1. The blind plate shall be suitable, flat and smooth, and there shall be no cracks or holes after inspection. High-voltage blind plate shall be qualified in flaw detection.
2. The diameter of the blind plate should be made according to the sealing surface of the pipeline flange, and the thickness should be calculated by strength.
3. The blind plate should have one or two handles to facilitate identification and blockage.
4, should according to the nature of the medium in the pipeline, pressure, temperature, choose the right material for blind gasket.
5. Blind plate pumping and plugging operation must be handled with a blind plate pumping and plugging operation certificate. Blind plate pumping and blocking operation shall not be carried out without the Blind Plate Pumping and Blocking Operation Certificate.
6. It is forbidden to alter or lend the Blind Plate Drawing and Blocking Operation Certificate; When changing the operation content, expanding the operation scope or transferring the operation site, the blind plate pumping and blocking operation certificate shall be re-applied.
7. If the operation approval procedures are incomplete, the safety measures are not implemented, and the working environment does not meet the requirements, the operators have the right to refuse the operation.
8. When the toxic gas pipeline and equipment pump the blind plate, the pressure of non-irritating gas should be less than 30.66 kPa (200mm Hg); The pressure of irritating gas should be less than 6.66 kPa (50 mm Hg); The gas temperature should be lower than 60℃.
9. The Biotechnology Department is responsible for drawing the position map of the blind plate, numbering the blind plate, and filing the position map of the blind plate by the Biotechnology Department.
10, the operator must do a good job of personal protection, and there must be a special person to supervise the operation, and the guardian must not leave the scene before the end of the operation.
1 1, where the operation is complicated and dangerous, besides the guardian, there should be fire brigade and medical personnel present. If the whole production system is involved, the production dispatcher and relevant production leaders must be present.
12, when working in flammable and explosive places, hot work is not allowed within 30 meters of the workplace; Explosion-proof lamps and tools should be used for work lighting, and it is forbidden to knock pipes and flanges with iron tools.
13, blind plate pumping and blocking high-altitude operations should be handled in accordance with the Safety Regulations for High-altitude Operations.
14, it is forbidden to block two or more blind plates on the same pipeline at the same time.
15. When drawing and blocking multiple blind plates, the person in charge of construction shall command the operation uniformly according to the position map and number of the blind plates.
16. Each blind plate shall be marked to indicate the position of the blind plate.
17. The Biotechnology Department is responsible for filling in the Safety Operation Certificate for Drawing and Blocking Blind Plate in duplicate, and submitting it to the construction unit for confirmation together with the position map of blind plate and safety measures, and obtaining the approval of the company's security department.
18. The approved safety operation certificate for blind plate plugging shall be issued by Biotechnology Department and Safety Department respectively.
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