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Technical Advisory

Flammability studies, dangerous goods classification, GHS/CLP, SDS review, expert witness and turnkey safety project management — specialist support for complex safety challenges.

Technical Advisory

Specialist Expertise. Practical Guidance.

Process safety and chemical safety compliance requires deep, specialist knowledge that most organisations cannot maintain in-house across every discipline. Nexis PS acts as an extension of your team — providing targeted technical advisory services across flammability characterisation, dangerous goods logistics, regulatory compliance requirements and independent expert opinion.

Our advisory services are built around real-world regulatory submissions, litigation support and operational problem-solving, ensuring that advice is not only technically sound but practically implementable.

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Advisory Services

  • Flammability & Explosibility Testing Interpretation
  • Dangerous Goods Classification (ADR / SANS 10228 / IATA / IMDG)
  • GHS / CLP Hazard Classification
  • Safety Data Sheet (SDS) Authoring & Review
  • Regulatory Gap Analysis & Compliance Roadmaps
  • Expert Witness & Incident Investigation
  • PSSR 2000 Pressure Systems Compliance
  • Turnkey Safety Study Project Management
  • Process Safety Due Diligence (M&A)
  • Competency Training & Mentoring
Flammability & Explosibility

Understanding the Burning & Explosion Behaviour of Your Materials

Knowing the fundamental flammable and explosive properties of the substances you handle, process or store is the first step in managing the associated hazards. Nexis PS interprets testing data and applies it to specific operational scenarios.

Flammable Liquids & Gases

  • Flash point measurement and classification (GHS / SANS / IATA)
  • Autoignition Temperature (AIT) determination
  • Lower and Upper Flammable Limit (LFL / UFL) evaluation
  • Burning velocity and deflagration index (Kg)
  • Vapour pressure at storage temperature assessment

Combustible Dusts

  • Kst and Pmax (maximum rate of pressure rise and explosion pressure)
  • Minimum Explosible Concentration (MEC)
  • Minimum Ignition Energy (MIE)
  • Minimum Ignition Temperature (MIT) — cloud and layer
  • Limiting Oxygen Concentration (LOC) for inerting design

Data Application

  • Hazardous area classification input validation
  • Relief vent sizing basis development
  • Suppression and isolation system design basis
  • Storage and transport classification
  • SDS / GHS classification input
Dangerous Goods Classification & Compliance

Road, Rail, Air and Sea — Compliant for Every Mode

The transport of dangerous goods is tightly regulated across all modes. Incorrect classification or inadequate documentation creates legal liability, customs delays and serious safety risks. Nexis PS provides accurate DG classification and complete documentation packages.

Classification

  • UN Class assignment (Classes 1–9 including divisions)
  • Proper Shipping Name (PSN) determination
  • Packing Group (I, II, III) classification
  • Special provisions and limited quantities assessment
  • Mixture classification where test data is unavailable

Documentation

  • Dangerous Goods Declaration preparation (all modes)
  • Emergency Response Cards (ERC / TREM cards)
  • Multimodal Dangerous Goods Form
  • ADR driver instructions (Written Instructions)
  • Marking, labelling and placarding requirements review

Applicable Regulations

  • ADR (European Agreement on Road Transport)
  • SANS 10228 (South African Road Transport)
  • IATA DGR (Air Transport)
  • IMDG Code (Sea Transport)
  • RID (Rail Transport)
GHS / CLP Classification & Safety Data Sheets

Accurate, Legally Defensible Product Safety Communication

GHS / CLP Classification

We classify chemical products under the Globally Harmonised System (GHS) and the EU Classification, Labelling and Packaging Regulation (CLP) using substance data, mixture rules and bridging principles.

  • Physical hazard classification (flammable, explosive, oxidising, etc.)
  • Health hazard classification (acute toxicity, CMR, STOT, etc.)
  • Environmental hazard classification (aquatic, ozone depletion)
  • Label element derivation (pictograms, signal word, H- and P-statements)

Safety Data Sheet Services

SDS authoring and review services covering REACH-compliant 16-section SDS and SANS 11014 (South Africa). We also provide SDS gap analysis and gap remediation for existing product portfolios.

  • Full 16-section SDS authoring for new products
  • SDS review, update and gap remediation
  • REACH, CLP and SANS 11014 compliance verification
  • Exposure scenario authoring
  • Multi-language SDS translation quality review
Expert Witness & Project Management

Expert Witness

Nexis PS provides independent expert opinion for litigation, arbitration, regulatory enquiries and insurance claims involving industrial fires, explosions, chemical incidents and process safety management failures.

  • Incident root cause analysis (RCA)
  • Expert report preparation meeting CPR 35 (UK) or equivalent standards
  • Joint expert and hot-tubbing experience
  • Regulatory enquiry support (HSE, DMRE, SAHPRA)
  • Insurance loss investigation support

Turnkey Safety Project Management

For clients who need a complete safety study programme — from initial scoping through to regulatory submission — Nexis PS can manage the entire programme, coordinating multi-discipline inputs and delivering a coherent, integrated safety case.

  • Study scope definition and resource planning
  • Multi-discipline contractor coordination
  • HAZOP / QRA / HAC / PSM study programme scheduling
  • Regulatory submission preparation and management
  • Safety case document control and version management

Ready to Work With Nexis PS?

Talk to our process safety specialists today. We'll tailor a solution to your hazard profile, regulatory context, and operational goals.

Process Safety Specialists
SANS / IEC / ISO Expertise
Africa-Wide Coverage
24h Response Guarantee