Blog
Stringing 275kV (400kV) 3M ACCR Low-Sag Overhead Line (+Video)
March 2nd, 2021
Image Courtesy of: Tommy Edwards (Site Lead at AMEC FW).
Location: Scottish Power Energy Networks XY Route, Towers 04-47. Tower types are L2 L8.
“After 9 years I still have a real determination in making a long, safe and successful career in the overhead transmission and distribution industry.”
“The overhead line pictured below is twin conductor running 275kV but able to carry 400kV. The 3M ACCR Drake conductor leaves the high voltage substation at Kilmarnock South and spans approx. 15.5km terminating at Coylton, East Ayrshire,” says Tommy.

In the YouTube Video link above, 3M Product Specialist Colin McCullough discusses utility challenges and the 3M ACCR low-sag conductor.
To see accompanying images, view our Advanced Technologies in Composite Conductor Flickr Album.

Jointers blog
Subscribe now to our POWER NEWSLETTER– a monthly email circulation packed with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.
Includes access to our popular JOINTERS BLOG with contributions from utility professionals, linesmen and cable jointers working on MV HV EHV cables and overhead lines typically at 11kV, 33kV, 66kV and up to 132kV.
Jointer Training Course | LV3 – LV Transition Polymeric (Wavecon) to PILCSTA Cable
March 1st, 2021
Jointer Training Course
LV Jointer Training Courses
LV3 – LV Transition Polymeric (Wavecon) to PILCSTA Cable
This five-day course is aimed at an existing mate or electrician who has undertaken, or is in the process of undertaking, a suitable electrical qualification such as C&G 2322.
By the end of this LV3 – LV Transition Polymeric (Wavecon) to PILCSTA Cable course delegates will be able to:
-
Understand and demonstrate personal safety including the basics of on-site safety requirements, hand tools, resins and personal hygiene
-
Evaluate electrical test results and demonstrate the use of instruments
-
Demonstrate they can complete a transition main straight joint – Wavecon cable to PILCSTA three-phase cable
-
Demonstrate they can complete transition mains breeches/branch joint – Wavecon cable to PILCSTA three-phase cable
-
Demonstrate they can complete mains pot end PILCSTA mains cable three phase with a single-phase service connection
-
Demonstrate they can complete a multi-service breeches joint PILC/Consac
-
Demonstrate they can complete a service pot end PILC
-
Demonstrate they can complete a mains PILC pot end

Jointer Training Course | LV3 – LV Transition Polymeric (Wavecon) to PILCSTA Cable
ASM – Avonside Safety Management

Cable Jointing Training – Industry Leading Courses
Avonside Safety Management are industry leaders in the delivery of electrical safety training.
ASM have industry-leading expertise in cable jointing training. They can train a wide range of joint assembly on all commonly used HV and LV cables, catering from inexperienced operatives through to experienced jointers.
Their trainers have a wealth of industry experience and can offer tailored courses to suit your needs including tooling, cable types, joint types and procedures.
ASM have a dedicated training facility located in Redditch offering a market leading learning environment in both practical and classroom environments.
EUSR
Andrea Tompkins Training Manager at Avonside Safety Management
“Our courses have been endorsed by Energy & Utility Skills meeting the quality standards required by the utility industry.
The Energy & Utility Skills Register is a register of individuals’ training and skills.
Individuals that undertake training and/or assessment on a scheme or programme have this training recorded against their EUSR registration.
Individuals are issued with a unique EUSR ID number as well as a photo ID card upon successful completion – this card also displays the training or skills recorded on EUSR against the individual which can be verified online. EUSR registration is valid for a fixed period of time, usually three years and individuals are required to renew their registrations by undertaking the relevant training once their registration has expired.”

LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt
Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment – servicing UK and global businesses involved in cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.
THORNE & DERRICK Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV
Jointer Training Course | LV2 – LV Live Mains Cable Jointing Course
March 1st, 2021
Jointer Training Course
LV Jointer Training Courses
LV2 – LV Live Mains Cable Jointing Course
This five-day course is aimed at an existing mate or electrician that has undertaken, or is in the process of undertaking, a suitable electrical qualification such as C&G 2322.
By the end of this LV2 – LV Live Mains Cable Jointing Course course delegates will be able to:
-
Understand and demonstrate personal safety including the basics of on-site safety requirements, hand tools, resins and personal hygiene
-
Evaluate electrical test results and demonstrate the use of instruments
-
Demonstrate they can complete a Wavecon mains straight joint
-
Demonstrate they can complete a Wavecon mains straight joint with crossed cores
-
Demonstrate they can complete a breeches joint – Wavecon mains cable three-phase
-
Demonstrate they can complete a pot end – Wavecon mains cable three-phase – single-phase service connection
-
Demonstrate they can complete a cut-out termination – Wavecon mains cable – three-phase
-
Demonstrate they can complete Wavecon sheath repairs

LV2 – LV Live Mains Cable Jointing Course
ASM – Avonside Safety Management

Cable Jointing Training – Industry Leading Courses
Avonside Safety Management are industry leaders in the delivery of electrical safety training.
ASM have industry-leading expertise in cable jointing training. They can train a wide range of joint assembly on all commonly used HV and LV cables, catering from inexperienced operatives through to experienced jointers.
Their trainers have a wealth of industry experience and can offer tailored courses to suit your needs including tooling, cable types, joint types and procedures.
ASM have a dedicated training facility located in Redditch offering a market leading learning environment in both practical and classroom environments.
EUSR
Andrea Tompkins Training Manager at Avonside Safety Management
“Our courses have been endorsed by Energy & Utility Skills meeting the quality standards required by the utility industry.
The Energy & Utility Skills Register is a register of individuals’ training and skills.
Individuals that undertake training and/or assessment on a scheme or programme have this training recorded against their EUSR registration.
Individuals are issued with a unique EUSR ID number as well as a photo ID card upon successful completion – this card also displays the training or skills recorded on EUSR against the individual which can be verified online. EUSR registration is valid for a fixed period of time, usually three years and individuals are required to renew their registrations by undertaking the relevant training once their registration has expired.”

LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt
Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment – servicing UK and global businesses involved in cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.
THORNE & DERRICK Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV
Jointer Training Course | LV1 – LV Live Jointing Course, Single and Three Phase Services
March 1st, 2021
Jointer Training Course
LV Jointer Training Courses
LV1 – LV Live Jointing Course, Single and Three Phase Services
This five-day course is aimed at existing mates or electricians which have undertaken or are in the process of undertaking, a suitable electrical qualification such as C&G 2322.
By the end of this LV1 – LV Live Jointing Course, Single and Three Phase Services course delegates will be able to:
-
Understand and demonstrate personal safety including the basics of on-site safety requirements, hand tools, cable jointing resins and personal hygiene
-
Understand the basic principles and the use of test instruments including earth loop, Megger and test lamps and evaluate results
-
Demonstrate test procedures for resistance, continuity, earth loop and polarity
-
Understand visual cable identification (cable depths, markers, cable tiles)
-
Demonstrate live working procedures and when they are required
-
Understand when they can work on damaged/faulty apparatus
-
Demonstrate they can strip LV HV cables
-
Fit cable joint boxes
-
Mix and pour the cable jointing resin
-
Demonstrate they can complete a single-phase cut out including jointing instructions and procedures
-
Demonstrate they can complete a single-phase sub-service pot end
-
Demonstrate they can complete a single-phase sub-service straight joint including jointing instructions and procedures
-
Demonstrate they can complete a three-phase sub-service straight joint including jointing instructions and procedures
-
Demonstrate they can make cable ends safe
-
Demonstrate they can complete a single-phase service joint on to three-phase Wavecon mains
-
Demonstrate they can complete a three-phase service joint on to three-phase Wavecon mains
-
Demonstrate they can complete service pot ends, single and three-phase

LV1 – LV Live Jointing Course, Single and Three Phase Services
ASM – Avonside Safety Management

Cable Jointing Training – Industry Leading Courses
Avonside Safety Management are industry leaders in the delivery of electrical safety training.
ASM have industry-leading expertise in cable jointing training. They can train a wide range of joint assembly on all commonly used HV and LV cables, catering from inexperienced operatives through to experienced jointers.
Their trainers have a wealth of industry experience and can offer tailored courses to suit your needs including tooling, cable types, joint types and procedures.
ASM have a dedicated training facility located in Redditch offering a market leading learning environment in both practical and classroom environments.
EUSR
Andrea Tompkins Training Manager at Avonside Safety Management
“Our courses have been endorsed by Energy & Utility Skills meeting the quality standards required by the utility industry.
The Energy & Utility Skills Register is a register of individuals’ training and skills.
Individuals that undertake training and/or assessment on a scheme or programme have this training recorded against their EUSR registration.
Individuals are issued with a unique EUSR ID number as well as a photo ID card upon successful completion – this card also displays the training or skills recorded on EUSR against the individual which can be verified online. EUSR registration is valid for a fixed period of time, usually three years and individuals are required to renew their registrations by undertaking the relevant training once their registration has expired.”

LV, MV & HV Jointing, Earthing, Substation & Electrical Eqpt
Thorne & Derrick International are specialist distributors of LV, MV & HV Cable Installation, Jointing, Duct Sealing, Substation & Electrical Equipment – servicing UK and global businesses involved in cable installations, cable jointing, substation, overhead line and electrical construction at LV, 11kV, 33kV and EHV.
THORNE & DERRICK Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV
Nuclear Site Pleads Guilty Over High Voltage Injury
February 26th, 2021
Sellafield substation – Photograph shows burn marks at the rear of the substation where the electrical incident took place – Image credit ONR
Sellafield Substation
This Article was originally published in IOSH Magazine, December 2020.
Electrical Incident
The operator of the world’s largest nuclear site has been fined £320,000 after an electrician’s eyelashes were burned off and his shirt caught fire while working on high voltage equipment.
Sellafield was prosecuted following what an inspector described as an ‘entirely avoidable’ incident in which a worker suffered 15-20% burns at the site near Seascale in West Cumbria.
On 24 April 2020 Reece Hudson was assisting in a job to permanently disconnect a three phase 11kV cable known as HTF 148 at a high voltage electricity substation.
Two authorised persons cut the cable and instructed Reece to cap and disconnect it on his own. He removed the cover from the front of the cable box, which had a green label on it indicating that it was safe to work on.
However, he had a limited experience of high voltage cable boxes.
He expected to see three ‘elbow joint’ terminations, but when he looked into the box he saw three cable cores with ‘straight boot’ style covers. This led him to believe that the cable went up into the section above.
He went to the rear of the unit to try to find the terminations. There were no warning labels on the rear to indicate the presence of live conductors behind the covers and he therefore removed one of them.
He tried to remove the back panel but came into contact with the live current and was thrown back against the substation wall. The photograph above shows the burn marks.
His eyelashes were burned off and his shirt caught fire. He managed to beat out the flames and called the control room for help. He was taken to West Cumberland Hospital and then onto the burns unit at Newcastle upon Tyne.
‘IN A NUTSHELL, THE DEFENDANT REQUIRED SOME OF ITS EMPLOYEES TO UNDERTAKE WORK ON HIGH VOLTAGE EQUIPMENT WITHOUT HAVING RECEIVED ADEQUATE TRAINING TO DO SO’
Reece’s burns covered his face, chest, arms and hip and he underwent two skin grafts.
He spent almost three weeks in hospital and has been left with permanent scarring on his arms and wrist. He also suffers with psychological and emotional problems, the ONR’s solicitor advocate, Craig Morris, told Carlisle Magistrates’ Court last week.
Sellafield Ltd was charged under Section 2 of the Health and Safety at Work Act for failing to ensure the health and safety of its employees, in relation to the risks arising while undertaking high voltage electrical work.
The risks involved in undertaking electrical work include the risk of death and it is vital that safe systems of work are in place to undertake that work and that it is undertaken by appropriately qualified and trained individuals, Craig said.
‘As a shift worker, Reece spent the majority of his time on site working with low voltage equipment and responding to breakdowns,’ he told the court.
‘His limited work on high voltage equipment was made up primarily of non intrusive routine visual maintenance checks on ring main units and transformers, rather than the type of intrusive work that he was being asked to undertake on the 24 April.
‘In a nutshell, the defendant required some of its employees to undertake work on high voltage equipment without having received adequate training to do so and providing them with little in the way of written material or adequate supervision and failing to mark live parts on older equipment with the appropriate warning signs.’
When referring to the Sentencing Guideline, District Judge John Temperley deemed the incident the upper end of Medium Culpability with a level of harm as the top tier, risk of death. As Sellafield is a very large organisation, a fine of £480,000 was imposed, reduced by a third for an early guilty plea.
The Sellafield site is one of Europe’s largest industrial complexes, managing more radioactive waste in one place than any other similar facility in the world and employing thousands of people.
In an IOSH magazine article, Sellafield’s EHS&Q director discussed the significant challenges the site faces daily.
Last year, Sellafield Ltd was prosecuted over employee contamination after a worker was left susceptible to internal radiation exposure.
IOSH magazine is published on behalf of the Institution of Occupational Safety and Health (IOSH) by Redactive Publishing Limited

Jointers blog
Subscribe now to our POWER NEWSLETTER– a monthly email circulation packed with news, projects, videos, technical tips, training information, promotions, webinars, career opportunities and white papers.
Includes access to our popular JOINTERS BLOG with contributions from utility professionals, linesmen and cable jointers working on MV HV EHV cables and overhead lines typically at 11kV, 33kV, 66kV and up to 132kV.
