14.9.1 Pre-use inspection

In addition to the thorough examination necessary under statutory provisions, all chain slings should be visually inspected by a suitably qualified and experienced person prior to use. For chain slings in regular use it is good practice to make the inspection at the start of each shift or working day. For chain slings used infrequently it should be done before use on each day of use.

It is recommended that a formal system of pre-use inspection is implemented, and a written record kept identifying the date inspected, confirmation that it passed inspection and the name and signature of the person making the inspection. In the event that it does not pass inspection, there should be procedure to quarantine the sling to prevent further use of the equipment until the problem has been resolved.

The purpose of the pre-use inspection is to check functionality of the chain sling and make a visual check for any obvious defects. This inspection must be carried out with the sling in a reasonably clean condition and in adequate lighting. The following are examples of the common defects which may become apparent in use or during the regular inspection of chain slings and if any are present, the sling should be withdrawn from service and referred to a Competent Person:

  1. Illegible markings; i.e. the sling identification mark and the SWL including the angle or range of angles of use.

  2. Distortion of the top terminal fittings.

  3. Stretched chain; if the outside length of the chain links is noticeably increased or if there is any lack of free articulation between the links.

  4. Bent or twisted links; slings used in choke hitch should be inspected more frequently paying particular attention to the point of choke.

  5. Wear; most common at the interlink seats.

  6. ‘Opening out’ of hooks (i.e. any noticeable increase in the throat opening) or any other form of distortion in the lower terminal fittings.

  7. Ineffective safety catches where fitted.

  8. Cuts, nicks, gouges, cracks, excessive corrosion, heat discolouration, or any other defects in chain or fittings.

  9. Incorrect assembly of the mechanical joining devices (refer to manufacturer’s instructions).