDED IN THE REPORT ON INDUSTRIAL ACTIVITY

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