Skip to content

EngineerHub.org

EngineerHub category // Environmental & Safety

Environmental & Safety Engineering

Screen environmental loads and safety conditions including ventilation, water balance, stormwater, dewatering, noise, oxygen depletion and thermal discharge.

11 calculator / tools1 interactive simulator2 case studys14 pages total

These tools support preliminary environmental and safety screening across air, water and workplace hazards. The collection includes stormwater and water-balance calculations, dewatering, thermal discharge, noise, ventilation and oxygen-depletion models, plus selected radiation and process-safety tools. Regulatory compliance still requires the applicable site data, standards and professional judgement.

Choose a tool below by purpose. Individual pages include their own assumptions, equations, references and limitations where applicable.

Calculators & tools

11 pages

Battery-Room Hydrogen Ventilation CalculatorEstimate hydrogen generation from stationary aqueous batteries and calculate battery-room exhaust ventilation, air changes, accumulation time, and existing-ventilation concentration.Calculator / tool→Building Material Radiation CalculatorCalculate activity concentration index, gamma dose rate, annual dose and hazard indices from Ra-226, Th-232 and K-40 in Bq/kg or pCi/g.Calculator / tool→Cooling-Tower Visible-Plume PredictorPredict whether warm, moist cooling-tower exhaust can form a visible condensation plume when mixed with ambient air. Includes a psychrometric mixing plot and SI/US units.Calculator / tool→Excavation Dewatering Screening ModelScreening-level estimate of groundwater inflow to an excavation using Sichardt's radius-of-influence formula combined with the Dupuit (unconfined) or Thiem (confined) equations.Calculator / tool→Noise Attenuation CalculatorEstimate sound-pressure level with distance for point or line sources, optional atmospheric absorption, and logarithmic addition of multiple independent noise sources in SI or US customary…Calculator / tool→NORM Worker Dose CalculatorEstimate annual NORM worker dose from external gamma, radioactive dust inhalation, radon progeny and ingestion, with mSv or mrem results.Calculator / tool→Pond Evaporation & Water Balance ToolCalculate pond evaporation from pan evaporation data using the standard pan-coefficient method, and work through a full water balance to size makeup water or refill requirements.Calculator / tool→Radon Dose Calculator — Bq/m³ to mSvConvert indoor radon from Bq/m³ or pCi/L into estimated annual effective dose in mSv or mrem using occupancy and equilibrium factor.Calculator / tool→Rainfall Runoff CalculatorEstimate peak stormwater runoff with the Rational Method and calculate event runoff volume from rainfall depth, catchment area and runoff coefficient.Calculator / tool→Stormwater Storage CalculatorEstimate preliminary stormwater detention storage from rainfall depth, catchment area, runoff coefficients, controlled discharge and contingency.Calculator / tool→Thermal Discharge Complete-Mixing CalculatorCalculate complete-mixing water temperature, thermal load, dilution, and required receiving flow for a heated discharge entering a defined water flow.Calculator / tool→

Interactive simulators

1 page

Oxygen Depletion & Cryogenic Spill SimulatorSimulate oxygen depletion after a liquid nitrogen, argon, or helium spill in a ventilated room using a transient well-mixed mass-balance model.Interactive simulator→

Case studies

2 pages

Deepwater Horizon — Well Control SimulatorInteractive Deepwater Horizon and Macondo well-control case study: negative-pressure test, mud displacement, kick detection, BOP response, blowout sequence and lessons learned.Case study→Maeslantkering Storm Surge BarrierInteractive engineering case study of the Maeslantkering storm surge barrier near Rotterdam: closure sequence, load path, 10 m ball joints, automatic control, reliability, maintenance,…Case study→