NDT - Non Destructive Testing

ABOVE, Within, Beneath, NOTHING LEFT UNSEEN

The problem: defects don’t announce themselves

Drone inspection tells you what a structure or asset looks like. Thermography tells you where heat, moisture or electrical anomalies are hiding beneath the surface. Non-destructive testing (NDT) answers the question both leave open: what’s actually happening inside the material itself.

Through our specialist NDT network, Site Matrix extends its condition-assessment capability to weld and structural integrity, concrete scanning, and corrosion or wall-thickness surveys — coordinated the same way as our drone and thermal work: engineering-led, single point of contact, one reviewed report rather than three disconnected findings from three vendors.

NDT is delivered by accredited specialist partners under their own standards and accreditation.

The inspection that pays for itself before you've had the invoice.

Why it matters

Visual and thermal inspection can flag where to look. They can’t tell you the extent of a defect, whether a weld will hold under load, or how much wall thickness a corroded pipe has left. That’s a materials-science question, requiring certified NDT methods to answer defensibly — for insurance, compliance, handover, or peace of mind before a costly rectification decision.

OUR SERVICES

Structural & Civil Integrity

Concrete Scanning

Locates rebar, post-tension cables, conduits and voids before coring, cutting or drilling.

Ground Penetrating Radar (GPR)

Concrete Condition Assessment

Assesses reinforcement cover, corrosion risk and carbonation depth in existing concrete

Covermeter survey, half-cell potential mapping, carbonation/chloride testing

● Structural steel & weld inspection

Verifies weld integrity and detects surface/near-surface defects in structural steelwork

Magnetic Particle Testing (MT), Ultrasonic Testing (UT), Visual Inspection (VT)

Mechanical & Pressure Equipment Integrity

Pipeline & pressure vessel integrity

Measures remaining wall thickness and confirms material grade on pipework and vessels

Ultrasonic thickness gauging, CUI surveys, PMI

Weld & fabrication testing

Detects internal and subsurface weld defects in fabricated plant and pressure equipment

Radiographic Testing (RT), Ultrasonic Phased Array (UTPA) / Time-of-Flight Diffraction (TOFD), Penetrant Testing (PT)

Rotating & critical plant components

Identifies surface cracking and monitors active defect growth in critical rotating/static plant

Eddy Current Testing, Acoustic Emission Monitoring

Access & Verification

Remote visual inspection

Provides visual condition data on elevated or hard-to-access assets without entry or access equipment

Drone-based Visual Testing (VT)

3D laser scanning

Captures precise dimensional data for as-built verification and BIM integration

Laser scanning / point cloud capture

Leak & pressure testing

Confirms system integrity and pinpoints leak location prior to commissioning or return to service

Hydrostatic/pneumatic testing, tracer gas leak detection

Side by Side Comparison

NDT vs. visual inspection alone

Each pillar alone gives you a view. The Site Matrix Method maps the right combination of Above, Within and Beneath to what your structure actually requires.

Item	Visual inspection alone	NDT
Defect extent	Flagged, not measured	Measured and quantified
Weld/structural confidence	Assumed	Verified by accredited NDT specialists
Decision basis	Guesswork	Defensible engineering data

How It Works

Step 1 - Scoping Call

asset, defect concerns, access constraints, standard/compliance driver

Step 2 - Method selection

matched to the question you need answered, avoiding over-scoping.

Step 3 - Specialist deployment

an accredited NDT technician scheduled and coordinated with your site/shutdown timing

Step 4 - Testing & data capture

by an accredited specialist partner

Step 5 - Engineering review

checked for consistency against drawings, specs and prior inspection history

Step 6 - Reporting & next steps

one consolidated report, plus a trade partner referral if rectification is needed

ABOVE, Within, Beneath, NOTHING LEFT UNSEEN

Engineering-led, not just coordinated

Our director holds a registered Professional Engineer (CPEng) status and sits on the National Engineering Register (NER), and that standard governs how every engagement — drone, thermal or NDT — is scoped, reviewed and reported. The technicians in our network hold the testing certifications;

Site Matrix holds the engineering accountability for how those results are interpreted and applied.

Who WE WORK WITH

Who this is for

Commercial construction clients needing concrete scanning before penetrations, or weld verification
Industrial / Service contractors and plant operators needing corrosion mapping, pipeline integrity checks, or shutdown-window testing
Professional services partners — structural/civil engineers, building surveyors, project managers — needing one engineering-reviewed point of contact for NDT scopes within a wider project

MISSED WINDOWS DONT REOPEN

A shutdown maintenance window, a due-diligence period, a defects-liability-period close-out — each one creates a hard DEADLINE that doesn't wait for a convenient time. Scope your NDT requirements now, while there's still room to schedule around it.

BOOK AN NDT SCOPING CALL

Your questions answered