1 Table of contents 143

2023-12-04_CoHE_V3

1. List of Abbreviations		5
2. Terms and Definitions		5
3. Change Log		8
4. CoHE roles and responsibilities		10
4.1 CoHE Basic Safety Module		10
4.2 Electrical Safety Module		11
4.3 Pressure Fluid Safety Module		11
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/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
10. Module 1 – CoHE Basic Safety module		19
10.1 Aims and Objectives for the CoHE Basic Safety Module		19
10.2 Duration of the CoHE Basic Safety Module		19
10.3 CoHE Basic Safety Module Participant Ratio		19
10.4 CoHE Basic Safety Module Timetable		20
10.5 Detailed Description of the CoHE Basic Safety Module		21
Lesson 1 - Introduction to the training		21
ELEMENT 1.1 - Safety instructions and emergency procedures		22
ELEMENT 1.2 - Facilities		22
ELEMENT 1.3 - Introduction		23
ELEMENT 1.4 - Aim and objectives		23
ELEMENT 1.5 - Ongoing assessments		24
ELEMENT 1.6 - Motivation		24
Lesson 2 - Control of hazardous energies basic safety		25
ELEMENT 2.1 - CoHE in the wind industry		26
ELEMENT 2.2 - CoHE roles in the wind industry		28
ELEMENT 2.3 - Basic PPE		29
ELEMENT 2.4 - Protections		31
ELEMENT 2.5 - Emergency stop buttons in a wtg		32
Lesson 3 - Lockout-Tagout for an Ordinary Person		32
ELEMENT 3.1 - Lockout-Tagout in the wind industry		33
ELEMENT 3.2 - Lockout-Tagout roles in the wind industry		34
ELEMENT 3.3 - Lockout-Tagout process		36
Lesson 4 - Mechanical safety		39
ELEMENT 4.1 - Why mechanical safety?		39
ELEMENT 4.2 - Mechanical Safety signs		41
ELEMENT 4.3 - The importance of appropriate isolation		42
Lesson 5 - Electrical safety		42
ELEMENT 5.1 - Why electrical safety?		43
ELEMENT 5.2 - Low / high voltage		44
ELEMENT 5.3 - PE and gfci / rcd		46
ELEMENT 5.4 - Static electricity		48
ELEMENT 5.5 - Electrical Safety signs		48
ELEMENT 5.6 - The importance of appropriate isolation		49
ELEMENT 5.7 - Response to an electrical incident		50
Lesson 6 - Pressure Fluid safety		52
ELEMENT 6.1 - Pressure Fluid Safety		52
ELEMENT 6.2 - Hydraulic oil injections		53
ELEMENT 6.3 - Safety signs		55
ELEMENT 6.4 - The importance of appropriate isolation		55
Lesson 7 - Hazardous energy scenario		56
Lesson 8 - Training review		57
ELEMENT 8.1 - Training review		57
ELEMENT 8.2 - Feedback session		58
11. Module 2 -COHE Electrical Safety		60
11.1 Aims and Objectives of the CoHE Electrical Safety Module		60
11.2 Duration of the CoHE Electrical Safety Module		60
11.3 CoHE Electrical Safety Module - Instructor to Participant Ratio		61
11.4 Equipment for CoHE Electrical Safety Module		61
11.5 CoHE Electrical Safety Module Timetable		61
11.6 Detailed Description of the CoHE Electrical Safety Module		63
Lesson 1 - Introduction to the training		63
ELEMENT 1.1 - Safety instructions and emergency procedures		63
ELEMENT 1.2 - Facilities		64
ELEMENT 1.3 - Introduction		64
ELEMENT 1.4 - Aim and objectives		65
ELEMENT 1.5 - Ongoing assessment		66
ELEMENT 1.6 - Motivation		66
ELEMENT 1.7 - Human factors		67
Lesson 2 - Reponsibilities and role of a Qualified Electrical Person		68
ELEMENT 2.1 - Responsibilities and role of a qualified electrical person		68
Lesson 3 - electrical ppe		70
ELEMENT 3.1 - Electrical PPE		70
Lesson 4 - Electrical safe working practises		72
ELEMENT 4.1 - How to perform electrical work tasks safely using electrical safe working practices		72
ELEMENT 4.2 - Exposed electrical conductors and circuit parts		76
ELEMENT 4.3 - Approach boundaries		77
ELEMENT 4.4 - Tools		80
ELEMENT 4.5 - Alerting techniques		81
ELEMENT 4.6 - Job briefing/pre-task briefing		82
ELEMENT 4.7 - Deranged equipment		83
ELEMENT 4.8 - Guards and covers		85
ELEMENT 4.9 - Non-contact techniques (infrared inspections)		85
ELEMENT 4.10 - Arc flash		86
Lesson 5 - Electrically safe working conditions		88
ELEMENT 5.1 - Treating all electrical equipment as live until an electrically safe work condition has been established		88
ELEMENT 5.2 - When to establish an electrically safe working condition		89
ELEMENT 5.3 - How to establish an electrically safe working condition		90
Lesson 6 - Testing and isolation		92
ELEMENT 6.1 - Electrical measurement equipment		92
ELEMENT 6.2 - 3-point test method to prove the absence of voltage		94
ELEMENT 6.3 - Isolation of electrical equipment		95
Lesson 7 - Stored energy		96
ELEMENT 7.1 - Hazards related to batteries and capacitors		96
ELEMENT 7.2 - Task-based training for handling batteries and capacitors in a safe manner		98
Lesson 8 - Hazardous electrical safety scenarios		99
Lesson 9 - Training review		101
ELEMENT 9.1 - Training review		101
ELEMENT 9.2 - Feedback session		102
12. Module 3 – COHE Pressure Fluid Safety Module		104
12.1 Aims and Objectives of the CoHE Pressure Fluid Safety Module		104
12.2 Duration of the CoHE Pressure Fluid Safety Module		104
12.3 CoHE Pressure Fluid Safety Module - Instructor to Participant Ratio		105
12.4 Equipment for CoHE Pressure Fluid Safety Module		105
12.5 CoHE Pressure Fluid Safety Module Timetable		105
12.6 Detailed Description of the Pressure Fluid Safety Module		107
Lesson 1 - Introducton to the training		107
ELEMENT 1.1 - Safety instrutions and emergency procedures		107
ELEMENT 1.2 - Facilities		108
ELEMENT 1.3 - Introduction		108
ELEMENT 1.4 - Scope and main learning objectives		109
ELEMENT 1.5 - Ongoing assessments (participants assessment form)		109
ELEMENT 1.6 - Motivation		110
ELEMENT 1.7 - Human factors		110
Lesson 2 - Qualified Pressure Fluids Person -requirements and role		112
ELEMENT 2.1 - Role and responsibilities of a Qualified Pressure Fluids Person		112
Lesson 3 - Pressure fluid hazards		113
ELEMENT 3.1 - Hazards of fluids under pressure		114
ELEMENT 3.2 - Trapped pressure and stored energy in a pressure system		115
ELEMENT 3.3 - Circumstances in which oil injection is possible into the human body		116
ELEMENT 3.4 - High temperature fluids in pressure systems		116
ELEMENT 3.5 - Hazards with taking an oil sample		117
ELEMENT 3.6 - Hazards related to pre-charging an accumulator		118
ELEMENT 3.7 - Stored energy hazards related to pre-charge pressure in an accumulator		119
Lesson 4 - PPE		119
ELEMENT 4.1 - HYDRAULIC FLUIDS AND FLUIDS UNDER PRESSURE PPE		120
Lesson 5 - Safe work practices		121
ELEMENT 5.1 - Work instructions		121
ELEMENT 5.2 - Pre-task briefing (Also known as toolbox talks)		122
ELEMENT 5.3 - Pre-use check on pressure fluid test equpment and hoses		124
ELEMENT 5.4 - Test for the absence of pressure		125
ELEMENT 5.5 - Safe isolation and safe dissipation of pressure in a pressure system		125
ELEMENT 5.6 - Component replacement in pressure systems		127
ELEMENT 5.7 - Searching for leaks in a pressurised system safely		128
Lesson 6 - Response to pressure fluid incidents		129
Lesson 7 - Hazardous pressure fluid scenarios		131
Lesson 8 - Training Review		132
ELEMENT 8.1 - Training review		132
ELEMENT 8.2 - Feedback session		133
Annex 1 - Equipment list		135
Annex 2 - Template description for a permit to work		138
Annex 3 - Version History		142

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