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Natural Draught Cooling Tower Maintenance

At up to 200 metres tall and 100 metres in diameter, the repair and maintenance of cooling towers is often a complex and hazardous operation, particularly in gaining access to all elevations and orientations. Here, we have always been one step ahead of our competitors. Our ability to design and construct bespoke cathead systems that fit the precise cornice details at the top of the tower allows us access to all points of the stack via cradle access systems. This design capability, coupled with our experience in carrying out concrete repairs that prolong the working life of the towers, gives us unrivalled expertise in this demanding environment.

Concrete Repairs & FRP Repairs

Zenith provides a comprehensive concrete repair service for reinforced concrete structures including small area repairs, crack injection, spalling repairs, FRP repairs including the reinstatement of larger defective areas.

Utilising a combination of specialist access and standard access, designed by our structural engineers, we install safe temporary works to be enable time saving and cost effective solutions.

Concrete – Painting

Where access proves onerous, Zenith specialises in the painting of structures including industrial chimneys, natural draught cooling towers and other tall structures. We implement a variety of specialist access techniques to provide safe and cost effective solutions.

Maintenance – Industrial Chimneys

The inspection, maintenance, repair and demolition of industrial chimneys remains our core activity. The successful external and internal refurbishment of these structures requires a thorough survey to establish the true extent of the repair work required. A full digital survey is the first stage in a five-phase operation that includes access equipment design, installation, load testing and repairs. We offer an online hot camera inspection as digital photography can reveal weaknesses and defects that require attention, for example to the interior lining and brickwork, baffle walls and flue inlets. Critically, it also enables engineers to plan in advance of a shutdown.

Maintenance & Repair

Zenith specialises in carrying out repairs throughout all industrial, commercial and residential sectors. We provide all of the trades and skills required to maintain and repair buildings and structures. We work for the world’s leading companies ranging from petrochemical, power, steel and cement to academia, hospitals, local courts and much more.

Erection Works

We have a wealth of experience in providing all of the skills and trades necessary to carry out the erection of complex structures including section replacement. We employ specialist access to safely overcome the most demanding of tasks.

Maintenance – Steelworks

Zenith has a wealth of experience in this essential field of activity. We have decades of experience in the maintenance and repair of structures across steelworks including industrial chimneys, natural draught cooling towers, flares and other tall structures.

Lifting Design

In conjunction with our engineering, design and modelling capabilities, Zenith Consultants are able to offer solutions for complex rigging and lifting projects.

As full members of the Lifting Equipment Engineers Association, LEEA, we design and detail bespoke fabrications and solutions to our international customer base.

Where precise control, movement and weight measurement is required we are also capable of designing hydraulic lifting and sliding systems.

Temporary Works Design

From our core values – Design, Innovate & Excellence, our ability to solve technical challenges presented from unusual requests is exemplary. We are, on a day to day basis, continually seeking for new ways to overcome the most complex of engineering challenges.

From providing bespoke access and support solutions over some of the most historical structures in the city of Edinburgh and beyond to designing temporary access decks to large marine jetties, we are continually looking to innovate our designs by utilising modern access techniques and material.

Due to our experience and exposure in the industrial sectors we fully understand how down time and outage works affects process and cost. We aim to complete our designs with the minimum disruption at site level and interface closely with the Clients operations teams to fully understand the design brief from the outset.

Structural Design & Remediation

We are able to generate 2D and 3D models from captured survey information and existing drawings. We can accurately determine revised capacities and assess the life extensions of existing structures and structural elements. Decay, loss of section, material properties, geometry and change of use are a number of variables that can affect the performance and life span of any building or structure. This can all be modelled to represent a snapshot in time and assist with determining the structural integrity of existing assets.

All of our software interfaces with our drafting resource allowing us to accurately schedule components for fabrication purposes or cost analysis. By merging this data with our software we can generate powerful and detailed 3D graphical representations of any structure, or structural element, to better present our analysis results to our clients. These models can also be used to assists in desk top reviews of operational requirements where lifting or sliding of complex fabrications require to accurately interface with (or bypass) existing structural components or services.

Structural Assessment

Zenith Consultants operate the most up to date design and analysis software that supports all of our engineering services. In conjunction with a fully trained and experienced team of Engineers, Technicians and Administrators, this forms the core of our business.

In addition to traditional Civil & Structural engineering consultancy services, we are also capable of surveying, assessing and reporting on all types of existing structure, be it a simple precast concrete lintel or a complex multi-level steel frame or stack for our industrial sector clients. Our principles of analysis and utilisation of applicable design standards and codes are the same throughout.

UAV Inspection & Surveying Service

As part of Zenith’s expanding portfolio of services, we are pleased to provide our clients with our PfCO CAA licensed UAV Inspection and Surveying Service carried out by our team of 7 qualified pilots.

We are able to generate 2D and 3D models from captured survey information and existing drawings. We can accurately determine revised capacities and assess the life extensions of existing structures and structural elements.

Decay, loss of section, material properties, geometry and change of use are a number of variables that can affect the performance and life span of any building or structure. This can all be modelled to represent a snapshot in time and assist with determining the structural integrity of existing assets.

A UAV inspection allows for a visual examination of structures providing photographic and video records. Following the survey, a comprehensive report is compiled by our dedicated team of Structural Engineers. UAV inspections allow engineers to identify and assess the general condition of the structure. This combined with Zenith’s hands on survey capability offers clients a full suite of inspection services.

Our UAS platforms can be tailored to suit the prospective operation, whether it be for extended flight duration, thermography, high definition photo or video imagery.

Visual Survey

Using our 30x optical zoom camera we can capture detailed close-up video and still imagery, even when the survey environment does not allow us to fly close to the subject, such as operational flare tips and chimneys.  Ideal for condition surveys and defect identification on buildings and elevated structures.

  • Flare tip condition surveys
  • Cooling tower and chimney condition surveys
  • Roof and gutter inspections
  • Jetty inspections

Our high-resolution cameras are capable of 20Mp images and up to 5.2k definition video for high quality media for project highlights and marketing.

Thermographic Survey

Our thermal camera uses a specialized FLIR Tau 2 thermal sensor and a 4K visual camera along with image processors to render the results on a visual display. We have the capability to interrogate and interpret the survey data to identify temperature differentials and defects.

  • Insulation defects
  • Moisture ingress
  • Building heat loss

Orthomosaic and 3D Point Cloud

We can create high resolution orthomosaic images and 3D models of sites and structures by collecting a large number of individual overlapping photographs and processing them using specialised orthorectification software.

  • Site plans and construction progress
  • Surveying/measurements
  • Asset identification and virtual survey

Topographic Survey and Volumetric Measurements

3D point clouds can be further developed and interrogated using specialist software to produce topographic (contour) maps and surfaces.  Surfaces can be compared to enable volumetric calculations.

  • Site plan
  • Stockpile measurement

ROV Survey

Zenith also own an ROV for underwater inspections providing photo and video images.

  • Hydro scheme inspections
  • Jetty inspections

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