Thorne & Derrick, the UK’s leading Industrial & Process Heating Equipment Distributors, have successfully designed and delivered a customised electrical heating solution to protect vital power supplying crane and lifting operations on sub-zero Antarctic missions.
The customised electrical insulating and heating jackets provide effective winterisation to crane Hydraulic Power Units (HPU’s) on board the RRS Sir David Attenborough.
Thorne & Derrick supply UK and international clients with fit-for-purpose, reliable and safe electrical heating products for severe, hostile environmental conditions.
Frost Protection
Survey Design Deliver
Thorne & Derrick were contacted by their Marine & Offshore client due to concerns raised about the potential risk of critical damage caused by freezing to the on-board crane HPUs.
Several alternative heating methods were evaluated but the client needed to maintain ease of access to the HPUs for routine inspection and maintenance. After conducting a site survey and addressing all clients operational and technical requirements the design heat loss calculation by Thorne & Derrick’s Heating Design Engineer proposed removable customised heating jackets as the most cost effective and optimal electrical solution.
Removable | to facilitate unobstructed and instant maintenance access to the HPU’s the electrical heating jackets featured simple fasten-on sections.
Customised | tailor-made and versatile surface heating solutions for harsh and hazardous locations in the marine and offshore industries.
Service | we design, develop and arrange manufacture of high performance, reliable and optimised electrical heating solutions.
Cammell Laird
Cammell Laird offers the most comprehensive engineering facilities in the United Kingdom. Expanding on their heritage in the marine shipbuilding, refit, repair and conversion market, with facilities and a workforce that can undertake a massive range of engineering projects.
The company was founded in 1828 and is based on the River Mersey in the Liverpool City Region on the west coast of Great Britain – the modern facilities support heavy fabrication and specialist engineering throughout Europe.
Facilities include one of the largest modular construction halls in Europe and an extensive network of covered workshops with direct sea access and four dry-docks.
Cammell Laird has an illustrious history of building aircraft carriers and over the years has built many famous ships.
Specialists to the Process & Hazardous Area Industries
Industrial & hazardous area
Electrical Heating Specialists
We supply from stock an extensive range of Electrical Heating Equipment for industrial and process heating applications. We produce custom silicone heaters for rapid and high temperature heat-up of complex shapes and surfaces – from concept, design to the delivery of standard or bespoke heaters on the shortest lead times. From the largest UK heat tracing cable stocks we deliver Trace Heating Systems for pipe frost protection, ramp heating, roof/gutter snow melting and de-icing – enquire about our in-house design service.
Thorne & Derrick International, based in the UK, are the leading stockists and suppliers of industrial, hazardous area and explosive atmosphere electrical heaters from market-leading brands including EXHEAT, Hazloc, Thermon, Isopad and Chromalox – ATEX, IECEx, EAC Ex and North American classification heaters are available to provide safe and reliable electrical heating in accordance with international hazardous area certifications.
EXPERTS IN WINTERISATION SOLUTIONS FOR INDUSTRIAL & HAZARDOUS AREA ENVIRONMENTS
Thorne & Derrick hold the largest UK stocks of frost protection & winterisation equipment to help keep your plant and personnel operational during the winter months.
Thorne & Derrick understand that prolonged periods of low ambient temperatures can bring operations to a standstill costing thousands of pounds in lost downtime.
Experts in heating solutions for use in industrial & explosive atmospheres, Thorne & Derrick have the knowledge & expertise to help clients prevent unnecessary down time this winter.
We can provide overnight delivery of Trace Heating Cables at the most competitive prices to guarantee frost protection of your pipelines and mechanical services.| Ask About Our Heat Trace Design Service.
💡 Contact us today and our skilled and friendly team can provide technical support as well as reliable, fit for purpose and compliant solutions to suit your exact requirements.
➡See our Winterisation blog TOP PICKS, including our most read articles about Trace Heating and the requirement for electrical heating products and systems to combat and mitigate Winter weather effects.
Republished with the kind permission of Raytec | LED Technology Lighting for Hazardous Areas
Raytec are world leaders in LED lighting for hazardous area environments – the Raytec SPARTAN range of hazardous area ATEX certified lighting is globally certified Ex LED lighting, approved for all ATEX and IEC Ex Zone 1 and Zone 2 hazardous area environments, including UL /CSA C1D2 installations.
Lighting Hazardous Areas
Raytec Ex lighting has transformed a 58-megawatt grid connected power plant, located near Port Moresby in Papua New Guinea. Working with Australian distributor Pacific Automation, and leading Australian engineering and construction company Clough (in consortium with Wartsila) SPARTAN LED Ex luminaries, including High-Power Floodlights, High-Power Bays, Linears and Bulkheads, have been installed on-site.
The plant’s preliminary lighting design could be improved in terms of eliminating inefficiencies in both its carbon footprint and ongoing maintenance.
Raytec completed a site wide lighting design for a hazardous area and industrial lighting upgrade, that promoted considerable cost and power saving benefits as well as a safer, more effective working environment.
Our SPARTAN Linear, Bulkhead, High-Power Flood and High Power Bay luminaires were chosen to illuminate Port Moresby Power Station in Papua New Guinea.
A high-quality lighting solution was essential for the functionality and safety of this site. Our award-winning, free lighting design service helped to develop the perfect solution, ensuring all the required lux levels were met.
Detailed Hazardous Area Lighting Design
Raytec’s free lighting design service played a major role in developing the perfect solution for this power station. A detailed 3D lighting design plan was created to provide the client with a visual representation of what the final solution would look like, demonstrating lux levels and the spread of light that will be achieved in and around the Power Station.
When it came to installation, the detailed design report provided the perfect guidance to the installers to ensure the correct mounting positions and angles were achieved. This lighting design gave the client peace of mind that Raytec products would achieve the desired illumination outcome.
It’s safe to say that there’s little difference between the lighting design produced and the actual images of the completed site, demonstrating the quality and accuracy of Raytec’s lighting designs. All lighting designs were generated remotely, using the site drawings provided by the client.
Ex Lighting Design
“I worked closely with Pacific Automation and Clough from the initial project concept to delivering the complete solution. The designs delivered an accurate, full 3D site plan, with a realistic visualisation and precise professional calculations. Our continued support resulted in the client having no worries about the outcome of the final installation. They showed great appreciation for the service we provided. It was great to be so involved in this project and it’s wonderful to see how similar the actual images look to my lighting designs”, comments Siming Li (Senior Lighting Designer at Raytec).
Reliability and Maintenance
All luminaires in the SPARTAN range are designed around the LEDs using a bespoke housing which offers excellent reliability and optimum performance. This, combined with a unique maintenance friendly design, were other key factors for the Clough engineering team in specifying Raytec products. Featuring a modular design which allows key components to be removed and replaced independently, meant the Power Plant could maintain lighting on-site, reducing downtime and long-term costs.
Ex Lighting
As a result of the multi-faceted nature of the project, both hazardous area and industrial light fittings – including SPARTAN High-Power Floodlights, Linears, High Bays and Bulkheads – were installed across the plant’s engine hall, compressor room and building exterior. By utilising the full range of Raytec SPARTAN LED Luminaires, a tailored solution that provided ideal illuminance for the plant environment as well as IECEx compliance was implemented.
Raytec’s lighting technology, delivering the required performance of power output, reliability and minimal maintenance, combined with Pacific Automation’s technical support and long-standing relationship with Clough, were significant factors behind the success of this project.
HAzardous Area Lighting Considerations
Hazardous Area Lighting Design
Lighting design is an essential part of specifying lighting for an offshore wind application.
With numerous turbines across one site, achieving the correct light levels on-site will improve safety and efficiency across the turbine. For specifiers going through the initial design process, a lighting design will provide peace of mind that the final solution will achieve the required, on-site lighting goal, with no surprises at the point of commissioning.
Thorne & Derrick’s hazardous area lighting design service is completely free of charge, providing you with a visual 3D representation of the final lighting solution, with detailed lux levels and a true indication of lighting performance. Our lighting design experts will guide you through the entire process, ensuring the optimum solution is achieved.
leaders in ATEX Innovation To The Hazardous Area Industries
Thorne & Derrick are leaders in the development and distribution of Product Innovations that deliver significant improvements to clients plant, people and operational safety in the explosive atmosphere industries.
Your proactive problem solvers experienced in succession planning for the replacement of obsolete, non-conformant and legacy equipment in hazardous areas.
Your first-choice provider of innovative and competitive solutions to ensure ATEX & IECEx Compliance for Hazardous Area Electrical, HVAC & Process Instrumentation Equipmentto UK and international projects.
Follow our Showcase Page on LinkedIn to receive hazardous area product innovations, industry news, whitepapers, videos, technical tips and training webinars for professionals involved in the explosive atmosphere industries.
Thorne & Derrick continue to bring ATEX Innovations to the Oil & Gas industry.
Appearing this month on the front cover of Platform magazine are our new Portable Heating & Ventilation solutions for use offshore.
As Main Distributors for EXHEAT & Woodcock & Wilson Ltd we distribute ATEX & IECEx portable ventilation fans and electric heaters to improve safety, increase reliability and optimise productivity in explosive atmospheres
October Webinars
Due to COVID restrictions, T&D will be carrying out three webinars during October to demonstrate the products and answer any technical questions. For more information, please contact Terry McDonald 0191 410 4292.
HAZARDOUS AREA FAN HEATERS
ATEX CERTIFIED | UP TO 40KW
High Power Temporary Heater
A major development in offshore and hazardous area heaters sees the launch of the LFH high power fan heater. The first heater in the world to combine high power and ducting options to get heat where you need it.
Existing fixed fan heaters have always offered high power and impressive heat up performance but it has never been possible to add ducting to these heaters. This is because the ducting disrupts the airflow and can cause such heaters to overheat. It is always stated as a special condition of use on any EX certificate for such heaters, that ducting must not be added. The LFH is a gamechanger. This heater provides class leading heat up, air flow and can be ducted front and rear.
EXHEAT LFH Hazardous Area Fan Heater Can Be Ducted Front & Rear
Zone 1 & Zone 2 (IIB) | T2 T3 & T4 Temperature Classes
Designed specifically for the offshore industry and harsh industrial environments. incorporating a stainless steel casing for added toughness and durability, the LFH electric fan heater is designed to operate in ambient temperatures of -40°C to +40°C,
Certified to the new EN 80079-36 and EN 80079-37 standards for constructional safety, the EXHEAT LFH is supplied ready to ‘plug and play’, with the option of fitting a plug, or hard wiring to an isolator unit.
Depending on the heater model selected, inlet air temperatures can be increased by up to 46°C. Heaters are available up to 40kW output and provide class leading, energy efficient heating solutions for both onshore and offshore applications. The LFH Fan Heater combines superior electrical heating efficiency with simple functionality to provide a next-generation heating solution for use in hazardous area environments where the explosive atmospheres could be present.
EXHEAT MFH Fan Heaters – Applications
Fuel servicing areas
Chemical plants
Offshore installations
Battery stores
Gas installations
Containers
Explosive stores
Paint / solvent stores
Dusty environments
Sugar refineries
Firework factories
Ammunition depots
Portable washdown heaters
Heating and drying manholes prior to spraylining
OFFSHORE HEATER VARIANT
Certified and modified for offshore applications.
Following the launch of the MFH Bulldog, Thorne & Derrick have worked in close collaboration with the offshore oil and gas industry – this includes exploration and production companies, engineering contractors and ATEX compliance inspectors to ensure the heater was fit for purpose. This process involved gaining feedback on the basic design and taking advice on what users needed to comply with offshore regulations for safe use of portable equipment. The offshore model has now been developed and received an Offshore Inspection Release Notice.
The Bulldog heater is now currently being used on assets owned and operated by some of the largest international O&G companies including BP, Shell, Apache and Total.
WORLDS FIRST ATEX & IECEX CERTIFIED PORTABLE VENTILATION FAN
Certified to Electrical & Non-Electrical Standards (Mechanical)
The Exstream range of 3rd Party Certified Portable ATEX Fans are manufactured by Woodcock & Wilson and Distributed by Thorne & Derrick.
The independently dual certified IECEx & ATEX portable ventilation fans are certified to both Electrical & Non-Electrical standards for safe ventilation of hazardous area workplaces and potentially explosive atmospheres – providing a world wide safety solution.
Class Leading Airflow: Up to 7750m3/hr
Robust: Mild Steel or Stainless Steel Casing
Low Power Consumption: <8A FLC
Low Noise Output: 49db
Easy to Use: Plug & Play Fan
Voltage Options: 110V/230V & 3-Phase Options Available
This year has seen the launch of a new ATEX & IECEx certified portable ventilation fan.
The fan is simple to use and low maintenance. Made from mild steel or stainless steel, it is designed specifically for harsh industrial environments and offshore use. With class leading airflow, noise output and low power consumption.
Exstream fans are the market-leading ATEX fan to provide powerful and portable ventilation in hazardous areas – specified for safe and reliable extraction and blowing of dangerous gases and vapors in explosive atmospheres with airflow capability up to 7750m3/hr.
Both ATEX & IECEx certified to Electrical & Non-Electrical Standards (Mechanical)for Zone 1 & Zone 2 ventilation applications.
FAN FEATURES
UP TO 7750M3/HR AIR FLOW RATE
Zone 1 & Zone 2 ATEX fans certified for hazardous area ventilation
Available with compatible range of ducting, couplers and adaptors
Fans are independently dual certified to ATEX & IECEx
4 standard portable ventilation fan sizes plus tailored designs
Class leading airflow
Easy to use (plug & play) with integrated stop/start
Fully portable ATEX fans
Power lead (5m) with plug. Alternative plugs available on request
Follow our Showcase Page on LinkedIn to receive hazardous area product innovations, industry news, whitepapers, videos, technical tips and training webinars for professionals involved in the explosive atmosphere industries.
leaders in ATEX Innovation To The Hazardous Area Industries
Thorne & Derrick are leaders in the development and distribution of Product Innovations that deliver significant improvements to clients plant, people and operational safety in the explosive atmosphere industries.
Your proactive problem solvers experienced in succession planning for the replacement of obsolete, non-conformant and legacy equipment in hazardous areas.
Your first-choice provider of innovative and competitive solutions to ensure ATEX & IECEx Compliance for Hazardous Area Electrical, Heating & Ventilation and Process Instrumentation Equipmentto UK and international projects.
Gas insulated high voltage switchgear (GIS) is a compact metal encapsulated switchgear consisting of high voltage components, including circuit-breakers and disconnectors, which can be safely operated in confined spaces.
Sulphur Hexaflouride (commonly referred to as “SF6”) is an inorganic, colourless, odourless, non-flammable, heavy gas that has exceptional electrical insulation performance.
Gas detection is specifed for safe monitoring and measurement of SF6 levels on HV & EHV Gas Insulated Switchgear (GIS) and Transformer rooms, 66kV-220kV. Detectors are located inside protected switchgear rooms to provide accurrate monitoring of gas concentrations – usually located in the local gas detection panel, fire protection system or control panel.
SF6 Rules OK!
Sulphur-hexafluoride (SF6) is an excellent gaseous dielectric for high voltage applications that does not react with materials commonly used in high voltage circuit breakers, substations and electrical equipment in the power industry. The combined electrical, physical, chemical and thermal properties offer many advantages when used in HV power switchgear :
high dielectric strength
unique arc-quenching ability
excellent thermal stability
good thermal conductivity
SF6 Gas In MV & HV Switchgear
SF6 gas has virtually replaced oil and air as the dielectric insulator in medium (MV) and high (HV) circuit breakers, switchgear, gas-insulated substations and electrical equipment.
Despite SF6 being an inert gas during normal use, when electrical discharges occur through the operation of high voltage equipment insulated with SF6, highly toxic by-products are produced that pose a serious health threat to workers.
Furthermore, SF6 gas has been identified as the most potent and persistent greenhouse gas in existence with a global warming potential.
“In addition to protecting personnel from toxic gas risk, installing F-Gas detectors in HV switchgear applications offers a number of benefits,” states Andy Avenell, Fixed Gas Detection Systems Business Development Manager, Crowcon Detection Instruments. “It provides an early warning that the gas is leaking and thus maintains system efficiency and reduces potentially huge gas replacement costs. It enables the supplier and user comply with the relevant sections of the mandatory F-gas regulations. It also helps to reduce the risk of leakage of powerful greenhouse gases into the environment.”
Crowcon F-gas provides a lower total cost of ownership by providing fast, stable and dependable SF6 gas detection performance with infrared technology.
Crowcon F-Gas SF6 Gas Detector
In EU regulation 842/2006, leakage control and regular checks on fluorinated greenhouse gases (F-gases) usage are mandated.
Effective monitoring and detection of these gases is essential. SF6 has a very high Global Warming Potential (GWP), 22,200 times higher than CO2.
Therefore, a small amount in the atmosphere can have a large effect on global temperatures.
Although SF6 is not generally considered toxic, it has an short term exposure limit of 1000ppm. As the gas is so heavy in comparison to air, it is also considered by some to present a substantial suffocation risk, because once inhaled, it is hard to expel from the lungs.
Gas leakage can also mean a substantial economic cost to the industry, since F-gases are very costly chemicals to replace.
The Crowcon F-Gas Detector utilises a high quality infrared (IR) sensor specifically calibrated to detect the F-gases commonly in use. The tri-coloured LEDs that indicate the operating status make it is easy to operate. Push-button controls facilitate simple adjustments like zeroing and calibration.
The Crowcon gas detector product requires very little maintenance; a bi-annual gas check can be quickly and easily performed using the keypad and indicator.
Housed within an IP54 rugged enclosure, as part of a compliance system, these Crowcon F-Gas Detectors are usually connected to a building control system.
The output signal can be set to suit virtually any control system – it operates from 24Vdc nominally, and provides a 4-20mA signal.
As there are no consumable parts within the Crowcon F-Gas detector, product longevity and service is guaranteed.
T&D, an approved distributor for Crowcon, can help with any of your gas detection requirements – contact us today.
SF6 Gas Detection In Confined Spaces – Expert Opinion
Command Training Corps are specialists in Confined Space training, standbys and consulting – they exist to make dangerous work safer. CTC staff are rescue professionals who have dedicated their lives to being on the cutting edge of best practices in Confined Space work.
We therefore asked Dan Hudson (Owner – Command Training Corps) to provide expert advice and insight into the risks and detection of SF6 gas.
“A standard 5-gas monitor configured for confined spaces would not be sufficient to adequately monitor a space that has housed SF6, or is adjacent to SF6 housing, because traditionally it would not have an F-Gas sensor. If entry were to be made for repairs or maintenance, monitoring for SF6 would be critical as the gas will displace air, resulting in an asphyxiation hazard for workers.”
“Equally problematic is that SF6 will, under normal operating conditions, produce hazardous decomposition products when exposed to electrical discharges. The most dangerous of these fluoride by-products is disulfer decafluoride, a colourless gas or liquid that is highly toxic, but produces few immediate physical side effects, making it difficult to detect exposure. To make matters worse, it doesn’t take much S2F10 to cause harm; the Permissible Exposure Limit – TWA is only .025 ppm and 1 ppm is considered Immediately Dangerous to Life or Health (IDLH). Therefore, always treat a space that could have SF6 in it as a legitimate atmospheric hazard and monitor for fluorides.”
“When performing gas monitoring on a confined space, remember to obtain readings before ventilating the space; once ventilation has begun, it may be extremely difficult to detect an active leak. Even when a confined space has been determined to be clean, best practices call for the space to be continuously monitored and ventilated while entry is being performed.”
“In addition to using an F-Gas Detector, confined spaces with a potential exposure to SF6 should be monitored for their O2 content (remember that if there is less than 20.9% O2, something is displacing the oxygen). Also, the presence of combustible gases should be monitored.When monitoring using a sampling wand, a helpful rule of thumb is to allow 2 seconds delay for every foot of tubing to the wand (consult your owner’s manual for the specs on your particular monitor).”
“Thus, monitor readings from a 10 foot remote sampling wand will have a 20 second delay. Make sure to measure each layer of the compartment (high, middle, low) long enough to determine an accurate reading. In the case of SF6, because it is 5 times heavier than air, it will behave almost like a liquid and flow into low spaces; extra care should be taken to measure the O2 levels in the lowest parts of the space.”
“As always, workers should determine the appropriate level of PPE when working in confined spaces. When working around SF6, if you encounter any powdery deposits, you should treat these as hazardous, toxic products of decomposition and quickly remove them with an approved vacuum fitted with HEPA filters.”
Gas Detection For Underground Cable Chambers
Putting safety first in the electrical contracting industry, irrespective of voltage, necessitates a responsible attitude to gas detection.
For instance, Crannis Technology Services a leading UK based Electrical & Data Installation Specialist, use Crowcon Gas Detectors for safe working in underground cable chambers and confined spaces.
Darren Crannis (MD of CTS) comments : “CTS contract to the UK’s largest telecommunications provider for electrical inspection and installation works. It is compulsory that we use a 4-head gas detectors when accessing cable chambers, cable pits and confined areas.”
“We use Crowcon Portable Tetra-3 gas detectors, they are easy to use, have a long operation life (14 hours) and give a constant audio monitoring signal for peace of mind, as well as a 95dB audio detection warning if an alarm is triggered.”
“The risk of an unsealed cable duct causing a leakage of gas into a cable chamber, or poor oxygen levels could have a devastating effect on the health of our employees, so when accessing underground cable chambers and cable “pits” we use the Crowcon Portable Tetra 3 to first sample and check for harmful gasses and then to constantly monitor the air quality for the safety of our employees.”
Crowcon Portable Gas Detector – Tetra 3
4-head portable gas analyser which monitors
O2 Levels (Oxygen)
CH4 (Methane)
H2S (Hydrogen Sulphide)
CO (Carbon Monoxide)
Cable Chambers
When external cables reach a telephone exchange they enter the building via a large entry plate into an underground room called a cable chamber. In smaller exchanges the cables sometimes arrive in an underground chamber and then are fed to the MDF via a shallow cable trench.
Hazardous area industries including offshore oil/gas platforms and FPSOs, onshore oil refineries, processing plants, pipelines, storage farms and LPG/LNG plants all utilise or produce a wide range of hazardous flammable liquids and gases that can be detected using correctly specified flame and gas detectors.
Detecting toxic and flammable gases requires the detectors to be classified and certified according to the specific IECEx or ATEX standard – we distribute flame and fire detectors manufactured by Spectrex to operate in the harshest environmental conditions including self-contained stand-alone devices designed for direct connection to control and alarm systems or automatic fire extinguishing systems.
Our range of Hazardous Area Fire & Gas Detection Systemproducts also includes Explosion Proof Warning Systems & Hazardous Area Lighting – comprehensive range of intrinsically safe, flameproof and explosion proof alarm sounders, sirens, bells and horns, loudspeakers and beacons.
Guest Contribution from Daniel Hyland | Operations Director at OGV Energy
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Their printed publication “OGV Energy Magazine” is distributed in Aberdeen, Houston and Abu-Dhabi and is read online by circa 30,000 professionals every month.
Meanwhile their digital engagement is driven by OGV News, OGV Events, OGV TV and OGV Jobs Board. which can all be accessed via their website or their App via your smart device.
Why Join OGV Community?
In just over 24 months OGV Energy has become the Energy industries’ no 1 platform for industry news, events and jobs.
OGV Energy’s focus has always been to support the global supply chain within the Energy sector and with this in mind, we have launched the “OGV Community” concept, which will be an online subscription service which offers its members multiple benefits in terms of brand exposure, networking and business development opportunities, market information and job vacancy advertising on our industry job board for the energy sector.
We will provide you with your own company page on our new business networking directory which will allow your products, services and latest announcements to be shared amongst our growing membership.
Our monthly online events which are themed around the topic of “OGV Energy Magazine” will provide you with an opportunity to speak directly to the Energy supply chain and ensure that you are kept updated on the latest industry thinking and provide a regular live forum to develop business opportunities.
Join the OGV Community and engage with us across our multiple platforms to experience the value and return on investment that OGV Energy can bring, delivering your company value propositions directly to your target audience.
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Video calls for business development/networking
Free job advertising on OGV Energy job board
New sign-ups will be included in the OGV Energy magazine promoting your brand
Inclusion in the annual OGV Energy Supply Chain publication
Follow our Showcase Page on LinkedIn to receive hazardous area product innovations, industry news, whitepapers, videos, technical tips and training webinars for professionals involved in the explosive atmosphere industries.
Press Release Date: 02.04.2020 uploaded by Chris Dodds (T&D Sales + Marketing Manager) World’s First Fully Certified ATEX Doors Thorne & Derrick International, the Experts in Equipment for Explosive Atmospheres, today announce the signing of a Commercial Distribution Agreement...
Press Release Date: 04.07.2019 uploaded by Chris Dodds (T&D Sales + Marketing Manager) Category: Stockist Distributor Agreement Announcement Thorne & Derrick International announce that they have signed a Preferred Distributor Agreement with Raytec, the world leading manufacturer of LED...