Question 45Steam Plants - QMED

The correct answer is C) precision metal-to-metal contact. In a turbine casing, the upper and lower halves need to be sealed efficiently to prevent leaks and maintain the proper pressure and flow within the system. Precision metal-to-metal contact between the mating surfaces of the casing halves is the most effective way to achieve this seal. The other options are not suitable for this application. Asbestos gaskets (A) are outdated and not commonly used anymore due to health concerns. Flexible steel seal strips (B) may not provide a tight enough seal, and copper gaskets (D) are more commonly used in lower-pressure applications.