full brochure 2010 cbc

INTRODUCTION

The pioneers of long distance internal pipe inspection

We are a client led, multi-disciplined group w ho strive to provide the definitive range of

essential support services to the water and related industries.

We provide national and international clients w ith a turnkey service for all aspects of

underw ater inspection, maintenance, rehabilitation and construction.

The group services include Internal Pipe Inspection / testing, Non Destructive Testing,

Diving, Confined Space Access and Remotely Operated Vehicles.

This level of diversity combining many disciplines has bred a culture of innovation w hich is

reflected in our ability to solve client's problems through existing or bespoke solutions.

We routinely w ork as principal contractors and project manage complex multi-disciplined projects from conception through to completion.

Internal Pipe Inspection / testing • Non Destructive Testing • Diving Confined Space Access • Remotely Operated Vehicles.

PROVIDING TOTAL CLIENT SUPPORT WORLDWIDE

Internal Pipe Inspection and Testing

Pipe Inspection Vehicles (PIV) enable detailed visual information, combined w ith accurate sonar imaging to be view ed live and simultaneously stored to hard-drive for maximum

image quality and ease of view ing.

Utilising unique pipe profiling sonar and specialised softw are, we are able to measure

remotely and quantify the visual information obtained by CCTV (see ‘Sonar scanning and profiling’).

Anomalies such as damage, deformation and joint displacement can be measured accurately. Silt and debris levels can be measured and the accumulative volume

assessed.

Sonar is unaffected by water clarity and produces valuable results under conditions that

would render CCTV ineffective.

Many assets have never been inspected, due to long distances between access points,

unacceptable disruption to services associated w ith de-watering and the inherent dangers

of ‘manned entry’.

Our Long distance PIV’s eliminate these problems and can be deployed into

live systems. Where necessary, we design and build bespoke launch systems.

We inspect and test partially surcharged to pressurised pipes, tunnels, aqueducts, culverts, penstocks and adits, and long sea outfalls in both f low ing and static water.

Our long distance internal Pipe Inspection Vehicles (PIV) traverse distances in excess of

24 kilometres from a single entry point and currently operate from w ithin 200mm to

6000mm+ diameter pipes (subject to site conditions).

We combine a broad range of inspection and Non-Destructive Testing techniques (see

‘Non-Destructive Testing’) to provide clients w ith vital asset condition information, from previously inaccessible areas.

Inspect Test

Condition and dimension surveys Lining thickness

Silt and debris levels Wall thickness

Deformation Concrete integrity

Joint displacement Structural condition of pipe

Benefits to clients include:

Unlimited sample readings

No requirement to excavate trial pits

Safe, remote inspection and testing of assets

Minimal or no disruption to pumping schedules

Bespoke solutions to inspection and testing problems


Diving Services

We are committed to providing clients w ith a turnkey service for all aspects of underwater inspection, construction, maintenance and rehabilitat ion.

Our innovative approach to problem solving has led us to undertake and complete

successfully some of the most diff icult and technically demanding operations w ithin the

industry, w hilst prioritising safety at all times.

Working closely w ith clients and the HSE, w e have prepared safe systems of w ork for

projects as complex as live sewer shaft rehabilitation and extreme confined space diving. tasks including Thermic lance cutting and precision concreting are routinely carried out in

zero underwater visibility.

Inspection services include video surveys utilising low light, high definition colour cameras, supported by ultra bright LED lighting. Hand-held profiling sonar can be used to

accurately measures objects underw ater that would be diff icult or impossible to measure by other means. For further details see ‘Multi-Media Reporting’.

Diver Non-Destructive Testing technique include electronic and ultrasonic tooling to assess concrete integrity, void detection, metal and lining thickness w ith accurate and

repeatable results. For further details see ‘Non-Destructive Testing’

We offer a broad spectrum of conventional repair and rehabilitation services.

Our depth of experience, coupled w ith an innovative ethos has enabled complex and

challenging problems to be overcome successfully.

Our design engineers and fabricators enable us to provide a genuine Turnkey solution for

many projects.


Unblemished safety record

Turnkey service for all aspects of underwater & marine works

One of few companies deploying E.U. approved equipment

Qualified and highly experienced personnel

Repair and rehabilitation Design, build and install

Lock gate seals and stop plank grooves Intake grills and screens

Shafts & Boreholes Sluice gates

Riverbanks and towpaths Mass and precision concreting/grouting

Dock & reservoir walls Erosion control

Valve and pipe work replacement Fixed underwater CCTV systems

Pipeline clearance and cleaning Pipe and cable laying


Remotely Operated Vehicle Services

A typical application being Scottish Pow er at Cruachan Pow er Station. A detailed video inspection of a penstock w as required. This particular penstock had never been surveyed.

The penstock w as 6m. In diameter and 400m. in length, running at an angle of 55° through

the mountain. A further complication being the presence of a bifurcation point, w here the

pipe divided into tw o tunnels, each 3m. diameter long and 200m. In length.

We developed a vehicle capable of carrying out the survey. The main vehicle surveyed the

f irst 400m. At the bifurcation point a separate CCTV system detached from the main vehicle and continued to inspect the 3m. diameter tunnels.

We operate a f leet of specialised Remotely Operated Vehicles (ROV).

Our ROV’s f ill the gap betw een the capabilit ies of our specialised internal Pipe Inspection Vehicles (PIV) and the requirement to inspect highly specif ic areas such as water tow ers

and industrial cooling pipes etc.

A comprehensive inspection capability utilising CCTV is further enhanced by our ability to

measure underwater features remotely. (see ‘Sonar profiling & scanning’). This enables

detailed reports to be generated without the need to deploy a dive team.

Many of the ROV’s can be f itted w ith the same inspection and testing equipment as our

Pipe Inspection Vehicles (see ‘Non-Destructive Testing’).


Can be deployed where there is no man access

Can be deployed safely in hazardous environments.

‘Off the shelf’ systems, for rapid deployment

Nominal surface support required

Common applications with ‘Off the shelf’ solutions

Lock systems

Underground reservoirs

Shafts, wells and boreholes

Water storage tanks

Filter beds

Adits and Tunnels

Culverts and Sluices

Where a standard vehicle is not suited, w e design, build and deploy bespoke vehicles to meet almost any inspection and testing criteria.


Report content

Full survey footage and report on DVD-ROM

Interactive web-based report

Sonar/video clips and stills of key areas

Graphical, three-dimensional representations

Drawings of key areas

Multi-Media Reporting

Survey footage including: CCTV footage, dimensions, sonar profiles, report text, etc. is combined w ith Non-Destructive Testing data and viewed live on the surface w hilst

being simultaneously recorded to hard drive in the surface control unit.

Reports are generated and formatted into interactive web based f iles for ease of view ing.

Hyperlinks enable easy access to footage, data and draw ings of key areas. This allow s for quick and easy access to data, even in large reports.

Morrison Utilities Brede Well 03 Key locations

Where required, Computer Aided Design is used to produce graphic representations and engineering draw ings. Reports are delivered on either CD-ROM or DVD-ROM dependent

on size. A hardcopy is also supplied.


Sonar profiling and scanning

Mounted on PIV’s, ROV’s or handheld, our unique profile sonar enables remote measuring in low or zero visibility situations. Accurate to w ithin 10 millimetres

(dependent on scale), the sonar system gets results in the most difficult underwater conditions.

Any number of measurements can be taken during the survey. Measurements can also be taken any t ime after the survey utilizing specialised computers.

An indication of the Density of the material is show n by the colour scale and intensity of

the scan.

Sonar profile

CCTV

Measurement string

Measurement value

Distance traversed

in metre’s

Bearing pitch

roll

Survey notes

Screen grab from typical internal pipe inspection. Pipe diameter of 1.8 meters. Measurement showing silt level at base of pipe. The sonar is unaffected by the low visibility.

Low density areas in the crown of this brick culvert show mortar loss.

Here the sonar is used to measure a lock gate stop plank groove.

Density scale


Non-Destructive Testing

Ultrasonic’s enable the testing of pipe w all thickness and lining de-lamination.

Ground Probing Radar (GPR) is used to detect and assess reinforcing w ithin concrete, voids, cracks and f issures in concrete and sub-strata.

Magnetic flux leakage (MFL) techniques are utilised to assess the condition and predict the longevity of steel & cast iron structures and pipelines etc.

As part of our ongoing development program, w e are currently w orking w ith a partnering company to adapt the MFL system for internal pipe testing on both cast and steel pipes.

The MFL system w ill operate remotely from our Pipe Inspection Vehicles (PIV) enabling

access & testing to be carried out on otherw ise inaccessible locations.

The Group provides a comprehensive range of Non-Destructive Testing services

When combined w ith our long distance internal pipe inspection capability, w e can extend the reach of asset investigation beyond conventional boundaries.

Whether deployed by Internal Pipe Inspection Vehicle, Diver or Remotely Operated Vehicle

our Non-destructive testing systems obtain critical information to enable clients to assess the structural integrity of assets.

Our partnering companies are amongst some of the leading experts in the NDT field. We

ensure that clients benefit from highly accurate data across all Non-Destructive Testing

disciplines.

Standard services include:

Metal particle inspection (M.P.I.)

Ultrasonic metal/plastic thickness testing

Concrete integrity testing

Ground probing radar (GPR)

Cathodic protection testing

Magnetic flux leakage

Lining thickness

Typical applications

Underwater and water filled structures

Tunnels, aqueducts and adits

Pipelines

Storage tanks and reservoirs

Bridges


Confined Space Services

Services include:

CCTV/Visual/Video inspection

Non-destructive testing (N.D.T.)

Reinforcing and repair work

Grout pumping and concreting

Ultra high pressure ‘cold’ cutting

Welding

Valve/Pipe installation/maintenance

The Water Services Group are committed to designing, building and operating equipment and utilising technology that can eliminate the need for manned access.

On many projects manned access remains the only practical option.

To this end, w e maintains teams of skilled and experienced confined space operatives w ho are supported by state of the art equipment.

We w ork in the capacity of sub-contractor or principal contractor to provide a safe and effective service on extreme locations including:

Landfill methane sumps - chemical storage tanks - live sewer systems - tunnels - shafts - subterranean chambers - adits - pipes - water storage tanks.

As project requirements dictate, w e utilise escape sets, full BA sets and surface supplied breathing air systems for extended duration contaminated environment w orks.

We operate air and hydraulic pow er tools; intrinsically safe camera’s, lights, tooling and

Non-Destructive Testing (NDT) equipment and w ork w ith partnering companies to provide

the definitive range of specialised inspection and testing services.

Excursions include:

Difficult and remote access

Extended duration operations

Contaminated/Harsh environment work

All projects are carried out in strict accordance w ith the Confined Space ACOP and w e consult w ith both the Health & Safety Executive and independent safety consultants on the

more complex projects that w e undertake.


SEA OUTFALL SERVICES

inspection ● testing ● cleaning ● rehabilitation ● tracking We provide a turnkey solution for all aspects of outfall inspection, testing and rehabilitation. Outfall surveys can present more challenges than other pipe surveys in terms of accessibility, dependency on weather and the identif ication of deterioration patterns. Exposure to the splash zone combined w ith an aggressive internal and external environment can serve to create widely varied corrosion and damage patterns. External surveys provide valuable information on general condition, but little of the information required to determine outfall performance and longevity.

Certain critical aspects of outfall performance and longevity can often only be determined accurately from w ithin the pipe.

We understand the diff iculties associated w ith obtaining the data required to effectively assess the condition and potential life-span of an outfall. To this end, we combine unique inspection systems w ith cutting edge technology to obtain data from locations previously considered inaccessible.

Internal inspection & testing

An internal inspection is of vital importance in determining silt/debris levels, damage and deformation, all of which have a direct impact on outfall performance.

Internal Non-Destructive Testing (NDT) including Ultrasonics and Magnetic Flux Leakage techniques (MFL), provide critical condition and longevity data. Outfall tracking

Outfall tracking, plotting the ‘x y z’ axis of the pipe, enables a comparative study to be made against the ‘as-built’ draw ings, in order to determine whether pipe migration has occurred.

Internal inspection & testing services

Sonar profiling - silt/debris/damage levels

Ultrasonic wall thickness testing

Magnetic Flux Leakage (MFL)

3D Gyroscopic outfall mapping

External inspection & testing services

Side - scan and bottom profiling sonar

Pipe location and tracking

Ultrasonic wall thickness testing

CCTV/Video - still photographic

Cathodic protection system testing

Outfall rehabilitation We provide a comprehensive range of rehabilitation services which include: placement of Fabric Formwork shuttering for pumped concrete containment on pipe stabilisation, pipe support and scour protection operations. Fabrication and installation of pipe saddles for localised repair and sectional replacement.

Diffuser clean, repair and replacement. Under-scouring is the major cause of joint displacement and subsequent failure. The problem is easily overcome by the timely placement of concrete stabilisation mattress.

Outfall cleaning We combine traditional High Pressure water jetting techniques with our unique winched scraper system to clean pipes varying between 400 - 1800mm diameter for lengths in excess of 700m. The w inching system is ‘low-impact’ and presents none of the damage hazards associated with traditional winching such as abrasion damage and joint displacement. The system is easily deployed by divers.

External inspection & testing

A detailed external inspection by divers will determine general condition including: extent of outfall burial/exposure, stabilisation & pipe saddle structural condition, condition and function of diffusers and localised wall thickness testing. The survey can be tied in to the internal survey w ith any internal anomalies being checked externally by diver. A detailed CCTV survey provides a permanent record. Vessel charter Vessels from 6m - 60m - Barges - Tugs - Amphibious vehicles

All-terrain HP jetting rig deployed at beach

access hatch to support pipe-cleaning operation on remote access location

Hi-vac lorry jetting unit and portable dive

trailer on work barge during 700m outfall cleaning operation

Placement of concrete stabilisation mattress

to support section of pipe spanning sea bed


PIPE REPAIR AND STABILISATION SYSTEM

pipe inspection ● testing ● cleaning ● rehabilitation ● tracking

We provide a turnkey solution for all aspects of pipe inspection, testing and rehabilitation. The Problem Follow ing an internal pipe inspection of a 2.5m diameter power station cooling pipe in India, serious pipe displacement and defective joints were found to be causing major operational diff iculties for GMR Energy, the power station owner. The common problem was that leaking joints in the pipe were washing out the surrounding bedding material resulting in pipe sections dropping into the newly formed voids, with subsequent joint displacement and the ingress of tons of the surrounding sand. Wave action against adjacent joints was starting to loosen previously stable joints.

After extensive research into proprietary pipe repair systems by both GMR Energy and WSG, it became clear that nothing on the market would come close to providing the necessary permanent and effective solution to their problem. The Solution As part of our ‘Total Client Support’ policy we designed, built and installed our unique pipe repair and stabilisation system on the f ive worst leaking and most heavily displaced joints. The system was modular to facilitate access via small diameter hatches and shafts, and was easily installed by our dive teams working in zero underwater visibility conditions. De-watering the pipe was not an option.

During the initial PIV survey and subsequently during the installation phase, voids of varying sizes were detected behind various pipe sections. The voids occurred as a result of joint displacement and localised damage to wall sections. A number of voids were f illed by ‘hand-placed’ concrete bags positioned prior to the repair system Installation, and/or a combination of pumped ‘micro-concrete’ via injection tubes strategically built into the repair system sections. Most of the repair joints required a combination of both techniques.

System applications

Displaced & damaged pipe joints

Localised wall damage

Pipes varying in diameter between 1m & 6m

Internal pipe stabilisation

Leaking joint repairs


Keystone By design the system provides a circumferential keystone that matches the exact profile of partially open or fully displaced joints and provides a high level of structural stability, even when the pipes are spanning voids in the bedding material, thus preventing further destabilisation.

The system is equally effective in concrete, steel, iron and brick built pipes, tunnels, culverts, outfalls and aqueducts, etc. irrespective of the transported f luid and f luid temperature.

Subject to requirements the system can be manufactured in stainless steel and custom built to suit any application.

Benefits

Cost effective permanent repair solution

Effective in dry, partially surcharged & surcharged pipes

Custom built to application

Unaffected by chemicals, temperature, salinity

‘no dig’ solution, resistant to internal/external pressure

Patent Application No: 0913010.5

TOTAL PIPE SOLUTION

survey ● report ● clean ● rehabilitate ● reline We provide a turnkey solution for all aspects of pipe inspection, testing and rehabilitation. We understand the delicate nature of old tunnels, culverts and aqueducts. We have inspected in excess of 400km of clients assets, many of which are in excess of 50 years old, with some in excess of 100 years old. Many traditional inspection and cleaning techniques can lead to catastrophic failure. We have devised and implemented many innovative and unique solutions to overcome this problem.

Initial Survey The initial survey is of paramount importance in determining the condition of an asset. Our minimum recommended combination of CCTV and Sonar enables important visual data to be gained (were visibility permits) and accurate measurements taken to assess critical issues such as deformation, cracks, voids, missing pointing, and silt/debris levels.

Sonar image (right) clearly shows missing pointing and deformation in brick culvert - BW Marsworth

Reporting & Recommendations Upon completion of the survey (subject to requirements) reports are generated and formatted into interactive browser based f iles for ease of viewing, allow ing for quick and easy access to data, graphic representations, ‘video

stills’ of key areas, and survey footage. At the same time, w e w ill provide a recommendation for any remedial w orks that appear necessary along w ith an indication of likely cost. Interactive browser based report

Thames Water Turnford Adit

Pipe Cleaning We provide a variety of innovative low impact cleaning techniques including rotary brush and low pressure water cleaning, non-water root cutting, all of which are carefully monitored throughout the operation.

Irish Glass Bottle Co. Dublin Removing industrial sand from 4’ diameter x 300m

long brick built culvert

Minimal environmental impact

No requirement for de-watering

No requirement for reservoir shut down

No requirement for costly piling.

Pipe Rehabilitation Pipe rehabilitation services include, pressure grouting, re-pointing, external concrete mattresses for protection and stabilisation, localised repair and sectional replacement. Many services can be carried as part of a diving operation or a remote underwater operation w ith no requirement to de-water

or suspend services. Timber form for Fabric Formwork Mattress being utilised for culvert repair and protection

Pipe Relining We provide a variety of innovative live pipe relining techniques which include relining with High Density Polyethylene (HDPE) pipe, for a permanent, cost effective solution.

Benefits Include: On a recent project for BW Morrison the above services were combined to inspect and measure the draw-off culvert at Marsworth Reservoir, a Site of Special Scientif ic Interest (SSSI). The proposed re-lining strategy

was accepted and successfully implemented. The project strategy eliminated reservoir shut down, de-watering or sheet piling thus ensuring there was no impact to the sensitive environment.

BW Morrison - Marsworth Reservoir

HDPE Pipe sections fusion welded on site

Pipe floated to location prior to winching

through existing culvert from paddle shaft


VESSEL CLEANING & MAINTENANCE

We are a total service provider for all aspects of vessel inspection, testing, cleaning and maintenance.

We have been actively involved in vessel cleaning, waterborne repairs and maintenance since the

early 1980’s.

We are committed to providing clients with a turnkey serv ice for all aspects of vessel inspection, testing, cleaning and maintenance, along with the inspection and maintenance of dock gates,

mooring systems and other harbour related structures.

We provide an efficient and cost effective ‘in-water’ hull cleaning service to improve hydro-dynamic efficiency and to facilitate comprehensive inspection and Non-Destructive Testing (NDT) for

condition assessment and longevity prediction.

Propeller cleaning and polishing With fuel-efficiency being of paramount importance we are increasingly asked to clean and polish

propellers.

Close monitoring of vessel performance shows that a power saving of 10-20% can be achieved as a direct result of effective propeller cleaning and polishing alone. In most cases underwater cleaning

and polishing produces superior finishes to the finish obtained during dry-dock cleaning.

Vessel repairs

Commercial considerations necessitate certain vessel repairs being carried out without the need to

dry-dock, being aware of the need for speed and effectiveness, we have combined traditional and

innovative techniques to provide efficient and cost-effective repair solutions.

Harbour repair & maintenance

We routinely carry out a full range of underwater engineering services including: dock gate repairs,

harbour walls, bridges, pontoons, mooring systems, sluices and specialised underwater concreting

for structural repairs, construction, pipe-support and anti-scour mattress installation.

Vessel Repairs

Wet Welding

Thermic lance cutting

Aperture blanking

Propeller repair/replacement

Bilge keel cropping

Anode replacement

Non-Destructive Testing


INTERNAL PIPE INSPECTION & TESTING, NON-DESTRUCTIVE TESTING (NDT) DIVING & CONFINED SPACE SERVICES, REMOTELY OPRERATED VEHICLES

VESSEL INSPECTION & TESTING

External inspection We are a total serv ice prov ider for all aspects of vessel inspection, testing, cleaning and

maintenance.

We have been actively involved in vessel maintenance since the early 1980’s, when in addition to providing our full range of diving inspection and maintenance services, we were responsible for and

actively involved in, the maintenance of the Hydrospace Int. dive support vessels based in the middle east.

Since then we have been committed to providing clients with a turnkey serv ice for all aspects of

vessel inspection, testing, cleaning and maintenance, along with the inspection and maintenance of dock gates, mooring systems and other harbour related structures.

We are keenly aware that commercial matters dictate vessel docking is kept to a minimum.

To this end, we strive to provide a fast response and an efficient service.

Rapid Inspections are an essential part of the service and where appropriate we utilise Remotely Operated Vehicles (ROV) to carry out an initial inspection of the Hull, Sea Chests and

Propellers etc.

Where further information is required we utilise teams of highly qualified, experienced divers to provide the additional technical information unobtainable from an ROV survey.

We operate a range of unique internal Pipe Inspection Vehicles (PIV) capable of inspecting both dry

and water filled pipes with diameters as small as 50mm.

Whatever your requirements for inspection may be, we guarantee to provide a solution.

If we do not have a suitable vehicle in our existing fleet of specialised PIV’s we will design, build and operate a bespoke system to match your requirement.

Internal inspection We inspect storage tanks, and confined spaces both remotely and by util ising our teams of fully

trained and equipped confined space personnel. We also operate extended duration surface supplied breathing apparatus sets, for difficult access and extended duration projects.

External vessel inspection

Diving inspection

Remotely Operated Vehicle (ROV) inspection

Remote inlet/outlet inspection

Internal vessel inspection

Internal pipe inspection

Confined space inspection

Remotely Operated Vehicle (ROV) inspection

Diving inspection

External/internal testing We provide a comprehensive range of non-destructive testing (NDT) services, including our unique Magnetic Flux Leakage (MFL) condition assessment system. We work closely w ith some of the leading experts in the NDT field to ensure that the level of technology that we offer to our clients is truly state-of-the-art.

Ultrasonic’s is ideally suited to carrying out localised wall thickness testing and can provide good comparative results between areas considered as high risk of wear and damage and the areas considered as low risk. MFL techniques are utilised to map and size all signif icant corrosion patterns on the external face of a structure and subject to corrosion drivers, corrosion protection and the extent of the surface area percentage inspected, we are able to predict structural longevity and overall structural condition. MPI we utilise a combination of techniques for detecting cracks, laps, seams, voids, pits, subsurface holes and other discontinuities.

We routinely deploy these techniques eff iciently and effectively on a wide variety of vessels, often under extreme conditions above and below water; in diff icult access confined spaces, suspended from ropes and within f luid storage tanks, to provide clients with critical asset condition information irrespective of location.


Internal and External vessel testing

Ultrasonic Testing

Magnetic Flux Leakage (MFL)

Metal Particle Inspection (MPI)

Hull roughness testing

Propeller roughness readings

CCTV Inspection

INTERNAL PIPE INSPECTION & TESTING, NON-DESTRUCTIVE TESTING (NDT) DIVING & CONFINED SPACE SERVICES, REMOTELY OPRERATED VEHICLES (ROV)

Ultrasonic thickness testing

full brochure 2010 cbc

Technology

w ith clients

international clients

w ater clarity

w ith dewatering

safe systems of w ork

disciplined group w

culture of innovation

remote inspection