BS EN 60079-19 gives guidance on the practical means of maintaining the electrical safety and performance requirements of repaired equipment. It also defines procedures for maintaining, after repair, overhaul or reclamation, compliance of the equipment with the provisions of the certificate of conformity or with the provisions of the appropriate explosion protection standard where a certificate is not available.
Part 19 of BS EN 60079
• Gives instructions, principally of a technical nature, on the repair, overhaul,
reclamation and modification of a certified equipment designed for use in explosive
atmospheres.
• Is not applicable to maintenance, other than when repair and overhaul cannot be
disassociated from maintenance, neither does it give advice on cable entry
systems which may require renewal when the equipment is re-installed.
• Is not applicable to type of protection 'm'.
• Assumes that good engineering practices are adopted throughout.
Much of the content of this standard is concerned with the repair and overhaul of electrical rotating machines. This is not because they are the most important items of explosion-protected equipment but rather because they are often major items of repairable capital equipment in which, whatever type of protection is involved, sufficient commonality of construction exists as to make possible more detailed instructions for their repair, overhaul, reclamation or modification.
When electrical equipment is installed in areas where dangerous concentrations and quantities of flammable gases, vapours, mists or dusts may be present in the atmosphere, protective measures are to be applied to reduce the likelihood of explosion due to ignition by arcs, sparks or hot surfaces produced either in normal operation or under specified fault conditions.
BS EN 60079-19 recognizes the necessity of a required level of competence for the repair, overhaul and reclamation of the equipment. Some manufacturers may recommend that the equipment be repaired only by them.
In the case of the repair, overhaul or reclamation of equipment that has been the subject of design certification, it may be necessary to clarify the position of the continued conformity of the equipment with the certificate.
Contents of BS EN 60079-19 includes:
• Scope
• Normative references
• Terms and definitions
• General principles
• Statutory requirements
• Instructions for the user
• Instructions for the repair facility
• Additional requirements for the repair and overhaul of equipment with type of
protection "d" (flameproof)
• Application
• Repair and overhaul
• Reclamation
• Modifications
• Additional requirements for the repair and overhaul of equipment with type of
protection "i" (intrinsic safety)
• Additional requirements for the repair and overhaul of equipment with type of
• protection "p" (pressurized)
• Additional requirements for the repair and overhaul of equipment with type of
protection "e" (increased safety)
• Additional requirements for the repair and overhaul of equipment with type of
protection "n" (non-sparking)
• Additional requirements for the repair and overhaul of equipment covered by
IEC 60079-26
• Additional requirements for the repair and overhaul of equipment with type of
protection ‘tD’
• Additional requirements for the repair and overhaul of equipment with type of
protection
pressurization “pD”
• Identification of repaired equipment by marking
• Knowledge, skills and competencies of “Responsible Persons” and “Operatives”
• Requirements for measurements in flameproof equipment during
• Overhaul, repair and reclamation (including guidance on tolerances)
• Normative references to international publications with their corresponding
European publications
• Determination of maximum gap of reclaimed parts