Reducing the risk

TAS recently presented to safety and compliance managers at the annual IOSH Conference in Telford. Below is a summary of its non technical arc flash presentation.

If you have an HV or LV system you could be at risk of an electrical arc flash - To reduce the risks of an arc flash:

• Wherever possible, try to eliminate a worker away from the possibility of a burn.
•  Imperative! Update and document your systems.
•  For new investments implement a remote switching system.
•  Engineer issues out - Identify fault level studies, load flow analysis, set protection gradings, conduct arc flash study, update all distribution system records.
•  Eliminate pre identify risks, implement procedures and label equipment correctly.
•  Mitigate (moderate dangers to make them less severe) - via procedures and training.
•  Calculate thermal values required & protect with relevant levels of FR PPE
•  PPE - The last line of defence!. Make sure PPE is CE marked.

Standards & Guidelines :-

• E.A.W.R. 1989 (section 5) compliance
• IEEE 1584 - Standard for Arc Flash Calculations
• IEC 60909 - Electrical Fault Level Studies & Load Flow Analysis
• HSG 230 - Electrical Switchgear Safety

Tel Switchboard 01642 613622

Fax 01642 616480

Email: mailto:Beverley.Rose@tas.co.uk

http://www.tas.co.uk/