and other parts of the content, the following is a model:
Comprehensive cabling construction program
A construction program design basis
"ISO/IEC 11801" International Standard for Integrated Wiring Systems for Commercial Buildings
"EIA/TIA 568A" American Standard for Integrated Wiring Systems for Commercial Buildings
"EIA/TIA 569" Standard for Design and Construction of Communication Wiring Pipes and Spaces
"Design Code for Comprehensive Wiring Engineering for Buildings and Building Complexes"
"Construction and Acceptance Code for Comprehensive Wiring Engineering for Buildings and Building Complexes"
ISO ISO/IEC11801 and EIA/TIA-568A are two important standards for the design of open wiring systems. It is the open wiring system product performance parameters, system design and installation of termination accessories are clearly defined.EIA/TIA569 is in order to cooperate with the above standards for open wiring system construction standards. Building and complex integrated wiring engineering design specifications", "building and complex integrated wiring engineering construction and acceptance specifications" is China's engineering construction standardization committee in May 1997 promulgated a new standard suitable for China's national conditions.
Two construction design requirements
In the open wiring system construction design stage to consider how the whole process of construction of engineering quality to make effective management and monitoring of the problem. We believe that in order to ensure the quality of the project, open wiring system construction design should address the following aspects:
1 construction design: after a detailed survey of the building structure, together with the user to plan
out of the pipeline construction plans. The rationality of the construction design is critical to the quality of the project.
2 construction process: the construction process of the level of craftsmanship and the quality of the project has a direct relationship with the company will be through the refinement of the installation operation of the various links to ensure that the quality of construction control. We generally divide the entire construction process into three parts, namely, pipeline installation, cable installation and fittings end connection. The later part of the program will also be explained in detail.
3 construction management: our company for the implementation of the project to develop a detailed process, in order to facilitate the management of construction. Construction process control requirements to achieve two purposes: to ensure the quality of workmanship and timely correction of problems. The later part of the program will also explain in detail.
4 quality control: my company in the past project construction is recommended by the user and my company's technical staff to form a quality supervision team, and the preparation of a quality control logbook, filled out by the engineering team leader on duty, the supervision team leader to sign.
Three piping material selection and construction requirements
1 Horizontal subsystem
Horizontal subsystem alignment piping consists of two parts: one part is the busway for placing the horizontal transmission medium on each floor, and the other part is the sub-wire duct or wire trough that leads the transmission medium to the information interface in each room. A transition connection is required from the busway to the sub-slot or wire duct.
The busway requires a 3:1 ratio of width to height, and no more than three layers of twisted-pair wires should be placed in the busway. The density of twisted-pair wires placed in the trunk can affect the transmission performance of the underlying twisted-pair wires.
For your complex building, the density of information points in each floor is relatively low it is recommended that the twisted pair for voice systems and twisted pair for data transmission in a side-by-side trunking.
Horizontal trunking generally has multiple turns, where there should be a large enough space to ensure that the twisted-pair cable has an adequate bending radius. According to the EIA/TIA569 standard, Category 5 4-pair unshielded twisted-pair cables should have a bend radius of not less than 8 times the wire diameter. The latest standard that the bending radius is greater than 4 times the wire diameter can already meet the transmission requirements. However, it is important to maintain a large enough bend radius to ensure the transmission performance of the system.
In the horizontal trunking turns, there should be padding to reduce the friction when pulling the wire.
Horizontal subsystem trunking or conduit should be galvanized iron trunking or iron pipe.
Twisted-pair cable and fiber optic installation has different requirements, twisted-pair cable placed vertically in the shaft, due to their own weight pulling, after a long time will make the twisted-pair cable stranding to a certain degree of change, this change in the transmission of voice of the three types of wire is not too great an impact, but for the need to transmit high-speed data Category 5 line, this problem can not be ignored, so the design of vertical shaft in the trough should be carefully considered. Therefore, careful consideration should be given to the fixing of twisted-pair cables when designing the trunking in vertical shafts. The amount of force used to secure the twisted pair is a technique that should be emphasized, as tying the cable too tightly may reduce the NEXT value, thus affecting the cable's transmission performance.
Cable laying and protection mode test
1 cable should generally be laid according to the following requirements:
Cable type, specifications should be consistent with the design provisions.
The cable should be laid naturally straight, shall not produce twisting, circling joints and other phenomena, should not be subjected to external forces of extrusion and damage. Cable ends should be labeled, should be marked with a number, label writing should be clear, correct and correct. Labeling should be selected from materials that are not easily damaged. After the final connection of the cable, there should be a margin. Between the handover, the equipment between the stranded cable retention length should be 0.51.0m, the work area is 10 ~ 30mm; fiber optic cable deployment should be kept on the disk, the retention length should be 3 ~ 5m, there are special requirements should be according to the design requirements of the length of the retention.
The bending radius of the cable should be in accordance with the following provisions:
1) unshielded 4 pairs of stranded cable bending radius should be at least 4 times the outer diameter of the cable;
2) shielded 4 pairs of stranded cable bending radius should be at least 6-10 times the outer diameter of the cable;
3) the bending radius of the trunk stranded cable should be at least 10 times the outer diameter of the cable;
3) the bending radius of the main trunk stranded cable should be at least 10 times; < /p>
4) fiber optic cable bending half-work half-continuous diameter should be at least 15 times the outer diameter of the fiber optic cable.
Power lines, integrated wiring system cables should be separated and placed, the minimum clearance between the cables should be consistent with the design requirements.
In the dark tube or cable groove in the cable laying is completed, it is appropriate to seal the channel at both ends of the mouth of the exit with filler material. Embedded cable and concealed pipe laying cable should comply with the following provisions:
The laying of the cable groove at both ends should be marked with a sign indicating the number and length of the content. Concealed pipe laying should be used steel pipe or flame retardant rigid PVC pipe. When laying multi-layer shielded cables, flat cables and large pairs of trunk fiber optic cables, straight pipe diameter utilization rate of 50% to 60%, the curved pipe should be 40% to 50%. Concealed pipe laying 4 pairs of stranded cable or 4 cores of the following fiber optic cable, pipe cross-section utilization rate should be 25% ~ 30%. Pre-embedded trunking should be metal trunking, trunking cross-section utilization should not exceed 50%.
Set up the cable tray and cable trunking cable should be in accordance with the following provisions:
Cable trunking, bridges should be 2.2m above the ground. The top of the trunking and bridges from the floor should not be less than 30mm; in the beam or other obstacles, should not be less than 50 mm. Trough cable placement should be straight, as far as possible, do not cross, in the cable in and out of the trunking parts, turns should be tied to fix the horizontal portion of the cable can be not tied. Vertical groove cable deployment should be fixed at intervals of 1.5m on the cable bracket. Cable bridge cable vertical laying, in the upper end of the cable and every interval of 1.5m should be fixed in the bracket of the bridge; horizontal laying, in the cable of the first, last, turn and every interval of 5 ~ 10m at the fixed. When laying cables in horizontal and vertical bridges and vertical trunking, the cables should be tied. Stranded cables, fiber optic cables and other signal cables should be based on the type of cable, the number of cables, cable diameter, the number of cores of cable bundling. Tying spacing should not be greater than 1.5m, the spacing should be uniform, loose and tight. Fiber optic cables in the building should be laid in the metal trunking, in the bridge laying should be tied in the fixed section of the installed cushion sleeve. The use of ceiling support columns as a cable duct in the ceiling cable laying, each support column within the jurisdiction of the cable can not set up the cable duct for the deployment, but should be tied in bundles, cable sheath should be flame-retardant, cable selection should be in line with the design requirements.
The construction technical requirements for the subsystems of the building complex using overhead, pipeline, direct burial, wall and concealed pipe laying of electric and optical fiber cables shall be implemented in accordance with the relevant provisions of the acceptance of the local network communication line project. Protection measures:
Horizontal subsystem cable laying protection should meet the following requirements.
Pre-embedded concealed pipe protection requirements are as follows:
1) The maximum diameter of the pipe pre-embedded in the middle of the wall should not be more than 50 mm, and the maximum diameter of the concealed pipe in the floor should not be more than 25 mm.
2) Straight line laying should be set up at every 30m with an over-wire box device.
3) The turning angle of the concealed pipe should be more than 90 degrees, and the turning angle of each concealed pipe in the path should not be more than 2, and there should be no S-bend, and when the length of the pipe section with elbow is more than 20m, the pipeline should be set up with a wire box device; and when there are 2 bends, no more than 15m should be set up with a wire box.
4) the radius of curvature of the dark pipe turn should not be less than 6 times the outer diameter of the pipe, such as the dark pipe outer diameter is greater than 50mm, should not be less than 10 times.
5) the dark pipe should be smooth, and add a mouth guard to protect the mouth of the pipe out of the part of the appropriate 25 ~ 50mm.
Network floor cable laying protection requirements are as follows:
1) the cable groove should be communicated with each other.
2) The cover of the cable channel should be open.
3) The width of the main cable slot by the network floor cover width, generally appropriate in about 200mm, the width of the branch cable slot width should not be less than 70mm.
4) The floor should be resistant to pressure, impact resistance and flame retardant.
Plastic wire trough groove bottom fixing point spacing is generally suitable for 1m laying movable floor cable laying, movable floor within the headroom should be 150 ~ 300mm. the use of public columns as a roof support columns, can be in the columns in the deployment of cable. The column support point should avoid the trench and cable slot location, support should be firm. Columns in the power line and integrated wiring cable deployment, there should be a metal plate in the middle of the separation, the spacing should be in line with the design requirements. Trunk subsystem cable laying and protection should meet the following requirements:
The cable shall not be placed in the elevator or water supply, steam, ambient pipeline shaft, should not be placed in the strong electricity shaft.
The trunking channels should communicate with each other.
2 backbone subsystem
The backbone subsystem is used for transmission between the building, generally using multi-pair twisted pair or multi-mode fiber, fiber optic has a strong anti-interference ability, so the installation will not occur as twisted pair of the same problem, but the optical fiber itself is more fragile, strong pull or bend will make the fiber core fracture, so the installation of the site should be experienced engineers to point the way.
Fiber optic erection can be used overhead, direct burial, pipeline and other methods, according to the actual situation of the power company, it is recommended to use the method of direct burial, direct burial should be done in the fiber optic through the place of the warning signs, in order to prevent the destruction of the construction in the future. As the core of the optical fiber is quartz glass is very easy to break, so the construction is absolutely not allowed to exceed the minimum allowable bending radius. Bundle at least 10 times the outer diameter of the fiber; pulling at least 15 times the outer diameter of the fiber. Secondly, the tensile strength of optical fiber is smaller than that of copper cable, so in construction, never allow more than the tensile strength (46N), fiber optic distribution frame wall-mounted, rack-mounted two kinds of fiber according to the number of terminated fibers can be divided into 24-port, 48-port, 72-port several kinds of distribution frames on the adaptor plate, used to install couplers. Fiber optic into the distribution frame should be properly bundled before entering the distribution frame should be reserved after a certain amount of spare cable to facilitate installation and maintenance. The spare cable should be coiled on the spool of the fiber optic distribution frame.
3 management area subsystem
The management area subsystem is the most complex part of the project construction considerations. 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 management area subsystem installation environment. The influence of electromagnetic radiation mainly comes from two aspects, one is the influence of the environment on the system transmission, and the other is the influence of the system on the environmental equipment in the process of information transmission. Inside the building, the influence of the environment on the system transmission mainly comes from strong electromagnetic radiation sources, such as radio stations, elevators in the building, motors, UPS power supplies, and so on. If the environment of these interference sources have a greater impact, due to consider taking shielding measures, or choose a location farther away. The termination process of the cabling system is an important factor that directly affects the performance of the system. AMP's System Performance Reference Manual emphasizes that this part of the work should be installed by professional engineers trained in AMP ACT III. The installation process of connecting fittings mainly affects the near-end crosstalk and attenuation of the cabling system, and these two parameters are an important basis for judging the performance of the system. AMP's installation guidelines require twisted-pair cable to be unraveled to less than 0.5 inches. In the management zone subsystem, environmental conditions such as ventilation, lighting, pH, and humidity should also be considered, as these factors will cause corrosion and deterioration of the termination fittings, which will affect the performance of the system over time. Management subsystem should also be considered within the security, termination accessories are best installed in the wiring closet or wall cabinet.
4 workspace subsystem
Workspace subsystem in the construction of more factors to be considered, because different room environments require different information wall mounts with it. In the construction design, should be considered as far as possible, the user's need for indoor layout, but also to consider the information from the wall mount to connect the application equipment (such as computers, telephones, etc.) convenient and safe. Wall-mounted information wall mount is generally considered embedded installation. In the domestic use of the standard 86-type wall box, the wall box for the square, specifications 80 X 80mm, screw hole spacing 60 mm. information wall box and power wall bracket spacing should be greater than 750px. desktop wall bracket should be considered and furniture, desk coordination, while taking into account the safety of the installation location. The distance between the information wall box and the power wall mount should be more than 750 px. The raised floor is installed in the pre-fabricated AMP floor box, which can be installed with the information wall mount and the power wall mount. Termination installation of the information wall holder connector must be done by a professional engineer trained in AMP ACT III. As with the termination of the management zone subsystem, its installation process has a direct impact on the performance of the system. The construction process requires that the construction process be accomplished in three ways: pipe installation, tie-in installation and fitting termination. My company in the implementation of engineering arrangements for the operation will be divided into three echelons of personnel, each echelon is divided into several groups, each group according to the needs of the appropriate composition of personnel.
1 pipeline installation: by the telecommunications sector with the second level of communications engineering installation qualification of the engineering team to complete
Completed, the quality of workmanship to meet the national telecommunications sector relevant construction norms and EIA/TIA569 standards. The welding of wiring bridges and the transition connection of the trunking meet the process and safety requirements of the national electrician's standard for the installation of strong electricity.
2 pull wire installation: open wiring system for pulling the wire construction skills requirements than other wiring much higher, which is mainly determined by the characteristics of the transmission medium. In the open wiring system, the transmission medium used in general there are two types, one for the twisted pair, the other for the optical fiber, their material composition and transmission characteristics, although different, but in the pulling of the wire are required to pull the light and put it lightly, irregular construction operations may lead to a reduction in transmission performance, and even cable damage.
In the construction of the following cases can often be seen:
(1) twisted pair of outer skin wrinkled or torn, this is due to the tension is too large and the corner of the groove, the transition joint does not meet the requirements.
(2) twisted pair of smooth outer covering skin, can not see the problem, but with the instrument measurement found that the transmission performance does not meet the requirements, this is due to pulling the line when the tension is too large, so that the length of the twisted pair of wire elongation, stranding straightening caused. This situation is used for voice and data transmission below 10MBPS, the impact may not be too great, but for high-speed data
transmission will produce serious problems.
(3) No optical signal passes through the fiber, which is caused by improper operation when pulling the cable, and the cable is severely bent
so that the core breaks. This situation is common in fiber optic cabling where the bends.
In order to avoid the above problems in construction, in the ISO/IEC11801 standard EIA/TIA569 standard states:
Twisted-pair cable (especially Category 5 twisted-pair) pulling the cable can not be more than 13 pounds of tension (about 20 kilograms). Fiber optics cannot be pulled with more than 5 lbs (about 8 kg).
In order to ensure the quality of construction, our company stipulates:
(1) The length of each section of the line when pulling the line does not exceed 20 meters, and more than that must be picked up and dropped off; (2) In the line turns must be picked up and dropped off;
(3) Each pulling team needs to be equipped with seven people.
3 fittings termination:
The level of craftsmanship of fittings termination will have a direct impact on the performance of the wiring system. All terminations will be performed by AMP ACTIII trained professional programmers.
Four construction technology requirements
1) Strictly according to the drawings of the construction, under the premise of ensuring the functional quality of the system, to improve the standard requirements, to ensure the quality of construction.
2) To bury (stay) position is accurate, yuan omission.
3) Pipes at both ends of the equipment at the wire should be based on the actual situation to leave enough redundancy. Both ends of the conductor should be in accordance with the drawings provided by the line number with a label to identify, according to the line color to the terminal wiring, and should be marked on the drawings, as construction data for archiving.
4) equipment installation, firm, beautiful, pre-installed equipment, vertical columns, wall-mounted equipment, the end of the consistent, formal and complete data organization without omissions, a variety of field change procedures are complete and effective.
Cable (line) laying
In the weak power system, most of the signal models are DC voltage, current signals or digital signals, so the cable (line) of the laying work should pay attention to the following:
1) cable laying must be set up a person in charge of the command, in the laying of all the construction personnel before the briefing, explaining the number of cables, the beginning of the end of the number, the process requirements and safety precautions. Safety precautions.
2) Before laying the cable to prepare a signboard, labeled with the cable number, model, specifications, map number, starting location.
3) Before laying cables, check whether all the grooves and tubes have been completed and meet the requirements, whether the routing and the location of the information port to be installed are in line with the design, to determine whether there is any omission;
4) check whether the buried pipe is free, whether the pipe with wire in place, if not should be dealt with first;
5) check the pipeline before laying the line, and the pipe should be cleaned and polished pipe mouth before threading. Clean and polish the mouth of the pipe. Remove debris and water in the pipe, conditions should be used 0.25Mpa compressed air blown into the talcum powder phoenix to ensure the quality of threading. All metal wire trough cover, edge protection should be polished, no burrs, so as not to scratch the cable.
6) Check the specifications and model of the cable;
7) When threading in the tube, to avoid excessive pulling of the cable, the pulling force per meter should not be more than 7 kilograms in order to protect the pair of stranded distance.
8) When laying cables, cables can not be put into dead ends or knots to ensure that the performance of the cable is good, horizontal cable ducts in the laying of cables, cables should be straight, try to avoid cross;
9) do put the line to protect the protection, can not hurt the protective sleeve and step on the cable;
10) For the installation of the ceiling of the area, all the horizontal cable laying must be completed before the construction of ceiling; all cables should not be exposed to the outside of the cable;
1) the cable should not be exposed to the outside of the cable. All cables should not be exposed.
11) leave the length of the line: floor wiring room, equipment room end to stay the length (from the trunking to the ground and then back up) copper cable 3 - 5m, fiber optic cables 7 - 9m, the information exit end to stay the length of 0.4m;
12) cable laying, the two ends of the cable should be well-marked, cable marking should be expressed clearly in a cable at the ends of a consistent logo must be marked, the line labeling should be clear and readable. Marking the line number requires the left hand to take the head of the line, the end of the line to the right, in order to facilitate the confirmation of the line number in the future.
13) Vertical cable placement: threading should be carried out from the top down, in the release of the cable required to be placed parallel to each other, can not be intertwined, cross, do not make the cable put into a dead bend or knot.
14) Fiber optic cables should be avoided as much as possible to avoid heavy extrusion;
15) Ramping: construction of a good temporary tie when threading, avoid vertical tension and then tie, in order to reduce the impact of gravity sagging on the performance of the cable. Trunk line after wearing the whole tie, require tie spacing <=1.5M. fiber optic cable should be individually tied. Tying, such as bending should be satisfied with not less than 10CM variant radius;
16) coaxial cable installed in the ground shall have a shielded aluminum foil to the shade of moisture.
17) Coaxial cables should be inspected during installation, and the shielding layer should not be damaged.
18) When installing cables, attention should be paid to ensure that the temperature of each cable is higher than 5?C.
19) Fill out the release record sheet: the record of the backbone copper or fiber optic cables given the number should be clear floor number, serial number;
20) cable laying is completed, the two ends of the cable must be left in a sufficient length, the bends, straight line section should be organized to get the commanding officer to confirm that meets the design requirements before pinching. Design requirements before pinching.
21) After the wire groove line laying is completed, the groove cover should be covered to meet the fire, moisture, rodent requirements.
Cabinet (box) wiring
1) rack, cabinet installation according to the design of the installation plan, the installation screws must be tightened;
2) rack, cabinet installation should be aligned with the location of the incoming wires; installation, should be adjusted to the level, verticality, deviation should not be greater than 3mm;
3) according to the installation plan provided by the supplier, the design of layout diagrams for the wiring frame Installation,
4) Racks, cabinets, distribution frames of the metal base should be a good grounding connection.
5) Verify that the cable number is correct
6) Before termination, the cable in the cabinet should be tied, tied neatly and beautifully. There should be about 1 meter of mobile margin;
7) Stripping the cable sheath should be used when the special cable opener, shall not hurt the edge layer, the middle of the cable shall not produce disconnection phenomenon;
8) Termination of the terminal must be prepared before the terminal frame termination table, cable termination in accordance with the termination table;
9) from the field into the cabinet (box) in the first place to check the number of cables.
10) From the scene into the cabinet (box) in the cable to be fixed.
11) Cables from the site into the cabinet (box), there should be a certain margin.
12) From the scene into the cabinet (box) in the cable generally do not allow connectors.
13) From the scene into the cabinet (box) in the cable try to avoid crossing each other.
14) According to the diagram of the construction wiring correctly, firmly connected to good contact, wiring neat, beautiful, clear labeling.
15) Select the same signal cable color to be as uniform as possible, to facilitate the installation and commissioning and routine maintenance.
16) Wiring power line, signal line color to distinguish.
17) In AC and DC power lines: red line for the phase line (L) or positive (+); black line for the zero line (N) or negative line (-).
18) In DC signal: yellow is positive (+); green to negative (-).
19) The blue line is the data line.
20) The yellow-green two-color line is the ground line. (Note, but not the DC zero line and DC negative line)
21) Wiring is complete, the second person to double-check the confirmation before power supply, so as to avoid wiring errors caused by the damage to the system equipment grounding requirements
1) The bridge grounding method, the application of copper-plastic wire of not less than 2.5mm? and the main body of the rebar grounding.
2) Each cabinet, chassis grounding resistance is not greater than 1 ohm.
3) equipment in the machine room to take two independent grounding methods, the joint grounding of the work grounding. Work grounding resistance is not greater than 4 ohms, joint grounding resistance is not greater than 1 ohm.
Five construction management and control
Construction management requirements for two purposes: 1. control the entire construction process, to ensure that each process is well organized, the process of coordination between the process; 2. closely grasp the progress of each day's work and the quality of the discovery of the problem in a timely manner to correct.
In order to achieve the above goals, our company has developed a set of measures for total quality management, which is summarized as follows:
1. The implementation of the construction of the person responsible for the system. Supervised by the chief engineer and the user's professional and technical personnel, the person in charge of the pipeline, pulling and termination echelons form a quality control group, responsible for the progress of the project and the quality of the project.
2. Incoming and outgoing signatures. Each construction team is required to sign the time sheet and write down the time when they enter and exit the site, and there is no exception for leaving in the middle.
3. Fill out the construction log. Each construction team leader every day in the log sheet to fill in the daily construction progress, ladder team leader to fill in the quality inspection.
4. After the completion of each process on each floor, the chief engineer of our company and the person in charge of the user will carry out the inspection and fill in the quality inspection form of the construction process, signed by the person in charge of the inspection on both sides.
Through strict management, our company is able to achieve reliable quality of work, perfect termination fittings process, line arrangement neat and tidy.
Six technical and organizational measures to ensure the quality of engineering construction quality management standards
The quality system established and perfected according to ISO9001 quality standards to ensure that the quality of engineering and installation in line with the requirements of the design provisions; and for the process of design, development, production, installation, and service to formulate quality measures to ensure that the engineering projects, product quality to meet the requirements of the contract provisions. The quality system will be applied to the whole process of the implementation of this project.
Our quality policy is: the user and the community to the company's character and product (engineering) satisfaction and benefit, is our eternal purpose
Our quality objectives are: first-class talent, first-class technology, first-class products, first-class engineering, first-class service, first-class management, so that the user's risk down to zero. Our commitment is: a hundred years of planning, quality first, close cooperation, mutual coordination, careful construction, well-organized
Weaving, dry a project, set up a monument. Quality management links we will strictly implement the ISO9001 system engineering quality system, and in the whole construction process, effectively grasp the following links:
1) standardization of construction drawings and drawing quality standards
2) pipeline construction quality inspection and supervision
3) wiring specifications review and quality requirements
4) wiring construction quality inspection and supervision
4) the wiring construction 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) Filling in and checking of monitoring parameter setting table of weak power system, such as DDC monitoring parameter setting table of building automation system, etc.
8) Auditing and implementation of commissioning outline and quality supervision
9) Reviewing and implementation of system operation, quality supervision
10) Reviewing and implementation of system operation, quality supervision and quality supervision
11) Reviewing and implementation of system operation, quality supervision and quality supervision12) Reviewing and implementation of system operation and quality supervision 9) Statistics and quality analysis of parameters during system operation10) Steps and methods of system acceptance
11) Quality standards for system acceptance
12) Specification of system operation and management
13) Specification of system maintenance and repair
14) Records of annual inspections and summaries of system operation.
Methods of implementation and control of quality activities
(1) equipment, materials into the field, should be managed by the management company, supervision units and the Company's management personnel against the contract on the entry of the type of equipment, quality, quantity of the validation and to make a written pincer, does not meet the contractual requirements of the product must not be entered to ensure that the written material submitted to the owner, the owner has the right to approve or disapprove, in the Written response within the time specified in the contract.
(2) before covering the hidden works, 48 hours in advance to notify the owner, management company and supervision unit for intermediate acceptance to ensure the quality of hidden works. The acceptance records are filed and handed over to the owner upon completion.
(3) Improve the project management system and clarify the division of responsibilities, the project is the overall responsibility of the project manager. Strictly according to the drawings of the construction, under the premise of ensuring the functional quality of the system, improve the process standard requirements to ensure the quality of construction.
(4) Supervisory quality inspection system, on-site management personnel will regularly conduct quality checks and throughout the construction process.
(5) each sub-projects should be strictly in accordance with the operating procedures, the person in charge of each sub-tenancy is fully responsible for the project they undertake.
(6) in the construction process by the project manager and each subcontractor in charge of the project, every day from time to time to check, found that the quality of the problem on the spot verbal communication to solve. The next day, if the same problem is found again and not solved, then again verbally conveyed to solve the deadline; if you can not be solved, then give written notice and bonus deduction, deduction of the amount of money by the project manager of the project at his discretion.
(7) to the owner, supervision companies, management companies put forward written documents of engineering problems, verification and rectification of immediate feedback.
(8) The information at the time of commissioning of the works is properly preserved and provided to the owner at the time of completion, so that the owner can familiarize himself with the systems and carry out maintenance as soon as possible after the delivery of the works.
(9) system operation acceptance: when the equipment installation is completed and debugging operation is correct, the company sent on-site commissioning personnel to carry out system intermodulation, and submit commissioning reports to the owner. I think the company has undertaken all the projects completed, notify the owner in writing for system operation acceptance. The owner may, together with the subjective department or organization experts in accordance with the design and technical requirements specified in the contract for acceptance and acceptance procedures.
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