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VDL (E3.1) 10/2020 Page 72/196
• Suitability and functionality of technical ventilation systems, gas warning systems, inerting devices, de-
vices, protective systems, or control or regulating devices in the sense of Directive 2014/34/EU as well
as explosive devices in the sense of TRGS 725
• Suitability and implementation of the measures determined on the basis of the risk assessment
• Suitability, functionality, and installation of work equipment and related connection devices that are not
devices, protective systems, or safety, control, or regulating devices in the sense of Directive
2014/34/EU, but are relevant for explosion protection
• Suitability of other work equipment, such as ladders, containers, tools, for use in hazardous areas
• Suitability and functionality of other equipment and building components related to explosion protection
(e.g. lightning protection systems, conductivity of floors and linings)
• Suitability of the personal protective equipment (PPE (e.g., the electrostatic discharge capacity of work
shoes or gloves )
• The existence and legibility of the labels for potentially explosive areas in which measures to avoid
ignition sources are required
• The existence and suitability of the organizational measures required for explosion protection
• The implementation of measures relevant to explosion protection from official requirements
• Certificates proving the correct installation of system parts, provided that their correct installation cannot
or only partially be ascertained during the technical inspection, e.g. flame-arresting fittings or limit
switches
7.4.1.3 Checking the deadlines for the recurring tests
When doing so, assess whether the system can be operated safely until the next specified recurring test.
7.4.1.4 Verifying the maintenance plan
When doing so, assess whether the maintenance plan is suitable for maintaining the safety of the Ex system
until the next recurring test. The maintenance plan can also be used to test the technical protective
measures for explosion protection of the explosive system. It can also be part of an integrated management
system.
• Definition of responsibilities for the maintenance plan, definition of maintenance and inspection con-
tent, e.g. when creating work plans, processing the maintenance and inspection content, e.g. in the form
of work plans, the assessment of deviations from the target state, and any necessary repairs.
• Determination of maintenance and inspection measures and deadlines for devices, protective systems,
safety, control and regulating devices as well as their connections and interactions, technical ventilation
systems, gas warning devices and inerting devices and MSR devices for explosion protection
• Comprehensible description of the required maintenance measures and deadlines e.g. in the form of
work plans, work equipment of comparable design can be summarized.
• Implementation of the maintenance plan: Implementation of maintenance and inspection in accordance
with the defined maintenance plan, notification of completion of the implementation of maintenance and
inspection, documentation of identified repair needs and implementation of the repairs. Necessary
maintenance measures must be carried out immediately. Maintenance work must be carried out by
qualified specialist personnel who have sufficient experience in the maintenance of Ex systems based
on the maintenance plan. The maintenance plan and the implementation of maintenance measures
must be clearly documented.
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