Source: https://www.law.cornell.edu/cfr/text/7/1728.202
Timestamp: 2017-02-23 16:40:05
Document Index: 208094517

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7 CFR 1728.202 - Bulletin 1728H-702, Specification for Quality Control and Inspection of Timber Products. | US Law | LII / Legal Information Institute
CFR › Title 7 › Subtitle B › Chapter XVII › Part 1728 › Section 1728.202 7 CFR 1728.202 - Bulletin 1728H-702, Specification for Quality Control and Inspection of Timber Products.
(a)Scope. This specification describes in more detail the responsibilities and procedures pertaining to quality control for crossarms, as specified in § 1728.201 of this part, and poles, covered in Bulletin 1728F-700, “Specification for Wood Poles, Stubs and Anchor Logs,” incorporated by reference in § 1728.97 of this part and in § 1755.97 of 7 CFR part 1755.
(b)General stipulations.
(1) Conformance of poles and crossarms to agency specifications for the most part is the responsibility of the producer's management.
(2) The requirements of AWPA M3-05 (incorporated by reference at § 1728.97), covering records, adequate laboratory, plant gauges, and other plant facilities including proper storage, shall be followed.
(3) The methods of inspection described in this section shall be used no matter which plan timber products are purchased under, i.e., Insured Warranty Plan, Independent Inspection Plan, or Quality Assurance Plans, as described in § 1728.201 of this part or Bulletin 1728F-700 (incorporated by reference at § 1728.97). The number of poles and crossarms actually inspected by monitors for quality control under a Quality Assurance Plan or the Insured Warranty Plan may vary from the number of poles and crossarms inspected under the Independent Inspection Plan. Under the Independent Inspection Plan, each pole and a sample number of crossarms shall be inspected.
(5) Individual inspectors in the employ of Independent Inspection Agencies shall be experienced and competent. The inspector shall perform all phases of the inspection personally and in the proper sequence. The primary responsibility of the inspector is to determine, for the borrower, by careful inspection and verification, that the timber products, preservative, and treatment meet the requirements of Bulletins 1728F-700 (incorporated by reference at § 1728.97) and § 1728.201 of this part (Bulletin 1728H-701) and that the methods, storage facilities, and production equipment conform to applicable specifications. For details of the inspector's qualifications see Appendix A of this section.
(10) Laminated materials manufactured for use on borrower systems shall comply with manufacturing and quality control requirements specified in ANSI O5.2 (incorporated by reference in § 1728.97). The product shall be marked and certified.
(i) Laminated material shall be inspected in accordance with ANSI O5.2, (incorporated by reference in § 1728.97).
(ii) Quality control of material shall be performed to determine conformance with § 1728.201 of this part and AITC 200, (incorporated by reference in § 1728.97).
(c)Quality control and inspection procedures for product acceptance. It is the responsibility of the plant quality control designee to perform the following procedures to ensure that a particular lot of material conforms to the requirements of the applicable Agency specification prior to treatment. After the plant quality control designee has performed these procedures, a particular lot of material shall be released to the inspector for verification of conformance.
(i) Ample space and assistance shall be provided by the treating plant for handling and turning to ensure that the surfaces of all items can be adequately inspected.
(ii) Under the Independent Inspection Plan, all poles shall be inspected by the Independent Inspector for conformance to the requirements of Bulletin 1728F-700 (incorporated by reference at § 1728.97). If a pole is rejected and the cause of rejection is corrected, the rejected pole may be offered again for inspection as new material.
(3) Structural glued laminated timber shall be tested and inspected in accordance with AITC 200 (incorporated by reference in § 1728.97). Grade of lumber shall be inspected by a qualified grader for specified quality, so marked. Adhesives used for all structural arms shall meet requirements of ANSI O5.2 (incorporated by reference at § 1728.97) paragraph 5.2. Melamine urea adhesives shall not be used. End joint spacing and limitations shall be in accordance with ANSI O5.2.
(d)Preservatives.
(1) Creosote shall conform to the requirements of AWPA P1/P13-06 (incorporated by reference in § 1728.97) when analyzed by AWPA A-06, (incorporated by reference in § 1728.97) sections 2, 3, 4, either 5 or 9, and 6, as follows:
(2) Solutions of waterborne preservatives shall be analyzed for components in accordance with AWPA A2-08 (incorporated by reference in § 1728.97)) or AWPA A9-01 (incorporated by reference in § 1728.97) and shall meet the requirements of AWPA P5-08 (incorporated by reference in § 1728.97) for composition. AWPA A2-08 shall be used as a referee method.
(3) Pentachlorophenol shall contain not less than 95 percent chlorinated phenols and should conform to AWPA P8-08 (incorporated by reference in § 1728.297), in hydrocarbon solvent AWPA P9-06, Type A (incorporated by reference in § 1728.97).
(4) Copper Naphthenate in hydrocarbon solvent AWPA P9-06 Type A (incorporated by reference in § 1728.97), shall contain not less than 6 percent nor more than 8 percent copper in the form of Copper Naphthenate and shall conform to AWPA P8-08 (incorporated by reference in § 1728.97), when analyzed in accordance with AWPA A5-05 (incorporated by reference in § 1728.97).
(e)Plant facilities and inspection during treatment.
(1) Manufacturing and treating plant facilities shall conform to paragraph 3, AWPA M3-05 (incorporated by reference in § 1728.97), Pressure plants shall be equipped with recording instruments to register time, pressure, temperature and vacuum during each cycle of treatment. Pressure plants shall also be equipped with indicating thermometers and pressure and vacuum gauges to check the accuracy of the recorders. Work tanks shall be equipped with a thermometer. Thermal treating vats shall be equipped with a time and temperature recorder and with an indicating thermometer. Temperature recording devices are not mandatory for plants treating exclusively with waterborne preservatives.
(3) Recording instruments shall be checked with calibrated indicating gauges and thermometers, per AWPA M3-05 (incorporated by reference in § 1728.97). Inaccuracies shall be referred to the treating plant for prompt correction. If an inaccuracy which indicates error resulting in non-compliance with this specification indicating possible damage to the material, the inspector shall reject the charge.
(f)Results of treatment.
(1) Poles shall be tested for retention and penetration by means of a calibrated increment borer 0.2 inches ±0.02 inches in diameter in accordance with procedures in AWPA M2-07 (incorporated by reference in § 1728.97). Under the Independent Inspection Plan, all treating charges shall be tested for retention and penetration. Plant quality control and independent inspection shall do their analyses separately. Under the Insured Warranty Plan and Quality Assurance Plans, the frequency of testing retention and penetration may vary according to the agency approved plan.
(ii) Penetration compliance shall be determined in accordance with AWPA A3-08 (incorporated by reference in § 1728.97). Chrome Azurol S and Penta-Check shall be used to determine penetration of copper containing preservatives and penta, respectively.
* If a portion of these poles were green and some partially seasoned, then the number of borings should reflect the approximate percentage of each.
(A) Creosote retention shall be analyzed by AWPA A6-01 (incorporated by reference in § 1728.97);
(B) Penta retention shall be analyzed by AWPA A5-05 (incorporated by reference in § 1728.97) or AWPA A9-01 (incorporated by reference at § 1728.97). Copper pyridine method is required when timber may have been in contact with salt water and for all species native to the Pacific coast region, unless the raw material invoice specifically states that the material either has not been in contact with salt water or has been shown by analysis to have contained no additional chlorides before treating;
(C) Copper Naphthenate retention shall be analyzed by tests in accordance with AWPA A5-05 (incorporated by reference in § 1728.97) or AWPA A9-01 (incorporated by reference in § 1728.97);
(D) Waterborne preservatives retention shall be analyzed by tests in accordance with AWPA A2-08 (incorporated by reference in § 1728.97), AWPA A7-04 (incorporated by reference in § 1728.97); or AWPA A9-01 (incorporated by reference in § 1728.97); and,
(iii) All bored holes (nominal 0.2 of an inch diam. bit) shall be promptly filled with treated, tight-fitting wood plugs.
(ii) Preservative penetration shall be tested by taking not less than 20 borings from 20 crossarms in each charge, determined in accordance with AWPA A3-08 (incorporated by reference in § 1728.97). Chrome Azurol S and Penta-Check shall be used to determine penetration of copper containing preservatives and penta, respectively.
(7) To check the precision and accuracy of the in-plant x-ray fluorescence units (XRF) being used by producers, at least once monthly the independent inspector shall take a retention sample previously analyzed in the producer's laboratory and rerun it in the inspection agency's own laboratory. This sample shall be run utilizing either the XRF or recognized referee method for the given preservative. If the analytical results are within ±5% of retention value that was previously obtained on the sample using the plant's XRF unit, the plant instrument needs no further calibration. All XRF units maintained by independent agencies as part of their required laboratories shall be calibrated at least quarterly either by the referee method for each preservative treatment being analyzed by said agency or by comparison with a set of graduated treated wood standards.
(g)Product acceptance. Under the Independent Inspection Plan, the inspector shall signify acceptance by marking each piece of accepted material with a clear, legible hammer stamp in one end prior to treatment and in the other end after treatment. The inspector shall personally mark each piece, and shall not delegate this responsibility to another person.
(h)Charge numbers on re-treat poles.
(1) The letter “R” shall be added to the original charge number in the butts of all poles that are re-treated for insufficient penetration or retention of preservative.
(i)Safety provisions. Poles intended for agency borrowers shall not be inspected when, in the opinion of the inspector, unsafe conditions are present.
Appendix A to § 1728.202 - Inspector's Qualifications
[ 76 FR 36965, June 24, 2011, as amended at 77 FR 29537, May 18, 2012]