Inspection and testing plan of electrical equipment procedure May 2013.pdf

C:\Documents and Settings\lwhite\Local Settings\Application Data\TOWER Software\TRIM5\TEMP\CONTEXT.5048\B D 11 30958 Procedure - H&S - CS-OHS-32 - Maintenance and Testing of Entity Works, Electrical ~ CS Energy Registered.DOC Page: 1 of 19

THIS DOCUMENT IS UNCONTROLLED IN HARD COPY FORMAT

CS-OHS-32 (11/05)

CS ENERGY PROCEDURE FOR

MAINTENANCE AND TESTING OF ENTITY WORKS, ELECTRICAL INSTALLATIONS AND ELECTRICAL EQUIPMENT

CS-OHS-32 Responsible Officer: Health and Safety Manager Approved: General Manager Operations

Contents 1.0 Purpose.................................................................................................................... 2 2.0 Scope ....................................................................................................................... 2 3.0 Definitions ................................................................................................................ 2 4.0 Maintaining Entity Works .......................................................................................... 3

4.1 General ................................................................................................................. 3 4.2 Safety and clearance requirements design/construction/maintenance work ....... 3 4.3 Earthing and protection ......................................................................................... 4 4.4 Construction or excavation work in proximity to overhead or underground electrical lines ................................................................................................................. 4 4.5 Vegetation Management ...................................................................................... 4

5.0 Maintaining Electrical Installation/Equipment Requirements ..................................... 5 5.1 General ................................................................................................................. 5 5.2 Electrical Contractor Licensee ............................................................................... 6

6.0 Specific AS/NZS 3000 Testing ................................................................................. 6 6.1 Earth Resistance Test (Test 3) .............................................................................. 6 6.2 Equipotential Bonding Conductor Test (Test 4) ..................................................... 8 6.2 Fault Loop Impedance Test (Test 8) ..................................................................... 8 6.3 Inspection and maintenance of integrity of insulation ............................................ 9

7.0 Recording Inspections and Testing .......................................................................... 9 7.1 General ................................................................................................................. 9

8.0 Legislative and CS Energy References .................................................................... 9 9.0 Associated Documentation ..................................................................................... 10

Attachment 1 Visual Inspection Check Sheets ........................................................... 11 Attachment 2 Electrical Tests Check Sheet ............................................................... 17 Attachment 3 Electrical Installation/Electrical Equipment Certificate of Testing and Compliance .................................................................................................................. 19

Issue Date Nature of Changes

08/11/2005 Original Issue

C:\Documents and Settings\lwhite\Local Settings\Application Data\TOWER Software\TRIM5\TEMP\CONTEXT.5048\B D 11 30958 Procedure - H&S - CS-OHS-32 - Maintenance and Testing of Entity Works, Electrical ~ CS Energy Registered.DOC

[Document no] Page: 2 of 19

1.0 Purpose The purpose of this procedure is to detail specific electrical entity, installation and equipment compliance, inspection, testing and maintenance requirements. The procedure provides guidance and check sheets that are to be used to document the inspection and testing of modified or new electrical installations and provide evidence of compliance with AS/NZS 3000 Electrical Installations and AS301 Electrical Installations Testing and Inspection Guidelines.

2.0 Scope This procedure is applicable to all electrical installations and equipment that are part of CS Energy Power Stations and workplaces, and all CS Energy employees and any other persons working at these locations. This Procedure is to be used in conjunction with Power Station specific Modification Procedures and AS/NZS 3000, Section 6 requirements. This Procedure does not address the specific inspection and testing frequencies of portable electrical equipment or the inspection and testing frequencies of residual current devices. Refer to CS Energys Maintenance and Testing of Portable Electrical Equipment, RCDs and Tools procedure.

3.0 Definitions Electrical contractor licensee

is a person nominated on CS Energys Electrical Contractors License responsible for inspection and testing of electrical installations.

Electrical equipment is any apparatus, appliance, cable, conductor, fitting, insulator, material, meter or wire: used for controlling, generating, supplying, transforming or transmitting

electricity at a voltage greater than extra low voltage, or operated by electricity at a voltage greater than extra low voltage, or that is, or that forms part of, a cathodic protection system. Note: electrical equipment does not include any apparatus, appliance, cable, conductor, fitting,

insulator, material, meter or wire forming part of a vehicle if it forms part of a unit of the vehicle that provides propulsion for the vehicle, or its source of electricity is a unit of the vehicle that provides propulsion for the vehicle.

Electrical installation is a group of items of electrical equipment, if: all the items are permanently electrically connected together, and the items do not include items that are works of an electricity entity, and electricity can be supplied to the group from the works of an electricity entity or

from a generating source. Note: an item of electrical equipment can be part of more than 1 electrical installation and for

item one above: an item of electrical equipment connected to electricity by a plug and socket is not

permanently electrically connected, and

connection achieved through using works of an electricity entity must not be taken into consideration for deciding whether items of electrical equipment are electrically connected.



Modification procedures are procedures, established at each CS Energy Power Station, that detail specific process, documentation and approval requirements for undertaking modifications to plant and equipment.

Residual current device (RCD) a mechanical switching device designed to make, carry and break currents under normal service conditions and to cause the opening of the contacts when the residual current attains a given value under specified conditions.

Works of an electricity entity (entity works) means the electrical equipment, and electric line associated equipment, controlled or operated by the entity to generate, transform, transmit of supply electricity. Note: electrical equipment for circulating water pumps, conveyors, chemical plant,

etc on site are works of an electricity entity, whereas appliances or fixed wiring in an electricity entitys workshop or office areas is not

4.0 Maintaining Entity Works 4.1 General CS Energy entity works, electrical installations, electrical equipment and associated equipment essential to generate and supply electricity:

are to be electrically safe, and are to be operated in a way that is electrically safe.

The requirements for maintaining electrical installations as detailed in this procedure and the specific requirements as detailed in the Electrical Safety Regulation Part 7: Works of an Electricity Entity, are to be complied with. Provisions within this procedure address the following:

Electric lines and control cables, Clearance of overhead electric lines from ground, Clearance of overhead electric lines from structures, Building or adding to structure near electric line, Maintenance of works, Maintenance of integrity of insulation, and Trimming of trees near overhead electric line.

4.2 Safety and clearance requirements design/construction/maintenance work

CS Energy entity works, electrical installations, electrical equipment and associated equipment essential to generate and supply electricity are to: be designed, constructed and maintained to ensure they are electrically safe, be operated in a way that is electrically safe, meet thermal capacity to pass the electrical load for which they are designed, have the capacity to pass short circuit currents to allow protective devices to operate

correctly, have enough mechanical strength to withstand anticipated mechanical stresses

caused by environmental, construction or electrical service conditions,



restrict unauthorised access by persons to live exposed parts. CS Energy power station sites must ensure the design, construction, operation and maintenance records necessary for the electrical safety of the works are be kept in an accessible form. Electrical equipment must undergo commissioning tests to verify the equipment is suitable for service and can be operated safely when initially installed or altered. Labels are to clearly identify parts of the works whose identity or purpose is not obvious and are to be updated after any changes are made. Lines and cables are to be maintained so that clearances from the ground/roads and structures for low and high voltage cables are in accordance with the requirements of the Electrical Safety Regulations Schedule 4 and 5. 4.3 Earthing and protection Each power station site is to incorporate and maintain an earthing and protection system (to stop, as far as is practicable, a person suffering electric shock) capable of the following: -

Reliable passage of fault current and operation of circuit protection devices, Safe step, touch and transfer potentials for all electrical equipment, Appropriate coordination with the earthing and protection systems of other

entities, Protection against likely mechanical damage, inadvertent interference and

chemical deterioration, Mechanical stability and integrity of connections, Effective earthing of neutral conductors (MEN system), and Earthing of each non current carrying exposed conductive part of the

generating plant 4.4 Construction or excavation work in proximity to overhead or underground

electrical lines Where building, construction or excavation work is proposed to be done, or a change to a building or structure is to occur within the clearance requirements for overhead or underground cables (exclusion zones) a Permit to Work/Permit to Dig or Access Permit is to be obtained by the OIC for the work from CS Energy. The Permit is to outline the measures taken to protect workers and the electrical works while the activities are being performed and to ensure the requirements for exclusion zones are complied with. 4.5 Vegetation Management Vegetation management is to be taken into account for trees and shrubs that are located at CS Energy Power Station sites and within close proximity of any overhead power lines associated with adjoining switchyards. Vegetation growth and work on or near the vegetation is to be monitored so that at any time, the growth of the trees or shrubs and/or a part of any persons body or anything they are holding or that is attached to their body, or anything they are using - in association with the vegetation - does not come within the exclusion zones.

A person is not to undertake tree trimming or vegetation management where any part of the tree or vegetation to be treated or cut or otherwise worked with is within the exclusion zones.

A person should not undertake tree trimming or vegetation management where any part of the tree or vegetation could fall or otherwise be carried within the safe approach distances.

A formal documented inspection is to be undertaken of all site vegetation every six months to check if growth is within the exclusion zones.



A Permit to Work is required for any work on or near vegetation that may be within the exclusion zones.

Hazard Identification: before carrying out any vegetation management work, a JSEA is required to identify potential hazards and suitable control measures. Hazards to be considered include, but are not limited to, the following:

Proximity of vegetation and proposed work activity to electric lines (e.g. if the vegetation involved is located within exclusion zones).

The vegetation or part of the vegetation may fall or otherwise be carried into the area within exclusion zones.

Carrying out the task would cause a person or anything a person may be holding, or in contact with, to intrude into exclusion zones.

Wind causing intermittent encroachment of vegetation into the exclusion zone or wet weather making the situation more dangerous.

Fires and smoke associated with the vegetation may cause trips or damage to the overhead wires, towers and insulators.

Operational characteristics of equipment eg length of boom and speed of movement of an elevating work platform (EWP). Some examples of operational characteristics that may present a hazard are: knuckle boom EWPs where convenient placement of the basket can have part of the boom intruding into roadways or other hazardous areas;

Cutting equipment such as chain saws, which may "kick back", causing equipment to move inadvertently; or

Site conditions such as weather (wind), terrain, vehicular and other traffic. For example, heavy traffic on an adjacent roadway could prevent safe access to vegetation.

5.0 Maintaining Electrical Installation/Equipment Requirements 5.1 General A licensed electrical worker who performs electrical work on an electrical installation or electrical equipment is to ensure that the installation or equipment, to the extent it is affected by the electrical work, is in accordance with AS/NZS 3000 Electrical Installations. Where CS Energy, as a holder of an electrical contractor license, engages contracted electrical workers to perform such work, CS Energy must ensure the electrical installation or equipment complies with AS/NZS 3000 by:

ensuring that only licensed electrical contractors perform such work, and ensuring that test certificates are received stating that the electrical

installation or equipment satisfies AS/ZNS 3000 requirements. Persons in control of low voltage electrical installations at each Power Station are not to allow the earthing for the installations to be inconsistent with the earthing system requirements for the entity works. A modification officer or equivalent, as defined within the site Power Station specific Plant Modification Procedure is to ensure:

that a competent electrician or electrical engineer designs the new or modified electrical installation or equipment,

that the Electrical Contractor Licensee documents the inspections and tests required by this procedure, and



the resulting inspection and test documentation is filed within the relevant modification and or maintenance site file.

5.2 Electrical Contractor Licensee The Electrical Contractor Licensee is to inspect and test the electrical installation and ensure compliance to AS/NZS 3000 where modification work has been performed. The Electrical Contractor Licensee may allow another competent electrician to perform the inspection and tests, providing the Licensee coordinates such tasks and also endorses the result sheets. Note: If the work is maintenance work (i.e. removal and replacement of a motor) the maintenance electrical worker is to ensure compliance and sign the test certificate. No further signature is required by the Licensee.

The requirements to ensure for visual inspection in accordance with AS/NZS 3000, Section 6.2.2, are summarised in Attachment 1 Visual Inspection Check Sheet. The requirements for tests on the installation are to be in accordance with AS/NZS 3000, Section 6.3, and are summarised in Attachment 2 Electrical Tests Check Sheet. Test methods are further defined in AS/NZS 3017 and the sequence of electrical testing is described in the Flow Chart below. Chart 5.2 Electrical Testing Flow Chart

6.0 Specific AS/NZS 3000 Testing 6.1 Earth Resistance Test (Test 3) As AS/NZS 3000 does not specifically state a required impedance limit for earth conductors other than the main earth, the following method based on the required fault loop impedance is to be used. This method is derived from Appendix B of AS/NZS 3000. The disconnection time required for each protective device is to be determined. For 230/240 Volts, AS/NZS 3000, Section 1.7.4.3.4 requires these to be:

1. Earth Resistance Test Continuity of Main Earthing

Conductor

2. Insulation Resistance Test of Installation

3. & 4. Earth Resistance Test for Other Earthed and Equipotential

Bonded Parts

5. Consumers Mains Test Polarity

6. Sub-mains Tests Polarity 7. Final Sub-circuit Test Polarity 8. Final Sub-circuit Test

Connections

9. Fault Loop Impedance Test 10. Verification of Operation of Residual Current devices



0.4 seconds for socket outlets



6.2 Equipotential Bonding Conductor Test (Test 4) The following table below is to be used as part of equipotential bonding conductor testing.

Equipotential Bonding Conductor Test 4 Equipotential Bonding - mm2

(AS/NZS 3000 Section 5.8.3.2) Required Resistance

1 Multiply length (m) of cable by 0.0233 (/m)

1.5 Multiply length (m) of cable by 0.0149 (/m)

2.5 Multiply length (m) of cable by 0.00814 (/m)

4 other than consumer mains support

Multiply length (m) of cable by 0.00506 (/m)

Consumer mains support Refer to AS/NZS 3000 5.8.3.2 (c) and calculate required resistance from conductor tables in AS/NZS 3008

6.2 Fault Loop Impedance Test (Test 8) The maximum allowed fault loop impedance for 230/240 volts (400/415 volts 3 phase) is defined in Table B 4.1 of AS/NZS 3000 and listed in the following table. Other voltage levels require design calculations in accordance with AS/NZS 3000, Section 5. The following table below is to be used as part of fault loop impedance testing.

Maximum Values of Fault Loop Impedance (Zs)

Protective Device Rating

Circuit Breakers Fuses Type B Type C Type D

Disconnection Times

0.4 s 0.4 s 5 s A Maximum Fault Loop Impedance Zs

6 9.58 5.11 3.07 11.5 15.33

10 5.75 3.07 1.84 6.39 9.20

16 3.59 1.92 1.15 3.07 5.00

20 2.88 1.53 0.92 2.09 3.59

25 2.3 1.23 0.74 1.64 2.71

32 1.8 0.96 0.58 1.28 2.19

40 1.44 0.77 0.46 0.96 1.64

50 1.15 0.61 0.37 0.72 1.28

63 0.91 0.49 0.29 0.55 0.94

80 0.72 0.38 0.23 0.38 0.68

100 0.58 0.31 0.18 0.27 0.48

125 0.46 0.25 0.15 0.21 0.43

160 0.36 0.19 0.12 0.16 0.30

200 0.29 0.15 0.09 0.13 0.23



6.3 Inspection and maintenance of integrity of insulation The integrity of the insulation of an electric line forming part of the power station site electrical works (entity works) is to be inspected and maintained at periodic intervals. The person performing the inspections and maintenance work is to check the integrity of the electrical insulation where the line:

forms parts of the entity works,

is adjacent to a roof or structure, and

is in a position where it is likely that a person could come into contact with the line (eg. cooling tower fan motor cables, EFP motor cables, ID fan motor cables, persons painting near cables, sections of conduit from underground cables to electric motors, sections of cable trays that are accessible).

Maintenance practices are to include visual inspections and megger testing of cables at regular intervals such as during an overhaul. A compliant testing and maintenance routine/plan is to be implemented in SAP to reflect this requirement.

7.0 Recording Inspections and Testing 7.1 General The person performing the tests is to use the check sheets provided in Attachments 1 & 2. Site-specific check sheets may also be utilised (e.g. for each motor, incomer, feeder etc. for the 440V system). Once the inspection and testing tasks are completed, the Electrical Contractor Licensee is to sign the Certificate of Testing and Compliance a certificate is provided in Attachment 3. Power Station specific cable schedule records are to be updated as appropriate and circuit schedules on switchboards are to be updated in a legible way. Consideration is to be given to re-typing circuit schedules on switchboards where a number of modifications have been made. The certificate of testing and compliance is to be filed in the site CS Energy file for that particular modification and/or in the site maintenance files. Note: a second copy of the certificate may be stored in the sites central register for audit purposes.

8.0 Legislative and CS Energy References QLD Electrical Safety Act 2002 QLD Electrical Safety Regulation 2002 AS/NZS 3000 Electrical Installations AS/NZS 3008 Electrical Installations: Selection of Cables AS/NZS 3017 Electrical Installations: Testing Guidelines AS/NZS 3760 In-service Safety Inspection and Testing of Electrical Equipment CS Energy Electrical Safety Procedure CS Energy Maintenance of Electrical Safety Equipment and Clothing (PPE) Procedure CS Energy Site-specific Plant Modifications Procedure



9.0 Associated Documentation To provide the reader with additional information as referred to within this procedure, the following documentation has been attached. This includes: Attachment 1 Visual Inspection Check Sheet,

Attachment 2 Electrical Tests Check Sheet, and

Attachment 3 Certificate of Testing and Compliance.



Attachment 1 Visual Inspection Check Sheets Description of Installation:

Modification Number:

Inspection Item (AS/NZS 3000-2000) AS/NZS 3000-2000 Clause Reference Complies

(Inspectors Initials)

Not Applicable (Inspectors Initials)

General

i) Protection against direct contact with live parts eg- insulation and enclosure

1.7.2 & 1.7.3

ii) Protection against indirect contact with exposed conductive parts eg- double insulation or isolating transformers

1.7.2, 1.7.4 & 2.3

iii) Protection against hazardous parts eg- enclosure, guarding or screening of flammable materials, hot surfaces and parts that may cause physical injury

1.7.11, 4.2 & 4.3

iv) Protection against spread of fire eg- penetration of fire barriers

3.9.10

v) General condition of the electrical equipment eg- signs of damage that could impair safe operation, disconnection of unused electrical equipment

Page 1 of 6

Inspector (where not the licensee): Name: Signature:

Certificate of Competency Number: Date:

Electrical Contractor Licensee: Name: Signature:

Contractors Licence Number: Date:



Description of Installation:





Consumers Mains

i) Current carrying capacity 3.4 AS3008.1

ii) Voltage drop 3.6, 1.8.4 AS3008.1

iii) Underground installation conditions e.g. enclosure, depth of burial, mechanical protection

3.11 3.7 2.9, 5.5.4

iv) Aerial installation conditions 3.12, 3.8.4 5.5.4

v) Connection of wiring 3.7

vi) Protection against external influences

1.9.3, 1.8.6

Page 2 of 6












Switchboards

i) Location e.g. access and egress 2.9.8

ii) Protective devices e.g. overload and residual current rating, fault current rating

2.3, 2.4 2.6.2, 2.7.2 4.3.9.2.2 7.10.4.4

iii) Isolating devices, e.g. main switches

2.8

iv) Connecting devices e.g. neutral bars, earth bars and active links

2.9 5.6

v) Connection and fixing of wiring and switchgear

2.9 3.7

vi) Identification and labelling of electrical equipment

2.9.4

vii) Protection against external influences

1.9.3, 1.8.6

Page 3 of 6












Wiring Systems

i) Conductor size e.g. current carrying capacity and voltage drop

1.8.4 3.4, 3.5 AS3008.1

ii) Identification of cable cores 3.8

iii) Adequate support and fixing 3.9

iv) Connections and enclosures 3.7, 3.10

v) Particular installation conditions e.g. underground, aerial, emergency systems

3.11, 3.12 3.13, 3.14 3.15, 3.16

vi) Segregation from other services and electrical installations

3.9.9.4 7.10.8 1.7.2 7.7.4 1.10.4

vii) Protection against external influences e.g. enclosure

1.9.3, 1.8.6

Page 4 of 6









Inspection Item (AS/NZS 3000-2000)

AS/NZS 3000-2000 Clause Reference Complies


Not Applicable (Inspectors

Initials)

Electrical Equipment

i) Isolation and switching devices for protection against injury by Mechanical Movement

4.2 2.8.5

ii) Isolation and switching devices for protection against thermal effects

2.8 4.3

iii) Switching devices for particular electrical equipment, socket outlets, cooking appliances

4.9.4 4.3.11

iv) Particular installation conditions e.g. locations affected by water, explosive atmospheres, extra low voltage, high voltage

7.1 Baths Showers and Sinks

7.2, 7.3 Pools and Saunas

7.4 Refrigeration Rooms

7.5 Where Hosing Occurs

7.6 Fountains

7.7, 3.9.9.3, 4.9.1.3.1 ELV

7.8 High Voltage

7.9, 4.4 Hazardous Areas

7.10 Emergency Systems

7.11 Specific Installations

v) Compliance with required Standard (for specific device)

Device: Standard:

vi) Connection, support, fixing 4.11

vii) Protection against external influences

1.9.3, 1.8.6

Page 5 of 6












Earthing

i) MEN connection 5.6.5, 5.3

ii) Earth electrode 5.6.2

iii) Earthing conductors e.g. size, identification

5.6.7 5.6.3

iv) Equipotential bonding conductors, e.g. size, identification

5.8

v) Connections, joints and terminations

3.7 5.6

vi) Protection against external influences

1.9.3

vii) Connection to earthing arrangements for other systems

5.10 7.8.10

viii) Creation of earthed situation that may require earthing of additional electrical equipment

5.7 5.4

Circuit and Cable Schedules Check cable and circuit schedules have been updated legibly

Page 6 of 6







Attachment 2 Electrical Tests Check Sheet Description of Installation:


Test Item (AS/NZS 3000-2000) (For test methods refer to AS 3017)

AS/NZS 3000-2000 Pass Criteria

Tested Value

Test OK (Inspectors

Initials)

Mandatory Tests 1) Main Earthing Conductor Continuity 1.11.2, 5.6.3, 6.3.3.2

No more than 0.5 M

2) Insulation Resistance 1.11.2, 6.3.3.3 (Where multiple items test, attached a separate list initialled)

Not less than 1 M Can be as low as 0.01 M for sheathed heating elements in appliances Can be reduced of the particular appliance standard allows a lower value

3) Protective Earth Conductors 1.11.2, 6.3.3.2, Appendix B4 (Where multiple items test, attached a separate list initialled)

See Section 5.1 of this procedure Clearance time: Circle CB Type

B C D Fuse CB/Fuse Rating: Size of Active: Size of Earth: Required value of resistance from Table within S 5.1:

4) Equipotential Bonding Conductors 1.11.2, 6.3.3.2, 5.8.3

See Section 5.2 of this procedure Length of cable (m): Size of cable: Required Resistance:

5) Polarity Check of Consumer Mains 1.11.2.4, 6.3.3.4, AS 3017

No transposition of conductors No switches or protective devices that operate independently in the neutral or earthing conductor

N/A

6) Polarity Check of Submains 1.11.2.4, 6.3.3.4, AS 3017 (Where multiple items test, attached a separate list initialled)


N/A

7) Polarity Check of Final Subcircuit 1.11.2.4, 6.3.3.4, AS 3017 (Where multiple items test, attached a separate list initialled)


N/A

8) Correct Circuit Connections of Final Sub-circuit 1.11.2.5, 6.3.3.5, AS 3017 (Where multiple items test, attached a separate list initialled)

No short circuit between active, neutral and earth (other than MEN or ESR) No transportation that would energise exposed conductive parts No interconnection of conductors between different circuits

N/A

Page 1 of 2



Test Item (AS/NZS 3000-2000) (For test methods refer to AS 3017)

AS/NZS 3000-2000 Pass Criteria

Tested Value

Test OK (Inspectors

Initials)

Optional Tests Performed Once Installation is Made Live

9) Fault Loop Impedance Measured at farthest practicable point in circuit from supply 1.11.2, 6.3.4.2, Appendix B (Note Test method for this test is not covered by AS 3017 1996, later editions may however cover it. (Where multiple items test, attached a separate list initialled)

See Section 5.3 of this Procedure) Clearance Time: Circle CB Type:

B C D Fuse CB/Fuse rating: Required value of Zs from Table: Test passes of RCD trips while fault loop impedance tester is measuring impedance.

Value: Or circle: RCD Tripped

10) Operation of Residual Current Devices 6.3.4.3, AS 3760 See also CS Energys Maintenance of Electrical Safety Equipment & Clothing (PPE) Procedure

RCD Operates correctly when tested with (circle one below): Integral Test Device or Special Test Equipment

N/A Unless special test equipment

used




Contractors Licence Number: Date: Page 2 of 2



Attachment 3 Electrical Certificate of Testing and Compliance "B/D/12/7183" - Form - S1975 - Electrical Certificate of Testing and Compliance (COT)

CS ENERGY PROCEDURE FORMAINTENANCE AND TESTING OF ENTITY WORKS, ELECTRICAL INSTALLATIONS AND ELECTRICAL EQUIPMENTCS-OHS-32Contents

CompliesCompliesCompliesCompliesCompliesCompliesCircuit and Cable Schedules

Tested ValueTested Value

Inspection and testing plan of electrical equipment procedure May 2013.pdf

Documents

Transcript of Inspection and testing plan of electrical equipment procedure May 2013.pdf