GB/T 51167-2016 English PDFUS$1059.00 · In stock
Delivery: <= 6 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 51167-2016: Code for acceptance of optical fiber submarine cable systems engineering Status: Valid
Basic dataStandard ID: GB/T 51167-2016 (GB/T51167-2016)Description (Translated English): Code for acceptance of optical fiber submarine cable systems engineering Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: Q40 Classification of International Standard: 81.080 Word Count Estimation: 53,572 Date of Issue: 2016-01-04 Date of Implementation: 2016-08-01 Quoted Standard: YD 5044; GB 51171; GB/T 51126; YD/T 5179 Regulation (derived from): Housing and Urban Construction Notice No.1025 Issuing agency(ies): Ministry of Housing and Urban-Rural Development of the People's Republic of China; General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Summary: This standard is applicable to submarine cable and submarine optical cable digital signal transmission system and related auxiliary system engineering acceptance. GB/T 51167-2016: Code for acceptance of optical fiber submarine cable systems engineering---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.1 General 1.0.1 In order to unify and standardize the construction of submarine optical cable projects, so that submarine optical cable projects comply with relevant national policies, advanced technology, reasonable economy, safety and reliability, energy saving and environmental protection, this specification is formulated. 1.0.2 This specification is applicable to the engineering acceptance of submarine optical cable lines and digital signal transmission systems of submarine optical cables and related auxiliary systems. 1.0.3 The equipment of submarine optical cable projects constructed in areas with seismic fortification intensity 7 and above shall meet the seismic performance requirements of communication networks. 1.0.4 In addition to conforming to this specification, the acceptance of submarine optical cable projects should also comply with the relevant current national standards. 2 Terms and symbols 2.1 Terminology 2.1.1 Submarine repeater Submarine optical signal amplification equipment composed of one or several regenerators or optical amplifiers and other related devices. 2.1.2 Repeated submarine cable system with relay submarine cable system Submarine optical cable transmission system using submarine optical repeater in the submarine line. 2.1.3 Repeaterless submarine cable system Submarine optical cable transmission system without submarine optical repeater in the submarine line. 2.1.4 beach manhole The man well installed on the landing beach of the submarine optical cable is used to terminate the submarine optical cable and connect the land optical and cable. 2.1.5 submarine cable landing point cable landing point The location of the joint point between the submarine optical cable and the land optical cable is generally located on the beach manhole. 2.1.6 submarine cable landing station cable landing station Terminal station for submarine fiber optic cable systems. Submarine optical cable terminal equipment, monitoring equipment and remote power supply equipment can be installed in the submarine optical cable landing station. 2.1.7 sea wall A dyke on the coast to keep out the sea. 2.1.8 Submarine cable segment The collection of all submarine cable system components between two adjacent submarine cable terminal equipment connected on the same pair of optical fibers. 2.1.9 Anchorage area A special area at sea where designated ships can drop anchor. 2.1.10 landing section landing section The submarine optical cable laid in the section from the beach man's well to the water depth of 5m. 2.1.11 remote power supply system power feeding system A power supply system that provides power to submarine equipment using the loop formed by the conductor in the submarine optical cable and the earth. 2.1.12 cable route desktop study According to the design of the topology structure of the submarine optical cable system, through the collection and analysis of existing geophysical data, marine environmental elements and marine development activities, one or more technically and economically feasible submarine optical cable routing schemes are proposed. 2.1.13 Ocean route survey route survey Using geological sampling, geophysical surveying, on-site observation and other professional technical methods, conduct on-the-spot investigations on the routing scheme proposed by the routing pre-selection tabletop research, and determine the best routing scheme after comprehensive evaluation and comparison of the obtained data, and provide for the optical cable project. Design and construction provide scientific and technical basis. 2.2 Symbols English abbreviation English name Chinese name ASE Amplified Spontaneous Emission Amplified spontaneous emission BER Bit Error Ratio bit error rate BU Branch Unit subsea branch unit C-OTDR Coherent Optical Time-Domain Reflectometer Coherent Optical Time Domain Reflectometer ODF Optical Distribution Frame Optical Distribution Frame OSNR Optical Signal to Noise Ratio Optical Signal to Noise Ratio OTDR Optical Time-Domain Reflectometer Optical Time Domain Reflectometer PFE Power Feeding Equipment Remote power supply equipment PMD Polarization Mode Dispersion Polarization Mode Dispersion QQ factor Q value SDH Synchronous Digital Hierarchy synchronous digital system SESR Severely Errored Second Ratio Severely Errored Second Ratio WDM Wavelength Division Multiplexing 3 Inspection of main equipment and equipment3.1 General provisions 3.1.1 When inspecting equipment and equipment, the representative of the construction party or the representative of the supervisor and the construction party should be present at the same time. 3.1.2 Appearance inspection should be carried out for equipment and equipment, and the specifications and models should be checked, and the quantity should be counted. When abnormalities are found, key inspections should be carried out. 3.1.3 The inspected equipment and equipment should be recorded well. 3.2 Equipment inspection 3.2.1 The equipment specifications, models and quantities shall meet the requirements of the order contract and design documents. 3.2.2 The outer packaging of the equipment should be complete, without damage, without signs of moisture, fire, etc., and without obvious dents. 3.2.3 The equipment should be checked and checked according to the packing list, and records should be made. 3.2.4 After the inspection of the equipment, it should be classified and stored, marked, indicating the type and quantity of the equipment, and attention should be paid to the storage of small parts to prevent loss. 3.2.5 After unpacking and inspecting the goods, the on-site cleaning work should be done well, and it should be confirmed by the construction party or supervisor. 3.2.6 Check the factory test records of the equipment, which shall comply with the equipment order contract and design requirements. 3.3 Equipment inspection 3.3.1 The specifications, models and quantities of the equipment shall meet the requirements of the order contract and design documents. 3.3.2 The inspection of terrestrial optical cables, optical fiber distribution frames and terrestrial optical cable splice boxes shall comply with the relevant provisions of the current national standard "Code for Acceptance of Communication Line Engineering" GB 51171. 3.3.3 Optical cable terminal boxes, land cable splice boxes and beach splice boxes shall meet the following requirements. 1 All functional modules should be complete and the box body intact. 2 Plastic parts should have no burr, no air bubbles, no cracks and voids, no warping, no impurities and other defects. 3 The surface of metal structural parts should be smooth and uniform in color. 4 The adhesion of the coating layer should be firm without defects such as peeling and paint falling off. 5 All fastener connections should be firm and reliable; the sealing strip of the box body should be bonded flat and firm, and the accessories are complete. 6 The opening and closing of the door lock of the optical cable terminal box should be flexible and reliable, and there should be eye-catching high-voltage warning signs. 3.3.4 Before shipment, the submarine optical cable should undergo visual inspection and photoelectric index test and acceptance, and the test index should meet the requirements of the contract and design index.4 Preliminary preparations for the laying of submarine optical cable lines4.0.1 The submarine optical cable laying construction permit shall be obtained before the submarine optical cable laying construction. 4.0.2 Non-PRC nationality vessels participating in the submarine optical cable project shall obtain a non-open waters entry permit. 4.0.3 The construction of beach manholes should be completed before the submarine optical cable landing construction. Beach manholes should be equipped with protective grounding devices, and the grounding resistance of the protective ground should not exceed 10Ω. 4.0.4 Sea-sweeping and obstacle-clearing operations for submarine optical cable ocean routes shall be completed in accordance with the engineering contract and design requirements.5 Land optical cable laying and grounding device installation and testing5.0.1 The marine grounding electrode should be buried on the beach, and the grounding resistance should meet the design requirements. 5.0.2 After the submarine optical cable lands, the terminal of the manhole on the beach, the connection between the submarine optical cable and the land optical/cable, and the connection of the lightning protection grounding shall meet the design requirements. 5.0.3 When laying by pipeline, the terrestrial optical cable and remote power supply cable/sea lead cable should occupy different (sub) pipe holes. 5.0.4 The cable laying installation requirements and test items between the submarine optical cable landing point and the submarine optical cable landing station shall comply with the relevant provisions of the current national standard "Code for Acceptance of Communication Line Engineering" GB 51171. 5.0.5 The laying and installation of remote power supply cables and sea lead cables shall meet the design requirements. 5.0.6 The terminal and protective installation of the land optical cable and remote power supply cable/sea lead cable in the landing station shall meet the design requirements. 5.0.7 The DC resistance and ground insulation resistance of remote power supply cables and lead cables to the sea should be tested, and the test results should meet the design requirements.6 Laying and testing of submarine optical cables6.0.1 Submarine optical cables should be regularly inspected for appearance and tested for photoelectric indicators during shipment, and all test indicators should meet the requirements of the engineering contract and design. 6.0.2 Submarine optical cables and equipment that do not meet the requirements shall not be used in the project. If they are general defects, they can be used only after they are repaired; the submarine optical cables and equipment that have passed the test and inspection should be recorded. 6.0.3 The laying of submarine optical cables shall comply with the following regulations. 1 The bending radius during the laying of the submarine optical cable should not be less than 1m or should be in accordance with the engineering design requirements; 2 The laying of the submarine optical cable should be attached to the seabed, and the laying margin should meet the engineering design requirements; 3 The laying of submarine optical cables should not be kinked or looped; 4 The deviation between the actual laying position of the submarine optical cable at sea and the optimal route determined by the ocean route survey shall meet the engineering design requirements; 5 During the laying process, submarine optical cables, submarine optical cable splice boxes, submarine branch units and submarine optical repeaters should not be damaged; 6 For submarine optical cables with repeaters, DC voltage and current characteristics and insulation resistance tests should be carried out every day and after the construction of each optical repeater/submarine branch unit and after each connection. When conditions permit, it is advisable to conduct C- OTDR test, and the test results should be recorded; 7 For unrepeated submarine optical cables, OTDR and insulation resistance tests should be carried out every day, after the construction of the submarine branch unit and after each connection, and the test results should be recorded; 8 During the embedding process, monitoring instruments should be used to monitor the working status of the buried machinery underwater, the embedding depth and the tension of the optical cable at any time; the embedding depth and the tension of the optical cable should meet the technical contract and design requirements; 9 The optical fiber connection should adopt the fusion splicing method, and the joint loss should meet the design requirements; 10 When submarine optical cables intersect with existing submarine optical cables, cables, and pipelines, the angle of intersection shall not be less than 60°. When submarine optical cables intersect with submarine pipelines, protective measures shall be taken for submarine optical cables; 11 After the construction of the buried section of the submarine optical cable, the post-embedding inspection should be carried out. The total length of the inspection section should meet the contract requirements, and the sections that have been checked to confirm that the buried depth does not meet the standard should be re-embedded; the key inspection sections should include, but not limited to, the construction joints, optical cable/pipe crossings, burial plow release and lifting, passages where burial depth is suspected not to have been reached. 6.0.4 Landing of submarine optical cables shall comply with the following regulations. 1.Detailed schemes and plans should be formulated before construction; 2 It is advisable to set up construction warning ships; 3 The buried depth of the submarine optical cable gully in the landing section and the length of the reserved optical cable at the shore should meet the engineering contract and design requirements; 4 The length of the installation joint sleeve shall meet the engineering contract and design requirements; 5.The armor of the submarine optical cable should be fixed in the manhole on the beach; 6 The way of submarine optical cable crossing the seawall shall meet the requirements of the engineering contract.7 Landing station equipment installation7.0.1 The installation requirements of submarine optical cable terminal equipment shall comply with the current industry standard "Synchronous Digital Hierarchy (SDH) Optical Fiber Transmission System Engineering Acceptance Specification" YD 5044 and the current national standard "WDM) Optical Fiber Transmission System Engineering Acceptance Specification GB/T 51126 related regulations. 7.0.2 The installation of remote power supply equipment should meet the design requirements.8 Log in to the station equipment function check and local machine test8.1 Functional inspection and local test of submarine optical cable terminal equipment 8.1.1 The terminal equipment function inspection and local machine test of the non-repeater WDM submarine optical cable system should comply with the relevant provisions of the current national standard "Code for Acceptance of Wavelength Division Multiplexing (WDM) Optical Fiber Transmission System Engineering" GB/T 51126. 8.1.2 The terminal equipment function inspection and local machine test of the non-repeater SDH submarine optical cable system should comply with the relevant provisions of the current industry standard "Synchronous Digital Hierarchy (SDH) Optical Fiber Transmission System Engineering Acceptance Code" YD 5044. 8.1.3 The functional inspection of the terminal equipment and the local test items of the WDM submarine cable system with repeaters shall include the following contents, and the test results shall comply with the supply contract and design requirements. 1 power supply voltage test; 2 Wavelength converter output optical power and receiving sensitivity test; 3 Optical amplifier output power test; 4 Alarm function inspection; 5 protection switching test; 6 At least 3 consecutive days of stability testing; 7 Integration verification test of submarine optical cable terminal equipment, remote power supply equipment, line monitoring equipment and network management equipment and other in-station equipment. 8.2 Functional inspection and local test of remote power supply equipment 8.2.1 The following basic functions and performances of remote power supply equipment should be checked and tested, and the results should meet the following requirements. 1 The voltage range of the equipment power supply and the switchover of the main and standby power supply boards of the equipment shall meet the requirements of the design and equipment specification; 2 When the cabinet door of the remote power supply equipment or the optical cable terminal box is not locked, the power supply shall not be started; 3 When the remote power supply equipment cabinet door or optical cable terminal box is opened, it should be shut down urgently; 4.Within the set safe voltage range, it should have constant current output function; 5.Should have constant voltage output function; 6 The sea ground and station ground can be switched; 7 The output voltage polarity can be switched; 8.When the output voltage is too high, the device should automatically shut down; 9 When the output current is too small or too large, the device should automatically shut down; 10 The load of the active and standby power supply conversion modules can be shared, and the active and standby power supply conversion modules can be switched. 8.2.2 The following alarm functions of remote power supply equipment should be checked, and the inspection results should meet the design and contract requirements. 1 Alarm when the optical cable terminal box is opened; 2 Cabinet open alarm; 3 Current reduction alarm; 4 Current rise alarm; 5 Voltage rise alarm; 6 Voltage drop alarm; 7 station ground fault alarm; 8 Ocean ground fault alarm; 9 Low battery voltage alarm; 10 Shutdown alarm. 8.2.3 Remote power supply equipment should detect the output current adjustment range and adjustment step, and the results should meet the contract requirements and design requirements. 8.2.4 Remote power supply equipment should be loaded with a test load, and the maximum output voltage and nominal operating current 24h stability test should be carried out, and the results should meet the contract requirements and design requirements. 8.2.5 Remote power supply equipment should be loaded with test loads to detect the function and performance of modulating low-frequency detection signals on the DC output current, and the results should meet the following requirements. 1 The remote power supply equipment should have the function of modulating low-frequency detection signals with different amplitudes on the DC output current under the normal working and non-working states of the transmission system; 2 The detection signal frequency should be adjustable between 4Hz and 50Hz, and its frequency stability should meet the requirement that the 24h frequency change is not greater than ±0.1Hz.9 Submarine optical cable system function inspection and performance test9.1 Line Test 9.1.1 Submarine cable lines without repeaters shall undergo the following tests and the test results shall meet the design requirements. 1 Line length and fiber attenuation test; 2 PMD test; 3 Insulation resistance test; 4 For optical cables with power supply conductors, perform a DC resistance test. 9.1.2 Submarine cable lines with relays shall undergo the following tests and the test results shall meet the design requirements. 1.Line length and fiber attenuation test of the first optical relay section; 2 In the case of remote power supply equipment power supply, conduct C-OTDR test; 3 In the case of remote power supply equipment power supply, carry out optical fiber residual dispersion test; 4 Line insulation resistance test; 5 Test line voltage and current characteristics with remote power supply equipment; 6 Line capacitance test. 9.2 Function inspection and performance test of ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 51167-2016_English be delivered?Answer: Upon your order, we will start to translate GB/T 51167-2016_English as soon as possible, and keep you informed of the progress. 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