Unithium

Safety by Design: HSE Protocols for High-Voltage Energy Deployments

Engineer performing a Risk Assessment on a power station unit using PPE

At Unithium Energy Systems, our HSE (Health, Safety, and Environment) framework is integrated directly into the engineering phase, not added as an afterthought. High-voltage energy systems present unique risks, including electrical shock, Arc Flash, and thermal incidents, all of which require a 'Safety by Design' philosophy to mitigate.

The primary technical hazard in high-capacity power stations is the Arc Flash. We model the Incident Energy (EiE_i) at the working distance to determine the appropriate Personal Protective Equipment (PPE) Category. This is calculated using the IEEE 1584 standard:

Ei=4.184CfEn(t0.2)(DnX)E_i = 4.184 \cdot C_f \cdot E_n \cdot \left(\frac{t}{0.2}\right) \cdot \left(\frac{D^n}{X}\right)

Where EnE_n is normalized incident energy and tt is the arcing time. By utilizing ultra-fast clearing fuses and current-limiting circuit breakers, we reduce the duration of a potential fault, ensuring that our systems remain within a manageable safety envelope for operators.

Operational safety is maintained through strict Lock-Out Tag-Out (LOTO) protocols. Every Unithium unit is engineered with visible-break disconnects and designated earthing points. This ensures that during maintenance, the 'Zero Energy State' can be verified mathematically and physically, preventing accidental re-energization of the DC bus or AC output stages.

Beyond electrical safety, our environmental protocols focus on the containment and lifecycle of hazardous materials. Although LiFePO4 is non-toxic compared to lead-acid, we implement secondary containment systems for large-scale BESS installations to manage potential electrolyte leakage. We also adhere to the 'hierarchy of controls' to eliminate hazards at the source by designing recessed terminals and touch-safe enclosures (IP65 rated or higher).

Finally, our incident management system leverages the AI-driven monitoring built into our units. By logging 'Near-Miss' electrical transients or thermal anomalies, we can perform Root Cause Analysis (RCA) before a safety boundary is breached. This data-driven HSE approach ensures that reliability and safety are two sides of the same engineering coin.