Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1996-03-15
1998-03-17
Raevis, Robert
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
324700, G01N 1700
Patent
active
057289433
ABSTRACT:
A method and system for detecting and preventing Stress Corrosion Cracking (SCC) in buried pipelines or other structures is presented. The basic principle of the invention is to use a plurality of test coupons which are placed in the same environment as a pipeline or other structure of interest as indicators of the development of SCC in the structure of interest. Loading and temperature of the test coupons are controlled. The test coupons are given a range of different Cathodic Protection (CP) levels, with the range of CP levels selected so as to encompass the CP level at which SCC would be expected to occur. The occurrence of cracking in a test coupon indicates levels of CP which will sustain SCC. SCC is prevented in the structure by application of a level of CP which did not sustain SCC.
REFERENCES:
patent: 3770377 (1973-11-01), Scott et al.
patent: 3846795 (1974-11-01), Jones
patent: 3973056 (1976-08-01), Fessler et al.
patent: 3999121 (1976-12-01), Taylor, Jr.
patent: 4217180 (1980-08-01), Baxter et al.
patent: 4282181 (1981-08-01), Pierce
patent: 4303885 (1981-12-01), Davis et al.
patent: 4435984 (1984-03-01), Gruber
patent: 4522064 (1985-06-01), McMillan
patent: 4560931 (1985-12-01), Murakami et al.
patent: 4668303 (1987-05-01), Weber
patent: 4685335 (1987-08-01), Sato et al.
patent: 4794797 (1989-01-01), Ogawa
patent: 4808924 (1989-02-01), Cecco et al.
patent: 4808927 (1989-02-01), Cecco et al.
patent: 4950552 (1990-08-01), Amend et al.
patent: 4959177 (1990-09-01), Schutt
patent: 5180969 (1993-01-01), Kwun et al.
patent: 5203984 (1993-04-01), Sakai et al.
patent: 5227124 (1993-07-01), Saito et al.
patent: 5307385 (1994-04-01), Shimanuki et al.
patent: 5351543 (1994-10-01), Migliori et al.
patent: 5414353 (1995-05-01), Weischedel
patent: 5461313 (1995-10-01), Bohon et al.
"Stress Corrosion Cracking of Carbon Steel in Carbonate Solutions," J.M. Sutcliff, R.R. Fessler, W.K. Boyd and R.N. Parkins, Corrosion, vol. 28, No. 8, Aug. 1972, pp. 313-338.
"Technical Note: Stress Corrosion Cracking of X-52 Carbon Steel in Dilute Aqueous Solutions", Z. Szklarska-Smialowska, Z. Xia and R.B. Rebak, Corrosion, vol. 50, No. 5, May 1994, pp. 334-338.
"Hydrogen-Induced Stress Corrosion Cracking on a Pipeline", A. Punter, A.T. Fikkers and G. Vanstaen, Materials Performance, Jun. 1992, pp. 24-28.
"Modeling Stress-corrosion Cracking of High-Pressure Gas Pipelines", B.N. Leis and R.N. Parkins, Paper No. 19, Source Unknown.
"Major Field Study Compares Pipeline SCC with Coatings", Burke Delanty and John O'Beirne, Oil and Gas Journal, Jun. 15, 1992, pp. 39-44.
"Transgranular Stress Corrosion Cracking of High-Pressure Pipelines in Contact with Near-Neutral pH Solutions", R.N. Parkins and B.S. Delanty, Paper No. 16, Source Unknown.
"On the Mechanism of Stress Corrosion Cracking of Natural Gas Pipelines", John A. Beavers, Paper No. 17, Source Unknown.
"SCC Threshold Stress in Line Pipe Steels", D.B. Wells, Paper No. 18, Source Unknown.
"Recent Results of Metallurgical Studies on Line-Pipe Steels: Hydrogen-Stress Cracking Behavior", T.P. Groeneveld, Paper No. 20, Source Unknown.
"Factors Affecting the Potential of Galvanostatically Polarized Pipeline Steel in Relation to SCC in CO.sub.3.sup.2- --HCO.sub.3 --Solutions", R.N. Parkins, C.S. O'Dell and R.R. Fessler, Corrosion Science, vol. 24, No. 4, 1984, pp. 343-374.
"Effect of Surface Preparation and Coatings on SCC Susceptibility of Line Pipe: Phase 1--Laboratory Studies", J.A. Beavers, N.G. Thompson and K.E.W. Coulson, Paper No. 597, Paper presented at NACE International's Corrosion 93 Annual Conference.
"Effect of Surface Preparation and Coatings on SCC Susceptibility of Line Pipe: Phase 2--Field Studies", J.A. Beavers, N.G. Thompson and K.E.W. Coulson, Source Unknown, pp. 1-19.
"Electrochemical Processes Controlling SCC of Underground Pipelines", R.B. Rebak, Z. Xia, R. Safruddin and Z. Szklarska-Smialowska, Paper No. 184, Paper presented at NACE International's Corrosion 95 Annual Conference.
"Control of Pipeline Stress Corrosion Cracking is Probed", Wallace E. Almquist, Oil and Gas Journal, Oct. 22, 1979, pp. 68-73.
"Stress Corrosion Cracking of Ferritic Steels in CO.sub.2 --Containing Enviornments", R.N. Parkins, Source Unknown, pp. 45-64.
"Predictive Approaches to Stress Corrosion Cracking", R.N. Parkins, Corrosion Science, vol. 20, 1980, pp. 147-166.
"Generation of Stress Corrosion Cracking Environments at Pipeline Surfaces", E.A. Charles and R.N. Parkins, Corrosion, vol. 51, No. 7, 1995, pp. 518-527.
The Mechanical Parameters of Stress-Corrosion Cracking, J.C. Scully, Corrosion Science, vol. 8, 1968, pp. 759-769.
"On the Propagation of Stress Corrosion Cracks in Metals", J.G. Hines, Corrosion Science, vol. 1, 1961, pp. 21-48.
"Strain Rate Effect in Stress Corrosion Cracking", R.N. Parkins, Corrosion, vol. 46, No. 3, Mar. 1990, pp. 178-189.
"Stress Corrosion Testing Methods", ASTM, Special Technical Publication 425, pp. 3-20.
"Evaluation of Stress Corrosion Cracking", Donald O. Sprowls, Metals Handbook, pp. 245-282.
"Standard Practice for Preparation and Use of Bent-Beam Stress-Corrosion Test Specimens", ASTM G-39-90, pp. 151-157.
"Standard Practice for Making and Using C-Ring Stress Corrosion Test Specimens", ASTM G38-73, pp. 145-150.
"Test Methods for Low-pH Pipeline SCC: A Comparison of SSRT and Full Scale Testing", W. Zheng, R.W. Revie, F.A. MacLeod, D. Kliff and S. Rajan, Paper No. 187, Paper presented at NACE International's Corrosion 95 Annual Conference.
"A Full-Scale Test Approach to H.sub.2 S--Induced Environmental Cracking in Large Diameter Saw Pipes: Effects of Forming Processes", C. Bennett, A. Brown, M. Pontremoli, R. Poepperling and A. Streisselberger, Paper 15, Unknown Source.
"Constant Strain Rate Technique for Assessing Stress-Corrosion Susceptibility", J.H. Payer, W.E. Berry and W.K. Boyd, Stress Corrosion--New Approaches, ASTM STP 610, ASTM 1976, pp. 82-93.
"Standard Test Method for Resistivity of Electrical Conductor Materials", ASTM 193-87, pp. 299-302.
"Stress-Concentration Factors for Single Notch in Flat Bar in Pure and Central Bending", M.M. Leven and M.M. Frocht, Journal of Applied Mechanics, Dec. 1952, pp. 560-564.
"A Notched Ring Specimen for Hydrogen Embrittlement Studies", F.S. Williams, W. Beck and E.J. Janowsky, Presented at the Sixty-third Annual Meeting of the Society, Jun. 26-Jul. 1, 1960, pp. 1192-1199.
"Stress Analysis of Unnotched C-Rings Used for Stress Cracking Studies", S.O. Fernandez and G.F. Tisinai, Journal of Engineering for Industry, Feb. 1968, pp. 147-152.
"Cathodic Protection Levels Under Disbonded Coatings", R.R. Fessler, A.J. Markworth and R.N. Parkins, Corrosion, vol. 39, No. 1, Jan. 1983, pp. 20-25.
"A Study of Cathodic Polarization and pH Changes in Metal Crevices", M.H. Peterson and T.J. Lennox, Jr., Corrosion, vol. 29, No. 10, Oct. 1973, pp. 406-410.
"Potential and pH Relationships in Cathodically Polarized Metal Crevices", T.J. Lennox, Jr. and M.H. Peterson, Source Unknown, pp. 173-177.
"Low-Cost Electronic Devices for Corrosion Measurements", Robert Baboian and Paul Prew, Materials Performance, Jul., 1993, pp. 56-59.
"Field Evaluation of British Gas Wave Inspection System for SCC Detection", C.R. Ward and A.S. Mann, Paper No. 21, Unknown Source.
"Principles and Prevention of Corrosion", D.A. Jones, Macmillan Publishing Company, Chapter 8, pp. 234-242.
"Report on Failure Analysis", M.W. Hukle, Microalloying International Inc., Aug. 4, 1994.
Colter, Jr. Leslie G.
Katz David C.
Rizzo Frank E.
Goodall Eleanor V.
Northwest Pipeline Corporation
Raevis Robert
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