AS/NZS 3800:2020 pdf download.Electrical equipment for explosive atmospheres – Repair and overhaul (IEC 60079-19:2015 (ED.3.1), MOD).
4 General
4.1 General principles
This clause covers those aspects of repair, overhaul, reclamation, alteration, and modification which are common to all explosion-protected equipment. Subsequent clauses provide instructions for the additional requirements relevant to specific types of protection. When equipment incorporates more than one type of protection, reference shall be made to the appropriate clauses.
NOTE 1 Additional requirements for types of protection m. “o and q” have not been defined,
Assuming that repairs and overhauls are carried out using good engineering practices, then repairs and overhauls impacting the type of protection shall be presumed as being in conformity with the certificate when manufacturer’s parts or parts specified in 4.4.1 are used and repairs or alterations are carried out specifically as detailed in this standard, the certificate documentation under 4.4.1.5, and when performed by competent persons as provided in 4.4.1.3.
In circumstances where the relevant documentation in accordance with 4.4.1.5.1 is not available, then the repair or overhaul shall be carried out on the equipment in accordance with this standard and other relevant standard(s). The steps taken to obtain the relevant documentation shall be recorded in the repair facility records (see 4.4.1.5.3).
If the equipment has been modified, it shall comply with the requirements of 4.4.3 where a new certificate is required to be prepared or the equipment is no longer suitable for use in a hazardous area.
NOTE 2 In some countries, legal requirements do not permit repair without relevant documentation to Group I equipment unless subjected to complete retesting and a new certificate issued.
If other repair or alteration techniques are used which are not in accordance with this standard, then it will be necessary to ascertain, from the manufacturers, andlor the certification authority, the suitability of the equipment for continued use in an explosive atmosphere.
NOTE 3 Repair of equipment which has no marking plate should be avoided
NATIONAL VARIATIONS:
Delete the following note:
NOTE 1: Additional requirements for types of protection “m, o and “q” have not been defined.
Delete paragraph 3 and replace with the following:
In circumstances where adequate documentation, in accordance with 4.4.1.5.1, is not available, then with the agreement of the user, the repair or overhaul shall be carried out on the equipment in accordance with this standard and any other relevant standard(s). The steps taken to obtain the certificate documents shall be recorded in the repair facility records (see 4.4.1.5.3). Where insufficient documentation is available to completely define the explosion-protected characteristics of the equipment, repair or overhaul alternatives shall be prevented for the following equipment:
(a) Equipment for Group I applications.
(b) Type of protection si”, “rn” and “s”. After NOTE 3 add the following:
NOTE 4: Where the certificate of conformity has been cancelled due to safety concerns, repair or overhaul should not proceed.
4.2 Statutory requirements for repair facility
The repair facility, which may be the manufacturer, user or a third party repair, shall be aware of any specific requirements in relevant national legislation which may govern the repair or overhaul operation.
NATIONAL VARIATION:
Delete paragraph and replace with the following:
4.2.1 RepaIr facility
The repair facility, which may be the manufacturer, user or a third party repairer, shall be aware of any specific requirements in relevant legislation which may govern the repair or overhaul operation, such as competency levels and the responsibility to disclose residual occupational health and safety risk identified in equipment during repair or overhaul.
In the case of the repair, overhaul, reclamation, alteration or modification of equipment which has been the subject of design certification, the position of the continued compliance of the equipment with the certificate shall he clarified and the end-user notified.
Repair facilities involved in the repair, overhaul, and/or modification of explosionprotected electrical equipment shall have their capabilities for compliance with this standard independently verified.AS/NZS 3800 pdf download.