Quality inspection of security nets

(1) Security network is a special labor protection supplies involving national property and personal safety. The product quality must be passed through the inspection of the supervision and inspection department designated by the state and obtained the production license before it can be produced. Each batch of security networks must have a inspection report from the supervision and inspection department. Each security network should be attached to the national supervision department for inspection certificate and the certification of the enterprise self -inspection in different locations. At the same time, there should be signs, and the signs should be permanently marked. The content of the sign should include: production enterprise name, manufacturing date, batch number, materials, specifications, weight and production license number.

(2) Security nets are divided into Pingwang (P), Liwang (L), and Demon Safety Network (ML). The security net is mainly composed of sidelines, tie ropes, tendon ropes, and net ropes. The dense -type safety net is composed of mesh body, ring buckle, edge rope and additional rope. The physical mechanical performance of the security network is the main indicator of the quality of the safety network. Its content includes: edge rope, tie rope, net rope, and tendon rope. The densely dense security networks include: fracture strength, fracture and elongation, strong tensile resistance, torn powerful, penetrating, aging, fracture and strong reservation rate, and open -eye buckle powerful tail flame retardant performance. Both Pingwang and Li.com should have impact resistance. Liwang cannot replace Pingwang. It should be divided into Pingwang or Liwang according to the needs of construction and load height. Pingwang load strength requires greater than the establishment of the network, the materials used are more, and the weight is greater than the stand. Under normal circumstances, Pingwang is greater than 5.5kg, and Li.com is greater than 2.5kg.

(3) Security network mainly uses open -air operating venues. Therefore, we must have weather resistance. Over -resistant materials include nylon, Veon and polyester. The materials used in the same network should be the same, and its wet and dry power ratio should be greater than 75%, and the total weight of each network does not exceed 15kg. The renewal and yin burning time of the flame retardant safety network must not exceed 4S.

(4) The width of the flat net is not less than 3m, and the width of the stand and dense safety network is not less than 1.2m. The length of the tie rope is not less than 0.8m. The distance between the safety net rope and the tie rope should not be greater than 0.75m. The spacing of dense security mesh rope and tie rope should not be greater than 0.45m, and the distance between the safe mesh rope should not be too small. Generally, it is specified that it is more than 0.3m. The security net can be divided into manual knots and mechanical knots. Mechanical knot can be divided into knots and no knots. In general, the intensity of nodules without the nodule is higher than that of the nodule strength. Net knots and section heads must be fixed and firm, not to move, avoid increasing mesh eyes and uneven edges. The above situation will lead to inconsistent stress until the net rope breaks.