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NTPC blast: Death toll reaches 29 - The Indian Express

The Indian Express sent a detailed email to NTPC on the initial reports, with specific questions on whether the bottom hopper of the Unit 6 boiler was choked with ash clinkers ahead of the accident, if a manhole (at 10 metres height) was opened to inspect the choking of the bottom ash hopper, if workers resorted to poking the bottom hopper

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PDF Precautions for Cleaning Water-tube Boilers

boilers and pipes to a common discharge must be secured. The blow-off valves on the operating boiler shall not be opened until the blow-off valves on the unit being removed from service are closed and locked. All lockout/tagout procedures should be in place. Water-tube Boilers: If compatible with cleaning, boilers should be cooled to room

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FM Global Loss Prevention Data Sheets - FM Global

They incorporate nearly 200 years of property loss experience, research and engineering results, as well as input from consensus standards committees, equipment manufacturers and others. FM Global Property Loss Prevention Data Sheets make your businessand the worldmore resilient.

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Marine Boilers Book pdf - MarinersPoint

Marine Boilers Book Pdf GTH Flanagan About Book Description :- Marine Boilers provides the information required by marine engineers taking the Steam Paper, Class Two, for the Certificate of Competency for Marine Engineering Officers of the Department of Transport on boilers and related equipment as used at sea. Much of the information is given in []

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PDF Installation & Operation Instructions

A vacuum breaker should be installed to avoid damaging the liner. Damage to the unit and leakage can occur if a vacuum breaker is not installed. As in all plumbing products and water storage boiler system to reduce the risk of boiler water loss. Steam boiler installations require a low-water cut-off which is also required by most codes.

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Calculating Boiler Efficiency - Forbes Marshall

In order to calculate boiler efficiency by this method, we divide the total energy output of a boiler by total energy input given to the boiler, multiplied by hundred. Calculation of direct efficiency- E= [Q (H-h)/q*GCV]*100. Q= Quantity of steam generated (kg/hr) H= Enthalpy of steam (Kcal/kg) h= Enthalpy of water (kcal/kg)

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Boiler Types and Classifications - Wiki - odesie by Tech

Boiler Types and Classifications. There are two general types of boilers: ''fire-tube'' and ''water-tube''. Boilers are classified as "high-pressure" or "low-pressure" and "steam boiler" or "hot water boiler."Boilers that operate higher than 15 psig are called "high-pressure" boilers.

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PDF OPERATIONS AND MAINTENANCE MANUAL - Superior Boiler

and a buildup of scale inside the boiler. One way to lower the amount of dissolved oxygen in feedwater is use a sparge tube. This injects steam into the feedwater to increase the temperature to 160°F to180°F or so to remove oxygen. Scale is a very effective insulator that will cause a loss of heat transfer efficiency and eventually tube

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Keep the Heat in: How to Reduce Heat Loss in Your Home

There are other simple ways to reduce the overall heat loss, including fitting carpets, underlays, and curtains. The main loss of warm air can be, perhaps surprisingly, through windows and doors which are left open. Ensuring this practice is kept to a minimum can dramatically reduce heat loss. Dampers on open fires to reduce warm air rising up

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Deaerator Pressure Transient - Can Your Boiler Feed Pump

In a typical thermal power plant, the boiler feed water (BFW) pump takes suction from the deaerator and discharges to the boiler through the feedwater heaters. During normal operation, the

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Pressurised Deaerators | Spirax Sarco

The need to remove gases from boiler feedwater and the operation of a pressurised deaerator, plus calculations. Oxygen is the main cause of corrosion in hotwell tanks, feedlines, feedpumps and boilers. If carbon dioxide is also present then the pH will be low, the water will tend to be acidic, and the rate of corrosion will be increased.

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PDF Accidents in Pressure Vessels: Hazard Awareness

Boiler and Pressure Vessel Inspectors recorded the number of accidents involving pr essure vessels at an increase of 24% over the course of a year between 1999 to 2000. These statistics include power boilers, steam heating boilers, water heating boilers, and unfired pressure vessels. However, the

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PDF Principals of Condensing Boiler System Design

Advantages of high delta-T systems include reduced boiler and pump energy use and reduced pipe sizing and distribution heat loss. A condensing boiler is not a compact fluoresce nt lamp (CFL); you can't simply plug it into a typical system and expect it to save energy.

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What is Pitting Corrosion in Boiler? - Boiler Water Treatment

Fire tube boiler: tube sheets, especially weld seams; There are 7 different types of pitting corrosion. In conclusion, Oxygen pitting involves highly localized metal loss, and potential for rapid equipment failure. It is also major cause of failures in low pressure boiler systems.

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PDF A Practical Guide for The Determination of Moisture

A PRACTICAL GUIDE FOR THE DETERMINATION OF MOISTURE CONTENT OF WOODY BIOMASS Overview Use of woody biomass such as mill residues and forest residues is not a new practice by any stretch of the imagination. There is a long and widespread tradition of the use of woody biomass in energy appli-cations such as a boiler fuel, and it represents a very

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