ISO 10333-3:2000 pdf download

ISO 10333-3:2000 pdf download.Personal fall-arrest systems 一Part 3:
Self-retracting lifelines.
3.2.3
subsystem
constituent part of a PFAS which may consist of one or more components, and is used to connect the user from the fall-arrest attachment element of the full-body harness to the anchor device and performs the two essential functions of a PFAS as follows:
a) connecting;
b) arresting and energy absorbing
4 Requirements
4.1 General
To ensure that components assembled into a PFAS perform correctly it is recommended that they be tested in accordance with ISO 1 03336.Eh1
4.2 Lifeline
4.2.1 Fibre ropes and webbing
4.2.1.1 Fibre ropes, webbing and sewing threads for lifelines shall be made from virgin high-tenacity filament or multi-filament synthetic fibre or fibres suitable for the intended use.
4.2.1.2 The number of strands of a laid lifeline shall be at least three. Three-strand polyamide lifelines shall comply with ISO 1140 and three-strand polyester lifelines shall comply with ISO 1141.
4.2.1.3 Lifelines constructed from braided rope shall comply with EN 892 (single rope) or EN 1891, type A. Any equivalent material is acceptable.
4.2.1.4 Where lifelines are specified for, or when it is known that lifelines will be used in work carried out near welding or oxy-cutting stations, or heat sources, they shall be protected by suitable heat-protective means.
4.2.1.5 The minimum breaking force of fibre rope or webbing material used in the construction of lifelines shall be 22 kN.
4.2.2 Wire ropes
The minimum diameter of wire rope material used in the construction of lifelines shall be 5 mm with a minimum
breaking force of 15 kN.
4.2.3 Terminations
4.2.3.1 The end of the lifeline which is intended for connection to the user’s full-body harness shall be terminated with a swivel connector which complies with ISO 10333-5.
4.2.3.2 Eye splices in laid fibre rope shall consist of four tucks using all the yarns in the strands and two tapered tucks. The length of the splicing tails emerging after the last tuck shall be at least one rope diameter. Tails shall be whipped to the rope and protected with a rubber or plastic sleeve, or otherwise integrally finished to prevent the termination or splice from unravelling. Sealing compounds used shall be compatible with the rope material. Eyes shall be formed around a plastic or metal thimble of size and strength in accordance with rope manufacturer’s recommendations.
4.2.3.3 Stitched eye terminations on webbing lifelines shall be sewn using lock stitching. Thread shall be compatible with the webbing material and shall be a contrasting colour to facilitate inspection. Reinforcement or another method shall be used to protect terminations from concentrated wear at all webbing-to-metal fitting interfaces. Webbing ends shall be seared or otherwise prevented from unravelling.
4.2.3.4 Eye terminations of wire rope lifelines shall be manufactured either with
a) a spliced eye with one compression swage with thimble, or
b) a return eye with a minimum of two compression swages with thimble.
4.2.3.5 Selection of swage fitting, size, material type, compression die size/pressure, position of swage(s) on rope, and thimble size, shall be carried out in accordance with the rope manufacturer’s recommendations. In particular, aluminium swages are recommended for steel wire ropes and copper swages for stainless-steel wire ropes.
4.2.3.6 Wire rope ends shall be brazed, whipped or have an equivalent finish to prevent unravelling. Brazing should be carried out prior to forming the eye.
4.2.3.7 Knots shall not be used to form lifeline terminations.
4.2.3.8 The internal termination of the lifeline to the lifeline drum or other shall be such that:
a) the lifeline cannot be separated from the drum in normal use, especially when the lifeline is at the maximum working length;
b) the connection between the lifeline drum or other can withstand the tensile strength requirements specified in
4.3.8.
4.2.4 Energy absorbers integral to the lifeline
Lifelines may be so constructed as to include an integral energy absorber as the sole means of kinetic (fall) energy dissipation in the SRL, which remains external to the SRL when the lifeline is fully retracted. Such materials and mechanisms where utilized in the SRL design shall be protected from external contaminants, sharp objects and adverse climate by the fitting of a protective cover.
4.3 Design
4.3.1 General
4.3.1.1 The design of working parts, their location and the protection afforded to them shall be such as to prevent the possibility of performance being impaired by casual interference.
4.3.1.2 The SRL design shall be smoothly finished and free from defects due to faulty material and manufacture; there shall be no sharp or rough edges that may cut, abrade or otherwise damage the lifeline material or cause injury to the user.
4.3.1.3 The SRL shall incorporate an automatic locking feature which is capable of preventing further accelerated lifeline extraction during a fall by engaging some means of braking device. The design shall be such so that it shall not be possible to override the automatic locking feature when in use.
4.3.1.4 The SRL shall have a suitable means of attachment on the upper portion of the SRL housing for connection to the intended anchor device.
4.3.1.5 The SRL shall have a suitable means of retraction incorporated to ensure the full unassisted and automatic retraction of the lifeline with the mass of the lifeline being solely supported by the SRL housing.
4.3.1.6 The surfaces in contact with the lifeline, at the position where the lifeline exits the SRL housing, shall be radiused and free from sharp edges likely to cause undue lifeline wear.