A robot noise figure is not a workplace noise assessment

The brochure figure describes emission, not exposure

A robot's declared dB(A) figure can describe machinery emission under a named test without establishing a worker's exposure in the completed application. The result may apply at specified microphone positions, with a particular cycle, payload, mounting and environment, while the workplace adds tools, process contact, peripherals, nearby machines, room reflections and time spent at changing locations.

Preserve the product figure and its conditions as manufacturer evidence. Then assess the integrated workplace and representative tasks using the applicable occupational-noise method and local requirements.

Record exactly what the declared figure means

ABB's current IRB 6730S Revision B specification declares a product noise value measured at four points, one metre beyond the maximum robot working range and 1.5 metres above the base, during a defined VDMA cycle at maximum performance and payload. ABB also says actual application noise depends on path, payload, cycle time, mounting and environment. These are manufacturer claims for the named robot and test, not an independent workplace measurement or worker dose.

• Sound-pressure or sound-power quantity, weighting, averaging or peak metric and any declared uncertainty.
• Microphone distance, height and positions plus the boundary used for the robot's working space.
• Program or test cycle, speed, payload, mounting position, operating mode and environment.
• Whether the controller, cooling equipment, tool, process and other application components were included or excluded.
• Product model, configuration, source document, revision, publication date and verification method for the declaration.

Treat the robot as one source in the complete cell

Universal Robots' current UR20 technical sheet lists a robot noise figure as a product specification. It does not claim to include the application tool, process, other equipment, room acoustics or a worker's time-weighted exposure. The figure remains a UR claim for that product, not a whole-workplace result.

• Robot arm and controller fans, brakes, gear motion and any application-dependent operating states.
• End effector, compressed-air exhaust, vacuum equipment, pumps, welding or machining process and workpiece contact.
• Conveyors, feeders, fixtures, external axes, cooling, extraction, alarms and safety or process signalling devices.
• Adjacent machines and mobile equipment that operate at the same time as the robot cell.
• Guards, enclosures and openings whose position or condition changes propagation and exposure.

People move and tasks change

ISO 11202:2010 covers machinery emission sound-pressure levels at an operator station or other specified nearby positions under defined mounting, operating and environmental conditions. ISO 9612:2025 separately covers occupational exposure, requiring observation and analysis of exposure conditions, measurement strategies and uncertainty. These standards-body scopes establish different evidence questions; their public pages do not supply a universal limit or assess a particular site.

• Normal tending, replenishment, inspection and quality tasks, including where people stand and how long they remain there.
• Teaching, setup, recovery, cleaning and maintenance, which can place people closer to different operating sources.
• Shift pattern, task rotation, simultaneous equipment states and intermittent or peak events.
• Moving workers whose exposure cannot be represented by one fixed area measurement.
• Contractors, visitors and nearby teams whose tasks cross or border the cell's acoustic environment.

Measure representative workplace conditions

NIOSH's current US guidance illustrates why level and duration belong together and recommends measuring typical operating situations, mapping noisy areas and using personal dosimeters where appropriate. Its exposure limit is a US recommendation, not the law for every RobotAtom reader and not a universal RobotAtom acceptance criterion.

• Define applicable jurisdictional criteria, responsible occupational-noise specialist, worker groups, tasks, locations and operating states before measurement.
• Map areas with the relevant equipment running and use personal exposure measurement where a fixed reading cannot represent a worker's movement and duration.
• Capture background noise, reflective surfaces, barriers, doors and enclosure states plus intermittent and peak events where relevant.
• Preserve instruments, calibration, positions, task observations, durations, results, uncertainty, exclusions, deviations and reviewer decision.
• Reassess after material program, speed, load, tool, process, enclosure, layout, adjacent-equipment, staffing or shift changes.

Specify controls and evidence without predicting the result

ISO 4871:1996, confirmed in 2024, covers declaration and verification of machinery noise-emission values. That makes a declaration a defined product claim; it does not convert it into an occupational-exposure assessment.

• Define the acceptance method and applicable criteria rather than assuming that a product figure below a familiar number passes.
• Assign source reduction, isolation, enclosure, absorption, layout, task or scheduling controls to named owners and configurations.
• Test controls in their normal state plus foreseeable open, bypassed-for-authorized-work or maintenance conditions where applicable.
• Keep declared product data, workplace measurements and personal exposure results as different evidence types.
• Record remaining uncertainty and the conditions that require specialist review or new measurement.

Keep every claim inside its evidence boundary

ISO is authoritative for the scope and status of its emission and exposure standards. NIOSH is an authoritative US occupational-health source. ABB and Universal Robots are authoritative for their own declared product specifications. None independently verifies the completed RobotAtom reader's workplace or legal compliance.

RobotAtom can record product declarations, source states, worker tasks and locations, evidence types, applicable criteria, controls, owners and required validation. It does not determine exposure, provide a universal legal limit, certify acoustic safety or establish compliance. The responsible buyer, integrator, employer and qualified occupational specialists must decide what applies and whether the evidence is sufficient.