FMG LOG QUALITY SPECIFICATIONS. Alberta Winter 2012

Transcription

1 FMG LOG QUALITY SPECIFICATIONS Alberta Winter 2012 Version: November 23, 2012

2 Log Quality Specifications -2== Version: November 23, 2012 Page 2 Section 1 - Defect Descriptions & Specifications Logs delivered to Canfor's manufacturing plants must comply with the log manufacturing specifications and guidelines as follows. These specifications reflect Canfor s License utilization requirements and individual plant specifications. Log quality specifications are reassessed seasonally. Log quality will be monitored using Government/Company Samples and joint on-block sampling by Harvesting Supervisors and Contractors. Bush results are documented and shared with Harvesting Contractors on the harvesting site. Both will be entered into the LQ Management System and distributed as required. SPECIFICATION DEFINITION Length Tolerance 2 short and 2 long Top Size 4.5 Top diameter measured inside the bark, ¼ tolerance allowed. Spiral Checking Straight Checks & Multiple Checks Maximum Spiral Check of ¼ turn in 16 excluding surface checks. Acceptable if there is 50% lumber recovery. Seasonal checking is acceptable at all mills. Twist For extremely spiral grained logs, a full rotation over 16. Processor Damage Excessive damage to log that will affect lumber quality caused by processor feed roll spikes. Other damage from processor (spinout, knife damage) falls under machine damage specs. Poor Falling or Bucking Cut A log with a step cut or slanted cut, which exceeds 2". Buncher Double Cuts often result in splits up the stem, this creates a huge recovery loss for the mills. If you cannot fall the tree without damage, it should be handfell.

3 Log Quality Specifications -3== Version: November 23, 2012 Page 3 Machine Damage/ Deep Bucking Cut Damage to any part of the log that is deeper than 2 beyond normal taper is unacceptable. Logs 20 and over may have machine damage of 4 into normal taper. This includes spearing, dents, gouges, buncher damage, processor damage (other than spike holes), or shatter. Holes created by branch delimbing are acceptable. Split Tops and Butts. Splits occurring within the outer 10% of the butt or top are acceptable provided that the split travels straight or towards the outer edge of the log. Checks from drying and ring shake are acceptable.

4 Log Quality Specifications -4== Version: November 23, 2012 Page 4 Dead/Dry logs: Butt Rot (Spruce, Pine) Sawlogs: are acceptable at all sawmills, See individual mill pages for dry Balsam. Stain is not considered rot as long as it is hard and growth rings are still visible. White fleck rot is unacceptable. Butt Rot by Diameter > 8 (Spruce, Pine) 40% Logs > 8 diameter at the butt, no more than 40 % of the diameter allowed for rot. Logs < 8 No rot acceptable Butt Diameter Acceptable Rot Diameter Butt Diameter Acceptable Rot Diameter Butt Rot (Balsam) Top Rot (all) Sap Rot (all) Saw logs: No more than 25 % rot by diameter allowed for any size of butt. No rot in dry Balsam sawlogs. Logs < 8 No rot acceptable. No rot allowed on tops < 6. Logs greater than 6, 20% of diameter is allowed. Stain is acceptable, white fleck is unacceptable. No more than 20% of diameter sap rot. A residual core of 4.5 must remain in all cases. Sap rot is defined as fibre that is soft or crumbles and has lost its integrity.

5 Log Quality Specifications -5== Version: November 23, 2012 Page 5 Snipe A log with an incomplete cut at either end, leaving a snipe greater than 2" long and ½" in thickness, is not acceptable. Excessive Sweep Sweep is acceptable if in any 16' 0 long section of log, where a tape line from the centre of butt and centre of top end, mid point of tape must not fall outside the log section. Shorter lengths to be assessed as if they were 16 in length. The picture, an unacceptable sweep, illustrates how sweep is measured. Logs that are 3 or more over the acceptable sweep tolerance will be treated as production killers. Snake sweep must still leave 50% or more diameter available for milling.

6 Log Quality Specifications -6== Version: November 23, 2012 Page 6 School Marm A properly bucked school marm will have no more than 25% of the diameter of bark seam showing. Limbs, Spikes All limbs and spikes must be bucked flush. A maximum tolerance of 1" is allowed. Discretion must be used in assessing for limbs/spikes defects when repeated delimbing of branches would cause machine damage and loss of recovery or grade.

7 Log Quality Specifications -7== Version: November 23, 2012 Page 7 Crook/Pistol Grip A log that has an abrupt offset at a point along its length or a 50% reduction in diameter at one specific point. Crooks that have greater than 50% displacement by diameter should be bucked out minimizing the avoidable waste. A minimum of 4.5 solid wood is required minimum solid wood available for lumber 4.5 Pistol Grip looks like a hockey stick and is an abrupt turn in the first or last 3 of the log. Burls or Natural Deformities Any burl or deformity that protrudes greater than 1 from the natural taper of the log must be bucked flush or bucked out.

8 Log Quality Specifications -8== Version: November 23, 2012 Page 8 Gnarly top If a top looks gnarly and/or ugly (no lumber recovery possible), it is not acceptable. Gnarly tops should be bucked off leaving a primary or secondary log length. Buck at red line Buck at red line Buck at red line Cat Face All wood within the cat face must be tight with no burnt wood / charcoal accepted. Cat Faces (single or in combination) must still allow for at least 50% lumber recovery, or a minimum of 4.5 of firm wood.

9 Log Quality Specifications -9== Version: November 23, 2012 Page 9 Excessive Butt flare Any flare greater than 2 on either side, outside of the normal taper of the log measured over a 3 0 length. Broken Ends Incorrect Product Sort Non-Merch. Chunk Burned Wood Random Length Preferred Lengths Off-length top logs resulting from breakage are to be cut clean, to the receiving sawmill s preferred length or secondary length. Logs sent to the wrong destination or not sorted as per sawmill specifications, diameter sorts will be measured at the largest diameter. Sawmill/Chip plant - a log that is shorter than 8' 2 in length in small + medium sort and 10 2 in large. A burned log, partially burned log or catface containing charcoal that has not been approved for delivery, normally burnt wood is not accepted at any processing facility. Random length means a log not cut to a measured length, but cut to within 1 of the specified mill top size (up to 5.5 ). Buck logs to the preferred lengths shown for each mill only use secondary lengths when bucking back for defect, unless specified for that mill.

10 Log Quality Specifications -10== Version: November 23, 2012 Page 10 Cull Log Production Killers Obvious cull logs are not acceptable, only sawlogs with greater than 50 % rot by diameter at both ends, or deciduous in sawlog loads or burnt wood can be culls. Production Killers are any log that has the potential to cause any loss of production in the sawmill or jeopardize the safety of sawmill employees, such as jam up. A few examples of production killers are: runaway length, severely excessive sweep, excessive oversize. GP mill specifications: Root flare or Burls >6 Excessive sweep over 3 of allowable deflection Any log over 21 in length

11 Log Quality Specifications -11== Version: November 23, 2012 Page 11 Section 2: Other Specifications Loading/Sorting Balsam Cedar/Hemlock/Fir Loadslips Cleanup Loads Measuring Butt Diameters Excessive Debris Foreign Material Balsam is to be sorted when directed by the Forestry Supervisors. No Cedar, Hemlock or Fir to any mill or pulp facility unless previously authorized by Forestry Supervisor. Must be sorted separately and delivered as directed. Loadslips must be correctly and completely filled out by the Loaderman. Sorts, Species id, Bundles etc are all critical information. Improperly completed loadslips could result in infraction penalties to the contractor. Cleanup loads which have a mixture of species or sorts but does not include pulp. Number of loads must be minimized to 1 or 2 per cutblock. A C must be painted on the front driver side of the load, marked on the trucker slip and identified at the scales for safe and proper millyard handling. Check with Harvesting Supervisor to see if prior approval is required. All Butt Diameter measurements are measured across the maximum width on the larger end of the log. Is not acceptable. No loose debris in the load (limbs, chunks, long butts, and rat tails). Long branches and small trees >1 diameter will be assessed as 1 point up to maximum 5 points per load. Fine branches and small chunks will not be penalized. Any log or a load of logs, which contains any material other than wood (ie. rock, wire, nails, etc.) Foreign debris will be assessed as production killers.

12 Log Quality Specifications -12== Version: November 23, 2012 Page 12 Section 3 Mill Specifications Grande Prairie Sawmill Specifications FMA / QUOTA SORTS Top Diameter Max Butt 26.0 Other Lengths 4.5 Prime Lengths Min Length 12 4 Sorts Butt Diameter Small < / 12 4 Medium SALVAGE SORTS Volume at Site <1000 m3 >1000 m3 Sort Butt Diameter Butt Diameter / 14 4 / 12 4 Large , 12 4 Oversize > < Balsam 14 4 / Lengths Small < 10" < 9" 16 4 Medium n/a 9" " 16 4 Large 10" - 26" 12.5" - 26" 16 4 Oversize >26" >26" 16 4 Sawlogs: 8 and 10 lengths are unacceptable and should be produced only as a last resort. Oversize >26 to 32 to be bucked to 16 4 and delivered separately. All oversize logs must be identified by painting the butt with an O. Oversize >32 will be as directed by the Harvesting Supervisor. If delivered to the Grande Prairie Mill, Oversize must be labeled OS >32. All balsam deliveries will be as directed by Harvesting Supervisor. Measured butt diameter tolerances are +/- 1. Tamarack is an unacceptable sawlog species and should not be delivered to the mill. In the event it is delivered, pieces will be marked as cull and awarded a 5 point defect allowance. Salvage Loads must be identified to the yard upon delivery as Salvage and will be directed to Production for immediate consumption. Pulp: Any questionable saw log should be utilized as pulp (top and butt) where pulp has been approved by Canfor Supervisor. Pulp will be cut as directed by the Harvesting Supervisor.

13 Log Quality Specifications -13== Version: November 23, 2012 Page 13 Table of Revisions: Date Section Revision July 6, 2012 Machine Damage / Deep Bucking Cut Changed from ½ on any log to 2 and 4 for logs >20 July 6, 2012 Multiple Checks Removed ¼ inch maximum check width, left as 50% recovery. July 6, 2012 Straight Checks Removed ¼ inch maximum check width Sept 7, 2012 Medium Profile diameter From 14 on 20 5 bolts to maximum 12.5 Oct Twist Full rotation over 16 Oct Split tops and butts Added comment about shakes and checks Oct Processor Damage Added comments on what is and isn t processor damage Nov Spiral Check Added comment on surface checks Nov Multiple and Straight Checks Combined Nov Processor Damages Reworded definition Nov Crooks and Pistol Grip Adjusted definition of crooks and Pistol Grips Nov Cat Face Reworded definition and criteria Nov Incorrect Product Sort Added detail Nov Foreign Material / Debris Reworded definition and criteria Nov GP Specific Page Removed reference to product length accuracy by sort and Top size variance allowance. Distribution List: Grande Prairie Plant Manger Clem Luken Plant Production Superintendent Mike Jebb Log Yard Supervisor Ted Auxi Grande Prairie Division Scalers (through Log Yard Supervisor) Scaling Coordinator Don Hascarl Operations Manager - Peace/Alberta Mark Thom Operations Superintendent Jon Taszlikowicz Grande Prairie Forestry Supervisors Contractors