Optimizing Boiler Generating Bank Tube Reliability Through the Use of IRIS Non Destructive Testing

2004 ◽  
Author(s):  
Dominic Marra
Keyword(s):  
Dade County ◽  
Destructive Testing ◽  
Ultrasonic Probe ◽  
Optimization Program ◽  
Root Cause ◽  
Testing Method ◽  
Use Of Resources ◽  
Tube Plugging ◽  
Nondestructive Testing Method ◽  
Non Destructive

The boilers’ generating bank (convective) section began suffering repeated random failures at the Miami-Dade County Resources Recovery Facility. The plant embarked on an optimization program to better identify and target the failures using non destructive ultrasonic Internal Rotary Inspection Services (IRIS) testing. Through the use of the IRIS nondestructive testing method, the plant was able to identify 3 major contributors to tube failures by mapping out the locations of the tube wastage across all 4 boilers at the facility. The testing allowed optimizing the use of resources allocated to this area of the boiler and resulted in a considerable drop of unscheduled downtime and increase in generating bank tube reliability. The IRIS testing method involves an ultrasonic probe that is lowered down the inside of the tubes. The tubes are flooded with water in order to get a full 360-degree thickness survey of the tubes from top to bottom, (steam drum to mud drum). The data for over 4.7 miles (7.5 Km) of linear tube per boiler is recorded digitally and presented on a CD. By pinpointing the location and severity of tube wastage across the entire generating bank section, the root cause of the failures could be identified. An integrated solution was developed involving a combination of tube replacements, shielding, tube plugging, and soot blower optimization. This paper summarizes the results of the testing and optimization program.

Application of Gradient Based IR Thermography to the GRP Structures Inspection

2011 ◽  
Vol 488-489 ◽  
pp. 682-685 ◽  
Author(s):  
Lovre Krstulović-Opara ◽  
Endri Garafulić ◽  
Branko Klarin ◽  
Željko Domazet
Keyword(s):  
Pulse Heating ◽  
Non Destructive Testing ◽  
Ir Thermography ◽  
Destructive Testing ◽  
Heat Flows ◽  
Testing Method ◽  
Reinforced Polymer ◽  
Gradient Based ◽  
Non Destructive ◽  
Gradient Approach

The article presents application of non destructive testing method based on the pulse heating infrared thermography used to detect material anomalies for the case of glass reinforced polymer structures. The goal of presented research, based on the thermal gradient approach, is to establish the procedure capable of filtering out anomalies from other thermal influences caused by thermal reflections of surrounding objects, geometry influences and heat flows for observed object.

A New Non-destructive Testing Method Applied to Clinching

2021 ◽  
pp. 1461-1468
Author(s):  
Rémi Lafarge ◽  
Alexander Wolf ◽  
Christina Guilleaume ◽  
Alexander Brosius
Keyword(s):  
Non Destructive Testing ◽  
Destructive Testing ◽  
Testing Method ◽  
Non Destructive

The Development of an Automatic Ultrasonic Non-Destructive Testing System

2014 ◽  
Vol 599-601 ◽  
pp. 1120-1123
Author(s):  
Xiang Ming Zheng ◽  
Jie Hu ◽  
Yao Sheng Chen
Keyword(s):  
Control System ◽  
Data Acquisition ◽  
Work Piece ◽  
Testing System ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Ultrasonic Detection ◽  
Ultrasonic Probe ◽  
Data Acquisition Card ◽  
Non Destructive

The testing principle of metal ultrasonic is using ultrasonic probe to scan in the work-piece surface, and acquire the probe of reflection signal which is sent to computer to analysis by the ultrasonic data acquisition card so as to detect and locate defects in surface of the parts. This system designed a unique scanning structure using the principle of ultrasonic detection and scans the hardware and software control system to realize internal shape detection for different shape of work-piece.

A Non-Destructive Testing Method and Analysis for Air Pressure Distribution in the Stacks of Building Drainage Systems

2008 ◽  
Author(s):  
Cheng-Li Cheng ◽  
Wan-Ju Liao ◽  
Kuen-Chi He ◽  
Chia-Ju Yen
Keyword(s):  
Pressure Fluctuation ◽  
Drainage System ◽  
Field Testing ◽  
Air Pressure ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Drainage Systems ◽  
Existing Building ◽  
Testing Method ◽  
Non Destructive

A drainage system is one of the most essential facilities in building service engineering. Unfortunately relevant technology used today to analyze it was developed decades ago. This research investigated the case of existing building drainage systems in Taiwan, including our previous studies. The purpose of this paper is the development of a non-destructive testing method of air pressure fluctuation in a stacked building drainage system using field observation and experimental study of stack fluid mechanisms. A portable testing device is developed to execute field testing in existing drainage systems to determine air pressure fluctuation in the stacks of buildings. Meanwhile, the Fourier Transform Process is adopted in this paper to analyze the power spectrum of air pressure fluctuation in a drainage stack and to verify the previous theoretical study. Validation obtained from case-studies can be used to confirm the practicality of this portable and non-destructive testing method. As a result, the proposed testing method can be applied to the diagnosis of existing building drainage systems and improve the design of a drainage system in an existing housing complex.

scholarly journals Computed microtomography in the analysis of fiber migration in yarn

2013 ◽  
Vol 13 (1) ◽  
pp. 28-32 ◽  
Author(s):  
Marta Toda ◽  
Katarzyna Ewa Grabowska
Keyword(s):  
Cross Sections ◽  
Two Dimensional ◽  
X Ray ◽  
Testing Method ◽  
Computed Microtomography ◽  
X Ray Computed ◽  
Nondestructive Testing Method ◽  
2D And 3D ◽  
Migration Testing ◽  
Non Destructive

Abstract This study is a short analysis of the use of computer microphotography in fiber migration testing as a modern nondestructive testing method. Microtomography operates similarly to X-ray computed tomography systems used in medicine, but with much better resolution owing to the use of a smaller radiation spot. The internal structure is reconstructed as a series of two-dimensional cross-sections that are then used to create 2D and 3D morphological objects. This process is non-destructive and does not require special preparation of a testing material.

ABOUT THE PROCEDURAL FRAMEWORK OF THE DIGITAL RADIOGRAPHY AT HAZARDOUS INDUSTRIAL FACILITIES

2019 ◽  
pp. 52-54
Author(s):  
K. A. Bagaev ◽  
N. N. Konovalov
Keyword(s):  
Digital Radiography ◽  
Modern Method ◽  
Necessary Condition ◽  
Imaging Plate ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Industrial Facilities ◽  
Testing Method ◽  
Radiation Testing ◽  
Non Destructive

Radiation testing is non-destructive testing method widely used to detect internal imperfections of technical devices, buildings and constructions at hazardous industrial facilities. Digital radiography is the modern method, which uses phosphor imaging plate as the detector of ionizing radiation. Creation of the relevant procedural framework is the necessary condition for the use of digital radiography at hazardous industrial facilities.

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