Hazardous Area Design (HAD) is Ideal for EPC design phases, brownfield upgrades and compliance remediation.

Once the hazardous zones are defined the design must translate those zones into a buildable solution. We help asset owners and EPCs select compliant Ex equipment and protection techniques, define installation requirements, and produce the documentation needed for construction, commissioning, and ongoing inspection/maintenance.

Key outcomes

• Correct Ex equipment for the zone (EPL, gas group, temperature class, dust/IP requirements) — without over-specifying
• Installation detail that stands up to commissioning pressure (glands, sealing, segregation, earthing/bonding, mechanical protection)
• Documentation that supports inspection, maintenance, and future upgrades

What we do (scope inclusions)

• Review HAC outputs (or validate existing zones) and confirm design basis
• Develop an Ex Equipment Selection Schedule (EPL/protection technique, gas group, temp class, certificates, ‘X’ conditions)
• Engineering support for protection techniques (e.g., Ex d, Ex e, Ex i, Ex p, Ex n, Ex t) and IS loop design where required
• Define installation requirements: cable/gland selection, sealing, segregation, ingress protection, earthing/bonding, labeling
• Vendor package review (motors, lighting, instruments, skids) to confirm certification and suitability
• Audit/verification readiness planning: inspection checklists, ITP/ITC, evidence requirements

Typical deliverables

• HAD Philosophy / Basis of Design (assumptions + verification approach)
• Ex equipment register + selection schedule (certificates + conditions of use)
• Installation requirements/spec for contractors (glands, sealing, conduits, segregation, terminations)
• Drawing markups/updates (as required) + construction notes
• Hazardous-area ITP/ITCs and commissioning checklists
• Handover dossier structure to support ongoing inspection and maintenance

Other HADC Services

Hazardous Area Classification

Hazardous Area Audits