BS EN ISO 7225:2007 pdf free.Gas cylinders — Precautionary labels.
Introduction
BS EN ISO 7225 belongs to a series of standards specifying gas cylinder identification requirements:
— ISO 13769, Gas cylinders — Stamp marking
ISO 7225, Gas cylinders — Precautionary labels
– ISO 32, Gas cylinders for medical use — Marking for identification of content
The purpose of using precautionary labels on gas cylinders is to facilitate the identification of each cylinder and its content and to warn of the principal hazards associated with the said contents. Such labels can also serve to give other essential information such as the names and chemical formula of the gas or gas mixture and supplementary instructions on precautionary measures.
BS EN ISO 7225 specifies the design, content (i.e. hazard symbols and text) and application of precautionary labels intended for use on individual gas cylinders containing single gases or gas mixtures. Labels for cylinders of bundles and labels for bundles are not covered by this International Standard.
3 Design and content of precautionary labels
3.1 General
Precautionary labels shall be in accordance with the United Nations Recommendations on the Transport of Dangerous Goods — Model Regulations or other applicable transport regulations. See Annex A for examples of hazard labels.
Precautionary labels shall be designed, attached and maintained so they are clearly visible and legible. Precautionary labels shall consist of two components:
a) a diamond-shaped part or parts, i.e. a primary hazard label and — in cases where two or three kinds of hazard require identification — one or two subsidiary hazard labels;
b) a panel.
Where two or three hazard labels are necessary, the subsidiary hazard label(s) shall be placed to the right of the primary hazard label. Labels may overlap as illustrated in Figures 1 to 3. In all cases, the labels representing the primary hazard and the numbers appearing on any label shall remain fully visible, and the symbols shall be recognizable.BS EN ISO 7225 pdf download.