【 Weak current College 】 power engineering construction site coordination and control

Construction content overview
Civil engineering common power electricity has impetus of ventilation equipment; air conditioners power electric power, air processor power electricity; air supply unit power electricity; electricity power boiler room equipment; water pump station, submersible pumps, sewage pumps, pressure pumps, fire pumps, spray pumps and power electricity; elevator traction mechanical power electricity; kitchen cooking equipment such as power consumption. The electric power equipment from the AC motor, protection, electrical appliances, starting and control equipment, electric wire, cable through a pipe or cable tray, trunkings protection pipe or tank constituted power electricity system. In electrical engineering and construction, comprehensive building all power equipment uses electricity, power engineering. Power engineering construction involves extensive, professional can relate to, thus strengthening the construction site coordination and control management is very important, otherwise it will affect the construction period, delay completion deadline.
Construction site coordination points
1. power engineering, construction and civil engineering construction coordination structure
(1) civil engineering in construction, concrete mixing plant power electricity, concrete pump, tower crane power electric power electricity, there are concrete vibrating bouquets, various electrical machinery, electric welding machine and electric handheld power tools, etc. First you should understand how the various device power electricity capacity, use the site (location), and then consider the construction site temporary power settings, set distribution box capacity, switch quantity, conductor cross section, Cabinet dimensions, etc. Laying of cable trenching backfill construction by civil engineering assistance.
(2) for high-rise structure suspense facilities workers power electricity, by civil construction units with the distribution cabinet installed in a cage, hoists and distribution Cabinet connection protection Earth wire. Hoists in the elevator shaft, the power supply cable securely tied hoists, with civil engineering structure dimensions up to construction levels for power equipment uses electricity. Should every three layers of the cable is fixed to the structure, prevent weight falling fracture caused by cable. At the same time, each layer elevator Hall door within Eclipse, annotated cable has electrical dangers, beware of personal injury occurring.
(3) pursuant to the ventilation system plan, identify the specific location of fan, fan number, specifications, models, voltage, capacity, air flow, base installation forms, basic position size, drawing fan installation detail drawing, construction by civil professional assistance. Wire and tube embedded, tray or trunkings through wall or floor tunnel, embedded fixed hanging bracket for iron, electrical professionals meet civil construction professionals.
(4) the construction of the central air-conditioning system, based on construction drawings to determine the air conditioning room location, central air conditioning unit is chillers or air-cooled units and electric control cabinet, determine the manufacturer's product specifications, equipment, motor and base position size by civil construction professional assistance. The air conditioning room reserved for pipeline and cable through the hole in the wall, plate hole, buried pipeline consists of the construction of electrical construction personnel.
(5) cooling tower concrete base size should be provided by the manufacturer of the product model gives the base size, into and out of the water tower Pier, set by the construction of civil assistance. Cooling water tower fan wire tube embedded, the construction of electrical professionals.
(6) hot water boiler and electrical equipment have fan motor, blower motor, grate machine motor, hoist motor and coaling motor, mucking machine motor, and configured the necessary control cabinet. Ancillary equipment are circulating water pump, fill the water pump, salt water pump and power equipment, such as smoke and dust. In short, units, need to count out which devices are doing device based; which devices in boiler installed, simply provide the main circuit power supply and power control circuit. The statistics from dimension location, equipment base available to civil construction professionals. Control cabinet to motor pipeline consists of the electrical installation of dark professional construction.
(7) fire control system for smoke control fan, use structure duct for pressurization or smoke, so when the wind road masonry, wall cracks should be sealed to prevent plugging air duct walls leak air structure; at the same time, requirements of duct wall surface plastering formation, with the aim of reducing wind resistance; each floor air outlets reserved hole size and manufacturer product outlet installation dimensions to ensure structural duct outlet not tick on the repair of drilling.
2. power engineering construction and architectural decoration engineering construction coordination
(1) power equipment installation, before construction should be professional in the electrical power equipment interfaces, divided up responsibilities, such as the construction of electrical construction personnel arrived at the pipeline laying concrete parts. Clear division of labor, the parties agree to sign on in the meeting minutes. During the construction period the professional press responsibility area is completed to meet, to prevent the phenomenon occurred after the nonsense.
(2) power switch cabinet installation:
1) power switchgear equipment and materials should be consistent with existing national or MoE, technical standards, meet the design requirements, factory certificate, equipment nameplate, manufacturer name, accessories, spare parts are all complete.
2) installed base with steel, rust should be no obvious, material certificate and certificate. Second-line wire should be a "great wall" logo certification.
3) civil construction reserve hole, embedded iron elevation, coordinates, basic dimensions meet design requirements.
4) walls, roof, plastering, spray, wet job is complete waterproofing roof done inside no leakage at the ground without leakage, glazing installed.
5) device handling by lifting working industry, electrical professionals. Determines the weight, the transport distance, car, automobile crane with transport, human trolley transportation or winch barrel staves transport.
6) dynamic control cabinet top ring, can be in the sling wearing rings, no rings, slings shall be hung in the four corners-bearing Cabinet Office, and should not be in the sling lift equipment parts, the sling should be consistent, that long against Cabinet body deformation or damaged parts.
(3) outdoor Motors installed should be waterproof. Indoor, outdoor, motor casings should be made to protect the Earth.
(4) fixed on the basis of General Motors, should not be less than 1.2m maintenance channels.
(5) the use of cement basis, design without requires that the basis of quality generally not less than 3 times the mass of the motor. Foundation of the sides should exceed the motor base edge 10 ~ 15cm.
(6) solid motors of anchor bolts should be concrete foundation firmly integrated into the reserve hole, watering should be cleaned. LoPlug itself should not be skewed, mechanical strength should meet the requirements.
(7) stable loading motor gasket is less than 3 blocks, gaskets and Foundation contacts should be strict, motor base is installed should be timely for the second Grouting.
(8) Dim Assembly boxes fixed: according to the box reserved for the geometry size, verification and body geometry holes slightly larger 10 ~ 15mm, box into the reserve hole fixation, and cement mortar fill real flat surrounding slot plastering cement mortar, then Setup disk solidified surface and veneer face. Such as flat-bottom and walls should be fixed in the wall and then do the metal mesh plastering, are not allowed in the box on the plaster floor. Installation of disc surface requirements for smooth, uniform symmetry around clearance, face (Mun) is fair, not skew, screw force uniform, vertical.
Construction site control focus
(1) power engineering construction drawing examination:
1) audit power construction drawings by have the legal qualification of design unit design, confirm construction drawings to be used effectively.
2) based on the dynamic construction drawings and various professional room power electricity for statistical verification, understand the power of location, power equipment, name, size, and understand the way in and out of line for control cabinet is aggressive or aggressive on out or down under out into the next out, identify, and out of line by consider reserved hole, embedded hanger routing or embedded iron route.
3) carefully reading dynamic construction plan and various professional dynamic construction drawings and maps with TV room power, combined with a comparative analysis of civil chart found problems in construction drawings, lists of centralizing the site, available to design units, organization design gives the low-down, mapping problem solution file, to be checked to confirm, and prompt for design changes.
(2) dynamic project construction organization plan audit:
1) key audit power electrical equipment number, capacity, power supply parts, wires and cables of the specifications for the laying of the way is a buried pipeline or pipeline, the Ming installed is laid with trunking or metal pipe laying, and lists relevant power equipment construction flow chart and practices, as well as power equipment debugging inspection procedures.
2) power equipment for processing orders, large power equipment, such as bulky, heavy, transportation difficult, consider in advance to determine equipment selection, processing cycle, arrived at the scene.
3) structure construction will consider large device channel, such as the 3 underground transport large equipment, first in the floor construction, the reserved good installation of large pores, ready to transport large device channel, regardless of whether the load-lifting beam under heavy load, the development of large-scale equipment transport channel programmes, designed to be implemented upon approval.
4) large power equipment layout on the roof, and structural design to consider whether the floor load to bear, if you are not able to bear without load-bearing beam, these questions need to come up with solutions, design approval and implementation of power equipment installation.
5) large power equipment layout on the roof, the use of tower crane for lifting, civil engineering to roofing, therefore in the structure of the CAP before demolition tower crane, coordination with the civil use of tower crane lifting large equipment in advance to the roof, as a fan, cooling towers, water tanks and other large objects.
6) check power engineering construction materials, processing orders, workforce scheduling, construction schedule. These plans should be civil total corresponds to the construction schedule to ensure that the overall duration progresses smoothly conclusion.
(3) power engineering construction technology gives the low-down, should be based on dynamic layout and equipment installation drawings or computer room floor plan and equipment installation detail drawing. On the technical quality of the operator, implemented construction technology gives the low-down and practices.
(4) the reserved hole, checking of embedded iron, elevation, coordinates, position, size, and so the hole is in line with the dynamic construction drawing design requirements and regulations.
(5) according to the equipment manufacturers to provide basic dimensions and room location map, review of civil construction basis dimensions and embedded fixed device bolt holes, with equipment manufacturers product installation diagram. Does not comply with the requirements of the proposed changes, the revised and improved in time before the device installation process stability.
(6) power equipment arrived to the scene, by construction, supervision, construction unit, the manufacturer of the Quartet of common inspection equipment have no collision damage appearance, all kinds of accessories with a device inventory schedules, equipment, specifications and models, capacity, voltage levels, installation meets the design requirements and provisions. Confirm that the equipment, handling handover procedures.