4 research outputs found
Quantitative infrared thermography resolved leakage current problem in cathodic protection system
Leakage current problem can happen in Cathodic Protection
(CP) system installation. It could affect the performance of
underground facilities such as piping, building structure, and
earthing system. Worse can happen is rapid corrosion where
disturbance to plant operation plus expensive maintenance
cost. Occasionally, if it seems, tracing its root cause could be
tedious. The traditional method called line current
measurement is still valid effective. It involves isolating one
by one of the affected underground structures. The recent
methods are Close Interval Potential Survey and Pipeline
Current Mapper were better and faster. On top of the
mentioned method, there is a need to enhance further by
synthesizing with the latest visual methods. Therefore, this
paper describes research works on Infrared Thermography
Quantitative (IRTQ) method as resolution of leakage current
problem in CP system. The scope of study merely focuses on
tracing the root cause of leakage current occurring at the CP
system lube base oil plant. The results of experiment
adherence to the hypothesis drawn. Consequently, res
Analysis into developing accurate and efficient intrusion detection approaches
Cyber-security has become more prevalent as more organisations are relying on cyber-enabled infrastructures to conduct their daily actives. Subsequently cybercrime and cyber-attacks are increasing. An Intrusion Detection System (IDS) is a cyber-security tool that is used to mitigate cyber-attacks. An IDS is a system deployed to monitor network traffic and trigger an alert when unauthorised activity has been detected. It is important for IDSs to accurately identify cyber-attacks against assets on cyber-enabled infrastructures, while also being efficient at processing current and predicted network traffic flows. The purpose of the paper is to outline the importance of developing an accurate and effective intrusion detection approach that can be deployed on an IDS. Further research aims to develop a hybrid data mining intrusion detection approach that uses Decision Tree classifications and Association Rules to extract rules using the classified data
A study of current and possible future industrial engineering methodologies used to increase energy effieciency
Thesis (MScEng)--Stellenbosch University, 2012.ENGLISH ABSTRACT: Energy-related costs are increasing steadily. This is especially true in South Africa where we
have been dealing with an energy crisis during the past couple of years. The increase in
energy-related costs puts energy dependent industries under financial pressure. It is
therefore imperative to find ways to improve the efficiency with which energy is being
consumed in order to decrease the amount of money that has to be allocated to energy
costs.
The efficient consumption of energy at a facility is crucial and to increase that efficiency,
Energy Management Programs (EMPs) should be implemented. An important component of
EMPs is ascertaining the current energy consumption of a facility in order to identify areas
where possible improvements can be made. This is done by completing an energy audit at
the facility. After the energy audit has been completed and Energy Conservation Methods
(ECMs) have been identified, the implementation of these methods should commence.
The aim of this study is to determine how Industrial Engineering (IE) methods can play a
more integral role in making South Africa more energy efficient. As part of this study,
research was done to identify current EMCs being implemented in different areas and for
different equipment in facilities. This information was compared to IE methods to identify the
possible relationship between the ECMs and IE methods.
Content analyses were completed on both IE and energy efficiency corpora using the
Content Analysis Toolkit (CAT) program. These analyses identified important topics in these
corpora and correlations between these topics in order to show correlations between the IE
and energy efficiency fields. The most significant correlations identified, were between
statistical methods and various energy efficiency topics.
A case study was completed at a company in the Western Cape that manufactures electronic
and integrated circuit products to implement the relevant ECMs. As part of the case study, an
energy audit was completed at the facility. The implementation of a number of the ECMs has
shown reductions in the daily kilowatt hours (kWh) consumptions. These reductions were
obtained through the implementation of a Shut Down Management program, which highlights
the importance of management in an energy conservation project.
The application of optimisation algorithms for energy efficient design was examined through
the optimisation of lighting design, using a Genetic Algorithm. It was found that a Genetic
Algorithm is applicable to lighting design but requires further refinement in order to generate
the most optimal design solutions.AFRIKAANSE OPSOMMING: Kostes verbonde aan energieverbruik is voortdurend besig om toe te neem.Dit is veral
relevant in Suid-Afrika waar ons tans ’n energiekrisis beleef. Hierdie toename in
energieverwante kostes plaas energie-afhanklike industrieë onder groot finansiële druk. Dit is
daarom belangrik om maniere te vind om energieverbruik meer effektief te maak sodat die
bedrag geld wat aan energieverwante kostes toegestaan word, verminder kan word.
Effektiewe energieverbruik by ’n fasiliteit is kritiek en om hierdie effektiwiteit te verbeter
behoort ’n energiebestuursprogram by die fasiliteit geïmplimenteer te word. ’n Belangrike
komponent van energiebestuursprogramme is die bepaling van die huidige energieverbruik
en dit word gebruik om die areas te identifiseer waar moontlike verbeteringe aangebring kan
word. Die energieverbruik word bepaal deur ’n energie-oudit. Nadat die energie-oudit voltooi
en die energiebesparingsmetodes bepaal is, moet hierdie metodes by die fasiliteit
geïmplementeer word.
Hierdie studie probeer vasstel hoe bedryfsingenieurswesemetodes ‘n groter rol kan speel in
die proses om Suid-Afrika meer energie-effektief te maak. Navorsing is gedoen oor
energiebesparingsmetodes wat in verskillende areas en vir verskillende toerusting in
fasiliteite geïmplementeer word. Hierdie inligting is daarna vergelyk met
bedryfsingenieurswesemetodes om juis die moontlike verhouding tussen hierdie twee tipe
metodes te identifiseer.
Analises was gedoen in bedryfsingenieurswese en energie-effektiwiteitskorpusse met die
gebruik van die ‘Content Analysis Toolkit’ program. Belangrike onderwerpe en
verwantskappe tussen hierdie onderwerpe in die korpusse is identifiseer om sodoende
korrelasies tussen die bedryfsingenieurswese- en energie-effektiwiteitsveld uit te lig. Die
mees betekenisvolle korrelasies was tussen statistiese metodes en verskeie energieeffektiwiteitsonderwerpe
identifiseer.
’n Gevallestudie is by ’n maatskappy in die Wes-Kaap wat geïntegreerde elektroniese
stroombane vervaardig gedoen, om die relevante energiebesparingsmetodes te
implementeer. ’n Energie-oudit is as deel van die gevallestudie by die fasiliteit gedoen. Die
aantal energiebesparingsmetodes wat wel geïmplementeer is, het ’n verlaging in die kilowatture
(kWh) teweeggebring. Hierdie verlagings is verkry deur die implementering van ’n
afskakelingsbestuursprogram wat die belangrikheid van bestuur in ’n
energiebesparingsprogram uitlig.
Die toepaslikheid van optimiseringsalgoritmes vir energie-effektiewe ontwerp is getoets deur
die optimisering van ’n liguitlegontwerp met behulp van ’n genetiese algoritme. Daar is
gevind dat ’n genetiese algoritme wel toegepas kan word, maar dat dit verbeteringe benodig