Oilers/Plant Tenders (HHC) Civil Service Practice Exam

What precaution is typically taken with packing glands when machinery is shut down overnight?

1. They are lubricated for maintenance

2. They are tightened to prevent leakage

3. They are left loose for cooling

4. They are removed entirely

The correct answer is: They are tightened to prevent leakage

When machinery is shut down overnight, it is common practice to tighten packing glands to prevent leakage. This is important because, during a shutdown, any residual material in the system can seep out if the seals are not adequately compressed. Tightening the packing helps maintain the integrity of the seals, minimizing the risk of leaks and potential environmental hazards. This practice not only protects the machinery but also ensures that when operations resume, there is a reduced chance of hydrocarbon or fluid loss, which can be both costly and hazardous. Properly secured packing glands help facilitate smooth operations when the machinery is restarted, as they prevent issues related to improperly sealed fittings that could lead to unexpected maintenance requirements or failures.