This lower pressure operation, combined with the shorter distance between the water/steam interface and the steam outlet pipe, further increase entrainment. Older boilers, while much larger, have a larger steam space which can tolerate greater changes in steam demand without severe changes in steam pressure or water level.
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Indian Boiler Regulations » The Piping Engineering World
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(l) A spring in a safety or relief valve in service for pressures 250 psi and less may not be reset for a pressure more than 10% above or 19% below the pressure at which the valve is marked. For pressures higher than 250 psi, the spring may not be reset for any pressure more than 5% above or 50% below the pressure at which the safety or relief valve is marked.
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D) The steam pressure to all the steam heat injectors shall be 15 psi lower than the water pressure at the ejector. Steam injection heaters shall be supplied with steam from a generator or boiler that uses only United States Food and Drug Administration (FDA) approved additives or …
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When steam demand from the plant is low, and the boiler is capable of generating more steam than is required, the surplus steam is injected into a mass of water stored under pressure. Over a period of time the stored water content will increase in temperature and pressure until it finally achieves the saturation temperature for the pressure at which the boiler is operating.
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2020/12/31 · 23. Each boilers have a steam gauge, with dial range of not less than one and one half time and not more than how many times the maximum allowable working pressure? a. twice b. thrice c. 4 times d. 1.5 times
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Pressure Vessels less than 1.5 cubic feet in volume or 6 inch diameter shall be registered as fittings if they are connected to or are part of a piping system or pressure vessel.
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generator. The steam then exits the turbine at a lower pressure and is used for thermal needs at the site. Boiler/steam turbines are typically used when solid fuels (e.g., coal and biomass) or process waste streams are available for CHP applications. Figure 3
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Indian Boiler Regulations. Steam lines with conditions listed below fall in the scope of IBR. Lines having design pressure (max. working pressure) above 3.5 Kg/cm2 (g). Line sizes above 10″ inside diameter having design pressure 1.0 Kg/cm2 (g) &above. Lines with design pressure less than 1.0 Kg/cm2 (g) are excluded.
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Indian Boiler Regulations » The Piping Engineering World
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generator. The steam then exits the turbine at a lower pressure and is used for thermal needs at the site. Boiler/steam turbines are typically used when solid fuels (e.g., coal and biomass) or process waste streams are available for CHP applications. Figure 3
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High-pressure boilers will heat steam above 15 psi and water at pressures that exceed 160 psig. Temperatures in high-pressure boilers will exceed 250 degrees F. Because of the elevated pressure at which these boilers operate, they need to be monitored to ensure safety at all times.
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Pressure Vessels less than 1.5 cubic feet in volume or 6 inch diameter shall be registered as fittings if they are connected to or are part of a piping system or pressure vessel.
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When steam demand from the plant is low, and the boiler is capable of generating more steam than is required, the surplus steam is injected into a mass of water stored under pressure. Over a period of time the stored water content will increase in temperature and pressure until it finally achieves the saturation temperature for the pressure at which the boiler is operating.
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In some steam drum designs, water level is extremely critical because the baffling may isolate a generating section of the boiler when the steam drum water level falls below a certain point. Thin-lipped bursts also occur in superheater tubes when steam flow is insufficient, when deposits restrict flow, or when tubes are blocked by water due to a rapid firing rate during boiler start-up.
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