Thermal resistivity test

RET - Returned

Reference: RA-2026-zAD0xZrO

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Total Activities

High Risk

Medium Risk

Low Risk

📄 Method Statement

THERMAL RESISTIVITY TEST.docx

470.4 KB docx

📎 Associated Documents

Documents uploaded for different statuses

Method Statement for Geophysical investigation works (TAQA).pdf

AP • Aug 14, 2026 06:35 • 880.4 KB

View Download

DTS-049 Method of Statement for Trial Pits Excavation RB.pdf

AEN • Aug 14, 2026 07:11 • 726.8 KB

View Download

Status Timeline

Current: RET - Returned History:

AP - Approved (Aug 14)

AEN - Approved except as Noted (Aug 14)

Risk Assessment Matrix

SN	Activity	Hazard	Consequence	Groups Exposed	Controls	Initial Risk	Additional Controls	Residual Risk
1	Complete HDPE Duct Infill	1. Vehicle movement and traffic hazards 2. Manual handling during loading/unloading 3. Uneven ground conditions	Personal injury, property damage	Site Personnel, Subcontractors, Public	1. Implement traffic management plan 2. Designated walkways 3. Mandatory PPE 4. Speed limit enforcement	P 3 × S 3 9	1. Comply with ADOSH SF CoP 27.0 2. Daily vehicle inspection 3. Toolbox talk	P 2 × S 2 4
2	Site mobilization and setup of temporary	Passing high-speed public traffic and moving site vehicles	Personal injury, property damage	Site Personnel, Subcontractors, Public	Approved TTM plan, high-visibility clothing (Class 3), physical water-filled/concrete barriers, advanced warning signs, and trained flagmen.	P 3 × S 3 9	Deployment of Truck Mounted Attenuators (TMA) and enforcement of reduced speed limit zone in coordination with local traffic authorities.	P 2 × S 2 4
3	Trench excavation and sub-surface ground preparation	Accidental strike on existing buried live electrical cables or gas utilities	Personal injury, property damage	Site Personnel, Subcontractors, Public	Utility mapping review, CAT & Genny cable avoidance scanning, and manual trial pits (pot-holing) prior to mechanical excavation.	P 3 × S 3 9	Mandatory Permit to Dig system, use of insulated hand tools near identified utilities, and continuous competent supervision.	P 2 × S 2 4
4	Uncoiling, handling, and positioning HDPE pipe	Sudden release of stored mechanical spring energy in coiled HDPE pipe	Personal injury, property damage	Site Personnel, Subcontractors, Public	Use of specialized pipe reeler/uncoiler frame, controlled strap cutting procedures, and establishing exclusion zones.	P 3 × S 3 9	Mandatory deployment of safety restraints/bands before unstrapping and wearing high-impact resistant safety glasses and gloves.	P 2 × S 2 4
5	HDPE pipe jointing via electrofusion and	High-temperature heating elements, hot molten plastic, and portable electrical generators	Personal injury, property damage	Site Personnel, Subcontractors, Public	Certified welding equipment, RCD-protected generators, heat-resistant safety gloves, and portable fire extinguishers nearby.	P 3 × S 3 9	Hot Work Permit implementation, provision of localized exhaust ventilation or respiratory protection (FFP3) in confined areas.	P 2 × S 2 4
6	Entry into underground chambers and manholes	Hazardous atmosphere (oxygen deficiency, toxic gases like H2S/methane), engulfment, or fall from height	Personal injury, property damage	Site Personnel, Subcontractors, Public	Confined Space Entry Permit, pre-entry 4-gas atmospheric testing, forced air ventilation, and tripod rescue system with harness.	P 3 × S 3 9	Continuous multi-gas monitoring during entry, dedicated trained top-person/standby monitor, and verified emergency rescue plan.	P 2 × S 2 4
7	Mechanical winch pulling of HDPE sub-ducts	High-tension winch wire snap, rotating capstans, and pinch/nip points	Personal injury, property damage	Site Personnel, Subcontractors, Public	Properly rated winching wire with calibrated weak-link swivel, emergency stop switches, and safety guards over rotating parts.	P 3 × S 3 9	Integrated load monitoring with automatic shut-off at peak tension limits and strict exclusion zones along the tension line.	P 2 × S 2 4
8	Duct proving (mandrel testing) and air	Uncontrolled high-pressure compressed air release and projectile ejection of foam pig or mandrel	Personal injury, property damage	Site Personnel, Subcontractors, Public	Calibrated pressure relief valves, secure containment/catcher cage at receiving duct end, clear exclusion zone enforcement.	P 3 × S 3 9	Mandatory Pressure Testing Permit, full-face protection shields for operators, and calibrated double-gauge manifolds.	P 2 × S 2 4
9	Site mobilization and equipment unloading	Manual handling of heavy thermal resistivity test kits, calibrators, and portable generators	Musculoskeletal injuries, back strain, foot crush injuries from dropped equipment	Site Personnel, Subcontractors, Public	Team lifting for objects exceeding 20kg, utilization of wheeled transport cases, pre-task ergonomic briefing	P 3 × S 3 9	Mandatory safety boots with metatarsal protection, mechanical lifting aids for heavy battery packs and generators	P 2 × S 2 4
10	Underground utility identification and ground scanning prior to probe insertion	Striking buried live high-voltage power cables or gas pipes during probe installation	Electrocution, arc flash explosion, severe thermal burns, fatal injury	Site Personnel, Subcontractors, Public	Review of site utility drawings, CAT and Genny ground scanning across test location grid	P 4 × S 5 20	Permit to Dig / Penetration Permit issuance, mandatory hand digging / trial holes before mechanical probe insertion	P 1 × S 5 5
11	Driving thermal resistivity needle probes into soil/backfill	Flying soil/rock debris, high noise from impact hammers, pinch points on slide hammers	Eye impact injuries, localized hand/finger crush injuries, hearing damage	Site Personnel, Subcontractors, Public	Basic PPE (safety glasses, standard leather gloves), visual check of hammer tools	P 4 × S 3 12	Mandatory impact-resistant gloves (ANSI level 3), SNR 28dB hearing protection, established 2-meter exclusion zone	P 2 × S 2 4
12	Setting up electrical power supply and test unit wiring	Exposed electrical terminals, damaged insulation on test leads, short circuits	Electric shock, electrical burns, equipment damage	Site Personnel, Subcontractors, Public	Pre-use visual inspection of test cables, connectors, and insulated tools	P 3 × S 4 12	Deployment of Residual Current Devices (RCD/GFCI) on power sources, portable test unit PAT testing verification prior to site entry	P 1 × S 3 3

Likelihood / Frequency

Descriptor	Likely Frequency	Probability
Frequent	Occurs frequently	5
Often	Occurs several times per year	4
Likely	Has occurred more than once	3
Possible	Has occurred	2
Rare	Never occurred	1

Risk Matrix — Probability × Consequence

Probability	Consequence
	Insignificant (1)	Minor (2)	Moderate (3)	Major (4)	Catastrophic (5)
Rare (1)	1	2	3	4	5
Possible (2)	2	4	6	8	10
Likely (3)	3	6	9	12	15
Often (4)	4	8	12	16	20
Frequent / Almost Certain (5)	5	10	15	20	25

15 – 25	Extreme Risk	Activity or industry should not proceed in current form.
8 – 12	High Risk	Activity or industry should be modified to include remedial planning and action and be subject to detailed EHS assessment.
4 – 6	Moderate Risk	Activity or industry can operate subject to management and/or modification.
1 – 3	Low Risk	No action required, unless escalation of risk is possible.

Activity Log

System • updated matrix

3 months ago

System • updated

3 months ago

System • updated matrix

3 months ago

System • updated

3 months ago

System • uploaded document for status: AEN

3 months ago

System • updated matrix

3 months ago

System • updated

3 months ago

System • uploaded document for status: AP

3 months ago

System • created

3 months ago