Arc flash accident at work: NSW workers compensation guide

Arc flash accident at work can occur through an electrical fault forming an arc across conductors and switching, testing or tool contact triggering an energy release. The incident history should identify the task, equipment, location and sequence of events rather than relying on the job title alone.

People commonly exposed include electricians and electrical engineers working on switchboards and maintenance and utility workers near energised equipment. Employment records should identify each person's task, employer and position in the work area when the incident occurred.

Medical records after a arc flash accident at work may identify burns injury and eye injury. Each diagnosis should be linked to the event or exposure and to the worker's actual functional change.

After a arc flash accident at work, immediate reporting and safety records may include switchboard state, task, isolation and switching records and fault, relay, protection and maintenance data. These records can establish what was known at the time without requiring the worker to repeatedly recount a traumatic event.

• PPE retained for inspection and SafeWork notification records where applicable.
• If the facts may meet the WHS Act definition of a notifiable incident, the SafeWork notification reference, inspector correspondence and scene records, without delaying emergency assistance or other action permitted by section 39.

For a arc flash accident at work, the first evidence to preserve includes single-line diagrams, arc-risk study and equipment history and test instruments, damaged components, photographs and witnesses. It is most useful when dates, people, equipment, duties and later medical histories tell a consistent account.

• Hearing, eye, burns, respiratory and psychological clinical records.
• Records of any blast fall or secondary impact.

Medical and psychological evidence after a arc flash accident at work may include first-aid, ambulance and early clinical histories describing the arc flash accident at work sequence and diagnosis-specific examination, imaging and specialist evidence for burns injury, eye injury, hearing loss, tinnitus. A diagnosis alone may not answer causation or capacity: the records should explain the work event, symptoms, treatment and practical restrictions.

• Certificates of capacity stating functional restrictions, hours and treatment rather than only a diagnosis.
• Operative, rehabilitation and psychological records where the event caused surgery, prolonged recovery or trauma symptoms.

After a arc flash accident at work, an insurer may dispute whether symptoms arose from heat, light, pressure, sound, smoke or a secondary fall and whether hearing, vision and psychological effects were identified early. The written decision should be answered with evidence directed to those stated reasons.

Burns, eye and hearing injuries require different specialists and should not be collapsed into one diagnosis. Psychological treatment may be relevant after a sudden flash and blast exposure. If treatment is disputed after a arc flash accident at work, the request should explain the accepted diagnosis, expected functional benefit and reasonable alternatives.

Work capacity after a arc flash accident at work may turn on energised equipment, switching, visual demands, hearing protection and concentration and whether de-energised duties or a different environment can accommodate restrictions. Proposed duties must be compared with the real task demands and the worker's ability to sustain them for the proposed hours.

WPI may involve skin, vision, hearing, neurological or primary psychological methods; the presence of an arc does not create a fixed rating. The accident mechanism, surgery, imaging finding or pain report alone does not establish a WPI percentage. Any WPI assessment after a arc flash accident at work occurs after stabilisation under the NSW method for the accepted body system; the accident or surgery alone does not determine a percentage.

Equipment manufacturer, maintainer or site electrical controller issues may require separate investigation. Any separate occupiers-liability, product, TPD or work injury damages issue is distinct from statutory workers compensation and depends on its own evidence and legal criteria. These issues are separate from workers compensation and depend on the particular facts.

For a arc flash accident at work, assistance may involve separate the arc flash accident at work mechanism from the diagnoses and identify any missing incident record and compare the insurer’s written reasons with medical, treatment and work-capacity evidence. The purpose is to identify the disputed decision and the evidence needed for the next step, not to promise an outcome.