【 Weak current College 】 electrical engineering, intelligent building engineering construction quality overseeing implementation regulation (template) 4

6. electrical installation engineering, intelligent building engineering common quality problems

6.1 material and test checks

6.1.1 main equipment and material does not meet the requirements:

(1) lack of product brochures and prove the performance of factory certification of material;

(2) lack of device entry, before using the product model, specification, Visual inspection and by specifications testing records under the project;

(3) materials, equipment for failing to comply with the prescribed and design requirements apply to use of the site;

Product factory certification, materials demonstrate that procedures do not meet the requirements.

6.1.2 device testing, debugging, documentation, commissioning of the record of the defect:

(1) the device after installation, the lack of national design projects require units (systems) testing, commissioning and operation of the records;

(2) test and debug reports are identified by the non-competent authorities; the test unit

(3) the power, lighting, etc. sub-item project, not by layer, segment, district system debugging and even throw in, no records;

Project handover acceptance of data and documents.

6.1.3 insulation, grounding resistance test record does not meet the requirements:

(1) did not press system master line and branch line, paragraph, district insulation resistance test or impedance value does not conform to the requirements;

(2) the electrical equipment and lightning protection and grounding of the design requirements for the grounding resistance test reports are recognized by the non-competent authorities provide the test unit.

6.1.4 implicit censorship is not timely, gaps, important issues of accountability, quality issues, lack of processing results.

6.2 pipeline laying defects

6.2.1 General pipeline installation problems:

(1) laid in dusty and humid places of wire and pipe, tube and pipe connections not handled moistureproof seals;

(2) wire deformation joint pipeline through the building, or a building Foundation, without compensation, unprotected;

(3) pipe bend a wrinkle, au caves and cracks and other phenomena; bending diameter flat rate greater than 10%; bending radius not symbols;

(4) piping length limit value exceeds the allotted time without Terminal box and compensation equipment;

(5) into the box, the length of the tube, arrange the uneven or are not in place;

(6) out with no straight lines, arrange the uneven, fixed non-compliant, paint contamination;

(7) pipelines and gas, heat, steam and other lines are parallel or cross-laying spacing does not meet the requirements, not to take the appropriate measures;

(8) Dim laying located cannot guarantee sufficient protection, or protection is not used for high-grade cement mortar.

6.2.2 pipe installation problems:

(1) tubes with iron filings Burr, the spout is not smooth, smooth;

(2) failing to comply with the prescribed for rust corrosion;

(3) pipe connection methods do not meet the requirements;

(4) pipe and equipment connected with metal hose into device unused connector, not to protect the Earth, etc.;

(5) piping and boxes to connect the ground wire without welding or soldering length is insufficient.

6.2.3 suspended ceiling in the laying of the common fault:

(1) the material does not comply with the requirements;

(2) line not straight, not firm, enter the person's ceiling is down the tube, stumble;

(3) could not enter the person's head boxes within the ceiling or roof into the junction box is too far away or cartridge port reverse;

(4) the ceiling with extra-low conductors, junction box cover deficiency;

(5) steel pipe laying does not meet the requirements.

6.3 wiring engineering problems

6.3.1 tube thread does not meet the requirements:

(1) wire specifications, models, quality does not meet the design requirements or specifications;

(2) after the first thread, or side of the pipe laying side thread;

(3) thread before Gordon, or wipe out not net, tubes have debris;

(4) the first thread after loading; protection

(5) wet job does not finish ahead of threading, without waterproof measures;

(6) straight up the spout, the thread does not do block processing;

(7) the total tube conductor cross-sectional area (including the outer sheath) more than in 40% of the total area;

(8) vertical lead long, not fixed clamp;

(9) the same road conductor did not put into the same tubes, wire in tube with joints.

6.3.2 conductor connection problems:

(1) copper wire connection not brush Tin;

(2) connection tube, Terminal voltage membrane specification, the connection is not secure, loose, shedding, former top wire crimping unit, wound cores break;

(3) wrapped insulating tape, not tight unevenness, does not meet the original insulation strength;

(4) machine screw pressure connector is not using spring washers;

(5) peeling injury core, cutting line is too long for the dew line;

(6) wire connector is not in the junction box (junction);

(7) conductors wearing distribution box metal hole without protection.

6.4 distribution box, quality problems

6.4.1 case processing does not comply with the requirements:

(1) is not an accredited professional plant production products;

(2) processing of rough, quality does not meet the requirements;

(3) metal caskets don't you do anti-rust anti-corrosion treatment;BR>
(4) with welding, gas welding opening, is not a pipe a hole;

(5) wooden box, splitting, corrosion protection is not required, no vents, capacity 30A above the wooden disc surface is not equipped with galvanized;

(6) the paint is two face paint, not appearance.

6.4.2 box device does not meet the design requirements:

(1) location, elevation does not meet the design requirements or specifications;

(2) fixed is not strong, stress, boxes and wall surface uneven positive;

(3) box, box cast plaster based rejection, not structured, not repair erased, cover lid is not strict;

(4) box plastering without measures, empty crack and fall off;

(5) embedded boxes firmly hold firm, uneven walls, offset, deep recess in the wall;

(6) fire hydrant box signal line junction box or boxes, inconvenient maintenance;

(7) no closet in power strips, fireproof measures tank plate and Metal Stents no grounding or no dedicated grounding; equipped with appliances can open the door, not to do cross-ground;

(8) inside wiring is header, plate, second line wires; after the wiring is not binding or irregular;

(9) work in the zero line and protect the zero line mix that is not set to zero line terminal Board and wire diameter does not comply with the requirements;

(10) plate gate with unidentified circuit name.

6.5 lamps installation problems

6.5.1 lamps location does not meet the requirements:

(1) floor embedded light is not in the room of the Centre;

(2) there is a bar that the chunk's ceiling, light fixtures, ceiling fans, not even by cell block separation;

(3) groups of lamps does not take place, not into columns, horizontal, vertical straight uneven;

(4) pendant lamp, ceiling fans are not vertical, uneven; dual chain hoist is not normal, not parallel;

(5) light touch other structures, Earth distance does not meet the requirements.

6.5.2 wood stand, plastic Desk installation does not conform to the requirements;

(1) installation is not strong, not smooth, light is not centered;

(2) wood-rough, brush oil quality is not good;

(3) sets of strength is not enough.

6.5.3 lamp installation does not meet the requirements:

(1) lamp is not more than 3kg; embedded Widget

(2) more than non-stereotyped 3kg or large lamps, embedded parts no structure checking, soft line pendant lamp limited to glass 1kg, no control measures; whereabouts wounding

(3) General lighting using wooden wedges or bonding fixtures, unreliable;

(4) ceiling-mounted, fixed lighting, no dedicated framework or not connected with the main joist;

(5) not to use galvanized screws, the wire through the holes in the metal, without protection caps reverse phase line.

6.5.4 protection line installation does not meet the requirements:

(1) from the ground below the luminaire 2.4m, metal casing without ground (zero);

(2) into one ceiling lighting, metal shell without ground (zero).

6.5.5 cords pendant lamp installation does not meet the required:

(1) hanging lines not insurance deduction at both ends, or the button does not work, hanging cord length does not comply with the requirements;

(2) free for pendant lamp is not set in the form of plastic, its head and distance and height does not comply with the requirements;

(3) soft line end not coiled, not brush Tin hit flat, power cable connection method incorrectly, has woven wire without insulation layer.

6.5.6 open-air and humid places not covered with waterproof lamp;

6.5.7 ceiling and fire safety requirements for workplace lighting, failing to comply with the prescribed fire, heat insulation;

6.5.8 belt cover or double tube no hood lamp did not use chains hanging. Wires are not woven in the chain, the stress caused by wires.

6.6 switch installation does not meet the requirements

6.6.1 switch does not control the line, move up and down and turn on the switch is not a direction;

6.6.2 installed incorrectly, the door or farther away from the door, the impact of the use;

6.6.3 the installation location and water, and gas distance does not meet the requirements;

6.6.4 elevation is inconsistent, hyper-permissible deviations;

6.6.5 open-air or humid places unused waterproof switch.

6.7 socket installation problems

6.7.1 residential and child activities is not lower than the socket uses safe 1.8m outlet;

6.7.2 phase, zero, ground, sleep on the crimping position does not comply with the requirements;

6.7.3 protection zero line and work zero line mix, socket elevation is inconsistent, hyper-permissible deviations;

6.7.4 indoor and outdoor and from water sources near socket outlet with waterproof splashing;

6.7.5 pulp wood, screws tripping.