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Jiangsu YueShun Construction Engineering Co., Ltd
Hand machine: 15351551158
              13705105077
Contact person: Manager Shi
Tel: 0515-88266009
Official website: alexcaseybaby.com
Address: room 208, party masses Service Center, Sanzao village, Xinxing Town, Yancheng City

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  • Chimney installation ladder and monitoring platform
  •  Chimney installation ladder and monitoring platform

    In order to monitor the flue gas emission of coal-fired boiler, it is decided to install a flue gas online detection platform at 35m (i.e. H = 35m) at the height of 100m chimney, which can be used for upper and lower use: rotary ladder of 35m, and derusting and anti-corrosion of the rotary ladder of chimney. According to the site observation by both parties, combined with the company's construction technology and experience for many years, the following construction scheme is proposed.

    2、 Construction process

    Construction preparation → processing and forming of steel components and anti-corrosion (one coat of primer) → welding of support → installation of spiral ladder → welding of railing → anticorrosion of chimney rotary ladder (two coats of finish paint)

    2、 Construction measures of rotary ladder:

    1. Fabrication of wallboard: 60 × 6 angle steel is used as bracket and support, and 25 steel pipe is used for railing column; 25 steel pipe is used for upper frame, 40 × 4 flat iron is used in middle of frame, and 70cm × 23cm galvanized grid plate is used for step.

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    2. Installation: according to the size of the chimney outer wall, the support point of the wall panel (as the fixed point of the rotary ladder) is installed at the place where the platform is installed with the expansion screw of φ 16, and then the pedal is welded, and then the column, handrail and guardrail are welded for installation, so that the rotary ladder forms an integral seat, thus forming a whole rotary ladder.

    3、 Technical measures:

    1. This project adopts the construction operation of high-altitude suspended seat type climbing board without scaffolding. During the operation, "s" type steel hook is made of φ 25 steel bars, which is fixed at the fixed position of the lower platform of the chimney. The pulley is hung on the "s" steel hook, and then a φ 18m / M manila rope passes through the pulley and is anchored at a fixed position. The other end of the manila rope is fixed with a "U" type rivet lock, and the movable seat type climbing plate is fixed on the "U" type rivet lock. The construction personnel operate on the movable seat type climbing board Make. During the construction operation, a simple derrick boom is fixed at the outer side of the platform railing at the lower layer of the chimney, and a 1t pulley is fixed on the derrick pole, and a Φ 18mm manila rope is used as the vertical transportation steel member.

    4、 Quality assurance measures:

    1. Our company adheres to the quality policy of "user is God, quality is life", seriously operates the GB / t19002-9002 quality management mode, carries out quality supervision on different projects and each process, so as to make the quality of materials, semi-finished products and finished products in the construction process under control, so as to ensure the project quality fundamentally and effectively.

    2. All operators must strictly follow the technical, quality and safety disclosure contents, and welding personnel must be required to work with certificates.

    3. After the completion of the fabrication of the steel components, rust removal is required. The primer shall be applied after derusting, and the paint shall be manually applied to ensure that the thickness of the paint film meets the design requirements.

    4. When several kinds of welds are to be welded, the transverse seam with large shrinkage deformation should be welded first, then the longitudinal weld, or the butt weld and then the fillet weld. The main weld of welded section steel shall be welded before assembling stiffener parts.

    5. Before construction, the overall dimension and welding quality of steel members must be rechecked before construction. Technical disclosure must be carried out before construction.

    6. During the construction, the special type of work personnel must have the employment certificate issued by the labor bureau. During the construction, the three inspection (self inspection, mutual inspection, professional inspection) system shall be adhered to, and the process quality inspection shall be strictly carried out.

    7. After the installation and acceptance is qualified, the welding seam coating, welding spatter, dust and other debris on the parts to be coated shall be cleaned up, and the welding parts shall be coated with anti rust primer.

    8. After the installation and acceptance of the steel structure of the overall platform is qualified, the welding coating, welding spatter, dust and other impurities on the parts to be coated shall be cleaned up, and the welding parts shall be coated with anti rust primer. 9. The paint shall be prepared in strict accordance with the standard index specified in the "guide for use" of paint and the product instruction manual. The preparation and mixing of paint must be carried out by professionals. The product manual shall be carefully read, clarified and understood, and the mixing proportion shall be strictly controlled to master the paint mixing concentration. Special containers and tools must be used for paint mixing, and the amount of paint mixing should be strictly tracked on the construction amount of that day, which will be used up on the same day. No pinholes, cracks, peeling off and missing coating are allowed on the paint surface after construction. The coating shall be smooth and smooth without flowing, scratch and orange peel.

    10. The interval time of each painting shall not be less than 12 hours, and the next painting process shall be carried out. The paint surface shall be uniform in color and evenly painted without missing coating and sagging.

    6、 Safety protection measures:

    1. The project adheres to the guiding ideology of "safety production, responsibility is more important than Mount Tai", implements the policy of "safety first, prevention first", and establishes a safety construction management system in which the project manager is in charge of the safety construction, the full-time safety officer is specially responsible for the safety construction, and the part-time safety officer of each construction team is responsible for the specific work.

    2. Establish and improve the safety construction rules and regulations, and strictly implement the construction "safety agreement" regulations. The safety supervision department of the factory has the right to deal with and punish those who violate the construction safety.

    3. Before the construction, the safe construction area should be set up first, the safety construction area should be set up with fence or rope with eye-catching safety signs, and several warning signs of "working at height" should be set up. It is strictly forbidden for non construction personnel to enter the construction site without permission.

    4. When entering the construction site, the construction personnel must wear labor protection articles and safety helmets. When climbing high, they must fasten the safety belt and safety rope, and implement double insurance.

    5. The water and power required for the construction of the project must be lapped at the special on-site maintenance water and power supply designated by Party A.

    6. The machines, tools and lifting ropes of the project construction must be inspected and qualified before entering the construction site. Regular and irregular inspection is required during the use process. If there is any discrepancy, it shall be replaced immediately.

    7. When lifting steel members, the lifting or lowering should be stable to avoid emergency braking or impact. The signal is clear, loud and clear, and illegal operation is strictly prohibited. After installation, the quality of the components must be checked, and the shackles can only be broken out if they are safe and reliable. The work must reach the safe position every day before work can be finished.

    8. The small tools used by the construction personnel during operation shall be put into the tool kit, which shall be up and down with the personnel, and one end shall be fixed with ropes during operation.

    9. It is strictly forbidden to throw objects or drop objects from high places. The construction wastes such as iron slag blocks shall be completed on the same day and cleaned on the same day, so as to clear the materials after the construction.

    7、 Fire fighting measures

    1. Implement the working principle of "prevention first, fire control combined".

    2. The person in charge of fire safety shall be designated for each working face, cable and control cabinet on the construction site, and sufficient fire prevention equipment shall be provided.

    3. Inflammable and explosive materials (paint, etc.) used in construction shall be managed and stored in strict accordance with relevant safety requirements.

    4. Learn and train the construction personnel on the knowledge of fire prevention and explosion protection.

    5. Smoking shall be strictly prohibited in the construction area and signs shall be set up for warning.

    8、 Management of construction safety supplies

    1. Management account shall be established for safety articles used in construction (such as lifting rope, seat climbing board, safety belt, etc.), which shall be numbered and marked.

    2. Safety articles shall be inspected and tested regularly, and unqualified products after verification shall not be used.

    3. In case of windy weather, the operation shall be stopped.

    4. Accept the inspection and acceptance of the local competent safety department at any time.

    9、 Construction electricity safety management

    1. There is a special person to manage the construction electricity, and is responsible for the maintenance and connection of power supply at the construction site.

    2. The construction power distribution box shall have the standard distribution box approved by the safety inspection department.

    3. The direction of directly buried temporary power cable shall be marked, and the open wire shall be provided with protective pipe and relevant measures.

    4. Office, warehouse, living quarters, lighting power should be laid with open wires. It is strictly forbidden to pull or connect wires arbitrarily.

    5. All electric tools and electrical equipment shall be equipped with leakage protector, and the shell of electric equipment shall be connected with zero protection and be repeatedly grounded.


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Tel: 0515-88266009; mobile phone: 15351551158; 13705105077, manager; address: room 208, Party mass service center, Sanzao village, Xinxing Town, Yancheng City