Section 11 in Orissa Economiser Inspection Administrative Rules, 1952
11. Internal inspection of economiser chamber.
- Detailed instructions for the inspection of economiser are contained in Chapter XI of the Regulation. The following general procedure at inspection should be observed :At a thorough inspection of an economiser, the Inspector should wherever possible have either the steel casting doors open or the brickwork completely removed on the outer side of the economiser chamber to enable him to make a thorough examination of the external surfaces of the tubes, but before doing so, he should satisfy himself that proper provision has been made to isolate the economiser on the gas side as well as on the water connections of the boiler and from any other working economiser.Should the Inspector find that the economiser has not been disconnected on the feed line or is not sufficiently sealed on the gas side or is unreasonably hot or not properly cleaned or sealed, he should decline to proceed with the inspection and report the facts to the Chief Inspector for orders under Sub-section (2) of Section 14.When an economiser chamber is of such size or its construction is such that the Inspector cannot go inside, reasonable provisions should then be made for the external examination of the principal parts. If for any reason the Inspector can not examine it he should report the facts to the Chief Inspector for orders.Preparation for Hydraulic Test - The chest of all mountings subject to water pressure shall by in place and shut tight or blank flanged. The relief Balve shall either by secured or removed and the chest opening blank flanged. The relief value shall either be secured or removed and the chest opening blank flanged. The attachment after the Inspector's pressure gauge and nipple for connection the Inspectors test pump house shall be in order. All caps shall be properly fitted and tightened up. The economiser shall be completely filled with with water, care being taken to allow all air to escape and if possible a preliminarily test not exceeding the working pressure of the economiser shall be taken before the Inspector visit to test the tightness of the joints.When the economiser is hydraulic tested for the first time, it shall be offered entirely bare, at subsequent tests, lagging or brickwork or portions therefore shall be removed if required by the Inspector.(b)Hydraulic tests or economiser at subsequent examinations shall except when the Inspector express required otherwise be made after the inspection. The test pressure to be applied to economiser at such subsequent examinations shall be from one and a quarter to one and a half times the working pressure of the economiser.
