H2scan BSS Catalog 2025 - Flipbook - Page 38
Conduct a risk assessment to identify potential hazards associated with the battery site. This can help
prioritize safety measures and ensure that appropriate controls are in place.
Implement Safety Measures based on the identi昀椀ed risks. This may include (Fig 3):
Fire safety
Installing 昀椀re suppression systems, providing 昀椀re extinguishers,
and following 昀椀re safety procedures.
Gaseous emissions
Ensuring adequate ventilation to prevent the buildup of hazardous
gases like hydrogen.
Electrolyte leakage
Taking steps to prevent and manage electrolyte spills.
Thermal runaway
Implementing measures to prevent and mitigate thermal runaway,
which can lead to 昀椀res or explosions.
Electrical safety
Ensuring proper grounding, bonding, and circuit protection.
Access control
Restricting access to the battery site to authorized personnel.
Standards Summary for Personal
Protection in the Battery Room
IEC 62485-2 Ed. 1.0 b:2010: Detailed Safety Requirements for Stationary Secondary Batteries provides a
summary of the safety requirements outlined in IEC 62485-2 Ed. 1.0 b:2010 for stationary secondary battery
rooms. These requirements focus on facility and personal safety and are essential for end-users to implement
in their sites. Other standards and codes are referenced in this summary that are applicable to the subject.
Overcharge / Thermal Runaway Protection
(IEC 62485-2 Section 7.6)
Overcharging Protection is required to prevent thermal runaway,
which can lead to increased gas generation, the standard requires
measures to lower the charging voltage or disconnect the charger
under fault conditions.
Gas Generation and Ventilation (IEC 62485-2 Section 7.4)
The standard mandates that hydrogen gas levels in the battery
room must be kept below 4% of the hydrogen in air, which is the
Lower Explosive Limit (LEL) threshold. The ventilation requirement
is to account for the hydrogen produced from the max current
available from the charger.
90000266
pg.38
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