Tunnel Inspector

Job SnapshotRole: Tunnel Inspector
- TBM OperationsLocation: Dubai, United Arab EmiratesIndustry: Civil EngineeringFunction: Building-Construction InspectionExperience: Minimum 8 yearsJob Type: Full-timePosition Overview: Tunnel Inspector
- TBM Operations in Dubai, United Arab Emirates is a specialized Civil Engineering opportunity focused on TBM excavation, segment installation, backfill grouting, tunnel lining, instrumentation monitoring, and construction quality inspection. Parsons Corporation is hiring an experienced tunnel professional to supervise large-diameter TBM operations, verify machine parameters, inspect precast segment installation, monitor ground behavior, coordinate instrumentation data, and ensure tunneling activities comply with approved methods, ITPs, QA/QC requirements, safety procedures, and contract DetailsCountry: United Arab EmiratesCity: DubaiIndustry: Civil EngineeringFunction: Building-Construction InspectionSalary: 16000-24000 Estimated salary range based on similar jobs in the job city; please confirm the final offer with the employer.
Gender: AnyCandidate Nationality: AnyJob Type: Full-timeRole ContextThe Tunnel Inspector will provide continuous construction supervision during TBM excavation and tunnel lining operations, supporting the Resident Engineer with technical inspection, quality verification, operational monitoring, and accurate reporting. The role requires close attention to machine behavior, earth pressure balance, segment erection, grouting, ground response, settlement, drainage, maintenance activities, and tunnel defects. Reliable inspection will help maintain tunnel stability, protect adjacent roads and structures, control construction risk, and ensure completed tunnel works meet contractual and design requirements.

Key Responsibilities
Assist the Resident Engineer with supervision of TBM tunneling, lining installation, segment repairs, and associated underground works.
Monitor TBM excavation to confirm operations follow approved drive instructions, method statements, ITPs, protocols, and contract drive instruction sheets before and during face pressure, machine advance rate, applied torque, thrust force, cutterhead RPM, screw conveyor operation, muck characteristics, and other relevant TBM parameters.
Identify abnormal operating conditions and assess potential risks associated with machine position, adjacent structures, roads, utilities, and ground conditions.
Monitor Earth Pressure Balance TBM operations where applicable.
Verify annular gap and backfill grouting activities behind installed tunnel segments.
Check grout pressure, volume, mix properties, injection sequence, and continuity of grouting.
Inspect segment identification, positioning, gasket condition, joint alignment, and completed ring geometry.
Check tunnel ring build-up for lips, steps, offsets, and other installation irregularities.
Inspect precast segments for cracks, damaged edges, moisture, leakage, and other defects.
Classify segment defects in accordance with project requirements and approved repair procedures.
Monitor implementation of approved segment repair method application of tail seal grease and verify routine TBM operating and maintenance activities.
Monitor segment handling, grout supply, foam consumption, and related processes affecting safe and continuous machine with TBM shift teams to review excavation, ring installation, grouting, and daily production records.
Review shift and daily reports against actual site conditions and machine report loss of face pressure, excessive grout pressure, abnormal machine parameters, unexpected ground conditions, water ingress, or other conditions affecting tunnel stability.
Monitor surface settlement and other ground movement during TBM advance.
Coordinate closely with instrumentation and monitoring teams when tunneling beneath roads, buildings, utilities, structures, waterways, and other sensitive assets.
Verify that measured settlement remains within approved design and alert limits.
Notify geotechnical teams when ground behavior differs materially from anticipated design conditions.
Support assessment of unexpected soil, rock, groundwater, weak zones, cavities, fractures, and other adverse geological conditions.
Review method statements, technical proposals, material submittals, test plans, and tunnel construction technical comments and recommendations to the Resident Engineer.
Support the supervision team on tunnel excavation, segment erection, waterproofing, grouting, and associated tunnel works.
Coordinate with design engineers when structural, geological, or constructability issues arise.
Inspect temporary and permanent tunnel drainage systems required for safe TBM incidents and assist with identifying root causes.
Monitor implementation and closure of corrective and preventive actions.
Track tunnel construction progress against approved baseline programmes and construction sequences.
Highlight foreseeable delays and operational constraints affecting product