Topic: Power Plant Engineering
Hydraulic testing of boilers is done at pressures-
- A. Below and above atmosphere
- B. Slightly above atmospheric pressure
- C. At half the working pressures of boiler
- D. At 1.5 to 2 times the working pressure
Answer: D. At 1.5 to 2 times the working pressure
Explanation: Hydraulic test shall be carried out by raising the test pressure gradually. Hydraulic testing before assembly into the boiler is done by testing it hydraulically to 1.5 times the maximum permissible working pressure at site.