Installation specification of automatic control instrument
1. Characteristics of automatic control instrument installation project Compared with other professional installations, automatic control instrument installation has the following characteristics: 1. The construction area is wide, involving the entire project and most professions; 2. The construction process is restricted by other professions; 3 . The quantity of construction projects is large, sporadic and scattered; 4. The cooperation time is long and the effective construction period is short. Therefore, before construction, professional instrument construction personnel should not only understand the detailed design related drawings and documents in detail, but also have certain construction common sense and rich construction experience, reasonably determine the installation location and construction method according to the actual situation of the construction site, and make corrections at any time. The original construction plan. 2. Construction content and procedures of automatic control instrument 1. Construction preparation. Including the preparation of operating conditions (construction technical documents and detailed design documents), construction organization design, proposing equipment list, material budget, and list of machining parts; 2. Cooperate with civil engineering to do pre-embedding and reservation work; 3. Cooperate with process equipment, Professionals such as pipelines determine the positions of measurement and control points and do a good job in the installation of primary (source) components; 4. Various metal brackets (instrument equipment brackets, pipeline brackets, brackets for cable bridges), bridges (slot boxes, trays, Ladder frame), expansion pipes, instrument panels (boxes, cabinets), consoles, etc. production and installation positioning, auxiliary container, processing parts production; 5. Instrument delivery, unpacking inspection and monomer adjustment; 6. On-site inspection Instruments and control room instruments are installed in place, instrument panel cabinet piping, wiring, calibration, wiring, and wiring resistance; Road laying, pressure testing and leak testing; 8. Installation of electrical protection pipes and flexible pipes, laying of cables and compensation conductors, cable insulation test and line finding, grounding system installation, and grounding resistance testing; 9. Equipment heat insulation, pipeline anticorrosion 10. Debugging of automatic control instrument system: joint debugging of detection system, control system, interlocking and emergency stop system (ESD) and distributed control system (DCS) to ensure correct operation; 11. Cooperate with professional process systems for purging and testing 12. Cooperate with the process unit test and commissioning; 13. Delivery, acceptance, and delivery for production. 3. Quality requirements for instrument installation and commissioning In the construction of automatic control instruments, the requirements of design, instrument installation and operation manuals, and technical specifications for instrument installation, adjustment, construction and acceptance must be strictly followed to ensure that industrial instruments and automation control devices can be accurate, sensitive, and reliable. It can complete its detection and control functions stably and reliably, and ensure safe production, so that the production process can be carried out under optimal working conditions, and industrial production automation can be realized. The requirements for the installation and adjustment of construction quality of automatic control instruments are summarized in the following aspects: 1. The type, specification and quality of instruments, automatic control devices and other equipment, and automatic control materials should meet the design requirements; 2. Installation of instrumentation equipment . The content and requirements of the commissioning work should be consistent with the requirements of the installation and operation manual of the instrument; 3. The laying of the instrument equipment and various pipelines and electrical lines should be neat, beautiful, in line with safety requirements, easy to operate, easy to construct and maintain. Instrumentation equipment, pipelines, source parts, valves, pipe fittings, short pipes and processing parts that must be degreased for medium, catalyst, product purity or design requirements must be degreased; Heat preservation and cold preservation should be carried out according to the design requirements.
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