Seek selection and specification information for various types of hand valves, pipelines, and blind flanges

Regulations on Blind Plate Safety – Article 1: To ensure effective isolation of the system or equipment to be repaired from the production system, blind plates must be installed at all connections to facilitate safe maintenance work. Article 2: This procedure must be followed for any work involving the removal or installation of blind plates on equipment and pipelines that contain flammable, explosive, toxic, or corrosive substances. , \. l( o$ of( b) U. Preparatory work and requirements before removing or installing blind flanges: Article 3 The task of removing or installing blind flanges is the responsibility of the unit that hands over the equipment (the production workshop). A maintenance permit must be obtained, safety measures must be established and implemented, a project leader and supervisor must be assigned, and a blind flange diagram must be drawn for reference. Article 4: The person in charge of installing or removing blind flanges must explain the tasks, working methods, process procedures, and safety precautions to those involved in the work, and carefully check whether all safety measures have been implemented. 2 V! P2 R. t* q2 _$ j. S- V% Article 5: The designated supervisors in the production workshop are responsible for ensuring safety throughout the manufacturing process. It is essential to strictly adhere to responsibilities and ensure that staff follow the procedures ； If any violation is detected, stop it immediately or order the person to leave the site. If necessary, personnel from health, fire protection, and gas prevention stations will be on site to supervise. 4 X. t/ T9 l- I6 B Article 6: Before starting the work, the pipelines or systems of the equipment to be repaired must have their pressure reduced, but the pressure should remain slightly above atmospheric level to prevent air from entering, and the temperature should be lowered to below 40°C. If difficulties arise, effective measures must be taken and approved by the Quality, Safety, and Environmental Protection Department. In case of disagreement, consult the production manager; work can only proceed upon approval. % X5 Y/ F+ A0 s9 3 Y 　Article 15: When working for extended periods, breaks should be taken in shifts (usually limited to 30 minutes). If you feel unwell while working, you should immediately leave the work area to rest or seek medical treatment. Article 16: Bolts should be loosened one or two at a time, slowly. Bolts can be removed only after it is confirmed that there is no gas or liquid present. During the operation, personnel must stay upwind and not face directly at the flange gap. Article 17: It is prohibited to use iron tools to strike pipes and fittings; if striking is necessary, bronze tools must be used. Article 18: For pipes with flanges that are located far from the supports, temporary supports or hangers should be installed. Article 19: For temporary lighting when installing or removing blind plates, 36V explosion-proof handheld lamps or explosion-proof lamps powered by dry batteries should be used. Article 20: After all the flange bolts have been tightened, a thorough inspection shall be carried out. Only after confirming that there are no leaks may one leave the site and remove the mask. Article 21: Blind plates shall be manufactured in accordance with technical specifications and kept by a designated person. Ensure it is in good condition.

It should be possible to find it by searching on the forum

You can contact me if needed; I have electronic samples available