Oilers/Plant Tenders (HHC) Civil Service Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Oilers/Plant Tenders (HHC) Civil Service Exam. Practice with flashcards and multiple-choice questions. Each question includes helpful hints and explanations. Gear up to ace your exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

Why should packing gland nuts be loosened after an overnight shutdown?

To increase pump efficiency
To prevent packing from becoming damaged due to pressure
To ease the installation of new packing
To maintain steam pressure

The correct answer is: To prevent packing from becoming damaged due to pressure

Loosening packing gland nuts after an overnight shutdown is essential to prevent packing from becoming damaged due to pressure. When a pump is shut down, the pressure within the packing can remain high, creating a scenario where the packing material is compressed and held in a fixed position for an extended period. This continuous pressure can lead to deformation or wear of the packing material, which may ultimately result in leaks or reduced sealing effectiveness when the pump is restarted. By loosening the gland nuts, you effectively relieve the pressure on the packing. This allows the material to relax and prevent any permanent deformation or damage that may compromise the pump's performance. It is a routine maintenance practice to ensure that the packing remains functional and extends the lifespan of the components involved.