ioc-hse-e-man electrical safety program rev 14

Iron Ore Company of Canada Health, Safety & Environment

IOC-HSE-E-PRO Electrical Safety Program

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Table of Contents

1 PURPOSE & SCOPE....................................................................................................................... - 3 -

2 DEFINITIONS.................................................................................................................................. - 3 -

3 RESPONSIBILITY.......................................................................................................................... - 7 -

4 TRAINING........................................................................................................................................ - 7 -

4.1 UNQUALIFIED PERSONS........................................................................................................ - 7 - 4.2 QUALIFIED PERSONS.............................................................................................................. - 8 -

5 ELECTRICALLY SAFE WORK CONDITIONS........................................................................ - 9 -

6 WORK INVOLVING ELECTRICAL HAZARDS .................................................................... - 10 -

6.1 ELECTRICAL ROOM ACCESS.............................................................................................. - 10 - 6.2 ENERGIZED ELECTRICAL WORK PERMIT....................................................................... - 10 - 6.3 SHOCK HAZARD ANALYSIS ............................................................................................... - 11 - 6.4 ARC FLASH HAZARD ANALYSIS ....................................................................................... - 12 -

6.4.1 Arc Flash Hazard Label Present ......................................................................................................................- 13 - 6.4.2 Arc Flash Hazard Label Absent .......................................................................................................................- 16 -

6.5 WORK WITHIN THE LIMITED APPROACH BOUNDARY OF UNINSULATED OVERHEAD LINES ........................................................................................................................... - 17 - 6.6 PERSONAL PROTECTIVE EQUIPMENT (PPE)................................................................... - 19 -

6.6.1 Rubber Insulating Gloves and Mitts .................................................................................................................- 19 - 6.7 OTHER PROTECTIVE EQUIPMENT..................................................................................... - 19 -

7 MAINTENANCE ........................................................................................................................... - 20 -

7.1 GENERAL MAINTENANCE .................................................................................................. - 20 - 7.2 INSPECTIONS.......................................................................................................................... - 20 - 7.3 DECOMMISSIONING OF OBSOLETE, UNFIT OR UNSAFE ELECTRICAL EQUIPMENT .. - 21 - 7.4 TESTING FOR GROUNDING AND BONDING.................................................................... - 22 -

8 ELECTRICAL PERSONNEL CERTIFICATION PROCESS ................................................. - 24 -

8.1 QUALIFIED ELECTRICAL PERSONNEL RECERTIFICATION CHECKLIST ................. - 25 - 8.2 COMPETENCY AREA CHECKLIST ..................................................................................... - 25 -

9 APPENDICES ................................................................................................................................ - 26 -

9.1 ARC FLASH RATED PPE SELECTION FLOW CHART...................................................... - 26 - 9.2 RUBBER INSULATING GLOVES AND MITTS................................................................... - 27 - 9.3 ENERGIZED ELECTRICAL WORK PERMIT....................................................................... - 27 - 9.4 ELECTRICAL ROOM AND SUBSTATION ACCESS AUTHORIZATION FORM ............ - 27 - 9.5 QUALIFIED ELECTRICAL PERSONNEL RECERTIFICATION CHECKLIST ................. - 27 - 9.6 COMPETENCY AREA CHECKLIST ..................................................................................... - 27 -

9.6.1 Mine Mobile Area.............................................................................................................................................- 27 - 9.6.2 Ore Delivery Area ............................................................................................................................................- 27 - 9.6.3 Mine Field Area ...............................................................................................................................................- 27 -



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9.6.4 Processing Operations Area.............................................................................................................................- 27 - 9.6.5 Power Distribution Area ..................................................................................................................................- 27 -

9.7 OTHER FORMS/CHECKLISTS/PERMITS ............................................................................ - 28 - 9.8 OTHER PROCEDURES/WORK PRACTICES/STANDARDS .............................................. - 28 - 9.9 ACCESS TO WORK PRACTICE & PROCEDURES ............................................................. - 28 -



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1 PURPOSE & SCOPE

The purpose of this document is to provide a simplified summary of the IOC Electrical Safety Program. The policies and procedures outlined in this Electrical document are intended to mitigate the risks associated with electrical hazards at IOC. This program applies to all employees and contractors performing electrical work above 50 Volts at all IOC facilities, at all times.

This document is not intended to replace the work practices and procedures but to be used in conjunction with references found in the Mine-to-Port website. If there is a discrepancy between this document and the work practice/procedures, the later will take precedence.

This program has been developed from:

• Rio Tinto C2 Electrical Safety Standard & Procedures

• Rio Tinto C1 Isolation Standard & Procedures

• Rio Tinto C4 Working at Heights Standard & Procedures

• Rio Tinto HSEQ Element 11 Management of Change

• Rio Tinto HSEQ Element 7 Supplier and Contractor Management

• CSA Z462-08 Canadian Standards Association Workplace Electrical Safety

• NFPA 70E National Fire Protection Association Standard for Electrical Safety in the Workplace

This program is intended to be used in conjunction with:

• CSA C22.1-12 Canadian Electrical Code Part I

• CSA C22.2 Canadian Electrical Code Part II

• CSA C22.3 Canadian Electrical Code Part III

• CSA M421 Canadian Standards Association Use of Electricity in Mines

• Newfoundland & Labrador Occupational Health & Safety Regulations

2 DEFINITIONS

Ampacity – the current, in amperes, that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.

Arc Flash Hazard – A dangerous condition associated with the possible release of energy caused by an electric arc. An arc flash hazard can exist when energized electrical conductors or circuit parts are exposed or are within equipment in a guarded or enclosed condition, if a person is interacting with the equipment in a manner that could cause an electric arc. Under normal operating conditions, enclosed energized equipment that has been properly installed and maintained is not likely to pose an arc flash hazard.



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Arc Flash Hazard Analysis – A study investigating a worker’s potential exposure to arc flash energy, conducted for the purpose of injury prevention and the determination of safe work practices, arc flash protection boundary, an the appropriate levels of personal protective equipment.

Arc Flash Suit – A complete flame-resistant clothing and equipment system that covers the entire body except for the hands and feet. It includes pants, a jacket, and a bee-keeper-type hood fitted with a face shield.

Arc Rating – The value attributed to materials that describe their performance on exposure to an electrical arc discharge. The arc rating is expressed in cal/cm2 and is derived from the determined value of the arc thermal performance value (ATPV) or energy of breakopen threshold (EBT) (if a material system exhibits a breakopen response below the ATPV).

Back Feed – Where equipment may become energized by a power source (e.g. emergency generator, UPS etc.) on the secondary side of the electrical supply.

Barricade – A physical obstruction (e.g. tape, cones, metal railings etc.) intended to provide a warning about and to limit access to a hazardous area.

Barrier – A physical obstruction that is intended to prevent contact with equipment or energized electrical conductors or circuit parts or to prevent unauthorized access to a hazardous area.

Bonding – A low-impedance path that is obtained by permanently joining all non current carrying metal parts to ensure electrical continuity and has the capacity to conduct safely any current likely to be imposed on it.

Boundary, Arc Flash Protection – When an arc flash hazard exists, an approach limit at a distance from a prospective arc source within which a person could receive a second degree burn if an electrical arc flash were to occur.

Boundary, Limited Approach – An approach limit at a distance from an exposed energized electrical conductor or circuit part within which a shock hazard exists.

Boundary, Prohibited Approach – An approach limit at a distance from an exposed energized electrical conductor or circuit part within which work is considered the same as making contact with the electrical conductor or circuit part.

Boundary, Restricted Approach – An approach limit at a distance from an exposed energized electrical conductor or circuit part within which there is an increased risk of shock, due to electrical arc over combined with inadvertent movement, for personnel working in close proximity to the electrical conductor or circuit part.

Conductive – Suitable for carrying electric current.

Conductor – A wire, cable, or other form of metal installed for the purpose of conveying electric current from one piece of electrical equipment to another or ground.

Consistently – Refers to employees working in the electrical trade. It does not consider vacation, leave of absence etc.

Current Limiting Overcurrent Protective Devices – A device that, when interrupting current in its current-limiting range, reduces the current flowing in the faulted circuit to a magnitude substantially less than that which would be obtainable in the same circuit if the device were replaced with a solid conductor having comparable impedance.



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De-energized – Free from an electrical connection to a source of potential difference and from electrical charge, i.e., not having a potential different from that of the earth.

Device – A unit of an electrical system that carries or controls electric energy as its principal function.

Electrical Equipment – Any apparatus, appliance, device, instrument, fitting, fixture, machinery, material or thing used in or for, or capable of being used in or for, the generation , transformation, transmission, distribution, supply or utilization of electric power or energy, including e.g., any assemblage or combination of materials or things that is used, or capable of being used or adapted, to serve or perform any particular purpose or function when connected to an electrical installation, even if part or all of such materials or things are mechanical, metallic, or no-electric in origin.

Electrical Hazard – A dangerous condition such that contact or equipment failure can result in electric shock, arc flash burn, thermal burn, or blast.

Electrical Personnel – Persons who are electrically knowledgeable, including tradespersons, electricians, technicians, technologists, engineers, supervisors, planners, superintendents, advisors, contractors, consultants and others.

Electrical Room – A room requiring authorized access, containing electrical equipment such as MCC’s, enclosures and PLC’s and where the threat of exposure to electrical hazards has increased.

Electrically Safe Work Condition – A state in which an electrical conductor or circuit part has been disconnected from energized parts, locked out in accordance with Rio Tinto’s C1 Isolation Standard, tested to ensure the absence of voltage, and grounded (if grounding is determined to be necessary).

Electrical Safety – Recognizing hazards associated with the use of electrical energy and taking precautions so that such hazards do not cause injury or death.

Enclosure – A case or housing of apparatus, or a fence or walls surrounding an installation, intended to prevent persons from accidentally coming into contact with energized electrical conductors or circuit parts, or to protect electrical equipment from physical damage.

Energized – Electrically connected to or having a source of voltage.

Exposed – Capable of being inadvertently touched or approached nearer than a safe distance by a person. This term is applied to electrical conductors or circuit parts that are not suitably guarded, isolated, or insulated.

Grounded – Connected effectively with the general mass of the earth through a grounding path of sufficiently low impedance and having an Ampacity sufficient at all times, under the most severe conditions liable to arise in practice, to prevent any current in the grounding conductor from causing a harmful voltage to exist between the grounding conductors and neighbouring exposed conducting surfaces that are in good contact with the earth or surfaces of the earth itself.

Ground Fault – An unintentional electrically conducting connection between an ungrounded conductor of an electrical circuit and normally non current carrying conductors, metallic enclosures, metallic raceways, metallic equipment or earth.

Ground Fault Circuit Interrupter (GFCI) – A device whose function is to interrupt, within a predetermined time, the electrical circuit to a load when a current to ground exceeds a



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predetermined value that is less than that required to operate the Overcurrent protective device of the supply circuit.

Incident Energy – The amount of energy, impressed on a surface a certain distance from the source, generated during an electrical arc event. It is usually measured in cal/cm2.

Interrupting Rating – The highest current at rated voltage that a device is intended to interrupt under standard test conditions.

Isolated – Securely physically separated or blocked with non-conductive material sufficient to ensure that equipment cannot be energized by identified power sources.

Lockout – Placement of a lock on an energy-isolating device in accordance with Rio Tinto’s C1 Isolation Standard, thereby indicating that the energy-isolating device is not to be operated until removal of the lock or in accordance with Rio Tinto’s C1 Isolation Standard.

Motor Control Centre (MCC) – An assembly of one or more enclosed sections that have a common power bus and principally contain motor control units.

Motor Control Centre (MCC) Room – A room requiring authorized access, containing electrical equipment such as MCC’s, enclosures, PLC’s etc.

Overcurrent – A current in excess of the rated current of equipment or Ampacity of a conductor. It can result from an overload, short circuit or ground fault.

Overload – Operation of equipment in excess of normal, full-load rating, or of a conductor in excess of rated Ampacity that, when it persists for a sufficient length of time, will cause damage or dangerous overheating.

Qualified Person (Worker) – one who has skills and knowledge related to the construction and operation of electrical equipment and installations and has received safety training to recognise and avoid the hazards involved.

Risk Assessment – A comprehensive evaluation of the probability and degree of possible injury or damage to health in a hazardous situation, undertaken to select appropriate safeguards.

Safeguarding – The consistent administrative enforcement of safe work practices. They include training, design, safety equipment, personal protective equipment, safe work instructions, Take 5, job hazard analysis, safe work procedures etc.

Shock Hazard – A dangerous condition associated with the possible release of energy caused by contact with or approach to energized electrical or circuit parts.

Short Circuit Current Rating – The prospective symmetrical fault current at a nominal voltage to which an apparatus or system is able to be connected without sustaining damage exceeding defined acceptance criteria.

Single Line Diagram (SLD) – A diagram that shows, by means of single lines and graphic symbols, the course of an electric circuit or system of circuits and the component devices or parts used in the circuit or system.

Step Potential – A ground potential gradient difference that can cause current flow from foot to foot through the body.

Step Voltage – The potential difference between two points on the earth’s surface separated by a distance of one pace assumed to be 1m in the direction of maximum voltage gradient.



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Touch Potential – A ground potential gradient difference that can cause current to flow from hand to hand, hand to foot or another path (other than foot to foot) through the body.

Touch Voltage – The potential difference between a grounded metal structure and a point on the earth’s surface separated by a distance equal to normal maximum horizontal reach.

Unqualified Person – A person who is not a qualified person.

Voltage (Nominal) – A nominal value assigned to a circuit or system for the purpose of conveniently designating its voltage class (e.g, 120V, 208V, 240V, 600V, 4160V etc.)

Voltage, Low – Any voltage above 50V and below 750V.

Voltage, High – Any voltage above 750V.

Working on Energized Electrical Conductors or Circuit Parts – Coming in contact with energized electrical conductors or circuit parts with the hands, feet or other body parts, or with tools, probes, or other test equipment, regardless of the personal protective equipment a person is wearing. There are two types:

a) Diagnostic (Testing) – Taking readings or measurements of electrical equipment with approved test equipment that does not require making a physical change to equipment.

b) Repair – Physical alteration of electrical equipment, e.g., making or tightening connections or removing or replacing components.

3 RESPONSIBILITY

HS General Manager – Maintains the Electrical Safety Program.

C2 Standard Team (Standard Champion & Area Champions) – Provides technical support for content of Electrical Safety Program and audits compliance.

Management & Supervision – Ensures compliance to the Electrical Safety Program. Determine if employees are qualified and competent for electrical work.

Employee – Implements the safe work practices outlined in the Electrical Safety Program.

4 TRAINING

4.1 UNQUALIFIED PERSONS

All unqualified employees and contractors working at IOC are required to complete the Electrical Hazards Awareness Training (EHAT) for the Unqualified Person on an annual basis. This training is offered as part of the IOC induction training package for new employees and contractors. It is also provided annually through safety talks.



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4.2 QUALIFIED PERSONS

All qualified electrical personnel working at IOC are required to complete the following formal training:

• Electrical Hazards Awareness Training (EHAT) for the Qualified Person every 2 years. This training is also provided annually through safety talks.

• Cardiopulmonary Resuscitation (CPR) on an annual basis. This training is provided by a third party.

• Emergency First Aid every three years. This training is provided by a third party.

All qualified electrical personnel working at IOC shall be informally trained (on-the-job) in and knowledgeable about the construction and operation of equipment or a specific work method and trained to recognize and avoid the electrical hazards that might be present with respect to that equipment or work method.

Such persons shall be familiar with the proper use of the special precautionary techniques and personal protective equipment, including arc flash, insulating and shielding materials, and insulated tools and test equipment.

Such persons permitted to work within the limited approach boundary of exposed energized electrical conductors and circuit parts shall be trained in the following:

• The skills and techniques necessary to distinguish exposed energized parts from other parts of electrical equipment.

• The skills and techniques necessary to determine the nominal voltage of exposed energized conductors or circuit parts.

• The approach distances specified in Table 1 and the corresponding voltages to which the qualified person will be exposed.

• The decision-making process necessary to determine the degree and extent of the electrical hazards and the personal protective equipment and job planning necessary to perform the task safely.

• The decision-making process necessary to determine if an Energized Electrical Work Permit, as described in section 6.2 is required to perform the task safely.

IOC permanent employee, who is undergoing informal (on-the-job) training and who, in the course of such training, has demonstrated an ability to perform duties safely at his or her level of training and who is under the supervision of a qualified person shall be considered to be a qualified person for those duties.

Workers shall be trained to select an appropriate voltage detector and shall demonstrate how to use a device to verify the absence of voltage. Test instruments/equipment and their respective equipment shall be rated for the voltages on which they will be used. All instruments and/or equipment shall be approved for use by the C2 Electrical Safety Standard Team. Low voltage Digital Multimeters shall be Cat IV for measuring power system voltage above 240V.

Low voltage non-contact voltage detectors shall only be permitted to prove the presence of rated voltage; not to prove the absence of rated voltage.



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Nominal Voltage (Phase to Phase)

Limited Approach Boundary

(Unqualified)

Restricted Approach Boundary

(Voltage Rated PPE)

Prohibited Approach Boundary

< 50V N/A N/A N/A 51V – 750V 3.05m (10ft 0 in) 0.30m (1ft 0 in) 0.03 (0ft 1 in) 751V – 15kV 3.05m (10ft 0 in) 0.66m (2ft 2 in) 0.18m (0ft 7 in)

15.1kV – 36kV 3.05m (10ft 0 in) 0.79m (2ft 7 in) 0.25m (0ft 10 in) 36.1kV – 46kV 3.05m (10ft 0 in) 0.84m (2ft 9 in) 0.43m (1ft 5 in)

Table 1. Approach Boundaries to Exposed Energized Electrical Conductors or Circuit Parts for Shock Protection (Adapted from Table 1 CSA Z462-08)

5 ELECTRICALLY SAFE WORK CONDITIONS

Energized electrical conductors and circuit parts to which a worker might be exposed shall be put into an electrically safe work condition before an employee works within the limited approach boundary of those conductors or parts, unless work on energized components can be justified in accordance with section 6 of this Electrical Safety Program.

Only qualified and competent electrical personnel may work on electrical conductors or circuit parts that have not been put into an electrically safe work condition.

An electrically safe work condition is typically achieved through the following:

• De-energize all possible sources of electrical supply to the equipment.

• Use an adequately rated voltage detector to test for absence of voltage. Test each conductor phase to phase and phase to ground. Before and after each test, determine that the voltage detector is operating properly.

• Lockout all possible sources of electrical supply to the equipment in accordance with the C1 Isolation Standard; in particular C1 Isolation Procedure PRO-SM-0500.

• Apply temporary protective grounds where the possibility of induced voltages exists, or it can be reasonably anticipated that the de-energized conductors or circuit parts could contact other exposed energized conductors or circuit parts. Temporary protective grounds shall be capable of conducting the maximum fault current that could flow at the point of grounding for the time necessary to clear the fault. Temporary grounds shall be inspected prior to use and only applied after absence of voltage has been proven.

The application of temporary protective grounds is not considered live work on exposed energized electrical conductors, and as such does not require an Energized Electrical Work Permit, if the other three Electrically Safe Work Conditions have been satisfied.



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6 WORK INVOLVING ELECTRICAL HAZARDS

6.1 ELECTRICAL ROOM ACCESS

Unauthorized access to Electrical Rooms and Substations is prohibited at IOC. The qualifications required to become authorized shall be approved by the site C2 Electrical Safety Standard Team and are listed on the “Electrical Room and Substation Access Authorization Form” found in Appendix 9.4.

Employees can be given either “Full Access” or “Restricted Access” to MCC rooms. Employee’s with “Restricted Access” can only enter electrical rooms while accompanied by “Authorized - Full Access” personnel. “Full Access” authorization can only be granted by the Area Superintendent, Chief Engineer or designate. “Restricted Access” can be authorized by an IOC area leader, Contractor Management Representative or Contractor Management Designate.

Electrical Rooms shall have their doors closed, locked and identified by adequate signage. Equipment contained inside Electrical Rooms shall have Arc Flash Hazard labels as outlined in section 6.4.

6.2 ENERGIZED ELECTRICAL WORK PERMIT

If energized electrical conductors or circuit parts are not placed in an electrically safe work condition, as outlined in section 5, other safety related work practices shall be used to protect workers who might be exposed to the electrical hazards involved. These work practices shall protect against arc flash as well as electric shock.

Work on energized electrical conductors or circuit parts that are not placed in an electrically safe work condition, shall be considered energized electrical work and performed only in accordance with an Energized Electrical Work Permit. IOC’s intention is to not perform work requiring an Energized Electrical Work Permit.

Energized work may be performed when de-energizing introduces additional or increased hazards.

Unqualified persons shall not enter spaces in which energized conductors or circuit parts are not suitably guarded, unless the energized conductors or circuit parts are in an electrically safe work condition.

Workers shall not reach blindly into electrical equipment or into areas that might contain exposed energized electrical conductors or circuit parts where an electrical hazard exists.

Workers shall not enter spaces containing electrical hazards unless illumination is provided that enables the work to be performed safely.

The Energized Electrical Work Permit shall be prepared in advance and in conjunction with other qualified personnel (Area Supervisor, Area Planner, Electrical Engineer, etc.). The permit requires signatures from the Qualified Worker, Area Supervisor, Area Superintendent, Area Manager and Area General Manager. The permit shall be used in conjunction with a Job Hazard Analysis and/or Risk Assessment and Take 5.

Work performed by qualified persons within the limited approach boundary of exposed energized electrical conductors or circuit parts related to tasks such as testing, troubleshooting, and voltage measuring may be performed without an Energized Electrical Work Permit, provided that appropriate safe work practices and personal protective equipment are used. If crossing the limited



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approach boundary is for visual inspection only, and the restricted approach boundary will not be crossed, an Energized Electrical Work Permit is not required.

6.3 SHOCK HAZARD ANALYSIS

If energized conductors or circuit parts to which an employee may be exposed are not placed in an electrically safe work condition, a shock hazard analysis shall be performed to determine what safety related work practices are required to protect the employee. The shock hazard analysis shall be done as part of the job hazard analysis, risk assessment or briefing process.

A shock hazard analysis shall determine the voltage to which personnel will be exposed, boundary requirements, and the safety related work practices and personal protective equipment necessary in order to eliminate the possibility of electric shock to personnel.

The shock protection boundaries identified as limited, restricted, and prohibited approach boundaries are applicable to the situation in which approaching personnel are exposed to energized conductors or circuit parts. See Table 1 for the distances associated with various system voltages.

Limited Approach Boundary – An approach limit at a distance from an exposed energized electrical conductor or circuit part within which a shock hazard exists. This is the boundary for unqualified personnel.

Restricted Approach Boundary – An approach limit at a distance from an exposed energized electrical conductor or circuit part within which there is an increased risk of shock, due to electrical arc over combined with inadvertent movement, for personnel working in close proximity to the electrical conductor or circuit part. This is the boundary that requires voltage rated PPE.

Prohibited Approach Boundary – An approach limit at a distance from an exposed energized electrical conductor or circuit part within which work is considered the same as making contact with the electrical conductor or circuit part.

This is the boundary that is to be entered for testing, troubleshooting or live work purposes.

No person shall approach or take any conductive object closer to exposed energized conductors or circuit parts than the restricted approach boundary set forth in Table 1, unless:

• The person is insulated or guarded from the energized conductors or circuit parts, and no uninsulated part of the person's body crosses the prohibited approach boundary set forth in Table 1, or

• The energized conductors or circuit part is insulated from the person and from

any other conductive object at a different potential.

Unqualified persons working at or close to the limited approach boundary shall be advised of the electrical hazard and warned to stay outside of the limited approach boundary. Barriers shall be erected to ensure the safety of unqualified persons.

Where there is a need for an unqualified person(s) to cross the limited approach boundary; a qualified person shall advise him or her of the possible hazards and continuously escort the unqualified person(s) while inside the limited approach boundary. Under no circumstance shall the escorted unqualified person(s) be permitted to cross the restricted approach boundary.



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The manual handling of live, insulated cables, rated at 751V and above is prohibited and shall require an Energized Electrical Work Permit.

6.4 ARC FLASH HAZARD ANALYSIS

IOC has a large amount of electrical equipment distributed in all areas of operation. This equipment can range in voltage from 46 kV, 13.8 kV, 4.16 kV, 600V and 208/120V. An Arc Flash incident energy analysis has been performed, and Arc Flash hazard labels have been applied to electrical equipment across IOC. However, some electrical equipment may have been missed. In addition, some Arc Flash hazard labels may become damaged or fall off.

Identification of an Arc Flash hazard label should be noted as part of a Take 5 or detailed risk assessment/JHA. Any IOC or contracted personnel who are required to work within an Arc Flash protection boundary must adhere to the Arc Rated PPE requirements as defined by the Arc Flash hazard label. In the absence of an Arc Flash hazard label, all personnel must comply with the Arc Rated PPE Matrix, as outlined below (Section 6.4.2).

Any IOC or contracted personnel who are required to work within an Arc Flash protection boundary must have the required Arc Rated PPE and Arc Flash hazard training, gained through the annual Electrical Hazards Awareness training.

Any electrical personnel assigned to work on equipment not identified by an Arc Flash hazard label, must inform their supervisor that the appropriate label is missing. The supervisor should then notify the C2 Electrical Safety Standard team member in their area.

The purpose of IOC’s Arc Flash Hazard Policy is as follows:

• To ensure that all personnel, IOC or contracted, who are required to work within an Arc Flash protection boundary at IOC, understand Arc Flash hazards and how to mitigate these hazards through the use of the appropriate Arc Rated PPE.

• To ensure that in the absence of an Arc Flash hazard label, all personnel, IOC or

contracted, who are required to work within an Arc Flash protection boundary at IOC, are protected from Arc Flash injuries, by complying with IOC site specific requirements outlined in the Arc Rated PPE Matrix.

• To ensure that Arc Flash hazard label deficiencies are brought to the attention of

the C2 Electrical Safety Standard team.

An Arc Flash is basically a short circuit through the air. In an Arc Flash incident, an enormous amount of concentrated radiant energy explodes outward from electrical equipment. This energy is measured in calories per centimetre squared (cal/cm2). An Arc Flash can occur in any electrical equipment, regardless of voltage, in which the energy is high enough to sustain an arc. There are three determining factors which dictate the amount of energy that is released. The first is the short circuit capacity of the electrical bus, the second is the amount of time the fault is maintained (clearing time) and the third is the distance from the fault. It is important to note that of the three factors, the only one which we may have some control over is the distance that we are from the fault. Always maintain as much distance from a potential fault as possible. Any standby or additional personnel should be outside the Arc Flash protection boundary.

Arc Rated PPE requirements can be determined by an incident energy analysis or a hazard/risk category matrix. In the presence of an Arc Flash hazard label, personnel are required to wear at least the minimum indicated Arc Rated PPE level. In the absence of an incident energy analysis or



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Arc Flash hazard label, all personnel must comply with the Arc Rated PPE Matrix, as outlined section 6.4.2.

The requirements for Arc Rated PPE shall be identified as part of a Take 5, and/or a detailed risk assessment/JHA before any work is performed. Any personnel found to be working without the required Arc Rated PPE, will be subject to disciplinary action.

6.4.1 Arc Flash Hazard Label Present

CSA Z462-08 4.3 Work Involving Electrical Hazards identifies six Arc Flash hazard/risk categories, requiring various levels of Arc Rated PPE. At IOC we have taken a simple approach by combining some of these categories, leaving three levels of Arc Rated PPE. These levels are identified by the colours white, yellow, orange and red.

6.4.1.1 White (Category 0)

Category 0 (White) Arc Rated PPE consists of untreated natural fibre undergarments, in addition to the regular PPE required at IOC (hard hat, safety boots, protective eyewear, ear protection). However, electrical personnel, who are expected to perform work in an Arc Flash protection boundary at IOC, on a routine basis, are required to wear Category 2 Arc Rated clothing. This Cat 2 Arc Rated clothing can be a combination of a Cat 2 Arc Rated long sleeved shirt and pants or Cat 2 Arc Rated coveralls.

Electrical personnel, who are not expected to perform work in an Arc Flash protection boundary at IOC, on a routine basis, are only required to wear Cat 2 Arc Rated clothing when they perform work in an Arc Flash protection boundary. This is the exception, rather than the rule. All IOC electricians are expected to be wearing untreated natural fibre undergarments and Cat 2 Arc Rated coveralls at all times. An IOC electrician’s tasks may vary throughout the work day. Even if they are

assigned work that does not involve entering an Arc Flash protection boundary for the entire day, it is probable that this could change. To minimize delays associated with changing into, or out of Cat 2 Arc Rated coveralls, IOC electricians are required to wear the Cat 2 Arc Rated coveralls unless directed otherwise by their team leader. For example, if an IOC electrician is expected to work in a particularly dirty or greasy environment where no potential Arc Flash hazards are present, then the Cat 2 Arc Rated coveralls may be removed to prevent their damage while performing the work.

With or without the Cat 2 Arc Rated coveralls, it is still expected that all IOC electricians wear untreated natural fibre undergarments at all times. Clothing made from flammable synthetic materials that melt at temperatures below 315oC (600oF), e.g., acetate, acrylic, nylon, polyester, polyethylene, polypropylene, and spandex, alone or in blends, shall not be used in undergarments. These materials melt as a result of Arc Flash exposure conditions, form intimate contact with the skin, and aggravate the burn injury. However, non-melting fabric undergarments or socks that contain incidental amounts of elastic may be used.



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Figure 1. Category 0 (White) Arc Flash Hazard Label

*Note: Values in label may not reflect actual numbers.

6.4.1.2 Yellow (Categories 1 & 2)

Electrical personnel, who are expected to perform work in a Category 1 or 2 (Yellow) Arc Flash protection boundary at IOC, are required to wear Category 2 Arc Rated PPE. Cat 2 Arc Rated PPE consists of untreated natural fibre undergarments, Cat 2 Arc Rated clothing (a combination of a Cat 2 Arc Rated long sleeved shirt and pants or Cat 2 Arc Rated coveralls), a Cat 2 Arc Rated face shield and Cat 2 Arc Rated leather gloves. Since rubber insulating gloves and leather protectors are required for work on exposed energized electrical conductors above 50Vac and 110Vdc, as well as within Arc Flash protection boundaries, the combination of rubber insulating gloves with leather protectors meets the Arc Rated PPE requirements.

Figure 2. Categories 1 & 2 (Yellow) Arc Flash Hazard Label




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6.4.1.3 Orange (Categories 3 & 4)

Electrical personnel, who are expected to perform work in a Category 3 or 4 (Orange) Arc Flash protection boundary at IOC, are required to wear Category 4 Arc Rated PPE. Cat 4 Arc Rated PPE consists of untreated natural fibre undergarments, a Cat 4 Arc Rated suit, a Cat 4 Arc Rated hood, and Cat 4 Arc Rated leather gloves. Since rubber insulating gloves and leather protectors are required for work on exposed energized electrical conductors above 50Vac and 110Vdc, as well as within Arc Flash protection boundaries, the combination of rubber insulating gloves with leather protectors meets the Arc Rated PPE requirements.

Figure 3. Categories 3 & 4 (Orange) Arc Flash Hazard Label


6.4.1.4 Red (> Category 4)

An additional level, red, identifies equipment that exceeds the Category 4 Arc Rated PPE protection rating. This equipment must be de-energized before personnel can proceed with their work.

Figure 4. > Category 4 (Red) Arc Flash Hazard Label




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6.4.1.5 Blue (Arc Rated PPE Matrix)

A blue label identifies equipment that requires Arc Rated PPE selection to be determined from a hazard/risk category matrix in lieu of the incident energy analysis. This is the same Arc Rated PPE Matrix that is to be used in the absence of an Arc Flash label (mentioned below) and is provided on the label itself.

Figure 5. Arc Rated PPE Matrix (Blue) Arc Flash Hazard Label

Colour Category Rating (cal/cm2) Minimum Arc Rated PPE Requirements

White 0 0 - 1 Untreated Natural Fibres, Regular PPE 1 1 - 4

Yellow 2 4 - 8

Cat 2 Arc Rated Shirt/Pants or Cat 2 Arc Rated Coveralls, Cat 2 Arc Rated Face shield,

Cat 2 Arc Rated Leather Gloves * 3 8 - 25 Orange 4 25 - 40

Cat 4 Arc Rated Suit, Cat 4 Arc Rated Hood, Cat 4 Arc Rated Leather Gloves *

Red > 4 - N/A – Do not work before de-energizing equipment

Blue Varies Varies Determined by Arc Rated PPE Matrix

• The combination of rubber insulating gloves with leather protectors meets the Arc Rated PPE requirements.

Table 2. Minimum Arc Rated PPE Requirements

6.4.2 Arc Flash Hazard Label Absent

In the absence of an incident energy analysis or Arc Flash hazard label, the following Arc Rated PPE Matrix has been adapted for IOC, from CSA Z462-08 4.3 Work Involving Electrical Hazards. Note that these requirements pertain to exposed energized electrical equipment. Typically, if there are no exposed energized electrical conductors or circuit parts, the requirements are Category 0 Arc Rated PPE.



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AC Voltage Task Category

All work with exposed energized electrical conductors not greater than 130V, unless otherwise noted. 0 50V –

130V Up to 130V control circuits in metal-clad switchgear. 2 All work with exposed energized electrical conductors not greater than 999V, unless otherwise noted. 2

Insertion or removal of individual starter, breaker or fused disconnect buckets from an MCC. 4

Insertion or removal (racking) of circuit breakers from cubicles. 4

131V – 999V

Removal of bolted covers to expose bare energized electrical conductors and circuit parts. 4

All work with exposed energized electrical conductors greater than 1000V, unless otherwise noted. 4

Outdoor, gang operated, disconnect switch operation. 2

1000V &

Above Insulated cable examination, in an open area. 2

Table 3. Arc Rated PPE Matrix

The following requirements apply to the care and maintenance of Arc Rated PPE:

• Arc Rated PPE shall be inspected before each use. Any that are contaminated or damaged to the extent their protective qualities are impaired shall not be used. Any that become contaminated with grease, oil, flammable liquids, or combustible materials shall not be used.

• Arc Rated PPE shall be maintained and/or repaired according to the

manufacturer’s instructions. • Arc Rated PPE shall be stored in a manner that prevents physical damage,

damage from moisture, dust, and other deteriorating agents, and contamination from flammable or combustible materials.

The requirements of Arc Rated PPE are intended to protect workers from Arc Flash hazards, and do not address protection against physical trauma other than exposure to the thermal effects of an Arc Flash. While some situations could result in burns to the skin, with the appropriate PPE selected, burn injury will likely be reduced and be survivable. Because of the explosive effect of some Arc Flashes, physical trauma injuries can occur.

6.5 WORK WITHIN THE LIMITED APPROACH BOUNDARY OF UNINSULATED OVERHEAD LINES

When work is performed in locations containing uninsulated energized overhead lines that are not guarded or isolated, precautions shall be taken to prevent workers from making direct contact with such lines with any unguarded parts of their body or indirectly through conductive materials, tools or equipment. When the work to be performed is such that contact with uninsulated energized overhead lines is possible, the lines shall be de-energized and visibly grounded at the point of work, or suitably guarded.

The overhead power lines can vary in voltage from 4160V, 7200V (CR), 13.8kV (CR), 23Kv (Railway), 35 kV (CR), 46kV and 161kV (ZV). The limit approach distance with respect to carrying out work when a part, a load, a machinery element or a person is 5.5 meters. Restricted distances for the following line voltages are:



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Voltage Phase to Phase Limited Distance Restricted Distance

Over 750V to 75kV 5.5 meters 3 meters

Over 76kV to 250kV 5.5 meters 4.5 meters

If personnel are to perform work inside this limited approach distance, the following must be undertaken:

• Notify the area superintendent, who will evaluate, with the power distribution department, the nature of works to be carried out, a risk assessment and the relevance to deliver an Energized Power Line permit (Appendix 9.3). The permit shall be used in conjunction with a Take 5, Job Hazard Analysis and Risk Assessment.

• The responsible person for the works, in collaboration with the power distribution

supervisor, will inform personnel of applicable safe work procedures.

• A spotter, whose sole responsibility shall be to make sure that the minimal approachable distances are respected and to direct operators accordingly, shall be designated when equipment is operated within the minimal approachable distances of uninsulated energized overhead lines.

• The safety rules described in article 5.4.8 of the CSA standard Z150-98 must be

followed.

When unqualified persons are working on the ground or in an elevated position near overhead lines, the location shall be such that the worker and the longest conductive object the worker might make contact with cannot come any closer to any unguarded energized overhead power line than the limited approach boundary specified above.

The employee must know the maximum voltage, minimal approachable distance and the height of the conductors that are being worked on as well as those that are adjacent.

All overhead line supports and sub-station fences shall have placards indicating the maximum voltage, minimal approachable distance and the height of the conductors.

All overhead lines crossing roadways shall have placards installed nearby, indicating the maximum voltage, minimal approachable distance and the height of the conductors.

All materials, tools and equipment that are required to be transported inside the fenced area of a sub-station must be carried at waist level, as opposed to being elevated.

All electrical equipment must be de-energized before the drainage, filtering, or addition of oil takes place.

Spreadable equipment that risks coming in contact with energized overhead lines must be equipped with a device that will limit the range and properly grounded.

No storage is permitted under the conductors of the energized overhead lines.

Danger tape, complete with the appropriate tags, shall be used as visible indicator to demarcate the hazardous zone when workers are working within the minimal restricted approachable distances of uninsulated energized overhead lines.



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6.6 PERSONAL PROTECTIVE EQUIPMENT (PPE)

Electrical personnel working in areas where electrical hazards are present shall be provided with and use personal protective equipment that is designed and constructed for the work to be performed.

A list of the required PPE for each electrical employee shall be developed by the C2 Electrical Safety Standard Team and audited by the Area Supervisor on an annual basis.

Electrical personnel shall ensure that personal protective equipment is maintained in a safe and reliable condition, visually inspected before each use and stored in manner that prevents damage.

Electrical personnel shall wear shock resistant rubber insulating gloves with leather protectors for work on exposed energized electrical conductors or within an arc flash boundary.

6.6.1 Rubber Insulating Gloves and Mitts

Rubber insulated gloves are primarily worn by electricians while performing live cable work. The user must verify their gloves to make sure they are in good condition every time prior to using them. Please refer to appendix 9.2 for current work practice on rubber insulating gloves and mitts for details on: use, testing, storage, maintenance procedure, and the exchange process.

6.7 OTHER PROTECTIVE EQUIPMENT

Electrical personnel shall use insulated tools when they are working inside the limited approach boundary of exposed energized electrical conductors or circuit parts. The insulated tools shall be rated for the voltages on which they are used. They shall be inspected before each use for damage to the insulation and for damage that could limit the tool from performing its intended function or increase the potential for an incident (e.g., a damaged tip on a screwdriver).

Fuse handling equipment (e.g., pullers) shall be rated for the voltages on which they are used.

Portable ladders shall have non-conductive side rails. They shall be inspected for damage before use.

Danger tape/ barriers and tags shall be used to demarcate the necessary boundary to limit worker access to areas containing exposed energized electrical conductors or circuit parts. The tag shall identify the hazard, person responsible, contact information for the person responsible, the date that the tape was erected and the anticipated date of removal.

Test instruments and their respective equipment shall be rated for the voltages on which they will be used. All instruments and/or equipment shall be approved for use by the C2 Electrical Safety Standard Team. Low voltage Digital Multimeters shall be Cat IV for measuring power system voltage above 240V.

Low voltage non-contact voltage detectors shall only be permitted to prove the presence of rated voltage; not to prove the absence of rated voltage.

Extension cords shall be of the three wire type (including ground wire) and shall be inspected for visual damage before each use. All conductors and connectors shall be intact (the ground prong shall not be defeated). The extension cords shall be protected while in use and stored properly between uses. They shall not be used to supply permanent power. Extension cords shall be inspected and tagged every 2 years.



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7 MAINTENANCE

7.1 GENERAL MAINTENANCE

Electrical personnel who perform maintenance on electrical equipment and installations shall be qualified and competent with the specific equipment maintenance safe work procedures.

The following general maintenance requirements are not intended to replace equipment or area specific best maintenance practices. They are to be used in conjunction with existing standards and best maintenance work practices:

• Overcurrent protective devices shall not be modified, even on a temporary basis, beyond the modifications permitted by the Canadian Electrical Code, Part I.

• All working space and clearances shall be maintained in such a way that they continue to meet the Canadian Electrical Code requirements.

• Equipment, cable trays and enclosure bonding and grounding shall be maintained in a way that ensures electrical continuity.

• Enclosures shall be maintained in a way that guards against accidental contact with exposed energized electrical conductors and circuit parts or other electrical hazards. They shall be inaccessible (key or tool to open) to unauthorized personnel.

• Locks, interlocks and other safety equipment shall be maintained in proper working condition.

• Access to working space and escape passages shall be kept clear and unobstructed.

• Warning and/or circuit or voltage identification signs shall be securely affixed and maintained in legible condition.

• Electrical cables shall be maintained free of damage, shorts and ground that could present a hazard to employees.

• Enclosures shall be kept free of material that could create a hazard.

• Current carrying conductors (busses, switches etc.) and bracing shall be maintained in such a way that they conduct rated current without overheating and withstand available fault current.

• Protective devices shall be maintained to adequately withstand or interrupt available fault current.

7.2 INSPECTIONS

The electrical maintenance departments shall ensure that the electrical equipment and associated safety devices (grounding, circuit breakers etc.) are in accordance with the applicable standards, including but not limited to the manufacturers.



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If a defective piece of electrical equipment is identified, the area supervisor or planner shall be informed. The defective equipment shall be safely tagged out of service by qualified electrical personnel.

Preventative maintenance inspections of electrical equipment shall be carried out on a routine basis; the results of which shall be kept on file by the electrical maintenance departments.

Electrical supply and distribution equipment nominally rated at 600V and above, where accessible, shall be visually and thermographically tested every three years. The testing shall not violate the restricted approach boundary of exposed energized conductors or circuit parts or any other standards. The results of the tests shall be kept on file by the Chief Engineer and Area Superintendent.

Inspection and verification of the ground continuity shall be performed every 2 years; the results of which shall be kept on file by the Area Superintendent.

7.3 DECOMMISSIONING OF OBSOLETE, UNFIT OR UNSAFE ELECTRICAL EQUIPMENT

When electrical equipment has become unfit, unsafe and/or has been deemed obsolete, the following decommissioning requirements shall be undertaken by qualified electrical personnel:

• The person in charge of the work (area supervisor, area planner, project engineer, project manager, company rep etc.) shall be informed.

• The equipments power source shall be opened.

• A long term padlock shall be applied to the power source.

• A tag shall be applied to the power source, indicating the reason and date that the equipment has become unfit, unsafe and/or has been deemed obsolete.

• The field equipment (including cabling, junction boxes, etc.) shall be removed within a reasonable time as determined by the area Superintendent or Chief Engineer.

• Cables shall be removed according to the Cable Removal Procedure 6-PRA-PME-0017.

• The power source (MCC starter, circuit breaker etc.) equipment shall either be removed or decommissioned to a safe spare, fit for use.

• Fit for use, safe spare power source equipment shall be identified as spare, at which point the long term padlock shall be removed.

The person in charge of the work (area supervisor, area planner, project engineer, project manager, company rep etc.) shall ensure that the required change management procedures are followed which include, but are not limited to the following:

• The cost of completing the above decommissioning of obsolete, unfit or unsafe electrical equipment shall be taken into account and covered by the project, work order etc.

• The Single Line Diagrams shall be updated to reflect the modifications made above.



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• The Arc Flash Hazard labels shall be updated to reflect the modifications made above.

7.4 TESTING FOR GROUNDING AND BONDING

The intent of this standard is to ensure that continuity and resistance tests of grounding systems are conducted on a specific schedule in accordance with specified methods and procedures.

DEFINITIONS:

• Grounded – Connected effectively with the general mass of the earth through a grounding path of sufficiently low impedance and having an ampacity sufficient at all times, under the most severe conditions liable to arise in practice, to prevent any current in the grounding conductor from causing a harmful voltage to exist between the grounding conductors and neighbouring exposed conducting surfaces that are in good contact with the earth or surfaces of the earth itself.

• Bonding – A low-impedance path that is obtained by permanently joining all non current carrying metal parts to ensure electrical continuity and has the capacity to conduct safely any current likely to be imposed on it.

• Electrical grounding - connected to or in contact with earth, or connected to some extended conductive body that serves in place of earth, to provide a path for leakage and / or fault currents to prevent an objectionable potential above ground on non-current carrying metal parts.

• Grounding Systems - typically include the following:

o Equipment grounding conductors - the conductors (typically copper wire) used to connect the metal frames or enclosures of electrical equipment to the grounding electrode conductor.

o Grounding electrode conductors - the conductors (copper buss bar, bare copper wire, or insulated copper wire) connecting the grounding electrode to the equipment grounding conductor.

o Grounding electrodes - Typically driven rods connected to each other by suitable means, buried metal, or other effective methods located at the source, to provide a low resistance earth connection.

REQUIREMENTS:

• EFFECTIVE GROUNDING - The path from circuits, equipment, structures, and conduit or enclosures to ground shall be permanent and continuous, have ample carrying capacity to safely conduct the currents liable to be imposed on it, and have impedance sufficiently low to limit the potential rise above ground and to cause the operation of overcurrent devices to isolate the circuit.

• Grounding grids and driven rod electrodes shall have a resistance to ground not to exceed 25 ohms. Where the resistance is above 25 ohms, two or more electrodes connected in parallel shall be used.



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• The resistance of a motor frame to grounded building steel shall not exceed one (1) ohm.

• Electrical equipment shall be grounded in accordance with all applicable federal and provincial regulations and Canadian Electrical Code.

• POWER LINES - All structures, hardware, shield wires, and pole-mounted transformers shall be grounded.

• SUBSTATIONS - All exposed metal parts of switches, structures, transformers, fences, gates, buildings, switchboards, breakers, meters, relays, lightning arresters, and communication equipment shall be grounded.

• All substations shall have a ground grid to which all equipment is bonded. Resistance of grid to earth shall not exceed 25 ohms.

• FIXED EQUIPMENT – Equipment that is fastened in place or connected by permanent wiring methods. Exposed non-current-carrying metal parts of fixed electrical equipment including motors, generators, frames, and rails of electrically operated cranes, electrically driven machinery, etc. shall be grounded.

• PORTABLE EQUIPMENT – Equipment that is fed with portable cords or cables intended to be moved from one place to another. The non-current-carrying metal parts of portable and/or plug-connected equipment shall be grounded.

• Portable electric-powered equipment such as generators, conveyors, electric shovels, drills, etc. with associated portable substations, and switchgear shall be connected to a safety ground system. Trailing cables powering such equipment will have adequately sized ground conductors with continuously monitored ground continuity check equipment.

• Portable tools and appliances protected by CSA or UL approved system of double insulation, or its equivalent, need not be grounded. Where such an approved system is used, the equipment shall be distinctively marked.

• Extension cords used with portable electric tools and appliances shall be of three-wire type and shall be maintained in good condition.

• TEMPORARY WIRING - All temporary wiring shall be effectively grounded in accordance with the National Electrical Code.

• TESTING – Operators or maintainer shall conduct testing of grounds or bonds on a predetermined basis and shall use procedure “IOC-S-E-PRO Testing Continuity for Grounding and Bonding” (Appendix 9.8).

• Equipment grounding conductors - continuity and resistance must be tested immediately after installation, repair, or modification, and a minimal of every two years if conductors are subjected to vibration, flexing, or corrosive environments.

• Grounding electrode conductors - continuity and resistance must be tested immediately after installation, repair, or modification, and a minimal of every two years if conductors are subjected to vibration, flexing, or corrosive environments.

• Grounding electrodes - resistance must be tested immediately after installation, repair, modification, and a minimal of every two years thereafter.



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• Conductors in fixed installations, such as rigid conduit, armoured cable, raceways, cable trays, etc. that are not subjected to vibration, flexing, or corrosive environments may be examined annually by visual observation to check for damage in lieu of the annual resistance test.

• Grounding conductors in trailing cables, power cables, and cords that supply power to tools and portable or mobile equipment must be tested a minimal of every two years. This requirement does not apply to double insulated tools or circuits protected by ground-fault-circuit interrupters (GFCI).

• Testing of equipment grounding conductors and grounding electrode conductors is not required if a fail-safe ground wire monitor is used to continuously monitor the grounding circuit and which would cause the circuit protective devices to operate when the grounding conductor continuity is broken.

RECORDKEEPING:

• A record of the most recent continuity and resistance test or visual examination conducted must be kept and made available for internal and regulatory inspections.

• The records shall:

o Identify the equipment and location tested.

o Identify the person conducting the tests.

o Identify the date of the test

o Record meter reading to the nearest 0.1 ohm

o Identify action taken to address readings over one (1) ohm

o Record a re-test reading upon completion of repairs

• Recordkeeping forms are provided on the Mine to Port intranet.

8 ELECTRICAL PERSONNEL CERTIFICATION PROCESS

The certification and recertification of electrical personnel (Maintainer-Operator Electrical I and II) is required to be completed by the area Supervisor with each employee every two years. The certification process consists of the completion of a competency assessment form based on an area checklist.

The certification process will deem an employee competent to work in the electrical trade in a specified area of the operation. The area will be clearly identified on the competency document and must be based on the area checklist. Employees can be deemed competent to work in multiple areas if assessed appropriately and each area is identified in the form.

Successful certification shall only be permitted when all of the conditions developed by the Area Superintendent and approved by the C2 Electrical Safety Standard Team have been satisfied at the discretion of the Area Supervisor. If a particular condition has not been satisfied, a plan shall be developed, by the Area Supervisor, to facilitate the certification in a timely manner.



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8.1 QUALIFIED ELECTRICAL PERSONNEL RECERTIFICATION CHECKLIST

The Qualified Electrical Personnel Competency Form has been developed and approved by the C2 Electrical Safety Standard Team and referenced in appendix 9.5. The approved Qualified Electrical Personnel Recertification Form shall be kept on file by the supervisor as well as the training department.

8.2 COMPETENCY AREA CHECKLIST

As a component of the Qualified Electrical Personnel Recertification Process, the Competency Area Checklist has been developed by the Area Superintendent and approved by the C2 Electrical Safety Standard Team.

The IOC mine site in Labrador City has been divided into five areas for the purpose of competency assessment. Each employee must demonstrate competency in each area before being permitted to work in the electrical trade in the respective area.

These areas include:

1. Mine Mobile Area 2. Mine Field Area 3. Ore Delivery Area 4. Processing Operations Area 5. Power Distribution Area

The listed and approved competencies for each area are given in appendix 9.6.



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9 APPENDICES

9.1 ARC FLASH RATED PPE SELECTION FLOW CHART

Identify the equipments power source.

Is there an Arc Flash Hazard Label?

Arc Rated PPE Selection

Obtain the hazard colour and required PPE level from the label.

Is the Arc Flash

Hazard Label blue?

Determine the minimum Arc Rated PPE from the Table.

Determine the colour and category from the Arc Rated PPE Matrix, using the rated voltage and task.

YES

NO YES

NO

2Insulated cable examination, in an open area.

2Outdoor, gang operated, disconnect switch operation.

4All work with exposed energized electrical conductors greater than 1000V, unless otherwise noted.1000V

& Above

4Removal of bolted covers to expose bare energized electrical conductors and circuit parts.

4Insertion or removal (racking) of circuit breakers from cubicles.

4Insertion or removal of individual starter, breaker or fused disconnect buckets from an MCC.

2All work with exposed energized electrical conductors not greater than 999V, unless otherwise noted.

131V –999V

2Up to 130V control circuits in metal-clad switchgear.

0All work with exposed energized electrical conductors not greater than 130V, unless otherwise noted.50V –

130V

CatTaskAC Voltage

Determined by Arc Rated PPE Matrix

VariesVariesBlue

N/A – Do not work before de-energizing equipment-> 4Red

25 - 404

Cat 4 Arc Rated Suit, Cat 4 Arc Rated Hood, Cat 4 Arc Rated

Leather Gloves *

8 - 253Orange

4 - 82

Cat 2 Arc Rated Shirt/Pants or Cat 2 Arc Rated Coveralls, Cat 2 Arc Rated Face shield, Cat 2 Arc

Rated Leather Gloves *

1 - 41

Yellow

Untreated Natural Fibres, Regular PPE

0 - 10White

Minimum Arc Rated PPE Requirements

Rating (cal/cm2)CatColour



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9.2 RUBBER INSULATING GLOVES AND MITTS

Reference: IOC-S-E-PRO Rubber Insulating Gloves and Mitts

9.3 ENERGIZED ELECTRICAL WORK PERMIT

Reference: IOC-S-E-FRM Energized Electrical Work Permit

Reference: IOC-S-E-FRM Energized Power Line Clearance Permit

9.4 ELECTRICAL ROOM AND SUBSTATION ACCESS AUTHORIZATION FORM

Reference: IOC-S-E-FRM Electrical Room and Substation Access Authorization Form

9.5 QUALIFIED ELECTRICAL PERSONNEL RECERTIFICATION CHECKLIST

Reference: IOC-S-E-FRM Qualified Electrical Personnel Recertification

9.6 COMPETENCY AREA CHECKLIST

9.6.1 Mine Mobile Area

Reference: IOC-S-E-FRM Area Competency Checklist – Mine Mobile Area (To be developed)

9.6.2 Ore Delivery Area

Reference: IOC-S-E-FRM Area Competency Checklist – Ore Delivery Area (To be developed)

9.6.3 Mine Field Area

Reference: IOC-S-E-FRM Area Competency Checklist – Mine Field Area (To be developed)

9.6.4 Processing Operations Area

Reference: IOC-S-E-FRM Area Competency Checklist – Processing Operations

9.6.5 Power Distribution Area

Reference: IOC-S-E-FRM Area Competency Checklist - Power Distribution



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9.7 OTHER FORMS/CHECKLISTS/PERMITS

Reference: IOC-S-E-FRM Annual Building Grounding System Inspection Log Form

Reference: IOC-S-E-FRM Continuity and Resistance Ground System Log

Reference: IOC-S-E-FRM Equipment Grounding and Bonding System Inspection Record Log

9.8 OTHER PROCEDURES/WORK PRACTICES/STANDARDS

Reference: IOC-S-E-PRO Testing Continuity for Grounding and Bonding

Reference: IOC-S-E-PRO Cable Handling and Removal

Reference: IOC-S-E-PRO Grounding and Bonding Requirements

Reference: C2 Electrical Safety Standard

9.9 ACCESS TO WORK PRACTICE & PROCEDURES

To access the OH&S and CSA regulations on-line, see Figure 9.6.a for explanation of how to access this information.

• Follow steps 1 – 3a for accessing the CEC and CSA • Follow steps 1 – 3b for accessing the OH&S regulations.

For access to both you will need the user name and password identified as #4 on Figure 9.6.a (and on the mine to port website) as follows:

Username: IRONORE Password: IR004NL

To access the Electrical Work Practice and Procedures on-line, see Figure 9.6.b for explanation of how to access this information.

• Follow steps 1 – 3 for accessing the Electrical Safety Documents for Work Practices and Procedures



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Figure 9.6.a Mine to Port – HSE Legislation documents

#1#1

#3b

#3b

#3b

#3b

#2#2

#4



Figure 9.6.b Mine to Port – Electrical Safety document

#1

#2

#3