Co₂ reduction

CO₂ reduction means a demonstrated decrease in greenhouse-gas emissions against a clearly defined baseline. In demolition, deconstruction, rock processing and natural-stone extraction, method selection, energy supply, logistics and material recovery may influence the result. Whether a specific combination of Darda tools and hydraulic power packs reduces emissions must be measured or calculated for the task concerned.

Define the baseline

Every reduction claim needs a reference: which alternative is being compared, what output is delivered and which process steps are included? Suitable functional units may include 1 m³ of reinforced concrete deconstructed or 1 t of rock extracted under comparable conditions. The system boundary, period and data sources must be consistent for the baseline and comparison option.

Potential influencing factors

• energy use and energy source for the carrier, hydraulic power pack and ancillary equipment
• idle time, utilization, operating time and output
• transport distance, vehicle utilization and required rework
• material separation, actual recovery route and demonstrated substitution of primary material
• wear parts, auxiliary materials, maintenance and any ventilation or dust suppression

These factors are potential levers, not evidence of a reduction. Direction and scale of the effect follow only from project-specific data.

Assess tools and methods

Concrete pulverizers, hydraulic rock and concrete splitters, combination shears, Multi Cutters, steel shears and tank cutters perform different tasks. Record energy use, operating time, separation quality and ancillary processes for the same task and compare realistic alternatives. A product claim such as “energy-efficient” or “CO₂-reducing” should not be used without such a comparison.

Electric energy supply

Electric hydraulic power packs produce no direct combustion-exhaust emissions at the point of use. Power demand, operating time, electricity mix and any relevant power-supply processes still determine their greenhouse-gas result. A lower ventilation requirement may be counted only where it has been established for the specific project.

Material separation and recycling

Separated material streams may facilitate higher-quality recovery, but a CO₂ effect does not follow automatically. It depends on material quality, approval, processing route, transport and the actual substitution rate. These factors should be documented and assessed within the selected system boundary.

Evidence and publication

A robust reduction claim identifies the reference method, functional unit, system boundary, calculation method, data date and result. Material conditions and uncertainties should appear in immediate connection with the claim. Reductions in dust, noise or vibration must be assessed separately from climate effects.

Practical checklist

1. Define the reference and work task.
2. Record energy, transport, quantity and material data for both options.
3. Use current recognized emission factors.
4. Report local exhaust, dust, noise and vibration separately.
5. Derive any CO₂ reduction only from a documented comparison.
6. Obtain technical and legal approval before publication.