uploaded by Chris Dodds - Thorne & Derrick Sales/Marketing Manager
Safe Electrical Isolation
Thorne & Derrick International, a Panduit Channel Partner, based in the UK and Specialist Distributors of Electrical Safety Equipment are delighted to provide this following Product Endorsementof Panduit Verisafe by Craig O’Neill of Steve Willis Training Ltd.
Initially sceptic but nevertheless open-minded Craig wanted to learn more – so we arranged a product demonstration.
” Verisafe is an electrical safety product manufactured by Panduit that automatically isolates electrical control panels and distribution boards.The risk of arc flash is an incredibly dangerous problem – arc flash incidents and blasts can vaporise someone in a split second. Having worked in substations for the early part of my career I was always terrified of being responsible for electrical isolation. One false move and it’s too late.” comments Craig.
“Verisafe eliminates 99.999% of this risk and should be implemented to every panel as a first step to isolation procedures. My concerns initially was the device picking up inductive back emf and other induced currents but the demonstration carried out by Glen Bate (Panduit IEI Account Manager) proved it can detect these.”
“Verisafe even detects when a phase has lost connection!”
“I am very good at finding product faults or shortcomings but so far I’ve found none.”
“The electrical safety device needs maintenance like any product but if put in a professional environment, this could easily be implemented into regular checks. Safe electrical isolation is a lesson we drum into our learners at Steve Willis Training Ltd because high standards of professionalism is at the heart of what we do. Electrical safety is at the forefront of being a professional and so it fits right in with our ethics and we were very pleased to have Glen Bate visit and discuss it with us. The students really had a good think about safe isolation after he left and it really helped move the us up a peg on the professional ladder.”
SWT Specialists In Building Engineering Services Training
Who Are Steve Willis Training Limited?
We are specialists in building engineering services training with over 18 years’ experience at our first class training centres in Burgess Hill, West Sussex and Portchester, near Portsmouth. Our training ranges from short courses for tradespeople to full apprenticeships and retraining for those leaving the armed services.
We treat you as an individual, finding the perfect course to suit your needs based on your requirements, experience and qualifications – we’ll never sell you a course you don’t need. We have an excellent reputation – most of our business comes from repeat customers and personal recommendation – and we are approved by all the industry bodies.
We are proud to be an EU Skills approved centre for our IGEM/IG/1 compliant gas managed learning programme, City & Guilds approved for our electrical training, and an OFTEC approved oil training centre.
Steve Willis Training Ltd
Unit F2, Sheddingdean Industrial Estate
Marchants Way, Burgess Hill
West Sussex, RH15 8QY
— SteveWillisTraining (@Steve_WillisLTD) June 12, 2019
Thorne & Derrick
T&D are Specialist Distributors to UK Distribution Network Operators (DNO’s), NERS Registered Service Providers, ICP’s and HV Jointing Contractors of an extensive range of LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt– this includes 11kV/33kV/66kV joints, terminations and connectors for both DNO and private network applications.
Contact our UK Power Team for competitive quotations, fast delivery from stock and technical support or training on all LV-HV products.
Climate change and global warming will drastically impact daily life in the coming years and make it possible to work, travel, and safely extract and transport raw materials in the Arctic.
Recent US Geological Survey studies estimate that the Arctic accounts for about 13% of undiscovered oil, 30% of undiscovered natural gas, and 20% of undiscovered liquefied natural gas. Alaska-based mining is a $1 billion dollar business (largely from zinc), while Canada produces half a billion dollars of zinc, gold, lead, silver and iron ore.
A new Canadian mining project will build 150 km of railways and two new ports to access some $23 billion worth of iron ore 300 miles inside the Arctic Circle. Meanwhile, Northwest Russia continues to mine 25% of the world’s known minerals in hundreds of deposits.
The Arctic is currently the source of 10% of the world’s oil production and 25% of its gas production, with Russia alone producing 80% of its oil and 90% of its gas in high northern latitudes. Already, hundreds of oil and gas production sites are operating offshore and onshore in the North American and Eurasian Arctic regions.
ICEFLEX Cable from Nexans
The Far North contains 22% of the world’s undiscovered recoverable resources. Dozens of geographical sectors are now being prospected in the Mackenzie Delta−Beaufort Sea Basin, the Sverdrup Basin and the Barents Sea (e.g. the vast Shtokman field).
Once new resources are found, special technologies will be needed to adapt to Arctic conditions to assure safe and secure production, both off and onshore, and ensure environmental safety.
Accessibility to resources via northern shipping lanes requires a new generation of tankers, containerships, LNG carriers, deep-sea drilling and FPSO ships, supply ships, prospect and scientific vessels and even cruise ships for tourism. Also, oil & gas and mining needs rolling stock and port facilities which can function safely and reliably under extreme cold conditions.
Nexans ICEFLEX Cable
Technical Specification
Cable Construction Details
Conductor
stranded tinned annealed copper as per IEC 60228, Class 2 and Class 5
Insulation
halogen-free ethylene propylene as per IEC 60092-360, HF-EPR
Inner sheath/Bedding
extruded flame retardant halogen free compound (Inner sheath: halogen free thermosetting compound as per IEC60092-360, SHF2)
Armor
metal wire braid as per IEC 60092-350
Outer sheath
flame-retardant thermosetting compound PKCK: halogen-free thermosetting com-pound as per IEC 60092-360, SHF2
A Cable For All Seasons, Conditions & Applications
As a ship designer, engineer, shipyard, installer, or offshore/onshore refinery, you want high-performance marine cables that will:
meet the challenge of severe cold, storms and iceberg threats
operate reliably in icy, snowy conditions for a variety of technical applications
survive in exposed conditions onboard, topside or in frozen ground or permafrost
adapt to abrupt temperature variations during the Spring and Autumn period
safeguard the Arctic environment from chemical and biological threats
protect crew, platform workers and personnel from fire, smoke and dangerous gases
assure higher productivity and competitiveness in tough conditions
support all exploration, extraction, refining and transportation activities
provide sustainable new technologies for the economic viability of Arctic projects
Meet The Arctic Challenge
The Nexans Research Center has already developed various rubber-based cable products to operate at very low temperatures for shipbuilding, offshore, rolling stock, and wind turbine applications.
Understanding and mastering the factors determining the low-temperature resistance of halogen-free flame retardant rubbers was the key to success.
To meet the Arctic challenge, Nexans introduced the innovative ICEFLEX technology for ultra-cold cables. This is the first marine energy cable on the market qualified for use at -50°C. Normally cables become stiff and brittle in intense cold. However, this rubber-based cable remains highly flexible and resistant, while ensuring advanced fire performance.
ICEFLEX ultra cold cable meets the Arctic Challenge
ICEFLEX operates reliably in icy, snowy conditions for a variety of technical applications. It can survive in exposed conditions onboard, topside or in frozen ground or permafrost, and can adapt to abrupt temperature changes during the spring and autumn period, while protecting crew, platform workers and personnel from fire, smoke and corrosive gases.
The ability to comply with impact and bending tests at very low temperature, to withstand the aggression of chemical substances (from gear, hydraulic fluids to mineral oils) and not propagate fire are other outstanding achievements.
ICEFLEX will ensure that resources are extracted and transported safely to assure the sustainable development of the Arctic North. Nexans has already helped ice-protect the Prirazlomnaya stationary oil platform in the Barents Sea with ICEFLEX.
ICEFLEX for shipbuilding & offshore/onshore
Nexans new ultra-cold-resistant rubber cable was designed for all shipboard and offshore/onshore applications. Not only can it maintain its properties down to -65°C, it is also fire-retardant and resists oils and aggressive chemicals and fluids.
The ability to withstand these environmental constraints is a major technical achievement which will make it easier to safely develop new oil and gas fields, shipping routes and refineries in the High Arctic.
ICEFLEX HFFR cable
Halogen-Free Flame & Fire Retardant (HFFR) cable is widely specified in shipbuilding and the oil and gas industry.
This product is fully certified by RMRS and is now commercially available to shipyards and refinery builders worldwide.
Benefits of Nexans ICEFLEX ultra-cold cable
flexibility and high mobility is maintained down to -65°C and more for the life cycle of the cable
EPR hydrocarbon rubber insulation combines unique electrical performance with mechanical toughness and resistance to atmospheric agents (ozone, UV, heat, etc.)
EVA elastomer in the outer sheath resists the deteriorating influence of oils, chemicals, heat and extreme weather aggression
fire-retardancy: the cables do not propagate smoke, fire, or generate toxic gases for personnel, and corrosive gases which can damage equipment
fire-resistance: they maintain power supply for vital safety equipment (emergency lighting, alarm systems, fire pumps, communication circuits, etc.)
high impact-resistance at ultra-cold conditions, meaning that they will neither crack nor break when subjected to sustained or violent physical shock (vibration, operational stress, iceberg impact)
safety and security for all exploration, extraction, refining and transportation activities
Thorne & Derrick
T&D are Specialist Distributors to UK Distribution Network Operators (DNO’s), NERS Registered Service Providers, ICP’s and HV Jointing Contractors of an extensive range of LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt– this includes 11kV/33kV/66kV joints, terminations and connectors for both DNO and private network applications.
Contact our UK Power Team for competitive quotations, fast delivery from stock and technical support or training on all LV-HV products.
uploaded by Chris Dodds - Thorne & Derrick Sales & Marketing Manager
Subsea Cables
This document describes a Nexans standard MV Medium Voltage subsea power cable.
Optical fibres can be included upon request. Utilising the common nomenclature U0/U(Umax)1, the following voltage ratings are covered in this Subsea Cabledocument:
U0/U(Umax) = 3 Phase Core 11kV 6/10(12)kV
U0/U(Umax) = 3 Phase Core 24kV 12/20(24)kV
U0/U(Umax) = 3 Phase Core 33kV 18/30(36)kV
Fibre Optic Core: Multiple single mode fibres (G652) are encapsulated in a protective steel tube together with a hygroscopic filling compound. The final diameter of the FO element is tuned to match the primary interstice of the main assembly by extruding an outer polyolefin cable sheath.
Cable Armour: Protective layer(s) of galvanised steel wires is applied over the inner covering. Interstices are filled by bitumen for corrosion protection – these can be prepared using approved cable cleaners. The cable armour provides axial stiffness and crush resistance. Steel wire dimensions are according to IEC60502-2 section 13, and steel wire properties according to EN10257-2 and EN10244-2. A number of steel wires can be replaced by zinc wires for additional corrosion protection.
Arc Flash Inflicts Serious Electrical Burns- HSE Image Of Accident Scene
By Grant Prior for Construction Enquirer
Construction Enquirer is an online only magazine focusing on the latest news stories, contract opportunities and job vacancies – Completely Free.
Arc Flash
Two companies have been fined after a worker received serious electrical burns caused by an arc flash during demolition work.
Chelmsford Magistrates Court heard how on April 12 2017, two demolition workers employed by sub-contractor R B Haigh & Sons were removing electrical distribution equipment from a switchgear room at the former Molecular Products site in Thaxted, Essex.
Alan Banks had been told by the principal contractor that the electrical equipment had been isolated. To reassure his colleague that it was safe he threw a crowbar at the 400V ac equipment.
This came into contact with live exposed wires, causing a flashover and temperatures of several thousand degrees, followed by a subsequent fire.
As a result Banks suffered serious burn injuries and was immediately hospitalised.
An HSE investigation found that the task being undertaken had not been properly planned and suitable control measures were not implemented to ensure the isolation of the electrical power supply.
The principal contractor, A J Wadhams & Co Ltd failed to follow the clear procedures outlined in their risk assessments and method statements, which identified all equipment must be treated as live unless written authorisation proved otherwise.
Russell Haigh and Stuart Haigh (Partners of R B Haighs & Sons) of Thaxted, Essex, pleaded guilty to safety breaches and were fined £80,000 and ordered to pay costs of £3882.65.
AJ Wadhams & Co Limited trading as Wadham Homes of London also pleaded guilty to safety breaches and was fined £80,000 and ordered to pay costs of £3816.60.
After the hearing HSE inspector Adam Hills said “This incident has had a significant impact on Mr Banks life and the injuries could so very easily have been fatal.
“Had the companies followed the control measures outlined in their respective risk assessments, then this incident would not have occurred.
“Never assume that an electrical supply is disconnected. Always check with the Distribution Network Operator or a qualified electrician to obtain written proof of isolation before commencing work.”
ARC FLASH STATISTICS
30,000 Arc flash incidents per year
7,000 Burn injuries per year
2,000 Hospitalisations per year
400 Fatalities per year
“30,000 Arc Flash Incidents per year” Source: ISHN
How To Protect Yourself Against Arc Flash
Arc flash protection is provided by specialist clothing and garments for “head-to-toe” protection – everything from arc flash coveralls to arc flash trousers.
Enhanced and effective arc flash protection is safely achieved by wearing layers of protective clothing and garments manufactured from inherent fibres and which feature specific Arc Flash resilient components. Without the correct high-quality garments, arc protection levels will be compromised.
uploaded by Chris Dodds - Thorne & Derrick Sales & Marketing Manager
STFF
Smoke, Toxicity, Flame, & Fume Protection For Cable Joints
3M STFFShield products are designed for use with all inline polymeric cold shrink and resin cable joints – this includes LV, 600/1000 volts, 3.3kV, 6.6kV, 11kV and 33kV cable joints and cable abandonment kits. 3M STFF Shield is suitable for single and three core polymeric cold shrink joints, as well as for cable abandonment applications at low voltage.
The addition of the 3M STFF Shield will allow standard cable joints and accessories to be installed in areas such as underground rail, tunnels and any application where flame retardant, low toxicity cable jointing solutions are required with fire resistance.
3M STFF Shield products have been approved for London Underground LU Standard 1-085 and the universal joint protection system complies with Section 12 of the London Underground Network – the product range is commonly known as the Smoke, Toxicity, Fire and Fumejoint sleeve or STFF.
S– Smoke
T– Toxicity
F – Fire
F – Fume
The 3M STFF joint protection sleeve include standard sleeve for cable joints, a closed-end sleeve for cable abandonment applications as well as a retrofit wrap to wrap around cable joints that have already been installed.
Fire Resistant Shield for Joints & Cables In Rail Tunnels
3M STFF Shield Product Features & Benefits
3M STFF Shield products are made up of layers of woven glass fabric, and high temperature silica to enable flame resistance, and prevention of smoke, and toxic fumes
Halogen Free
Manufactured in several sizes enabling compatibility with a wide range of 3M Cable accessories
Easily secured in place with integrated fastening straps, no need for cable ties or tools
3M STFF are available as a sleeve design for covering cable joints, or a closed end covering for cable abandonment applications
Available as a wrap around design for retrospective fitting around cables already installed
Used with Cold Shrink Joints Manufactured by 3M Electrical
3M STFF used in conjunction with Cold Shrink joints provide halogen free and fire resistant joints suitable for installation onto cable containment – the STFF joint is compact and smooth profile with reduced space displacement and weight impact.
This type of cable joint is not suitable for direct burial (underground) as the STFF protective shield will absorb moisture.
LCI Joint Kit 16.2mm-33.1mm – Order Code 3M LC1-STFF13
LC2 Joint Kit 16.2mm-33.1mm – Order Code 3M LC2-STFF13
LC3 Joint Kit 16.2mm-33.1mm – Order Code 3M LC3-STFF13
LC4 Joint Kit 24.9mm-56.4mm – Order Code 3M LC4-STFF14
LC5 Joint Kit 37.8mm-84.3mm – Order Code 3M LC5-STFF14
LC6 Joint Kit 37.8mm-84.3mm – Order Code 3M LC6-STFF14
Cold Shrink LC Joints by 3M Electrical
Network Rail & London Underground Approvals
Compliant with London Underground Engineering Standard 1-085. Product Approval List No: 1106
Network PADS Approved Product: PA05/04396
Smoke Emissions and Toxic Fume Emission testing has been carried out to BS EN50268-2:2000 and BS 6853:1999 Annex B.2 respectively.
3M STFF Cable Joint Shield
Installation
The STFF Shields are supplied only as part of the cable joint / accessory kit from 3M. The sleeve is slipped onto one of the cables ready to be joined and parked back along the cable.
The cable joint is made off in the normal way and the STFF sleeve is now slid over the joint and held in place by two stainless steel cable ties, one at each end.
Full installation instructions are supplied with each 3M Electrical kit.
LV Cable Joints (Low Voltage Cables)
Thorne & Derrick stock and distribute LV Joints in Cold Shrink, Heat Shrink or Resin Cast technologies – multicore and multi-pair cable joints are available for immediate backfill and energisation of Low Voltage power, control and instrumentation cables 600V/1000V 3.3kV.
centres in Burgess Hill, West Sussex and Portchester, near Portsmouth. Our training ranges from short courses for tradespeople to full apprenticeships and retraining for those leaving the armed services.
