NDTScan surveys marine structures at Fosdyke for the harbour authority, port operators, engineers, insurers and private owners. Fosdyke harbour appears in the Department for Transport's freight statistics as a minor port, so commercial cargo still crosses its quays. All of it crosses steel and concrete that stands in salt water twice a day, and that is the stock NDTScan measures: sheet piles, tubular piles, jetty beams, dolphins, fenders, lock gates, quay walls, sea walls and slipways.
Steel at Fosdyke is measured on a grid the engineer can repeat: remaining wall thickness on piles and beams with calibrated ultrasonic gauges, corrosion mapping where thinning is uneven, pitting depth at the splash zone and section loss at the mud line. Concrete is mapped for reinforcement and cover, tested for carbonation, chlorides and strength, and recorded unit by unit for cracking, spalling and delamination. The readings go on a drawing, not in a list.
A marine survey that stops at a page of readings has not done its job. NDTScan's Fosdyke reports carry the thickness data on the drawing, the corrosion maps, the concrete condition record and photographs of every defect that matters, with a plain statement of what was found and what was not. Where asked, a remaining-life estimate and a reinspection interval follow from the readings rather than from a rule of thumb.
One rule applies to every marine structure at Fosdyke: no repair, sleeving, jacketing, cathodic protection scheme or replacement should be specified until the structure has been measured and the readings interpreted by a competent specialist. Marine repairs are expensive and access is the largest part of the cost. Measuring first is the cheapest part of getting the repair right.
Scan before you repair. That is the standing advice for every Fosdyke client, and the reason NDTScan reports what the concrete contains before anyone specifies what to do about it.
Services at Fosdyke
- Ultrasonic Thickness Testing Remaining wall thickness and corrosion mapping on steel piles, sheet piles, jetty beams, dolphins, lock gates, pontoons and hulls at Fosdyke, measured on a repeatable grid from the boat, the deck or the foreshore.
- Concrete Condition Surveys Reinforcement and cover mapping by ground penetrating radar, carbonation, chloride and strength testing, and unit by unit condition recording on quay walls, sea walls, breakwaters, pier decks and slipways.
- Drone and ROV Inspection Drone survey of decks, fenders, ladders and superstructure above the waterline, and inspection-class ROV coverage of the piles and walls that stay submerged, all located on one plan of the Fosdyke structure.
Marine Work at Fosdyke
Typical Fosdyke instructions: ultrasonic thickness surveys of sheet pile quays and tubular jetty piles; corrosion mapping of lock gates and dolphins; condition surveys of concrete sea walls, breakwater crowns and promenades; reinforcement mapping and strength testing before repair; drone inspection of deck and superstructure; ROV inspection of submerged piles; and independent reports for insurers after storm damage or vessel impact.
NDTScan also surveys marine structures at London, Grimsby and Immingham, Southampton, Liverpool, Tees and Hartlepool and Felixstowe and every other port and harbour in England. The service is described in full on the marine surveys page.
About NDTScan
NDTScan is a specialist non-destructive testing company based in Oxford and led by Neil Smuts. Its marine work brings together ultrasonic thickness testing and corrosion mapping of steel, concrete scanning and condition surveys, drone inspection and ROV inspection, delivered from its own survey boat or from land. NDTScan is a Level 4 UKCSS Operator, the first in the UK to achieve that certification, and it attends Fosdyke and the whole of the UK coast from its Oxford base.