【 Weak current College 】 electrical, electronic and fire fire alarm installation project overseeing Regulation (1)

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Electrical, electronic and fire fire alarm installation project overseeing regulation
An overview of the characteristics, the engineering and
* ** * ** * ** * Works by building a residential building (30), B high-rise residential (26), basement (second floor) and bodies of the Hospital (5 layers) project, integrated construction area for building highly 58500M2 is less than 100 meters of the building; the engineering of electrical installation works mainly contains building power, lighting, lightning, fire, power distribution, air-defense distribution, fire alarm system, in which the current system of electronic content: integrated distribution system, cable TV systems, five tables remote system, intercom and furniture and alarm system, hospital ward in the calling system, TV monitor system and perimeter protection system.
This works since the power supply unit substation 10KV introduced four road, high-voltage power supply meet level load requirements.
Power distribution and first basement set A, B, two separately to A substation, B two high-rise residential and organ hospital supply, residential power supply via power supply precast branch cable, electric meter box set is set to vertical layers apparatus, electrical line laying is set, cable shaft through the cable tray combines wear steel concealed. Equipment installation: the electric room, pump room, elevators, rooms etc distribution Cabinet floor installation, electric shaft, wind room, Office, distribution boxes and control box unknown Assembly (lower floor elevation to 1.6m). Mall Office aisle Department for concealed (bottom elevation 1.4), except for a callout. Switch height to 1. 4 m, socket installation height unless otherwise indicated, installation height of 0.3 m.
Lighting power supply from power unit, line laying as BV-wire, welded steel tubes, wire, steel pipe or PVC pipe with a layer of basement negative, negative on the second floor, staircase, with welded steel tubes, wire and tube. The remaining use of PVC pipe.
Fire power: this project is a class of fire load, fire-fighting equipment power supply are made of double end and double power switching power supply, wire to wire, wear-proof welded steel pipe or flame-retardant cable laying. Emergency lighting-Ming comes with batteries for lamps and focus settings combination EPS battery Cabinet.
Lightning lightning protection for this project: classes for second class, roof concealed 10 * 10 lightning network (using galvanized flat steel garden). Use within two main pillar reinforcement for down lead. Use for ground electrode. Roof all metal components are required and roof lightning network reliable welding. Four-layer above every third tier in its structure within the laying of a ring beam rings-40 * 4 galvanized flat steel for grading rings, construction process, the required test grounding resistance less than 1 ohm, otherwise needed to be played on artificial Earth electrode.
Grounding used TN-C-S manner. Grounding system uses the Thunder, grounding, security, ground, ground, combined with electronic equipment.
Basement water pump room, air-conditioned room. Electrical room, use of design, such as potential along the device concealed a root-40 * 4 galvanized flat steel for grounding line, and every 1.5 metres a connection terminal. Electrical vertical full-length downlead second root-40 * 4 galvanized flat steel for earthing and grounding of route, use the second grounding.


This project of automatic fire detection and alarm system II, located in A building, first floor, designed for intelligent two bus system, automatic fire detection devices by area, room, location, function, environmental conditions, and other characteristics that distinguish configuration. All floors are equipped with alarm display box, display the status of this layer of fire. System grounding integrated grounding, grounding resistance not more than 1 euro. Heat and smoke detector ceiling ming, fire hydrant break glass buttons, manual, alarm, intercom Jack, electronically controlled fire shutter, manual controls are mounted on the wall, height 1.4 m; fire alarm, fire alarm strobe light Center distance 2.4 m; signal input module, control-output module in charged device mounted on the wall near the top in dark Pack; emergency broadcast inlay top concealed. All linked control transmission lines are made of flame retardant wire.
The engineering work on the linkage of fire-fighting system requirements: when confirmation when the fire broke out, the auto-start fire pump, and flow indicator action start spray, Elevator landing to the bottom of the stand-by and accept its feedback signal, the burning and lower level alarm, fire broadcasting each linkage control cut related parts cut off the power, control, air conditioning, related parts exhaust fan power supply, cut off the non-fire lighting power supply, shut down, fire shutter down to the end.
This project has a safety system engineering, from TV monitoring system, access control systems, etc, from the podium on the second floor of the security control center unified control management. The building of the TV monitor system camera design for CCD camera, indoor requirements for low light, outdoor requirements for extremely low light or infrared. The main defense at the camera level elevator, stair entrance and hallway. Video transmission lines to prevent electromagnetic interference by SYKV-75-5 coaxial cable along the Groove, or ceiling installation, the branch line pipe top with wear KBG or concealed within the walls. Access control system, intelligent induction card single control, when the fire of fire, the fire alarm system, according to the joint signal fires layer zone automatic discharge door. Security system of the Earth also adopts comprehensive add-in the main building. TV monitoring system camera casing of the nearest route with neighbouring grounding for reliable earthing connection. To prevent lightning damage and high potential, grounding wire with copper core 35mm2 wear PVC pipe concealed within the walls.
This project is a cable TV system signals from the introduction of internal cable TV network, this building, technical requirements for using 30MHZ — 1GHZ sound and TV signal cable wiring system, comprehensive building introduction by scheduling floor. System of transmission distribution equipment parts design requires anti-electromagnetic radiation and electromagnetic shielding effectiveness of invasion. Trunk, main line using SYKV-75-9-type coaxial cable; branch line adopts SYKV-75-5-type coaxial cable, branch distributor with shell ceiling out Pack; route points route along the weak current shaft, and each floor trunking laying on the corridor; branch line adopts KBG tube top and concealed within the walls; user terminal box wall concealed, Center distance 0.3 m. Equipment and components without impinging on the outputs and inputs for 75 Euro. Cable television systems and coaxial cable metal shell, metalThrough pipes, flutes, equipment exposed to conductive parts and grounding connection.
Comprehensive wiring system uses the open-type star topology that can support calls, data, information, text, images and other multimedia services, including computer data information equipment uses RJ45 plug module, the voice of the equipment in the IDC card add-module. Device and connection cable plug, different plug and socket connection between the installation of the adapter. Inserting and card add-module wall concealed, height 0.3 m. Data information into the socket with 4 to 8 pistil CAT5e, pure voice socket wiring using 3 types of cables. Trunk system using multiple six core fiber-optic cable along the weak electricity between membrane trunking installation. Level subsystem uses Groove along the room ceiling beam 5CM laying, leading to data information and voice socket extension to wear KBG pipe laying. Integrated wiring arrangement of cables and cables for flame retardant, distribution frame floor installation.
Broadcasting system as a dedicated music of broadcast systems, on the West side of floor 2 separate function rooms sound control room, and dance music in private broadcasting unit, the broadcasting system in the function room is not held in the activity, available to a layer in the atrium of the background music; broadcasting system mixer, broadcasting unit, speakers are floor installation, microphone socket buried installation; patio speaker wall out Pack; audio control room reserved earthing terminal box and is connected to the floor, a comprehensive grounding.

Second, the project management process

1. participation in the checkup, check electrical drawings and construction, water baths, HVAC, and so there is no cross-contradiction, supervision Audit Diagram views.
2. supervision and review the construction units and applying construction organization plan (programme), electrical induction and induction documents, verify the construction unit of construction inspection instrumentation, tools, quantities, specifications and related documents.
3. press the progress to supervise and approve survey and construction units inspection of cables, wires and busbars, grounding material, such as lightning model specification and the drawings design matches; verification of electrical materials, equipment, product certificate (quality assurance), test reports and so meets the requirements and standards and, if necessary, the site or to entrust qualified unit for electrical performance testing.
4. site acceptance and construction units produced parts, embedded parts and concealed work and subtle acceptance form Visa, parts production; on electrical devices out of the box checked, check the distribution Cabinet, boxes, lamps of model specifications, certification, production license, the test reports, product manual, spare parts, complete, and Visual inspection; site inspection with the construction of civil engineering section meets the installation conditions, reserved, embedded meets the design requirements. After passing the above checks give recognition, not notify units are not eligible to use, and to supervise the exiled, rework, and do the related records or identity.
5. site supervision and construction units according to the specification construction, supervision and construction unit of the post with the self-evaluation and press related requests require inspection, the inspection Division for the intermediate acceptance visa, substandard supervision Division issued a "notice" of supervision, the rectification, to rectification and qualified for the next procedure.
6. supervision and construction units of electrical performance testing, debugging, logging, debugging, and testing.
7. participation in the final acceptance, the audit completed technical information on electrical installation work quality assessments made.

3. supervision by

1. the management contract and construction contracts;
2. construction drawings;
3. electrical installation work construction programme and project management rules;
4. overseeing plan and this project construction organization plan;
5. the following technical standards:
(1) the construction electrical engineering construction quality approval standard "GB50303-2002
(2) the architectural engineering construction quality approval unification standard GB50300-2001
(3) the building and campus cabling systems engineering acceptance of GB/T50312-2000
(4) the automatic fire detection and alarm system construction acceptance of GB-50166-98
(5) the intelligent building weak electricity engineering design and construction Atlas 97X700
(6) the supply and distribution system for acceptance of
(7) the low-voltage distribution system construction specification
(8) national electrical materials, equipment, products and technology standards
(9) State-building project the mandatory standard provisions
(10) the project involves other norms, standards, Atlas, legal and related requirements

IV. main construction installation supervision

1. construction carefully before thoroughly familiar with the drawings, and design intent and construction drawings, water, heating drawings make checks, to avoid the construction of the "cross-car crash" phenomenon;
2. press the design drawings, acceptance and strict supervision of technical documents and construction organization plan plan (programme), to supervise the construction units to project important parts, key process to make individual construction programme (measures), supervision of adherence to visit, stand-by system, security electrical engineering high standards engineering acceptance standards specifications.
3. pipe laying pipe, pipes adopt remaining KBG wires and tubes, to protect the electrical properties of the pipe, the pipe Division use electricity when taking over the grease, caskets with cross-welding. When the bending pipe shall be marked wrinkle, recesses and cracks and other phenomena, bending of tubes of flatness is less than 10%, the bending radius of dark timing is 6 times the outer diameter d above, when the underground should be not less than 10 times the outer diameter d, and completes the tubes rust and corrosion and other treatment work and ensure tube no iron filings and Burr, tube no plug, spout smooth;
4. buried in concrete column, box, box of plates should be fixed firmly close the template (which can be welded to the structural reinforcement on fixed), prevent against concrete pipe box when displacement and concrete slurry into tubes;
5. civil engineering structures in complete wall masonry is finished, do not paint the front must be embedded, install, installation, guarantee the tubes, boxes, boxes and other installation conforms to the design and construction specifications, flat, solid, accurate elevation, in paint and then slotted holes or other destructive ShiWorkers. When the first thread a tube of stagnant water, debris clean-clean, stringing fashion good spout protection, timely spell head do line insulation operations;
6. grounding protection forms using TN-S system, use reinforced and laying of galvanized flat steel for grounding, plus artificial grounding. Lightning protection and grounding and protection work, power to adopt comprehensive grounding do total equipotential bonding installation, practices see Atlas 97SD567 ", Earth resistance not more than 1 euro;
7. the equipotential box and comprehensive grounding between-40X4 connected galvanized flat steel.