A methodological approach towards specific cost and productivity models for cable yarding in the French Alps

Transcription

1 A methodological approach towards specific cost and productivity models for cable yarding in the French Alps P. MAGAUD IUFRO 3.06: Forest operations in mountainous terrain NORWAY, June 2013

2 NEWFOR: AN ALPINE SPACE PROGRAMME Number of partners : 14 from 6 countries (Italy, Germany, France, Austria, Switzerland, Slovenia) Lead partner : IRSTEA Project duration : 36 months Aim of the project: tools for decisions makers in mountainous areas 4 tasks: - LIDAR detection: volume and quality - forest accessibility: tools for harvesting system determination - transport and connectivity: optimization of logistic between logging site and wood industries - costs and benefits: costs evaluation with socio-economics indicators PAGE 02 l DÉCEMBRE 2012 I FCBA

3 CABLE YARDING: SITUATION IN FRANCE Less than 20 enterprises in France In the French Alps, m3 per year are mobilised by cable yarding Only 7 enterprises, and 3 with cable crane (trailer) Most of time: whole tree extraction + processor Difficulties to create new team to determine the previous cost of logging operations PAGE 03 l DÉCEMBRE 2012 I FCBA

4 HEPROMO: SOFTWARE FOR COST CALCULATION Created in 2003 by WSL (Swiss), French translation in 2010 Determination of previous cost for all logging activities For cable crane operations: Based on logs, not for whole trees used in France by contractors, but the results are quite different from reality calculated for each skyline need to be tested with whole tree in French conditions And Hepromo? adaptation (parameters)? news productivity model? PAGE 04 l DÉCEMBRE 2012 I FCBA

5 HEPROMO: PREVISIONNAL CALCULATION Line parameters Cliquez pour modifier les styles du texte du masque Deuxième niveau Troisième niveau Quatrième niveau» Cinquième niveau Personal activities PAGE 05 l DÉCEMBRE 2012 I FCBA Personal and machines costs

6 HEPROMO: EXPECTED COST Economical results Cliquez pour modifier les styles du texte du masque Deuxième niveau Troisième niveau Quatrième niveau» Cinquième niveau PAGE 06 l DÉCEMBRE 2012 I FCBA Technical results

7 COMPARISON METHODOLOGY Field survey LOGGING CONTRACTORS data PREVISIONNAL (HEPROMO) REALITY (field survey) TECHNICAL RESULTS EXPECTED COSTS COMPARISON COMPARISON TECHNICAL RESULTS CALCULATED COSTS COMPARISON REAL COSTS PAGE 07 l DÉCEMBRE 2012 I FCBA

8 THE FIELD SURVEY 4 French enterprises (cable crane): 2 Konrad KMS 12 U, Valentini 600 and V600 m3 (on tracks), all with excavator + processor (whole tree extraction) 27 logging sites and more than 40 lines have been analyzed: Description of the stand, logging operation, field condition Times sheets (schedule, activities), time studies Data on all the phases: Installation Production Removing Duration, number of operators, number of supports Duration, number of operators, harvested volume, speed of carriage, productivity. Duration, number of operators. PAGE 08 l DÉCEMBRE 2012 I FCBA

9 THE FIELD SURVEY Some average data: - altitude: 1200 m - length: 422 m, for 400 m3/line high rate (IPC) - time for line installation: 1.4 day (0 to 3 intermediate supports) - time for line removing: 0.6 day - time for production: 7 days/line, 62 m3/day (without installation and removing) - volume of the load: 1.7 m3 (1.9 tones with branches) always under the carriage capacity (3 to 4 tones) Speed of the carriage: Without charge Medium 3.5 m/s 2 m/s With charge mini 1.7 m/s 1.3 m/s maxi 5.3 m/s 3.7 m/s PAGE 09 l DÉCEMBRE 2012 I FCBA

10 COSTS CALCULATION Machine costs /day (with charges): Trailer + processor: 88 H Operators: 31 /H Used in all logging s phases In general: 3 operators for installation 2 operators for production 3 operators for removing Installation Production removing Cost Logging site Line 2 operators (hours) 1 operator (hours) 2 operators (hours) 1 operator (hours) Volume m³ 2 operators (hours) 1 operator (hours) Cable + processor /Hour 1 operator /Hour Total /m³ Le Verneil 1 14,5 14, , ,0 PAGE 010 l DÉCEMBRE 2012 I FCBA

11 COSTS COMPARISON - Big gap between Hepromo calculation and field calculation (with the same values for machines and men costs): Average gap: 33 % and 9 /m3: much more expensive in France Irregular variations a lot of parameters must be changed Comparison of costs ( /m3) Costs ( /m3) N of câble line Hepro NEWFOR Gap PAGE 011 l DÉCEMBRE 2012 I FCBA

12 TECHNICAL COMPARISON Productivity: average gap: 20% (2,6 m 3 /H) No regular variations Productivity on harvesting (m3/h) Comparison of productivity time (h/team) N of câble line Commercial volume on the carriage (without branches): average gap: Hepro NEWFOR Gap Comparison of volume on the carriage (m3) 23 % (0,5 m 3 ) Regular variations weight of branches in whole tree extraction Volume (m3) N of câble line PAGE 012 l DÉCEMBRE 2012 I FCBA Hepro NEWFOR Gap

13 TECHNICAL COMPARISON With low productivity and low volume on the carriage, French timber yard take a longer time (even more on long skylines) some logging site (4) with delimbing logs - Volume on the carriage is near in both approach validity of the model for delimbing logs External factors have importance: truck logistic and meteorological situation We have to built a new productivity model PAGE 013 l DÉCEMBRE 2012 I FCBA

14 CONCLUSION The field survey (still in progress) give a lot of interesting data for cable yarding The test of Hepromo software with theses data show the validity of the model for delimbing logs, but not for whole tree (big gaps, specially for productivity). The set of data will be used to: -Determine the main parameters needed for a new productivity model (statistical approach) -Test the model after his construction PAGE 014 l DÉCEMBRE 2012 I FCBA

15 Topics for presentations and posters (see fec2014.fcba.fr) 1. Managing interactions between logging operations and forest ecosystems services 2. Answering specific challenges in harvesting technologies and working methods 3. Being innovative in transportation solutions and logistics 4. Better working conditions and educational programs 5. Organizational innovations and other strategies for a better planning and monitoring of forest operations in specific contexts PAGE 015 l DÉCEMBRE 2012 I FCBA 6. Implementing Precision Forestry concepts for improved wood-supply-chains

16 Maryse Bigot & Morgan Vuillermoz 10, avenue de Saint Mandé, F Paris, France Tel +33(0) Fax +33(0) More information : fec2014.fcba.fr PAGE 016 l DÉCEMBRE 2012 I FCBA

17 THANK YOU FOR YOUR ATTENTION