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1. Check the contents (1) Whether the civil works of the management room, equipment room and work area have been completed; whether the floor of the house is smooth and smooth; whether the height and width of the door hinder the handling of equipment and equipment; whether the door locks and keys are complete.
(2) Whether the position, quantity and size of the pre-embedded ground tanks, dark pipes, holes and shafts of the house all meet the design requirements.
(3) Whether the ground where the raised floor is laid or the grounding in the anti-static measures of the raised floor meets the design requirements.
(4) Whether 220V single-phase power sockets are provided in the management room and equipment room.
(5) Whether a reliable grounding device is provided in the management room and the equipment room. When installing the grounding body, check whether the grounding resistance value and the grounding device meet the design requirements.
(6) The management room and equipment room area, ventilation and ambient temperature and humidity meet the design requirements.
2. Equipment Inspection Equipment inspection mainly refers to the inspection of various wiring materials, including various cables, connectors, pipes and auxiliary accessories.
(1) Inspection requirements for the device 1) The type, specification, quantity, and quality of the cable equipment used in the project should be inspected before construction. Materials that do not have factory inspection certificate must not be used in the project.
2) Checked equipment should be well documented, and unqualified devices should be stored separately for verification and handling.
3) The cables and equipment used in the project shall comply with the requirements of the order contract, or be in accordance with the specifications, models, and grades of the sealed products.
4) The spare parts, spare parts and all kinds of information should be complete.
(2) Requirements for Inspection of Profiles, Pipes, and Irons 1) The materials, specifications, and models of the various profiles shall conform to the provisions of the design documents. The surface shall be smooth, smooth, and shall not be deformed or broken.
2) When the pipe is made of steel pipe or rigid PVC pipe, the pipe body should be smooth and free from damage, and the pipe hole should not be deformed. The hole diameter and wall thickness should meet the design requirements.
3) When using cement pipes for pipelines, inspections shall be carried out according to the relevant provisions in the construction and acceptance of communication pipelines.
4) The materials and specifications of various iron parts should meet the quality standards and must not be skewed, twisted, splintered, broken or damaged.
5) The surface treatment and plating of the iron pieces should be uniform and complete, the surface should be smooth, and there should be no defects such as shedding or bubbles.
(3) Cable inspection requirements 1) The types and specifications of the twisted-pair cables and optical cables used in the project shall meet the requirements of the design and the contract requirements.
2) The contents of the labels and labels attached to the cables should be complete and clear.
3) The outer sheath of the cable shall be intact and the cable shall be accompanied by a factory quality inspection certificate.
4) The electrical performance of the cable shall be checked from the arbitrary three trays in the batch cable to a length of 100m, and the connectors selected in the project shall be sampled and tested for test records.
5) After the optical cable is opened, check whether there is any damage on the appearance of the optical cable and whether the cable end package is good.
6) When the optical cable is used for the integrated wiring system project, the optical cable certification and inspection test data shall be inspected.
7) When inspecting the patch cord (optical jumper) of the optical fiber, the following requirements shall be met: (1) The end face of the movable connector (joint) at both ends of the patch cord shall be equipped with a suitable protective cap.
2 The type of optical fiber in each optical fiber patch cord should be clearly marked. When selecting the optical fiber patch cord, it should meet the design requirements.
(4) Requirements for the use of distribution equipment 1) The model and specifications of optical cable and cable transfer equipment should meet the design requirements.
2) The layout of the optical cable and cable transfer equipment and the name of the logo should be consistent with the design. All kinds of signs should be unified and the signs should be located correctly and clearly.
3. Equipment installation inspection
(1) Installation requirements for cabinets and racks 1) After cabinets and racks are installed, the vertical deviation should not exceed 3mm. The cabinet and rack installation location should meet the design requirements.
2) The various parts of the cabinet and rack shall not fall off or break. If the paint is peeled off, it shall be filled with paint. The signs shall be complete and clear.
3) The installation of cabinets and racks should be firm. If there are seismic requirements, they should be reinforced according to the seismic design of the construction drawings.
(2) Requirements for installation of various types of wiring components 1) All components should be complete, installed in place, and complete with signs.
2) The mounting screws must be tightened and the panel should remain on a flat surface.
(3) Installation requirements for 8-bit modular universal socket 1) It should be installed on the raised floor or on the ground, and fixed in the junction box. The socket panel is upright and horizontal; the terminal box cover can be opened and should have Waterproof, dustproof and anti-pressure functions. Junction box cover should be flush with the ground.
2) The 8-bit modular universal socket, multi-user information socket, or assembly point wiring quick mounting position should meet the design requirements.
3) The fixing method of the 8-bit modular universal socket base box shall be determined according to the conditions of the construction site, and the preset expansion screw fixing method shall be adopted.
4) The fixing screws must be tightened and should not be loosened.
5) Various outlet panels shall have identifications, indicating the types of terminal devices connected to them in color, graphics, and text.
(4) Requirements for the installation of cable trays and trunking 1) The installation position of the bridge and trunking shall comply with the requirements of the construction drawing, and the left-right deviation shall not exceed 50 mm;
2) The deviation per meter of the level of the bridge and slot shall not exceed 2mm;
3) Vertical bridges and trunkings shall be kept perpendicular to the ground, and there shall be no inclination. The verticality deviation shall not exceed 3mm;
4) The trough cut-off and the two-wire trough splice should be smooth and without burrs;
5) The hangers and brackets should be installed vertically, neatly and firmly, without any skew;
6) Metal bridges and trunking joints should be in good contact with the joints and securely installed;
(5) Install the cabinets, racks, wiring device shields and grounding materials used in metal steel pipes, trunkings shall meet the design requirements, close to the ground, and should maintain a good electrical connection.
4. Cable laying inspection
1) The model and specification of the cable should conform to the design specifications.
2) The laying of cables should be straight and natural, and no twisting, looping, joints, etc., should occur. They should not be squeezed and damaged by external forces.
3) Labels shall be affixed on both ends of the cable, and the number shall be marked. The label shall be clearly written, correct and correct. The label shall be made of materials that are not easily damaged.
4) There should be a margin after the cable is terminated. The reserve length of the twisted pair cable between the handover room and the equipment should be 0.5-1.0m, the work area should be 10-30mm, and the length of the optical fiber cable should be 3m-5m. If there are special requirements, the length should be reserved according to the design requirements.
5. The cable termination inspection cable termination shall meet the following requirements
1) Before the cable is terminated, it must check whether the cable identification content is correct.
2) No connector is allowed in the middle of the cable.
3) The cable termination must be firm and in good contact.
4) The cable termination shall comply with the design and construction operating procedures.
5) When connecting the twisted pair cable to the connector, you should look for the line number and line color mark, and do not reverse or misconnect.
6. Engineering electrical test
(1) The electrical test of the integrated wiring project includes the electrical performance test of the cable system and the performance test of the optical fiber system. The test contents of the cable system are the basic test items and the optional test items. Each test should be recorded in detail as part of the completion of the technical documentation.
(2) The electrical performance tester shall comply with the relevant requirements in terms of secondary accuracy.
(3) The field tester shall be capable of testing Category 3 and Category 5 twisted pair cabling systems and fiber optic links.
(4) The test meter should have an output port to output all stored test data to the computer and printer, and perform maintenance and document management.
(5) Cable and optical cable test instruments shall have certificate of conformity and measurement certificate.
CNC lathe is mainly used for processing shaft, disc and other parts of the rotary.
Through the operation of numerical control machining program, it can automatically finish the cutting processing of inner and outer cylindrical surface, conical surface, forming surface, thread and end face, and can carry out the work of turning groove, drilling, reaming, reaming and so on.
The turning center can complete more processing procedures in a single clamping, improving the processing accuracy and production efficiency, especially suitable for the processing of complicated rotary parts.
Some common machine tools can not or inconvenient processing parts, processing quality stability, reduce the labor intensity of workers.
Integrated wiring system acceptance standards and content
In the information age, in addition to telephones, faxes, air conditioners, fire protection, power lines, and lighting wires, a modern building is also indispensable for computer network lines. The integrated wiring system is the foundation of computer network engineering and its importance can be considered. And know. Therefore, the completion and acceptance work of the integrated wiring system project is very important for modern architecture. It must be implemented in accordance with the project's acceptance requirements and work requirements for completion of construction projects, and must not be sloppy and formalistic.