... guideline. Since hydrogen activity at a crack tip is intensified when compared to the bulk of the material, tracking the crack growth rate (CGR) becomes a very sensitive parameter that can be used to characterize the interactions. The data will be presented and discussed in the context of a hydrogen...

... compact tension (CT) specimens in a seawater environment and under cathodic protection 2 . The procedure has been to monitor the crack growth and the crack growth rate (CGR) at various constant stress intensity and at varying cathodic protection potentials. In this way these two parameters can be seen...

... power plant. The as-received Alloy 600 showed crack growth rates (CGRs) between 9.6 × 10 -9 mm/s and 3.8 × 10 -8 mm/s, and the as-welded Alloy 182 had CGRs between 7.9 × 10 -8 mm/s and 7.5 × 10 -7 mm/s within the range of the applied loadings. These results indicate that Alloys 600 and 182...

...) to stress corrosion cracking (SCC) in oil and gas production environment typically is done using several methods involving statically loaded samples or slow strain rate testing. This paper demonstrated the use of rising displacement fracture toughness (FT) measurement and crack growth rate (CGR) measurement...

... ABSTRACT Most pipeline operators are using back-to-back In-line Inspection (ILI) tool runs to calculate corrosion growth rate (CGR). The CGR is used to predict the remaining life of pipe based on identified corrosion features. This methodology can be problematic as corrosion is a stochastic...

... appreciable change in the crack growth rate (CGR). Transitioning the crack to a constant K of 44MPa m (i.e. no cycling) led to a steady sustained crack growth rate of 1.1 10-7mm/s. Changing the pH of the test solution from 3.5 to 7.8, by switching from a sour gas purge to pure N2 purge resulted in an eight...

... ABSTRACT Corrosion growth rate (CGR) is one of the key elements in corrosion threat management. It is used to determine metal loss In-Line Inspection (ILI) re-assessment interval, identify high growth features that require excavation before the next ILI and predict probability of failure...

... growth HPHT H2S management CGR crack length k-rate int 0 manuscript crack growth rate strain rate permission static crack growth displacement test Houston ABSTRACT Crack growth rate (CGR) behavior of UNS N07718 was investigated as a function of K-rate in two different environments...

... and crack penetration depth as a function of storage time. Furthermore, some gaps in the technical background for CISCC of stainless steel canisters are discussed. critical condition sensitization flowline corrosion well integrity initiation cgr concentration stress corrosion subsurface...

... for identifying the irradiation assisted stress corrosion cracking ( IASCC ) mechanism and for establishing strategies for IASCC mitigation. In this study, experimental crack growth rate ( CGR ) data of irradiated alloys reported by the university and the Cooperative IASCC Research ( CIR ) program were...

... with various solute additions. The alloys include PS (316L+Hf, 9.6 dpa), IP (304 -C+P, 4.4 dpa), and MS (304+Ti, 10.7 dpa). The specimens were 8 mm round compact tension type, which were irradiated in the BOR-60 fast reactor. At the University of Michigan, crack growth rate (CGR) tests were conducted under...

... ABSTRACT: Crack growth rate (CGR) is a critical parameter in pipeline integrity management for estimating the time needed for the next in-line inspection (ILI) or pressure test or the reassessment interval for direct assessment. The current industrial practice of estimating CGRs uses...

... CANMET Materials Technology Laboratory Natural Resources Canada Government of Canada 568 Booth Street, Ottawa, Ontario K1A 0G1 ABSTRACT Crack growth rate (CGR) is a key parameter used in pipeline integrity management for estimating inspection or reassessment intervals due to stress corrosion cracking...

... rate (CGR) test on a neutron-irradiated stainless steel alloy was conducted under constant K condition in BWR NWC, BWR HWC, and PWR primary water at 288°C and 320°C. The specimen was an 8 mm round compact tension (RCT) sample of high purity 316L SS containing Hf (HP316L+Hf), irradiated to 9.6 dpa...

...) which is to be considered within data analysis to insure the pipeline segment does not warrant special consideration for ILI response.1 There are multiple options available for obtaining estimates of corrosion growth rate (CGR) with examples listed below in order of increased accuracy, with the first...

... Corrosion Inhibition biofuel ethanol solution oilfield chemistry H2S management Susceptibility hydraulic fracturing Corrosion Management steel n-ssr specimen ethanol environment water content specimen crack growth rate Production Chemistry ssr ratio 0 renewable energy CGR...

.... Kane iCorrosion LLC 2318 Huldy Street Houston TX 77019 ABSTRACT Slow-Strain-Rate (SSR) tests are usually limited to comparative evaluations of Stress Corrosion Cracking (SCC) based on relative changes in ductility parameters such as elongation and reduction in area. Recently Crack Growth Rate (CGR...

... were performed in 4 liter stainless steel autoclaves at 325°C and 13.7 MPa (2000 psi). Corrosion potentials of the CT specimen and a Pt coupon was measured using a zirconia membrane reference electrode [25]. RESULTS AND DISCUSSION The crack growth rate (CGR) of Alloy 600 was studied as a function of B...

... in supercritical water 2-4. Data on the crack growth rate (CGR) of alloys in pure supercritical water is non- existent. Establishing a database on SCC behavior as well as improving the understanding of SCC in supercritical water requires crack growth rate data. The objective of this paper is to gain insight...

... Production Chemistry CGR sulfate transient Corrosion Inhibition Corrosion Management steel H2S management high-purity water crack growth disposition line 2 chloride oilfield chemistry chloride transient experiment alloy specimen constant load crack growth behavior rpv steel...