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Chainsaw Safety
QUICK CARDTM Chainsaw Safety Operating a chainsaw can be hazardous. Potential injuries can be minimized by using proper personal protective equipment and safe operating procedures. Before Starting a Chainsaw • Check controls, chain tension, and all bolts and handles to ensure that they are functioning properly and that they are adjusted according to the manufacturer’s instructions. • Make sure that the chain is always sharp and that the oil tank is full. • Start the saw on the ground or on another firm support. Drop starting is never allowed. • Start the saw at least 10 feet from the fueling area, with the chain’s brake engaged. Fueling a Chainsaw • Use approved containers for transporting fuel to the saw. • Dispense fuel at least 10 feet away from any sources of ignition when performing construction activities. No smoking during fueling. • Use a funnel or a flexible hose when pouring fuel into the saw. • Never attempt to fuel a running or HOT saw. Chainsaw Safety • Clear away dirt, debris, small tree limbs and rocks from the saw’s chain path. Look for nails, spikes or other metal in the tree before cutting. • Shut off the saw or engage its chain brake when carrying the saw on rough or uneven terrain. • Keep your hands on the saw’s handles, and maintain balance while operating the saw. • Proper personal protective equipment must be worn when operating the saw, which includes hand, foot, leg, eye, face, hearing and head protection. • Do not wear loose-fitting clothing. • Be careful that the trunk or tree limbs will not bind against the saw. -
Performance Analysis of Log Extraction by a Small Shovel Operation in Steep Forests of South Korea
Article Performance Analysis of Log Extraction by a Small Shovel Operation in Steep Forests of South Korea Eunjai Lee 1 , Sang-Kyun Han 2 and Sangjun Im 3,* 1 National Institute of Forest Science, Forest Technology and Management Research Center, 498 Gwangneungsumogwon-ro, Soheul-eup, Pocheon 11186, Korea 2 Department of Forestry and Landscape Architecture, Korea National College of Agriculture and Fisheries, 1515 Kongjwipatwji-ro, Deokjin-gu, Jeonju 54874, Korea 3 Department of Forest Sciences and Research Institute of Agriculture and Life Sciences, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea * Correspondence: [email protected]; Tel.: +82-2-880-4768 Received: 7 May 2019; Accepted: 11 July 2019; Published: 13 July 2019 Abstract: In South Korea, logs for low-value products, such as pulpwood and fuelwood, are primarily extracted from harvest sites and transported to roadside or landing areas using small shovels. Previous studies on log extraction, however, have focused on cable yarding operations with the goal of improving productivity on steep slopes and inaccessible sites, leaving small-shovel operations relatively unexamined. Therefore, the main objectives were to determine small-shovel extraction productivity and costs and to evaluate the impact of related variables on productivity. In addition, we developed a model to estimate productivity under various site conditions. The study took place in 30 case study areas; each area has trees with stems at a diameter at breast height ranging from 18 to 32 cm and a steep slope (greater than 15%). The areas ranged from 241 to 1129 trees per hectare, with conifer, deciduous, and mixed stands. -
Cable Yarding in North America and New Zealand: a Review of Developments and Practices
Subject review Cable Yarding in North America and New Zealand: A Review of Developments and Practices Rien Visser, Hunter Harrill Abstract Cable yarders have been an integral part of harvesting timber on steep terrain for over 150 years. They have developed from basic labour intensive steam powered winch operations to sophisti- cated and automated mechanised systems. While European yarder development has focused on relatively small but highly mobile machines operating with standing skyline configurations, the North American and Southern Hemisphere developments have tended towards larger, taller and more powerful machines capable of higher daily production. Two dominant North American brands, Madill and Thunderbird, produced over 3000 yarders and many of their machines continue to work today. Often working with 4 or 5 drums, they were able to develop and utilise an expansive range of rigging configurations to suit different extraction needs. Modern developments continue to focus on increasing production capability and cost-effective- ness suited to clear-cut plantation forestry. With safety becoming more paramount in terms of a licence to operate, a strong preference is given to fully mechanised systems. By definition, these are yarders with rigging systems that support grapple carriages, extracting timber that has been mechanically felled on steep slopes. While mechanical grapple carriages have long been combined with swing yarder systems, the further development of a motorised grapple carriage allows tower yarders to operate without choker-setters. Ergonomic improvements for the operator, long established in European machinery, are being integrated including cab design with greatly improved visibility and partially automated electric over hydraulic control systems. Logic would suggest that, over time, yarder developments will combine the strength and robustness of North American design and the finesse and automation of European design. -
Simulation of Harvester Logging Processing and Dynamic Driving Motion Using Unity3d
SIMULATION OF HARVESTER LOGGING PROCESSING AND DYNAMIC DRIVING MOTION USING UNITY3D Zhang Jianting1, Huang Qingqing1, Liu Jinhao1, Cheng Bowen1, Xie Danmu1 1 Beijing Forestry University Abstract: Modern forestry equipment is characterized by high power and high 2 .2 harvester driving condition data acquisition energy consumption , and the working environment is in complex plantation areas , which makes it difficult to conduct production practice and cognition practice, as well as related teaching work of equipment machinery , hydraulic actuators and electronic control systems . The loggingg harvester simulator is an important infrastructure means for modern forestry characteristics of higher education. Through the demonstration and operation of the system , it can play a key role in professional cognitive teaching and mechanical , electronic and hydraulic integrated forestry equipment production internship . It is a multiplier effect for students to quickly master the advanced production methods and improve their practical ability of forestry machinery . The system is based on the actual multifunctional breeding machine control system , and is equipped with simulation visual software compatible with the input and output signals of the control system . With this system software , it can simulate mechanical operation , control system interface debugging, forest logging , Simulated Driving Suit to Control a Virtual harvester hitting branches, making materials, etc. This paper focuses on the dynamic motion simulation platform sawing wood work and vehicles in Unity3D scene 2.3 Data export and processing was simulated and experimental testing, through a single scene Unity3D wood sawing and dynamic simulation of the vehicle can be achieved anywhere, detailing for forestry equipment Key simulation techniques for job simulation and driving scene reproduction. -
A Comparative Analysis of Two Cable Yarder Technologies Performing Thinning Operations on a 33 Year Old Pine Plantation: a Potential Source of Wood for Energy
energies Article A Comparative Analysis of Two Cable Yarder Technologies Performing Thinning Operations on a 33 Year Old Pine Plantation: A Potential Source of Wood for Energy Rodolfo Picchio 1,*, Rachele Venanzi 1, Nicolò Di Marzio 1, Damiano Tocci 1 and Farzam Tavankar 2 1 Department of Agricultural and Forest Sciences, University of Tuscia, 01100 Viterbo, Italy; [email protected] (R.V.); [email protected] (N.D.M.); [email protected] (D.T.) 2 Department of Forestry, Khalkhal Branch, Islamic Azad University, Khalkhal 56817-31367, Iran; [email protected] * Correspondence: [email protected] Received: 24 July 2020; Accepted: 14 October 2020; Published: 15 October 2020 Abstract: In central Italy, there are extensive European black pine (Pinus nigra Arn.) plantations which range from 30 to 60 years of age and where no thinning operations have been made. The main purpose of this study was to provide a comparative analysis of two cable yarder technologies (Maxwald, mobile pulley carriage and Savall, semi-automatic carriage), in terms of fuelwood production and cost, from the first thinning of a 33 year old plantation in slope areas of these plantations. The results showed that fuelwood production was cost-effective in both systems (Savall by 15.1 and Maxwald by 3 14.8 ¿ m− ), although the productivity of the Savall system was higher than the Maxwald system 3 1 (6.1 vs. 5.7 m h− ). The respect amounts of productivity have the potential to increase by 27% for the Savall yarder and 25% for the Maxwald yarder upon condition that the delay times are reduced to minimum level by proper training of workers, by a better organization, and planning of operations. -
Code of Practice for Wood Processing Facilities (Sawmills & Lumberyards)
CODE OF PRACTICE FOR WOOD PROCESSING FACILITIES (SAWMILLS & LUMBERYARDS) Version 2 January 2012 Guyana Forestry Commission Table of Contents FOREWORD ................................................................................................................................................... 7 1.0 INTRODUCTION ...................................................................................................................................... 8 1.1 Wood Processing................................................................................................................................. 8 1.2 Development of the Code ................................................................................................................... 9 1.3 Scope of the Code ............................................................................................................................... 9 1.4 Objectives of the Code ...................................................................................................................... 10 1.5 Implementation of the Code ............................................................................................................. 10 2.0 PRE-SAWMILLING RECOMMENDATIONS. ............................................................................................. 11 2.1 Market Requirements ....................................................................................................................... 11 2.1.1 General .......................................................................................................................................... -
Large Specalog for 521B/522B Track Feller Bunchers & Track Harvesters
521B/522B Track Feller Bunchers & Track Harvesters – ZTS (Zero Tail Swing) Power Train Operating Weights (without heads, standard counterweight) 521B/522B Track Feller Buncher Engine Model Cat® C9 ACERT™ 521B 27 501 kg 60,629 lb Gross Power 226 kW 303 hp 522B 32 528 kg 71,711 lb Track Harvester Configuration 521B 26 966 kg 59,450 lb 522B 31 993 kg 70,532 lb Cat 521B/522B Features Power Train The Cat C9 ACERT Tier 3 high torque engine provides excellent power, fuel economy, serviceability and durability. The Cat C9 ACERT is a dependable performer, while meeting all U.S. EPA emission standards. Hydraulics Closed Center hydraulic system with electronic programmable controls that produce excellent multi-function system uses; dedicated pilot, travel, implement and saw pumps. Operator Comfort The Cat purpose built forestry cab offers industry leading operator protection and comfort. Cab is designed and tested to meet 120% of machine operating weight, meets ROPS, FOPS, OPS, OR-OSHA and WCB regulations and standards. New ISO mounting system reduces noise and vibration, increasing operator comfort. Leveling System The Cat three (3) hydraulic cylinder tilting system is extremely durable and reliable, and is the only one in the industry to provide two way simultaneous function throughout the full range of tilting motion. Undercarriage The 521B/522B have a new D7 size undercarriage custom designed for reliable operation in tough harvesting conditions, from wet bottomlands to steep rocky slopes. Contents Power Train ..........................................................4 -
Engineering Safety Solutions
25 October 2017 ENGINEERING SAFETY SOLUTIONS Reducing the risk of falling from a Madill 124 swing yarder In a perfect world we strive to ELIMINATE risks to health and safety. As we know this is not always possible—either the tools or technology doesn’t exist or it will be financially unviable. So we are then required to take a closer look at how we could MINIMISE the risk. Options may include : • Substituting (totally or partially) the hazard that creates the risk with something of lesser risk, an example of this would be replacing manual felling with mechanized felling where possi- ble. • Isolating the hazard to prevent contact, an example of this would be temporary traffic con- trol when felling within two tree lengths of a road. • Implementing engineering controls, an example of this would be a cut-out or disable switch. These three types of controls are far more reliable than the next layer of controls…...that is rules and procedures, followed by the use of personal protective equipment. This layer of controls is prone to human failure. Engineering controls or engineering safety solutions is the subject of this case study. When working around forestry machines, one of our greatest risks is falling from heights. While working with haulers, some of the routine activities that is crucial to machine operation need to be done at an elevated position, sometimes as high as 14m from the ground. Although fall arrest harnesses are provided for this work, there is some doubt that they are used all the time. People have reported not using the harness because it’s difficult to fit it correctly, it takes time to fit, there is not enough attachment points on the machines, and that they “feel safe” going up the gantry ladder without a harness. -
WOODSMEN COMPETITION “Red, White, Blue….This Fair’S for You”
2017 WOODSMEN COMPETITION “Red, White, Blue….This Fair’s For You” Superintendent: Jodi Turner (603) 381-1717 SUNDAY, August 6th 10:00AM “Under the Pines” Check in by 9AM, contestants meeting at 9:30AM No equipment will be provided rd Trophies will be given for Overall Woodsman, Runner-Up and 3 Place Classes 1. 4.4 and down Stock Chain Saw 3. Log Rolling 5. Wood Splitting 7. Two Man Crosscut 2. 4.5 and up Stock Chain Saw 4. Axe Throwing 6. Jack & Jill Crosscut 8. Competition Two Man Crosscut General Rules ALL EXHIBITORS PAY GENERAL ADMISSION – NO ENTRY FEES WILL BE CHARGED Exhibitor will enter fairgrounds through Gate 4 – only vehicle carrying equipment will be allowed – all others park in General Parking Lot. Pay General Admission 1. A trophy will be awarded for first place in each event with ribbons for first four places. In two person events, both will receive trophies and ribbons. An overall Champion shall be determined by totaling the points won by each competition based on a point system of 5 points for first place down to 1 point for fifth place in each event. Ties for the overall will be broken by awarding it to the competitor with the most first place, second places, etc. 2. Contestants will strive to project a professional atmosphere at all times. The Head Judge or any acting officials will automatically disqualify contestants who do not conduct themselves in a sportsmanlike manner. 3. Only competitors competing in that event will be allowed in the competition area at the time of the event. -
Implications of Selective Harvesting of Natural Forests for Forest Product Recovery and Forest Carbon Emissions: Cases from Tarai Nepal and Queensland Australia
Article Implications of Selective Harvesting of Natural Forests for Forest Product Recovery and Forest Carbon Emissions: Cases from Tarai Nepal and Queensland Australia Bishnu Hari Poudyal, Tek Narayan Maraseni * and Geoff Cockfield Centre for Sustainable Agricultural Systems, University of Southern Queensland, Queensland 4350, Australia * Correspondence: [email protected] Received: 5 July 2019; Accepted: 13 August 2019; Published: 15 August 2019 Abstract: Selective logging is one of the main natural forest harvesting approaches worldwide and contributes nearly 15% of global timber needs. However, there are increasing concerns that ongoing selective logging practices have led to decreased forest product supply, increased forest degradation, and contributed to forest based carbon emissions. Taking cases of natural forest harvesting practices from the Tarai region of Nepal and Queensland Australia, this study assesses forest product recovery and associated carbon emissions along the timber production chain. Field measurements and product flow analysis of 127 commercially harvested trees up to the exit gate of sawmills and interaction with sawmill owners and forest managers reveal that: (1) Queensland selective logging has less volume recovery (52.8%) compared to Nepal (94.5%) leaving significant utilizable volume in the forest, (2) Stump volume represents 5.5% of total timber volume in Nepal and 3.9% in Queensland with an average stump height of 43.3 cm and 40.1 cm in Nepal and Queensland respectively, (3) Average sawn timber output from the harvested logs is 36.3% in Queensland against 3 3 61% in Nepal, (4) Nepal and Queensland leave 0.186 Mg C m− and 0.718 Mg C m− on the forest floor respectively, (5) Each harvested tree damages an average of five plant species in Nepal and four in Queensland predominantly seedlings in both sites, and (6) Overall logging related total emissions in 3 3 Queensland are more than double (1.099 Mg C m− ) those in Nepal (0.488 Mg C m− ). -
Missoula Technology and Development Center's 1995 Nursery and Reforestation Programs
Tree Planter's Notes, Vol. 46, No. 2 (1995) Missoula Technology and Development Center's 1995 Nursery and Reforestation Programs Ben Lowman Program leader, USDA Forest Service, Missoula Technology and Development Center Missoula, Montana The USDA Forest Service's Missoula Technology and Your nursery project proposals are welcome. They should Development Center (MTDC) evaluates existing technology and be submitted to Ben Lowman in writing or over the DG develops new technology to ensure that nursery and reforestation (B.Lowman:RO1A). Write a summary that clearly states the managers have appropriate equipment, materials, and techniques problem and proposes your desired action. The information for accomplishing their tasks. Work underway in 1995 is is used to determine priorities, to link you with others with described and recent publications, journal articles, and drawings similar problems or with solutions to your problem, or to are listed. Tree Planters' Notes 46(2):36-45; 1995. establish a project to solve the problem with appropriate equipment or techniques. The Missoula Technology and Development Center Pollen equipment (project leader-Debbie O'Rourke). (MTDC) has provided improved equipment, techniques, and Thirty years ago the Forest Service launched an expanded materials for Forest Service nurseries and reforestation tree improvement program. A network of seed orchards programs for more than 20 years. The Center has worked to with genetically superior trees was created in an effort to improve efficiency and safety in these areas, and throughout produce top-quality seed. These trees are now in the cone- the Forest Service. The Center evaluates existing technology bearing stage. Protecting the genetic quality of their seed is and equipment and develops new technology and equipment. -
Tree Harvester
850 CONTINUOUS ROTATION TREE HARVESTER WOODSMAN PRO 850 DESIGNED AND The ultimate tool for mechanised MANUFACTURED BY harvesting in New Zealand, our “Big Woodsman” will go to work on the most demanding trees and reliably produce clean stems and high-quality PRECISION logs with speed and efficiency. CONTROL BY The Woodsman Pro 850 has been developed specifically to perform in our challenging local forests. This processing head weighs 5.2 tonnes and is suitable for 32+ tonne base machines. The Woodsman Pro 850 is paired with our LOGGIC control system for superior performance and ease of operator use. 850 DESIGNED AND MANUFACTURED BY ENSIGN WOODSMANPRO.CO.NZ 850 DESIGNED AND MANUFACTURED BY ENSIGN FEATURES Continuous 360° rotation for manoeuvrability. DIMENSIONS Well concealed yet readily accessible hosing Weight: 5263 kg (11603 lb) (incl. knuckle) from machine arm to the control valve mounted Max height: 3653 mm (143.8 in) (incl. knuckle) in the head so downtime due to damaged Max width: 2508 mm (98.7 in) hydraulic lines is kept to a minimum. Max harvest tilt: 146 deg On-board fault diagnosis for head and base machine. Strong unyielding chassis with minimal wear to all pin connections after thousands of hours DELIMB of harsh operation. Max delimb knife opening: 874 mm (34.4 in) Max delimb capability: Ø800 mm (Ø31.5 in) Fabricated steel control valve bonnets providing Max full coverage delimbing diameter: 695 mm (27.3 in) easy access to main control valve and critical Knife edges: Replaceable - hardened, wear resistant steel. maintenance areas. Feed wheels feature reversible mounting to enable more even wear and prolong service life.