Specialist safety consultancy, built on field experience.

Five disciplines. One methodology — AI-accelerated analysis, engineer-validated output. Every engagement is traceable to published standards and defensible under regulatory scrutiny.

01 // Process Safety

Process Safety & COMAH Compliance

From major accident hazard identification through to quantified risk assessment and ALARP demonstration — covering the full process safety lifecycle for COMAH Top Tier and non-COMAH sites.

Particularly strong in ALARP quantification, LOPA, and COMAH regulatory interface.

ALARP demonstration with quantitative CBA per HSE methodology
Layer of Protection Analysis (LOPA) studies
HAZOP facilitation and consequence definition
Bow-tie development and barrier management
COMAH Safety Report development and review
COMAH Regulation 6 notification preparation
Major accident hazard management frameworks
Root cause analysis and incident investigation
HSE ALARP Guidance Smith 2020 CCPS LOPA API 770 COMAH 2015 PD CLC/TR 50126
02 // Functional Safety

Functional Safety — IEC 61511

Full Safety Instrumented System lifecycle support from SIL determination through to verification and validation. TÜV Functional Safety Engineer methodology — rigorous, documented, and audit-ready.

Experience across upstream oil & gas and COMAH Top Tier refinery SIS applications.

SIL determination via LOPA or risk graph
Safety Requirement Specification (SRS) review
SIL verification — PFDavg, architectural constraints
Functional Safety Assessment Stage 1–3
FMEDA review and systematic capability assessment
SIS design review and logic solver assessment
Proof test procedure development
Functional safety management documentation
IEC 61511:2016 IEC 61508 TÜV Methodology CCPS SIL
03 // HSE & Regulatory

HSE & Regulatory Compliance

Practical compliance support across UK and international regulatory frameworks — from DSEAR zoning to occupational safety management systems designed to hold up under inspection.

Written for the regulatory interface, not just for the filing cabinet.

DSEAR assessment and ATEX zone classification
PSSR written scheme of examination support
Occupational risk assessment and method statements
Safety management system gap analysis
HSE inspection preparation and response
Management of Change (MOC) safety review
Permit to work system review
Emergency response planning support
DSEAR 2002 ATEX 137 PSSR 2000 RIDDOR ISO 45001
04 // Integrity Management

Inspection & Integrity Management

Pressure system and pipeline integrity work grounded in API standards — from fitness-for-service assessment to pressure relief system design. Particularly experienced in refinery and upstream hydrocarbon service.

Corrosion mechanisms, degradation modes, and consequence — understood from operations, not just theory.

Fitness-for-service assessment per API 579
t-min and t-alarm derivation for piping and vessels
Corrosion rate assessment and remaining life
PSV sizing per API 520/521/526
Overpressure scenario identification and relief load
HTHA assessment per API 941 (Nelson Curves)
Risk-based inspection (RBI) framework support
Pipeline integrity management programmes
API 579 API 520/521 API 526 API 941 API 570 ASME B31.3
05 // AI Engineering Tools

Bespoke AI-Powered Engineering Tools

Custom calculation tools built for your specific process, regulatory context, or site. AI-generated, engineer-validated, and formatted for the output you actually need — whether that's a report, a regulatory submission, or an internal decision tool.

Tell us what calculation you need. We'll build it.

Site-specific ALARP/CBA calculation tools
Custom COMAH inventory classification trackers
Stored energy and explosion exclusion zone calculators
Process-specific LOPA worksheets
Relief system sizing tools for specific fluid services
Corrosion allowance and remaining life calculators
Risk matrix and bow-tie visualisation tools
Regulatory report generation templates
Web-based No installation Standards-referenced Export-ready output

How an engagement works.

Every project follows the same disciplined process — fast to mobilise, rigorous in execution, clear in output.

01

Define the problem

We start with your actual engineering challenge — not a generic scope. What decision needs to be made? What does the output need to demonstrate?

02

Identify the standard

Every engagement maps to published methodology. We identify the applicable standard, its requirements, and any gaps in existing documentation before starting work.

03

Build and validate

AI accelerates the analysis. Engineer judgement validates it. Assumptions are documented. Limitations are stated. Nothing leaves without a qualified review.

04

Deliver usable output

Reports are written for the audience that matters — whether that's your engineering team, your board, or HSE. Formatted for the end use from the start.

Tell us what you're working on.

Whether it's a defined scope or an early-stage challenge, we're happy to discuss how HUMAIN Engineering can help.