First, the general supervision countermeasures
Carefully review the construction qualifications, management, technical personnel and special types of personnel of the installation team, equipment permits;Carefully review the construction organization design and the special construction plan to ensure that the organization, technical strength and construction measures of the construction unit can meet the requirements of the project.
Strict acceptance of incoming equipment and materials. All equipment and materials used for the project, regardless of the supply channel, should be strictly controlled by the quality, adhere to the self-inspection by the construction party, the "three certificates" information is complete, and report to the supervision for review. Cables, valves, various pipes, outdoor fire hydrants, water pump adapters, etc., must be tested or tested according to the specified ratio, and can only be used after passing the test. Unqualified equipment and materials will be cleared out of the site within a time limit.
Strict process acceptance. It is necessary to emphasize the reliable operation of the quality management system, technical assurance system and quality assurance system of the construction unit itself. On the basis of self-inspection and mutual inspection, it shall be submitted to the supervision for acceptance. At the same time, the supervisor conducts parallel inspections to ensure that the quality of each process is within the strict control range. For concealed projects, it is necessary to conscientiously do a good job of concealed acceptance records.
Conscientiously do a good job in the coordination between various professional types of work, and do a good job in the coordination of installation and civil engineering. Due to the intricacy of various landscape lighting, roadside sketches, and large-area water supply and drainage pipes in the square, poor handling will not only affect the use function, but also hinder the appearance. Therefore, for the specific pipeline layout, direction, and hole location size, in addition to digesting the drawings, it is necessary to solve it based on on-site research, involving the signing of technical approval orders, and handle it in a timely manner, so as not to let complex and cumbersome on-site problems affect the quality and progress of the entire project.
Strengthen the organization and technical management within the supervision department. Supervisors should thoroughly understand the design drawings and documents, and ask the design department to take measures in time when problems are found. The technical problems and construction problems raised by the construction unit can be solved in a timely manner. The supervision department has formed an internal meeting and communication system, emphasizing pre-control and active supervision. For the construction organization design and plan, it is necessary to be able to put forward practical guidance.
2. Supervision of water supply and drainage system
1. There are many and complex drainage pipes for outdoor projectsThere is also a lot of water supply for watering and cleaning in green spaces, and drainage and rainwater pipes are staggered and complex. In this case, the supervisor will strictly review the water supply and drainage drawings and on-site conditions, focusing on whether the layout, direction and slope of the drainage ditch, inspection well and valve well are reasonable, whether the water supply point is missing, and whether it can meet the needs of normal use.
2. Strictly control the positioning and size of buried holes and pipelines to ensure the accuracy of buried holes and pipelines. Buried holes and embedded pipelines must be closely coordinated with civil construction, and the positioning axis, elevation, size and pipe fitting specifications should be checked by using a level and a tape measure to ensure that they are correct.
3. Strictly control the acceptance of incoming pipes and equipment. On the premise of verifying its warranty information, check its manufacturer and model according to the contract, and check whether its model, geometric size, material, etc. meet the requirements of design and specifications. Imported materials also need to check whether they have customs documents, commodity inspection certificates and certificates of origin and other relevant information, and it is strictly forbidden to use unqualified materials.
4. Strictly control the re-inspection of special materials. According to the requirements of the specification, the materials that need to be re-inspected are strictly in accordance with the requirements of the specification for witness sampling for re-inspection, such as UPVC pipelinesAt the same time, valves and pipe fittings need to be tested for strength and tightness according to the ratio specified in the specification before installation, and can only be installed after passing to avoid rework caused by unqualified valves after installation.
5. Strictly control the process acceptance. The supervision will strictly control the process acceptance according to the construction process of the water supply and drainage system, and it is strictly forbidden to carry out the construction of the next process if the previous process is unqualified, and for the concealed project, make a good record of the concealed acceptance. For example, the concealed water supply pipe must pass the pressure test, the drainage pipe must pass the irrigation and ball test, and carry out anti-corrosion or insulation according to the design requirements, and make a concealed acceptance record before it can be concealed.
6. Do a good job in the cooperation and coordination of all parties. Coordinate the cooperation between installation and civil engineering work, strengthen the protection of semi-finished products and finished products during the cross construction of different types of work, and the sealing protection of the nozzle when the construction is not carried out for a long time, so as to avoid pipeline blockage and equipment pollution damage caused by improper construction.
7. Do a good job in system debugging and other professional debugging work. Do a good job in pressure testing and flushing of the water supply pipeline system;Do a good job of drainage, rainwater system through the ball, water test;Do a good job in the single debugging and linkage debugging of pumps and other equipment.
8. Do a good job in environmental protection. According to the specifications and design requirements, the construction acceptance of the vibration reduction base and drainage pipeline of the pump unit is strictly controlled to meet the environmental protection requirements of the design for noise, sewage and wastewater control.
3. Electrical engineering
The electrical engineering of outdoor engineering should be people-oriented, reflect the harmony between people and electricity, and create a good human environment. The characteristics of electrical engineering in outdoor engineering are reflected in road and landscape lighting (street lights, garden lights, colored lights, flood lighting, etc.). Because the lamps and lanterns are installed outdoors, they need to bear all kinds of adverse climate influences, and it is easy to make the lamps suffer mechanical damage and insulation decline, resulting in accidents, so the use of reasonable grounding system and grounding fault protection should become the focus of engineering technology. The electrical subsystem of this project mainly consists of a substation and distribution system and a lighting system. In the supervision work, the following will be controlled:
1. Key points of cable laying quality control.
Pay attention to the acceptance of incoming materials, the withstand voltage test results of cables, leakage current and insulation resistance must meet the requirements of the specification, and the appearance is strictly forbidden to have defects such as twisting, armor flattening, sheath fracture and scratching.
The production and installation of the cable terminal and the cable intermediate joint must meet the requirements of the specification, so that the closure is tight, the filler is full, there is no bubble, and there is no oil seepageThe semiconductor tape and shielding tape of the cross-linked polyethylene cable head are wrapped without exceeding the maximum in the middle of the stress cone, and the cone slope is uniform and the surface is smooth.
The cable laying adaptation is arranged according to the design and the site, the position of the intermediate joint should be reasonable, and the cable arrangement order of different voltage levels on the same bracket should meet the requirements of the specification.
2. Key points of quality control of power lighting system.
Conscientiously do a good job in the acceptance of the power lighting distribution box, and put an end to unqualified circuit breakers and other switchgear and wires and cables from entering the site.
The selection of lighting sources and lamps should conform to the environmental conditions of the place of use, and consider the influence of environmental factors on photoelectric parameters. On the premise of meeting the requirements of visual operation, energy-saving light sources and high-efficiency lamps are preferred.
The material and construction of the luminaire shall comply with technical safety standards.
The high-temperature part of the lighting fixture, when close to non-A-grade decoration materials, should take fire protection measures such as heat insulation and heat dissipation. The combustion characteristics of the materials used in lighting should not be lower than B1.
The leakage protector should meet the requirements of the manufacturer's product manual, and have the national certification mark, the electrical parameters of the leakage protector should meet the requirements of the protected power supply line and electrical equipment, and the installation and wiring should be correct.
When three-phase power distribution is used for outdoor lighting, three-phase load balance should be maintained in different lighting control schemes, and remote control should be carried out in the duty room or substation room. Outdoor metal light poles, the metal part of the lawn light should be reliably grounded.
The interface processing between strong current parts such as lighting and power and weak current is related to whether the weak current automation function can be finally realized. Therefore, when ordering various strong current boxes, it is necessary to fully listen to the opinions of all relevant units, coordinate the relationship between all aspects, and ensure that the strong and weak current are integrated.