ASTM_D_4064_-_01.pdf

Designation:D 4064 01Standard Practice forPreservative Treatment of Utility Poles by the ThermalProcess1This standard is issued under the fixed designation D 4064;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon(e)indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice covers the full-length preservative treat-ment of utility poles by the thermal process.1.2 Poles furnished under this practice shall be limited to thefollowing species:Douglas fir(Pseudotsuga menziesii),Lodgepole pine(Pinus contorta),Alaska yellow cedar(Chamaecyparis nootkatensis),Northern white cedar(Thuja occidentalis),andWestern red cedar(Thuja plicata).1.3 The purchaser should note that requirements both withinand between species vary and care must be used in selection ofspecific options for the intended use and service area.2.Referenced Documents2.1 ASTM Standards:D 390 Specification for Coal-Tar Creosote for the Preserva-tive Treatment of Piles,Poles,and Timbers for Marine,Land,and Fresh Water Use2D 1272 Specification for Pentachlorophenol2D 1860 Test Method for Moisture and Creosote-Type Pre-servative in Wood2D 2085 Test Method for Determining Chloride Used InCalculating Pentachlorophenol in Solutions or Wood(Lime Ignition Method)2D 2604 Specification for High-Boiling Hydrocarbon Sol-vent for Preparing Oil-Borne Preservative Solutions2D 3507 Test Methods for Penetration of Preservatives inWood and for Differentiating Between Heartwood andSapwood22.2Other Standard:ANSI 05.1 American National Standard for Wood Poles-Specifications and Dimensions3AWPA Standard A5,Section 6 Determination of Pentachlo-rophenol in Oil or Wood by the Copper Pyridine Method43.Terminology3.1 Definitions of Terms Specific to This Standard:3.1.1 groundline or setting depththe groundline distancefrom the butt.4.Description of Treating Process4.1 The thermal treating process consists of at least twoseparate operations,namely the hot and cold(or cooling)cycles.Acold cycle is accomplished by removing the hot cyclepreservative from the treating tank and replacing it withpreservative at a lower temperature.A cooling cycle is accom-plished by allowing the preservative of the hot cycle to remainin the treating tank and cool,or to cool the hot preservative byuse of a heat exchanger piped to the treatment tank.In addition,a final expansion cycle with hot preservative may be applied.4.2 At no time during the entire process shall the tempera-ture of the preservative exceed 230F(110C).5.Plant Equipment5.1 Treating plants shall be equipped with thermometers,gages,clocks,recording devices,and related items to indicateand record accurately the conditions at all stages of the treatingprocess.Such equipment shall be maintained in acceptable,working condition and be inspected for calibration and accu-racy annually.5.2 The apparatus and chemicals necessary for making theanalyses and tests required shall be provided by plant operatorsand kept in condition for use at all times.6.Prior to Treatment6.1 SeasoningBefore treatment,poles shall be air sea-soned,under proper sanitary conditions,or kiln dried asdefined in ANSI 05.1,Paragraph 5.1.2.1,and 5.1.2.3 tominimize checking after treatment and to permit maximum1This practice is under the jurisdiction of ASTM Committee D07 on Wood,andis the direct responsibility of Subcommittee D07.06 on Treatments for WoodProducts.Current edition approved April 10,2001.Published June 2001.Originallypublished as D 4064 81.Last previous edition D 4064 89.Some requirements in this practice are similar to those in the CommoditiesStandards of the American Wood-Preservers Association for full-length preserva-tive treatment of utility poles by the thermal process with preservative materials andsolutions.Acknowledgment is made to the American Wood-Preservers Associationfor its development of subject matter used in this practice.2Annual Book of ASTM Standards,Vol 04.10.3Available from American National Standards Institute,11 W.42nd St.,13thFloor,New York,N.Y.10036.4Available from American Wood-Preservers Association,P.O.Box 286,Wood-stock,MD 211630286.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.penetration and retention of preservative.Certain arid usageareas will require lower moisture contents than the valuesexpressed in this practice.6.1.1 Determination of Moisture ContentPrior to treat-ment,the moisture content of a charge or order(whichever isless in number)shall be determined by either of the followingmethods:(a)Use of an approved resistance type moisturemeter equipped with insulated needles.The needles shall bedriven to a depth equal to the minimum preservative penetra-tion for standard treatments;(b)Oven-drying increment borercores.The sample used shall be the aggregate depth equal