SCALING AT MWFP. By Max Matthews

Transcription

1 SCALING AT MWFP By Max Matthews

2 OUTLINE Role of Scaling in Forest Management Alberta Scaling System Legislation Why we Scale Types of Scaling Weigh Scale / Mass Scale LIMS / Weigh / Whiz

3 OUTLINE (Cont.) Scaling Plans / Stratification Process Weigh Scales Sequence of a scaling operation Scale load analysis

4 Role of Scaling in Forest Management Scaling is the process to determine the volume of harvested timber This is different from cruising or remote sensing which is used to estimate the volume of standing timber Scaling data used for such purposes as: Crown dues owing AAC monitoring Contractor payments Statistical information for a working circle Mill Studies and mill consumption

5 Alberta Scaling System The Forests Act and subsequent Scaling Regulation ( AR195/2002) covers all scaling activities in Alberta The Alberta Scaling Manual contains the procedures for scaling as approved by the minister. The scaling manual is available online

6 Legislation

7 Why Do We Scale Engineering & Planning Accounting Scale Mill Logging Production

8 Why We Scale MWFP hauls over 40,000 loads in a year Impractical to measure every load Mass scaling allows us to stratify and sample Scale data will give information for Crown dues Contractor pay Mill yard inventory Cut control records - AAC

9 Types of Scaling Bush Scaling Quality Control Scaling Smalian Scale Cube Scale Smalian Scale will be main focus of my presentation

10 Bush Scale Used for contractor advances Not in use much Employs the use of Local Volume tables derived from yard scale data Method involves total tree counts and a sample of butt diameters

11 Quality Scale This is a Company driven scale. Used to monitor contractor performance Can be used for bonus or penalty

12 Cube Scaling Logs are stacked cut to same length Diameters measured on one pile face Volumes determined using a cylindrical volume formula Defects include soft rots and missing wood

13 Smalian Scale Standard scaling method endorsed by CSA Formula V=a1+a2/2 X L

14 Mass Scaling Procedures Before one scales the following must be in place Weigh scale compliant with Weights and Measures Canada standards Site has to be authorized by SRD Certified scalers Scaling Plans approved by SRD

15 Steps in Mass Scaling Stratification of the various cutting areas into a sampling population Logging plans number of loads by area Establish and comply with a statistical defensible sample plan SRD approval - TM262 Monitor populations - adjust if needed

16 Scale Estimate TM262 Example

17 Scale Estimate TM 262 Revision

18 Steps in Mass Scaling Accurate Load tracking Starts at the loader

19 Steps in Mass Scaling (Cont.) Ensuring load selection is random Sample loads are handled correctly and scaled by a certified scaler in an approved manner Accurate consolidation of load weights and sample scale data Timely submission of scale data to SRD( within 21 days following the scale)

20 Weigh scale A weigh scale Load cells beneath deck Register pressure at the cell points

21 Weigh Scale (Cont.) Types of scales Fully manned

22 Man less Weigh Scale (Cont.)

23 Weigh Scale (Cont.) Portable Self contained

24 Weigh Scale (Cont.) Portable Temporary footings One year certification

25 Weigh Scale Requirements Requirements Conform to Federal and provincial regulations Capacity and length sufficient to determine the mass of loaded vehicle Un attended scale Automatic means to indicate scale has returned to zero Automatic means of preventing weighing if scale is not zeroed or truck is not supported fully

26 Weigh Scale Requirements (Cont.) Maintenance Scale testing and calibration annually Section testing periodically Regular daily maintenance of deck i.e snow clearing Suspension May be suspended by SRD if scale and maintenance is non compliant

27 Sample Scaling Process Load is chosen and spread in yard

28 Sample Scaling Process (Cont.) Butt & top diameters and lengths taken Defects measured Smalian formula

29 Sample Scaling Must be elevated to allow an X and Y measurement

30 Scale Data Accurate lengths, diameters and cull entered into handheld Downloaded into SRD Mscale program Scaling reports generated Pertinent data entered into LIMS reports

31 Weigh Whiz at Scales Program Overview

32 Weigh Whiz at Scales

33 Weigh Whiz at Scales

34 Scale Analysis

35 Pop 133 Scale Analysis

36 Scaling for Mill Needs Species breakdown Cull % Ramifications at facilities

37 SUMMARY OF DECIDUOUS SPECIES BREAKDOWN & CULL Year Total Harvest Aspen Volume Poplar Volume Poplar % Total Cull Pb Cull Aspen Cull , , , % 6.52% 2.20% 7.06% , , , % 8.06% 3.62% 8.80% , , , % 10.88% 4.24% 11.80% , , , % 9.17% 3.89% 10.06%