South Australian Current Regulations South Australian Current Regulations64—Work in proximity to conductors etc
(1) Work must not be
carried out in proximity to conductors or electrical equipment unless—
(a) it
is carried out—
(i)
by a person who is suitably trained and qualified for
such work beyond the approach limits set out in this regulation for such
persons; or
(ii)
by a person who has been instructed in the identification
of high and low voltage overhead conductors and the safety aspects of work
near live powerlines beyond the approach limits set out in this regulation for
such persons; and
(b) it
is carried out beyond the approach limits set out in this regulation that are
applicable in the circumstances.
(2) However, a person
may work within the approach limits if—
(a) the
work can be carried out safely in any of the following circumstances:
(i)
there are installed suitable barriers or earthed metal
shields between the person carrying out the work and the conductors or
electrical equipment;
(ii)
the work to be carried out is testing of equipment and
the equipment is designed such that the approach limits cannot be complied
with;
(iii)
the work to be carried out is earthing of the conductors
or equipment and is carried out after the conductors have been isolated and
proved to be de-energised; and
(b)
written instructions have been given, either generally or in a particular
case, about the work and the precautions to be taken.
(2a) In addition, an
employee or contractor engaged by ElectraNet Pty Ltd
(ACN 094 428 416) may work within the approach limits if they
comply with the requirements relating to safe approach distances between
persons and electrical apparatus set out in the
ENA NENS 04-2006—National guidelines for safe access to
electrical and mechanical apparatus (as in force from time to time) published
by Standards Australia.
(3) For the purposes
of this regulation, the approach limits for a person, including an article of
clothing worn by a person, or a conductive object held or carried by the
person, are set out below—
|
Voltage of conductor or equipment |
Approach limit A |
Approach limit B |
Approach limit C |
Approach limit D |
|---|---|---|---|---|
|
(Distance in metres) | ||||
|
Insulated aerial line, not more than 1 000 V |
0.6 |
0.1 |
0 |
0 |
|
Not more than 1 000 V |
3.0 |
1.0 |
0.3 |
0 |
|
More than 1 000 V but not more than 11 kV |
3.0 |
2.0 |
0.6 |
0.3 |
|
More than 11 kV but not more than 33 kV |
3.0 |
3.0 |
0.9 |
0.45 |
|
66 kV |
4.0 |
4.0 |
1.4 |
0.7 |
|
132 kV |
5.0 |
5.0 |
2.4 |
1.5 |
|
275 kV |
6.0 |
6.0 |
4.0 |
2.6 |
|
330 kV |
7.0 |
7.0 |
5.0 |
3.7 |
where—
(a)
approach limit A applies to a person to whom none of approach
limits B, C or D applies;
(b)
approach limit B applies to a person who has conducted a risk assessment
before carrying out the work;
(c)
approach limit C applies to a person who has been instructed in the
identification of high and low voltage overhead conductors and the safety
aspects of work near live powerlines and who has conducted a risk assessment
before carrying out the work;
(d)
approach limit D applies to a person suitably qualified and trained to
work in proximity to exposed high and low voltage conductors or exposed parts
of high and low voltage electrical equipment and who has conducted a
risk assessment before carrying out the work.
(4) In this
regulation—
"risk assessment", in relation to work to which this regulation applies, means
an assessment of the risks involved in carrying out the work, taking into
account the potential for movement of tools, materials and structures during
the work.