2022 first-level construction engineer examination , the most important issue for candidates in first-level construction engineer is how many points they can get. In order to facilitate candidates to understand their exam situation in a timely manner and make good work or study arrangements for the next step, Dali Education will promptly organize the latest information on the answers to the real questions after the first-level construction engineer's "Mechanical and Electrical Practice" exam for candidates to check the answers and estimate their own scores. Candidates are advised to continue to pay attention to the first-level construction engineer channel of Dali Education.
"Mechanical and Electrical Practice" Answer Analysis
1. The eccentric reference points of the brackets on both sides of the thermal pipeline compensator should be selected ().
A. Compensator edge
B. Pipeline fixing point
C. Pipeline turning point
D. Compensator center
33333【Answer】D
[Analysis] When installing the brackets of the guide bracket and the movable bracket, the center of the bracket should be considered, and the center of the bracket should not be displaced after thermal expansion. Several brackets close to both sides of the compensator should be installed with eccentricity, and the length of the eccentricity should be half of the thermal extension of the pipe at the fixed point. The direction of eccentricity should be based on the center of the compensator.
2. After the newly installed 110kV transformer is filled, it must be left to stand before withstand voltage test ( )h
A.6
B.12
C.48
D.24
【Answer】B
B
B
B
B
B
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3.After the tower of the wind turbine is in place and tightened, the filling material when the gap on the inner side of the tower flange is greater than 0.5mm should be ().
A. Stainless steel sheet
B. Copper sheet
C. Aluminum alloy sheet
D. Qing Shell paper
【Answer】A
【Analysis】After the tower simplified is in place and tighten, the gap on the inner side of the tower flange should be less than 0.5mm, otherwise it should be filled with stainless steel sheets, and then the upper tower simplified is installed in turn.
4. When the intermediate joint cannot be avoided when the pneumatic signal pipeline installation is installed, connection
should be used. Flange
B. Thread
C. Clutch connector
D. Welding
【Answer】C
【Analysis】When the intermediate joint is not avoided when the pneumatic signal pipeline installation cannot be avoided, the clamp joint should be connected.
5. Among the following reinforcement methods, the air duct reinforcement usually does not use ()
A. Channel steel inner support
B. Steel pipe inner support
C National steel inner support
ml1 D. flat steel inner support
【Answer】A
[Analysis] The reinforcement forms of air ducts include: angle steel reinforcement, folding angle reinforcement, vertical bite reinforcement, flat steel inner support, galvanized screw, rod inner support, steel pipe inner support reinforcement.
6. Escalator The maximum allowable deviation of the running speed of the hand belt relative to the step speed is ()
A.+1%
B.+2%
C.+3%
D.+5%
【Answer】B
【Analysis】The performance test of escalators and automatic sidewalks, under the rated frequency and rated voltage of , the allowable deviation between the speed of the runner, pedal or tape when the runner is no load in the running direction and the rated speed is 5%; the allowable deviation of the running speed of the handrail belt relative to the speed of the runner, pedal or tape is +2%.
7. The insulation method for pouring the prepared liquid raw materials or wet materials into the mold set on the outer wall of the equipment and pipeline is ().
A. Filling method
B. Filling method
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8.The water pressure test of plastic pipe is () times the working pressure.
A.1.15
B.1.2
C.1.5
D.2
【Answer】C
【Analysis】The water pressure test of indoor water supply pipes must meet the design requirements. When the design is not specified, the test pressure of the water supply pipe system of various materials is 1.5 times the working pressure, but it must not be less than 0.6MPa.
9. The following is not composed of the heptafluoride fire extinguishing device ()
A. Selection valve
B. Flow check valve
The flow check valve
C. Diaphragm valve
D. safety valve
html ml0【Answer】C
【Analysis】The automatic fire extinguishing system of sevofluorocarbon is composed of storage bottle set, storage bottle set frame, liquid flow check valve, flow check valve, three-way, reducer tee, elbow, Wuzhi elbow, flange, safety valve, pressure signal transmitter, pipeline network, nozzle, agent, fire detector, gas fire extinguishing controller, sound and light alarm, alarm bell, deflation indicator, emergency start and stop button, etc.
10. Welding measures for spherical can wall panels do not include ()
A. First vertical seam and then ring seam
B. Welding in one direction
C. Positioning plate fixation
D. Segmented welding
[Answer] C
[Analysis] Measures to control welding deformation of wall panels:
1) Side panel welding should first be vertical seams and then ring seams. The ring seams welder should be symmetrically distributed and welded in one direction; when base welding, the welder should be segmented and re-welded in sections.
1 2) When welding thin plates, electrode of 03.2 should be used to weld the welding parameters of small current and rapid welding, and use small welding heat input to reduce the heat input of the weld, reduce welding stress, and reduce welding deformation
11. When laying optical cables, the following incorrect one is ()
A. The traction force should be added to the reinforcement core
B. The traction force does not exceed 150KG
C. The traction speed should be 10m/min
D. The traction length is 2km
[Answer] D
[Analysis] When laying optical cables, its minimum dynamic bending radius should be greater than 20 times the outer diameter of the optical end. The traction end of the optical cable should be technically treated. A traction machine that automatically controls the traction force can be used for traction. The traction force should be added to the reinforcement core. The traction force should not exceed 150kg. The traction speed should be 10m/min. The straight line length of a single traction should not exceed 1km. The reserved length of fiber connector should not be less than 8m.
12. When the coating is constructed, the paint rebounds and a large amount of paint mist will occur. ()
A. Air spraying method
Brushing method
C product method
D. High-pressure airless spraying method
【Answer】A
【Analysis】Advantages of high-pressure vital air spraying: overcome the phenomenon of paint rebound and a large amount of paint mist flying during general air spraying, which not only saves paint, but also reduces pollution and improves labor conditions; the working efficiency is several times to more than ten times higher than that of general air spraying, and the coating film quality is better, suitable for large-area object coating.
13. The function of lubricating oil does not include ()
A. Extend the mechanical life
B. Reduce friction and side friction
C. Reduce vibration
C. Reduce vibration html ml0 D. Make the equipment have good working performance【Answer】C
[Analysis] Lubrication and equipment refueling are necessary conditions to ensure the normal operation of mechanical equipment. The friction, surface damage of friction between friction pairs and reduce temperature through lubricants, so that the equipment has good working performance and extends its service life.
14. The statement about grounding module is incorrect ().
A. The buried depth of the top surface of the grounding module should not be less than 0.6m
B. The spacing between the grounding modules should not be less than 3~5 times the length of the module
C. The grounding module should be connected in series after installation. ml3 D. The lead line should be no less than 2 [Answer] C [Analysis] The top surface buried depth of the grounding module should not be less than 0.6m, and the spacing between the grounding modules should not be less than 3 to 5 times the length of the module. The modules should be in position vertically or horizontally and should be kept in good contact with the original soil layer. The grounding module should be led in a centralized lead, and the trunk line should be used to weld the grounding module in parallel into a loop. The material of the trunk line should be the same as the material of the welding point of the grounding module, and the lead wire should not be less than 2 lead wires. The horizontal distance between the artificial grounding body and the exterior wall or foundation of the building should not be less than 1m.
[Inspection and Examination Point] Technical requirements for building lightning protection and grounding construction P182
15. In the following situations, the contract change is ().
A. Increase or decrease any work in the contract
B. Change the quality standards of any work in the contract
C. Change the baseline position of the project
D. Work in the contract, transfer to others to implement
[Answer] D
hm l1【Analysis】3. Scope of change: Unless otherwise agreed in the special contract terms, if the following situations occur during the performance of the contract, changes should be made:
(1) Increase or decrease any work in the contract, or add additional work;
(2) Cancel any work in the contract, except for transferring it to others;
(3) Change the quality standards or other characteristics of any work in the contract;
(4) Change the baseline, elevation, position and size of the project.
16. The following is an internal coordination and organizational measure ().
A. Meeting
B obeys instructions
C. Clarify responsibilities
D. Give compensation
[Answer] A
[Analysis] Organizational measures: The project department establishes a coordination meeting system, organizes coordination meetings regularly to solve problems that need coordination during construction. Obeying instructions is an educational measure; clarifying responsibility is an institutional measure; giving compensation is an economic measure.
17. The situations that the construction unit’s production management department should confirm during the intermediate handover do not include ()
A. Project file summary
B. Non-destructive testing of static equipment
C. Pipeline system purge
D. Pipeline pressure test
【Answer】A
D. Pipeline pressure test
【Answer】A
【Answer】 ml3 [Analysis] The production management department of the construction unit confirms the following situations: 1) Process, power pipeline pressure resistance test and system purge; 2) Non-destructive testing intensity test and cleaning of static equipment; 3) Confirm the trial operation of dynamic equipment single unit 4) Confirm the trial operation and interlock protection of large units; 5) Confirm the joint calibration of electrical and instruments, and confirm the cleaning of equipment and facilities.
18. The fund use assessment indicators for electromechanical engineering projects do not include the shipwreck rate ()
A Fund turnover rate
B. Fund utilization rate
C. Fund Output value rate
D. Fund occupation rate
[Answer] D
[Analysis] Fund use assessment: The indicators for assessing the effectiveness of fund use are mainly three types: capital turnover rate, capital output value rate, and capital utilization rate.
19. Regarding the practices during equipment procurement business review, the correct one is ()
A. For technical reviews that fail, business reviews will no longer be done
B. Relevant business experts during the review cannot externally hire
C. potential suppliers' Business standard does not need to make evaluations one by one
D. On the basis of business review, comprehensive review can be organized
[Answer] A
[Analysis] B error, business review is organized by a purchasing engineer (or fee control engineer) and reviewed by experts from relevant majors (external experts can be hired). c Incorrectly, the response of the commercial targets of each potential supplier is evaluated item by item in accordance with the tender documents, and the focus is on reviewing whether the price structure of the supplier is reasonable and competitive. D error, Purchasing manager organizes comprehensive review based on technical review and business review.
20. The following statement about the layout of the construction general plane is correct ()
A. The subcontractor shall not arbitrarily change the approved general plane layout
B. The layout of the construction general plane is dynamically managed by the subcontractor
C. The management of the construction general plane, the construction unit shall not entrust the subcontractor to manage
C. The management of the construction general plane, the construction unit shall not entrust the subcontractor to manage
l1 D. The layout of the subcontractor needs to be changed. After approval by the project manager,
【Answer】A
Multiple choice questions
Among the alternative answers to each of the following questions, there are two or more correct answers that meet the meaning of the question, and at least 1 wrong item, no points will be given for multiple or wrong choices; if you choose less, each selected option will get 0.5 points.
21. Direct-drive wind power generation includes the following ().
A. Impeller assembly
B. Wind measuring system
C. Electronic control system
D. Gear speed change
D. Gear speed change
E. Lightning protection
【Answer】ABCE
[Analysis] Direct-drive wind turbine: mainly consists of tower (support tower), cabin assembly, generator, impeller assembly, wind measurement system, electrical control system and lightning protection protection system.
22. Nonferrous metal , the one that belongs to light metal is ()
A. Nickel alloy
B. Titanium alloy
C. Aluminum alloy
D. magnesium alloy
E. chromium alloy
[Answer] CD
CD
CD
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23. The measurement instruments required for triangular elevation measurement include ()
A. Theodolite
B. Level meter
C. Total station
D. Collimator
E. Rangefinder
【Answer】A.CE
Collision instrumentation
24. The lifting load includes ()
A. Weight of the lifted equipment
B. Crane arm
C. Reinforcement of
D. hook weight
2
E. sling weight
【Answer】ACDE
【Analysis】Composition of lifting load: the weight of the object to be lifted (equipment or component) in the lifting state and the weight of the lifting and rigging ( mobile crane generally also includes the weight of the hook and the lifting wire rope weight that hangs down from the head of the arm to the hook). For example, the lifting load of the crawler crane is the sum of the weight of the lifted equipment (including reinforcement, hanging lugs, etc.) and the sling (string buckle), the weight of the hook pulley set, and the weight of the lifting wire rope hanging from the head of the boom.
25. Measuring verification is divided into ()
A. The first verification of the combined product
B. Subsequent verification
Change verification
Change verification
C. Force verification
ml1 D. Periodic verification
E. Arbitration verification
【Answer】ABDE
[Analysis] Classified according to the purpose and nature of verification , the measurement verification is divided into: first verification, subsequent verification, in-use verification, period verification, and arbitration verification according to its verification purpose and nature: first verification, subsequent verification, period verification, and arbitration verification.
26. If the temporary electricity metering device does not meet the installation conditions on site, you can press ()
A. Use capacitor star
B. Use time
C. Specify electricity price
hm. l1D. Electricity voltage
E. Electricity planning
【Answer】A.B.C
【Analysis】Construction units for temporary electricity use should install electricity metering devices as long as they have conditions. For those who do not meet the installation conditions, the electricity bill can be charged based on their capacity, use time, and the specified electricity price.
27. The correct statement of unit project quality control data inspection records is ()
A The data name is written by the construction unit
B. The number of data copies is filled in by the supervision unit
Change opinions are filled in by the supervision company
D. The inspection conclusion shall be filled in
E. The record signer is the technical person in charge of the construction unit
【Answer】AC
Analysis】The data name and number of copies in the inspection record form of the unit (sub-unit) project quality control data should be filled in by the construction unit, and the inspection opinions and inspectors shall be filled in by the construction (supervisor) unit. The conclusion shall be agreed upon by the parties involved. The construction unit shall fill in the record form signer: the project leader of the construction unit, the project leader of the construction unit (general supervision engineer).
28. The following special equipment production license is correct ()
A. Thermal pipeline must be GB2 level
B. The gas pipeline must be GA1 level
C. Design pressure 6MPA process pipeline must be GC1 level
D. The design pressure is 5.3MPA, the designed temperature is 460 degrees. The process pipeline should be GC1 level
E. The design pressure is 12MPA long oil pipeline with long oil pipelines of GA1 level
[Answer] A. DE
[Analysis] Gas pipeline GB1, thermal pipeline GB2, A is correct, B is wrong.
belongs to the GC1 level (1) The process pipeline for transporting hazardous chemicals catalog is acute toxicity level 1 medium, acute toxicity level 2 gas medium and acute toxicity level 2 liquid medium with working temperature higher than its standard boiling point;
29. Welding of a certain alloy steel specimen. The overall structure of the specimen is complex, with a large rigid shape and a thick weldment. The welding rod used for welding should have ()
A. Good crack resistance
B. High strength
C. Good toughness
D. High plasticity
E. Large rigidity
[Answer] A.C, D
[Analysis] For thick weldments with complex structure and large rigidity, during the welding process, the cooling speed is fast, the shrinkage stress is high, and it is prone to cracks. Welding rods with good crack resistance, good toughness, high plasticity, and low hydrogen-induced crack tendency should be selected, such as low-hydrogen type welding rod , ultra-low hydrogen F welding rods and high toughness welding rods. Textbook p52.
30. Among the following materials, the on-site sampling inspection is ()
A. Wire and cable
B. Plastic switch
C. Lighting fixture
D. Water pipe rubber and plastic insulation
33E. Air duct Rockwool Insulation
【Answer】D, E
case1
A project uses 3 steam generators to provide steam. After the steam generated is collected through the collection cylinder, it is transported to the car room by a steam pipeline. The data of the heat pipe steam generator are shown in Table 3-1. The steam pipeline uses seamless steel pipes, the material is 20 steel , the steam pipeline design pressure is 1.0MPa, and the design temperature is 190℃, which belongs to the GC2 level pressure pipeline . The pipe connection method is argon-electric coupling welding, the weld is radially tested according to the design requirements, the pipe valve adopts flanges, and the pipe needs to be insulated. The steam collection cylinder data are shown in Table 3-2. All equipment, process pipelines, electrical systems and automatic control systems of the project shall be installed by the installation company A, and B engineering supervision company serves as the engineering supervisor. After the construction of the
project started, Company A submitted a construction notice for steam pipelines and gas collection cylinders to the special equipment safety department in accordance with the relevant regulations on special equipment. Supervision Engineer believes that the steam generator is the equipment with the highest pressure and temperature in the entire system, and construction notices should also be handled according to the requirements of the special equipment.
[Question]
1. The supervision engineer requires that the steam generator should also handle the construction notice in accordance with the requirements of special equipment. Is it correct? Explain the reason.
2. During pipeline installation, which personnel need to hold a certificate to work?
3. Calculate the water pressure test pressure of the steam pipeline. Can the steam collector cylinder be tested with the pipeline as a system according to the pipeline test pressure? Explain the reason.
4. What major construction machinery and tools are needed to be used for the construction of this project?
[Answer]
[Analysis] 1. Analysis: Incorrect.
Reason: Steam generator does not belong to special equipment and does not require notification before construction. (2 points)
2. Analysis: Pressure pipeline welder, non-destructive testing personnel, lifting lifting , forklift workers, electricians. (5 points)
3. Analysis: P=1.5P Let = 1.5×1.0MPa=1.5MPa. (2 points) Energy (1 point), reason: The test pressure of the pipeline is smaller than the test pressure of the equipment. When the test is carried out as a system, the test pressure of the pipeline is carried out. (4 points)
4. Analysis: crane, forklift, excavator, jack , pipe puller, welding machine , torque wrench , steel tape measure , hammer, pliers, screwdriver. (5 points)
case 2
A construction unit won the bid for a petroleum liquefaction project in the north. The project adopts modular installation of the cold replacement frame, and divides the entire cold replacement frame into 4 modules. The largest module weighs 132t and has a volume of 12m*18m*26m. A prefabricated factory was set up next to the project. Carry out the steel structure of the module, install the heat exchanger, install the pipe, install the cable tray, and install the lighting fixtures. The project department will manage the entire process of the quality, progress, safety and other aspects of module manufacturing. After entering the site, the project department of the construction unit planned a green construction content for water saving and land saving, and organized the construction stage evaluation of the unit project green construction. The prefabricated factory's module manufacturing was used to identify risks such as electric shock and object strikes. The supervision engineer asked the project department to improve the planning.
The low alloy steel material ordered at temperatures -18C arrived at the prefabricating factory. The project department quality inspector randomly checked the quality of the material, and when cutting the material, he randomly checked whether there were cracks on the cutting surface just now and the 1mm missing edges of the friend. The deformed profile was coldly corrected in the open air.After the project department’s quality manager discovered the problem, he corrected it in time. After the
module is manufactured, it is installed and put into place using a lifting method of 750t crawler crane and a 250t crawler crane and balance beam. Module manufacturing cost table 5. The project department uses the winning value method to analyze the relevant deviations of the project and guide the project operation. After 4 months of intense construction, the unit project has gradually met the acceptance conditions.
[Question]
1. What other contents are included in the green construction stage planning of the project department? Who organizes the evaluation of green construction during the unit project construction stage? And which units will participate?
2. What risks should the project department identify module manufacturing in the prefabricated factory?
3. What are the inappropriate and omissions in steel correction and cutting surface inspection?
4. What is the function of the balance beam in lifting operations?
5. From the end of the second month to the end of the third month, how many yuan was the project progress ahead or behind? How much did the project make a profit or a loss of 10,000 yuan during this period?
[Answer]
[Analysis] 1. Analysis: It also includes material saving, energy saving, water saving, and land saving. (3 points) The construction stage evaluation is organized by the supervision unit and participated by the construction unit and project department. (3 points)
2. Analysis: risk of mechanical strikes, electric shock, explosion, collapse, radiation, lifting, and falling from high altitude. (5 points)
3. Analysis: (1) Omission: The cutting surface just now should be fully checked for the cut surface, and there should be no defects such as cracks, slag inclusions, hierarchy, etc., and defects greater than 1mm. (4 points)
(2) is inappropriate. Low alloy structural steel should not undergo cold correction and cold bending when the ambient temperature is below -12℃
. (2 points)
4. Analysis: 1. Maintain the balance of the equipment being lifted to avoid the sling damaging the equipment
2. Shorten the height of the sling and reduce the lifting height of the dynamic pulley
3. Reduce the horizontal pressure that the equipment is lifted to avoid damaging the equipment
4. When lifting multiple machines, reasonably allocate or balance the load at each lifting point.
5. Analysis:
(1) Project progress:
End of February: SV=960-950=10; (1 point) End of March: SV=1350-1500=-150 (1 point) During this period, the lag behind is: -150-10=-1.6 million yuan (2 points); during this period, it was 1.6 million yuan.
(2) Value during this period:
End of February: CV=960-1080=-120; (1 point) End of March: CV=1350-1580=-230; (1 point) Loss during this period -230-(-120) =-1.1 million yuan. (2 points)
case 3
A construction unit won the bid for the mechanical and electrical engineering project of a high-end commercial building in Southern. The project contents: building water supply and drainage, building electrical, ventilation and air conditioning and intelligence. The main equipment of the project is designated by the construction unit and the construction unit organizes the procurement. The air conditioner in the business building uses fan coils and fresh air system, the air conditioner is a two-control system, the air conditioner and water are used as an imported constant temperature and humidity air conditioner unit, and the pipeline insulation layer is made of rock wool tube shells and tied with iron wire. The construction time of the commercial building electromechanical engineering is summer. The commercial building air conditioning system is jointly debugging with cold source, and the air conditioning system is running smoothly. The construction unit organized the pre-acceptance of the project completion. The following quality problems were found during the pre-acceptance:
(1) The water pressure test record was not found in the installation information of the fan coil unit, and the installation is shown in the figure.
(2) The wiring wire spacing of the pipe insulation layer is 400mm mesh and 1 lag for each piece.
(3) There is no Chinese description for constant temperature and humidity unit in the construction data.The construction unit rectified the project quality problems existing in the pre-acceptance and transferred the project to the construction unit
[Question]
1. What tests should be done before the fan coil is installed? What are the errors in the installation of the fan coil in Figure 1? How to rectify 2. Does the pipeline insulation construction meet the requirements? Explain the reason.
3. Can the completion acceptance be carried out for the commercial building project without the joint trial operation of the system with a heat source?
4. Does the constant temperature and humidity air conditioner unit have no Chinese instructions to meet the acceptance requirements of 2331? How to correct it.
[Answer]
[Analysis] 1. Analysis: (1) Before the fan coil is installed, the fan three-speed test and water pressure test should be carried out. (2 points)
(2) Error 1: The fan coil unit and the refrigerated water return water use galvanized steel pipe .
Correction: The connection between the fan coil unit and other air conditioning equipment and the pipeline should be made of metal or non-metal flexible pipes. (1 point) Error 2: The slope of condensate water pipeline is 5%0.
Correction: The slope of the condensate pipe is 8%0, and it should be sloped towards the water outlet.
(1 point) Error 3: Transparent rubber tube of condensate pipe and fan coil, length 200mm.
Correction: When connecting the condensate pipe to the fan coil, a transparent rubber tube should be installed, and the length should not be greater than 150mm. (1 point) Error 4: The installation direction of the condensate pipe filter is opposite.
Correction: Turn the condensate pipe Y type filter installation direction so that the filter is facing the right. (1 point)
2. Analysis: Does not meet the requirements. (1 point) Reason: When the pipe is insulated with glass wool or rock wool tubes, the specifications of the tube and outer diameters should match the pipe, the longitudinal joints of the tube and shells should be staggered, and the tube and shells should be tied with metal wires, adhesive tapes, etc., the spacing should be 300-350mm (2 points), and at least 2 channels (2 points) should be tied with each section.
3. Analysis: Completion acceptance can be carried out. When the joint trial operation and debugging are not during the heating period, only trial operation and debugging with cold sources will be carried out, and the replacement will be done during the first heating period. (2 points)
4. Analysis: Does not meet the requirements (1 point). Correction: Imported equipment should provide quality certificates, inspection reports, installation, use, and maintenance instructions and other documents (Chinese translation), and also provide certificates of origin and commodity inspection certificates. (2 points)
case 4
A certain power company undertakes the installation project of the distribution room of a certain office building. The main contents of the project include high and low voltage complete sets of distribution cabinets, power transformers, plug-in busbars, channel steel, high-voltage cable procurement and installation projects.
Power company purchasing manager prepares equipment procurement documents according to the relevant procurement regulations of the owner, and then implements procurement after department engineer reviews and project manager approval. Due to the epidemic, labor personnel are unable to come to the project construction from other provinces and cities, labor is imbalanced, labor and construction requirements are out of touch, distribution cabinet installation cannot be carried out as planned, power company implements dynamic management of labor personnel and mobilizes labor personnel in the city to carry out project construction. After the cabinet body of the distribution cabinet was installed and fixed, the professional supervision engineer inspected and pointed out that some distribution cabinets did not meet the specification requirements (as shown in Figure 2), and the construction personnel made rectifications as required. When laying the distribution cabinet signal transmission line, the core of the current signal transmission line does not meet the design requirements during the inspection by the quality inspector. It is a product that does not include the grid. Construction personnel are required to stop work and report to the project department. Construction personnel will remove all the laid signal lines as required.
Question
1. What files are included in the preparation of equipment procurement files? Are the reviewers of equipment procurement documents for this project correct?
2. How to implement dynamic management of labor personnel? What are the requirements for labor workers?
3. Specification requirements for rectification of distribution cabinets.What are the perpendicularity of the cabinet and the disc surface deviation?
4. How to deal with unqualified signal cables?
[Answer]
[Analysis] 1. Analysis:
(1) Project construction contract, equipment purchase book, procurement plan and relevant regulations and documents of the owner for equipment procurement. (3 points)
(2) is incorrect (1 point). After preparation and technical parameters review, the i3 degree (planning) engineer review, and the operating (fee control) engineer review, the project manager will be approved and implemented. (2 points)
2. Analysis:
(1) Dynamic management of labor refers to the dynamic process of tracking, balancing and coordinating labor according to changes in production tasks and construction conditions to solve labor imbalances and disconnection between labor and production requirements. (2 points)
(2) Labor workers should abide by various rules and regulations, obey the work arrangements of the employer, and be competent for all the tasks arranged. Those who are engaged in special operations positions must hold valid special operations certificates for the corresponding operation category. (2 points)
3. Analysis:
(1)① After the cabinet is installed, each cabinet should be grounded and protected by the foundation steel, and the channel steel should have no less than two grounding places. (2 points)
② The inter-incision joint joints of the cabinet should not be greater than 2mm. (2 points)
(2) The allowable deviation of the verticality of the cabinet installation should not be greater than 1.50%0, and the deviation of the disk surface should not be greater than 5mm. (2 points)
4. Analysis:
(1) The construction work of this process should be stopped in time or the use of materials should be stopped, and the identification and isolation should be carried out; (4 points)
(2) The owner and supervisor should be notified in time;
(3) For unqualified raw materials, the supplier should contact the supplier to submit a replacement or return request;
(4) Process products that have formed semi-finished or finished products should be organized to review and propose disposal measures;
(5) Disposal measures should be implemented.
case5
A certain electromechanical unit has tendered and general contracted the electromechanical installation project of the super high-rise business building. Project scope: water supply and drainage, building electrical, ventilation and air conditioning, fire protection, elevators. The project requires a triple supply unit, elevator, escalator, etc., and the construction unit selects the manufacturer through bidding and signs a supply contract for triple supply unit and equipment with the manufacturer. In the bidding documents, the elevator and escalator are responsible for the installation and operation and maintenance of elevators. The construction unit authorized the construction unit to sign a contract with the manufacturer according to the bidding conditions of the main contract. The construction period was 210d, and the delay was deducted by 50,000 yuan per day. During construction, the manufacturer conducted installation, qualifications and other contents and reviewed the information submitted by the manufacturer.
escalator has passed the acceptance and complete information. After installation, it is tested and the transmission faults are found. After investigation, there is a quality problem with a certain step shaft, which affects the accuracy and operating quality, damages the intermediate transmission link, and the parts are repaired and runs qualified. Gongkou asked the pamper
1 delayed by 14d. The construction unit will deduct the penalty and the construction unit will raise objections.
Question
1. Which company supervises the three-unit supply, elevator, and escalator?
2. What copies of the documents provided for the technical information for the acceptance of the escalator? What are the random files?
3. What do the transmission part map 123 represent?
4. Why does escalator manufacturing affect installation accuracy? What directly affect the operating quality of escalator equipment?
5. How much delay fee should the construction unit deduct? Is the construction unit correctly handled? Why?
[Answer]
[Analysis] 1. Analysis: The triple supply unit is supervised by the construction unit, and the elevator and escalator should be supervised by the construction unit.(4 points)
2. Analysis:
(1) The equipment technical data must provide a copy of the type inspection report of the steps or pedals, or a copy of the crack strength certificate of the tape; there should be a copy of the break strength certificate of the handrail belt for public transportation escalators and automatic sidewalks. (3 points)
(2) Random technical documents include civil engineering layout drawings, product factory certificate, packing list, installation and maintenance instructions, and electrical schematic diagrams of power circuits and safety circuits. (5 points)
3. Analysis: 1 is a step pedal; 2 is a step chain; 3 is a rotational guide rail. (6 points)
4. Analysis:
(1) The impact of escalator manufacturing on installation accuracy is mainly processing accuracy and monthly assembly accuracy. (4 points)
(2) Assembly accuracy, including the relative motion accuracy between each moving part, the mating surface and contact quality. Directly affects the quality of equipment operation. (3 points)
5. Analysis: (1) The construction unit should deduct delay fees = 5×14=700,000 (2 points) (2) Correct (1 point). The escalator is a contract signed between the construction unit and the manufacturing plant. If there are quality problems with the escalator, the construction unit should bear the penalty and the fine is correct (2 points).
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2022 first-built real questions answer analysis
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