Effect of Material Recycling on the Feasibility of Solid Recovered Fuel Fired Power Plant

This master’s thesis examines the effects of increased material recycling on different waste-to-energy concepts. With background study and a developed techno-economic computational method the feasibility of chosen scenarios with different combinations of mechanical treatment and waste firing technologies can be evaluated. The background study covers the waste scene of Finland, and potential market areas Poland and France. Calculated cases concentrate on municipal solid waste treatment in the Finnish operational environment. The chosen methodology to approach the objectives is techno-economic feasibility assessment. It combines calculation methods of literature and practical engineering to define the material and energy balances in chosen scenarios. The calculation results together with other operational and financial data can be concluded to net present values compared between the scenarios. For the comparison, four scenarios, most vital and alternative between each other, are established. The baseline scenario is grate firing of source separated mixed municipal solid waste. Second scenario is fluidized bed combustion of solid recovered fuel produced in mechanical treatment process with metal separation. Third scenario combines a biomaterial separation process to the solid recovered fuels preparation and in the last scenario plastics are separated in addition to the previous operations. The results indicated that the mechanical treatment scenarios still need to overcome some problems to become feasible. Problems are related to profitability, residue disposal and technical reliability. Many uncertainties are also related to the data gathered over waste characteristics, technical performance and markets. With legislative support and development of further processing technologies and markets of the recycled materials the scenarios with biomaterial and plastic separation may operate feasibly in the future.

Feasibility of replacing multiple ADSL connections with Multi-Dwelling Access

This final project was made for the Broadband/Implementation department of TeliaSonera Finland. The question to be examined is if the operator should replace multiple ADSL connections implemented over a leased line with Multi-Dwelling access based on an Ethernet/Optical Fibre access network. The project starts with describing the technology related to these access network solu-tions and presents the technology that is used in TeliaSonera Finland's access network. It continues from the technology to describe the problem with some of the ADSL implemen-tations of TeliaSonera. The problem is the implementations done over a leased line that can cost TeliaSonera over years as much as a possible investment to extend network when there is several lines leased to the same building. The project proposes a Multi-Dwelling access as a solution to this problem and defines the circumstances when to use it. After a satisfactory solution has found the project takes a view how implementation of the solution might alter the network and a new problem is found. When used commonly to replace need of ADSL implementation Multi-Dwelling access would significantly increase optical cable congestion near operators POP. As a final deed this project also proposes a technical change to existing way to implement multi-dwelling access with EPON technology.

A Feasibility Study of a Pelleting Plant as an Option for By Product Upgrading in Wood-Processing Industry

Tämän kannattavuustutkimuksen lähtökohtana oli se, että Yhtyneet Sahat Oy:n Kaukaan sahalla ja Luumäen jatkojalostuslaitoksella haluttiin selvittää pellettitehtaan kannattavuus nykyisessä markkinatilanteessa. Tämä työon luonteeltaan teknis-taloudellinen selvitys eli ns. feasibility study. Pelletöintiprosessi on tekniikaltaan yksinkertainen eikä edellytä korkea teknologian laitteita. Toimiala on maailmanlaajuisesti varsin uusi. Suomessa pellettimarkkinat ovat vielä pienet ja kehittymättömät, mutta kasvua on viime vuosina tapahtunut. Valtaosa kotimaan tuotannosta menee vientiin. Investoinnin laskentaprosessissa saadut tuotannon alkuarvot sekä kustannusrakenteen määrittelyt ovat perustana varsinaisille kannattavuuslaskelmille. Laskelmista on selvitetty investointeihin liittyvät yleisimmät taloudelliset tunnusluvut ja herkimpiä muuttujia on tutkittu ja pohdittu herkkyysanalyysiä apuna käyttäen.

Introducing massively parallel computers into operational weather forecasting

Numerical weather prediction and climate simulation have been among the computationally most demanding applications of high performance computing eversince they were started in the 1950's. Since the 1980's, the most powerful computers have featured an ever larger number of processors. By the early 2000's, this number is often several thousand. An operational weather model must use all these processors in a highly coordinated fashion. The critical resource in running such models is not computation, but the amount of necessary communication between the processors. The communication capacity of parallel computers often fallsfar short of their computational power. The articles in this thesis cover fourteen years of research into how to harness thousands of processors on a single weather forecast or climate simulation, so that the application can benefit as much as possible from the power of parallel high performance computers. The resultsattained in these articles have already been widely applied, so that currently most of the organizations that carry out global weather forecasting or climate simulation anywhere in the world use methods introduced in them. Some further studies extend parallelization opportunities into other parts of the weather forecasting environment, in particular to data assimilation of satellite observations.

Supply chain integration: studies on linking customer responsiveness and operational efficiency in logistics policy planning

Abstract The research problem in the thesis deals with improving the responsiveness and efficiency of logistics service processes between a supplier and its customers. The improvement can be sought by customizing the services and increasing the coordination of activities between the different parties in the supply chain. It is argued that to achieve coordination the parties have to have connections on several levels. In the framework employed in this research, three contexts are conceptualized at which the linkages can be planned: 1) the service policy context, 2) the process coordination context, and 3) the relationship management context. The service policy context consists of the planning methods by which a supplier analyzes its customers' logistics requirements and matches them with its own operational environment and efficiency requirements. The main conclusion related to the service policy context is that it is important to have a balanced selection of both customer-related and supplier-related factors in the analysis. This way, while the operational efficiency is planned a sufficient level of service for the most important customers is assured. This kind of policy planning involves taking multiple variables into the analysis, and there is a need to develop better tools for this purpose. Some new approaches to deal with this are presented in the thesis.The process coordination context and the relationship management context deal with the issues of how the implementation of the planned service policies can be facilitated in an inter-organizational environment. Process coordination includes typically such mechanisms as control rules, standard procedures and programs, but inhighly demanding circumstances more integrative coordination mechanisms may be necessary. In the thesis the coordination problems in third-party logistics relationship are used as an example of such an environment. Relationship management deals with issues of how separate companies organize their relationships to improve the coordination of their common processes. The main implication related to logistics planning is that by integrating further at the relationship level, companies can facilitate the use of the most efficient coordination mechanisms and thereby improve the implementation of the selected logistics service policies. In the thesis, a case of a logistics outsourcing relationship is used to demonstrate the need to address the relationship issues between the service provider andthe service buyer before the outsourcing can be done.The dissertation consists of eight research articles and a summarizing report. The principal emphasis in the articles is on the service policy planning context, which is the main theme of six articles. Coordination and relationship issues are specifically addressed in two of the papers.

Uusien rajapintojen vaikutus Nokia TETRA –rajapintapalvelimen arkkitehtuuriin

Nokia TETRA –järjestelmä on digitaaliseen tekniikkaan pohjautuva radiopuhelinjärjestelmä, joka on tarkoitettu erityisvaatimuksia omaavien organisaatioiden ammattikäyttöön. Sen tyypillisiä käyttäjiä ovat erilaiset viranomaiset, kuten poliisi, palo- ja pelastuslaitos sekä rajavartiolaitos. Se perustuu avoimeen TETRA-standardiin, joka määrittelee tärkeimmät palvelut ja rajapinnat tiettyjen verkkoelementtien välillä. TETRA-järjestelmän käyttöpaikkatyöasemat ja palvelimet perustuvat kaikki samaan Nokia TETRA –rajapintapalvelimen arkkitehtuuriin. Käyttöpaikat tarjoavat tehokkaat toiminnot verkon operatiiviseen käyttöön ja hallintaan. Palvelimet puolestaan tarjoavat ohjelmointirajapintansa kautta kolmansille osapuolille mahdollisuuden luoda TETRA-järjestelmän palveluita käyttäviä sovelluksia. Työn tavoitteena oli tutkia uusien rajapintojen soveltuvuutta sekä selvittää niiden vaikutusta Nokia TETRA –rajapintapalvelimen arkkitehtuuriin. Ensin kartoitettiin nykyisen arkkitehtuurin ongelmat ja puutteet äänikommunikaatioon käytetyssä tiedonsiirrossa, ja äänikommunikaatiossa käyttäjään päin. Näiden ratkaisemiseksi tutkittiin uusia rajapinta-vaihtoehtoja. Parhaiten soveltuvista vaihtoehdoista muodostettiin ratkaisu, jonka vaikutus uuden sukupolven arkkitehtuuriin selvitettiin.

Identification and Management of Operational Risks in IT Organization of Financial Service Provider

Työn tavoitteena on tunnistaa toiminnallisia riskitekijöitä rahoituspalveluita tarjoavan yrityksen IT-organisaatiossa sekä löytää arkipäiväisiä keinoja hallita näitä riskejä. Työssä riskejä on myös tarkasteltu mahdollisen ulkoistuksen yhteydessä. Fuusiot ovat yleisiä rahoitusalan yrityksissä. Yhteenliittymien tuloksena yritysten IT-arkkitehtuuri voi olla monimutkainen ja kulttuurierot yrityksessä suuria. Synergia- ja mittakaavaetuja saadakseen yritys keskittää toimintojaan ja IT-ratkaisujaan. Riskien tunnistaminen on riskienhallintaprosessin tärkein vaihe. Tässä tutkimuksessa riskit ja riskitekijät tunnistettiin itsearvioinnin avulla kysymyssarjoja hyväksikäyttäen. Monet riskitekijät liittyivät sisäisen valvonnan ja seurannan puutteisiin. Myöhemmin näille riskeille pohdittiin työryhmässä käytännönläheisiä hallintakeinoja. Yritys voi siirtää tai jakaa IT -riskejä ulkoistamalla. Ulkoistaminen voi kuitenkin tuoda mukaan myös uusia riskitekijöitä. Ennen ulkoistamispäätöstä yrityksen sisäisten prosessien ja organisaation on oltava järjestyksessä, jotta sopimuksen kannattavuutta voidaan verrata luotettavasti saman palvelun tuottamiseen sisäisesti.

Operational Knowledge in Process Design

Työn tarkoituksena on selvittää, miten käyttötietämystä hyödynnetään prosessisuunnittelussa. Tavoitteena on löytää keinoja parantaa käyttötietämyksen hallintaa suunnitteluprosessin aikana ja selvittää, vaikuttaako tämä prosessisuunnittelun laatuun.Prosessisuunnittelun laatua arvioidaan seitsemällä kriteerillä, jotka ovat investointikustannukset, käyttökustannukset, turvallisuus, ympäristövaikutukset, käytettävyys, innovatiivisuus ja aikataulu. Suunnitteluprosessi jaetaan kolmeen vaiheeseen: esisuunnitteluun, perussuunnitteluun ja detaljisuunnitteluun. Prosessisuunnittelua, investointiprojektia, prosessisuunnittelun laatukriteerejä, suunnitteluprosessin eri vaiheita ja käyttötietämyksen luokittelua tarkastellaan yleisesti. Työssä selvitettiin käyttötietämyksen hyödyntämistä Kemiralla. Aluksi muotoiltiin yleisiä väittämiä käyttötietämyksen hyödyntämisestä Kemiran ulkopuolisten eri alojen asiantuntijoiden haastattelujen perusteella. Tämän jälkeen Kemiran prosessisuunnittelijat arvioivat väittämiä. Arvioiden perusteella tehtiin johtopäätöksiä yleisesti käyttötietämyksen hyödyntämisestä prosessisuunnittelussa. Seuraavaksi haastateltiin kahdessa erityyppisessä case-projektissa mukana olleita henkilöitä ja muotoiltiin yleiset väittämät näihin projekteihin sopiviksi. Projekteissa mukana olleet henkilöt arvioivat väittämiä, ja näiden arvioiden perusteella projekteja vertailtiin keskenään. Lopussa esitetään johtopäätökset kaikkien väittämien arvioiden perusteella. Johtopäätöksenä voidaan todeta, että käyttötietämystä voidaan hyödyntää kaikissa suunnittelun vaiheissa, mutta paras hyöty saadaan perus- ja detaljisuunnittelussa. Käyttötietämyksellä voidaan vaikuttaa joihinkin prosessisuunnittelun laatukriteereihin, kuten esimerkiksi käytettävyyteen ja turvallisuuteen enemmän kuin muihin. Kemiralle suositellaan nykyisten tiedonhallintamenetelmien kehittämistä, jotta käyttötietämyksen saatavuus ja sen siirtäminen paranisi. Pr

Operational Reliability Analysis of a Three-Tiered Thin-Client ERP-system in an International Corporate Environment

Internationalization and the following rapid growth have created the need to concentrate the IT systems of many small-to-medium-sized production companies. Enterprise Resource Planning systems are a common solution for such companies. Deployment of these ERP systems consists of many steps, one of which is the implementation of the same shared system at all international subsidiaries. This is also one of the most important steps in the internationalization strategy of the company from the IT point of view. The mechanical process of creating the required connections for the off-shore sites is the easiest and most well-documented step along the way, but the actual value of the system, once operational, is perceived in its operational reliability. The operational reliability of an ERP system is a combination of many factors. These factors vary from hardware- and connectivity-related issues to administrative tasks and communication between decentralized administrative units and sites. To accurately analyze the operational reliability of such system, one must take into consideration the full functionality of the system. This includes not only the mechanical and systematic processes but also the users and their administration. All operational reliability in an international environment relies heavily on hardware and telecommunication adequacy so it is imperative to have resources dimensioned with regard to planned usage. Still with poorly maintained communication/administration schemes no amount of bandwidth or memory will be enough to maintain a productive level of reliability. This thesis work analyzes the implementation of a shared ERP system to an international subsidiary of a Finnish production company. The system is Microsoft Dynamics Ax, currently being introduced to a Slovakian facility, a subsidiary of Peikko Finland Oy. The primary task is to create a feasible base of analysis against which the operational reliability of the system can be evaluated precisely. With a solid analysis the aim is to give recommendations on how future implementations are to be managed.

Improvement of Operational Efficiency effectiveness (OEE) using Six Sigma DMAIC Methodology — Case Bottomer line AD2378

Overall Equipment Effectiveness (OEE) is the key metric of operational excellence. OEE monitors the actual performance of equipment relative to its performance capabilities under optimal manufacturing conditions. It looks at the entire manufacturing environment measuring, in addition to the equipment availability, the production efficiency while the equipment is available to run products, as well as the efficiency loss that results from scrap, rework, and yield losses. The analysis of the OEE provides improvement opportunities for the operation. One of the tools used for OEE improvement is Six Sigma DMAIC methodology which is a set of practices originally developed to improve processes by eliminating defects. It asserts the continuous efforts to reduce variation in process outputs as key to business success, as well as the possibility of measurement, analysis, improvement and control of manufacturing and business processes. In the case of the Bottomer line AD2378 in Papsac Maghreb Casablanca plant, the OEE figures reached 48.65 %, which is below the accepted OEE group performance. This required immediate actions to achieve OEE improvement. This Master thesis focuses on the application of Six Sigma DMAIC methodology in the OEE improvement on the Bottomer Line AD2378 in Papsac Maghreb Casablanca plant. First, the Six Sigma DMAIC and OEE usage in operation measurement will be discussed. Afterwards, the different DMAIC phases will allow the identification of improvement focus, the identification of OEE low performance causes and the design of improvement solutions. These will be implemented to allow further tracking of improvement impact on the plant operations.

Vaatimustiedon hallinta rakennusteollisuuden tuotanto- ja suunnitteluyrityksessä

Diplomityön ensisijaisena tavoitteena on luoda yleinen vaatimustiedon hallinnan malli, jonka avulla yrityksen toimintaympäristössä vaikuttavat vaatimukset voidaan tunnistaa ja kommunikoida koko organisaation tietoisuuteen. Kohdeyrityksen näkökulmasta mielenkiinto kohdistuu erityisesti käytännön työn kautta saataviin lopputuloksiin. Tavoitteena on luoda yritykseen pohja vaatimustiedon hallinnalle sekä samalla kehittää sähköistä vaatimustietojärjestelmää. Diplomityö on toteutettu konstruktiivisena tutkimuksena. Tutkittavasta aiheesta on saatavilla teoriatietoa hyvin rajallisesti. Tämän vuoksi vaatimustiedon hallinnan malli toteutetaan vahvasti käytännön työn havaintojen ja analysoinnin pohjalta. Lähtökohdaksi käytännön työlle esitellään laadunhallinnan, tiedonhallinnan sekä prosessien näkökulmia sekä perinteisiä vaatimusten hallinnan teorioita. Tiedot, joiden avulla valmis malli on luotu, kerättiin haastattelemalla yrityksen prosessien omistajia. Työn tuloksina esitellään vaatimustiedon hallinnan malli sekä yrityksessä saatuja käytännön työn lopputuloksia. Vaatimustiedon hallinnalla tarkoitetaan yrityksen toimintaympäristössä, prosesseissa sekä tuotteissa vaikuttavien vaatimusten saattamista organisaation tietoisuuteen mahdollisimman käyttäjäystävällisellä tavalla. Mallissa esiintyvät vaatimukset ovat sidosryhmien tai yrityksen itsensä ilmaisuja liittyen tuotteen tai palvelun ominaisuuksiin sekä suorituskykyyn. Valmis malli voidaan jakaa neljään eri vaiheeseen, jotka ovat suunnittelu ja esitutkimus, toteutus, käyttöönotto, sekä muutostenhallinta ja ylläpito. Laajimmillaan toteutettuna vaatimustiedon hallinta auttaa yritystä parhaiden käytäntöjen tunnistamisessa ja prosessien kehittämisessä, mahdollistaa tasalaatuisen toiminnan ja tuotteet sekä toimivan tiedon ja osaamisen hallinnan.

Feasibility Study and Market Review of Small Scale Bioenergy Heating Plants in North-West Russia

The paper is focused on feasibility study and market review of small scale bioenergy heating plants in the Russian North-West region. The main focus is effective and competitive usage of low-grade wood for heating purposes in the region. As example of economical feasibility estimation it was chosen the project of reconstruction of small scale boiler plant in Leningrad region that Brofta Oy is planning to implement the nearest time. It includes calculation the payback time with and without interest, the estimation of probable investments, the evaluation of possible risks and research on the potential of small scale heating plants projects. Calculations show that the profitability of this kind of projects is high, but payback time is not very short, because of high level of initial investments. Though, the development of small scale bioenergy heating plants in the region is considered to be the best way to solve the problems of heat supply in small settlements using own biomass resources.

The Effect of Operational Disturbances on Reliability and Operation Time Distribution of NCmachine Tools in FMS

This thesis concentrates on studying the operational disturbance behavior of machine tools integrated into FMS. Operational disturbances are short term failures of machine tools which are especially disruptive to unattended or unmanned operation of FMS. The main objective was to examine the effect of operational disturbances on reliability and operation time distribution for machine tools. The theoretical part of the thesis covers the fimdamentals of FMS relating to the subject of this study. The concept of FMS, its benefits and operator's role in FMS operation are reviewed. The importance of reliability is presented. The terms describing the operation time of machine tools are formed by adopting standards and references. The concept of failure and indicators describing reliability and operational performance for machine tools in FMSs are presented. The empirical part of the thesis describes the research methodology which is a combination of automated (ADC) and manual data collection. By using this methodology it is possible to have a complete view of the operation time distribution for studied machine tools. Data collection was carried out in four FMSs consisting of a total of 17 machine tools. Each FMS's basic features and the signals of ADC are described. The indicators describing the reliability and operation time distribution of machine tools were calculated according to collected data. The results showed that operational disturbances have a significant influence on machine tool reliability and operational performance. On average, an operational disturbance occurs every 8,6 hours of operation time and has a down time of 0,53 hours. Operational disturbances cause a 9,4% loss in operation time which is twice the amount of losses caused by technical failures (4,3%). Operational disturbances have a decreasing influence on the utilization rate. A poor operational disturbance behavior decreases the utilization rate. It was found that the features of a part family to be machined and the method technology related to it are defining the operational disturbance behavior of the machine tool. Main causes for operational disturbances were related to material quality variations, tool maintenance, NC program errors, ATC and machine tool control. Operator's role was emphasized. It was found that failure recording activity of the operators correlates with the utilization rate. The more precisely the operators record the failure, the higher is the utilization rate. Also the FMS organizations which record failures more precisely have fewer operational disturbances.

Economical and operational analysis of outsourced warehouse function

The target of the thesis was to find out has the decision to outsource part of Filtronic LK warehouse function been profitable. Furthermore, another thesis target was to demonstrate current logistics processes between TPLP and company and find out the targets for developing these processes. The decision to outsource part of logistical funtions have been profitable during the first business year. Partnership includes always business risks. Risk increases high asset specific investments. In the other hand investment to partnership increases mutual trust and commitment between parties. By developing partnership risks and opportunitic behaviour can be decreased. The potential of managing material and data flows between logistic service provider and company observed. By analyzing inventory effiency were highlighted the need for decreasing the capital invested to inventories. The recommendations for managing outsourced logistical funtions were established such as improving partnership, process development, performance measurement and invoice checking.