1 General Provisions
1.0.1 This code is developed for telecommunication cable line projects to comply with applicable national policies, to be technologically advanced, financially reasonable, energy-efficient and environmentally-friendly, and to guarantee construction materials, construction quality and as-built acceptance of optical (electrical) telecommunication cable line projects meeting design requirements.
1.0.2 This code is applicable to project acceptance of optical (electrical) telecommunication cable lines on land with construction, extension and renovation natures.
1.0.3 The gauge, specification and quality of equipment and materials shall be in compliance with requirements of the approved design documentation.Uncertified ones must not be used.
1.0.4 When the telecommunication cable lines are constructed in areas with earth quake intensity of 7 and above in China, anti-seismic performance of telecommunication facilities shall be taken into consideration according to the relevant design requirements.
1.0.5 In addition to the requirements stipulated in this code, the acceptance of telecommunication cable line project shall comply with those in the current relevant standards of the nation.
2 Terms
2.0.1
microducts
microducts are small (maximum outside diameter no greater than 16.0 mm), lightweight and flexible plastic pipes.
2.0.2
microduct bundle
microduct bundleisa certain number of microducts bundled together.
2.0.3
microduct cable
microduct cable consists of bundled microducts with outer protective sheath (e.g.moisture proof layer) .
2.0.4
microduct cable to be installed by air-blowing
microduct cable to be installed by air-blowing isreferred to the cable satisfying all the three conditions as follows:
1 Must be suitable to be laid in microduct by air-blowing method;
2 Its dimension must be small enough, with diameter ranging from 3.0mm to 10.5mm;
3 The outer diameter of microduct suitable to air-blowing installation ranges from 7.0mm to 16.0mm.
2.0.5
microduct cable joint enclosure
microduct cable joint enclosure is referred to the joint where two or more microduct cables are connected under proper protection.
3 Material Test
3.1 General Requirements
3.1.1 When testing optical (electrical) cables and materials, the representatives of owner or supervisor shall be present together with constructor's representative.
3.1.2 Gauge, specification, model and quantity of optical (electrical) cables and other materials shall comply with the design requirements.Optical (electrical) cables and silicon-core pipes shall be packaged with all necessary factory documentation (the product quality conformity certificate and product test records provided by the manufacturer) , and so are other cable line equipment and materials.Any equipment or material not meeting design requirements or without quality conformity certificate shall not be used.
3.1.3 Visual inspection shall be performed to optical (electrical) cables, equipment and materials, the package shall be intact, and its outside shall be labeled withgauge, specification, model and quantity.
3.1.4 Packaging and outer sheath of cables shall be intact, and the optical (electrical) cable ends and silicon-core pipe ends shall be sealed perfectly.
3.1.5 At the open-case examination to the optical (electrical) cables, actual A and B ends of cables shall be checked and then the correct and striking marks shall be made on cable drum.
3.1.6 Examination Records of optical (electrical) cables and other materials shall be well kept after examination.
3.2 Single-drum Optical Fiber Cable Examination
3.2.1 Single-drumoptical fiber cable examination mainly includes:re-measuring of cable fiber length, measurement of optical fiber loss and observation on back scattering curve.
3.2.2 Transmission characteristics of optical fiber cables shall meet design requirements.Single-drum cable length shall be in compliance with the project design requirements and be identical to the length designated by the manufacturer.
3.3 Single-drum Cable Examination
3.3.1 Single-drum electrical cable examination mainly includes:bad pair test, sealability test of cable sheath, pair loop resistance test, insulation resistance test and voltage withstanding test.
3.3.2 Color scheme and cabling order of telecommunication cable conductors shall comply with relevant standards.Cable core conductors shall be 100%intact without any break, mix, unhealthy earthing and insulation.
3.3.3 Main electrical characteristics and insulation tests of copper-core plastic cables shall comply with the provisions set in Appendix A.
3.3.4 Filling of filled cables shall be plump, even and thorough.
3.3.5 Inflatable cables shall be filled to 30kPa to 50k Pa with dry air without pressure decrease for 3hours (6hours for armored cables) .Cables failing to meet this sealability standard shall not be used.
3.3.6 Messengers of self-suspended optical (electrical) cables shall be installed in parallel to cables.Stranded steel wires shall be twisted closely together and shall not easily loose apart after 200mm plastic sheath at cable ends stripped off.
3.4 Wire Pole Examination
3.4.1 Annular reinforced concrete pole shall meet the following requirements:
1 The cone angle of the cone-shaped poles shall be 1:75.
2 The outer appearance quality of concrete poles shall meet the following requirements:
1) Circular or vertical cracks shall not be available on the surface of prestressed and partially prestressed concrete poles.Vertical crack shall not be available on reinforced concrete poles,and the circular cracks hereof shall not be greater than 0.05mm in width.Turtle back or watery cracking are not considered as surface cracks.
2) For the pole,no mortar leakage shall be available on the grindered-side commissure,or the juncture between steel plate and pole.
3) No partial bumping damage shall be available on the pole.
4) No steel reinforcement shall be exposed on both inside and outside surface of the pole,and no concrete caving on the inside surface,and no honeycomb on the outside surface.
5) No pitted skin or onion skin shall be available on the surface of pole.
6) No concrete damage shall be available surrounding the preserved hole (opening).
Standard
GB 51171-2016 Code for acceptance of communication line engineering (English Version)
Standard No.
GB 51171-2016
Status
valid
Language
English
File Format
PDF
Word Count
42500 words
Price(USD)
300.0
Implemented on
2016-12-1
Delivery
via email in 1 business day
Detail of GB 51171-2016
Standard No.
GB 51171-2016
English Name
Code for acceptance of communication line engineering
1 General Provisions
1.0.1 This code is developed for telecommunication cable line projects to comply with applicable national policies, to be technologically advanced, financially reasonable, energy-efficient and environmentally-friendly, and to guarantee construction materials, construction quality and as-built acceptance of optical (electrical) telecommunication cable line projects meeting design requirements.
1.0.2 This code is applicable to project acceptance of optical (electrical) telecommunication cable lines on land with construction, extension and renovation natures.
1.0.3 The gauge, specification and quality of equipment and materials shall be in compliance with requirements of the approved design documentation.Uncertified ones must not be used.
1.0.4 When the telecommunication cable lines are constructed in areas with earth quake intensity of 7 and above in China, anti-seismic performance of telecommunication facilities shall be taken into consideration according to the relevant design requirements.
1.0.5 In addition to the requirements stipulated in this code, the acceptance of telecommunication cable line project shall comply with those in the current relevant standards of the nation.
2 Terms
2.0.1
microducts
microducts are small (maximum outside diameter no greater than 16.0 mm), lightweight and flexible plastic pipes.
2.0.2
microduct bundle
microduct bundleisa certain number of microducts bundled together.
2.0.3
microduct cable
microduct cable consists of bundled microducts with outer protective sheath (e.g.moisture proof layer) .
2.0.4
microduct cable to be installed by air-blowing
microduct cable to be installed by air-blowing isreferred to the cable satisfying all the three conditions as follows:
1 Must be suitable to be laid in microduct by air-blowing method;
2 Its dimension must be small enough, with diameter ranging from 3.0mm to 10.5mm;
3 The outer diameter of microduct suitable to air-blowing installation ranges from 7.0mm to 16.0mm.
2.0.5
microduct cable joint enclosure
microduct cable joint enclosure is referred to the joint where two or more microduct cables are connected under proper protection.
3 Material Test
3.1 General Requirements
3.1.1 When testing optical (electrical) cables and materials, the representatives of owner or supervisor shall be present together with constructor's representative.
3.1.2 Gauge, specification, model and quantity of optical (electrical) cables and other materials shall comply with the design requirements.Optical (electrical) cables and silicon-core pipes shall be packaged with all necessary factory documentation (the product quality conformity certificate and product test records provided by the manufacturer) , and so are other cable line equipment and materials.Any equipment or material not meeting design requirements or without quality conformity certificate shall not be used.
3.1.3 Visual inspection shall be performed to optical (electrical) cables, equipment and materials, the package shall be intact, and its outside shall be labeled withgauge, specification, model and quantity.
3.1.4 Packaging and outer sheath of cables shall be intact, and the optical (electrical) cable ends and silicon-core pipe ends shall be sealed perfectly.
3.1.5 At the open-case examination to the optical (electrical) cables, actual A and B ends of cables shall be checked and then the correct and striking marks shall be made on cable drum.
3.1.6 Examination Records of optical (electrical) cables and other materials shall be well kept after examination.
3.2 Single-drum Optical Fiber Cable Examination
3.2.1 Single-drumoptical fiber cable examination mainly includes:re-measuring of cable fiber length, measurement of optical fiber loss and observation on back scattering curve.
3.2.2 Transmission characteristics of optical fiber cables shall meet design requirements.Single-drum cable length shall be in compliance with the project design requirements and be identical to the length designated by the manufacturer.
3.3 Single-drum Cable Examination
3.3.1 Single-drum electrical cable examination mainly includes:bad pair test, sealability test of cable sheath, pair loop resistance test, insulation resistance test and voltage withstanding test.
3.3.2 Color scheme and cabling order of telecommunication cable conductors shall comply with relevant standards.Cable core conductors shall be 100%intact without any break, mix, unhealthy earthing and insulation.
3.3.3 Main electrical characteristics and insulation tests of copper-core plastic cables shall comply with the provisions set in Appendix A.
3.3.4 Filling of filled cables shall be plump, even and thorough.
3.3.5 Inflatable cables shall be filled to 30kPa to 50k Pa with dry air without pressure decrease for 3hours (6hours for armored cables) .Cables failing to meet this sealability standard shall not be used.
3.3.6 Messengers of self-suspended optical (electrical) cables shall be installed in parallel to cables.Stranded steel wires shall be twisted closely together and shall not easily loose apart after 200mm plastic sheath at cable ends stripped off.
3.4 Wire Pole Examination
3.4.1 Annular reinforced concrete pole shall meet the following requirements:
1 The cone angle of the cone-shaped poles shall be 1:75.
2 The outer appearance quality of concrete poles shall meet the following requirements:
1) Circular or vertical cracks shall not be available on the surface of prestressed and partially prestressed concrete poles.Vertical crack shall not be available on reinforced concrete poles,and the circular cracks hereof shall not be greater than 0.05mm in width.Turtle back or watery cracking are not considered as surface cracks.
2) For the pole,no mortar leakage shall be available on the grindered-side commissure,or the juncture between steel plate and pole.
3) No partial bumping damage shall be available on the pole.
4) No steel reinforcement shall be exposed on both inside and outside surface of the pole,and no concrete caving on the inside surface,and no honeycomb on the outside surface.
5) No pitted skin or onion skin shall be available on the surface of pole.
6) No concrete damage shall be available surrounding the preserved hole (opening).