MHT1064.4-2017 English PDFUS$229.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. MHT1064.4-2017: Safety code of power working with the helicopter. Part 4-Live working Status: Valid
Basic dataStandard ID: MH/T 1064.4-2017 (MH/T1064.4-2017)Description (Translated English): Safety code of power working with the helicopter. Part 4-Live working Sector / Industry: Civil Aviation Industry Standard (Recommended) Classification of Chinese Standard: V53 Classification of International Standard: 03.220.50 Word Count Estimation: 10,197 Date of Issue: 2017-01-02 Date of Implementation: 2017-04-01 Regulation (derived from): Civil Aviation Industry Standards Announcement No. 1 of 2017 Issuing agency(ies): Civil Aviation Administration of China Summary: This standard specifies the general requirements for the use of manned helicopters (hereinafter referred to as helicopters) for live working on overhead transmission lines, the safety requirements for different live working modes, and the working requirements before and after operations. This section applies to live maintenance and maintenance operations of 500 kV to 1 000 kV AC and ��500 kV overhead transmission lines using manned helicopters equipped with mission equipment. MHT1064.4-2017: Safety code of power working with the helicopter. Part 4-Live working---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.Safety code of power working with the helicopter.Part 4-Live working ICS 03.220.50 V 53 MH Civil Aviation Industry Standard of the People's Republic of China Safety Regulations for Helicopter Electric Operation Part 4.Live Work 2017 – 01 – 02 released 2017-04-01 Implementation Issued by Civil Aviation Administration of China ForewordMH/T 1064 "Safety Regulations for Helicopter Electric Operation" is divided into the following seven parts. --Part 1.General requirements; --Part 2.Inspection operation; --Part 3.Laser scanning operation; --Part 4.Live work; --Part 5.Electric water washing operation; --Part 6.Hoisting and assembly tower operations; --Part 7.Unfold the guide rope operation. This part is part 4 of MH/T 1064. This section was drafted in accordance with the rules given in GB/T 1.1-2009. This part was proposed by the Transportation Department of the Civil Aviation Administration of China. This part was approved by the Aircraft Airworthiness Certification Department of the Civil Aviation Administration of China. This part is under the jurisdiction of the China Academy of Civil Aviation Science and Technology. Drafting organizations of this section. The Second Research Institute of Civil Aviation Administration of China, State Grid General Aviation Co., Ltd. The main drafters of this section. Yan Fengshuo, Shang Kejia, Zhao Qing, Tang He, Liu Liyuan, Xiong Kui, Yu Yang, Zhu Chuanyin. MH Safety Regulations for Helicopter Electric Work Part 4.Live Work1 ScopeThis part of MH/T 1064 stipulates the use of manned helicopters (hereinafter referred to as helicopters) to carry out live work on overhead transmission lines The general requirements, the safety requirements of different live working methods and the work requirements before and after the operation. This part is applicable to the aerial transmission of 500 kV～1 000 kV AC and ±500 kV DC by manned helicopters with mission equipment. Live inspection and maintenance of electric lines.2 Normative referencesThe following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 2900 Electrician Terminology Live Work GB/T 6568 Shielding clothing for live working GB/T 13035 Insulated rope for live working GB/T 25726 1 000 kV Shielding clothing for AC live working DL 409 Safety Working Rules Power Line Part DL 779 Insulated rope tools for live working DL/T 966 Technical Guidelines for Live Working on Transmission Lines3 Terms and definitionsThe following terms and definitions apply to this document. 3.1 Helicopter live working Use helicopter-mounted equipment or devices to make operators contact with live lines for maintenance. 3.2 Potential working Operators use electrical connections to increase the potential of their body to the potential of the charged part, and to properly isolate them from the surrounding different potentials. Work on the live parts. 3.3 Screening clothing It is made of natural or synthetic materials and is completely woven with conductive fibers to prevent workers from being affected by electric fields. 3.4 Electric field shield mask The mask is made of conductive material and integrated with the shielding clothing to protect the face of the operator from the electric field. 3.5 Potential rod It is used by equipotential operators when entering and exiting equipotential to reduce the impact of discharge arc on human body and avoid pulse current on shielding clothing Metal tools that cause damage. 3.6 Minimum approach distance During live operation, the whole parts of the helicopter, including airborne personnel and objects, and any parts with different electric potentials The minimum air distance to keep. 3.7 Helicopter live working with platform method Install maintenance platforms on both sides of the helicopter or on the belly of the helicopter, and the helicopter carries live personnel on the maintenance platform to directly contact the live Lines and conduct equipotential operations. 3.8 Helicopter live working with suspension method Install hooks on the belly of the helicopter, suspend insulating ropes, and send operators or equipment (including baskets, chairs, ladders, etc.) Conduct live work at the operating point of the transmission line.4 General requirements4.1 Personnel 4.1.1 The captain performing live helicopter operations shall meet the following requirements. --Have experience in helicopter external load operations; --Not less than 2 000 h for helicopters; --Not less than 100 h for long hours of operating models; --At least 100 hours of low-altitude flight experience, including electric power operation flight experience; --Not less than 30 hours of flight training time for live operation; --- Passed live working training (online flight time is not less than 10 hours). 4.1.2 The personnel on board performing live helicopter operations shall meet the following requirements. -Good health, no physical and psychological obstacles that hinder live working; --Have basic knowledge of electrical principles and power lines, master the basic principles and operating methods of live work, and be familiar with work tools The scope of application and method of use; --Familiar with DL 409, DL/T 966 and this standard; --Pass the training and examination of the competent authority of transmission lines, hold a live working certificate, and pass the helicopter platform method or the suspension method for live working Qualified training; --Not less than 10 hours flight training time for live operation. 4.1.3 The person in charge (or safety guardian) performing live helicopter operations shall meet the following requirements. --Have more than 3 years of practical working experience in live working on 500 kV AC and above or ±500 kV DC voltage lines; --Familiar with equipment conditions, with certain organizational capabilities and accident handling capabilities; --After specialized training. 4.2 Equipment 4.2.1 Platform method live working equipment 4.2.1.1 The helicopter models that adopt the platform method for live operation shall pass the equipotential assessment test. 4.2.1.2 The design of the airborne operating platform should be determined according to the actual size of the operating helicopter, and metal materials with good conductivity and high strength should be used. Material production. 4.2.1.3 The airborne operating platform can be fixed on the front side of the helicopter by connecting parts, and the conductive elements of the platform should be connected with the conductive equipment of the helicopter. Reliable connection, the connection resistance value should not be greater than 1 Ω. 4.2.1.4 The airborne operating platform should be equipped with counterweight equipment to ensure the load balance of the helicopter. 4.2.1.5 An anti-falling system for personnel and tools shall be installed on the maintenance platform to ensure that the operators and tools will not be shaken by the helicopter. And fell from the platform. 4.2.2 Suspended live working equipment 4.2.2.1 The electrical performance and mechanical performance of the insulating ropes of suspended operators or equipment shall meet GB/T 13035 Requirements. 4.2.2.2 The suspension system should be equipped with two independent decoupling systems to ensure the safety of the operators. 4.2.2.3 The insulating rope shall meet the requirements of GB/T 13035 and DL 779, and the minimum effective insulation length shall meet the requirements of live working. From The length of the sling from the belly of the helicopter to the suspended operator or equipment should be determined according to factors such as the pilot's operating proficiency and the selected model. 4.2.2.4 Insulated tools should be protected from moisture, surface damage and dirt. Unused insulated tools should be placed on a clean, dry tarpaulin or pad. 上子上. 4.2.3 Electrical and electronic equipment The electrical and electronic equipment of the helicopter used for operation should be able to keep working normally under the corresponding strong electric field and strong magnetic field environment. 4.3 Operating environment and weather 4.3.1 The operation should be carried out under good weather conditions, the visibility under the operating cloud should be no less than 3 km, and the wind speed should be no more than 5 m/s. 4.3.2 In weather conditions where the relative humidity is greater than 80%, live work should not be carried out. If live work is required, moisture-proof Performance insulating tools. 4.3.3 In the event of sudden changes in weather during live work, which may endanger the safety of people or equipment, while ensuring personal safety, Restore the equipment to normal working conditions or adopt other measures as soon as possible. 4.4 Personnel safety protection 4.4.1 Equipotential operators should wear shielding clothing and conductive shoes for live work, and flame-retardant underwear should be worn inside the shielding clothing. Shielding performance index It shall meet the requirements of GB/T 6568 and GB/T 25726.750 kV, 1000 kV equipotential operators should wear shielding masks. 4.4.2 When using the platform method for live helicopter operations, the crew should wear a full set of shielding suits, and the performance indicators of the shielding suits should meet GB/T 6568 and GB/T 25726 regulations. 4.5 Personnel fatigue prevention measures 4.5.1 When the driver and the equipotential operator notice signs of fatigue in themselves or others, they should stop the operation immediately. 4.5.2 The unit should stop the operation and rest for at least 20 minutes if the operation on the live wire continues for more than 2 h. 4.5.3 The full-day working hours of the crew should not exceed 14 hours. 4.5.4 In any continuous 24 hours, the accumulated flight time should not exceed 5 hours. 4.5.5 In 7 consecutive days, the accumulated flight time should not exceed 35 hours. 4.5.6 In a calendar month, the accumulated flight time should not exceed 120 hours.5 Preparation before homework5.1 Preparation stage 5.1.1 The data of the lines to be overhauled (including the list of poles and towers, the external insulation account, the latitude and longitude coordinates of the poles, etc.) should be collected, and Solve the name of the line, the GPS position value of the tower, the number of the maintenance tower, the type of the tower, the arrangement type of the ground wire and the distance between the phases, the crossing, the traffic For roads, altitudes, meteorological conditions, temporary helicopter landing points, etc., carry out aeronautical chart drawing and navigation calculations. 5.1.2 According to the line data such as the pole tower structure size, height difference, span, insulator length, ground wire size, spacing and sag at the operating point, Check whether the minimum safety distance of the helicopter meets the requirements when the helicopter is in operating conditions, judge whether the helicopter can be operated with electricity, and determine the operation Work methods and required tools and equipment as well as safety measures to be taken. 5.1.3 The helicopter live working instructions shall be compiled in accordance with the corresponding operation items or operation methods, and shall be based on the requirements of the transmission line operation management unit. Request, develop a helicopter live operation plan. 5.1.4 The installation of helicopter airborne equipment shall be completed according to the operation items and operation methods, and safety protection equipment, work tools and equipment shall be prepared. Communication equipment. 5.2 Direct preparation phase 5.2.1 Live workers should check the tools and appliances, check whether the appearance of the tools and appliances is intact, including checking whether the slings are damaged and the hanging baskets Connection status, etc. 5.2.2 Before using the insulated tools, a 5 000 V megohmmeter and standard electrodes should be used for segmental testing, and the insulation between the electrodes should be measured every 2 cm. The edge resistance value should not be less than 700 MΩ. 5.2.3 Aircraft maintenance personnel should complete the calculation and adjustment of helicopter load and balance. 5.2.4 The crew should understand the flight dynamics of the flight area and obtain the latest aeronautical information, communications and navigation data. 5.2.5 The crew should go through relevant procedures such as the flight mission statement and the flight release form. 5.2.6 Before takeoff, work tickets, dangerous point control sheets and flight release sheets should be processed. 5.2.7 The person in charge of live work should contact the electric power dispatching department before the start of the work, and can only start the work after agreeing. Need to disable since When the reclosing device (or DC restart device) is activated, the permit procedures shall be performed. Report to the power dispatching department in time after the work is over.6 Work implementation6.1 Minimum safety distance 6.1.1 When operating at an altitude of 1 000 m and below, the helicopter should follow the helicopters listed in Table 1 during the live operation of the helicopter. Minimum safety distance requirements for live working. 6.1.2 When working in areas above 1 000 m above sea level, corrections should be made according to the altitude. Note 1.The values in the table apply to the average altitude of 1 000 m and below. Note 2.The data in the table have considered the influence of wire swing, line construction error, helicopter hovering swing and other factors, but not flying The influence of factors such as personnel operation and environment does not include the space occupied by the helicopter itself. 6.2 Operation safety of platform method 6.2.1 The helicopter should approach the live conductor slowly from a height at an angle of 15°～45°. 6.2.2 When the distance to the target is 10 m～15 m, the operator should assist the pilot to observe the clearance around the helicopter, especially the main rotor and tail rotor. The safe distance from live conductors should meet the requirements of 6.1. 6.2.3 When the helicopter approaches the conductor and enters the equipotential process, the airborne operator should use the potential transfer rod to transfer the potential, and the action should be level. Stable, accurate and fast. 6.2.4 During potential transfer, the potential transfer rod should be electrically connected to the maintenance platform. 6.2.5 The operator should ensure that the connection clamp is reliably connected to the wire before placing the potential transfer rod on the operating platform, and ensure that the work During the operation, helicopters and live operators maintain equipotential with conductors. 6.2.6 During the operation, the pilot should keep the hovering position of the helicopter stable at all times, and monitor the instructions on the helicopter instrument panel, the helicopter and the aircraft. Install the safe distance between the equipment and the surrounding grounding body or other phase conductors, and ensure smooth communication with the operators. 6.2.7 The ground staff should first connect the helicopter grounding wire, and then land the helicopter. The staff on board before the ground wire is not connected Should not be in direct contact with the ground. Non-professionals should not enter within a radius of 20 m from the helicopter landing area. 6.3 Suspended operation safety 6.3.1 The suspension method can use helicopter external slings, hanging baskets, hanging chairs, hanging ladders, etc. to carry operators in and out of the equipotential. 6.3.2 A reliable anti-twist device should be installed on the helicopter hook to prevent suspension operators from turning knobs and swinging in the air. 6.3.3 When the operators identify and confirm navigational obstacles and operating tower numbers, the helicopter should be suspended from the operator or the suspended object above the guide. The height of the line 30 m slowly descends close to the live conductor; the driver should check the position of the suspended operator and the distance from the surrounding live objects And adjust the flight attitude in time. 6.3.4 When the suspended operator or suspended object is 10 m～15 m away from the target, the operator shall guide the driving through communication equipment and flight gestures The crew descended the helicopter slowly. 6.3.5 During the descent process, the pilot and the operator should communicate the speed and angle of the helicopter descent in time, and adjust them in real time. 6.3.6 When the helicopter enters the equipotential process close to the conductor, the operator should use the potential transfer rod to transfer the potential, and the action should be stable and Accurate and fast. 6.3.7 During potential transfer, the potential transfer rod should be electrically connected to the suspended object. 6.3.8 The operator should ensure that the connection clamp and the wire are reliably connected before the potential transfer rod can be retracted, and ensure that the live operation is performed during the operation. Workers, suspended objects, and wires maintain equipotentiality. 6.3.9 After arriving at the working position, the operator should ensure that the safety belt has been connected to the wire before removing the connection to the insulating sling. And notify the pilot to fly the helicopter away from the line. 6.3.10 Before the helicopter lands, ground personnel should use the temporary grounding device, and follow the order of the operator or equipment after the helicopter. The discharge operation is performed sequentially. Non-professionals should not enter within a radius of 20 m from the helicopter landing area. 6.3.11 When the helicopter is landing, it should wait for the live operating personnel to land or the operating equipment (including the hanging basket, the hanging chair, the hanging ladder, etc.) to enter the ground support After the ground crew unhook the hook, the helicopter can move to the stand and land. 6.3.12 The ground staff should recover the slings in time as the helicopter descends to prevent the slings from being entangled with the helicopter rotor after being blown up.7 Work after homework7.1 Operators should check the use of tools and instruments, clean up the tools and instruments, pack them in bags (boxes), and ensure that the work is completed, the materials are cleaned, and the field is cleaned. Clean up. 7.2 After the sling is retracted, measures should be taken to prevent the sling from getting wet. 7.3 Operating equipment such as hanging baskets, hanging chairs, and hanging ladders can be placed in the ground bracket, and transported back by a transport vehicle after being securely fixed. 7.4 After the completion of the operation task, an operation flight commentary should be carried out. The main content includes but not limited to a summary of the flight situation on the day, Evaluate the situation, flight safety and various guarantees, propose improvement measures for the problems found, and teach those who violate the......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of MHT1064.4-2017_English be delivered?Answer: Upon your order, we will start to translate MHT1064.4-2017_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. 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