Operations training
High Voltage Standard / V0 - DRAFT 2025-03-21
a.
Applying LOTO - locks and warning signs
b. Verification of absence of voltage / Proving dead / Zero energy
c. Interlocks as control, including Trapped Key Switches
d.
Circuit Main Earthing
e.
Portable Earthing, tools and equipment:
f.
Mechanical Isolations and Low Voltage Isolations
Explain and illustrate other hazard sources such as:
a.
stored energies
b.
thermal
c.
chemical
d.
radiation
e.
inductance
The participants shall:
Observe, discuss and ask questions about applying HV isolations and earth safely in HV environments
ELEMENT 13.2 - SCENARIO BASED PRACTICAL ACTIVITIES - HV ISOLATIONS AND EARTH
HV isolations and earth scenarios should be developed to include operations proceeding as expected and a range of unexpected issues with equipment and processes, and how to act in those situations.
Note
Ideally the scenarios should where possible be based on case studies, incident reports and other relevant real-world examples from the industry.
HV isolations and earth exercises should if possible be integrated with the HV switching scenarios as appropriate, depending on the available equipment used for each exercise.
Thus, time allocated for scenario-based exercises in Lessons 11, 12, 13 and 14 can be combined or divided to provide opportunities to integrate switching, isolation, proving, earthing and testing exercises into coherent scenarios based in real-world work tasks.
Global Wind Organisation / www.globalwindsafety.org
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