Dust-free workshop purification plant decoration ceiling project attention problem
1. Before the construction of the clean room ceiling project, the following concealed works should be accepted and handed over.
(1) Installation of various types of pipelines, functional facilities and equipment in the ceiling;
(2) Installation of keel, boom and embedded parts, including fire prevention, anti-corrosion, anti-mildew and dust-proof treatment;
(3) Other concealed works related to the suspended ceiling;
2. The inspection lot of the ceiling project shall be divided into one inspection lot according to the clean room (area) area of ​​500m2, and less than 500m2 shall also be divided into one inspection lot.
3. Before installing the keel, the procedures for the handover of the room height, the height of the hole and the elevation of the pipes, equipment and other supports in the ceiling shall be handled according to the design requirements.
4. The embedded parts, steel bar and steel hangers in the ceiling project shall be rust-proof or anti-corrosion treatment; when the upper part of the ceiling is used as the static pressure box, the joint between the embedded parts and the floor or wall shall be sealed. deal with. The hanger should be dust-proof.
5. The fixing and hanging parts of the ceiling should be connected to the main structure. It must not be connected to the equipment support and the pipeline support; the suspended ceiling of the ceiling cannot be used as a support for the pipeline support hanger or equipment.
6. Air filters, lamps, smoke detectors, loudspeakers, and all types of pipelines should be flat, tight, and clean around the openings in the ceiling, and sealed with incombustible sealing materials. Seals should be sealed around the inspection port of the concealed project.
7. The elevation, size, arching and inter-board gap of the ceiling should meet the design requirements. The gap between the plates should be consistent, the gap error between each plate should not exceed 0.5mm; and the sealant should be evenly sealed to make it smooth, smooth, slightly lower than the plate surface, and there should be no discontinuities and impurities.
8. The material, variety and specifications of the ceiling finish should meet the design requirements and check the performance of the product.
9. The installation of the boom, keel and veneer must be safe and secure.
10. The material, specifications, installation spacing and connection method of the boom and keel shall meet the design requirements. Metal hangers and keels shall be treated with surface anti-corrosion treatment, and shall have no dust and mildew resistance after treatment.
11. The distance between the boom and the end of the main keel shall not exceed 300mm. When it is greater than 300mm, the boom shall be added. The distance between the booms should be less than 1.5m.
12. The surface of the ceiling finish shall be clean, smooth and of uniform color, without warping, cracks and defects; no mildew or dust shall be produced.
13. The joints of metal hangers and keels should be uniform, the corner joints should be consistent, the surface should be flat, and there should be no warping or hammering.
14. The allowable deviation and inspection method for ceiling installation shall comply with the following regulations.
Entry
project
Allowable deviation (mm)
Testing method
Metal plate
Gypsum board
1
Surface roughness
1 to 2
3
Check with 2m ruler and feeler gauge or level check
2
Seam flatness
1 to 1.5
3
Pull 5m line, less than 5m pull line, check with steel ruler or theodolite
3
Seam height difference
0.5 to 1
1
Check with steel ruler and feeler
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