GB 38454-2019Personal fall protection equipment - Horizontal lifeline device (English PDF)

4.2 Dynamic performance

4.2.1 Horizontal lifeline device When tested in accordance with 5.2.4, the horizontal lifeline device shall meet the following requirements:

a) The test heavy object shall not touch the ground;

b) The horizontal lifeline device shall not be loose from the fixed structure;

c) There shall be no such phenomena, such as broken webbing, broken metal parts, disconnected connectors, etc.;

d) The fall distance shall be no greater than the value provided by the product provider;

e) The maximum arrest load shall not exceed the value provided by the product provider.

4.2.2 Horizontal lifeline system When tested in accordance with 5.2.5, the horizontal lifeline system shall meet the following requirements:

a) The maximum arrest force shall be no greater than 6kN;

4.4 Corrosion resistance Perform the test against the metal parts according to 5.4, the metal parts shall be no red rust or other visible corrosion marks; but the white spots are allowed.

5.1 General

5.1.1 The test shall use an inspection instrument with an appropriate range, and the inspection of the appearance of the components shall be carried out under good light conditions.

5.1.2 Unless otherwise specified, a new horizontal lifeline device and test rope shall be used for each test.

5.1.3 If the horizontal lifeline device allows multiple personal fall protection equipment to be connected for use, the system that is composed of each type of fall protection equipment and the horizontal lifeline device shall be tested.

5.1.4 During the inspection process, the technical requirements specified in

4.1 shall be inspected through operation, trial-use, etc.; and if necessary, inspection shall be carried out in accordance with the corresponding national standards; or the manufacturer shall issue a conformity certificate for other equipment and materials.

5.2.1 Test equipment

5.2.1.1 Dynamic test frame: It shall be able to ensure that the horizontal lifeline device is firmly installed in accordance with the instructions of the product provider. When the load of the tested horizontal lifeline device is 20kN, the structural deformation at the test anchor shall be no greater than 1.0mm.

5.2.1.2 Impact force measuring device: it shall meet the requirements of GB/T 6096.

5.2.1.3 Data processing device: it shall meet the requirements of GB/T 6096.

5.2.1.4 Connector: it shall meet the requirements of GB/T 23469.

5.2.1.5 Tested heavy object: tested heavy object A is a metal cylinder with a mass of (100±1) kg, a bottom diameter of (200±10) mm, and a lifting ring at the top center; tested heavy object B is a metal cylinder with a mass It is (200±1)kg, a bottom diameter of (200±10)mm, and a lifting ring at the top center; and the tested heavy object shall be firmly assembled.

5.2.4.1 The dynamic performance test procedures of the single-stage horizontal lifeline device are as follows:

a) Install the horizontal lifeline device on the test frame according to the longest span and maximum tilt angle that are allowed in the product instructions. The installation schematic diagram is shown in Figures 3 and 4;

b) When the product takes a flexible guide rail, respectively install the impact force measuring device on both ends of guide rail of the flexible horizontal lifeline device and the mobile attachment device. When the product takes a rigid guide rail, install the impact force measuring device on the mobile attachment device;

c) Use the test rope to connect the heavy object to the mobile attachment device of the horizontal lifeline device; the heavy object shall be located at the midpoint of the span; and the horizontal distance between the tested heavy object and the mobile attachment device is no more than 300mm;

d) Move the tested heavy object downward until the sample under test fully bears its gravity and lift the heavy object to restore it to its natural state;

e) Lift the tested heavy object to the height determined in

5.2.2 and release the heavy object;

f) After the heavy object is completely stationary; check the state of the sample; and record the impact force at the mobile attachment device and the anchor;

g) Increase the mass of the tested heavy object to 300kg, keep it for 3min; and check the status of the sample;

5.2.5 Test of horizontal lifeline system

5.2.5.1 Test Principle The principles that the horizontal lifeline system is tested shall be as follows:

a) Test according to the system configuration provided by the sample provider.

b) If the guide rail is above the top of the user's head during use, the release point of the heavy object shall be flush with the connection point of the guide rail. In other cases, the release point shall be located 1.5m above the horizontal position of connection point of the guide rail. If the simulator fails to lift to the 1.5m height, the release point shall be the highest point that the simulator may reach.

5.2.5.2 Test procedures of horizontal lifeline system The horizontal lifeline system test shall be carried out within each span, intermediate anchor, and corner span. The protection equipment shall be replaced for each test. The test procedures are as follows:

a) Install samples according to the system configuration provided by the sample provider;

b) Wear protection equipment on the simulator according to the requirements of the sample provider;

c) Connect the impact force measuring device in series between the mobile anchor and the simulator through protection equipment;

d) Move the simulator, so that the mobile anchor can fully bear the weight of the simulator;

e) Connect the quick release mechanism to the simulator; raise it to a specific height and ensure that the horizontal distance from the mobile anchor not exceed 300mm;

f) Release the simulator; check the condition of the sample after the fall has completely stopped; and record the maximum impact value at the anchor and the total fall distance;

g) If the sample can be used by multiple people at the same time, use the same number of simulators to test; and the simulators shall be released at the same time; and the release position shall be located in the middle of the lifeline. The distance between the two release points shall be no greater than 0.5m.