05-74sr001

7/25/2019 05-74sr001

http://slidepdf.com/reader/full/05-74sr001 1/32

i

Version No. 001

Electricity Safety (Electric Line Clearance)

Regulations 2005

S.R. No. 74/2005

Version as at 30 June 2005

TABLE OF PROVISIONS

Regulation Page1. Objectives 1 2. Authorising provisions 1 3. Commencement 1 4. Revocation 2 5. Definitions 2 6. Prescribed voltage 2 7. Prescribed Code of Practice 2 8. Prescribed penalty provisions 2 9. Management plans 2 10. Exemptions 7

11. Expiry 7 __________________

SCHEDULE—Code of Practice for Electric Line Clearance 8

═══════════════

ENDNOTES 29

1. General Information 29

2. Table of Amendments 30

3. Explanatory Details 31

7/25/2019 05-74sr001


1

Version No. 001

Electricity Safety (Electric Line Clearance)

Regulations 2005

S.R. No. 74/2005

Version as at 30 June 2005

1. Objectives

The objectives of these Regulations are to—

(a) prescribe the Code of Practice for Electric

Line Clearance;

(b) prescribe—

(i) standards and practices to be adopted

and observed in tree pruning or clearing

in the vicinity of electric lines and the

keeping of the whole or any part of

vegetation clear of electric lines;

(ii) management procedures to minimise

danger of electric lines causing fire or

electrocution;

(iii) other matters for or with respect to the

maintenance of electric lines;

(c) provide for management plans relating to

compliance with the Code;

(d) provide for other matters authorised under

the Act relating to electric line clearance.

2. Authorising provisions

These Regulations are made under sections 89,

151 and 157 of the Electricity Safety Act 1998.

3. Commencement

These Regulations come into operation on 30 June

2005.

7/25/2019 05-74sr001


S.R. No. 74/2005

Electricity Safety (Electric Line Clearance) Regulations 2005

2

4. Revocation

The Electricity Safety (Electric Line Clearance)

(Interim) Regulations 20041 are revoked.

5. Definitions

In these Regulations—

"clear" means to cut and remove the whole of a

tree or plant;

"Code of Practice" means the Code of Practicein the Schedule.

6. Prescribed voltage

For the purposes of the definition of "low voltage

electric line" in section 3 of the Electricity Safety

Act 1998, the prescribed voltage is 1000 volts

alternating current or 1500 volts direct current.

7. Prescribed Code of Practice

For the purposes of Part 8 of the Electricity

Safety Act 1998, the Code of Practice in theSchedule is prescribed as the Code of Practice for

Electric Line Clearance.

8. Prescribed penalty provisions

For the purposes of section 90 of the Electricity

Safety Act 1998, clauses 2.1, 2.2, 3, 4.1, 6.1, 6.2,

7, 8.1 and 8.2 of the Code of Practice are the

prescribed provisions of the Code.

9. Management plans

(1) In this regulation, "responsible person" means a person referred to in section 84(4), (5), (6) or (7)

of the Electricity Safety Act 1998.

(2) A responsible person must take reasonable steps

to ensure that a management plan relating to

compliance with the Code of Practice has been

prepared and approved by the Office.

r. 4

7/25/2019 05-74sr001


S.R. No. 74/2005


3

(3) A responsible person must before 28 February in

each year prepare and submit to the Office for

approval a management plan relating to

compliance with the Code of Practice for the next

financial year that satisfies the requirements of

sub-regulation (4).

Penalty: 10 penalty units.

(4) The management plan must specify—

(a) the name, address and telephone number ofthe responsible person;

(b) the name, position, address and telephone

number of the person who was responsible

for the preparation of the plan;

(c) the name, position, address and telephone

number of the persons who are responsible

for carrying out the plan;

(d) the telephone number of a person who can be

contacted in an emergency that requires

clearance of an electric line that theresponsible person is required to keep clear

of vegetation;

(e) the objectives of the plan;

(f) a description and map of the land to which

the management plan applies identifying—

(i) the location of areas of vegetation and

the predominant category of vegetation

in those areas;

(ii) the location of areas of vegetation—

(A) determined by the relevant

municipal council to be

historically or culturally important

vegetation or vegetation of

outstanding aesthetic value; or

r. 9

7/25/2019 05-74sr001


S.R. No. 74/2005


4

(B) that is specified in a relevant

planning scheme to be of

botanical or ecological

significance; or

(C) that is the habitat of rare or

endangered species—

which may need to be pruned or cleared

to ensure compliance with the Code of

Practice;

(iii) the location of electric lines that the

responsible person is required to keep

clear of vegetation;

(g) details of the methods that will be used to

avoid and minimise the impact on vegetation

referred to in paragraph (f)(ii);

(h) the long term strategies to minimise—

(i) the risk of electric lines starting fires or

causing electrocution; and

(ii) the adverse effects of electric lines on

surrounding vegetation; and

(iii) the risk to the safe operation of electric

lines due to vegetation that is likely to

grow into or encroach on the clearance

space required by the Code of Practice;

(i) the methods proposed to be adopted for

maintaining the clearance space required by

the Code of Practice between electric lines

and vegetation;(j) the alternative methods that may be adopted

for maintaining the clearance space required

by the Code of Practice between electric

lines and vegetation if a person objects to the

methods proposed by the responsible person

and details of how the alternative methods

are to be implemented;

r. 9

7/25/2019 05-74sr001


S.R. No. 74/2005


5

(k) the methods to be adopted to prevent excess

pruning or clearing of vegetation;

(l) the length of the period between each

pruning or clearing of vegetation;

(m) the qualifications, proficiency and

experience that the responsible person will

require of the persons who are to carry out

the pruning or clearing of vegetation;

(n) details of the technical standards that theresponsible person will apply or have regard

to in connection with electric line clearance

work;

(o) the management procedures to be adopted by

the responsible person to ensure compliance

with the Code of Practice, which must

include details of the following—

(i) the procedures to be adopted to identify

locations where the pruning or clearing

of vegetation will be required;(ii) the methods to be used to calculate the

dimensions of the space beyond the

clearance space required by the Code of

Practice that must be pruned or cleared

to allow for anticipated vegetation

regrowth into the clearance space

between pruning or clearing;

(iii) the methods to be used to monitor

conditions in the area beyond the

regrowth space referred to in sub- paragraph (ii) to identify any vegetation

that could become a hazard to the

safety of the electric lines under the

range of weather conditions that can

reasonably be expected to prevail in

that area, having regard to the need to

r. 9

7/25/2019 05-74sr001


S.R. No. 74/2005


6

prune or clear that vegetation in

accordance with the Code;

(iv) the methods to be used to calculate the

length of the period required between

each pruning or clearing of vegetation;

(v) the methods and requirements that are

to be used to ensure that urgent pruning

or clearing to maintain the clearance

space between each clearing or pruning

time specified in the plan should not be

required;

(vi) the conditions under which urgent

pruning or clearing to maintain the

clearance space between each clearing

or pruning time specified in the plan

will be undertaken;

(p) a description of the information and

materials relating to electric line clearance

that the responsible person makes available

to the Office and the public and details of the

place and times at which they are available;

(q) a description of the measures that will be

used to assess the performance of the

responsible person under the management

plan;

(r) details of the audit processes that will be

used to determine the responsible person's

compliance with the Code of Practice;

(s) a dispute resolution procedure that—

(i) identifies the name, position, address

and telephone number of the

appropriate person who is responsible

for resolving disputes between the

responsible person and members of the

public; and

r. 9

7/25/2019 05-74sr001


S.R. No. 74/2005


7

(ii) identifies an external dispute resolution

procedure to be followed if the dispute

cannot be resolved directly with the

responsible person.

(5) The Office may require the responsible person to

provide further information or material in respect

of the management plan.

(6) A responsible person must not contravene or fail

to comply with a requirement of the management

plan that has been approved by the Office with

respect to that person.

Penalty: 20 penalty units.

(7) A responsible person must ensure that a copy of

the management plan approved by the Office is

available for inspection by the public at the

person's principal office in the State during normal

business hours.

10. Exemptions

The Office may exempt a responsible person fromany of the requirements of these Regulations

subject to any conditions specified by the Office.

11. Expiry

These Regulations cease to have any force or

effect on 30 June 2010.

__________________

r. 10

7/25/2019 05-74sr001


S.R. No. 74/2005


8

SCHEDULE

Regulations 5, 7

CODE OF PRACTICE FOR ELECTRIC LINE CLEARANCE

PART 1—PRELIMINARY

INTERPRETATION

1. Definitions

1.1 In this Code—

"aerial bundled cable" means an insulated electric line certified as being manufactured to AustralianStandard AS 3560 or Part 1 or Part 2 of AS 3599;

"affected person" means, in relation to the pruning orclearing of vegetation on land, an owner or occupier(including a person who is responsible for themanagement of public land) of abutting land wherethe pruning or clearing will affect the use of thatabutting land;

"away" in relation to a pole holding an electric line, meansthat section of the electric line that is not near the pole;

"clear" means to cut and remove the whole of a tree or plant;

"constructed" includes reconstructed or structurallyaltered;

"hazardous bushfire risk area" means—

(a) an area that a fire control authority has assigneda fire hazard rating of "high" under section 80of the Act; or

(b) any other area that is not an urban area unless afire control authority has assigned to that area afire hazard rating of "low" under section 80 of

the Act;

"insulated cable" means a low voltage, multi-core electricline insulated by a medium other than an air space;

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


9

"low bushfire risk area" means—

(a) an area that a fire control authority has assigned

a fire hazard rating of "low" under section 80 ofthe Act; or

(b) an urban area within the meaning of the Act;

"low voltage" means a voltage not exceeding 1000 voltsalternating current or 1500 volts direct current;

"near" in relation to a pole holding an electric line, meanswithin a distance to the pole of 1/6th of the span of the

electric line;"nominal voltage" means the voltage at which the electric

line is designed to operate;

"powerline" means an electric line with a nominal voltage

of 66 000 volts or less but does not include atransmission line;

"sag", in relation to a conductor, means the vertical

displacement of the conductor below the point atwhich the conductor is attached to the supportingstructure and includes any extra displacement caused by hot weather or high load current;

"sway", in relation to a conductor, means the horizontaldisplacement of the conductor caused by wind;

"the Act" means the Electricity Safety Act 1998;

"transmission line" means—

(a) an electric line with a nominal voltage of morethan 66 000 volts; or

(b) an electric line operating at 66 000 volts that issupported on a tower structure or that isadjacent to an electric line that has a nominalvoltage greater than 66 000 volts;

"vegetation" means the whole or any part of a tree or plant.

1.2 In this Code, all words and expressions have the samemeaning as in the Act.

1.3 The figures used in this Code are for illustrative purposesonly and are not intended to be a comprehensive depictionof the situation they illustrate or to extend the meaning of

the clause or Table to which they relate.

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


10

PART 2—CLEARANCE SPACE REQUIREMENTS FOR ALL

ELECTRIC LINES

2. Clearance space for electric lines

2.1 A responsible person must create and maintain a clearancespace in all directions around a powerline in accordancewith—

(a) Parts 2 and 3 of this Code; and

(b) Tables 9.3, 10.1, 10.2, 10.3 and 11.1 in the Scheduleto this Code.

2.2 A responsible person that owns or operates a transmissionline must create and maintain a clearance space in alldirections around the transmission line in all conditions ofsag and sway of the conductors in accordance with—

(a) Parts 2 and 4 of this Code; and

(b) Table 13.1 in the Schedule to this Code.

3. Notice requirements

Before performing any pruning or clearing required by this

Code, a responsible person must—

(a) obtain permission from—

(i) in the case of pruning, the occupier of the landon which the vegetation is to be pruned;

(ii) in the case of clearing, the owner and theoccupier of the land on which the vegetation isto be cleared and any affected person; or

(b) give at least 14 days written notice—

(i) of pruning, to the occupier of the land on which

the vegetation is to be pruned and to anyaffected person;

(ii) of clearing, to the owner and the occupier of the

land on which the vegetation is to be clearedand to any affected person; or

(c) if, after taking reasonable steps the responsible person

is unable to give notice under paragraph (b), give21 days notice of pruning or clearing in a newspaper

circulating generally in the locality of the land onwhich the vegetation is to be pruned.

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


11

4. Consultation requirements

4.1 A responsible person must ensure that before commencing

any pruning or clearing under this Code, the followingrequirements are undertaken—

(a) in the case of pruning, consultation with the occupier

of the land on which vegetation is to be pruned andwith any affected persons and the taking of reasonablesteps to negotiate—

(i) agreement with the occupier and affected

persons about the pruning to be undertaken if

the pruning will change the established practicefor that location; or

(ii) a modification of the pruning to be undertaken

or an alternative method for maintaining theclearance space if the occupier or an affected person objects to the pruning proposed in anotice under clause 3(b) or (c);

(b) in the case of pruning, consultation with the occupierof the land on which the vegetation is to be prunedand the taking of reasonable steps to negotiatemethods of disposal of debris resulting from the pruning that are acceptable to the occupier;

(c) in the case of clearing, the taking of reasonable stepsto consult and negotiate with the owner of the land onwhich vegetation is to be cleared and with affected

persons concerning—

(i) the clearing of the vegetation that is acceptableto the owner and those persons; or

(ii) a method for maintaining the clearance spaceother than clearing the vegetation that isacceptable to the owner and those persons;

(d) in the case of clearing, the taking of reasonable stepsto consult and negotiate with the owner of the land on

which the vegetation is to be cleared about methods ofdisposal of vegetation resulting from the clearing thatare acceptable to the owner;

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


12

(e) in the case of pruning or clearing, consultation withthe occupier of the land on which the vegetation is to be pruned or cleared, concerning arrangements for—

(i) access by the responsible person to clearancespaces; and

(ii) the use of chemicals.

4.2 A responsible person must have a written statement settingout the methods that the person will use to carry out theconsultation and negotiation required under clause 4.1 and

the time limits within which the consultation and negotiation

will be carried out.

4.3 A responsible person must not commence pruning orclearing the following vegetation before obtaining advice

from a qualified arborist or horticulturalist in relation to theregrowth of that vegetation—

(a) vegetation that is determined by the relevant

municipal council to be historically or culturallyimportant vegetation or vegetation of outstandingaesthetic value;

(b) vegetation that is specified in a relevant planningscheme to be of botanical or ecological significance;

(c) vegetation that is the habitat of rare or endangeredfauna or flora species.

URGENT PRUNING OR CLEARING

5. Exemptions from notice and consultation requirements—

urgent pruning or clearing

Clauses 3, 4.1, 4.2 and 4.3 do not apply to a responsible person referred to in section 84(4), 84(5), 84(6) or 84(7) of

the Act that is undertaking urgent pruning or urgent clearingrequired—

(a) as a result of encroachment or growth of vegetation

that was not anticipated in the management plan; or

(b) as a result of a tree falling or damage to a treerequiring the tree to be cleared to maintain theclearance space required by this Code; or

(c) from 1 November in any year until the end of the firedanger period declared under the Country Fire

Authority Act 1958.

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


13

6. Requirements for urgent pruning or clearing

6.1 A responsible person referred to in section 84(4), 84(5),

84(6) or 84(7) of the Act that carries out urgent pruning orurgent clearing referred to in clause 5(a) or 5(c) must notclear the vegetation for a distance exceeding 1 metre beyondthe clearance space (including the distance allowed for thesag and sway of the conductors).

6.2 A responsible person referred to in section 84(4), 84(5),84(6) or 84(7) of the Act that has carried out urgent pruningor urgent clearing referred to in clause 5 must, as soon as practicable after completing the pruning or clearing,

notify—

(a) the occupier of the land on which vegetation was pruned and affected persons of the pruning; and

(b) the owner and occupier of the land on whichvegetation was cleared and affected persons of theclearing.

6.3 The responsible person referred to in section 84(4), 84(5),84(6) or 84(7) of the Act that undertakes any urgent pruningor clearing referred to in clause 5 must record details of—

(a) where and when the pruning or clearing was

undertaken;(b) details of why the pruning or clearing was required;

(c) details of the last inspection of that section of theelectric line where the pruning or clearing was

required.

6.4 The information recorded under clause 6.3 must be kept fora period of at least 2 years.

ADDITIONAL CONSULTATION BY SPECIFIC BODIES

7. Additional duties of local councils, the Roads Corporation and

others

If a responsible person referred to in section 84(4) or (6) ofthe Act is aware of the concerns of any person about thesafety of pruning or clearing vegetation near a powerline,the responsible person must consult—

(a) if a railway or tramway company owns or operatesthat powerline, the railway or tramway company; and

(b) in all other cases, the distribution company that isresponsible for distributing power to that powerline.

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


14

8. Management procedures to minimise danger

8.1 A distribution company must, at least once a year, advise

occupiers of land above the surface of which there is a private electric line that is within its distribution area of thefollowing matters—

(a) the duties of the responsible person under this Code;

(b) the dangers of pruning and clearing vegetation;

(c) the precautions that should be taken to safely maintainthe line.

8.2 A distribution company must, in relation to its distributionarea, on the request of a responsible person advise that person—

(a) how to identify places where the pruning or clearing

of vegetation will be required; and

(b) where to obtain advice and information on methodsfor maintaining clearance between electric lines and

vegetation.

PART 3—POWERLINE CLEARANCE

9. Aerial bundled cables and insulated cables in all areas

9.1 The clearance spaces that must be cleared and maintained inall directions from a powerline, for all areas and for allnominal voltages of powerlines constructed with an aerial bundled cable or that are insulated cables are those set out inTable 9.3 in the Schedule to this Code being—

(a) the clearance spaces near the pole set out in column 1of Table 9.3; and

(b) the clearance spaces away from the pole for the spansset out in columns 2, 3 and 4 of Table 9.3.

9.2.1 The requirement for clearance space surrounding an aerial bundled cable or insulated cable under clause 9.1 does not

apply to small tree branches with a diameter of less than10 millimetres and leaves if, at least once a year, the branches and leaves are removed from the clearance spaceas required in clause 9.1.

9.2.2 Branches and leaves are not required to be annuallyremoved in accordance with clause 9.2.1 if the branches andleaves are not likely to abrade the cable before they are next

removed in accordance with this Code.

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


15

9.3 If the responsible person complies with clause 12, therequirements of clause 9.1 do not apply to existing tree branches that exceed 130 millimetres in diameter, if the branch is more than 300 millimetres from an aerial bundledcable or insulated cable.

10. Powerlines other than aerial bundled cable or insulated cables

in low bushfire risk areas

In the case of powerlines, other than those constructed withan aerial bundled cable or that are insulated cables, theclearance spaces required in low bushfire risk areas are—

(a) if the responsible person elects not to comply withclause 12, the clearance spaces set out in Table 10.1 inthe Schedule to this Code being—

(i) the clearance spaces in all directions, exceptvertically above the line for 66 000 volt powerlines where no vegetation is permitted,near the pole set out in column 1 of Table 10.1;and

(ii) the clearance spaces in all directions, exceptvertically above the line for 66 000 volt powerlines where no vegetation is permitted, awayfrom the pole for the spans set out in columns 2

and 3 of Table 10.1;

(b) if the responsible person elects to comply withclause 12 in relation to powerlines of 22 000 volts or

less, the clearance spaces set out in Table 10.2 in theSchedule to this Code;

(c) if the responsible person elects to comply with

clause 12 for 66 000 volt powerlines, the clearancespaces set out in Table 10.3 in the Schedule to thisCode.

11. Powerlines other than aerial bundled cable or insulated cables

in hazardous bushfire risk areas

11.1 If the powerlines are not constructed with an aerial bundledcable and are not insulated cables the clearance spacesrequired in hazardous bushfire risk areas are the clearance

spaces in all directions, except vertically above the line, setout in Table 11.1 in the Schedule to this Code.

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


16

11.2 The requirements of Table 11.1 in the Schedule to thisCode do not apply to tree branches above a powerline of22 000 volts or less if—

(a) the responsible person maintains a minimumclearance of 3000 millimetres above the powerline toany overhanging tree branch; and

(b) an annual risk assessment is undertaken by an arboristwho has the qualifications and experience referred toin clause 12(b); and

(c) the annual risk assessment is completed before

1 November in each year; and

(d) any overhanging branches and the trees supporting the branches do not exhibit any potentially hazardous

structural defects; and

(e) the responsible person keeps records of the annualrisk assessment on any branches and trees that are

subject to this sub-clause, including details of thecondition and possible hazards in relation to each treeand branch; and

(f) the records of the annual risk assessment are kept fora period of no less than 5 years; and

(g) the relevant powerline has mitigation measures in place that limit the phase to earth fault current or thefault duration to a level that minimizes the risk ofignition of vegetation.

12. Additional requirements for tree branches

Clauses 9.3, 10(b) and 10(c) apply in relation to tree branches if—

(a) the responsible person is a distribution company or amunicipal council that is responsible for land in anarea declared under section 81 of the Act; and

(b) the distribution company or municipal council ensuresthat an arborist, who has the qualification of NationalCertificate Level IV in Horticulture and Arboriculture

including the "Assess Trees" module, or theequivalent of that certificate, and at least 3 years of

field experience in assessing trees carries out anannual risk assessment on the tree; and

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


17

(c) the distribution company or municipal council keepsrecords of the annual risk assessment, includingdetails of the condition and possible hazards inrelation to each tree; and

(d) the records of the annual risk assessment are kept fora period of no less than 5 years.

PART 4—TRANSMISSION LINE CLEARANCE

13. Clearance space for specified directions

13.1 The clearance space vertically below a conductor of a

transmission line must be—

(a) if the conductor is at maximum sag, the distancespecified in column 1 of Table 13.1 in the Schedule tothis Code;

(b) if the conductor is in its normally observed position,the distance specified in column 3 of Table 13.1 in theSchedule to this Code.

13.2 The clearance space horizontally from the outermostconductor of a transmission line must be—

(a) if the conductor is at the limit of sway, the distancespecified in column 2 of Table 13.1 in the Schedule tothis Code;

(b) if the conductor is in its normally observed position,

the distance specified in column 4 of Table 13.1 in theSchedule to this Code.

13.3 The space above the transmission line must be kept clear of

vegetation at all times.

__________________

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


18

SCHEDULE TO CODE OF PRACTICE

TABLE 9.3

Clauses 2.1 and 9.1

MINIMUM CLEARANCE SPACES SURROUNDING

A POWERLINE—ALL AREAS

Aerial Bundled Cable or Insulated Cable

Clearance Spaces2

Near pole Away from pole

1 2 3 4

Type of

Powerline

All Spans

near the pole

Spans up toand

including40 metres

Spansexceeding 40

up to andincluding

70 metres

Spansexceeding70 metres

In all directions

AerialBundledCable

300 mm 300 mm 600 mm 900 mm

InsulatedCable

600 mm 600 mm 1000 mm 1000 mm

Note: Table 9.3 is partially illustrated in Figures 9.3 and 9.4.

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


19

Figure 9.3: ALL AREAS

Tables 9.3 and 10.1

PLAN VIEW OF AN OVERHEAD POWERLINE

NOT TO SCALE

Sch.

NEAR THE POLE

CENTRE 2/3 OF SPAN

AWAY FROM THE POLE POSITION

1/6 1/6

SPANSPAN

7/25/2019 05-74sr001


S.R. No. 74/2005


20

Figure 9.4: ALL AREAS3

Table 9.3

NOT TO SCALE

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


21

TABLE 10.1

Clauses 2.1 and 10


A POWERLINE—LOW BUSHFIRE RISK AREAS

Other Than Aerial Bundled Cable or Insulated Cable

Clearance Spaces

Near Pole Away from pole

1 2 3

Type of

Powerline

Section of all spans near the

pole

Spans up to andincluding40 metres

Spans exceeding

40 metres

Nominal voltage In all directions

Bare andCovered LowVoltage

1000 mm 1000 mm 1500 mm

6⋅6 kV, 11 kV

and 22 kV

1500 mm 1500 mm 2000 mm

66 kV 2250 mm 2250 mm 3000 mm

For 66 kV—The space vertically above the powerline must be kept clear ofvegetation.

An additional distance must be added to the clearance space to allow for thesag and sway of the conductors and for vegetation regrowth during the period between pruning times.

Note: Table 10.1 is partially illustrated in Figure 9.3 and, except for66 kV powerlines, in Figure 10.4.

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


22

TABLE 10.2

Clauses 2.1 and 10


A POWERLINE—LOW BUSHFIRE RISK AREA


Clearance Spaces

1 2 3 4

Type of Powerline

Spans up toand

including30 metres

Spansexceeding

30 up to andincluding45 metres

Spansexceeding

45 up to andincluding70 metres


Nominal voltage In all directions

Bare lowvoltage

1000 mm 1000 mm 1500 mm 1500 mm

Bare lowvoltage and

additional safetymeasures

500 mm 600 mm 800 mm 1500 mm

Bare 6⋅6 kV,11 kV and 22kV

1000 mm 1500 mm 2000 mm 2000 mm

Covered 6⋅6 kV,11 kV and22 kV

1000 mm 1250 mm 1500 mm 2000 mm

An additional distance must be added to the clearance space to allow for thesag and sway of the conductors and for vegetation regrowth during the period between pruning times.

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


23

TABLE 10.3

Clauses 2.1 and 10

CLEARANCE SPACES SURROUNDING A 66 KV POWERLINE—

LOW BUSHFIRE RISK AREA

Clearance Spaces

1 2 3 4

Type of Powerline

Spans up toand

including30 metres

Spans

exceeding30 up to and

including45 metres

Spans

exceeding45 up to and

including70 metres

Spans

exceeding70 metres

Nominal voltage In all directions except vertically above a 66 kV line

66 kV 2250 mm 2250 mm 3000 mm 3000 mm

Vertically above a 66 kV line

66 kV 3000 mm 3000 mm 3000 mm 3000 mm

An additional distance must be added to the clearance space to allow for thesag and sway of the conductors and for vegetation regrowth during the period

between pruning times.

Note: Table 10.3 is partially illustrated in Figure 10.4.

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


24

Figure 10.4: LOW BUSHFIRE RISK AREAS

Tables 10.1 and 10.3

CLEARANCE SPACE

Free of vegetation

Trees should not beremoved without prior

consultation and agreement

Tominimize pruning

only specieswith suitablegrowth habits

should be plantedunder powerlines

LOW BUSHFIRE RISK AREAS

NOT TO SCALE

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


25

TABLE 11.1

Clauses 11.1 and 11.2


A POWERLINE—HAZARDOUS BUSHFIRE RISK AREAS


Clearance Spaces

1 2 3 4 5

Type of Powerline

Spans up toand

including30 metres

Section of

all spansnear the

pole

Spansexceeding30 up to

andincluding45 metres


andincluding70 metres


andincluding

350 metres


Nominal

voltage In all directions (except vertically above the line)

Bare andcoveredlow voltage

1500 mm 1500 mm 2000 mm 2000 mm 2250 mm

6⋅6 kV,11 kV and22 kV

1500 mm 1500 mm 2000 mm 2000 mm 2250 mm

66 kV 2250 mm 2250 mm 3000 mm 3000 mm 3000 mm

For 66kV—The space vertically above the powerline must be kept clear ofvegetation.

An additional distance must be added to the clearance space to allow for the sag

and sway of the conductors and for vegetation regrowth during the period between pruning times.

Note: Clause 11.2 provides that the requirements of this table do not apply

to tree branches above a powerline of 22 000 volts or less if the branches are more than 3000 millimetres above the powerline and theresponsible person complies with the other conditions in clause 11.2.

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


26

Figure 11.1: HAZARDOUS BUSHFIRE RISK AREAS

Table 11.1

CLEARANCE SPACE

Free of vegetation

Trees should not beremoved without prior

consultation and agreement

Only specieswith suitable

growth habitsshall be planted near or under powerlines orbe allowed to remain

NOT TO SCALE

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


27

TABLE 13.1

Clauses 2.2(b), 13.1 and 13.2


A TRANSMISSION LINE

Minimum clearance space atthe limits of sag and sway of

the conductor

Minimum clearance space from the normally observed

position of the conductor

1 2 3 4

NominalVoltage

DimensionVertical

Dimension Horizontal

DimensionVertical

Dimension Horizontal

66 kV 3000 mm 3000 mm 7000 mm 12 000 mm

220 kV 3700 mm 4600 mm 8000 mm 13 000 mm

275 kV 4200 mm 5000 mm 8000 mm 13 000 mm

330 kV 4700 mm 5500 mm 9000 mm 14 000 mm

500 kV 6400 mm 6400 mm 11 000 mm 15 000 mm

For all voltages—The space vertically above the transmission line must be

kept clear of vegetation at all times.An additional distance must be added to the clearance space to allow for thesag and sway of the conductors and for vegetation regrowth during the period between clearing times if the distance between conductors exceeds 400metres.

Columns 1 and 2 set out the clearance spaces that must be kept clear ofvegetation under all conditions of sag and sway.

Columns 3 and 4 set out the distances that must be kept clear of vegetation tomaintain the clearance space from the normally observed position of theconductor

Note: Table 13.1 is partially illustrated in Figures 13.1 and 13.2.

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


28

Figure 13.1: END VIEW OF THE TRANSMISSION LINE

Table 13.1

Figure 13.2: SIDE VIEW OF THE TRANSMISSION LINE

Table 13.1

═══════════════

Sch.

7/25/2019 05-74sr001


S.R. No. 74/2005


29

ENDNOTES

1. General Information

The Electricity Safety (Electric Line Clearance) Regulations 2005,S.R. No. 74/2005 were made on 28 June 2005 by the Governor in Councilunder sections 89, 151 and 157 of the Electricity Safety Act 1998, No. 25/1998 and came into operation on 30 June 2005: regulation 3.

The Electricity Safety (Electric Line Clearance) Regulations 2005 will sunseton 30 June 2010: regulation 11.

Endnotes

7/25/2019 05-74sr001


S.R. No. 74/2005


30

2. Table of Amendments

There are no amendments made to the Electricity Safety (Electric Line

Clearance) Regulations 2005 by statutory rules, subordinate instruments andActs.

Endnotes

7/25/2019 05-74sr001


S.R. No. 74/2005


31

3. Explanatory Details

1 Reg. 4: S.R. No. 182/2004.

2 Sch. (Table 9.3): Clause 9.2 provides that small branches and leaves may be

allowed to grow within the dimensions in Table 9.3 for aerial bundled cable

and insulated cable if they are cut annually to create a clearance space inaccordance with the Table. However, branches and leaves are not required to

be annually removed if they are not likely to abrade the cable before they arenext removed in accordance with the Code.

3 Sch. (Figure 9.4): Clause 9.2 provides that small branches and leaves may

be allowed to grow within the clearance space surrounding an aerial bundledcable and insulated cable if they are cut annually to create a clearance spacein accordance with Table 9.3. However, branches and leaves are not requiredto be annually removed if they are not likely to abrade the cable before they

are next removed in accordance with the Code.

Endnotes

Documents

05-74sr001