Subject of professional inspection - revision
1. Electrical circuit - is a circuit equipped with a separate
circuit breaker through which electric current can pass. According to the
design, switchgear is divided into:
2. electric light circuit - is a current-carrying circuit
designed for the fixed connection of luminaires or luminaires connected to
sockets controlled by switches.
3. socket electrical circuit - single-phase or three-phase, with
sockets for connecting appliances.
4. Appliance electrical circuit - single-phase or three-phase,
designed for fixed connection of appliances.
The circuit inspection begins at the output terminals of the supply equipment
and ends at the input terminals of the consumer. The circuit includes all
installation and control devices /installation boxes, sockets, switches,
controls, etc./ supplied by this circuit.
In terms of safety, we classify the premises into:
- safe spaces - safe spaces are those that reduce the risk of electric
shock
- hazardous areas - hazardous areas are those areas where there is either
a permanent or transient risk of electric shock under the influence of
the environment
- Particularly hazardous areas - Particularly hazardous areas are areas
where special circumstances or environmental influences increase the
risk of electric shock
Description of revision work
1. Introductory works
Reporting to the operator, completing the entry formalities, finding the person
responsible for the operation of the equipment under review and discussing the
review plan. Addition to the operator's records of new equipment being brought
into operation and removal of decommissioned equipment from the operator's
review plan. Familiarisation with the operation and safety precautions,
documentation and its availability. Checking compliance with the measures
imposed by the occupational safety and supervisory authorities. Checking the
qualifications of the staff responsible for the operation. Checking the
knowledge of the users, checking that training and periodic examinations have
been carried out. Checking the authorisations of natural and legal persons
carrying out repairs to the substation under inspection. Checking the first
inspection report. environmental determination protocol. Method and possibility
of switching off the electrical equipment or part of it. Discussion of the
interaction of the work of the inspection technician with the production
activity of the operator.
2. Carrying out the revision
A description of the activity is given for each item in this group:
1. External visual inspection
- 1.1 Placement inspection - assess wiring, installation, control and
fusing
apparatus in relation to other equipment, serviceability, legibility of
data.
Installation box, height of apparatus placement, crossing and concurrence of
wiring with other equipment, height and placement of bare wiring. Distance
of
outside lines from roads and lines of all kinds, from farm buildings and
installations, from public areas.
- 1.2 Inspection of installation - the installation of electrical
installations on
the surface, under plaster, on combustible substrates, in floor and ceiling
structures, in the ground, in the air shall be assessed.
- 1.3 Design inspection - passages through structures, walls, spacing
of
fixings
and
supports, cable duct and shaft fittings, protection against fire spread,
fixing
of apparatus, bends and taps are inspected.
- 1.4 Inspection of external influences - protection against mechanical
damage,
thermal radiation, warming and ventilation are inspected.
- 1.5 Connection inspection - the method of connection of electrical
apparatus,
the routing of leads to electrical apparatus, junction boxes and
distribution
boards are assessed.
- 1.6 Marking Inspection - the switching surfaces of apparatus,
external
control
terminals and nameplates are inspected.
- 1.7 Cover inspection - inspection of covers of interlocking, control,
and
installation apparatus.
- 1.8 Dangerous contact protection inspection - inspect the integrity
of the
protective circuit, protective bonding and protective conductor connections.
- 1.9 Corrosion protection inspection - inspection of the condition of
the
protective coating and determine the extent of corrosion.
2. Internal visual inspection
- 2.1 PND protection inspection - the integrity of the protection
circuit,
protective bonding, connections and protective conductor connections are
inspected.
- 2.2 Fusing inspection - the magnitude of the fusing element values
are compared
with the cross section of the conductors.
- 2.3 Serviceability inspection - the function and preservation of the
characteristics of the apparatus, the condition of the connecting and
bonding
conductors /including accessories/ are inspected.
3. Conclusion of the professional inspection - revision
- 1. Discussions with the operator or owner
Discussion of on-site rectification procedure, determination of conditions
for further safe and economical operation.
- 2. Records
Making a record of the condition found during the inspection. A record of
the determination of the progress of work to remedy the defects found,
specifying the conditions necessary for continued safe and economical
operation. Recording of the dates of further necessary inspections and the
deadlines set for the elimination of the deficiencies found.
- 3. Submission of the inspection record
The report on the periodic inspection of the distribution equipment shall be
submitted, at least in in triplicate, to the person responsible for the
operation, subject to written acknowledgement of receipt of this document.
