CTI Bibliography of Technical Papers - Wood Attack

Revised 2002

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Wood Attack
Order NumberTitleAuthorDate
Evaluation of a Simplified Procedure to Determine the Condition of Wood Cooling Tower Components. Matthew E. Anderson, Wood Advisory Services, Inc and Yelena S. Golod, BEC 2002
Abstract: This study was conducted in a effort to evaluate a simplified procedure for determining the condition of structural members in a wood cooling tower. Shutdown periods for inspections are costly and often only a short time period is available. The simplified awl penetration test commonly used by contractors during inspections of wood cooling towers would be more reliable if penetration data were correlated to mechanical properties. For this study, an awl test was conducted and mechanical properties were evaluated for wood removed from a cooling tower. Significant reductions in mechanical properties were found and consistent relationships between awl penetration and mechanical properties were observed. The use of an awl for inspections with quantifiable residual strength results appears to be promising, however, further testing should be conducted to verify an expand the results found in this study.
Creosote Revisited James L. Willa, Willa, Inc. 1998
Abstract: The ten-year field study by CTI to evaluate the best lumber and chemical pressure preservative pretreatment for cooling tower construction, conclusively proved that creosote redwood was essentially the same as Acid Copper Chromate (ACC) treated redwood, and better than another lumber and preservative treatment such as Chromated Copper Arsenate (CCA). However, premium labor costs for handling creosote caused it to fall from favor. This paper reviews this situation in view of the continuing difficulty in obtaining proper penetration of the recommended salt treatments. It includes two specific case studies of creosote cooling towers in the Gulf Coast area.
Wood Preservation and How It Pertains to the Cooling Tower Industry Darrell R. Smith, Conrad Wood Preserving Co., Jeffrey J. Morrell, Oregon State University 1996
Abstract: The proposed presentation would center on proper wood treatment of wood members that are destined for the harsh environment of the Cooling Tower Industry. The program would include: 1) Wood species and their treat ability 2) Preparation of the wood products before treatment a) Incising type and description b) Moisture content c) Stress reduction 3) Treatment techniques a) Waterborne preservatives b) Procedures 4) Post treatment 5) Handling and storing of treated products.
Identification of Cooling Tower Wood Attack and Methods of Control (TP-86-10) P. Song & Michael G. Trulear Nalco Chemical Company 1986
Abstract: Biological and chemical attack can greatly accelerate the deterioration of cooling tower wood. The damage, once inflicted, is irreversible and often results in premature and costly wood replacement. Biological attack is the more serious type of attack and is difficult to detect. Control of each type is essential for good tower maintenance. A review of wood structures, types of attack and methods for control are presented. Effects of alkaline cooling water operation on wood deterioration are also discussed.
Cooling Tower Wood Sampling and Analyses: A Case Study (TP-85-10) J.L. Haymore, Martin Marietta Energy Systems, Inc. 1985
Abstract: Extensive wood sampling and analyses programs were initiated on crossflow and counterflow cooling towers that have been in service since 1951 and 1955, respectively. Wood samples were taken from all areas of the towers and were subjected to biological, chemical and physical tests. The tests and results for the analyses are discussed. The results indicate the degree of wood deterioration, and areas of the towers that experience the most advanced degree of degradation.
Cooling Tower Wood Decay Prelimitary Survey Results and Conclusions (TP-85-19) Paul R. Puckorius, Puckorius and Associates, Inc. 1985
Abstract: Up-to-date results on Survey of Incidence of Wood Decay in Cooling Towers-a follow up of technical paper presented at February 1984 Annual CTI Meeting.
Cooling Tower Wood Decay Identification, Current Incidence, and Control Methods (TP-84-10) Paul R. Puckorius, Puckorius and Associates, Inc. 1984
Abstract: How to identify decay in wood cooling tower. Where it occurs, what it looks like and how to determine if it is in you tower. A review of the incidence in Douglas fir "treated" lumber, and how it can be controlled before and after the tower is assembled.
The Effects of Hot Water Exposure on the Strength and Stiffness of Douglas-Fir and Redwood (TP-264A) John A. Nelson & Robert W. Petterson, The Marley Cooling Company 1983
Abstract: Modulus of elasticity and compression parallel to grain have been determined on small clear and full sized samples of Douglas Fir and Redwood after three year wet exposures at room temperature, 120°F and 150°F. Determinations have been made at room temperature and at the temperature at which the samples were exposed. The results of the tests have been used to generate reduction factors to be applied to the properties tested.
Preservative Treatment of Cooling Tower Lumber a State-of-the-Art Report (TP-181A) David Hutton, P.E., BAC- Pritchard, Inc. 1978
Environmental Impact of Chemicals Washed From Preservative-Treated Wood (TP-147A) J.R. DeMonbrun, Union Carbide Corporation 1976
Fire Retardant Treated Wood For Cooling Tower Construction (TP-80A) Ralph H. Bescher, Koppers Company, Inc. 1970
Abstract: It is not unusual for a catastrophe in a totally unrelated area to have a marked effect upon the future of one's own industry. Could it be that the Bel Air conflagration in Southern California will have an effect upon the future construction of cooling towers? That fire did have an effect upon the insurance industry and they wrote a performance requirement for the fire proofing of cedar shingles and shakes. Several chemical manufacturers picked up this challenge and the net result was the development of leach resistant fire retardant treatment for wood used in wet applications. The physical characteristics of wood treated with NON-COM EXTERIOR will be discussed including the effect on strength, corrosion, decay resistance, Underwriters' Laboratories, Inc.'s fire tests and labeling, and the probability of meeting building codes and insurance regulations with regard to fire in various types of cooling towers.
Experience in Retarding Wood Rot by the Use of Plenum Chamber Sprays (TP-11A) Saul Kaye, Wright Chemical Corporation 1964
Field Tests and Evaluation of Polychlorophenates in Cooling Tower (TRP-120) C.D. Carlson, Dow Chemical Company 1962

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