Part of the content, such as the following is a template:
Comprehensive wiring construction scheme
Design basis of construction scheme
"ISO/IEC11801"is the international standard of integrated wiring system for commercial buildings.
"EIA/TIA 568A" American Commercial Building Integrated Wiring System Standard
Design and construction standard of "EIA/TIA 569" communication wiring pipeline and space
Code for design of building and building integrated wiring engineering
Code for construction and acceptance of building and building integrated wiring engineering
Iso/iec11801and EIA/TIA-568A are two important standards on which the design of open wiring system is based. It clearly defines the product performance parameters, system design method and terminal fittings installation of open wiring system. EIA/TIA569 is an open wiring system construction standard formulated to meet the above standards. Code for Design of Building and Building Integrated Wiring Engineering and Code for Construction and Acceptance of Building and Building Integrated Wiring Engineering are new standards suitable for China, which were promulgated by China Engineering Construction Standardization Committee in May 1997.
Second, the construction design requirements
In the construction design stage of open wiring system, how to effectively manage and monitor the project quality in the whole process of project construction is considered. We believe that in order to ensure the engineering quality, the construction design of open wiring system should solve the following problems:
1 architectural design: after detailed investigation of the building structure, plan with the users.
Pipeline construction drawing. The rationality of construction design is very important to the engineering quality.
2. Construction process: The technical level of the construction process is directly related to the project quality, and our company will ensure the control of the construction quality by refining each link of the installation operation. We generally divide the whole construction process into three links, namely, pipeline installation, cable installation and pipe fitting termination. This will be explained in detail in the later part of the scheme.
3. Construction management: Our company has formulated detailed project implementation procedures to facilitate project construction management. Construction process control requires two purposes: ensuring process quality and correcting problems in time. This will be explained in detail in the later part of the scheme.
4. Quality control: In previous engineering construction, our company suggested that users and our technicians form a quality supervision team and prepare a quality control log, which should be filled in by the person in charge of the engineering team on duty and signed by the person in charge of the supervision team.
Three pipeline material selection and construction requirements
1 horizontal subsystem
The wiring duct of the horizontal subsystem consists of two parts: one part is the bus slot for placing the horizontal transmission medium on each floor, and the other part is the branch pipe or trunking that leads the transmission medium to the information interface of each room. A transition connection is needed from the bus duct to the branch duct or conduit.
The width-height ratio of bus duct should be 3: 1, and the twisted pair placed in the slot should not exceed three layers. If the density of twisted pair placed in the slot is too high, the transmission performance of twisted pair at the bottom will be affected.
For your comprehensive building, the density of information points on each floor is relatively low. It is suggested that twisted pair for voice system and twisted pair for data transmission be placed in parallel trunking.
Generally, there are many turns in the horizontal trunking, and there should be enough space at the turn to ensure that the twisted pair has enough bending radius. According to EIA/TIA569 standard, the bending radius of five types of 4 pairs of unshielded twisted pair should not be less than 8 times the wire diameter. According to the latest standard, the bending radius is more than 4 times the line diameter, which can meet the transmission requirements. But it is important to keep the bending radius large enough to ensure the transmission performance of the system.
At the corner of the horizontal trough, there should be padding to reduce the friction when pulling the wire.
The trough or conduit of horizontal subsystem shall be galvanized iron trough or iron pipe.
Twisted pair and optical fiber have different requirements for installation. Twisted-pair cables are placed vertically in the shaft. Due to its own weight, the twist of twisted-pair cable will change to some extent after long-term use. This change has little effect on the three types of cables that transmit voice, but this problem can not be ignored for the five types of cables that need to transmit high-speed data. Therefore, when designing trunking in shaft, the fixation of twisted-pair cable should be carefully considered. The stress of twisted pair is a skill that should be paid attention to. If the cable is tied too tightly, the next value may decrease, thus affecting the transmission performance of the cable.
Cable laying and protection mode inspection
In general, 1 cable shall be laid according to the following requirements:
The type and specification of the cable shall comply with the design requirements.
Cable laying shall be natural and straight, and shall not be twisted into loops, squeezed or damaged by external force. Both ends of the cable shall be marked with numbers, and the writing on the label shall be clear and correct. Labels should be made of materials that are not easily damaged. After the cable is terminated, a margin shall be left. The reserved length of twisted-pair cable between handover room and equipment room should be 0.5 1.0m, and the working area should be10 ~ 30mm; Optical cables shall be laid in trays with a reserved length of 3~5m. If there are special requirements, the length should be reserved according to the design requirements.
The bending radius of the cable shall meet the following requirements:
1) The bending radius of unshielded 4-pair twisted pair cable shall be at least 4 times of the cable outer diameter;
2) The bending radius of shielded four pairs of twisted-pair cables should be at least 6~ 10 times of the cable outer diameter;
3) The bending radius of trunk twisted-pair cable should be at least 10 times of the cable outer diameter;
4) The bending semi-continuous diameter of the optical cable shall be at least 15 times of the outer diameter of the optical cable.
The power cord and cable of the integrated wiring system should be laid separately, and the minimum clear distance between cables should meet the design requirements.
After laying cables in concealed pipes or trunking, it is recommended to plug the two port outlets of the channel with filling materials. Cable laying in embedded trunking and concealed pipes shall meet the following requirements:
Both ends of the laying trough shall be marked with signs indicating the quantity and length. Steel pipes or flame-retardant rigid PVC pipes should be used for laying concealed pipes. When laying multi-layer shielded cables, flat cables and a large number of trunk optical cables, the pipe diameter utilization ratio of straight pipes should be 50%~60%, and that of bent pipes should be 40%~50%. When laying 4 pairs of twisted-pair cables or optical cables with less than 4 cores in concealed pipes, the cross-sectional utilization rate of the pipes should be 25%~30%. Metal trunking shall be used for embedded trunking, and the cross-sectional utilization rate of trunking shall not exceed 50%.
Cable trays and trunking for laying cables shall meet the following requirements:
Cable tray and bridge should be more than 2.2m above the ground. Groove and bridge top should not be less than 30mm from the floor; On the lintel or other obstacles, it should not be less than 50 mm Cables should be laid as straight as possible in the groove without crossing. Cables entering and leaving the trunking shall be bound and fixed at the corner, and the horizontal part of the cable may not be bound. Cables laid in vertical trunking shall be fixed on the cable bracket every1.5m. When cables are laid vertically in cable bridge, they shall be fixed on the bridge bracket at the upper end of cables every1.5m. When cables are laid horizontally, they shall be fixed at the head end, tail end, bend and every 5~ 10m. When laying cables in horizontal and vertical bridges and vertical trunking, the cables shall be bundled. Stranded cables, optical cables and other signal cables shall be bundled according to category, quantity, cable diameter and number of cable cores. The binding spacing shall not be greater than 1.5m, and the spacing shall be even and moderately elastic. The optical cable in the building should be laid in the metal trunking, and when the bridge is laid, a cushion cover should be installed at the binding and fixing place. When cables are laid in the ceiling by using the support columns of the ceiling as trunking, the cables within the jurisdiction of each support column need not be laid with trunking, but should be laid in bundles, the cable sheath should be flame retardant, and the cable selection should meet the design requirements.
The technical requirements for the construction of power, optical cable overhead, pipeline, direct burial, wall penetration and underground pipe laying in the subsystem of the building complex shall be implemented in accordance with the relevant provisions of the acceptance of the local network communication line project. Protective measures:
Cable laying protection of horizontal subsystem shall meet the following requirements.
The protection requirements for embedded concealed pipes are as follows:
1) The maximum pipe diameter buried in the middle of the wall shall not exceed 50 mm, and the maximum pipe diameter of the concealed pipe in the floor shall not exceed 25 mm ..
2) A wire box device shall be set every 30m for straight pipeline laying.
3) The turning angle of concealed pipes should be greater than 90 degrees, and the turning angle of each concealed pipe should not be greater than 2 degrees, and there should be no S-bend. When the length of the pipe section with elbow exceeds 20m, a pipeline box device shall be set; When there are two bends, the set length of the box shall not exceed 15m.
4) The radius of curvature of concealed pipe turning should not be less than 6 times of the outside diameter of the pipe. If the outer diameter of the concealed pipe is greater than 50mm, it should not be less than 10 times.
5) The nozzle of the concealed pipe should be smooth and protected by mouth protection, and the protruding part of the nozzle should be 25 ~ 50 mm ..
Network floor cable laying protection requirements are as follows:
1) The trunking shall communicate with each other.
2) The trough cover plate shall be openable.
3) The width of trunk trunking depends on the width of network floor cover, generally about 200mm, and the width of branch trunking should not be less than 70 mm. ..
4) The floor should be compressive, impact-resistant and flame-retardant.
The spacing of fixed points at the bottom of plastic trunking is generally1m. When laying the raised floor and laying cables, the clearance in the raised floor should be 150~300mm. When public columns are used as ceiling support columns, cables can be laid in the columns. Pillar support points should avoid the position of grooves and trunking, and the support should be firm. When the power cord in the column and the integrated wiring cable are laid together, there should be a metal plate in the middle, and the spacing should meet the design requirements. The cable laying protection mode of trunk subsystem shall meet the following requirements:
Cables shall not be laid in elevators or shafts of water supply, steam supply and heating pipelines, nor shall they be laid in high-voltage shafts.
There should be communication between trunk channels.
2 backbone subsystem
The relay subsystem is used for transmission between buildings, and generally uses multiple pairs of twisted pair or multimode optical fiber. Optical fiber has strong anti-interference ability, and there will be no problems such as twisted pair after installation. However, the optical fiber itself is fragile, and strong pulling or bending will cause the core to break, so experienced engineers should be on site when installing.
Optical fiber can be laid overhead, directly buried and in pipelines. According to the actual situation of electric power company, it is suggested to adopt direct burying method, and warning signs should be made at the place where optical fiber passes during direct burying to prevent future construction damage. Because the fiber core of optical fiber is easily broken by timely glass, it is absolutely not allowed to exceed the allowable minimum bending radius during construction. At least 10 times the outer diameter of the optical fiber when it is bundled; When pulling the cable, it should be at least 15 times of the outer diameter of the optical fiber. Secondly, the tensile strength of optical fiber is smaller than that of copper cable, so it must not exceed the tensile strength (46N) during construction. There are two kinds of optical fiber distribution frames: wall-mounted and rack-mounted, which can be divided into 24 ports, 48 ports and 72 ports according to the number of terminated optical fibers. There is an adapter plate on the distribution frame for installing couplers. Optical fibers should be properly bundled before entering the distribution frame, and some spare cables should be reserved after entering the distribution frame for installation and maintenance. The standby cable shall be wound on the reel of the optical fiber distribution frame.
3 Management area subsystem
Management area subsystem is the most complicated part in engineering construction. This part of the construction should fully consider the environmental impact and the impact of the termination process. Electromagnetic radiation is the main factor to consider the installation environment of subsystem in management area. The influence of electromagnetic radiation mainly comes from two aspects, one is the influence of environment on system transmission, and the other is the influence of system on environmental equipment during information transmission. In buildings, the influence of environment on system transmission mainly comes from strong electromagnetic radiation sources, such as radio stations, elevators in buildings, motors, UPS power supplies and so on. If these interference sources have a great impact on the environment, you can consider taking shielding measures or choosing a place far away. The termination process of wiring system is an important factor that directly affects the system performance. It is emphasized in AMP's system performance reference manual that this part of the work should be installed by professional engineers trained by AMP ACT III. The installation process of connecting hardware mainly affects the near-end crosstalk and attenuation of wiring system, and these two parameters are an important basis for judging the performance of the system. In the installation guide of AMP, the distance between twisted pairs is required to be less than 0.5 inch. In the management area subsystem, the ventilation, lighting, pH, humidity and other conditions of the environment should also be considered. These factors will cause corrosion and aging of terminal fittings, which will affect the performance of the system for a long time. The safety of the management area subsystem should also be considered, and the terminal fittings should be installed in the wiring cabinet or wall cabinet.
4 Workspace subsystem
There are many factors to be considered in the construction of workspace subsystem, because different room environments need different information wall seats to cooperate with them. In architectural design, users' demand for indoor layout should be considered as much as possible, and the convenience and safety of connecting application equipment (such as computers, telephones, etc.) should also be considered. ) from the information wall seat. Wall-mounted information wall seats generally consider embedded installation. The standard 86-type wall box is adopted in China, which is square, with specifications of 80×80mm and screw hole spacing of 60 mm ... The distance between the information wall box and the power wall seat should be greater than 750px. Desktop wall seat should be coordinated with furniture and desk, and the safety of installation location should be considered. The distance between the information wall box and the power wall seat should be greater than 750px. The raised floor is installed in the prefabricated AMP floor box, and the information wall seat and power wall seat can be installed in the box. The termination and installation of the information wall connector must be completed by professional engineers trained by AMP ACT III. Like the terminal of the management subsystem, its installation process has a direct impact on the performance of the system. The construction technology requires that the construction process be completed in three steps: pipeline installation, cable installation and pipe fitting termination. Our company divides the personnel into three echelons when implementing the project arrangement, and each echelon is divided into several groups, and each group is composed of corresponding personnel as needed.
1 pipeline installation: completed by the engineering team with the second-class qualification of communication engineering installation in the telecommunications department.
The process quality conforms to the relevant construction specifications of the national telecommunications department and EIA/TIA569 standards. The welding of bridge and the transition connection of trunking meet the technical and safety requirements of high-voltage installation in national electrical standards.
2 Cable installation: The open wiring system requires much higher skills for cable construction than other wiring systems, which is mainly determined by the characteristics of transmission media. In the open wiring system, there are generally two kinds of transmission media, one is twisted pair and the other is optical fiber. Although their material composition and transmission characteristics are different, they all require light pulling and light releasing when pulling wires. Irregular construction operation may lead to transmission performance degradation and even cable damage.
In the construction, you can often see the following situations:
(1) Wrinkling or tearing of the outer cladding of twisted pair is caused by excessive tension, corner of trunking and unqualified transition connection.
(2) The outer coating of twisted pair is smooth, and no problems can be seen. However, it is found that the transmission performance can not meet the requirements when measured by instruments. This is because the tension is too large when pulling the wire, which makes the length of twisted pair elongate and twist straight. When this situation is used for voice and data transmission below 10MBPS, the impact may not be too great, but it is used for high-speed data.
Serious problems will occur during transmission.
(3) There is no optical signal passing through the optical fiber, which is due to improper operation when pulling the cable and serious bending of the cable.
By destroying the fiber core. This situation is common in the bending of optical fiber wiring.
In order to avoid the above problems in construction, ISO/IEC11801standard EIA/TIA569 stipulates:
The tension of twisted-pair cable (especially five twisted-pair cables) should not exceed 13 lb (about 20kg). The tension of the optical fiber should not exceed 5 pounds (about 8 kilograms).
In order to ensure the construction quality, our company stipulates that:
(1) When pulling wires, the length of each wire shall not exceed 20m, and someone must meet the excess; (2) someone must pick up and drop off at the corner of the line;
(3) Each guy team shall be equipped with 7 people.
3 Attachment termination:
The process level of accessory termination will directly affect the performance of wiring system. The company strictly controls, and all termination operations will be completed by professional engineers trained by AMP ACTIII.
4. Technical requirements of construction technology
1) Carry out the construction in strict accordance with the drawings. On the premise of ensuring the functional quality of the system, improve the requirements of process standards and ensure the construction quality.
2) The buried (left) position is accurate and the elements are omitted.
3) The wires at the equipment at both ends of the pipeline shall be sufficiently redundant according to the actual situation. Both ends of the conductor shall be marked according to the line number provided in the drawing, and the terminals shall be connected according to the line color, which shall be marked on the drawing and kept as construction data.
4) The equipment shall be installed firmly, beautifully, pre-installed, vertically arranged, the wall-mounted equipment shall be correct and consistent, the data arrangement shall be formal and complete, and all kinds of site change procedures shall be complete and effective.
Laying of cables (wires)
In weak current systems, most signal models are DC voltage, current or digital signals, so the following points should be paid attention to when laying cables (wires):
1) Cable laying must be directed by a special person. Before laying, all construction personnel shall be disclosed, indicating the number of cables laid, initial and final numbers, process requirements and safety precautions.
2) Before laying the cable, prepare a signboard indicating the serial number, model, specification, drawing number and starting point of the cable.
3) Before laying the cable, check whether all the grooves and pipes have been completed and meet the requirements, whether the routing and the information port to be installed meet the design, and determine whether there are any omissions;
4) Check whether the embedded pipe is unblocked and whether the wires in the pipe are in place. If not, it should be dealt with first;
5) Check the pipeline before setting out, and clean and polish the nozzle of the pipeline before threading. Remove sundries and accumulated water in the pipeline. If possible, use 0.25Mpa compressed air to blow talcum powder to ensure threading quality. All metal trunking covers and guards shall be polished smooth and free of burrs to avoid scratching cables.
6) Check the specifications and models of cables;
7) When threading the pipe, the cable shall be prevented from being excessively stretched, and the pulling force shall not exceed 7kg per meter to protect the twisted distance.
8) When laying the cable, do not put the cable into a dead corner or tie a knot to ensure the good performance of the cable. When laying cables in horizontal trunking, the cables should be straight and avoid crossing as much as possible;
9) Pay-off protection, so as not to damage the protective sleeve and trample the cable;
10) For the area where smallpox is installed, all horizontal cables must be laid before smallpox construction; All cables should not be exposed.
1 1) wiring length: the reserved length (from trunking to ground and back) between the wiring room and the equipment room on the floor is 3-5m for copper cable, 7-9m for optical cable and 0.4m for information socket.
12) When laying cables, both ends shall be marked, and the cable marking shall be clearly expressed. Both ends of the cable must have consistent marks, and the line marks should be clearly readable. When marking the line number, it is required to hold the line head with the left hand and the line tail to the right, so as to confirm the line number in the future.
13) Vertical cable laying: threading shall be carried out from top to bottom. When laying, cables shall be placed in parallel, and shall not be twisted or crossed, bent or knotted.
14) The optical cable should try to avoid being squeezed by heavy objects;
15) Turn binding: Temporary binding should be done during threading to avoid binding after vertical tension, so as to reduce the influence of gravity sag on cable performance. After the trunk line passes through, it should be bound as a whole, and the binding spacing requirements are as follows
16) coaxial cables installed underground must be shielded with aluminum foil to isolate moisture.
17) coaxial cable shall be inspected during installation, and the shielding layer shall not be damaged.
18) When installing cables, pay attention to ensure that the temperature of each cable is higher than 5? C.
19) Fill in the pay-off record: the number given by the main copper cable or optical fiber in the record should indicate the floor number and serial number;
20) After the cable laying is completed, sufficient length must be reserved at both ends, and all bends and straight lines must be sorted and confirmed by the commander to meet the design requirements before being cut off.
2 1) After the wiring in the trunking is laid, the trunking cover plate shall be covered to meet the requirements of fire prevention, moisture prevention and rat prevention.
Wiring in cabinet (box)
1) Install the rack and cabinet according to the design installation drawing, and the installation screws must be tightened;
2) The installation of the rack and cabinet should be aligned with the incoming position; When installing, adjust the level and verticality, and the deviation should not be greater than 3 mm;
3) Install the distribution frame according to the installation drawings and design layout provided by the supplier.
4) Metal bases of racks, cabinets and distribution frames shall be well grounded.
5) Check whether the cable number is correct.
6) Before termination, the cables in the box shall be well bound, neat and beautiful. There should be a moving margin of about 1 m;
7) When the cable sheath is stripped, a special cable opener shall be used, and the edge layer shall not be damaged, and the cable shall not be disconnected;
8) Before termination, a distribution frame termination table shall be prepared, and the cable end shall be connected according to the table;
9) Cables entering the cabinet (box) from the site shall be checked and numbered first.
10) The cables entering the cabinet (box) from the site shall be fixed.
1 1) The cable entering the cabinet (box) from the site should have a certain margin.
12) cables entering the cabinet (box) from the site are generally not allowed to have connectors.
13) Cables entering the cabinet (box) from the site should try to avoid crossing each other.
14) According to the drawings, the wiring is correct, the connection is firm, the contact is good, the wiring is neat and beautiful, and the signs are clear.
15) The cable color of the same signal should be unified as much as possible, which is convenient for installation, debugging and daily maintenance.
16), distinguish the colors of power lines and signal lines.
17) In AC and DC power lines: the red line is the phase line (L) or positive (+); The black line is the zero line (n) or the negative line (-).
18) In DC signal: yellow is the main line (+); Green is opposite to the negative line (-).
19) The blue line is the data line.
20) The yellow-green double-color line is the ground wire. (Note that it is not the zero line of DC and the negative line of DC)
2 1) After the wiring is completed, the power can be sent only after being rechecked and confirmed by a second person, so as to avoid the grounding requirement that the system equipment is damaged due to wiring errors.
1) bridge grounding mode, the application is not less than 2.5mm? The copper-plastic wire is grounded to the main reinforcement.
2) The grounding resistance of each cabinet and chassis shall not be greater than 1 ohm.
3) There are two independent grounding methods for equipment in the computer room, public grounding and working grounding. Working grounding resistance is not more than 4 ohms, and ordinary grounding resistance is not more than 1 ohm.
Five construction management and control
Construction management needs two purposes: 1. Control the whole construction process to ensure that all processes are orderly and coordinated with each other; 2. Closely grasp the daily progress and quality of the project, and correct the problems in time when found.
In order to achieve the above objectives, our company has formulated a set of total quality management measures, which are summarized as follows:
1. Implement the responsibility system of construction responsible person. The chief engineer and professional technicians of users are responsible for the supervision, and the quality control team is composed of the heads of pipelines, stay wires and terminal echelon, and is responsible for the progress and quality of the project.
2. Sign in and out. Every construction team member must sign the attendance sheet and record the time, and leaving halfway is no exception.
3. Fill in the construction log. Every day, the team leader of each construction team should truthfully fill in the daily construction progress on the log sheet, and the person in charge of the echelon should fill in the quality inspection.
4. After the completion of each working procedure on each floor, the chief engineer of our company and the person in charge of the employing unit shall conduct inspection, and fill in the construction process quality inspection form, which shall be signed by the inspection heads of both parties.
Through strict management, our company can achieve reliable engineering quality, perfect terminal fitting technology and unified line layout.
Technical organization measures and quality management standards to ensure engineering construction quality
Establish and improve the quality system according to ISO900 1 quality standard to ensure that the engineering installation quality meets the design requirements; And formulate quality measures in the process of design, development, production, installation and service to ensure that the quality of engineering projects and products meets the requirements stipulated in the contract. This quality system will be applicable to the whole process of project implementation.
Our quality policy is: the satisfaction and benefit of users and society to the company's character and products (projects) is our eternal purpose.
Our quality goal is: first-class talents, first-class technology, first-class products, first-class engineering, first-class service and first-class management, so that the risk of users can be reduced to zero. Our commitment is: a century-long plan, quality first, close cooperation, mutual cooperation, careful construction, careful group.
Weave, do projects, erect monuments. In quality management, we will strictly implement the ISO900 1 system engineering quality system, and earnestly grasp the following links in the whole construction process:
1) Construction drawing standardization and drawing quality standard
2) Quality inspection and supervision of pipeline construction
3) Review wiring specifications and quality requirements.
4) Quality inspection and supervision of wiring construction
5) Quality inspection and supervision of field equipment or front-end equipment
6) Quality inspection and supervision of main control equipment
7) Fill in and check the monitoring parameter setting table of weak current system, such as DDC monitoring parameter setting table of building automation system.
8) Review and implementation of debugging outline and quality supervision
9) Parameter statistics and quality analysis during system operation.
10) Steps and methods of system acceptance.
1 1) system acceptance quality standard.
12) The system runs according to the standard requirements of operation management.
13) specifications and requirements for system maintenance and repair.
14) annual inspection records and system operation summary, etc.
Methods of implementing and controlling quality activities
(1) After the equipment and materials enter the site, the management company, the supervision unit and the management personnel of our company shall review the model, quality and quantity of the equipment entering the site according to the contract, and make a written pliers. Products that do not meet the requirements of the contract shall not enter the site, and the written materials shall be submitted to the owner, who has the right to approve or disapprove within the time stipulated in the contract and give a written reply.
(2) Before the concealed works are covered, the owner, management company and supervision unit shall be notified 48 hours in advance for intermediate acceptance to ensure the quality of concealed works. Archive the acceptance records and hand them over to the owner after completion.
(3) Improve the project management system and clarify the division of responsibilities. The project manager will be fully responsible for this project. In strict accordance with the drawings, on the premise of ensuring the functional quality of the system, improve the requirements of process standards and ensure the construction quality.
(4) Establish and improve the quality inspection system, and the on-site management personnel will conduct quality inspection regularly and run through the whole construction process.
(5) Each subdivisional work shall be carried out in strict accordance with the operation procedures, and each subcontractor shall take full responsibility for the project undertaken by himself.
(6) During the construction process, the project manager and the heads of each team conduct irregular inspections every day, and verbally communicate the quality problems found on the spot. The next day, if the same problem is not solved again, it will be solved by oral communication within a time limit; If it cannot be solved, a written notice will be given and the bonus will be deducted, and the amount of deduction will be decided by the project manager at his discretion.
(7) Written documents of engineering problems put forward by the owner, supervision company and management company shall be reported immediately after verification and rectification.
(8) The data during project commissioning shall be properly kept and provided to the owner when the project is completed, so that the owner can be familiar with and maintain each system as soon as possible after the project is delivered.
(9) Acceptance of system operation: After the equipment installation and debugging are correct, our company will send on-site debugging personnel to debug the system and submit a debugging report to the owner. Our company believes that after all the undertaken projects are completed, it will notify the owner in writing to carry out the system operation acceptance. The owner may, according to the design and technical requirements stipulated in the contract, conduct the acceptance together with subjective departments or experts and go through the acceptance procedures.
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