
1 

(1) These Regulations may be cited as the Control of Substances Hazardous to Health (Amendment) Regulations 1992 and shall come into force on 1st January 1993.
(2) In these Regulations, “the principal Regulations” means the Control of Substances Hazardous to Health Regulations 1988.
2 

(1) The regulations of, and Schedule 2 to, the principal Regulations shall be amended in accordance with Schedule 1 to these Regulations.
(2) For Schedule 1 to the principal Regulations there shall be substituted the Schedule set out in Schedule 2 to these Regulations.
(3) There shall be inserted as Schedule 10 to the principal Regulations the Schedule set out in Schedule 3 to these Regulations.
Signed by order of the Secretary of State.
Patrick McLoughlin
Parliamentary Under Secretary of State,
Department of Employment
6th October 1992
SCHEDULE 1
Regulation 2(1)
1 
In regulation 2(1) of the principal Regulations, after the definition of “approved list” insert the following definition—“
“carcinogen” means—
(a) any substance or preparation which if classified in accordance with the classification provided for by regulation 5 of the Classification, Packaging and Labelling of Dangerous Substances Regulations 1984 (S.I. 1984/1244, amended by S.I. 1986/1922, S.I. 1988/766, S.I. 1989/2208 and S.I. 1990/1255) would be required to be labelled with the risk phrase R45 (may cause cancer) or R49 (may cause cancer by inhalation), whether or not the substance or preparation is required to be classified in accordance with those Regulations; or
(b) any substance or preparation listed in Schedule 10 and any substance or preparation arising from a process specified in that Schedule which is a substance hazardous to health;
”.
2 
In regulation 4(2)(a) of the principal Regulations, for the words “exceeding 0.1 per cent.” “equal to or greater than 0.1 per cent. by mass”.
3 
In regulation 6(2) of the principal Regulations, after the words “shall be reviewed” insert the words “regularly, and”.
4 
In regulation 7 of the principal Regulations—
(a) in paragraph (2) after the word “health” insert the words “except to a carcinogen”;
(b) after paragraph (2) insert the following new paragraph—“
(2A) Without prejudice to the generality of paragraph (1), where the assessment made under regulation 6 shows that it is not reasonably practicable to prevent exposure to a carcinogen by using an alternative substance or process, adequate control of exposure to the carcinogen shall be achieved by the application of all the following measures, namely—
(a) the total enclosure of the process and handling systems unless this is not reasonably practicable;
(b) plant, processes and systems of work which minimise the generation of, or suppress and contain, spills, leaks, dust, fumes and vapours of carcinogens;
(c) limitation of the quantities of a carcinogen at the place of work;
(d) keeping the number of persons who might be exposed to a carcinogen to a minimum;
(e) prohibiting eating, drinking and smoking in areas that may be contaminated by carcinogens;
(f) the provision of hygiene measures including adequate washing facilities and regular cleaning of walls and surfaces;
(g) the designation of those areas and installations which may be contaminated by carcinogens, and the use of suitable and sufficient warning signs; and
(h) the safe storage, handling and disposal of carcinogens and use of closed and clearly labelled containers.”.
(c) in paragraph (3) for the words “paragraph (2)” substitute the words “paragraph (2) or (2A), as the case may be,”;
(d) after paragraph (6) insert the following new paragraph—“
(6A) In the event of the failure of a control measure which might result in the escape of carcinogens into the workplace, the employer shall ensure that—
(a) only those persons who are responsible for the carrying out of repairs and other necessary work are permitted in the affected area and they are provided with appropriate respiratory protective equipment and protective clothing; and
(b) employees and other persons who may be affected are informed of the failure forthwith.”.
5 
In regulations 10(3)(a) and 11(3) of the principal Regulations for the words “30 years” substitute the words “40 years” in both places where those words appear.
6 
In Schedule 2 to the principal Regulations—
(a) in item 1, column 1 at the end, after the words “0.1 per cent.” insert the words “by mass”;
(b) in item 11 after the words “0.1 per cent.” insert the words “by mass”.
SCHEDULE 2
Regulation 2(2)

SCHEDULE 1
Regulations 2(1), 7(4) and 12(2)

The maximum exposure limits of the dusts included in the list below refer to the total inhalable dust fraction, unless otherwise stated.

  Reference periods
  Long-term maximum exposure limit (8-hour TWA reference period) Short-term maximum exposure limit (10-minute reference period)
Substance Formula ppm mg m−3 ppm mg m−3
Acrylamide CH2=CHCONH2 — 0.3 — —
Acrylonitrile CH2=CHCN 2 4 — —
Arsenic and compounds except arsine (as As) As — 0.1 — —
Benzene C6H6 5 16 — —
Bischloromethyl) ether ClCH2OCH2Cl 0.001 0.005 — —
Buta—1,3—diene CH2=CHCH=CH2 10 22 — —
2—Butoxyethanol C4H9OCH2CH2OH 25 120 — —
Cadmium and cadmium compounds, except cadmium oxide fume and cadmium sulphide pigments (as Cd) Cd — 0.05 — —
Cadmium oxide fume (as Cd) CdO — 0.05 — 0.05
Cadmium sulphide pigments (respirable dust as Cd) CdS — 0.04 — —
Carbon disulphide CS2 10 30 — —
Chromium (VI) compounds (as Cr) Cr — 0.05 — —
1,2—Dibromoethane (Ethylene dibromide) BrCH2CH2Br 0.5 4 — —
Dichloromethane CH2Cl2 100 350 — —
2,2'—Dichloro—4,4'—methylene dianiline (MbOCA) CH2(C6H3C1NH2)2 — 0.005 — —
2—Ethoxyethanol C2H5OCH2CH2OH 10 37 — —
2—Ethoxyethyl acetate C2H5OCH2CH2OOCCH3 10 54 — —
Ethylene oxide CH2CH2O 5 10 — —
Formaldehyde HCHO 2 2.5 2 2.5
Grain dust  — 10 — —
Hydrogen cyanide HCN — — 10 10
Isocyanates, all as—NCO  — 0.02 — 0.07
Man-made mineral fibre  — 5 — —
2—Methoxyethanol CH3OCH2CH2OH 5 16 — —
2—Methoxyethyl acetate CH3COOCH2CH2OCH3 5 24 — —
Nickel and its inorganic compounds (except nickel carbonyl): Ni
water-soluble nickel compounds (as Ni)  — 0.1 — —
nickel and water-insoluble nickel compounds as (Ni)  — 0.5 — —
Rubber process dust  — 8 — —
Rubber fume  — 0.6 — —
Silica, respirable crystalline SiO2 — 0.4 — —
Styrene C6H5CH=CH2 100 420 250 1050
1,1,1—Trichloroethane CH3CCl3 350 1900 450 2450
Trichloroethylene CCl2=CHCl 100 535 150 802
Vinyl chloride CH2=CHCl 7 — — —
Vinylidene chloride CH2=CCl2 10 40 — —
Wood dust (hard wood)  — 5 — —




SCHEDULE 3
Regulation 2(3)

SCHEDULE 10
Regulation 2(1)


 Aflatoxins
 Arsenic and inorganic arsenic compounds
 Beryllium and beryllium compounds
 Bichromate manufacture involving the roasting of chromite ore
 Electrolytic chromium processes, excluding passivation, which involve hexavalent chromium compounds
 Mustard gas (B,B'Dichlorodiethyl sulphide)
 Calcining, sintering or smelting of nickel copper matte or acid leaching or electrorefining of roasted matte
 Ortho-toluidine
 Coal soots, coal tar, pitch and coal tar fumes
 The following mineral oils:
(i) unrefined and mildly refined vacuum distillates;
(ii) catalytically cracked petroleum oils with final boiling points above 320C;
(iii) used engine oils;
 Auramine manufacture
 Leather dust in boot and shoe manufacture, arising during preparation and finishing
 Hard wood dusts
 Isopropyl alcohol manufacture (strong acid process)
 Rubber manufacturing and processing giving rise to rubber process dust and rubber fume
 Magenta manufacture
 4—Nitrobiphenyl
