# The Dangerous Substances in Harbour Areas Regulations 1987, Paragraph 1


The hazard warning sign to be used on a hazard warning panel, on a label to be affixed to a compartment tank barge or to be affixed to a freight container, portable tank or receptacle shall be that shown in column 3 of Part I of this Schedule for the classification of the substance shown ;in the corresponding entry in column 2 of that Part, and the signs shall conform in form and colour to those shown in the said column 3, except that–
(a) in the case of the signs for the classifications “non-flammable compressed gas”, “flammable gas”, “flammable liquid” and “substance which in contact with water emits flammable gas”, the symbol and the lettering may be in white;
(b) in the case of the sign for the classification “spontaneously combustible substance”, the lettering may be in white;
(c) in the case of the signs for the classifications “oxidizing substance” and “organic peroxide” the part of the symbol showing the flame may be completely in black;
(d) in place of the word “toxic”, the word “poison” may be used wherever it occurs;
(e) in place of the word “flammable”, the word “inflammable” may be used wherever it occurs;
(f) the sign may show the class number in accordance with the IMDG Code and in the case of Classes 1 and 7 must show the Class number.

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Source: https://www.legislation.gov.uk/uksi/1987/37/schedule/1/paragraph/1 (the official version)
Page: https://openlegislation.uk/dangerous-substances-in-harbour-areas-regulations-1987/schedule-1/paragraph-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.