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Grapple Yarder and Supersnorkel Handbook

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Grapple Yarder and Supersnorkel Handbook Grapple yarder & Supersnorkel Handbook About WorkSafeBC WorkSafeBC (the Workers’ Compensation Board) is an independent provincial statutory agency governed by a Board of Directors. It is funded by insurance premiums paid by registered employers and by investment returns. In administering the Workers Compensation Act, WorkSafeBC remains separate and distinct from government; however, it is accountable to the public through government in its role of protecting and maintaining the overall well-being of the workers’ compensation system. WorkSafeBC was born out of a compromise between B.C.’s workers and employers in 1917 where workers gave up the right to sue their employers or fellow workers for injuries on the job in return for a no-fault insurance program fully paid for by employers. WorkSafeBC is committed to a safe and healthy workplace, and to providing return-to-work rehabilitation and legislated compensation benefits to workers injured as a result of their employment. WorkSafeBC Prevention Information Line The WorkSafeBC Prevention Information Line can answer your questions about workplace health and safety, worker and employer responsibilities, and reporting a workplace accident or incident. The Prevention Information Line accepts anonymous calls. Phone 604 276-3100 in the Lower Mainland, or call 1 888 621-7233 (621-SAFE) toll-free in British Columbia. To report after-hours and weekend accidents and emergencies, call 604 273-7711 in the Lower Mainland, or call 1 866 922-4357 (WCB-HELP) toll-free in British Columbia. Grapple Yarder & Supersnorkel Handbook WorkSafeBC publications Many publications are available on the WorkSafeBC web site. The Occupational Health and Safety Regulation and associated policies and guidelines, as well as excerpts and summaries of the Workers Compensation Act, are also available on the web site: WorkSafeBC.com Some publications are also available for purchase in print: Phone: 604 232-9704 Toll-free phone: 1 866 319-9704 Fax: 604 232-9703 Toll-free fax: 1 888 232-9714 Online ordering: WorkSafeBC.com and click on Publications; follow the links for ordering © 1998, 2004, 2011 Workers’ Compensation Board of British Columbia. All rights reserved. The Workers’ Compensation Board of B.C. encourages the copying, reproduction, and distribution of this document to promote health and safety in the workplace, provided that the Workers’ Compensation Board of B.C. is acknowledged. However, no part of this publication may be copied, reproduced, or distributed for profit or other commercial enterprise, nor may any part be incorporated into any other publication, without written permission of the Workers’ Compensation Board of B.C. Library and Archives Canada Cataloguing in Publication Main entry under title: Grapple yarder & supersnorkel handbook. — 1992 — Irregular. “WorkSafe.” ISSN 1712-6592 = Grapple yarder & supersnorkel handbook 1. Logging – British Columbia – Safety measures. 2. Logging – British Columbia – Machinery. 3. Forest machinery – British Columbia. I. Workers’ Compensation Board of British Columbia. II. Title: Grapple yarder and supersnorkel handbook. SB952.5.S72 2009363.17’92 C2009-906717-X ii Grapple Yarder & Supersnorkel Handbook Grapple Yarder & Supersnorkel Handbook at a glance Introduction . 1 General.planning.considerations . 6 Worker.safety.and.environmental.considerations. 9 Planning.and.developing.a.grapple.yarder.site. 14 Transporting.equipment.to.the.yarding.site. 37 Grapple.yarding.work.procedures. 45 Grapple.yarder.operator. 71 Grapple.yarder.hooktender,.spotter,.or.backspar.operator. 83 Utility.worker. 95 Grapple.yarding.in.winter.conditions. 98 Grapple.yarder.and.loader.inspections. 105 Loading.in.proximity.to.grapple.yarders. 111 Supersnorkel.yarder/loader.operator. 119 Supersnorkel.landing.worker. 139 Radios.and.verbal.signals . 147 First.aid.and.emergency.procedures. 149 Control.procedures . 153 Definitions. 155 Grapple Yarder & Supersnorkel Handbook iii Contents Introduction ............................................ 1 Responsibility for planning and safety . 1 Working safely . 1 Accidents .................................................................1 Planning .................................................................2 Training ..................................................................2 Supervision ...............................................................2 Responsibilities for safety . 2 Manager/superintendent ...................................................2 Forestry engineer ..........................................................3 Supervisor ................................................................3 Worker ...................................................................3 Environmental concerns . 4 Fire prevention and control . 4 Crew transportation . 5 General planning considerations ........................... 6 Type of terrain . 6 Size and volume of timber . 6 Yarding distances and available deflection . 6 Potential landing and haul road locations . 6 Type of machine and cable yarding system . 7 Common planning mistakes . 8 Worker safety and environmental considerations .............. 9 Falling non–clear-cut prescriptions . 9 Log landing areas . 10 Corridors . 10 Cross-slope movement of the yarding lines . 10 Runaway log hazard . 10 Overhead hazards . 11 Wind throw . 11 Wind throw amendments . 12 Riparian management and reserve zones . 12 Feathered edges . 12 Trespass . 13 Planning and developing a grapple yarder site ............... 14 Engineering and layout considerations . 14 Haul road layout and construction . 15 Planning the back end . 20 Suitable anchors . 20 iv Grapple Yarder & Supersnorkel Handbook Notching of stumps . 21 Securing of stumps . 22 Multiple stump anchors ...................................................22 Twisters .................................................................22 Jill-poke supports .........................................................23 Deadweight anchors ......................................................24 Skyline anchors . 24 Backspar guylines . 25 Tightening sequence . 27 Weather . 27 Landing areas for grapple yarders . 29 Building a log landing area ................................................32 Mobile backspar equipment ................................................32 Backspar roads . 34 Positioning equipment on backspar roads....................................35 Transporting equipment to the yarding site.................. 37 Planning . 37 Overhead obstructions . 37 Overhead electrical power lines ............................................37 Railway and road overpasses...............................................39 Preventing contact with overhead obstructions . .40 Loading equipment on the lowbed . 41 Moving equipment to the unloading site . 42 Snubbing, pulling, or pushing a lowbed or machine . 42 Unloading the equipment . 44 Grapple yarding work procedures.......................... 45 Yarding the logs . 45 Spotting the grapple . 46 Grapple yarding verbal signals .............................................48 Standing in the clear ......................................................49 Working the draws and ridges..............................................49 Grapple yarder backspars . 50 Example 1: Backspar ......................................................51 Example 2: Backspar ......................................................53 Example 3: Backspar ......................................................54 Example 4: Lift tree .......................................................55 Tree climbing . 55 Tree topping .............................................................56 Twister tiebacks ..........................................................57 Grapple Yarder & Supersnorkel Handbook v Yarding hazards . 59 Swinging chokers.........................................................59 Log piles . 60 Counterweight clearances..................................................60 Weather .................................................................61 Night operations..........................................................61 Tailhold blocks ...........................................................61 Deteriorated topping or gantry lines ........................................62 Dees, thimbles, and cable clips . .62 Spooling and cutting lines .................................................64 Windows . 67 Grapple yarder access .....................................................68 Line pulling of trees ......................................................69 Communications . 70 Personal protective equipment and clothing . 70 Housekeeping . 70 Maintenance . 70 Guarding . 70 Grapple yarder operator ................................. 71 Responsibility for safety . 71 Transporting the grapple yarder . 72 Grapple yarder hazards . 73 Walking the grapple yarder ................................................73 Culverts and bridges . .73 Overhead obstructions . 74 Travelling uphill and downhill . .75 Roads covered with debris or snow . .76 Rock protrusions .........................................................76 Rigging the grapple yarder . 77 Guylines.................................................................77 Yarding lines.............................................................80 Strawline ................................................................81 Hanging blocks and straps.................................................82 Grapple yarder hooktender, spotter, or backspar operator ...... 83 Responsibility for safety . 83
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