4 research outputs found
KRIITTISTEN LAITTEIDEN ENNAKKOHUOLTO
No full textTIIVISTELMÄ
Oulun ammattikorkeakoulu
Kone ja tuotantotekniikan tutkinto-ohjelma
Tekijä: Samuli Pietarila
Opinnäytetyön nimi: Kriittisten laitteiden ennakkohuolto
Työn ohjaajat: Kari Penson ja Kai Jokinen
Työn valmistumislukukausi ja -vuosi: Syksy 2016 Sivumäärä: 45 + 5 liitettä
Opinnäytetyö on tehty Paroc Oy Ab Oulun kivivillatehtaalle. Työn tavoitteena oli löytää prosessilinjan alkupään osalta kriittisimmät laitteet sekä kehittää näiden laitteiden toimintavarmuutta ennakoivalla kunnossapidolla. Toimintavarmuutta kehitettiin selvittämällä kriittisten laitteiden varaosasaatavuudet, huollettavuudet sekä mahdolliset korvaavat laitemuutokset.
Huoltokohteet kartoitettiin kriittisyysanalyysin, tehtaan historiadokumenttien sekä laitevalmistajan toimittamien laitedokumenttien pohjalta. Tarkasteltavana alueena oli prosessilinjan alkupää, joka käsittää prosessin laitteistosta vanhinta laitekantaa. Kriittisille laitteille luotiin ennakoivat kunnonvalvonta- ja huolto-ohjelmat.
Työn tuloksena selvisi prosessin alkupään vikaherkimmät laitteet. Kriittisille laitteille kehitettiin ennakkohuolto-ohjelma, selvitettiin varaosien saatavuus sekä löydettiin korvaavat uudenaikaiset laitteet. Suurimmat haasteet tulivat tehtaan laitehistorian dokumentoinnin vajavaisuudesta, jolloin laitteiden vikahistoria on haastavaa selvittää jälkeenpäin.ABSTRACT
Oulu University of Applied Sciences
Mechanical and production engineering
Author: Samuli Pietarila
Title of thesis: Preventive Maintenance of Critical Equipment
Supervisors: Kari Penson and Kai Jokinen
Term and year when the thesis was submitted: Autumn 2016 Pages: 45 + 5 appendices
This thesis was made for Paroc Oy Ab Oulu stone wool factory. The objective was to identify the critical equipment at the beginning of the process line and to improve the reliability of such equipment with preventive maintenance. Reliability was developed by studying the availability of the spare parts of critical equipment as well as the serviceability, and potential compensatory devices of critical equipment.
Service points were mapped by using criticality analysis, on the basis of the documents provided by the machine history and the documents provided by the manufacturer. The focus of the examination was on the beginning of the process line where the machinery is oldest. Predictive condition monitoring and maintenance programs were created for the critical equipment.
The results showed the most fault-sensitive devices at the beginning of the process. A preventive maintenance program was developed for the critical equipment, the availability of spare parts was examined and modern replacement devices were found. The biggest challenges came from the incomplete documentation of the history of the devices. When the documentation is incomplete the fault history of the equipment is difficult to find out afterwards
Towards a 3D Scanning/VR-based Product Inspection Station
No full textQuality control of products plays an important role in various stages of the manufacturing process. In particular the final control of the quality of a product before being shipped to a customer is crucial for maintaining customer satisfaction and avoiding costly recalls. Automating quality inspection and integrating it into a seamless Industry 4.0 setting is therefore an important topic in factory automation.We present early work towards an automated product inspection station. Our inspection station features a 3D scanner as well as a Virtual Reality headset for remote human inspection. In addition, our concept provides for automated analysis of scans in the cloud. We present an architectural concept as well as an early prototype.Peer reviewe
Использование смеси биоугля и торфа для снижения интенсивности запаха от животноводческих ферм
No full textAbstract. Odour from agriculture causes local nuisance to the neighborhood. Litter and cover materials can be used in animal housing and in storage of manure to reduce the odour problem. The use of biochar as a covering for animal manures is a new innovation and enhances the possibility to minimize the emissions from animal farms. (Research purpose) To study the possibility of using a mixture of biochar and peat as a manure covering, in order to reduce the intensity of odor on livestock farms. (Materials and methods) The potential of a mixture of biochar and peat for the odour control was tested in a laboratory study. A 10 cm layer of fresh mink manure was placed on the bottom of a 5 liter test bucket and the manure was covered with biochar-peat mixture (mixed in 50/50 ratio by volume) using five different covering thicknesses. Uncovered manure was used as a reference. The odour emission was measured with an olfactometric method that is based on odour sensation of a person. Also the character of the odour was described. (Results and discussion) The results show that a biochar-peat covering of at least 3 cm is able to considerably reduce the odour from the manure. The character of the odour was at first peat-like for all covered buckets but with thin coverings it was changed to more manure-like after 2 days. The odour from buckets with thicker covers remained peat-like during the whole testing period. (Conclusion) It is recommended to apply a biochar-peat covering to neutralize ammonia and the unpleasant manure odour on livestock farms. The author has shown that the frequency of use and the thickness of a covering layer depend on the ambient temperature; therefore, it is not necessary to cover manure in winter.Реферат. Неприятный запах от сельскохозяйственных животноводческих предприятий доставляет определенные неудобства расположенным поблизости жилым и производственным объектам. Чтобы уменьшить проблему с запахом, в животноводческих помещениях и при хранении навоза могут быть использованы для укрытия различные материалы, включая подстилочные. (Цель исследования) Изучить возможность использования смеси биоугля и торфа в качестве присыпки для навоза, чтобы снизить интенсивность запаха на звероводческих фермах. (Материалы и методы) В лабораторных условиях исследовали свойства смеси биоугля и торфа для нейтрализации запаха. Свежий навоз от норок слоем 10 сантиметров поместили на дно 5-литрового тестового резервуара. Покрыли его смесью биоугля и торфа (в соотношении 50/50 по объему). Использовали 5 вариантов толщины покрытия. Непокрытый смесью навоз приняли за контрольный образец. Интенсивность запаха определяли обонятельным методом. Описали характер запаха. (Результаты и обсуждение) Выявили, что покрытие навоза смесью биоугля и торфа толщиной не менее 3 сантиметров способно значительно уменьшить запах. Характер запаха был сначала торфоподобным во всех покрытых смесью резервуарах, но при тонком покрытии через 2 дня он становился более похожим на запах навоза. Запах от резервуаров с покрытием большей толщины оставался торфоподобным в течение всего периода исследования. (Выводы) Рекомендовали применять присыпку из биоугля и торфа для нейтрализации аммиака и неприятного запаха от навоза на зверофермах. Показали, что частота применения и толщина слоя смеси зависят от температуры окружающей среды, зимой присыпать навоз не требуется
