Unit B-4 Boiler Plant Operation and Management | Questions with 100 % correct answers | Verified

If the safety relief valve of a hot water heating boiler is set to open at 207 kPa, the operating pressure should not exceed Select one: a. 52 kPa. b. 155 kPa. c. 138 kPa. d. 207 kPa. - c A typical natural gas flame should be Select one: a. blue, with orange at the tip of the flame b. asymmetrical, and as close as possible to the heat transfer surfaces. c. bright yellow, with black tips. d. bright yellow, with orange tips. - a The main burner test firing valve should be opened Select one: a. before starting the main burner b. during a flame-out c. when taking a fuel sample d. when testing the high gas pressure cut-off - a How should the operating limit pressure control switch on a steam boiler be tested? Select one: a. Install a new control annually, because the operating limit cannot be easily tested.b. Observe that the boiler cuts in and cuts out during routine boiler operation. c. Remove the control from the boiler and test with a pressure source and a master pressure gauge. d. Jumper the contacts and observe when the boiler shuts off - b