
Heavy Duty Safety Nets & Safety Net Rolls
Installation Examples & Best Practice Guide
Safety is a top priority in any industrial setting, and one crucial aspect of ensuring a secure working environment is the installation of heavy-duty Dropped Objects Prevention Safety Nets. These robust nets provide an effective secondary solution to catch objects in case the primary fixings fail.
The primary purpose of safety netting is to prevent injuries and protect workers and equipment from falling objects. Safety nets act as a vital secondary measure, providing a reliable barrier to catch objects that may accidentally fall or be dislodged from primary fixings. By installing heavy-duty safety nets, industries can significantly reduce the risk of accidents, minimise property damage, and enhance overall workplace safety.
Thorne & Derrick stock and distribute an extensive range of Confined Space Entry Products and Equipment to mitigate potentially life-threatening dangers such as flammable gases, dangerous chemicals and other hazards – this ensures people are safe at all times and also provides the correct rescue equipment to meet the legislative requirements.
In this blog, we will explore various examples of safety netting installations, along with the assembly instructions for safety nets, highlighting the importance and purpose of these essential safety measures.
Safety netting comes in different forms, tailored to meet the specific needs of various industries. One prominent example is the stainless steel net, commonly used as a dropped objects prevention safety net. These nets are designed to catch falling objects, preventing potential hazards and protecting workers and equipment below. Stainless steel nets offer exceptional strength, durability, and resistance to corrosion, making them ideal for industrial environments
➡ Thorne & Derrick supply the complete range of Safety Tools & Equipment from Cable Safe to enable safe working across all industries. This includes cable safety hooks, self-closing safety gates, confined space entry protection, guard nets and cable stands.

Examples of Heavy Duty Safety Nets
- Safety Net Rolls: These versatile nets come in rolls, making them easy to transport and install. They are ideal for covering large areas quickly and effectively, offering reliable fall protection and containment.
- Safety Net Fit-to-Size: custom-fit stainless steel nets are available in situations where precision is paramount. These nets are tailored to specific measurements, ensuring a perfect fit for any industrial setting. They provide maximum safety without compromising on aesthetics or functionality.
Safety Net Roll
The Safety Net Roll is cut in smaller sections with simple hand tools and wrapped around equipment at height. A steel lanyard is used to attach the net to a structure as a secondary retention method to prevent dropped objects. The Safety Net Rolls are suitable for onshore and offshore conditions and are chemical treated.
To prevent objects from falling from height the safety nets are wrapped around the objects. The size of the object determines the size of the Safety Net Roll required. A strong lanyard is supplied to weave through the netting and wrap and lock the ends of the safety net to the solid structure. This secondary retention method is commonly applied to protect the lives of the workers and pedestrians.

Safety Net Rolls Around Light Fittings
How do you install a safety net?
Proper installation is crucial to ensuring the effectiveness of safety nets. Here are some key steps to follow when installing industrial safety nets:
- Planning and Assessment: Begin by conducting a thorough assessment of the area where the safety net will be installed. Identify potential hazards, determine the required dimensions and strength of the net, and assess the attachment points.
- Preparation: Prepare the area by removing any debris or obstacles that may hinder the installation process. Ensure the attachment points are secure and capable of withstanding the load.
- Net Assembly: Follow the manufacturer’s instructions for assembling the safety net.
- Attachment Points: Depending on the specific installation requirements, safety nets can be attached to existing structures such as beams, walls, or specially designed frames. Ensure the attachment points are robust and capable of supporting the net’s load.
- Tensioning: Proper tensioning is essential to maintain the integrity of the safety net. Carefully adjust the tension to ensure a taut and secure installation. Be mindful of the net’s sag, as excessive sag may reduce its effectiveness.
- Testing and Inspection: Once the safety net is installed, conduct thorough testing to ensure its stability and load-bearing capacity. Regularly inspect the net for any signs of wear, damage, or degradation, and replace or repair as necessary.

Conclusion
Industrial safety nets, particularly stainless steel nets used as dropped objects prevention measures, play a critical role in maintaining a safe work environment. By understanding examples of safety netting, following proper installation procedures, and recognising the purpose of safety netting, industries can effectively mitigate potential hazards and ensure the well-being of their workforce. Implementing these heavy-duty safety measures demonstrates a commitment to safety and provides peace of mind to employees and employers alike.
Remember, when it comes to safety, investing in reliable safety netting is a worthwhile endeavour that pays dividends in accident prevention and overall workplace safety.
FAQ – Dropped Object safety Nets
What Are Safety Nets?
Safety nets for fall protection are generally used at high-rise building construction sites in order to prevent objects from falling on the worksite. These nets are different from oil nets or other safety net systems in that they are a form of secondary protection in case the primary safety fails. We have two options available. One option is a safety net roll, which can be cut and used according to what size is needed. Another option we offer is custom sized nets, which is implemented fast as it requires no modification and is made for the object itself.Â
What Is Secondary Retention?
Safety Nets Fit-to-size are used for secondary retention. It secures, encloses and tethers overhead fixtures to prevent dropped objects to the work floor when its primary attachment (or installation bracket) fails.
Why Dropped Objects Prevention?
The accidental dropping of tools and equipment poses a safety threat to workers operating at elevated heights. It is therefore important to take precautionary measures to reduce the frequency of such accidents. Tools, equipment and mounted objects in an elevated location have the potential to fall due to movement.
These nets are designed to protect employees from severe injuries in a wide range of working environments. The dropped object prevention safety net will catch the equipment at height when brackets corrode or connections to structure fails (e.g. impact by crane, fatigue, etc). The nets are designed for onshore and offshore installations.
Best practices & recommendations
Portable Equipment
All portable equipment used where there is a risk of the equipment falling to an underlying level must be secured against being dropped
- Carrying pouches must always be used for radios and any other portable equipment without certified securing points
- Locks on pouches must have a double securing mechanism to prevent unintentional opening
- Belt clips that allow equipment to become detached when turned 180º should not be used
- Belts with snap fasteners are not suitable for securing equipment at height
- Battery compartments and covers on portable equipment must be secured to prevent internal components from falling.
Remember even small items falling from significant heights can cause injury and distractions. Ensure all personal equipment (tally books, pens, calipers, cameras, water bottles etc.) is secure in a fastened pocket or carry pouch. If the item is not required for the task, do not carry it at height – leave it at ground level.
Securing Tools >5kg / 11lbs
- All use of heavy tools and hand-held machinery where equipment may fall to an underlying level must be risk assessed
- All heavy tools and hand-held machinery used at height must be secured against being dropped, both when in use and while being transported
- Securing points for tools and machinery must be in place above the work site, attached to the surrounding structure, not to scaffolding
- Tools heavier than 2kg should not be secured to the body, secure them to the adjacent worksite structure
- One piece sledge hammers (forged construction with secured head) should be used at height
- The attachment points / devices on tools shall be documented and all securing wires inspected in accordance with the manufacturers recommendations
- The securing wire must be as short as possible to reduce shock loading effect
- Energy absorbing lanyards and tethers can stretch beyond the safe calculations or drop distance, therefore fixed securing wires should be used on heavy tools at height, according to the work environment
- Only certified lifting equipment shall be used as securing devices (where appropriate)
- Tools used at height should be checked out / in (see Page 54) to ensure that nothing is left behind.
Securing of Personnel
- The choice of equipment to be used must be made after evaluating the work place environment
- Established control procedures must be followed before, during and after use
- Anyone using personal protective equipment against falls from height must have documented training (including rescue method training)
- Nobody shall work alone or unattended when using fall arrest equipment
- Everyone involved in the work scope must have sufficient training and awareness of the equipment and safety procedures
- A ‘Buddy’ check of all fall arrest, rigging and other equipment must be carried out
- The necessary rescue equipment and trained personnel must always be available at the workplace
- Fall arrest equipment must have CE approval, incorporate an anti-trauma safety device and comply with an accepted standard
- The equipment shall be checked EVERY TIME before use and must be checked at least every 6 months by a competent person
- The date for next inspection must be clearly shown on the equipment
- The anchor point for suspension must be rated to 5000 lbs (22kN) – OSHA.

CABLE SAFETY EQUIPMENT
CableSafe® Safety solutions are critical cable essentials and are well proven construction safety products. The CableSafe® range of cable hooks can be used during maintenance, turnaround, outages, shutdowns, construction work to suspend cables and hoses and other work gear and equipment from the working space.
PUSH PULL TOOLING
Thorne & Derrick stock and distribute a range of Safety Tools including Push Pull Tools from Hand Safety Tool Company designed to minimise hand injuries by keeping hands out of the line of fire.


OWNE Conference & Exhibition
The team at Thorne & Derrick are looking forward to exhibiting at Offshore Wind North East in November! Hosted by NOF, this industry leading event explores opportunities in the offshore wind sector; bringing together an impressive line-up of speakers and supply chain opportunities.
Thorne & Derrick International are Specialist Suppliers to the UK and international Offshore Wind Industry of products to provide safe and reliable LV HV Electrical Cable Termination, Jointing, Installation & Power Systems up to 66kV.
📍Location: Beacon of Light Sunderland
🕑Date: 8th & 9th November
We will be showcasing and demonstrating a range of our innovative products and solutions at the Event including LV-HV Cable Joints, Terminations, Connectors, Tools & Accessories, Arc Flash Safety and Voltage Detection. Thorne & Derrick will also be delivering a LIVE Demo of the Picoup 400 Spiking Tool from PENTA P&B (formerly P&B Weir).
See the full range of products below:
Come and visit us at Stand D02 and let’s explore how we can work together to make your offshore wind projects a success✨
About The Event
Offshore Wind North East (OWNE) is a national event in a pioneering offshore wind region of the UK. Since 2000 the North East of England has been involved in offshore wind, using its experience and expertise in other industries to diversify and create a new and vibrant offshore wind supply chain. It now leads the way in the green energy revolution, playing a key role in energy security and the UK journey to net zero 2050. The industry here has now contributed significantly to the creation of new jobs, economic growth and the regeneration of coastal communities.
With first-class infrastructure, including six highly-active ports, its prime location on the east coast of England with world class offshore wind farms on its doorstep, including Dogger Bank Wind Farms and the Sofia Offshore Wind Farm, the region maintains its enviable track-record with its supply chain cluster contributing a lion’s share to the UK and the Global offshore wind farms.

“RWE’s Sofia has been a strategic partner for Offshore Wind North East every year since 2018, which means this year’s event will be the sixth time we have had a major presence there. As one of the major offshore wind developers projects in the region, RWE and the Sofia project team sees it as an excellent opportunity to meet colleagues and suppliers and find out what is happening in the sector locally. Companies from the North East have been integral to the success of the UK’s offshore wind evolution and having access to the wealth and depth of experience in one place makes it a really worthwhile two days in November. This applies not just for Sofia but for the wider RWE portfolio including those upcoming projects such as Dogger Bank South and its numerous operational projects in the North Sea and around the UK.”
Matthew Swanwick
Project Director, Sofia Offshore Wind Farm
NOF

NOF is a UK wide, business development membership organisation, helping to make valuable connections between businesses in the global energy sector. They work on behalf of members and their network of partners to put companies of all sizes in touch with the best and most innovative supply chain businesses in the UK.
The organisation offers an annual membership with four core services: Business Development, Industry Introductions, Events and Supply Chain Engagement. Your NOF membership can be enhanced with access to the Offshore Wind Projects Database.
Thorne & Derrick
Specialist Distributors of High Voltage Jointing & Electrical Safety Equipment
Thorne & Derrick International are Specialist Suppliers of products to provide safe and reliable LV HV Cable Termination, Jointing, Installation & Power Systems up to 66kV.
Key Product Categories: Connectors, Joints & Terminations MV HV | Cable Preparation & Jointing Tools | Duct Seals | Cable Transits | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Clothing & Protection | Cable Pulling | Earthing & Lightning Protection | Feeder Pillars
Thorne & Derrick distribute the most extensive range of MV HV Medium & High Voltage Cable Joints, Terminations & Connectors from manufacturers including 3M, Prysmian, Nexans Euromold, Elastimold, Pfisterer CONNEX & SEANEX.


3M Scotchcast™ Resins
3M 92 NBA GS Scotchcast resin cable joint kits are low-voltage cable jointing kits using the innovative epoxy, CMR-free 3M™ Scotchcast™ 4 GS Resin.
The Scotchcast cable joints incorporate electrical insulation and mechanical protection and are compatible with both compression (crimp) or mechanical shearbolt connectors for conductor jointing of copper or aluminium cores.
92 NBA GS Scotchcast resin cable joint kits includes 8 sizes with options of an integrated connector and different joint types. It features a unique design which builds upon the experience of 3M in low voltage cable accessories.
Due to EU regulation 2020/1149 amending REACH restrictions, the EU has introduced mandatory training for workers handling diisocyanates, effective 24 August 2023.

3M™ Scotchcast™ Electrical Insulating Resin 4 GS in bags
How does this affect the use of 3M™ Scotchcast™ Resins?
The 3M™ Scotchcast™ 4GS Epoxy Resin was developed with sustainability, safety and ease-of use in mind.
The product is free of carcinogenic, mutagenic and reprotoxic (CMR) substances, without compromising the performance. The isocyanate-free formulation means that it is not concerned by the EU regulation 2020/1149, and as a result, avoids the need for the mandatory training.
The popular 3M™ Scotchcast™ 40 Polyurethane Resin and 3M™ Scotchcast 40 Resin Kit products are impacted by the EU regulation 2020/1149, as they contain Diisocyanate component typical for Polyurethane resins.
But reassuringly, all of the 3M™ Scotchcast™ Resin Kits which come with an innovative closed mix & pouring (CMP) system that connects the resin bag with the housing body (which is a convenient one-piece mould) ensure a mess-free, no-contact, fast and safer installation. This minimises the risk of human exposure to the resin.
Since 1985, Thorne & Derrick have been Approved Distributors for 3M Electrical Products (LV HV) including Cold Shrink and Scotchcast products – whilst the competitive supply of product from stock on short lead times is essential to the distributor it is equally vital that 3M product reputation is preserved through the correct installation of products in accordance with 3M recommendations.

Thorne & Derrick | Stockists & Leading UK Distributor for CSD Sealing Systems
PR | Uploaded by Natalie Lundie | Supply Chain: Marketing Lead at Thorne & Derrick
Thorne & Derrick, a UK Specialist Distributor for CSD Sealing Systems, have recently supplied a technical solution to Rathlin Ferry for their Kintra II passenger vessel.
Together with CSD we provided a cable duct sealing system suitable for marine and offshore environments – protecting against flood water and gas ingress where cables are often routed through cable transits that are exposed to harsh weather conditions and potential flooding.
Sealing Application
The client contacted Thorne & Derrick requiring a solution that provided a safe and secure way to seal and protect cable and pipe penetrations through the bulkheads. The bulkheads that they were looking to pass cables through were rated at A60 and any system installed also needed to be A60 rated to maintain the integrity. The system also needed to provide fireproof and watertight seals that complied with International Maritime Organisation (IMO) and SOLAS regulations.
Thorne & Derrick contacted CSD, The Global Leader in Fire, Water & Gas Penetration Sealing Systems who initiated a consultation with the client to identify the optimum solution. After an extensive call with CSD’s Operations Director, Anthony Jordan discussing the application further it was decided that the original enquiry for Rise Duct Seals was more suited to the onshore market and a suitable alternative was offered.

CSD NOFIRNO Â Seals – Multi Cable & Pipe Transit Sealing
Sealing Solution
It was determined that the NOFIRNO Multi-Cable Transit System which is approved for harshest fire ratings for pipe penetrations (A, H and Jet Fire class) was the best solution.
This is because this type of system holds the required certification and provided the A60 rating required. Designed specifically to maintain the safety of the vessel by providing fire protection and ensuring the bulkheads remain gas and watertight when cables need to pass through them.

The NOFIRNO system comprises of rubber and filler sleeves and sealant, the system is used to treat transit openings for cables and pipes in walls, floors, bulkheads or decks, so that it is fire-resistant and sealed against gas, smoke and water.
It consists of only a few components: NOFIRNO sealant; a silicone based fire resistant, water repellent sealant, a correctly fitting NOFIRNO cable sleeve  and NOFIRNO multi-filler sleeves, supplied in bonded strips to make the system easy to install.
The system consists of a correctly fitting NOFIRNO rubber sleeve placed around each cable with the free space then packed with rubber multi filler sleeves. The rubber sleeves are 40mm shorter than the overall transit length to allow the seal to be completed with a 20mm layer of sealant at each end of the transit.
Anthony Jordan Operations Director at CSD Sealing Systems commented, “We were pleased to support Thorne & Derrick, our Specialist Distributor, with the technical aspects of this enquiry helping to make ensure the customer was provided with a sealing solution that met their specification requirements and also provided a certified system to help improve safety and protect lives when the vessel is in service.”
CSD NOFIRNO Seals – Multi Cable & Pipe Transit Sealing – Installation Layout

Why did the existing frame need extending?
During the phone consultation with Anthony it was discussed that to meet the requirements of an A class fire rating the existing frame needed to be extended  from the existing120mm in length. The system is tested at a minimum length of 180mm for A60 and 200mm for A0.
Anthony confirmed that CSD generally recommend using a 200mm to ensure all ratings are covered. The length of the penetration helps to prevent heat transfer between compartments and also ensures you have sufficient rubber materials for the system to perform when there is a fire.
It is imperative to ensure that not only there is no fire breakthrough where these cables pass through the bulkhead but also that the heat on the non-fire side does not increase to a level where there could be ignition on the non-fire side.
NOFIRNO Multi-Cable Transit System Advantages
The NOFIRNO system consists of high-quality, non-toxic silicone-based rubber seals and high-strength steel frames. The rubber seals are designed to expand and fill the space around the cables, providing a tight seal that prevents fire and smoke from spreading throughout the ship. The frames are designed to securely hold the seals in place and provide a strong and durable barrier against fire and water.
Using the NOFIRNO multi-cable transit system on a passenger vessel can provide many benefits, including:
- Enhanced safety and protection: The NOFIRNO system provides a high level of fire resistance and watertightness, ensuring that passengers and crew are protected from potential hazards
- Easy installation: The system is easy to install and requires minimal tools and equipment. This reduces installation time and costs, making it an efficient and economical option for shipbuilders and owners
- Flexibility: The system can accommodate a wide range of cable and pipe sizes, and can be customized to fit the specific needs of each vessel
- Durability: The NOFIRNO system is made from high-quality materials that are designed to withstand the harsh marine environment and provide long-lasting performance
With its proven track record of success, this CSD system is an excellent choice for anyone looking to protect their cables from the damaging effects of flood water and gas ingress.
KINTRA II
Kintra II was commissioned by Kintra Boat Tours in 2020.
It is an 82 passenger catamaran for trips and tours of the North Coast and Rathlin Islands. As the design of Kintra proved so popular with guests, Kintra Boat Tours decided to keep the same design with a few added extras.

Rathlin Island, Northern Island

Staff & Support Training Day | Anthony Jordan (Operations Director) has supported T&D for over 20 years. Anthony recently invited the team to visit the CSD offices in Cramlington providing product refresher and hands on training for the team.


LV HV | Jointing, Earthing, Substation & Electrical Eqpt up to 66kV | Specialist Distributors

MV HV High Voltage Cable Joints | Cable Terminations | Cable Connectors | Distributed from Stock | UK & Export Sales
Thorne & Derrick distribute the most extensive range of MV HV Medium & High Voltage Cable Joints, Terminations & Connectors from manufacturers including 3M, Prysmian, Nexans Euromold, Elastimold, Pfisterer CONNEX & SEANEX.
Heat shrink, cold shrink, push-on and slip-over cable accessories enable the jointing, terminating and connection of 11kV-33kV and 66kV-132kV cables to oil, air or gas insulated switchgear, transformers, motors and overhead lines distributing electricity at MV HV.
Thorne & Derrick hold large stocks of 11kV 33kV 66kV Joints, Terminations & Connectors suitable for XLPE, PILC and EPR cables, in both heat shrink and Cold Shrink technologies, to service the medium/high voltage power cable accessory requirements of UK and international customers – this includes underground and subsea cables.
EUROMOLD, the Brand
EUROMOLD, the EPDM Connector | 1,000 Units SPECIFIED & SOLD | Last week, Thorne & Derrick, the UK’s leading and a Preferred Distributor of Euromold brand Separable Connectors manufactured by Nexans Power Accessories delivered their 1,000th Connector this year – all these sales had a single common factor.
These 1,000+ Connectors on each and every occasion were supplied to either replace FAILED or DISTRESSED ( FAILING) competitor brand product – note these 2023 sales exclude new project installations, they are inclusively replacement of in-service energised or outaged (usually premature PD evidenced) Connectors.
Euromold Connectors are manufactured from EPDM material.
EPDM Connectors demonstrate the highest quality electrical insulation, superior tracking resistance and a proven field performance with an unrivalled service life cycle expectation – 40 years of field service when installed correctly and functioning in normal environmental conditions.
The difference is material.
That difference is EPDM.
You can trust EUROMOLD.
This continues a concerted awareness campaign across all sectors from wind turbine to trackside rail – take a moment please to read my Blog : Nexans Euromold | Where the Difference is Material
More Euromold

MV HV Medium & High Voltage Connection & Termination Products up to 66kV