Deep excavation, shoring & dewatering

Permit Holders, Authorized Persons, supervisors, temporary-works coordinators and dewatering leads.

ADOSH-SF v4.1 (February 2026) CoP 29.0 Excavation Work and CoP 21.0 Permit to Work Systems, plus emirate-level discharge approvals.

Service drawings, scanning, trial pits and asset-owner NOCs are confirmed before any mechanical excavation.

Electrical, mechanical and process isolations supporting the dig are certified and cross-referenced to the excavation PTW.

Deep, shored or flooded excavations may require atmospheric testing and a confined-space permit under CoP 27.0.

Crane, piling rig and plant movements near the edge are planned against the engineer-defined surcharge limits.

ADM / DMT approvals with the relevant environmental and receiving-asset controls. Maintain permit and testing evidence; effluent must be free of solids, pollutants and oil.

Authority depends on plot and receiver — DDA, municipality, master developer or free zone. The DDA NOC permits the approved storm-network or temporary-lagoon route for that development area.

Written, project-specific confirmation through Sharjah Municipality and the receiving-asset owner. Treat discharge as prohibited until route and conditions are approved.

Method, target drawdown, pumping rate, duration, standby capacity and treatment arrangement.

Key plan, protected pipe route, discharge point and system layout verified at the work face.

Approval must match the exact plot, receiver, operating period and issuing authority.

Silt, oil and pollutant controls installed; required sampling and testing records are available.

Inclinometers, survey prisms and total-station readings reveal lateral deflection and rotation of sheet piles or shoring walls.

Piezometers and observation wells track drawdown, pore pressure, inflow and off-site groundwater response.

Strut, anchor and hydraulic-pressure measurements confirm temporary works perform within the approved design envelope.

Settlement points, crack mapping, seepage checks and daily inspection identify conditions instruments may not capture.

Readings and rate of change remain within the approved design envelope. Maintain the planned frequency and keep records current.

A trend approaches a limit or a reading is anomalous. Verify the reading, inspect the work face and increase monitoring frequency.

Stop affected work; isolate, inspect, evacuate if required and obtain engineer direction.

Current excavation PTW, utility clearance and applicable isolation / lift / confined-space certificates are cross-referenced.

Installed sheet piles, walings, struts and anchors match the approved drawing and construction sequence.

Competent-person inspection confirms no damage, displacement, seepage, adverse movement or unauthorised alteration.

Spoil, cranes, rigs and vehicles remain outside the engineer-defined edge and loading limits.

Duty and tested standby pumps, independent emergency power and adequate fuel are ready for every shift.

Water level, flow, runtime, pressure/current and groundwater response are recorded and reviewed against trigger levels.

Hoses, headers and electrical cables are secured, protected from plant and kept clear of access and rescue routes.

Stop excavation, lifting, pile driving and vehicle movement. Stop entry immediately.

Clear the excavation and collapse zone by the safe route; complete a rapid head count.

Establish exclusion control and alert Incident Command, emergency services, temporary works and dewatering leads.

Stop plant, lifting and vibration; control water and electrical risks from a safe location; assess wall movement and atmosphere.

Use remote accountability, safe-edge retrieval or a verified rescue platform whenever that can recover the casualty without exposing rescuers.

Entry rescue needs Incident Command, a competent rescue lead, engineering go/no-go confirmation, suitable equipment and protected access.

The Permit Holder records support stage, monitoring trend, groundwater level, pumps, isolations, SIMOPS and outstanding defects.

The incoming Authorized Person and Permit Holder complete a physical inspection and confirm the controls remain suitable.

The new work party is briefed in a common language, signs its understanding, then recommences only under the valid PTW.

Temporary works, dewatering, permit interfaces and emergency readiness are each recorded and verified.

Rising water, movement, adverse gas testing or a monitoring Action/Alarm condition changes the safety case. Secure the area → notify supervision → review PTW.

Do not remove, loosen, relocate or load sheet piles, walings, struts, anchors or edge controls without written authority.

Groundwater discharge requires a route-specific approval, compliant treatment controls and the required verification records.

Flooded or unstable excavations present secondary-collapse, electrical and atmospheric risks to unplanned rescuers.

Confirm the work scope, active hazards, alarm signals, emergency route and stop-work triggers in a language the crew understands.

Check permits, temporary works, water control, monitoring, access and rescue readiness at the work face.

Capture inspections, readings, pump status, permits, NOCs, defects and corrective actions in the controlled project log.

Stop early and refer changing conditions to the Permit Authority, temporary-works and dewatering leads.

Ground conditions, support systems, dewatering, competent-person inspection and deep-excavation atmospheric controls.

PTW issue, shift duration, revalidation, formal handover, SIMOPS, management of change and emergency suspension.

Site dewatering approvals, clean-effluent and testing evidence, discharge responsibilities and prohibited releases.

Approval for underground-water discharge to an approved storm-water network or temporary lagoon in the relevant DDA area.

Municipal NOC context for groundwater and wastewater discharge to sea, creek or canals; confirm live service requirements.

Obtain project-specific written confirmation of the receiver, route, conditions, testing and permit/NOC process before discharge.

Call emergency services; secure access and preserve the scene once life safety is protected. Dubai’s construction safety manual directs Police notification on 999 for serious accidents and LTIs needing hospital transfer. Record call time, caller, level, grid and incident reference.

Ministerial Resolution No. 657 of 2022 requires the employer to report any work injury or occupational disease within 48 hours. The federal OSH decision also requires immediate reporting to MOHRE and the appropriate authorities — escalate serious and fatal events immediately rather than using 48 hours as the target.

Form G Serious Incident Notification goes to the concerned Sector Regulatory Authority: within 24 hours for a fatality, and within a maximum of 3 working days for other serious incidents, serious dangerous occurrences and serious occupational illness. The form’s official-use section decides onward ADPHC routing.

Submit Form G1 Serious Incident Investigation as soon as practicable and no later than 30 calendar days from the incident, with the investigation report, photos, technical findings, causes, corrective actions and evidence of immediate controls. G1 never replaces the earlier G notice.

DMT HSE-plan guidance directs Form G and Form G1. No universal separate municipal hour-by-hour deadline was established in the public material reviewed. Notify the nominated permit contact and supervising consultant in parallel, suspend affected work and keep the acknowledgement — the active permit and authority direction may be stricter.

Contract and project plans commonly require faster notification than the statutory outer limit, and never replace authority reporting. Preserve monitoring, CCTV, lift-plan, permit and temporary-works records.

The appointed person and temporary-works/formwork authority record the lift ID, verified load mass, travel and landing path, hook and rigging projection, controlled slew, clearance, dynamic movement and the defined drop area for each repetitive lift family — and revise it when conditions change.

The full workfront, access walkway, leading edges, laydown zone and emergency route must sit outside the approved envelope before any load moves. No load travels over occupied formwork, rebar, an active pour or unsupported temporary works.

Crane radius, outrigger bearing, set-back and shoring surcharge limits are accepted by the appointed person and TWC/geotechnical authority; landing load, pour status and formwork release are accepted by the structural/formwork authority.

Shift-start workface audit before any lifting/concreting SIMOPS; pre-lift exclusion-zone audit for each lift family and every critical lift; change-trigger audit after crane relocation, route or barrier change, weather, water or monitoring trigger; continuous observation during lifting; daily independent assurance sample for high-risk SIMOPS.

Boundary continuity, visibility from every approach, controlled entry points, people clearance, protected evacuation route, barrier stability against hose, plant, wind and vibration — and restart discipline after any breach.

A01–A15 run from lift-plan availability and verified load mass to communications testing, wind and visibility limits, monitoring and dewatering status, and management of change — each with a Green / Amber / Red decision and a defined auditor action.