I. Contents of project site management (I) Basic characteristics The on-site management system of the project should reflect the participation of the management and project management in the project management activities, reflecting the planning, implementation, inspection, processing and continuous improvement in project management. Each process reflects the law of project management. Enterprises should use the on-site management system to ensure that the project operates according to the prescribed procedures.
At present, on-site management of mine construction projects generally adopts the organizational form of functional system and implements the responsibility system for project managers. The project manager is fully responsible for on-site management during the construction process, and establishes the corresponding project manager department and construction site management responsibility system according to the project scale, technical complexity and specific conditions of the construction site, and organizes implementation.
The task of on-site management of the construction project is to take the construction site as the management object from the date of signing the project contract, and to carry out the organization and management of various construction sites with the goal of safety, quality, construction period, cost and environmental protection, until the project Completion acceptance and delivery until use.
Where the construction project is subcontracted, the general contractor shall be responsible for the unified management of the construction site, and supervise and inspect the construction site activities of the subcontracting unit. The subcontracting unit shall, under the unified management of the general contractor unit, establish a construction site management responsibility system within its subcontracting scope and organize the implementation. The general contractor unit may also be entrusted by the construction unit to coordinate the construction site activities of other units directly contracted by the construction unit on the construction site.
(II) On-site project organization and management The construction project manager is the second responsible person of the construction site management organization, and is responsible for the overall construction site management. In addition to the project manager, there are also technical leaders, production deputy managers, safety deputy managers, and mechanical and electrical deputy managers.
The project department has various functional departments (districts), such as production, technology, quality, safety, security, finance, equipment, administrative and health management departments. Safety and production responsibility systems are implemented according to profession, position and division.
The advantage of this form is that it can adapt to the on-site management of more complex mine construction projects, but it must pay attention to the communication between various departments (districts). The division of labor and authority of each functional department must be clear to avoid the formation of multiple leadership orders.
Second, on-site management implementation methods Construction site management generally adopts a combination of dynamic management and static management. Static management is to conduct regular inspections and assessments through the formulation of various rules and regulations and assessment methods. Dynamic management is to carry out irregular inspections, surprise inspections, daily inspections, etc. on the construction site in accordance with relevant rules and regulations and assessment methods.
The direct basis of the inspection is that according to the responsibilities of the management agencies and management personnel at all levels, the legal representative of the enterprise signs the “Project Manager Objective Responsibility Letter†with the project manager according to the site requirements, and the project manager department prepares the “Project Management Implementation Plan†to implement the project before the start of construction. Process management during preparation and construction, until project completion acceptance, completion settlement, cleaning up various creditor's rights and debts, transfer of projects and materials.
On-site management should also be continually optimized. There should be a cyclical process according to the plan feedback. In practice, the experience of on-site management should be summarized, and the on-site management should be developed in depth, and the combined productivity factors should be optimized to make it operate reasonably and effectively. The overall function of enterprise management.
At present, on-site management of mine construction projects generally adopts the organizational form of functional system and implements the responsibility system for project managers. The project manager is fully responsible for on-site management during the construction process, and establishes the corresponding project manager department and construction site management responsibility system according to the project scale, technical complexity and specific conditions of the construction site, and organizes implementation.
The task of on-site management of the construction project is to take the construction site as the management object from the date of signing the project contract, and to carry out the organization and management of various construction sites with the goal of safety, quality, construction period, cost and environmental protection, until the project Completion acceptance and delivery until use.
Where the construction project is subcontracted, the general contractor shall be responsible for the unified management of the construction site, and supervise and inspect the construction site activities of the subcontracting unit. The subcontracting unit shall, under the unified management of the general contractor unit, establish a construction site management responsibility system within its subcontracting scope and organize the implementation. The general contractor unit may also be entrusted by the construction unit to coordinate the construction site activities of other units directly contracted by the construction unit on the construction site.
(II) On-site project organization and management The construction project manager is the second responsible person of the construction site management organization, and is responsible for the overall construction site management. In addition to the project manager, there are also technical leaders, production deputy managers, safety deputy managers, and mechanical and electrical deputy managers.
The project department has various functional departments (districts), such as production, technology, quality, safety, security, finance, equipment, administrative and health management departments. Safety and production responsibility systems are implemented according to profession, position and division.
The advantage of this form is that it can adapt to the on-site management of more complex mine construction projects, but it must pay attention to the communication between various departments (districts). The division of labor and authority of each functional department must be clear to avoid the formation of multiple leadership orders.
Second, on-site management implementation methods Construction site management generally adopts a combination of dynamic management and static management. Static management is to conduct regular inspections and assessments through the formulation of various rules and regulations and assessment methods. Dynamic management is to carry out irregular inspections, surprise inspections, daily inspections, etc. on the construction site in accordance with relevant rules and regulations and assessment methods.
The direct basis of the inspection is that according to the responsibilities of the management agencies and management personnel at all levels, the legal representative of the enterprise signs the “Project Manager Objective Responsibility Letter†with the project manager according to the site requirements, and the project manager department prepares the “Project Management Implementation Plan†to implement the project before the start of construction. Process management during preparation and construction, until project completion acceptance, completion settlement, cleaning up various creditor's rights and debts, transfer of projects and materials.
On-site management should also be continually optimized. There should be a cyclical process according to the plan feedback. In practice, the experience of on-site management should be summarized, and the on-site management should be developed in depth, and the combined productivity factors should be optimized to make it operate reasonably and effectively. The overall function of enterprise management.
The valve stem is an important part of the valve.
It is used to drive, connect the actuating mechanism or handle, and directly
drive the spool to move or rotate, so as to realize the function of valve switch
or regulation.Valve stem in the valve opening and closing process is not only
moving parts, stress components, but also seals. At the same time, it is
subjected to the impact and corrosion of the medium, and it also causes friction
with the packing. Therefore, in selecting the stem material, it must be
guaranteed that it has sufficient strength at the prescribed temperature, good
impact toughness, scratch resistance, corrosion resistance. The valve stem is a
vulnerable part, and the mechanical performance and heat treatment performance
of the material should be paid attention to when selecting.The valve stem in the
valve opening and closing process, under tension, compression and torsion force,
and direct contact with the media, as well as the relative motion between the
friction and filler, so in the choice of stem material, must ensure that it
provides adequate temperature strength, good impact toughness, abrasion
resistance and corrosion resistance of.
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