Beach Engineering Electrical and Mechanical Equipment Installation Supervision Practice Deng Jinlu Yang Xiongxiang Li Zehai 21. Beach Hydropower Engineering Company, Panzhihua 617000; 2 Huayuan Water Conservancy and Hydropower Engineering Consulting Company, Beijing 151 is a structural installation; marked as the main transformer and other main mechanical and electrical equipment installation. Beach Hydropower Engineering Company is an engineer supervision unit. Its staffing is mainly based on personnel dispatched by the industry and employs a large number of high and mid-level technical and managerial personnel of Huayuan Consulting Company, and has established a beach electromechanical installation supervision agency. Through the setup of the supervision agency, clear supervision responsibilities, pay close attention to control coordination, effective contract management of the electromechanical equipment installation of the Tantan Hydropower Station, the practice and experience of the electromechanical supervision of the beach project, the improvement of China's ongoing implementation of the supervision system and the development of related projects The discussion on supervision is of great benefit.
0 Overview The main project of Tantan Hydropower Station is divided into 3 bid sections, including civil auxiliary and electromechanical equipment in No. 1 sub-factory and main building, and the metal structure is installed as the standard. The Gezhouling Group of China and Philip Holzmann GmbH of Germany Hutchiv company's Tan Lian camp is responsible for; main transformers, HZ500 cut-out equipment and other main vertical electromechanical equipment and its embedded parts are installed and the factory's electromechanical unit is adjusted to 1 mark. The hydropower bureau of China Gezhouba Hydropower Bureau And Tandian Group, which is composed of Dongfang Electric Corporation.
The beach owner entrusted the Tan Hydropower Engineering Company 5 as the beach project supervision unit. The staffing of the beach is mainly the personnel engaged in engineering supervision in the Lubuge Project and the installation of advanced technical know-how from all engineering bureaus. The rest of the personnel pass through the project. To solve the problem, that is, to scrape, smash, smash, squat, vinegar, inquiries of the company's high and mid-level technical and management personnel, set up the beach of mechanical and electrical installation supervision agency. During the peak construction period, the staff of Huayuan Consulting Company accounted for 48.2 of the total number of electromechanical supervisors. Its senior technical management personnel took the positions, and the senior engineer was responsible for the case. Machine Tun writes the deduction. Ren, Cheng Chengdai, grade assistants and supervisors, ageing assistants, and other duties, played in the installation and supervision of the beach engineering scale 3, and erected a supervision agency based on Jia Jian, according to project management needs, deducted arch dam project department 1 Standard factory project department standard electrical and mechanical project department 1 advance. Responsible for 3 standard project supervision. Each project department has an engineer on behalf of 1 person, 23 senior assistants, and an engineering supervision department of the Technical Department of the Office Contract Department. Under the direct leadership of the engineer's generation, the supervision function of the engineer on the contracted project is fully exercised. Its agency set up the responsibility of the supervision engineer of IlL 2 generation. Under the leadership of the engineer, in accordance with the scope of the owner's authorization, the engineer is fully responsible for and responsible for the various tasks of the subordinate department, and assumes the responsibility for contract management of the mechanical and electrical project engineering supervision.
The engineer is a senior assistant. On behalf of the engineers, they assist the engineers to work on behalf of the staff and make full use of their duties in the technical business.
Received 317 senior engineer of the company and engineer of the electromechanical project department. Engaged in electromechanical technology management; Yang Xiongxiang (3) Long, male Zhejiang Hangzhou Renhuayuan Water Conservancy and Hydropower Consultant Senior Engineer Electrical Engineering Department Engineer Senior Assistant Technical Consultation; Li Zehai 1935 Male. Kunming, Yunnan. Huayuan Water Conservancy and Hydroelectric Consulting Co., Ltd. is a professor-level senior engineer, office of the factory, office of the engineer, and consultants and contractors. Responsible for the management of sending and receiving of various materials, and assisting the project to deal with other parties. Such as Cheng Shidai and manufacturers on-site installation of the contractor designer consulting experts to communicate with each other.
Technical Department. Assist the engineer in charge of providing the design contractor with the technical information of the design paper and inform the organization of the technical disclosure.
Explain the construction plan measures and methods reported by the nuclear contractor in the specification and technical requirements and the rationalization proposal submitted by the contractor.
Contracts Department. Assist the engineers to deal with contract issues on behalf of the contractor, review and approve the contractor’s schedule and project settlement claim changes, and do a good job of checking the contract.
Supervision Department. The Supervision Department implements the whole-process side station supervision, which is responsible for controlling the construction progress of the construction materials and construction quality inspection, project metering review, safety inspection and supervision, inspection of various construction process technologies, acceptance of phased project completion, and timely construction on site. Send necessary on-site instructions.
3 Control coordination in the process of supervision 3.1 Quality control Quality control is the focus of supervision work and is an all-round and full-time all-weather system engineering project. The pre-event control is the key to the quality control. We mainly implement the pre-existing technical disclosure and the construction technology measure examination and approval system. Prior to the commencement of each individual project, the technical department shall repeatedly exchange ideas with the parties on the technical solutions provided by the manufacturer's technical supervision and the technical measures compiled by the contractor. Due to the differences in traditional craftsmanship and construction methods at home and abroad, manufacturers and contractors often have different opinions. At this time, the engineer must preside over and specialize in making Minhwah Minutes. Organize construction during the construction process. In any of the details in the construction process, according to the characteristics of systematic continuity and completeness of professional mechanical and electrical installation engineering, on-site supervision adopts professional and system-by-system and project-by-person responsibility from design, installation and commissioning to trial operation. Follow-up supervision. Real-time supervision of project responsibility system. The quality of the final inspection of the project is linked to the performance of special supervisors.
Establish a perfect quality inspection system. After the contractor has passed the inspection and is only delivered to the site supervisor, the site supervisory committee and the manufacturer's technical supervisor will jointly review the matter. After the re-inspection, only the two supervisors must jointly sign the report, and then send it to the supervision department and the engineer to perform clothing for the senior assistant. , Examine the qualified party to implement a quality ticket veto system for valid visas. For projects with unqualified quality or construction methods that the site supervisor believes will affect the construction quality, the site supervisors have the right to issue verbal instructions to stop or rework the contractors to assist the contractor in establishing effective inspections. The payment of the price of the oral payment is linked to the construction quality of the contractor.
E.g. The beach heart rotor body is a disc structure. The key to its assembly is the control of welding quality. The first central body was assembled, and the engineers held a special meeting to discuss the key construction procedures such as the basic installation of the center body and the assembly welding. The whole center body was welded in the scales, and each class of supervisory team and construction personnel made temperature control and deformation curves in time before shift. The on-site supervision class went down with the class work, and even had supervision of the site supervisor during the latter half of the night.
800830 every morning by the assistant manager of the supervision department, together with the manufacturer's technical supervision contractor technical personnel to analyze the data, discuss the improvement measures, the core role played by the factory supervision, thus ensuring the overall success of welding.
3.2 Progress Control 1 Progressive Investment 4 No According to the plan, the key construction plan can be implemented. For example, in the process of the embedment of a beach main plant, the volute casing welding and hydraulic pressure test of the six units are the two key processes that restrict the progress of the project.
With the support of the owners, the supervisor has taken two measures to require the contractor to invest more manpower resources, from construction of the platform to two stages, and then to the pipeline operation; 5 is to accept the improvement of the construction scheme of only the merchant. The owner added the corresponding construction equipment and invested a few hundred thousand yuan to increase the pressure of the hydrostatic test from one to two. Thanks to the improvement of the construction plan and close matching of the construction, the state of the 6 units! The construction of the project was advanced to the plan. 4. Another example, in order to adapt to the owner's proposal for the power generation plan of the 6 units of the Tantu Hydropower Station, the 231 program was put into production in 1998, 2 units were put into operation in 1999, 3 units were put into operation in 1999, and 1 power plant was put into operation in advance in 2000. The supervisor assists the contractor in moving the stator of the construction plan from the installation room to the machine pit. Chung was originally able to convert only one single installation in an installation room into two or more simultaneous constructions. The original design of the installation room can only accommodate one rotor and one wheel at the same time. The supplier of the supervision and management contractor has been involved in the discussion and on-site measurement for many times, the new cloth 1 site, the guarantee, the rotor and the rotor. Wheel construction site needs. The host supplier only provided one rotor test round frame, which could not meet the construction requirements. The supervisor also cooperated with the contractor to design and make the second round-testing round frame, which satisfies the requirements for the simultaneous construction of the two rotors. Thanks to the major improvement and correct implementation of the construction plan, the plan was finally realized. In December 4, 1999, the last unit was put into operation in the power plant, and the results of six units were put into production 1791 earlier than the original plan.
2 The implementation of the schedule of the contractor's implementation of the progress of the assessment and the establishment of relevant reward and punishment system, but also an effective means of supervision and control of progress.
3.3 Cost Control Cost control is mainly implemented by the Contract Department. The focus of control is on changes. The dynamic law of the construction process determines that the engineering change is unavoidable. The determination of whether the change is reasonable and the calculation of the change of the project price is the controlling factor.
To fairly evaluate claims and disputes, it is necessary to protect the interests of the owners and treat the contractors fairly. In the process of implementation of the 240 plan, in addition to timely and reasonable processing of funds due to changes in the plan and construction of the friendly case, the multiple claims made by the contractor have also been reasonably evaluated, so that the contractor can obtain Fair compensation.
3.4 Project Coordination During the construction process, a large number of coordination tasks are under the supervision of the supervisors. Therefore, supervisors at all levels must often go to the scene to understand the situation, listen carefully to their opinions and suggestions, and in particular carefully listen to and analyze those disagreements. When the project encounters problems, the dispute occurs, and the progress is hindered, the engineer or the supervision department manager must play a leading role, promptly convene relevant units to conduct research, make timely judgments according to the actual situation of the project, and make timely and accurate decisions in a timely manner. And refers to. However, the supervision is neither the owner nor the superior of the contractor. The coordination of supervision can only be effective when the parties agree. Among the parties, if any party has made concessions due to the coordination of the supervisors and caused a fire damage, the supervisor must provide compensation realistically. In fact, the coordination of supervision has a price.
Supervision is. In carrying out 1 adjustment work, the quality of the engineer's personal supervision is the key. Only the coordinator who is convinced by the contractor is the coordinator of the mediation and assumes the position of the coordinating office between the traders. Supporting Encouraging Contractors to Coordinate Each Other Supervision should not interfere with the coordination or tacit agreement reached between contractors. To this end, supervisors require that different levels of regular coordination meeting systems be established between contractors, and supervisors send corresponding personnel to participate. For example, during the construction of the embedded part of the main engine, there is a large mutual interference between the targets. With the support of the supervisor, the standard establishes two levels of the coordination meeting system, which is held weekly by the general manager of the project's general manager of the production of the 4th week, and Every day of the afternoon (1), a coordinating day coordinating meeting may be held by the on-site coordinator. The engineer dispatched the corresponding clothing assistant or manager of the supervision department to do so. This has achieved good results.
4 A Few Experiences 4.1 It is very important that the pre-supervising supervising unit of the contracting contract should be involved in the early-stage work of the project earlier. The electromechanical supervision work of the Tantan Hydropower Station was involved in this work before the contractor's construction. Therefore, there is sufficient time to understand and pre-compose the preparation of the pre-commissioning plan for understanding the progress of the general construction network and understand the progress of the network and the arrival of equipment. Contradictions include participating in the Design Liaison Committee to understand the vendor's ideas, participating in the tendering and bidding work, etc. The above-mentioned work is beneficial to the supervision work in the future, and can strictly follow the scope of authority entrusted by the owner and check the contractor's performance. Whether the contract was implemented according to the technical requirements of the contract.
4.2 Regarding the side station supervision During the implementation of the construction project, the quality of the construction and whether it meets the standards specified in the design, the station shall observe the construction process visually to see whether it complies with the specifications and design requirements of the construction operation regulations. Construction, which is the main method used by the owners, will inevitably involve many supervisors and supervisors.
The construction quality should be controlled by the contractor itself, and its own construction and quality control personnel should take the initiative to grasp the quality, and it should be emphasized that the side station supervision 4.3 Quality Assurance The basic quality assurance basis mainly includes the following aspects: 1 The use of advanced construction technology construction technology and performance The excellent facilities and mechanical equipment lay the foundation for ensuring construction quality. It insists on a systematic organization of balanced production of the three scientific production quality responsibility systems and strict personnel management system. The construction staff have good quality and optimized labor combinations to create good results for civilized production. Working environment.
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