Preparatory work before introducing utility systems
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What preparations must be made for the equipment before introducing circulating water, instrument air, nitrogen, and steam?
It mainly involves coordination among various positions, as well as the readiness of different work sections; the pipes also need to be warmed up with steam.
1. Confirm that the pipeline installation is complete, the pressure testing has passed, and the three inspections and four fixations have been carried out (check whether accessories such as drain lines and vent lines are installed). 2. The water pipelines need to be flushed, and the steam pipelines need to be purged properly. 3. The first delivery must be carefully verified, and a confirmation form must be filled out. 4. It must be properly isolated from pipelines that do not accept the medium.
Follow the procedures upstairs as a general guide! Make specific adjustments for the equipment itself!
Pipeline pressure testing and leak testing； Pipeline cleaning (including purging; purging is considered successful when no debris is detected upon inspection) ； Confirm the medium being transported in the pipeline ； Steam pipes should be warmed and purged with steam, doing so slowly; attention should be paid to cleaning rust and debris from the drain pipes ； The circulating water pipeline requires pickling, passivation, pre-coating, etc
1. Confirm that the pipeline installation is complete, the pressure testing has passed, and the three inspections and four fixations have been carried out (check whether accessories such as drain lines and vent lines are installed). 2. The water pipelines need to be flushed, and the steam pipelines need to be purged properly. 3. The first delivery must be carefully verified, and a confirmation form must be filled out. 4. It must be properly isolated from pipelines that do not accept the medium. Agree to this
Mainly valve verification and parameter adjustment
Before putting pipelines into use, the three inspections and four determinations must be carried out (including external anti-corrosion treatment for underground pipelines). After that, a hydraulic or pneumatic pressure test is required. Circulating water must be washed thoroughly and chemically pre-coated. When putting air or nitrogen pipelines into use, the valves should be kept partially open to prevent surging in the air compressor due to pressure changes. Steam pipes need to be warmed up, and if they are to feed into a compressor, a firing test must be conducted
Conduct three inspections and four fixations for the pipelines, purge the pipelines, clean them and apply a preservative coating; then carry out testing in accordance with the plant-wide joint commissioning plan. After coordination with the dispatch team, the system is ready to be delivered to the using workshop!