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5.3.3 Inspection
5.3.3.1 The purpose of inspection is to verify that an electrical installation is in accordance
with safety regulations and the specified technical requirements of the relevant standards;
the inspection may include verification of the normal state of that installation.
New electrical installations as well as modifications and extensions of existing installations
shall be inspected prior to
5.3.3.3
Inspections shall be carried out with reference to relevant electrical drawings and
specifications.
5.3.3.3.101 In special cases, the person responsible for an electrical installation may decide
that the inspections can be carried out without drawings and specifications, for example
in simple and clearly arranged installations.
5.3.3.5.102
Inspections shall be carried out using suitable tools, equipment and devices and protective
equipment that prevent hazards, duly considering the hazards of uninsulated live parts.
5.101.6.1
When visually inspecting an installation it is checked whether:
a) the necessary drawings are present and the correct information is indicated;
b) the different (installation) parts are clearly identifiable;
c) any damage present does not cause a hazard;
d) the electrical equipment at least corresponds to the installation requirements;
e) the gangways intended for
5.101.6.2
When inspecting an installation by measuring and testing, it shall be checked that
the requirements have been met as regards:
a) the protective conductors and their connections;
b) the circuit impedances of the electrical system;
c) the earth distribution resistance of earth electrodes;
d) the insulation resistance of each section of the installation;
e) the safe
5.101.6.3
The following criteria shall apply to measurement and testing according to
5.101.6.2:
a) The uninterrupted state of the protective conductors and their connections shall be
measured with:
1) a measurement of the phase-earth circuit impedance or
2) a measurement of all the separate protective conductors with a measurement current
greater than or equal to 0.2 A.
b)
5.101.6.5
The earth distribution resistance of earth electrodes shall be measured using an alternating
voltage.
NOTE If the measurement is not reliable in urban areas, measuring the circuit impedances
will suffice.
5.101.6.8
It shall be established through measuring that the response current and time of earth
leakage circuit breakers do not exceed the values assigned. The proper operation of
the test button may only be checked after the measurements.
5.102.1 General
The electrical installations of extensive, complex and sizeable work equipment shall
be inspected according to
5.101.
Safety functions, such as emergency shutdown switches and collision protection devices
of such extensive, complex and sizeable work equipment shall be checked at least once
a year.
5.102.2
Electrical work equipment shall be inspected with suitable regularity.The time between two successive inspections depends on:
a) the frequency of use;
b) the expertise of the user;
c) the environment;
d) the risk of damage.
NOTE The purpose of regular inspections is to detect any defects that have occurred during
use and that pose a hazard.
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Nieuwe NEN 3140 sterk doorontwikkeld
Als trainer en adviseur NEN 3140, werk ik nu alweer een paar weken met de nieuwe NEN 3140 + A2 (December 2018). Deze nieuwe NEN 3140 is sterk doorontwikkeld. Veel zaken waar je in de praktijk vaak tegen aanloopt, zijn nu scherper en concreter geformuleerd. Ook zijn technische, organisatorische en maatschappelijke ontwikkelingen meegenomen in deze nieuwe uitgave.
Dat begint al bij de installatieverantwoordelijke
Veiligheid mag geen sluitpost zijn
Juridisch adviseur geeft uitleg over het belang van NEN 3140
Veiligheid is van groot belang bij elektrotechnische installaties. De norm NEN 3140 beoogt deze veiligheid voldoende te waarborgen. Toch is er in de praktijk nog wat te winnen, stelt mr. Klaas van der Kolk van juridisch advies- en trainingsbureau Nova Juridica. “Uiteindelijk gaat het erom dat iedereen aan het eind van de dag weer veilig