Technical Control System
A practical control process for hazardous area inspection and remedial work. We define scope and acceptance criteria early, align inspection and verification to real installation conditions, control deviations, and close out findings so handover is clean and controlled.
The technical control process (end-to-end)
MurphyEx structures hazardous area inspection and equipment installation as a connected control system. Each procedure links to the next so inspection readiness, audit readiness, close-out, and handover are achieved without gaps between specification, installation, and verification.
Ready to apply this to your project?
We can set the inspection Standard, acceptance criteria, and Inspection Dossier early so verification and handover run clean.
Control procedures (guidance, intelligence, control)
These pages support the control process with interpretation, repeat-pattern learning, and clear control so acceptance and close-out carry through audit and acceptance review.
Technical Guidance
Interpretation of standards, installation intent, inspection meaning, and acceptance logic.
Technical Intelligence
Repeat failure modes, drivers behind findings, and inspection trends from real projects.
Compliance Assurance
Audit-ready traceability, controlled close-out, and operator-facing review structure.
Delivery responsibility and execution scope
The Technical Control System defines how compliance is controlled. The Ex Services page defines how MurphyEx executes the work, including scope, responsibilities, and deliver process.
Where this protects schedule
Close-out delays rarely come from inspection itself. They come from misalignment between selection intent, installation constraints, certification conditions, class expectations (DNV, ABS), and the operator acceptance criteria applied at verification. This process keeps those elements aligned so findings do not reappear at close-out or handover.
Procurement
Lock selection intent, Ex marking, and the certificate register requirements early to prevent substitutions and gaps in conformity.
Installation
Capture installation constraints and inspection access so verification is practical, repeatable, and aligned to the agreed inspection standards.
Inspection
Plan and execute the required IECEx inspection class (visual, close, detailed) to the client and operator inspection standards.
Close-out
Close NCRs and punch items against defined acceptance criteria, with IECEx check sheets and marking captures tied to each tag.
Handover
Handover with an Inspection Dossier: IECEx check sheets, certificate register references, tag linkage, and structured acceptance status.
Audit
Audit-ready traceability from tag to inspection record to certificate register entry, aligned to certification conditions, class rules, and operator review.
Inspection Dossier
The difference between “documented” and “accepted” is verification quality. We structure inspection records, certificate register references, and sign-off into an Inspection Dossier so close-out and handover are controlled and reviewable by operators, class (DNV, ABS), and certifying authorities.
Dossier contents
IECEx inspection check sheets, marking and nameplate captures, photographs where required, tag linkage, inspection summaries, and the certificate register with source certificate references (OEM schedules where applicable), organised for verifier review.
Acceptance criteria
Defined at the start: IECEx inspection class (visual, close, detailed), client and operator requirements, class expectations (DNV, ABS), pass or fail criteria, tolerances, required records, and signatory roles.
Traceability
Each item links from tag to inspection result, marking capture, and certificate register entry, aligned to certification conditions and installation constraints, not just part numbers.
Close-out discipline
NCRs, punch items, and corrective actions close against the agreed acceptance criteria, with consistent technical approval and clear accepted, conditional, or open status.
Ready to formalise inspection and acceptance?
We can set the inspection class, classification society requirements, operator acceptance criteria, and the Inspection Dossier so verification, close-out, and handover are controlled.
A controlled technical from scope definition to accepted handover
Start with the process, then use the control measures to align scope, inspection standards, deviation control, and acceptance so handover is controlled.