Part 1 of IEC 62013, but which are nevertheless important for the safety and working conditions of the user. It may also be applied to caplights for use in mines not likely to be endangered by firedamp. When this part of the Standard is used as a "standalone" document for non - gassy mines any relevant constructional requirements should be the subject of agreement between the supplier and the user and, where possible, be as described in IEC 62013-1.