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115 Uppsatser om Sjöholmen - Sida 2 av 8

Funktionaliteten i skogsmaskiners GIS-system

Holmen Skog is currently using a GPS-program called TraktInfo, originally developed within the company. They are now planning to switch to a new GPSprogram or allowing the contractors to buy other programs available from the logging equipment manufacturers. To be able to offer this flexibility, Holmen Skog needs to obtain information about the features offered by the different manufacturers in their specific programs, and also when the manufacturers are planning to start selling programs adapted to the new standard called StanFord2010. According to the study, the manufacturers are hesitant to StanFord2010 and there has also been a lack of clear signals from the customers and clients about what kind of different new features to include in the programs. The feature most frequently used by forest machine operators today is the option to keep record of the harvester?s path by creating a ?log plot?. This feature was not used to its full potential however, since only one out of eight of the forwarders included in the study had computers that were compatible with the harvester?s computer.

Indelning av trakter inför gallring på Holmen Skog : en utvärdering av svårigheter och möjligheter

A common goal in practical forest management is to maximize the yield, measured in economical terms. When a forest stand is thinned a so called inoptimality loss can arise due to non-optimal decisions. This means that the selected management schedule results in a lower net present value than the optimal one which lowers the profitability for the forest owner. Holmen Skog uses the term tract which means an aggregation of stands made before a management action. A tract should be delineated in different tract parts in connection with pre-thinning planning if there is different bearing capacity within the tract, different thinning grades should be used or if the tract contains a weaker part that should not be thinned.

Planering av väginvesteringar :

The problems around and the planning of wood flow is some of the most complex issues in the forest-sector. The experience and overview of the single employees is crucial for the possibility of correct tactical and economical decision-making. The increasing demand of savings and shorter reaction-times with greater flexibility in the wood-supply-chain, makes solutions and aids for improved effectiveness in the work and processes according to wood-flow urgent. Holmen Skog is starting to develop a new forest-road-management-system. The system will facilitate the work according to construction, improvements and updating the standard of roads.

Uppföljning av system för vägentreprenörer i skogen

Holmen Skog is one of the largest forestry companies in Scandinavia and they depend heavily on a large network of forest roads for production and logistics in connection to their forestry operations. The company recently introduced a new system for planning of road management. The system will also be developed with the intention to facilitate the monitoring of actions performed by road contractors. This report will provide information to support future decisions regarding further development of the system, after its introduction. In addition to a presentation of results from interviews, the report also provides a smaller study of the different subjects associated with roads, process work and process development. The study is largely based on interviews with road contractors that perform work for Holmen Skog today.

Intäktsförluster på grund av minskad volymproduktion orsakad av älg- och kronviltsbete i Kolmården

Det har länge forskats på hur klövviltsbete påverkar skogen och framförallt de skador som uppstår vid bete. Av olika anledningar har dock ingen konsensus kring betesskadeproblematiken uppnåtts. Holmen Skog innehar ett större sammanhängande skogsområde i Kolmården, beläget norr om Norrköping, där betesskador på skogen har varit i fokus de senaste åren. Tidigare har skogsnäringen mestadels befarat kvalitetsnedsättningar på betesskadade träd men nyligen har studier kunnat konstatera signifikanta volymproduktionsförluster. I detta arbete söker vi svar på hur volymproduktionen i tallungskogar i Kolmården påverkas av älg- och kronhjortsbete. Vi har beräknat volymförändringen i skogsbeståndet över 20 år med hjälp av en modell från Riksskogstaxeringen som tar hänsyn till bonitet, medelhöjd, tallandel, skadefrekvens samt om gallring utförts eller ej. Den genomsnittliga årliga volymproduktionen jämfördes mellan dagens beräknade svåra skadenivå på 14,1 % och en hypotetisk 0 %- ig skadenivå och således erhölls en minskning i genomsnittlig årlig volymproduktion. Den årliga volymproduktionsförändringens värde i kronor har beräknats med ett genomsnittligt pris för leveransvirke av barrmassaved.

Styrglapp i produktionsföretaget : En fallstudie av Holmen AB

Uppsatsen utgår från resultatet av Holmen AB:s medarbetarenkät Holmen Inblick 2011 i vilken 55 till 65 procent av cheferna uppgav att de känner sig delaktiga i mål, budget respektive verksamhetsplan. Enkätens resultat avviker från ledningens önskade utfall, vilket i uppsatsen omnämns som ett styrglapp.Studiens syfte är att analysera vad som orsakar ett styrglapp genom att klarlägga varför och till vilken grad chefer i Holmen är medvetna om, och kan påverka, mål, budget och verksamhetsplan. Genom att förstå detta kan de åtgärder som krävs för att reducera styrglappet identifieras av koncernledningen. Studien avgränsas till att analysera hur organisationens struktur, kontroll och kommunikation påverkar styrglappet.I studien används en kvalitativ intervjumetod där 17 chefer på två bruk i Holmens koncern har intervjuats individuellt. Därtill intervjuades platschefen för respektive bruk samt Holmens HR-direktör.

Utvärdering av produktionsledarens användning av Holmen Skogs datorbaserade stödsystem vid operativ planering av avverkning

The forestry companies? operational planning process is these days dependent on reliable, efficient and user-friendly computer-based support systems. This study is an evaluation of Holmen Skog's current computer-based systems. The aim of this study is to: ? investigate the work pattern of the production managers when using the information system to plan the harvesting operation; ? investigate the efficiency and user friendliness of the information system with the different work patterns and to find the strengths, weaknesses and bottlenecks in the current system; ? find out if the type of object, the volume, the area of the harvesting object affects the time and work pattern; ? examine how this type of study is met by the employees and what factors that is critical to avoid feelings of intrusion. The conclusions of the study were: ? there is a large variation between the work patterns of the production managers and the time spend to perform the operational planning; ? the mainframe computer system used by Holmen Skog is clear, has short response times, is robust and conveys relevant information; ? the computer systems are however divided in many subsystems.

Flerträdshantering i slutavverkning

Flerträdshantering har sedan länge främst förekommit i gallringar och vid skörd av biobränslesortiment. På senare år har svenska och kanadensiska forskare även gjort tidsstudier på tekniken i slutavverkningar där resultaten visar på en ökning av produktiviteten. Inom Holmen Skog har tekniken använts i slutavverkningar under ett par års tid men kunskap om vilken typ av skog den bör användas i och potentialen är okänd. Syftet med denna studie var att kvantifiera potentialen för flerträdshantering i slutavverkning inom Holmen Skog och beskriva de skogliga förutsättningarna. Det gjordes även en skattning av produktivitetsökningen och en maskinkostnadskalkyl för flerträdshanteringens effekter på skördarens drivningskostnad. Studien utfördes enligt följande: Stamnotor extraherades från slutavverkade trakter där flerträdshantering användes.

Kundkrav på biobränsle

Detta examensarbete är utfört i samråd med Holmen Skog. Holmen Skog är ett skogsbolag som ansvarar för råvaruanskaffningen till Holmenkoncernens svenska produktions-anläggningar. I takt med biobränslemarknadens tillväxt har Holmen Skog en ambition att slå sig in på denna marknad och bli en framstående leverantör av biobränsle. Tilltänkta kunder är främst företag med anläggningar som producerar kraft- och fjärrvärme. Genom förbränning av biobränslen framställer och genererar dessa företag värme och el till samhället.

Bevarande av naturvärdesträd i enlighet med FSC och Holmen Skogs naturvårdspolicy :

In the end of 1998 the company Holmen Skog AB was certified accordint to the FSC system with an area of 1 036 000 hectare. After that Holmen Skog AB has been working actively with the nature conservation in the forestry. In order to control the quality of the company?s nature conservation in final fellings they started a yearly inventory which is called BAKRUS (Judgement of ecological and culture care in relations to policies for a persevering silviculture). After 1999 the control was expended to include all actions in the forest.

Mekaniskt snytbaggeskydd

Insecticides will be removed from Swedish forestry, at present insecticides are used to treat our seedlings to avoid them from being attacked by pine weevils. With the forthcoming ban on insecticides alternative protective measures will have to be tested. Holmen Forest Ltd has aimed to find an alternative and have developed a mechanic pine weevils protection accessory as well as a new concept on planting pipes. Studies have been conducted on the behalf of Holmen Forest Ltd to see how planting with the newly developed mechanical protectors and plant pipe stands up against the conventional methods used today. The study was conducted over a three week period. Three factors were compared regarding planting quality including i) pressure around the plant, ii) the depth the plant ended up in, iii) plant angle. Mechanical plant pipes were used in the study, and where tested like a one-handed and a two-handed pipe. The study concludes that further development is needed for the mechanic plant protector to live up to the speed and quality of conventional methods.

Färsk ved till Hallstaviks pappersbruk :

Hallstaviks papermill is an industry plant within Holmen Paper. Hallstavik is a mechanical mill and produce newspaper and journal paper. During year 2000, Hallstavik used approximate 1.200 m3f spruce, either as logs or chips from sawmills. Due to that the production is running continuously the mill also needs raw material at the same rate. At some periods the supply of raw material cannot keep up pace.

Utvärdering av CTI på virkesfordon : ? CTI-projekt Holmen Skog/Örnfrakt 2005-2006

The low bearing capacity of roads during the spring thaw and periods in the autumn leads every year to increases costs for Holmen Skog. To reduce costs and increase accessibility Holmen Skog decided to install and test a CTI-system. Central tire inflation (CTI) is a system that makes it possible to monitor and vary a vehicle?s tire inflation pressures from the cabin, while the vehicle is in motion. When tire pressures are reduced, the area of the contact surface between the tire and the road increases, thus reducing the ground pressure. The purpose of this study was to evaluate the CTI-equipped vehicle and analyze if the CTI technology is economical defensible during the thaw 2005.

Den geografiska, funktionella och processorienterade organisationen : en fallstudie av Holmen Skog, SCA Skog och Sydkraft Vattenkraft

This thesis reports on a case study of two different organisational forms in the Swedish forest industry; the geographic and the functional organisation. The work in the geographic organisation is carried out within districts under the supervision of an overall responible district manager, where as in the functional organisation the work has been divided into functions headed by function managers. Forest magement, logging and wood purchases are examples of such functions. The general idea of the functional organisation is having the functions working over a larger geographic unit, without subdividing district boundaries of the region. Also a third organisational form of current interest for the forest industry; the process orientated organisation, is analyzed in the case study. Here, a company outside the forest industry has been analyzed, since no forest company was considered to have made as much progress of changing organisation to process orientation. In the report I present the results from qualitative interviews, where I give the reader a picture of the motives behind each organisational form, what the form implies for some of the company?s interested parties and the organisations? views on future organisational development.

Contortatallens roll för virkesförsörjningen på Holmen Skog, Region Iggesund : konsekvensanalys av fyra hushållningsstrategier för contortatall

Large areas of Lodgepole pine (Pinus contorta var. latifolia) were planted in the 1970s - and '80s. The purpose of the fast-growing species was to increase growth and with short rotation periods allow a rapidly increased harvest level. Today a large proportion of the young forests owned by Holmen Skog, Iggesund are covered by Lodgepole pine and an active forest management is required to spread the harvested volume over time which is desirable by a market perspective. The purpose of this essay is to investigate the possibility of spreading the harvested volume of Lodgepole pine over time.

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