Chemical Safety Evaluation & Testing

Reactive Chemical Screening & Reactivity Testing

Screening test programmes for reactive hazard characterisation

What this study delivers

Reactive Chemical Screening
& Reactivity Testing

Reactive screening test programmes evaluate exothermic potential, water reactivity, and incompatibility through structured laboratory protocols. Results feed safe handling decisions, storage segregation, and process design margins.

Reactive Chemical Screening & Reactivity Testing — Overview
Study execution

How the study is executed

A structured, facilitated process — from scope definition through close-out — producing defensible, actionable outputs.

Literature & Structural Screening

Conduct literature screening per CCPS Reactive Chemicals — Bretherick's Handbook, Yoshida structural alerts, NOAA Chemical Reactivity Worksheet; identify reactive functional groups (peroxide, azide, nitro, diazo, acetylide, fulminate).

CHETAH Calculations

Apply CHETAH (Chemical Thermodynamic and Energy Hazard) algorithm — calculate maximum decomposition heat (ΔHdec), oxygen balance, and energy release index; align with ASTM CHETAH protocol and CCPS guidance.

DSC Thermal Screening

Conduct DSC per ASTM E537 / E2046 with controlled atmosphere (N₂ / air / O₂) — temperature ramp 5-10°C/min; identify exothermic onset, peak, and energy release; align with EFCE / IChemE screening protocol.

Compatibility Screening

Conduct binary compatibility screening for each material pair in intentional contact or credible mixing scenarios; align with OSHA PSM Process Safety Information / CCPS Inherent Safer Reactive Hazard avoidance.

Hazard Classification & Risk Ranking

Classify material per Stoessel scenario class (1-5) and CCPS Reactive Chemicals hazard tier; risk-rank for further testing (calorimetry, RC1 reactor, vent sizing); align with OSHA PSM Reactive Hazard programme.

Screening Report & Programme Integration

Compile reactive screening dossier with literature review, CHETAH output, DSC trace, compatibility matrix; integrate with Reactive Hazard Programme, HAZOP / SIL allocation, and OSHA PSM Process Safety Information.

Reactive Chemical Screening & Reactivity Testing — Scope
Study scope

What the study covers in full

DSC and ARC screening protocols
Water reactivity (Bretherick) testing
Mixing incompatibility testing
Drop-weight and impact sensitivity
Self-heating and storage stability
Reactive hazard ranking matrix
Safe handling recommendations
Why it matters

Outcomes of Reactive Chemical Screening & Reactivity Testing

Reactive Chemical Hazard Identification
  • Identifies reactive hazards before they cause incidents
  • Defines safe handling and storage conditions
  • Drives MOC for new chemical introductions
  • Supports incident investigation forensics
OSHA PSM / AIChE DIERS Screening Defence
  • Aligns with CCPS reactive chemical guidance
  • Supports OSHA PSM reactive hazard programmes
  • Documents UN classification basis
  • Holds up under regulator audit
Material Compatibility & Storage Planning
  • Hardens chemical introduction MOC
  • Improves storage segregation discipline
  • Reduces inadvertent-mixing incidents
  • Supports operator training on reactive risk
Reactive Incident & Recall Prevention
  • Avoids catastrophic reactive incidents
  • Reduces insurance loadings on reactive inventories
  • Targets segregation capex
  • Supports safer chemical substitution decisions
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