Site drawings outlining the hazardous areas with the required equipment protection level (EPL) • For gas: the required equipment group (IIA, IIB or IIC) and the temperature class • For dust: the required equipment group (IIIA, IIIB or IIIC) and the maximum surface temperature • Characteristics of the apparatus: rated temperatures, type of protection, IP rating, corrosion resistance • records sufficient to enable the explosion-protected equipment to be maintained in accordance with its type of protection (see EN 60079-0) (for example list and location of apparatus, spares, technical information, manufacturer‘s instructions) • copies of previous inspection records