MH/T 1064.6-2017Safety code of power working with the helicopter. Part 6-Hoisting and erecting tower operation (English PDF)

3.1 Personnel

3.1.1 Staff composition

3.1.1.1 The operators of helicopter hoisting and tower assembly are divided into flight operators and construction operators.

3.1.1.2 The flight operator includes the operation team (pilot, co-pilot, on-board operators, aircraft maintenance personnel, operation controllers, fuel Interpreters), tower operators, ground commanders, tower commanders, etc., if necessary, can be equipped with interpreters. Co-pilot and on-board operators it can be performed by the same person according to the operating model or operating needs. If other helicopters are required to cooperate with the operation, the unit should be divided accordingly and clear responsibilities.

3.1.1.3 The construction operation party is composed of ground construction personnel, tower construction personnel, ground commanders, and tower commanders.

3.1.2 Driver qualification

3.1.2.1 The captain of the lifting and assembly tower operation shall meet the following requirements.

--Have experience in suspending helicopter external loads;

--Not less than 2 000 h for helicopters;

--Long time of operation model not less than 100 h;

--At least 100 hours of low-altitude flight experience, including electric power operation flight experience;

--Not less than 30 hours of professional hoisting flight training time.

3.1.2.2 The co-pilot for hoisting and assembly of towers shall meet the following requirements.

--Have experience in suspending helicopter external loads;

--Not less than 150h low altitude flight experience time, including electric power operation flight experience time;

--Not less than 10 hours of professional hoisting flight training time.

3.1.3 Division of Responsibilities

3.1.3.1 The flight operator is responsible for the safety of the work hook and above, and the construction operator is responsible for the safety of the following parts of the work hook.

3.1.3.2 The ground commander of the flight operation party is responsible for directing the lifting of the helicopter in the group stockyard;

Wield the helicopter to seat the tower.

3.1.3.3 The ground commander of the construction operator is responsible for directing the ground construction personnel of the stockyard according to the instructions of the ground commander of the flight operator.

Operation. The construction operation azimuth tower commander controls the operation of the construction personnel on the tower according to the instructions of the flight operation azimuth tower commander.

3.2 Equipment

3.2.1 Model selection

When selecting a model, it should be selected according to different lifting objects and working areas.

3.2.2 Supporting equipment

3.2.2.1 Basic requirements

3.2.2.1.1 The tools and equipment used in the operation should be inspected according to the regulations, and the force tools and equipment should be subjected to load test.

3.2.2.1.2 Before operation, check the operating mechanism and cables of the safety hook at the upper end of the helicopter sling and the working hook at the lower end.

Check and confirm that its performance is good.

3.2.2.1.3 The helicopter should be equipped with an anti-twist device to prevent the lifting gear from rotating in the air.

3.2.2.2 Hanging rigging

3.2.2.2.1 The length of the main sling should meet the needs of the pilot to correct the helicopter's flight attitude and the position of the hanging parts.

It is determined by factors such as the degree and the selected model.

3.2.2.2.2 The length of the hoisting point steel rope of the hoisting parts (considering four points) should be determined according to the angle between the hoisting point steel rope and the width of the hoisting part.

Less than 30°.

3.2.2.2.3 The safety factor of the connector should not be less than 2.0.

3.2.2.3 Segmentation of tower (pole) structure

3.2.2.3.1 The stability of the section structure of the tower (pole) to be hoisted shall be calculated and checked to avoid deformation or overturning of the hoisting section in the air.

3.2.2.3.2 The maximum lifting weight shall be determined by calculating the maximum continuous power meter of the operating model based on the altitude of the work site and the ambient temperature, so that each the total weight of the tower section and tools for the secondary hoisting shall not exceed the maximum hoisting weight limit.

3.2.2.3.3 When the iron tower (pole) segmented structure is hoisted and connected, there should be no more than 4 connection points when it is connected to the substructure or foundation.

3.3 Operating environment and weather

3.3.1 The helicopter should fly outside the cloud, the vertical height from the cloud base should not be less than 100 m, and the visual visibility should not be less than in the plain area.

2 km, should not be less than 3 km in hills and mountains, and the wind speed should be no more than 8 m/s.

3.3.2 Operations should start after sunrise and end no later than sunset.

3.3.3 In winter and ice disaster environment, the influence of unfavorable factors such as wing icing, snow and dense fog on the safety of helicopter flight should be avoided.

3.3.4 The construction operator shall take measures such as hardening, watering and dust reduction in the material yard.

3.4 Personnel safety protection

3.4.1 All personnel entering the site should wear appropriate personal protective equipment, including but not limited to safety helmets, windproof glasses, and protective earplugs (Cover), gloves, warning vest.

3.4.2 Workers on the tower should wear coveralls and wear safety belts at all times.

3.4.3 Ground construction personnel and tower construction personnel should wear protective earplugs (covers) during helicopter hoisting and tower assembly operations to avoid helicopter noise.

Tone damage.

3.4.4 The safety helmets and wind-proof glasses worn by on-site workers should comply with relevant safety testing standards. The gloves should be made of leather or non-conductive.

Durable fabric, the shirt is a long-sleeved tight-fitting shirt, the trousers are tight-fitting trousers up to the ankle, and the boots are at least as high as the ankle and have non-slip soles.

3.5 Personnel fatigue prevention measures

3.5.1 When the pilot and on-board operators notice signs of fatigue in themselves or others, they should immediately stop the lifting operation.

3.5.2 The working hours of crew members should not exceed 14 hours throughout the day.

3.5.3 During any continuous 24 hours, the accumulated flight time should not exceed 8 hours.

3.5.4 Within 7 consecutive days, the accumulated flight time should not exceed 40 hours.

3.5.5 In a calendar month, the accumulated flight time should not exceed 120 hours.

3.6 Communication

3.6.1 According to the operation requirements, a communication system can be set up in the on-site command center, material yard, tower position, and unit, and the communication load should be clarified.

Responsible personnel.

3.6.2 The operational communication system should be clear in levels. The communication system should be divided into two parts. the flight intercom system and the construction intercom system.

Self-independence, no interference between frequency bands. If there is a translator, the translator can connect with the two parties.

3.6.3 The intercom system in cooperation with the construction should adopt the intercom system for communication, and the flight intercom system should adopt the ultrashort wave radio air-to-ground radio system for communication.

letter.

3.6.4 The selected communication equipment shall be used only after being tested in the operation area.

3.6.5 Communication equipment should be of good performance to ensure clear communication in the loud roar of the helicopter, and closed helmets and headsets should be used.

3.6.6 The communication language should be short and clear. The flight operator and the construction operator can communicate with each other by gestures.

3.6.7 When the tower section is in place, the pilot should communicate directly with the operators on the flight operations square tower, and the other personnel should not interfere.

3.6.8 The helicopter pilot and the ground construction personnel of the stockyard should plan in advance the communication gestures and instruction transmission methods to prevent improper communication.

Accidental injury to personnel and equipment.

3.6.9 Sign language or semaphore shall be provided for emergency use.

4.1 Preliminary preparation stage

4.1.1 Technical preparation

According to the content of the project, the implementation plan for the management of the helicopter hoisting and tower assembly project, the technical plan for the construction of the helicopter hoisting tower and the helicopter crane shall be formulated Installation and assembly tower air flight operation instruction book.

4.1.2 Selection and layout of take-off and landing sites

4.1.2.1 Generally, it should be set in the stockyard, and can be set separately under special circumstances.

4.1.2.2 The takeoff and landing area shall be considered comprehensively according to the type and quantity.

4.1.2.3 The apron ground should be tamped and hardened, and the position of the landing gear wheels should be covered with steel plate with threaded pitted surface.

4.1.2.4 It should be considered whether the obstacles around the work site affect the approach and take-off of the helicopter.

4.1.3 Selection and layout of material yard

4.1.3.1 The stock yard should be close to the highway to facilitate the transportation of line equipment to the stock yard.

4.1.3.2 The average distance from the stockyard to each tower in this operation section should be close to the optimal flight radius of the helicopter, and generally not more than 10 km or One-way flight time of 10 minutes.

4.1.3.3 The material yard (including helicopter take-off and landing points) should be set up in the wasteland with hard geology. Otherwise, water spraying or other dust prevention measures should be taken.

4.1.4 Personnel preparation

4.1.4.1 During the operation of helicopter hoisting and assembly of towers, the operator can enter the main crane material yard with the permission of the project commander. In the main crane stockyard the operating staff shall obey the arrangement of the commander and carry out the work tasks as required.

4.1.4.2 On-site personnel should only approach the helicopter with the permission of the project commander.

4.1.4.3 The on-site personnel shall be in place in advance according to the requirements of the work instruction, and accept safety technical clarifications to ensure that the division of labor is clear and familiar with the relevant Safety technical measures and construction plan.

4.1.4.4 The construction personnel shall receive technical training and safety education, and shall be able to adapt to the operating conditions under the influence of helicopter ground effects.

4.1.4.5 The construction personnel shall conduct relevant drills to increase the speed of suspension, the ability and proficiency of in-position operations, and minimize the suspension of the helicopter.

Stop in place time.

4.1.4.6 Aircraft maintenance personnel, transportation control personnel and fuel supply personnel shall formulate corresponding operation measures and external communication measures.

4.1.5 Machine preparation

4.1.5.1 The helicopter should be in an airworthy condition, and the pendants and hangers directly connected to the fuselage should have an airworthiness certificate and be in an airworthy condition.

4.1.5.2 Assembling the supporting tools of the pole tower shall be inspected in appearance and quantity to ensure that the strength and quality meet the requirements.

4.1.5.3 Before lifting the tower section, the ground construction personnel should check whether the steel rope of the tower section lifting point is fixed and the length is correct.

4.1.5.4 The specifications of the cable on the tower shall be calculated first, and the assembly and measurement shall be carried out on site.

4.1.5.5 Hoisting equipment and machinery shall at least include.

--Helicopters and logistics support facilities (including oil tanks, oil pumps, oil trucks, lifts, forklifts, etc.);

--Anti-twist device;

--Professional helicopter sling and electric working hook;

--The lifting point steel rope of the iron tower (or lifting section);

--Inner (outer) guide rail and vertical limit and horizontal limit device.

4.1.5.6 The communication equipment should be debugged normally.

4.1.5.7 Fire fighting equipment and equipment should be provided in the construction site.

4.1.6 Construction work arrangement

4.1.6.1 The operation of helicopter hoisting and tower assembly shall be arranged on site to meet the requirements of safe, continuous and rapid operation of helicopters.

4.1.6.2 The progress of coordinated operations such as the assembly of the stockyard tower section, the construction of the tower and the construction of the tower, the transportation and transfer of personnel and machinery should be in line with the helicopter operation Closely connected.

4.1.7 Flight operation arrangements

4.1.7.1 The pilot shall determine the flight route together with the operation controller, clarify the method of entering and exiting the landing and alternate airport, and jointly develop the flight meter Plan, submit the flight plan application form to the relevant military and civil aviation departments within the prescribed time limit.

4.1.7.2 The crew should understand the special flight regulations in the flight route or flight area.

4.1.7.3 The crew shall determine the take-off weight and center of gravity range of the helicopter.

4.1.7.4 The operation controller should understand the flight route or flight area of the navigation notice, and check the navigation, communication, and communication of the flight route or flight area.

Navigation data should understand the development trend of the operating airspace and route weather, report to the captain in time, and adjust the operation plan reasonably.

4.1.7.5 The pilot should be familiar with the nature of the task, study the essentials of hoisting operations, clarify technical requirements, and coordinate with the hoisting operators on the aircraft.

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4.1.7.6 It is advisable to conduct a test flight on the flight route or flight area before the formal operation.

4.1.7.7 If there are other helicopters that cooperate with operations, the horizontal distance and flight altitude difference between the two aircraft and the respective paths of the two aircraft should be clearly defined.

Ensure flight safety.

4.1.8 Emergency treatment plan

4.1.8.1 The emergency treatment plan shall be jointly studied and determined by the flight operator and the construction operator.

4.1.8.2 Emergency disposal area should be set in the emergency treatment plan.

4.1.8.3 When hoisting a tower section close to the maximum load requirement, the flight operator shall make adequate preparations based on the performance of the helicopter and formulate emergency measures in advance.

Management measures.

4.2 Direct preparation phase

4.2.1 All operators of the flight operator and construction operator should be ready.

4.2.2 The captain listened to the aircraft maintenance personnel's report on the aircraft preparation, inspected and received the aircraft, and signed the flight record sheet.

4.2.3 The crew should understand the flight dynamics of the flight area and obtain the latest aeronautical information, communications and navigation data.

4.2.4 The crew should go through relevant procedures such as the flight mission statement and the flight release form.

4.2.5 The construction operator should complete the assembly and inspection of the iron tower (tower section) to confirm that the guide rails, lifting point steel ropes and other accessories have been installed.

The suspension tower section has been placed in order.

4.2.6 Security personnel should carry out pre-flight clearance and alert work for hoisting towers, material yards, take-off and landing yards.

4.2.7 The assembly site should be equipped with a sprinkler to ensure that the ground is moist and avoid dust.

5.1 Flight Process of Hoisting Tower Assembly

5.1.1 Lifting stage

When hoisting the tower section, the helicopter should first hover over the tower section, and the ground construction personnel shall complete the hooking, and wait for the ground construction personnel to install from the tower section.

After evacuation, slowly lift the tower section off the ground.

5.1.2 Flight phase

5.1.2.1 During the flight phase, uniform acceleration should be guaranteed, but the transition speed should be deviated to avoid causing the helicopter and the tower (or tower section) to vibrate.

5.1.2.2 When the tower (or tower section) oscillates severely due to the influence of multiple air currents (or passing through clouds by mistake) during the flight, the pilot should not respond urgently.

Manipulate to avoid mistakes and increase its swing range. When manoeuvring is really necessary, the helicopter should be moved sideways to the swing direction of the iron tower (or tower section) to reduce the swing of the helicopter.

5.1.2.3 During the flight, the control pilot should maintain a good flight state and correct the deviation in time if the deviation is found; the non-control pilot should observe the suspended tower section the stability and flight altitude, speed, descent rate, heading and working conditions of each system, and provide communication prompts. Hang the tower (or tower Paragraph) When the shaking is relatively large, the manipulating driver is difficult to control, the non-manipulating driver can participate in the manipulation.

5.1.2.4 When the external iron tower (or tower section) of the helicopter flies over the tower, the pilot should maintain the state and altitude of the helicopter and descend slowly.

If fine adjustment is required, the flight operation should be gentle and delicate.

5.1.3 In-place assembly stage

5.1.3.1 While observing from the top, the pilot shall accept the command of the operator on the flying square tower and cooperate with the tower (or tower section) in place.

5.1.3.2 During the process of lifting and assembling the tower by helicopter, the construction personnel on the tower shall cooperate to complete the docking operation.

5.1.3.3 The pilot should confirm that the hoisting tower section is in place with the operator on the flying square tower before performing the helicopter decoupling operation.

5.2 Emergency measures for aerial operations

5.2.1 In the event of a situation that endangers flight safety or needs to deviate from the operation plan, the captain shall make emergency response. Take emergency procedures at the time, the helicopter should be declared in a state of emergency, and the emergency situation and the measures taken should be reported to the ground commander in time.

5.2.2 According to the nature of the failure, flight conditions and the time available for handling, the captain should be allowed to deviate from the prescribed operating procedures and methods, depending on the situation.

The minimum weather standards and regulations stipulate, but the principle should be in accordance with the emergency response needs.

5.2.3 The captain has the final decision right to take emergency procedures and ensure flight safety. All crew members should follow the command of the captain and do their best Assist the captain. The captain should also listen to the opinions of other crew members and take the safest measures as far as possible depending on the situation.

5.2.4 After an emergency occurs, the on-site personnel should initiate emergency handling procedures.

5.3 Special handling

5.3.1 Abrupt weather

If the weather in the lifting yard and tower area does not meet the requirements, operations should be stopped.

5.3.2 Throwing outside hanging objects

In the following cases, the external hanging objects can be thrown according to the situation.

- When you stray into dangerous weather, cannot see the ground, or lose contact with the ground;

--When the cargo is scraped to an obstacle during the hoisting operation and the helicopter cannot be controlled;

--When the hoisting tower section swings severely, the handling is invalid, and the flight status is difficult to control;

--When the helicopter fails to make an emergency landing with the external hanging tower section;

--When dual-engine failure;

--When a single engine fails and the single engine cannot be hung outside for a safe landing;

--When it feels that safety cannot be guaranteed when flying outside.

When the above situation occurs, the external hanging objects can be thrown by electric or mechanical throwing, and should avoid the crowded or built-up areas, and throw into the application as much as possible.

Urgent throwing area.

5.3.3 Accidental decoupling treatment

5.3.3.1 In case of accidental decoupling in the air, immediately return to the temporary take-off and landing point.

5.3.3.2 The ground personnel should be notified immediately to rush to the decoupling position to check the impact of the projectile o...