First, the preparation instructions
1. Comprehensive explanation
Due to years of disrepair, cracks and peeling and falling off occur in many places in chimney coatings. In this case, through the on-site investigation of our company's technical personnel, the following proposals were proposed.
2. Basis for preparation
(1). The specific situation known at the survey site.
(2). "Building Law of the People's Republic of China", "Building Decoration Industry Standards" and other relevant laws and regulations.
(3). National current construction and decoration engineering construction and acceptance specifications.
(4). Our company's corporate standards and quality assurance system.
(5). My company's existing construction strength and technical equipment.
(6). Our company cooperates with technical strength and industry resources, professional manufacturers and material suppliers.
(7). Our company has summarized the experience in other similar projects.
(8). Other references.
3. Construction process specifications and technical standards
(1) “Code for Quality Acceptance of Building Decoration Engineering†(GB50210-2001).
(2) "Code for Fire Protection Design of Exterior Exterior Decoration" (GB50222-95).
(3) "Safety Technical Specifications for Construction Work at High Heights" (JGJ80-91).
(4) "Technical Specifications for Temporary Electricity Use at Construction Sites" (JGJ46-88).
(5) Construction Process Regulations for Sub-projects of Building Installation (Second Volume) (GBJ01-26-96)
(6) The company's documents on construction, construction quality, safety production, and technical management.
(7) The technical specifications documents provided by the construction unit.
(8) The construction period and quality modification requirements proposed by the construction unit for the project.
Second, construction preparation
1. Construction team composition
The engineering team is composed of a project manager, a construction team leader, a security officer and a number of workers.
2. Construction personnel qualification
All technicians hold valid certificates issued by relevant departments. All climbers shall be employed by the special occupational operation certificate issued by the People's Republic of China, and all undocumented personnel shall not enter the construction site.
3, mechanical equipment
Polishing machine, wire brush, brown rope, pulley walkie-talkie, seat belt and other special tools.
Third, the construction method
(1) Process
eradicate
Chimney surface
Lifting and peeling parts
→Clean up
Grassroots
→
Primer
→
Middle coat
→
Top coat
→ Completion acceptance.
(two) operational points
1. The project uses no scaffolding suspension operation for construction. During construction, the construction personnel adopts three insurance system, that is, the brown rope with diameter 18 is used as the hanging main rope, and the brown rope with diameter 16 is used as the insurance rope, combined with its own insurance belt. The root suspension main ropes are equipped with anti-emergency fall devices to ensure construction safety.
2. Remove the surface of the chimney, peel off the parts, and clean the base:
1
)
Use a wire brush, a shovel blade, etc. to clean the surface of the chimney, such as dust and shell paint.
2
)
Clean the surface with a brown brush or substitute gauze to ensure a clean base on the surface of the chimney.
3
)
Use a wire brush, iron sand cloth, blade to remove the rust layer on the surface of the ladder, net, and platform steel structural parts. The rusted parts on the surface of the platform structural parts should also be carefully inspected to prevent the presence of empty shells and eliminate them. , then derusting.
4
)
Steel shovel is used to remove the rust layer in every corner of the steel structure.
5
)
After the rust is removed, use a brown brush or a cloth wipe to remove the surface rust powder.
6
)
After the surface derusting is completed, apply for the acceptance of the construction unit and immediately apply the primer to prevent secondary pollution.
3,
Coating construction
1
)
After the base surface treatment is finished, the primer should be applied immediately to prevent secondary pollution or secondary rust and increase the engineering workload.
2)
The steel structure coating should be painted after the primer is applied and dried.
3)
The coating should be uniform and beautiful, so that it does not hang up, does not leak, does not paint, and has no pinholes.
4)
The thickness of the coating, the surface of the concrete is not less than 160um, and the surface of the steel structure is not less than 180um.
5)
Construction is carried out in strict accordance with product specifications and industry specifications.
6)
Strictly according to the product requirements, the mixture should be evenly mixed before use.
7)
The base layer has a water content of not more than 5% for coating construction.
8)
Stop construction in the rainy, windy, and foggy weather, and wait until the weather is fine before proceeding with construction.
9)
Check the entire lightning protection system, the upper lightning rod and the lightning protection net.
10)
Detect the grounding resistance and its grounding resistance is no more than 10 ohms.
four
,construction
Precautions
1. This project uses no-foot suspension method for construction.
2. The Φ nylon rope is fastened to the upper platform, and the construction personnel ride on the seated climbing board. The nylon rope is slid by the safety lock and the construction is carried out downward.
3. In addition to the construction rope, add a safety safety rope to increase the safety factor.
4. Before the coating work, the paint and the upper platform material are lifted to the upper platform, and the rope is placed at the construction site during construction to reduce the running time.
5. Construction nylon ropes and safety safety ropes should be carefully inspected before use to prevent breakage and corrosion, and problems should be replaced immediately.
6. Apply the impact test before the construction of the nylon rope and safety safety rope.
7. Platform construction uses the hoisting system to the lower part of the platform for construction. The upper part can be directly rusted and preserved.
8. Construction of ladders and nets, construction workers can use ladders directly for construction, but safety belts must be fastened during construction.
V. Construction organization management
1. With the project manager as the first responsible person, establish a quality and safety management organization system, and establish a guiding ideology of quality first and safety first.
2. Construction management organization chart
3. Implement a system of point-and-point control assessment. The overall schedule is used to command all aspects and aspects of the process. Construction class
The construction plan prepared by the project department should promptly feedback the progress of the project to facilitate unified command and unified arrangement.
4. Construction technology is the prerequisite for ensuring the quality of the project. Under the guidance of the construction plan, it provides technical and safety assurance measures to strengthen the quality and safety awareness of all employees. Strictly follow the construction specifications, implement the operating procedures, and guide the construction according to the relevant construction technology and technical plan. Prepare scientific construction procedures to stratify flow operations, rationally cross-construct construction safety, and achieve the goal of shortening the construction period.
5. Relying on the company's strong construction technology and construction experience, we will mobilize the elites and conscientiously do all the preparatory work, and we will be able to complete the construction tasks of the project with quality and quantity.
Sixth, safety construction code
It adopts the method of no scaffolding and non-stop production, implements strict supervision and inspection, solves existing safety problems in time, and eliminates hidden dangers.
2. The construction personnel must enter the market, and the technical work must hold the special operation operation certificate issued by the relevant unit of the People's Republic of China. Ordinary types of work must hold a certificate of employment.
3. The construction team must be equipped with a project manager, technician, quality inspector, and safety officer. The safety officer is responsible for the full-time coordination and coordination of related matters. The contractor and the contractor jointly inspect the relevant safety work in the project to prevent the occurrence of the accident.
4. Before the construction of the contractor, the contractor's supervision department will be invited to introduce the safety operation norms and discipline system of your unit. The contractor must strictly abide by it. The construction personnel must not enter the workshop department that the contractor has nothing to do with the construction task. The Employer shall also educate the employees of the Factory not to enter the dangerous working area of ​​the Contractor to prevent accidents.
5. The contractor shall provide all the working conditions that are convenient for construction, and the personnel entering the site must wear a helmet. Personnel who climb the work must wear a seat belt and hang it in a secure location. The seat belt must be inspected and used. High-altitude workers must bundle the cuffs and trousers, and do not wear hard-soled shoes to enter the site.
6. Safety warning signs must be placed around the site before the operation, and guardianship should be sent.
7. When climbing the work, the upper and lower transfer tools must be fixed with a rope to prevent the high-altitude objects from falling.
8. When encountering high winds or thunderstorms of level 5 or above, all high-altitude operations must be stopped. The operator should quickly go down to the ground and cut off the power.
9. When working, there should be measures to prevent damage caused by oxygen and gas, so as to avoid unnecessary injury to the operator.
Seven,
Aerial work
Protective measures
1), do not wear labor insurance products are not allowed to enter the construction site.
2) Those who are not qualified for professional operation are not allowed to construct.
3), construction is not allowed without wearing an insurance belt.
4) No construction is allowed without protection measures.
5) No safety supervision on the ground is allowed to be constructed.
6), the wind above the sixth level is not allowed to be constructed.
7) Construction is not allowed in bad weather such as rain.
8) Personnel with health problems are not allowed to work.
9), construction is not allowed after drinking.
10), the violation of the command is not allowed to work.
Eight, quality assurance measures
1. Strengthen the quality management leading group headed by the project manager.
2. The quality inspector conducts follow-up guidance throughout the process and records it.
3, raw materials must enter the site must have the site, factory name, product certification and quality assurance.
4. Targeting high-quality projects and implementing a reward and punishment system.
5. Hold regular and irregular quality inspections, and report problems to the project department in time to formulate rectification plans.
6. After the completion of the previous process, after applying for inspection by the construction unit, proceed to the construction of the next process.
