Welcome to Sigma-HSE

Leader in Process Safety Consultancy


Welcome to Sigma-HSE

ISO 17025 Certified Process Safety Laboratory


Welcome to Sigma-HSE

Experts in Process Safety Training


Process Safety Services

We are at the forefront of Process Safety support, we offer cost-effective solutions to get your business compliant in a timely manner.


A Passion for Safety

Based in Winchester and with offices in India and the Middle East, we provide laboratory and consultancy services to the process industries. Working to ISO/IEC 17025: 2017 our laboratory generates test data on the flammability, explosivity and thermal reactivity of dusts, gases, vapours and substances. Our Process Safety Consultants provide a wide range of specialist technical safety services including Process Safety Management, DSEAR / ATEX, Comprehensive Safety Audits, HAZOP, HAC, Vent Sizing, Chemical Reaction Evaluation, Training, and incident investigation.
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Industries We Serve

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Project Case Studies

Pharmaceutical Industry - HAZOP

HAZOP study was completed for solvent bulk storage and distribution plant handling flammable and toxic chemicals. The study covered normal operation, start-up, shutdown, maintenance and emergency operations. Our expert facilitator chaired the HAZOP session and our scribe took notes using a software.

Printing Industry - DSEAR

DSEAR Assessment was completed for multiple sites all around the UK. These assessments were necessary for identifying hazardous areas to reduce the risks of explosive atmospheres.

Consumer Goods and Healthcare Industry - Dispersion and Consequence Modelling

Dispersion and Consequence Modelling was conducted for toxic chemicals stored and handled in the facility to estimate cloud dispersion and distances for hazardous concentrations.

Paint Industry – Hazardous Area Classification

Our experts helped the company to form guidelines for Hazardous Area Classification with predefined examples and calculations for their plant areas and unit operations. Based on these guidelines, existing Hazardous Area Classification reports were reviewed for their plants all around the globe.

Chemical Industry – LOPA

LOPA (Layer of Protection Analysis) was carried out for the chemical facility handling multiple hazardous chemicals, high pressure & temperature unit operations. Based on LOPA, risk reduction measures with required Probability of Failure on Demand (PFD) were suggested.

Food Industry - Process Safety Testing

Our ISO 17025 certified laboratory helped the facility to identify flammability properties (such as MIE, MIT, LIT, Explosion Severity – Kst & Pmax, MEC, LOC) for Flour, Sugar, Spices, etc. and further helped them to interpret the properties to establish adequate Basis of Safety for their operations.


What our customers say

"Consultants at Sigma HSE have done a great job in providing a practical and cost-effective solution for DSEAR / ATEX implementation". The team's technical expertise has made the whole process very simple and easy to follow for our staff"

Consumer GoodsEHS Manager

"Detail-oriented approach of the consultants has helped our team in identifying various risks & hazards involved in different stages of the project and helped us in making design and operational changes at the right time"

ChemicalsProject Engineer

"It was great working with the Sigma HSE team, as this was our first time working with a vendor on a bigger scale for process safety management. The team was diligent and articulate, and ultimately we are thrilled with the end result and level of awareness among our employees for the safety culture"

PharmaceuticalEHS Lead

"Sigma HSE completed successful DSEAR Assessment for multiple sites parallelly all around the UK with flawless execution. Considering inventories of flammable chemicals these assessments were crucial in identifying hazardous areas to reduce the risks of explosive atmospheres at our sites. Thanks to Sigma HSE team our operation is much safer now."

Printing IndustrySite Head

Why we're different

We are passionate in providing real-world Process Safety advice

  • Value-added practical approach to consultancy
  • Flexibility to meet your time-critical requirements
  • Global capability
  • ISO/IEC 17025:2017 accredited testing laboratory


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