| Ambient lighting | Measure horizontal illuminance at the work surface and note variation between console positions. | Use a project target of approximately 300–500 lux for routine desk work; provide dimming where operators need lower ambient light for screen-based tasks. | Choose a desk finish that is matte and low-reflectance. Provide controllable, evenly distributed lighting rather than relying on bright fixtures directly above displays. |
| Screen reflections and glare | Inspect display reflections from windows, luminaires, and glossy surfaces from normal seated viewing positions. | Displays should remain readable without distracting reflected images or uncomfortable glare throughout normal operating conditions. | Check console depth, monitor mounting range, and orientation options. Position screens away from direct window reflections and use blinds or suitable glare control where needed. |
| Lighting controls | Check whether lighting can be adjusted by operating zone and whether controls are accessible to staff. | Allow operators to adjust lighting to suit screen viewing, paper tasks, shift changes, and maintenance activities. | Coordinate console zones with lighting-control zones. Avoid layouts where one operator’s lighting adjustment creates glare or poor visibility for others. |
| Background noise | Measure A-weighted sound level (dBA) during representative normal operation and note intermittent sources such as alarms, printers, and ventilation. | As a project screening goal, aim for a steady background near or below 45 dBA where practicable; assess speech intelligibility and alarm audibility in the actual room. | Allow space for acoustic treatment and keep noisy equipment away from operator positions. Verify that desk-mounted equipment does not add distracting fan or vibration noise. |
| Speech and alarm audibility | Test operator-to-operator communication, radio use, telephone calls, and required alarm signals at representative seating positions. | Speech should be understandable without excessive vocal effort, while operational alarms remain clearly distinguishable from routine sound. | Use console arrangements that support clear sightlines and communication. Consider acoustic screens carefully, as they can reduce speech transmission or mask alarms. |
| Air temperature | Record temperature at operator level across occupied positions and during different equipment and occupancy loads. | A typical initial comfort range for evaluation is approximately 20–24 °C; confirm the suitable setpoint with occupants, clothing, activity, and applicable requirements. | Check that the desk does not block supply-air outlets or create stagnant zones. Keep heat-producing equipment and enclosed cable spaces from warming operator areas. |
| Relative humidity | Measure relative humidity during representative seasonal conditions and review any recurring dryness or condensation concerns. | A practical project range is about 40–60% relative humidity, subject to building constraints and local guidance. | Specify materials and equipment suitable for the expected indoor environment. Coordinate console ventilation openings with the room’s heating and cooling strategy. |
| Air movement and drafts | Check for direct airflow on seated operators, especially near supply diffusers, doors, and cooling equipment. | Maintain comfortable air movement without persistent drafts at the head, hands, or legs. | Review the console location against diffuser positions before fixing the layout. Avoid placing operators directly in concentrated supply-air streams. |
| Heat from equipment | Estimate heat from displays, computers, radios, and other devices; inspect temperatures in equipment enclosures during operation. | Keep equipment within its specified operating limits and prevent noticeable heat buildup around the operator’s legs or work surface. | Provide adequate ventilation and accessible cable/equipment compartments. Confirm that the proposed desk configuration does not obstruct cooling airflow or maintenance access. |
| Measurement and validation | Assess conditions at representative seated positions, including the busiest console locations and different operating periods. | Document instruments, measurement locations, operating conditions, results, and any corrective actions. | Use ISO 11064-6 as part of the environmental-design assessment, alongside applicable local requirements and project-specific criteria. Verify conditions after installation and occupancy. |