Grounding and bonding are the two techniques that keep static electricity, generated wherever liquids flow, powders slide, belts run, and films unwind, from accumulating until it discharges as a spark. In flammable atmospheres that spark is an ignition source as real as a torch, and unlike a torch, it is invisible, silent, and carried into the hazard by the process itself.
Bonding connects two conductive objects so they share the same potential, no spark can jump between them. Grounding connects the bonded system to earth so accumulated charge drains away. A drum bonded to a receiving vessel but not grounded can still charge as a pair; a grounded vessel receiving from an unbonded drum still invites the spark at the moment of approach. Safe transfer needs both.
Transferring 200 liters of acetone from a drum to a mixing vessel: the drum sits on a plastic spill pallet (insulated), the vessel is grounded plant equipment, and the transfer runs through a hose with a metal nozzle. Safe setup: bonding clamp from drum to vessel, ground connection verified from the vessel system to the grounding network, and a conductive or dissipative hose with continuity checked, three connections, none optional. Skip the drum bond and calculation says the drum can reach discharge-capable potential within the first minutes of flow; the spark arrives exactly when the nozzle approaches the vessel through an acetone vapor zone. The clamps cost seconds; the alternative is a classic flash-fire report.
Fabrico does not design earthing systems or set flow limits; electrical and process safety engineers do. It keeps the physical program alive: grounding points and static-control hardware in the asset register, continuity and resistance tests as recurring work orders with recorded values, defective clamps and cables flagged and replaced through prioritized work, and the test history ready for the ATEX or insurance audit. EU-built, with EU data residency.
Fixed earthing points and static grounding systems are commonly resistance-tested annually, with portable bonding cables and clamps checked far more often, many sites verify continuity before each use for critical transfers, plus a scheduled inspection cycle. Frequency should come from the risk assessment, then live in the maintenance system.
They reduce charge generation and accumulation but rarely replace bonding and grounding for conductive equipment; they are supporting controls. Where an assessment credits them, the conditions (additive concentration, humidity band) become parameters to verify, not assumptions to remember.
In zoned areas, personnel grounding matters: dissipative footwear and flooring, verified periodically with a tester at the entry point. A charged operator reaching for a valve is the same physics as an unbonded drum, just with shoes.
Want continuity tests, clamp inspections, and earthing records on a schedule that keeps itself? Book a Fabrico demo to see static-control discipline run through a field-ready CMMS.
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