Regional OSHA activity and compliance publications over the past month highlight renewed inspection scrutiny surrounding flammable liquid transfer, storage, and bonding/grounding:
Storage Cabinet Capacity Limits:
Re-emphasizing standard limits under 29 CFR 1910.106(d)(3):
- Maximum 60 gallons total for Categories 1, 2, or 3 flammable liquids per approved cabinet.
- Maximum 120 gallons for Category 4 combustible liquids (only if zero Categories 1–3 are stored inside).
Vent Expansion Guidance:
Clarification issued on factory bungs vs. active mechanical ventilation. OSHA reiterates that venting cabinets is generally not recommended unless ducted directly outdoors via spark-resistant fans with UL-listed fusible links, to avoid undermining the cabinet’s fire-rating envelope during an incident.
Bonding & Grounding Violations
Increased general industry emphasis during regional chemical and warehousing inspections regarding liquid transfers in quantities >5 gallons. Inspecting officers continue targeting static ignition controls, liquid-tight 4-inch sills on dedicated storage rooms, and electrical classification within 20 feet of dispensing stations.