Oilers/Plant Tenders (HHC) Civil Service Practice Exam

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What is usually sufficient for steam jobs regarding lubricant in asbestos packings?

Additional lubricant must be added
Lubricant impregnated by manufacturers
No lubricant should be used
Only water should be used

The correct answer is: Lubricant impregnated by manufacturers

Lubricant impregnated by manufacturers is typically sufficient for steam jobs in asbestos packings due to the nature of the materials and their intended applications. Asbestos packing is designed to handle high temperatures and pressures, which is common in steam jobs. The manufacturers incorporate a specific amount of lubricant into the packing material to ensure proper lubrication and to maintain low friction during operation. This built-in lubricant is formulated to withstand the harsh conditions, reducing wear and extending service life. Using additional lubricant or solely water can compromise the effectiveness of the packing and may even lead to performance issues. Additional lubricant might not be compatible with the original composition, and water, while it can provide some cooling, won't support the lubrication needs adequately. Therefore, the impregnated lubricant from the manufacturer is designed to meet the requirements for preventing damage and ensuring efficient operation during steam jobs.