Safety Nets

Dropped Objects Prevention Safety Nets

Secondary retention nets preventing corrosion dropped object accidents

Dropped objects are a major source of incidents in heavy industries. In the drilling industry offshore dropped objects are listed in the top ten of most frequent incidents. By securing overhead fixtures using secondary locking devices and additional securing techniques incidents are prevented and risk for personnel is reduced significantly.
Dropped objects are prevented using secondary retention nets. These specifically designed safety nets secure, enclose and tether overhead fixtures with the purpose to prevent a fixed item from falling when its primary attachment fails. The nets are designed for onshore and offshore installations.
Cablesafe - Dropped Objects Prevention Safety Nets

Dropped Objects Prevention Safety Nets

The nets can for example enclose and tether overhead fixtures, such as; lights, beacons, speakers, self-retracting lifelines, CCT’s, anodes, pipe clamps and other items that are located above personnel and critical equipment.

The nets fully encloses the item being secured, while the integrated securing cable attaches around a structural attachment point, preventing both the item and fixture components from dropping or falling.

Drop save nets are made out of high grade stainless steel. A carabiner hook will make it easy to attach the unit to a secondary retention point.

The Nets are made out of stainless steel Aisi316: It is the preferred steel for use in marine environments because of its greater resistance to pitting corrosion than other grades of steel.

 

Where to use dropped object prevention safety nets

  • Fixtures located above personnel and critical equipment
  • Fixtures on mobile equipment (e.g. crane booms, derricks, drill rigs, draglines and shovels)
  • Fixtures in potential impact zones of mobile equipment
  • Fixtures and mountings exposed to vibration wear and fatigue
  • Fixtures prone to oxidation and galvanic corrosion
  • Fixtures located in areas difficult to access for maintenance or inspection

Prevents potentially serious incident during crane operations: photo DropSafe

Dropped object prevention safety net features

  1. Designed and tested to over five times (5x) the product Safe Working Load (SWL)
  2. Withstands extreme high temperatures up to 500°C (932°F)
  3. Withstands extreme low temperatures down to -40°C (-40°F)
  4. Able to retain most fixture mounting brackets (if SWL not exceeded)
  5. SUS/AISI 316 stainless steel wire and components
  6. Available for a wide range of fixtures (custom designs also available)

Fixture types

  • Flood lights
  • Strip lights
  • Navigation lights
  • Speakers
  • CCTV Cameras
  • Self-Retracting Life Line
  • Pipe clamps
  • Anodes
  • Junction boxes
  • Heat and smoke detectors

Dropped object prevention floodlamp with cable and carabiner

Many floodlights installed at height are not adequately secured against falling or  colliding with mobile equipment.

Where potential exists to incorporate additional safety securing wires or nets and any associated securing points such as eye bolts, ensure that these modifications do not compromise the function, integrity and rating of the electronic fitting.

Best practice recommendation wire clamps dropped object prevention

  1. Wire clamps must be of the correct number and sized to the dimensions of the wire
  2. It is a requirement that wire clamps are assembled, inspected and maintained in accordance with the manufacturer’s user manual / maintenance instructions
  3. Bull-dog style clamps should not be used.

Best practices & recommendations to work at height

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.

References

Cablesafe® are developed for the heavy industries with safety as its highest priority. Cablesafe Safety innovations have proven its usefulness for industries such as; refineries, chemical plants, shipbuilding, electrical and nuclear installation. Employees and contractors are convinced users of Cablesafe Safety Products. Some multinationals prescribe the use of Cablesafe in own company procedures to adhere to the highest safety practices.

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