【Daily Question No. 262】September 20, 2019
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【Daily Question No. 262】September 20, 2019: When working on the tower, after purging was completed successfully, the manholes were opened one by one from top to bottom; work could proceed only after analysis confirmed that all conditions were met. True or False ( ) Please reply within two days.
Correct: Whenever fire is used on equipment, containers, and pipelines used for the production, storage, or transportation of flammable materials, it is necessary to first cut off the source of those materials and install blind flanges； After thorough purging, cleaning, and displacement, open the manhole for ventilation ； When opening manholes, they should be opened one by one from top to bottom; only after a satisfactory analysis is conducted can heating be used. If heating is to continue after a break of more than 30 minutes, another analysis must be carried out, or the pipelines and containers must be filled with water before heating can be used