Securing electrical equipment and instruments

Electrical equipment should be properly secured to prevent them from dropping. Next to the dangers of dropped objects electrical equipment form an extra hazard. Lose electrical lines can electrocute workers or damage orther critical equipment. This part covers best practice recommendations to prevent this from happening.

Floodlights

Best practice recommendations:

  • Floodlights must be positioned to prevent being hit by equipment/loads
  •  If there is a risk that the floodlights may be hit by mobile equipment/loads, they must either be protected with reinforced cages / rejector
  • Floodlights must be equipped with secondary retention. The attachment points for wire or chains should be integrated, for example with eye bolts threaded into the floodlight housing
  • Calculations relating to the relevant fall energies must be available for attachment points and securing devices
  • Fastening devices for securing equipment to brackets or structures should be fitted with secondary retention
  • Hatches/screens for the replacement of light bulbs must be hinged or secured with wire to the floodlight housing/frame
  • For new installations, or when installing securing devices on existing equipment, an up-to-date user manual/maintenance instructions should be provided

Lighting fixtures

Best practice recommendations:

  •  Lighting fixtures must be positioned to prevent them being hit by mobile equipment/loads
  • Lighting fixtures and brackets should be fitted with secondary retention
  • Attachment points for safety wires should be integrated at both ends of the fixture
  • Battery packs must be fitted with secondary retention
  • Above walkways and other trafficked areas, fixtures to which power is supplied from one side only should be secured at the opposite end with a safety wire
  • Above walkways and other trafficked areas, fixtures to which power is supplied from one side only should be secured at the opposite end with a safety wire
  • Plastic components should be avoided, since over time they are weakened by uv radiation
  • On existing, older types of fixtures, covers should be secured using stainless tie wraps or galvanised perforated steel ban
  • The component rail should be hinged and must be able to be properly secured in the closed position
  • The strength of attachment points and securing devices should be evaluated in relation to the relevant fall energies
  • For new installations, or when installing securing devices on existing equipment, an up-to-date user manual/maintenance instructions should be provided

Navigation lights / lanterns

Best practice recommendations:

  • Navigation lights and lanterns should be placed outside areas with normal activity
  •  The bolts used to attach navigation lights to brackets and structures should be equipped with secondary retention
  • Covers for electrical connections must be hinged or secured by wire
  • The strength of attachment points and securing devices must be evaluated in relation to the relevant fall energies
  • Navigation lights with sliding grooves for bolt attachment to the structure are not recommended
  • For new installations, or when installing securing devices on existing equipment, an up-to-date user manual/maintenance instructions should be provided

CCTV Cameras

Best practice recommendations: (solution with integrated securing device)

  •  CCTV cameras should be positioned where they will not be at risk of being hit by moving equipment/loads
  •  In areas where there is a risk of the camera being hit by moving equipment/loads, the camera shall be shielded by a protective cage
  • The camera casing must be fastened to the bracket and structure with adequately locked attachment bolts
  • The attachment point for securing devices should be an integrated part of the camera casing and bracket
  • For new installations, or when installing securing devices on existing equipment, an up-to-date user manual/maintenance instructions should be provided

Best practice recommendations:  (solution without integrated securing device)

  • CCTV cameras must be positioned where they will not be at risk of being hit by moving equipment/loads
  • In areas where there is a risk of the camera being hit by moving equipment/loads, it must either be protected by a reinforced cage or be secured to the structure with safety wire
  • The camera should be fitted with independent barriers on the camera casing, the motorized pan-tilt-zoom unit, the wiper motor and the lens shade
  • The camera casing and motorised pan-tilt-zoom unit should be attached to the bracket and structure with adequately locked attachment bolts
  • The attachment point for the securing devices should be integrated into the camera parts. Alternatively, special clamps can be used as attachment points
  • Calculations relating to the relevant fall energies should be available for attachment points and securing devices
  • For new installations, or when installing securing devices on existing equipment, an up-to-date user manual/maintenance instructions should be provided

Crane boom camara and floodlights

Best practice recommendations:

  • Crane boom cameras and floodlights must have two independent barriers
  • Bolts used for attaching the crane boom camera/floodlight to brackets and structures must be fitted with secondary retention
  • Attachment points for the safety wire / chain shall shall be an integrated part of the camera/floodlight casing. Alternatively, special clamps can be fitted around the camera casing
  • The safety wire must run from the camera casing through the camera bracket and then through the attachment bracket before being securely attached to the crane boom structure.
  • On floodlights, the glass frame should be hinged or otherwise secured
  • Calculations relating to the relevant fall energies should be available for attachment points and securing devices
  • For new installations, or when installing securing devices on existing equipment, an up-to-date user manual/maintenance instructions should be provided

Note: The crane boom camera and floodlight, securing devices and attachments should be regularly inspected in order to uncover any errors or omissions. The pivot bolt and attachment brackets must also be included in the inspection routines

Loudspeakers

Best practice recommendations:

  • The loudspeaker’s location must be evaluated to prevent risk of the speaker being hit by moving equipment/loads
  • Bolts used to fasten loudspeakers to brackets and the structure should be fitted with secondary retention.
  • If there is a risk of the loudspeaker being hit by moving equipment/loads, it must either be protected by reinforced braces or fitted with a safety wire
  • The strength of the attachment points and securing devices should be evaluated in relation to the relevant fall energies
  • For new installations, or when installing securing devices on existing equipment, an up-to-date user manual/maintenance instructions should be provided

Junction boxes and cabinets

Best practice recommendations:

  • Junction boxes and cabinets must be located where they do not obstruct passageways, evacuation routes or moving equipment

  • The type and design of attachment and safety devices must be in accordance with calculated loads and known potential external stress factors
  • Fastening devices for securing equipment to the bracket or structure shall be fitted with secondary retention
  • Where there is danger of the equipment being struck by moving equipment/loads, it must be protected by a reinforced cage or be fitted with a safety wire
  • Covers must be secured with wire or chain
  • Hinged hatches/doors should be secured against unintentional unhooking, and locking devices should be fitted with barrier against opening
  • As a minimum, the manufacturer’s instructions for installation and maintenance (user manual) must be followed

Cable trays and cable ladders

Best practice recommendations:

  • Only approved bolt connections shall be used for fastening and joints
  • Cable fixing clamps with screw connections are used for safe and functional securing of instrument cables/tubing
  • Cable fixing clamps with screw connections are used for safe and functional securing of instrument cables/tubing
  • The user manual/instructions for use must also provide guidelines for correct installation, in terms of both the joints and attachments
  • In addition, the user manual/instructions for use must provide guidelines for necessary maintenance/re-tightening and the inspection of both electro-steel and bolt and screw connections

Antennas, windsocks and sensors

Best practice recommendations:

  • All fasteners and U-bolt fasteners shall be secured against loosening
  • Two U-bolt fasteners or a minimum of three fasteners shall always be used
  • All bolts shall be through-bolts – do not use set screws
  • All heavy antennas should be installed with secondary retention, such as wire or chain
  • Stay wires can be used for stability in accordance with the supplier’s specifications. All fasteners must be secured
  • Avoid long whip antennas if possible, stretched antennas can be used as an alternative
  • Wind sensors with moving parts should be replaced with ultrasonic wind sensors
  • Fibreglass whip antennas should be replaced every five years
  • All equipment and securing devices shall have routines for preventive maintenance which include the supplier’s recommendations and best practices