Alloy steel refers to steel with high strength and good chemical stability at high temperature. It includes two types of anti oxidation steel (or high temperature resistant steel) and hot steel. Anti oxidation steel generally requires good chemical stability, but the capability is limited. High temperature strength and the corresponding oxidation resistance of heat and strong steel are required. Heat-Resistance Steel is often used in the manufacture of boiler, steam turbine, power machinery, industrial furnace and aviation, petrochemical and other industrial sectors in the work of the high temperature parts. In addition to the requirements of high temperature strength and high temperature oxidation corrosion, sufficient toughness, good shaping and welding are also required according to the different use, as well as a certain organizational stability. In addition, some new low chromium nickel oxidation are also developed . Heat-Resistance Steel Heat-Resistance Steel ,Heat-Resistant Material Handling Steel,Heat-Resistant Steel Tube,Heat-Resistant Black Round Steel Pipe Jiangsu nickel alloy Co.,Ltd , http://www.xhalloy.com
First, the chimney beautification construction plan:
1. Current overview:
This project is a beautification and anti-corrosion project for the 150m chimney of the power plant and the 100m cooling tower.
The project belongs to high-rise structures with high construction height and difficulty, and the construction process is complex, but our company has a wealth of theoretical and practical experience.
The professional high-altitude construction team that can fight hard, whether it is business management or construction technology, can be competent for the needs of this project.
2. Construction objectives:
2.1. Construction period goal: The construction period is 35 sunny days, and the total amount of work is completed.
2.2. Quality target: The acceptance rate of segmentation acceptance is 100%, the excellent rate is ≥95%, and the engineering sense is ≥90%.
2.3. Cost target: Ensure the quality and safety of the project, and plan to save the engineering cost by 17% through effective management means.
2.4. Safety Objectives: Adhere to the principle of “safety first, prevention first†to ensure that the frequency of general accidents is less than 1.5‰, and the rate of death is zero.
Major safety incidents.
2.5. Civilized Construction Environmental Protection Objectives: Strengthen the scientific management of the construction site, meet the environmental protection requirements, establish a humanistic engineering image, and create a municipal level.
Civilized construction site.
2.6. Progress of Science and Technology Objectives: The project will be listed as a professional science and technology demonstration project of the enterprise, and the efficiency rate of scientific and technological progress will reach 1.5‰.
2.7. Service Objective: Establish the owner to meet the construction process and ensure the quality of the project.
2.8. Under normal circumstances, the perfect rate is 90%, the shelf life is 5 years, the warranty is 5%, and the retention is 3 years.
3. Construction deployment
3.1 Main construction measures:
3.1.1. Use no-foot high-altitude suspension construction.
3.1.2, manual derusting.
3.1.3. Brush with a roller, climb the ladder, protect the net, and have two bottoms on the bottom of the platform.
3.2. Main materials for construction:
3.2.1, paint: enamel (or chlorosulfonated); epoxy zinc-rich; chlorosulfonated polyethylene; thinner.
3.2.2, attached materials: drums, brushes, protective equipment, spare parts, etc.
3.2.3, 18Ñ„ brown rope, wire rope.
4. Main contents of construction:
4.1, construction process tool preparation → manual descaling → first primer → second primer → first finish → second finish → brush the first chimney color ring → brush second
Road chimney color ring → acceptance
4.2. Main contents of construction:
Chimney, cooling tower ladder, net, platform maintenance and anti-corrosion paint; chimney brush color ring 50m.
5. Construction technical measures:
5.1, construction workers construction measures:
5.1.1. Specific construction methods for aerial work:
1. When painting the color ring: the climber is on the hanging plate (the board is fastened to the Ñ„18 brown rope with the board). The Ñ„16 brown rope is attached to the waist as the safety rope.
.
2. When climbing ladders, nets, and platforms, the operators are all double-insurance buckles, and the safety ropes are fixed in places where ladders and platforms are secure.
3, insurance ropes, suspension ropes must be directed inspection; repeated inspections.
5.1.2 Painting and painting specific construction methods:
1. The specific construction method of ladder, net and platform is to remove the rust layer on the surface by manual descaling. The cleanliness requirement is Sa3. The order of surface rust removal treatment is generally first and foremost; first
Next and back.
Anti-corrosion coating construction is mainly carried out by brushing. Pay attention to the construction process:
(1) Pay attention to safety at high altitude.
(2) For the positions of openings, free edges, corners, etc., it is necessary to apply multiple times to ensure that the coating coating thickness meets the design requirements.
(3) Clean up the site after the construction is completed.
(4) Construction should be suspended when the weather temperature suddenly changes. The weather can be re-constructed after the temperature is normal.
2. Concrete construction method for chimney navigation mark:
Chimneys have been in use for some time and have been subjected to varying degrees of corrosion or weathering. There are pollutants such as oil and inorganic salts on the chimney. The substrate to be coated,
The surface must be "cleaned". The surface treatment of concrete is a key step in ensuring proper coating application and coating adhesion;
The main purpose of cleaning is to remove dust from the surface and increase the adhesion between the substrate and the coating during coating.
Construction process: After the surface of the chimney is cleaned, the system coating coating system is also selected, and the coating construction stage can be entered. The color circle is divided into red and white.
A total of 50 meters.
1. Coating preparation: Read the product manual, construction technology, on-site technical manual and other materials before use, and fill the selected coating paint.
Stir well, fully stir and cook until the specified time to start painting.
2. Coating process: The coating structure should be painted according to the structure of the concrete, the performance of the coating system and the customer's requirements. Brushing, roller coating, etc.
Craftsmanship. The next coating should be applied after the last coating is dry; if the temperature is low, the drying time should be extended appropriately, when the hand is pressed without fingerprints.
Carry out the next painting.
4. Construction precautions: The construction of the concrete coating system should pay attention to the following aspects: in order to ensure the quality of the coating, in the case of construction, if it is sand, rain,
The open-air construction of the anti-corrosion layer should be stopped during snow and fog. When the ambient temperature is lower than -10 ° C higher than 40 ° C or the relative humidity is higher than 80%, it is not suitable
work. The paint should be stored in a dry, ventilated, cool place, and it is strictly forbidden to expose to the sun and to the source of fire.
5.2, the duties of the constructor:
5.2.1. Under the guidance of the project manager of Party A, be responsible for the management of the operation section divided by the unit project.
5.2.2. Responsible for the quality inspection, safety and progress of the unit project to each operation group.
5.2.3. Responsible for the preparation of the construction organization design, implementation and supervision of the unit.
5.2.4. Responsible for the management of the labor force and propose the labor demand plan.
5.2.5. Fill in the quality records in the construction process in time.
5.2.6. Participate in safety and quality inspection during the construction phase.
6. Time guarantee measures:
6.1. Set targets according to the actual situation of this anti-corrosion project, implement the division of labor, implement the construction schedule and construction procedures, and arrange scientifically;
Reasonable organization, under the premise of ensuring the quality of the project, improve the operation of the project.
6.2. According to the specific regulations of the project, the construction shall be carried out in order, and the main key processes shall be grasped in the progress of the system construction plan.
Implemented at the level of each layer, and specific to each construction personnel, so that it can be demolition, completed in good quality and quantity, ensure the smooth progress of the project and ensure the overall work
The scheduled schedule ends on 20 sunny days.
8. Engineering quality assurance measures and civilized construction:
8.1. Before the construction, Party A cooperated with the organization of construction personnel to study safely and discuss the program, and detailed the construction procedures.
8.2. Do a good job in technical delivery and construct according to the regulations.
8.3. Self-inspection is adopted during construction; mutual inspection; combination of handover inspection and professional inspection to ensure the quality of the project.
8.4. The quality supervisors of both parties shall follow the procedure of the acceptance inspection method in the whole process, and the quality of the supervision shall be followed.
Construction of the process.
8.5. Strictly control secondary pollution during construction to ensure the construction equipment is clean and tidy.
8.6. Keep the site clean and hygienic, and timely handle the construction waste to ensure the site is cleared.
8.7. Strictly implement other civilized regulations.
Second, security measures:
1. Safety precautions for lifting work at the lifting plate:
In order to implement the national safety regulations and ensure the personal safety of employees and the normal operation of equipment, the special specification system is as follows:
1.1. Hanging work is a male citizen who is over 18 years of age. And after physical examination and safety technical training, you can take the job after passing the test.
industry.
1.2. Operators are strictly forbidden to drink alcohol before work and during lunch breaks. It is strictly forbidden to joke or throw objects at high altitudes and hanging boards.
1.3. Before using the hanging plate, the hanging plate operator shall hang the seat belt completely, otherwise it shall not work on the hanging plate.
1.4. Before using the hanging plate, you must choose a safe and reliable riveting point, and it can be used by a special person to meet the requirements. When operating, the riveting point
A special person must be taken care of.
1.5. A safety mat must be added to the corner of the building to prevent friction and protect the rope.
1.6, the use of frequent large ropes, hanging boards, safety locks, must be checked before the operation, found abnormal (such as broken wire more than 3 or divestiture) should stand
That is to stop using.
1.6. The production parts of the hanging plate, seat belt and safety lock shall not be dismantled at will to prevent unnecessary accidents.
1.8. Hanging plate operators are not allowed to wear cotton coats and gloves. Wind power is not allowed to be lifted on the fourth level.
1.9. Items carried by the work must be tied firmly to prevent falling. During the handling and movement of the big rope, it is strictly forbidden to contact the high temperature and the bright
Fire, strong acid and sharp objects should be placed in a dry and ventilated place and protected from the sun and rain.
2. Responsibility system and discipline requirements of the construction unit:
2.1. After the construction personnel of Party B enter the scene, they strictly abide by the discipline and act according to the relevant rules and regulations of Party A, and do not work with the work.
The matter is to ensure the normal operation of Party A.
2.2. The staff should perform their duties with due diligence, provide quality services to Party A, resolutely perform various tasks, obey the leadership, and strictly follow the work process.
Order and fire standards to do.
2.3 During the construction period, civilized courtesy, establish the company's image, and do not shout loudly in public places, joking and playing. It is strictly forbidden to suck during work
Smoke and drink to ensure the smooth progress of the work.
2.4. Take care of public facilities. It is strictly forbidden to steal and destroy Party A’s public property. If you encounter problems during work, you should immediately report to the relevant leaders.
To protect the interests of Party A.
2.5. The management personnel shall be responsible to the customer, be responsible for the work, actively listen to the opinions of Party A, and promptly convey the relevant instructions of Party A and comply with
Professional ethics, strengthen the safety awareness of employees, and ensure the successful completion of the project.
3. Safety construction measures for construction workers:
3.1. The construction personnel must be certified to work (high-altitude suspension work permit).
3.2. It is strictly forbidden to climb the high wind or thunderstorm when it is above level 4.
3.3. Construction workers shall obey the rules and regulations of each project of Party A.
3.4. High-altitude operations are strictly enforced.
3.5. Suspension operations must be accompanied by double insurance.
3.6. Load test on brown rope and pulley before operation.
3.7. Tools and materials used at high altitude shall be fixed in strict accordance with the regulations during hoisting and use, absolutely ensuring that no fall occurs; the seat belt is pulled around the barrel.
3.8. There is a sign of the restricted area in the construction area; pedestrians are forbidden to pass;
4. Security officer duties:
4.1. Do a good job in on-site safety management and safety education in accordance with the provisions of construction safety regulations.
4.2. Do a good job in on-site safety inspection, and timely rectify the safety hazards, assist in the investigation of the cause of the safety accident, and propose the construction of the accident.
Set up sexual opinions and make a good safety record.
4.3. Do a good job in the protection work of “four ports†and “five borders†on the construction site, participate in the verification of safety technical measures and site safety in the construction plan.
Protection acceptance work.
4.4. Execute the security veto power for the project, and have the right to stop, punish, stop work, rectify or escalate the complaints about the voice command and operation.
4.5. All kinds of machine tools and protective facilities that do not meet the safety standards on the construction site have the right to stop it and refuse to accept the acceptance procedures. 
