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remaining life assessment of fired tube small boiler

Product Thermal Capacity: 1 - 20 t/h

Working Pressure: 0.7 - 2 Mpa

Available Fuel: Nature gas, coke oven gas, biogas, methanol, liquid propane gas, diesel, heavy oil, light oil, crude oil, etc.

Available Industries: Heat supplying, chemical, food, textile, printing and dyeing, cigarettes and tobacco, fodder, pharmacy, building materials, brewery, rubber, hospital etc.

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Introduction of WNS gas / oil fired steam boiler:

WNS series horizontal internal combustion boiler is a boiler shell type 3 passes wetback oil/gas fired boiler. After fuel is being atomized by burner, flame is full of the wave furnace and transfer heat via furnace wall, this is 1st pass; the high temperature smoke is collected in reversal chamber and then enters 2nd pass which is grooved tubes bundle area; after heat convection, air temperature gradually falls and goes to front smoke box and turn to 3rd pass, which is smooth tubes bundle area, and then enters chimney passing back smoke box and exhausted to the atmosphere.

Technical advantages:

1. Digitized manufacture
The key part such as material cutting, rolling, drilling are proceeded by advanced CNC machining process to reduce the assemble stress and extend boiler working lifetime.
The front and back smoke chamber plates are cut by CNC plasma cutting machine and looks tidy and beautiful.

2.Easy operation and maintenance
Fully automatically operating, with automatically adjustment and protection of burning, water level, temperature and steam pressure.

3. Longer working life
Smoke tube and tube sheet connection is expanded first to eliminate the gap between them, then adopt automatic argon arc welding to relief the stress and expand boilers working life.
Longitudinal and girth joint adopt advanced automatic submerged-arc welding for good welding quality. All longitudinal and girth joint will have 100% radiographic inspection.
Fin tube us ND steel or stainless-steel material which avoid low temperature corrosion.
Inspection procedure point is set up to guarantee the sequence of expanding and welding, avoid cracking of the tube sheet holes.

4. Less fuel consumption
High quality aluminum silicate fiber is used with fire clay insulation, to control the boiler body temperature below 45℃ to control heat lost.
Sufficient steam storage room and heating area makes boiler to generate high quality steam and high thermal power.
Condenser is added to reuse the waste heat of the exhausted smoke to increase feeding water’s temperature and reduce emission temperature, which can increase the thermal efficiency above 98% and save operating cost.

Steam boiler component loading, monitoring and life assessme

In the first method for boiler start-up and shut-down operations, it was assumed that heating from a steam pressure p = 0 to pressure p nom = 18 MPa is conducted with saturated steam, p = p n (T m), where p n is the saturation pressure at temperature T m.After reaching pressure p nom, T-pipe heating continues at a constant rate of temperature change of v T = 7 K/min.

Fossil & Combined Cycle | Structural Integrity Associat

The results were fed into our proprietary boiler tube life model and determined that the tubes had been operating at lower temperatures than expected, and therefore had a significant remaining useful life yet. The plant was able to cancel the costly replacement, resulting in significant savings.

Investigating the Impact of Boiler Aging in Replaceme

Phase-II involves actual boiler assessment which includes on-site inspection and examination of the boiler. Phase-III involves detailed engineering analysis that provides information on remaining life and essential upgrades needed for the boiler [6]. An assessment protocol similar to that used by Saudi Aramco is suggested, when

A Review on Boiler Tube Assessment in Power Plant usi

Vakhguelt et al. [1] this paper describe prediction of boiler tube remaining life by condition assessment of tubes with more efficient method. The authors have visited number of coal fired electric plant and found that a wall thinning and overheating major damage mechanism contribute in boiler tube failures.

2014 Portfolio: Boiler Life and Availability Improveme

Boiler Life and Availability Improvement Program - Program 63 4 Portfolio 201. Electric Power Research Institute | 4. Approach . Projects will advance the understanding of boiler tube and other pressure component damage mechanisms and their root causes, while establishing programs and corrective actions to control risks of in-service failures. This


Boiler and pressure vessel codes and standards provide methods and rules that can be used to evaluate remaining life of boiler components. Annex I of the Pressure Equipment Directive 97/23/EC (PED) requires that the design must take appropriate account of …

Industrial Power Station Aftermarket Equipment | Babcock Pow

Boiler Tube Company of America is a leader in providing boiler replacement pressure part components that improve unit performance by extending component life. Primary to achieving extended life is the use of Boiler Tube Company of America’s spiral clad tubing that utilizes state-of-the-art welding technology.

(PDF) Remaining life assessment of boiler componen

The remaining life of each tube/tube assembly is predicted using a computer code known as TUBELIFE, thus achieving a further level of focus on the tubes/assemblies in the highest risk'' category.


REMAINING LIFE EVALUATION OF BOILER PIPES BASED ON THE MEASUREMENT OF THE OXIDE LAYER Heloisa C. Furtado1, • The inner and outer radii of the tube at time t = 0 (i.e., the nominal or design values In order to validate the results of the remaining useful life assessment obtained from the

P63 Boiler Life and Availability Improvement Progr

Boiler Life and Availability Improvement Program - Program 63 . Program Overview . Program Description . Safety and availability loss due to pressure part failures are two key issues driving R&D on major fossil power plant components, especially in older plants. Boiler tube failures (BTFs) continue to be the leading cause of

Boiler Tube Assessment - M&M Engineering Associat

Recommend Strategies to Prevent Boiler Tube Failures; Predict Boiler Tubing Remaining Useful Life; Boiler tube failures are the leading cause of steam plant reliability issues. A tube failure may cause a forced outage, usually at the most inopportune time. The outage results in lost production and lost revenue. Reducing boiler tube failures

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