Master Change Matrix - CoHE

Change log - CoHE overall changes

Section or Lesson

Element

Version number

Original text

New version text

Date

Overall structure of Standard Modules

CoHE v4 Module 1 - CoHE Basic Safety.

Control of Hazardous Energies Standard V5 - CoHE Electrical Safety - Initial and Refresher Training Module - CoHE Pressure Fluid Safety - Initial and Refresher Training Module

Module 2 - CoHE Electrical Safety. Module 3 CoHE Pressure Fluid Safety. COHE-R V4

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CoHE Basic Safety removed, initial and refresher standard combined in a single document and numbering of remaining modules updated throughout.

Module 1 - CoHE Basic Safety Refresher. Module 2 - CoHE Electrical Safety Refresher. Module 3 CoHE Pressure Fluid Safety Refresher.

CONTENTS

CoHE & CoHE-R V4 contents in separate documents 1. LIST OF ABBREVIATIONS ................................................................................................................................. 5 2. TERMS AND DEFINITIONS............................................................................................................................... 5 3. CHANGE LOG ................................................................................................................................................... 8 4. COHE ROLES AND RESPONSIBILITIES .......................................................................................................... 10

1. LIST OF ABBREVIATIONS ................................................................................................................................. 4 2. TERMS AND DEFINITIONS............................................................................................................................... 5 3. CHANGE LOG ................................................................................................................................................... 7 4. SCOPE ............................................................................................................................................................... 9 5. GENERAL REQUIREMENTS OF THE COHE TRAINING STANDARD .............................................................. 9 5.1 Overview 9 5.2 Target Groups 9

4.1 CoHE Basic Safety Module 10 4.2 Electrical Safety Module 11 4.3 Pressure Fluid Safety Module 11

5.3 Aims and Objectives 10 5.4 Duration of Training 10

5. REFERENCE LIST............................................................................................................................................. 12 6. SCOPE ............................................................................................................................................................. 12 7. GENERAL REQUIREMENTS FOR THE GWO COHE MODULES ................................................................... 13 7.1 Overview 13 7.2 Target Group 13 7.3 Aims and Objectives 14 7.4 Duration of the GWO CoHE Standard Modules 14 7.5 Validity Period 15 7.6 Course Codes 15 7.7 Participant Prerequisites for the GWO CoHE Training Standard 15 7.8 Physical Demands 16 7.9 Instructor Qualification Prerequisites 16 8. GENERAL RESOURCES REQUIRED TO DELIVER COHE MODULES ............................................................ 16 8.1 Instructor to Participant Ratio 16 8.2 Training Facilities 17 8.3 Training Staff 17 8.4 Equipment 17 9. USING THIS STANDARD TO DEVELOP TRAINING ....................................................................................... 17

5.5 Validity Period 11 5.6 Course Codes 11

5.7 Participant Prerequisites 12 5.8 Instructor Qualification 12 6. RESOURCES REQUIRED TO DELIVER COHE MODULES .............................................................................. 13 6.1 Training Facilities & Equipment 13 7. USING THIS STANDARD TO DEVELOP TRAINING ....................................................................................... 13

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7.1 Participant Performance Assessment 13 7.2 CoHE Support Guidance and References 16

1. LIST OF ABBREVIATIONS

CoHE Control of Hazardous Energy GFCI Ground Fault Circuit Interrupter GWO Global Wind Organisation PE Protective Earth PPE Personal Protective Equipment

ANSI American National Standards Institute AC Alternating Current BTTM / BTTE / BTTH Basic Technical Training Mechanical / Electrical / Hydraulic (see GWO BTT Standard) CoHE Control of Hazardous Energies DC Direct Current GWO Global Wind Organisation HV High Voltage IEC International Electrotechnical Commission LOTO Lockout Tagout LV Low Voltage NFPA National Fire Protection Association OSHA Occupational Safety and Health Administration PPE Personal Protective Equipment

RCD Residual Current Device WTG Wind Turbine Generator

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SSOW Safe System of Work WTG Wind Turbine Generator WTSR Wind Turbine Safety Rules

2. TERMS AND DEFINITIONS

Approach boundaries Limited Approach Boundary This is the closest distance that an Ordinary Electrical Person can approach exposed energised conductors without escort. An Ordinary Electrical Person may be escorted within the Limited Approach Boundary by a Qualified Electrical Person but may never enter the Restricted Approach Boundary. All persons in the Limited Approach Boundary must wear the minimum PPE for electrical work. All tools that enter the Limited Approach Boundary must be insulated for the equipment’s voltage Restricted Approach Boundary The Restricted Approach Boundary may only be entered by a Qualified Electrical Person. All parts of the Qualified Electrical Person that enter the Restricted Approach Boundary must be insulated from the equipment’s voltage. An Energised Electrical Work Permit is required to enter the Restricted Approach Boundary, unless performing switching or taking measurements Approach boundaries

As part of the risk assessment process for electrical work, approach boundaries should be determined. There are two shock protection boundaries; the Limited Approach Boundary and the Restricted Approach Boundary, that must be established in order to provide a safe distance for personnel from exposed, energized electrical components. For supporting guidance on good working practices on approach boundaries refer Annex 2

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2. TERMS AND DEFINITIONS

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Arc flash: An explosive electrical discharge that occurs when current flows through the air between conductors, releasing intense heat (up to 19,000 °C), light and blast shock wave. This dangerous event can pose significant risks of burns and blast injuries.

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2. TERMS AND DEFINITIONS

Establishing an electrically safe work condition (when and how to establish.) When? Whenever someone is required to enter the Limited Approach Boundary to do tasks other than visual inspection and whenever someone needs to enter the Restricted Approach Boundary for tasks other than "switching" or "measuring" How? 1) Determine all possible sources of electrical supply to the specific equipment. Check applicable up-to-date drawings, diagrams, and identification tags 2) After properly interrupting the load current, open the disconnecting device(s) for each source 3) Whenever possible, visually verify that all contact points of the disconnected devices are fully open, or that draw-out type circuit breakers are withdrawn to the disconnected position 4) To mitigate for activation spring failure in circuit breakers equipped with spring activation, the spring must be released prior to opening the breaker or prior to using the breaker as the isolation point 5) Where the possibility of stored electrical energy exists, this must be isolated or insulated. Where this is not possible the energy must be dissipated by using an approved tool rated and designed for the purpose 6) Verify absence of voltage to verify that the circuit parts are de-energised 7) For low voltage circuits with the possibility of induced voltage, apply short-circuiting earth connections rated for the fault current 8) Apply lockout/tagout devices in accordance with the local legislation and specific company procedure and rules. Depending on the configuration of the circuit it may be necessary to perform this step prior to steps five - seven

Establishing an electrically safe work condition Establishing an electrically safe work condition is the mandatory, step-by-step process of de-energizing, locking/tagging out, and verifying the absence of voltage on electrical equipment before work begins to prevent shock and arc flash injuries. It ensures equipment is fully isolated and safe to touch before work starts. For supporting guidance on good working practices on establishing an electrically safe work condition refer Annex 2

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2. TERMS AND DEFINITIONS

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2. TERMS AND DEFINITIONS 2. TERMS AND DEFINITIONS

Exposed electrical parts: Electrical components or parts capable of being inadvertently touched or approached nearer than a safe distance by a person that is by not being enclosed or insulated (e.g. IP0X, IP1X).

Exposed electrical parts:Electrical components or parts capable of being inadvertently touched or approached nearer than a safe distance by a person, due to not being properly enclosed or insulated (e.g. IP0X, IP1X).

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n/a

High Voltage In this GWO training standard, the term High Voltage is used for voltages normally exceeding low voltage. The exact voltage designation varies globally depending on where you work. Use of the term High Voltage: Terms for low, medium and high voltage may be applied in different ways in different regions and in other working contexts, such as at the electrical distribution and transmission network levels. For example, IEC defines high voltage as a voltage which exceeds 1000 V AC or 1500 V DC., while NFPA 70E and OSHA defines on or above 600V as high voltage working. At the electrical network level, IEC defines high voltage lines as those above 36 kV (36,000 volts), while medium voltage lines are networks with a voltage between 1 and 35 kV (1,000 and 35,000 volts). V4 - V5 02.03.26

2. TERMS AND DEFINITIONS

Isolation point: An isolation device shall ensure a reliable disconnection or separation from an energy source.

Isolation Point: A specific, identified device or location on equipment which shall ensure reliable disconnection or separation from an energy source.

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2. TERMS AND DEFINITIONS

n/a

Low Voltage In this GWO training standard, the term low voltage is used to refer to voltages less than those defined as high voltage. The exact voltage designation varies globally depending on where you work. Use of voltage classifications: IEC defines LV as voltages normally exceeding 50 V AC or 120 V DC but not exceeding 1000 V AC or 1500 V DC between conductors, or 600 V AC or 900 V DC between conductors and earth. According to the ANSI C84.1-2020: low voltage is between 240 to 600 V and medium voltage is 2.4 to 69kV. V4 - V5 02.03.26

2. TERMS AND DEFINITIONS

Minimum arc flash PPE: Minimum: • safety glasses • non-melting clothing (including underwear) with long sleeves and long trousers (small parts of melting materials are acceptable but should be reduced to the minimum possible, ideally eliminated, for example elasticated waistbands) • safety shoes with non-melting materials (acceptable exceptions are the sole and shoelaces)

Suitable PPE is required for all work based on the task risk assessment. In practice the minimum requirement is generally considered to be arc-rated, flame-resistant clothing and protective gear that protects against the heat and burn risks identified in the assessment. For supporting guidance on good working practices on minimum arc flash PPE refer to Annex 2

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2. TERMS AND DEFINITIONS

Pre-task or job briefing (toolbox talk) Before starting each job, the employee in charge of the job must conduct a job briefing with the employees involved. The briefing must cover such subjects as:

Pre-task briefing Also known as a ‘Job Briefing’ or ‘Toolbox Talk’. Before starting each job, the person in charge of the job must conduct a briefing with the employees involved. The briefing must cover such subjects as: • hazards related to the job tasks • work procedures involved • special precautions • energy source controls • personal protective equipment requirements

• hazards related to the job • work procedures involved • special precautions • energy source controls • personal protective equipment requirements

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2. TERMS AND DEFINITIONS

Safe handling of batteries and capacitors a. always visually inspect the batteries and capacitors before starting work; look for signs of distress and leakage b. take precautions to guard battery terminals against short circuiting by covering the terminals with insulating tape or insulating mats c. ensure all batteries and capacitors are correctly and securely mounted d. ensure the batteries and capacitors are wired with the correct polarity as per the wiring diagrams and that all terminals are tight e. defective batteries and capacitors must be disposed of in accordance with local legislation f. insulated tools approved for the rated voltage must be used when working around live, exposed conductors

Safe handling of batteries and capacitors Safe handling of batteries and capacitors involves adhering to strict safety procedures to prevent electrical shock, chemical burns, fires, and explosions, as both components store and release significant electrical energy. Safe handling requires using appropriate PPE, ensuring devices are de-energized, storing them in cool, dry, and ventilated areas, and disposing of them as hazardous waste For supporting guidance on good working practices on safe handling of batteries and capacitors refer to Annex 3 V4 - V5 02.03.26

2. TERMS AND DEFINITIONS

Worked example A worked example is a step-by-step demonstration of how to best perform a task or solve a problem. These include a starting point, a desired goal state, and a chosen solution to reach the goal state. They manage cognitive load by focusing on critical aspects of the solution steps and the solution. It is important to use a less is more approach and include only what participants need to understand the solution. Adding extra and ‘nice to know’ information or content makes it more difficult for participants to understand For more information, please visit: https://3starlearningexperiences.wordpress.com/2018/11/13/why-and-how-to-use-worked-examples-in-the-workplace/ Worked example

A worked example is a step-by-step demonstration of how to best perform a task or solve a problem, including a starting point, a desired goal state, and a chosen solution to reach the goal state.

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2. TERMS AND DEFINITIONS

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Note Refer to Annex 2 for supporting guidance and references for development of training programmes. Definitions for roles and responsibilities used within the CoHE Training Standard are detailed in Annex 2 supporting guidance. Training providers should adapt terms where required during training to align to the relevant terminology applicable in their region.

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COHE ROLES AND RESPONSIBILITIES

(combined this content into Section 2 Terms and Definitions) Seperate lists for each module under 4.1 CoHE Basic Safety Module 4.2 Electrical Safety Module 4.3 Pressure Fluid Safety Module.

COHE ROLES AND RESPONSIBILITIES

Moved content to Annex 2 for supporting guidance and references Combined as a single list of roles for the standard and removed reference to CoHE Basic Safety.

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Duplicated in the Refresher standard with the same numbering.

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Master Change Matrix - CoHE

COHE ROLES AND RESPONSIBILITIES

(Safe isolation) Authorised Person (role and responsibilities) A person designated to be in charge of a particular lockout. Examples of responsibilities: • for Lockout-Tagout at the place of work.

Authorised Person A person designated to be in charge of a particular lockout and safe isolation. May be referred to other terms in different regions such as: Authorised Technician (as per the WTSR) / Authorized Employee (as per OHSA) / Isolating Technician / Isolating Turbine Technician (ITT) / Safe Isolation Authorized Person / Responsible Individual Examples of responsibilities: • for Lockout-Tagout at the place of work

COHE ROLES AND RESPONSIBILITIES

• to ensure everyone working under the lockout applied follows the particular rules. • for the use of group locks, personal locks and other Lockout-Tagout equipment. This role has been trained in establishing a safe work condition through the application of Lockout-Tagout practices including:

• to ensure everyone working under the lockout applied follows the particular rules • for the use of group locks, personal locks and other Lockout-Tagout equipment This role has been trained in establishing a safe work condition through the application of Lockout-Tagout practices including:

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• isolating the equipment or system. • attach all locking devices and tags.

• isolating the equipment or system • attach all locking devices and tags

COHE ROLES AND RESPONSIBILITIES

Note The following roles are for general reference and are not fully aligned with any standard or safe system of work. These definitions were made for the sake of creating this global training standard based on the common ground of different recognised standards.

Note The definitions of roles and responsibilities used within the CoHE Training Standard are based on common elements of globally recognised standards and are not aligned to a specific regional standard or safe system of work. They provide a general reference for development of training programmes and training providers should adapt these terms where required during training to align to the relevant terminology applicable in their region.

COHE ROLES AND RESPONSIBILITIES

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3. CHANGE LOG

Record of V4 changes

For detailed descriptions of changes, please see the changelog published on GWO’s website: CoHE V5 Change Log (website link).

CoHE Basic Safety (BASC) and Basic Safety Refresher (BASC-R) module removed from CoHE standard. • CoHE Basic Safety and Basic Safety Refresher module removed leaving two modules within the CoHE standard. References to CoHE Basic Safety / Refresher removed throughout. • Prerequisites updated to reflect BASC module being republished as part GWO BTT standard. Combined Initial and Refresher sections within a single standard. • Initial and Refresher Training now defined as different training courses available under a single Module - terminology referring to modules updated throughout. Number of sections in the standard simplified and numbering updated throughout. • Overall timing for Electrical Safety Initial Training reduced from 10 hours 45 min to 8 hours. • Initial training content updated to reflect a focus on building on the existing basic training and experience of participants and removing extensive time on basic introductory level content. - Basic content on electrical safe working practices and PPE (previously lessons 3 and 4) replaced by review of participants’ existing experience on these topics, combined with the updated lesson 3. - Basic content on stored energy, batteries and capacitors working practices and PPE (previously lessons 7) replaced by review of participants’ existing experience on these topics, practical element combined with the updated lesson 5. • Refresher training content updated to reflect a focus on using existing experience of participants. CoHE Pressure Fluid Safety Initial and Refresher Training Module. • Overall timing for Pressure Fluids Safety Initial Training reduced from 7 hours to 5 hours and 30 minutes.

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• Initial training content updated to reflect a focus on building on the existing basic training and experience of participants and removing extensive time used on basic introductory level content. - Basic content on pressure fluids safe working practices and PPE (previously lessons 3 and 4) replaced by review of participants’ existing experience on these topics, combined with updated lesson 3. • Refresher training content updated to reflect a focus on using existing experience of participants.

4. SCOPE

Numbered as section 6

Numbered as section 4 Removal of content related to CoHE Basic Safety Module.

4. SCOPE

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4. SCOPE

Hazardous energies pose a high risk of injury to all workers working within the wind industry. One of the reasons for this is that hazardous energies are found in various forms within the wind turbine environment and within the environment of a wind farm. This CoHE training standard describes training that complements company, turbine, regional and equipment specific CoHE trainings by providing a common basis for CoHE trainings that are recommended by the members of GWO but does not automatically qualify the participants. These nominations can only be granted according to company specific trainings, rules, and procedures along with national and regional legislation. Lastly, the members of GWO also strongly emphasise that company specific rules and procedures along with national and regional legislation shall always be looked up and followed when working in the wind industry. This is because CoHE rules, procedures and requirements can vary depending on: national and regional legislation; company approach and WTG model. The standard comprises of three modules: 1.CoHE Basic Safety Module 2.CoHE Electrical Safety Module 3.CoHE Pressure Fluid Safety Module Training is verified through GWO’s WINDA database. This standard has been developed in response to the demand for recognisable Control of Hazardous Energies (CoHE) training in the industry and has been prepared in co-operation between the members of GWO based on risk assessments, in-depth descriptions of job roles and tasks relevant to CoHE in the wind industry as well as factual incident and accident statistics from G+ and the wind industry.

Hazardous energies are found in various forms within the wind turbine and the environment of a wind farm, posing a high risk of injury to all workers within the wind industry. The GWO Control of Hazardous Energies (CoHE) standard has been developed in response to the demand for recognisable CoHE training for the wind industry. It has been prepared in co-operation between the members of GWO based on Safe Systems of Work (SSOW), risk assessments, job roles and tasks relevant to CoHE in the wind industry, as well as factual incident and accident statistics from G+ and the wind industry. The GWO CoHE training standard adopts a generic approach to training for work with highly varied regional, company and site-specific regulations, practices and procedures, with significant differences in equipment and ways of working. This training is recommended by the members of GWO to support and underpin progressing to company specific training. Completion of GWO CoHE training provides and maintains participants foundational knowledge, skills and abilities in the safe control of hazardous energies. The training should be supplemented by company specific SSOW training and training specific to the region, site, turbine and equipment-specific training as required. It is always the responsibility of the duty holder to determine if a GWO training is sufficient in relation to the tasks, hazards and risks they expose a GWO trained person to, or if additional training is required. V4 - V5 02.03.26

4. SCOPE

5. GENERAL REQUIREMENTS OF THE COHE TRAINING STANDARD

Numbered as section 7 GENERAL REQUIREMENTS FOR THE GWO COHE MODULES GENERAL REQUIREMENTS FOR THE GWO COHE REFRESHER STANDARD

Numbered as section 5 GENERAL REQUIREMENTS OF THE COHE TRAINING STANDARD Removal of content related to CoHE Basic Safety Module and merging of initial and refresher. Moved the content related to aims of the modules from a 'Note' under target audience to the appropriate section for aims ans objectives.

5. GENERAL REQUIREMENTS OF THE COHE TRAINING STANDARD

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5.1 Overview

7.1 Overview The GWO CoHE Training standard is divided into the following 3 modules: Module 1: CoHE Basic Safety Module 2: CoHE Electrical Safety Module 3: CoHE Pressure Fluid Safety

5.1 Overview The GWO CoHE Training Standard is divided into the following 2 modules:

5.1 Overview

CoHE Electrical Safety - Initial and Refresher Training CoHE Pressure Fluid Safety - Initial and Refresher Training

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(Appears in COHE-R scope section) The standard comprises of three modules: 1. CoHE Basic Safety Refresher 2. CoHE Electrical Safety Refresher 3. CoHE Pressure Fluid Safety Refresher

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5.2 Target Groups

Target Group for the CoHE Basic Safety Module This module is targeted at candidates working in the wind industry where they are exposed to the risk of injury related to hazardous energies.

Target Group for the CoHE Electrical Safety Module The training target group includes workers required to perform isolations and testing for the absence of voltage in accordance with existing documentation on low voltage electrical systems, to be able to safely carry out servicing and planned corrective maintenance or specific tasks like component replacement. This person will enable others to work safely on low voltage electrical systems by establishing an electrically safe work condition as the responsible Qualified Electrical Person (NFPA 70E), Electrical Skilled Person (EN50110) or Authorised Technician (WTSR). Target Group for the CoHE Pressure Fluid Safety Module The training target group includes workers required to perform isolations and testing for the absence of pressure in accordance with existing documentation on pressure fluid systems, to be able to safely carry out servicing and planned corrective maintenance or specific tasks like component replacement. This person will enable others to work safely on pressure fluid systems by establishing a safe work condition as the responsible Qualified Pressure Fluids Person.

5.2 Target Groups

Target Group for the CoHE Electrical Safety Module This module is targeted at candidates whose scope of work will involve performing isolations and testing for the absence of voltage (in accordance with existing documentation) to be able to safely carry out specific tasks like component replacement, servicing and planned corrective maintenance on low voltage1 electrical systems. Additionally, this person will also be responsible for establishing an electrically safe work condition, as e.g. a Qualified Electrical Person (NFPA 70E), Electrical Skilled Person (EN50110), Authorized Technician (WTSR), to enable others to work safely on low voltage electrical systems. Note The GWO CoHE Electrical Safety Module and Pressure Fluid Safety Module are aimed towards improving the candidates´ ability to “work safely” with electricity and fluids under pressure. This means that the two modules are not aimed at improving candidates´ technical knowledge, skills and abilities regarding electricity or pressure fluid systems. Candidates should already possess these technical knowledge, skills, and abilities before attending the modules. Similarly, it is not the intention of the GWO CoHE Standard (or these two modules) to promote the acquisition of advanced knowledge, such as troubleshooting. Target Group for the CoHE Pressure Fluid Safety Module This module is targeted at candidates whose scope of work will involve performing isolations and testing for the absence of pressure (in accordance with existing documentation) to be able to safely carry out specific tasks like component replacement, servicing and planned corrective maintenance on pressure fluid systems. Additionally, this person will also be responsible for establishing a safe work condition to enable others to work safely on pressure fluid systems. Note Candidates, who already possess the intended knowledge, skills, and abilities of the GWO CoHE Standard can apply for merit using the GWO merit process.

( Notes related to course objectives moved to Aims and Objectives section)

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5.2 Target Groups

Target Group for the CoHE Basic Safety Refresher Module This module is targeted at candidates working in the wind industry where they are exposed to the risk of injury related to hazardous energies. Target Group for the Electrical Safety Refresher Module

Combined as above

5.2 Target Groups

This module is targeted at candidates whose scope of work will involve performing isolations and testing for the absence of voltage (in accordance with existing documentation) to be able to safely carry out specific tasks like component replacement, servicing and planned corrective maintenance on low voltage1 electrical systems. Additionally, this person will also be responsible for establishing an electrically safe work condition, as e.g. a Qualified Electrical Person (NFPA 70E), Electrical Skilled Person (EN50110), Authorised Technician (WTSR), to enable others to work safely on low voltage electrical systems. Note The GWO Electrical Safety Refresher Module and Pressure Fluid Safety Refresher Module are aimed towards improving the candidates´ ability to “work safely” with electricity and fluids under pressure. This means that the two modules are not aimed at improving candidates´ technical knowledge, skills and abilities regarding electricity or pressure fluid systems. Candidates should already possess these technical knowledge, skills, and abilities before attending the modules. Similarly, it is not the intention of the GWO CoHE standard (or these two modules) to promote the acquisition of advanced knowledge, such as troubleshooting Target Group for the Pressure Fluid Safety Refresher Module This module is targeted at candidates whose scope of work will involve performing isolations and testing for the absence of pressure (in accordance with existing documentation) to be able to safely carry out specific tasks like component replacement, servicing and planned corrective maintenance on pressure fluid systems. Additionally, this person will also be responsible for establishing a safe work condition to enable others to work safely on pressure fluid systems. Note Candidates, who already possess the intended knowledge, skills, and abilities of the GWO CoHE Refresher Standard can apply for merit using the GWO merit process.

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5.3 Aims and Objectives

CoHE V4 Section 7.3 The GWO CoHE Standard will enable participants to manage the risks related to hazardous energies in the wind industry and act safely when in the vicinity of hazardous energies or when working on systems and equipment containing hazardous energies.

The GWO CoHE training aims to enable participants to manage and control the risks related to hazardous energies in the wind industry and to safely control work when in the vicinity of hazardous energies or when working on systems and equipment containing hazardous energies. The objectives of the CoHE Electrical Safety and Pressure Fluid Safety modules improve and refresh participants´ ability to work safely, to manage and control the risks of electricity and fluids under pressure. Note GWO CoHE training is not aimed at improving technical capabilities regarding electricity or pressure fluid systems or the acquisition of advanced knowledge, such as troubleshooting. Before attending training, participants should already possess technical knowledge, skills, and abilities in electricity or pressure fluid systems. Note CoHE Electrical Safety training does not prepare participants to manage or control the risks related to operating high voltage electrical systems or hazardous energies from HV systems. V4 - V5 02.03.26

5.3 Aims and Objectives

CoHE-R V4 Section 7.2 Training in accordance with this GWO CoHE Refresher Standard will enable participants to manage the risks related to hazardous energies in the wind industry and act safely when in the vicinity of hazardous energies or when working on systems and equipment containing hazardous energies.

5.4 Duration of Training

7.4 Duration of the GWO CoHE Standard Modules The total contact time for completing the stand-alone modules in the CoHE standard is 21 hours and 55 minutes. This is based on the times given in the module timetables and summarised in table 7.4 below. The training provider must not exceed the times per day given in table 7.4.1, below.

The total contact time for completing each course as standalone training within the CoHE modules is given in the course timetables and summarised in the table below. The training provider must not exceed the maximum contact time and training day durations as given below.

5.4 Duration of Training

Module - Course Duration CoHE Electrical Safety - Initial Training 8 hours CoHE Electrical Safety - Refresher Training 4 hours CoHE Pressure Fluid Safety - Initial Training 5 hours 30 mins CoHE Pressure Fluid Safety - Refresher Training 2 hours 20 minutes

Modules DuraƟon CoHE Basic Safety Module4 hours 10 minutes CoHE Electrical Safety Module10 hours 45 minutes CoHE Pressure Fluid Safety Module7 hours

If a participant fails to meet the demands of a Control of Hazardous Energy training, they shall attend a new Control of Hazardous Energy training.

(moved content related to failure on the course to Section 7.1 Participant Performance Assessment)

7.3 Duration of the GWO CoHE Refresher Modules The total contact time for completing the stand-alone modules in the CoHE Refresher Standard is 7 hours and 40 minutes. This is based on the times given in the module timetables and summarised in table 7.4.1 below. The training provider must not exceed the time per day given in table 7.4.1 below.

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Modules Duration CoHE Basic Safety Refresher Module 1 hours 20 minutes CoHE Electrical Safety Refresher Module 4 hours CoHE Pressure Fluid Safety Refresher Module 2 hours 20 minutes

If a participant fails to meet the demands of a Control of Hazardous Energy Refresher training, they shall attend a new Control of Hazardous Energy Refresher training.

5.5 Validity Period

CoHE V4 7.5 Validity Period Course/module Training Record Validity (Months) CoHE Basic Safety Module 24 CoHE Electrical Safety Module 24 CoHE Pressure Fluid Safety Module 24 CoHE-R V4 7.4 Validity Period Course/module Training Record Validity (Months)

Course/module Training Record Validity (Months) CoHE Electrical Safety Module 24 CoHE Pressure Fluid Safety Module 24Module - Course Training Record Validity (Months) CoHE Electrical Safety - Initial Training 24 CoHE Electrical Safety - Refresher Training 24 CoHE Pressure Fluid Safety - Initial Training 24 CoHE Pressure Fluid Safety - Refresher Training 24

5.5 Validity Period

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CoHE Basic Safety Refresher 24 CoHE Electrical Safety Module 24 CoHE Pressure Fluid Safety Module 24

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Master Change Matrix - CoHE

5.6 Course Codes

CoHE V4 Module Course Code

Module - Course Course Code CoHE Electrical Safety - Initial Training ES

5.6 Course Codes

CoHE Basic Safety BaSC CoHE Electrical Safety ES CoHE Pressure Fluid Safety PFS

CoHE Electrical Safety - Refresher Training ES-R CoHE Pressure Fluid Safety - Initial Training PFS CoHE Pressure Fluid Safety - Refresher Training PFS-R

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CoHE-R V4 Module Course Code

CoHE Basic Safety Refresher BaSC-R CoHE Electrical Safety Refresher ES-R CoHE Pressure Fluid Safety Refresher PFS-R

5.7 Participant Prerequisites

7.7 Participant Prerequisites for the GWO CoHE Training Standard Training and experience prerequisites There are prerequisites to attend the Electrical Safety and Pressure Fluid Safety modules.

All participants must meet the participant prerequisites described in the GWO Requirements for Training, as well as those detailed below for each training. Training providers may apply additional prerequisites as necessary to comply with an employing company policy or any local regulatory compliance requirement.

5.7 Participant Prerequisites

The participants must have completed the CoHE Basic Safety and the BTT Electrical module before attending the Electrical Safety Module. It is strongly recommended that before attending the Electrical Safety Module participants have some applicable working experience with electricity supervised by a Qualified Person. This means that the participants should have experience working in a team lead by a Qualified Person, who performed pre-task briefings, isolations, and testing, created a safe work condition for others to work under, lead and supervised work parties. Similarly, the participants must have completed the CoHE Basic Safety Module and the BTT Hydraulic module before attending the Pressure Fluid Safety Module. It is strongly recommended that before attending the Pressure Fluid Safety Module participants have some applicable working experience with pressure fluids supervised by a Qualified Person. This means that the participants should have experience working in a team lead by a Qualified Person, who performed pre-task briefings, isolations, and testing, created a safe work condition for others to work under, lead and supervise work parties. There are no training prerequisites for the CoHE Basic Safety module.

Participant Prerequisites for CoHE Electrical Safety - Initial Training Before attending CoHE Electrical Safety Initial Training participants must have completed GWO BTT Electrical (BTTE) training and must have completed GWO BTT Hazardous Energy Basic Safety (HEBS) training (or equivalent electrical LOTO awareness training). This training is intended for persons who have relevant experience working with electricity while supervised by a Qualified Person. It is strongly recommended that participants have experience working in a team led by a Qualified Person who performed pre-task briefings, isolations, and testing, created a safe work condition for others to work under and supervised work parties.

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Participant Prerequisites for CoHE Electrical Safety – Refresher Training To attend CoHE Electrical Safety Refresher Training, the participants shall possess a valid WINDA training record for CoHE Electrical Safety Initial or Refresher training.

CoHE 7.8 Physical Demands / CoHE-R 7.7 Physical Demands All personnel participating must meet the participant prerequisites described in the GWO Requirements for Training.

(Moved content to the Participant Prerequisites section 5.7. and removed heading.)

5.7 Participant Prerequisites

7.6 Participant Prerequisites for the GWO CoHE Refresher Standard Training and experience prerequisites The participants shall possess valid CoHE training records in WINDA for the relevant refresher modules prior to attending the CoHE refresher trainings. There are additional prerequisites to attend the CoHE Electrical Safety Refresher and CoHE Pressure Fluid Safety Refresher Modules. The participants must have completed the CoHE Basic Safety and the BTT Electrical Module before attending the Electrical Safety Refresher Module. Also, it is strongly recommended that before attending the Electrical Safety Refresher Module, participants have some applicable working experience with electricity supervised by a Qualified Person. Similarly, the participants must have completed the CoHE Basic Safety Refresher Module and the BTT Hydraulic module before attending the CoHE Pressure Fluid Safety Refresher Module. Also, it is strongly recommended that before attending the CoHE Pressure Fluid Safety Refresher Module, participants have some applicable working experience with pressure fluids supervised by a Qualified Person.

5.7 Participant Prerequisites

(continues from above) Participant Prerequisites for CoHE Pressure Fluid Safety - Initial Training Before attending CoHE Pressure Fluid Safety Initial Training participants must have completed GWO BTT Hydraulics (BTTH) training and must have completed GWO BTT Hazardous Energy Basic Safety (HEBS) training (or equivalent pressure fluids LOTO awareness training). This training is intended for persons who have relevant experience working with pressure fluids while supervised by a Qualified Person. It is strongly recommended that participants have experience working in a team led by a Qualified Person who performed pre-task briefings, isolations, and testing, created a safe work condition for others to work under and supervised work parties.

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Participant Prerequisites for CoHE Pressure Fluid Safety - Refresher Training To attend CoHE Pressure Fluid Safety Refresher Training, the participants shall possess a valid WINDA training record for CoHE Pressure Fluid Safety Initial or Refresher training .orking in a team

5.7 Participant Prerequisites

n/a

Note For any prerequisite above which requires having completed GWO BTT Hazardous Energy Basic Safety (HEBS), CoHE Basic Safety (BaSC) or Refresher BaSC-R) is an acceptable equivalent if the training record is valid.

5.7 Participant Prerequisites

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5.8 Instructor Qualification

CoHE / CoHE-R 7.9 Instructor Qualification Prerequisites A competent GWO CoHE instructor must adhere to the instructor requirements for GWO Training. A competent GWO CoHE Refresher instructor must adhere to the instructor in GWO’s Requirements for Training.

A competent GWO CoHE instructor must adhere to the instructor requirements within the GWO Requirements for Training.

5.8 Instructor Qualification

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8.3 Training Staff The training staff shall fulfil all the requirements listed in Section – 7.9 Instructor Qualifications in GWO’s Requirements for Training. 8. GENERAL RESOURCES REQUIRED TO DELIVER COHE MODULES 8.1 Instructor to Participant Ratio The table below shows the maximum number of participants permitted (per instructor) in an instructor-led training for each of the three modules: Modules Instructor-Participant ratio CoHE Basic Safety 1:12 CoHE Electrical Safety 1:8 CoHE Pressure Fluid Safety 1:8 8. GENERAL RESOURCES REQUIRED TO DELIVER GWO COHE REFRESHER MODULES 8.1 Instructor to Participant Ratio The table below shows the maximum number of participants permitted (per instructor) in an instructor-led training for each of the three modules: Modules Session Instructor-Participant ratio CoHE Basic Safety Refresher ModuleTheory (introducƟon)1:12 PracƟcal (assessment and learning acƟviƟes)1:8 CoHE Electrical Safety Refresher ModuleTheory (introducƟon)1:12 PracƟcal (assessment and learning acƟviƟes)1:4 CoHE Pressure Fluid Safety Refresher ModuleTheory (introducƟon)1:12 PracƟcal (assessment and learning acƟviƟes)1:4 COHE 8.2 Training Facilities All training facilities shall fulfil all the requirements listed in Section 8- Equipment and Physical Resources in GWO’s Requirements for Training. 8.4 Equipment The equipment required for the GWO CoHE Training Standard is shown in Annex 1.

6. RESOURCES REQUIRED TO DELIVER COHE MODULES

The training provider shall ensure that staff, facilities, and equipment are in place to support the training of participants as per the GWO Requirements for Training.

6. RESOURCES REQUIRED TO DELIVER COHE MODULES

(Moved all Instructor-Participant ratio information to sections in each module.)

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6.1 Training Facilities & Equipment

All training facilities shall fulfil the requirements detailed in the GWO Requirements for Training. The equipment required for CoHE modules must be available as listed in Annex 1 and must fulfil national, legal requirements of the country where the training is taking place

6.1 Training Facilities & Equipment

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COHE-R 8.2 Training Facilities All training facilities shall fulfil all the requirements listed in the GWO Requirements for Training. 8.4 Equipment The equipment required for the GWO CoHE Refresher Standard is shown in Annex 1.

7. USING THIS STANDARD TO DEVELOP TRAINING

CoHE / CoHE-R 9. USING THIS STANDARD TO DEVELOP TRAINING The training in this standard is designed around the GWO taxonomy described in the GWO Requirements for Training. Theoretical and practical activities must be delivered according to the defined taxonomic level in order to reach the described learning objectives. When teaching about equipment, a generic approach shall be applied aiming to avoid additional potential product specific formal training after completion of this training. However, national or regional legislation, company gap analysis and location specific risk assessments may require additional product specific familiarisation which is the responsibility of the duty holder. In addition to this, all training based on this standard including all related resources shall, as a minimum, meet the requirements described in the GWO Requirements for Training. Note

7. USING THIS STANDARD TO DEVELOP TRAINING

If you have questions about this standard you can access support and read answers to FAQs in the: GWO Help Centre.(link) The training in this standard is designed around the GWO taxonomy described in the GWO Requirements for Training. Theoretical and practical activities must be delivered according to the defined taxonomic level to reach the described learning objectives.

When teaching about equipment, a generic approach shall be applied. It is intended that completing this GWO training should allow for product specific familiarisation within the workplace and minimise the need for additional formal product specific training. However, adherence to national or regional legislation, company gap analysis and location specific risk assessments, may require additional formal product specific training, which is the responsibility of the duty holder.

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In addition to this, all training based on this standard including all related resources shall, as a minimum, meet the requirements described in the GWO Requirements for Training.

7.1 Participant Performance Assessment

7.4 Duration of the GWO CoHE Standard Modules If a participant fails to meet the demands of a Control of Hazardous Energy training, they shall attend a new Control of Hazardous Energy training. 7.3 Duration of the GWO CoHE Refresher Modules If a participant fails to meet the demands of a Control of Hazardous Energy Refresher training, they shall attend a new Control of Hazardous Energy Refresher training.

If a participant fails to meet the demands of a GWO CoHE training course, they shall attend a new training. The assessment records must be maintained using the Participant Performance Assessment Form as per the GWO Requirements for Training.

7.1 Participant Performance Assessment

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7.1 Participant Performance Assessment

7.8 Design of the Activities in the CoHE Refresher Standard After the introduction in all three modules, the suggested design of the activities in the CoHE Refresher Standard is to start each of the three modules with challenging, realistic assessment activities for the participants e.g. most likely scenarios that require the participants to make the same decisions and take the same actions as the participants would need to do on the job and to meet the learning objectives. This will allow the instructor to assess each participants ability to meet key learning objectives from the original CoHE Training Standard such as establishing a safe working condition in multiple pressure fluid situations or scenarios from a WTG environment (e.g. “show me how to establish a safe working condition here” in simple to very difficult scenarios) By assessing each participant’s ability level, it will be possible for the instructor to provide additional focused and specific learning activities for the participants, who show a gap between their abilities and the desired learning objectives of the CoHE Refresher Standard. These focused and specific learning activities are meant to improve these participants´ performance and should be facilitated for the participants until they have closed this gap and have reached the learning objectives of the CoHE Refresher Standard. Examples of the learning activities could be worked examples demonstrated by the instructor followed by guided and independent practice activities with feedback for the participants. Participants, who in the assessment activities demonstrate and are assessed by the instructor to have achieved the learning objectives of the CoHE Refresher Standard, can complete the training at this point e.g., are not required to spend any more time or receive any additional specific training unless the participants are interested in learning more. This means that all participants will be enabled to reach all the learning objectives according to their individual ability level while ensuring that already fully capable participants spend the minimum amount of time engaging in training in what they can already do. In addition, through this design, the refresher trainings will focus more on application as opposed to just information which makes the training more active and less passive for the participants.

7.1 Participant Performance Assessment

Assessment Activities during CoHE Refresher Training Learning activities for CoHE Refresher Training should start with challenging assessment scenarios designed around the learning objectives, which require participants to make decisions and take actions as would realistically be required on the job, in a range of scenarios from very simple to very complex (e.g. “demonstrate how to establish a safe working condition in this scenario”). This will allow the instructor to assess each participants ability to meet the learning objectives related to establishing a safe working condition in multiple situations from a WTG environment. By assessing each participant, it will be possible for the instructor to provide focused and specific learning activities for participants who show a gap between their capabilities and the learning objectives. Focused and specific learning activities to improve participants performance and should be facilitated for participants within the allocated course timings until they have closed the gap and reached the learning objectives of the CoHE Refresher Training. Once participants are assessed by the instructor to have achieved the learning objectives of the CoHE Refresher Training Standard, the refresher training can be completed without requiring those participants to spend more time on additional training. Through this design, the refresher trainings will spend the minimum amount of time training participants in tasks they can already perform safely and correctly, focus on practical application as opposed to information, and ensure participants are more active and less passive

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The flow of assessment activities could look like this: ( ILLUSTRATION )

(moved illustration of assessment flow to end of section)

7.1 Participant Performance Assessment

(continues from above) Suggested steps before the refresher training: 1. Create challenging, realistic assessment activities that are increasingly challenging for the participants e.g. scenarios. The activities should ask participants to make the required decisions and take the required actions that they need to make to reach the learning objectives. a. Within each assessment activity, it would be beneficial for the participants to have the possibility of failing (catastrophically) and be sent back to the start of that activity to try again. This allows reinforcement and practice until the participants can reach the learning objectives. 2. Identify the minimum information that participants need to know to complete those activities 3. Make that information available as an optional link or resource in the activities. Let people pull the information when they need it 4. Prepare specific, focused learning activities such as worked examples and more practice opportunities in the case that a participant shows a gap between the abilities and the desired learning objectives of the CoHE Refresher Standard

To prepare CoHE Refresher Training: Create assessment activity scenarios that reflect the working conditions they would face in a WTG and are increasingly challenging for participants, which require participants to make decisions and take actions as needed to reach the learning objectives. - Within each assessment activity, it would be beneficial for participants to have the possibility of failing by making improper decisions and actions (under safe conditions, simulating up to catastrophic failure). 2. Identify the minimum information that participants need to know and be provided with to complete the activities. Prepare additional supporting information and guidance resources to be made available as reference to support the activities. 3. Prepare specific, focused learning activities, such as worked examples. In the case a participant shows a gap between the abilities and the desired learning objectives of the CoHE Refresher Training these should be used to provide practice opportunities.

Examples of the learning activities could be worked examples demonstrated by the instructor followed by guided and independent practice activities with feedback for the participants. By focusing on critical aspects of the task, key steps and the solution, and including only the minimum information needed to understand the solution, they can manage the stress and pressure for participants. It is important to limit adding extra content or ‘nice to know’ information which can overload participants, making it more difficult for them to understand critical aspects of the task.

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7.1 Participant Performance Assessment

(continues from above) During CoHE Refresher Modules training: 1. Facilitate the created challenging, realistic assessment activities for the participants e.g. scenarios: a. If a participant makes all the correct decisions and take all the right actions regarding, e.g. which safe working practices to use and decide on all the right and realistic actions without any guidance or support, the participants should be able to complete the refresher in the approx. time duration or in less time b. Optional information and guidance should again always be available as a link or resource, so if a participant is interested in learning more, they can pull the material to them. 2. Once participants make their decision and act, consider showing the necessary information in the feedback e.g. first show the consequence of their choices and actions (e.g. what would happen if the participant failed to identify and avoid a safety hazard). Then show the information that the participant should have used, thought about, or looked at. 3. If a participant does not demonstrate the needed abilities or does not reach the learning objective(s), makes mistakes or needs guidance to correctly complete an activity, the participant should be provided with individual, specific, and focused learning activities to improve their performance and reach the learning objectives. These individual focused and specific additional learning activities should be provided to these participants until they have reached the learning objectives of the CoHE Refresher Standard. Examples of these individual focused and specific additional learning activities could be worked examples demonstrated by the instructor followed by more guided and independent practice for the participants to enable the participant to improve and reach the learning objectives. These additional, individual learning activities will very likely lead to additional contact time for the participant than what is listed in the approx. time duration in the CoHE Refresher Standard. 4. Repeat as needed.

During CoHE Refresher Training: 1. Facilitate increasingly challenging and realistic assessment activity scenarios for the participants: a. If a participant makes all the correct decisions and take all the right actions regarding which safe working practices to use and decides on all the right and realistic actions without any guidance or support, they should be able to complete refresher training in the allocated time or less b. Participants failing an activity should be sent back to the start of the activity to try again for reinforcement of learning and practice until they reach the learning objectives, within the limits of the prescribed training duration. c. Information and guidance should always be available as a resource, so if a participant needs or is interested in learning more, they can pull from the reference material available to them. 2. Once participants make their decision and act, consider showing the necessary information in the feedback while first showing the consequence of their choices and actions (e.g. what would happen if the participant failed to identify and avoid a safety hazard). Then show the information that the participant should have used, thought about, or looked at. 3. If a participant does not demonstrate the needed abilities, makes mistakes or needs guidance to correctly complete an activity, they should be provided with specific and focused learning activities to improve their performance until the reach learning objectives, within the limits of the prescribed training duration.

4. Individual focused and specific additional learning activities should be provided to participants until they have reached the learning objectives of the CoHE Refresher Standard. - This could be worked examples demonstrated by the instructor followed by guided and independent practice for participants to enable them to improve to reach the learning objectives. - If additional individual learning activities are required, additional contact time should be allocated as necessary. - Within each assessment activity, it would be beneficial for participants to have the possibility of failing by making improper decisions and actions (under safe conditions, simulating up to catastrophic failure). 5. Repeat within the limits of the prescribed training duration until all objectives are achieved.

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d. Some allowance of additional time beyond the prescribed training duration is acceptable at the discretion of the training provider If a participant fails to meet the demands of the refresher training and reach all learning objectives they must attend a new training.

7.1 Participant Performance Assessment

The flow of assessment activities should look like this: (ILLUSTRATION UPDATED)

7.1 Participant Performance Assessment

(moved illustration of assessment flow to end of section) The flow of assessment activities could look like this: (ILLUSTRATION)

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