1 Table of contents 163

Draft HV Standard Installation & Maintenance Modules

Public Hearing document for the draft HV Standard Installation & Maintenance Modules

1. List of Abbreviations		5
2. Terms and Definitions		6
3. Change Log		10
4. Scope		10
5. General requirements for the High Voltage Standard		10
5.1 Overview		11
5.2 Target Groups		11
5.3 Aims and Objectives		11
5.4 Duration of the High Voltage Standard Modules		12
5.5 Validity Period		13
5.6 Course Codes		14
5.7 Participant Prerequisites		14
5.8 Instructor Qualification Prerequisites		15
6. Using this Standard to Develop Training		16
6.1 Lesson planning		16
6.2 Participant Performance Assessment		17
6.3 Alignment References		17
7. High Voltage Operations		20
7.1 Aims and objectives for the High Voltage Operations Module		20
7.2 Generic approach to High Voltage Operations training and the need for company specific development		20
7.3 Progression following completion of GWO High Voltage Operations Module		20
7.4 Duration of the High Voltage Operations Module		21
7.5 Instructor to Participant Ratio for High Voltage Operations Module		21
7.6 Equipment for the High Voltage Operations Module		21
7.7 Timetable for the High Voltage Operations Module		22
7.8 Detailed Description of the High Voltage Operations Module		24
Lesson 1 - Module introduction		24
ELEMENT 1.1 - Safety instructions and emergency procedures		25
ELEMENT 1.2 - Facilities		25
ELEMENT 1.3 - Introduction		26
ELEMENT 1.4 - Aim and objectives		26
ELEMENT 1.5 - Ongoing and summative assessments		27
ELEMENT 1.6 - Motivation		27
Lesson 2 - Human factors, safety mindset and attitude		28
ELEMENT 2.1 - The role of human factors in safe operations		28
ELEMENT 2.2 - Holistic integration of human factors into all topics		29
Lesson 3 - Wind farm HV energy systems and equipment		31
ELEMENT 3.1 - HV systems in the wind farm from WTG to grid		31
ELEMENT 3.2 - Definition and designations of HV		32
ELEMENT 3.3 - HV equipment and technologies overview		32
ELEMENT 3.4 - Circuit Breakers, Disconnectors, Earth Switches		33
ELEMENT 3.5 - Using Single Line Diagrams		34
ELEMENT 3.6 - Hazards and safety of HV versus LV		35
ELEMENT 3.7 - Environmental conditions affecting HV versus LV		35
Lesson 4 - Hazards and risks awareness in HV Environments		36
ELEMENT 4.1 - Hazards, risks and controls when working with HV equipment		36
ELEMENT 4.2 - Basement housed HV equipment		38
ELEMENT 4.3 - HV cable hazards and risks		38
ELEMENT 4.4 - Earthing protection		39
ELEMENT 4.5 - Operating under different conditions		39
ELEMENT 4.6 - Recognising signs of deranged or in distress equipment		40
Lesson 5 - Safety and control measures in HV environments		41
ELEMENT 5.1 - Five Basic Safety Rules / The Golden Five Rules		41
ELEMENT 5.2 - Establishing an Electrically Safe Work Condition		42
Lesson 6 - Regulations, guidelines and company HV rules		43
ELEMENT 6.1 - Legislation, industry standards and guidelines, company rules for HV work		43
Lesson 7 - SSOW for HV operations and communications		44
ELEMENT 7.1 - SSOW for HV operations		44
ELEMENT 7.2 - Effective communications in HV Operations		46
Lesson 8 - Duties, roles and responsibilities for HV operations		46
ELEMENT 8.1 - Duties, roles and responsibilities for HV operations		47
Lesson 9 - Tools and PPE for High Voltage working		47
ELEMENT 9.1 - Typical HV tools, functions, safe use and control		48
ELEMENT 9.2 - PPE for high voltage working		49
Lesson 10 - Fundamentals and principles for operating High Voltage systems under a SSOW		49
ELEMENT 10.1 - Roles and responsibilities in controlled HV environment		50
ELEMENT 10.2 - Applying the Five Safety Rules / The Golden Five		51
ELEMENT 10.3 - Documentation to ensure safe control of HV Operations		52
ELEMENT 10.4 - Executing work under documents written by an SAP		53
Lesson 11 - HV Switching: Scenario based practical activities		54
ELEMENT 11.1 - Safe Practices and Principles of switching including team communications and the Hierarchy of Switching		54
ELEMENT 11.2 - Performing initial energisation at commissioning and reenergisation following repairs		56
ELEMENT 11.3 - Working with remote operation centre / stations		57
ELEMENT 11.4 - Carry out actions within a HV safety document or switching orders		58
ELEMENT 11.5 - Identify critical to safety intervention points and notify appropriate authorities of improper operation		59
ELEMENT 11.6 - Scenario based practical activities - HV Switching		60
Lesson 12 - Tools, equipment and methods for confirming Absence of Voltage		61
ELEMENT 12.1 - HV tools and PPE for confirming absence of voltage		61
ELEMENT 12.2 - Methods for confirming absence of voltage - Primary and secondary, or additional methods		62
ELEMENT 12.3 - Prove - Test - Prove / Hot - Cold - Hot		63
Lesson 13 - Applying HV Isolations and Earth		64
ELEMENT 13.1 - Applying HV Isolations and Earth		65
ELEMENT 13.2 - Scenario based practical activities - HV Isolations and earth		66
Lesson 14 - Safe control during HV testing		67
ELEMENT 14.1 - Sanction for test		67
ELEMENT 14.2 - Awareness of testing types, tools, equipment and associated devices		69
ELEMENT 14.3 - Safe control of HV equipment during testing activity		70
ELEMENT 14.4 - Scenario based practical activities - HV testing		71
Lesson 15 - Written knowledge test		72
ELEMENT 15.1 - Assessment of knowledge by written test		72
Lesson 16 - Training review		73
ELEMENT 16.1 - Training review		73
ELEMENT 16.2 - Feedback session		74
ELEMENT 16.3 - HV Operations - Personal Experience Logbook		74
8. High Voltage Cable Pulling		77
8.1 Aims and objectives of the High Voltage Cable Pulling Module		77
8.2 Duration of the High Voltage Cable Pulling		77
8.3 Instructor to Participant Ratio for the High Voltage Cable Pulling Module		77
8.4 Equipment Requirements of the High Voltage Cable Pulling Module		78
8.5 Timetable of the High Voltage Cable Pulling Module		78
8.6 Detailed Description of the High Voltage Cable Pulling Module		79
Lesson 1 - Module introduction		79
ELEMENT 1.1 - Safety instructions and emergency procedures		80
ELEMENT 1.2 - Facilities		80
ELEMENT 1.3 - Introduction		81
ELEMENT 1.4 - Aim and objectives		81
ELEMENT 1.5 - Ongoing assessments		82
ELEMENT 1.6 - Motivation		82
ELEMENT 1.7 - Human factors		83
Lesson 2 - Awareness of basic HV cable theory		84
ELEMENT 2.1 - Understanding what happens to a cable when it is pulled		85
ELEMENT 2.2 - Different HV cable types, applications and specifications		86
ELEMENT 2.3 - Cable construction from core to outer layer		87
ELEMENT 2.4 - Awareness of basic electrical field theory		87
ELEMENT 2.5 - Awareness of HV cable testing		88
Lesson 3 - Breakout inspections		88
ELEMENT 3.1 - Breakout inspection key points		89
ELEMENT 3.2 - Recognising a good and bad breakout		90
ELEMENT 3.3 - Reporting any problems		91
Lesson 4 - Cable inspection		92
ELEMENT 4.1 - Inspecting the cable for damage during pulling operations		92
Lesson 5 - Safe working during HV cable pulling operations		93
ELEMENT 5.1 - Safe work practices and effective team coordination		93
ELEMENT 5.2 - Hazard awareness and mitigation		94
Lesson 6 - Preparation of HV cable, equipment and tools		97
ELEMENT 6.1 - Preparation and protection of HV cable		97
ELEMENT 6.2 - Preparation of equipment and tools		98
Lesson 7 - Handling the HV cable		100
ELEMENT 7.1 - Installation of cable socks		100
ELEMENT 7.2 - HV cable handling and stress control		101
Lesson 8 - Conducting the cable pulling operation		103
ELEMENT 8.1 - How to pull a HV cable - methods and techniques		103
ELEMENT 8.2 - Attention during cable pulling - do's and don'ts		104
Lesson 9 - Completing the cable pull		105
ELEMENT 9.1 - Cable fastening		105
ELEMENT 9.2 - Installation of the cable loop in tower and walk down inspection		106
Lesson 10 - Training review		107
ELEMENT 10.1 - Training review		107
ELEMENT 10.2 - Feedback session		107
9. High Voltage T-Connector Installation		110
9.1 Aims and objectives of the High Voltage T-Connector Installation Module		110
9.2 Duration of the High Voltage T-Connector Installation Module		110
9.3 Instructor to Participant Ratio for the High Voltage T-Connector Installation Module		110
9.4 Equipment Requirements of the High Voltage T-Connector Installation Module		111
9.5 Timetable of the High Voltage T-Connector Installation Module		111
9.6 Detailed Description of the High Voltage T-Connector Installation Module		112
Lesson 1 - Module introduction		112
ELEMENT 1.1 - Safety instructions and emergency procedures		113
ELEMENT 1.2 - Facilities		113
ELEMENT 1.3 - Introduction		114
ELEMENT 1.4 - Aim and objectives		114
ELEMENT 1.5 - Ongoing assessments		115
ELEMENT 1.6 - Motivation		115
ELEMENT 1.7 - Human factors		116
Lesson 2 - HV Cable, Connectors & Components		117
ELEMENT 2.1 - HV cable types, applications, specifications		118
ELEMENT 2.2 - HV Separable Connectors & components		119
ELEMENT 2.3 - Surge Arrestors, other accessories and Tools		119
ELEMENT 2.4 - Awareness of basic electrical field theory		120
Lesson 3 - Inspection, Cleaning & Preparation of T-Connectors		121
ELEMENT 3.1 - HV cable and breakout inspection		121
ELEMENT 3.2 - T-Connectors inspection, cleaning & preparation		122
ELEMENT 3.3 - Recognising Critical-to-Quality aspects of equipment		123
ELEMENT 3.4 - Reporting any problems		124
Lesson 4 - Guided Practical Installation Session		125
ELEMENT 4.1 - Work instructions for cleaning, preparing and installation		125
Lesson 5 - Installation Safe Working Practice Session		126
ELEMENT 5.1 - Applying work instructions for inspection, cleaning, preparation and installation of T-Connectors and surge arrestors		126
Lesson 6 - Summative Assessment Practical Installation		127
ELEMENT 6.1 - Practical assessment: Applying work instructions for inspection, cleaning, preparation and installation of T-Connectors		128
Lesson 7 - Training review		129
ELEMENT 7.1 - Training review		129
ELEMENT 7.2 - Feedback session		129
10. High Voltage Transformer Maintenance		131
10.1 Aims and objectives of the HV Transformer Maintenance Module		131
10.2 Duration of the HV Transformer Maintenance Module		131
10.3 Instructor to Participant Ratio for the HV Transformer Maintenance Module		131
10.4 Equipment Requirements of the HV Transformer Maintenance Module		132
10.5 Timetable of the HV Transformer Maintenance Module		132
10.6 Detailed Description of the HV Transformer Maintenance Module		133
Lesson 1 - Module introduction		133
ELEMENT 1.1 - Safety instructions and emergency procedures		133
ELEMENT 1.2 - Facilities		134
ELEMENT 1.3 - Introduction		134
ELEMENT 1.4 - Aim and objectives		135
ELEMENT 1.5 - Ongoing assessments		135
ELEMENT 1.6 - Motivation		136
ELEMENT 1.7 - Human factors		137
Lesson 2 - Safe working with HV Transformers		138
ELEMENT 2.1 - HV transformer types, features, components and consequences of maintenance failures		138
ELEMENT 2.2 - Inspection routines and preventative maintenance tasks		139
ELEMENT 2.3 - Maintaining safe conditions for work, hazard awareness and mitigation		141
Lesson 3 - Routine inspection and maintenance practical		142
ELEMENT 3.1 - Routine inspection and maintenance		142
Lesson 4 - Inspection and Maintenance: Summative Assessment		144
ELEMENT 4.1 - Practical Assessment: Applying work instructions for routine inspection and fault identification scenarios		144
Lesson 5 - Training review		146
ELEMENT 5.1 - Training review		146
ELEMENT 5.2 - Feedback session		146
Annex 1 - Equipment list		148
Annex 2 - HV Operations - Personal Experience Logbook		153
Annex 3 - Alignment references		154
Annex 4 - Guidline for warm-up exercises		156
Annex 5 - Version History		163

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