Volume 6B: Materials and Fabrication 2017
DOI: 10.1115/pvp2017-66055
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Bounding Surface Flaw Configuration Susceptible to Stress Corrosion Cracking Under Welding Residual Stress in a Multiple-Purpose Canister

Abstract: The part-through-wall crack perpendicular to the circumferential weld on the outside surface of a spent nuclear fuel (SNF) multiple-purpose canister (MPC) can be shown to be the most limiting fracture configuration driven by the welding residual stress (WRS). A series of semi-elliptical cracks of various sizes is chosen to calculate the stress intensity factors (K) under a bounding residual stress (i.e., the stress distribution that bounds all WRS in a canister). The threshold stress intensity factor (KISCC) o… Show more

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Cited by 3 publications
(3 citation statements)
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“…Lam et al [15] discussed the PTW crack perpendicular to the circumferential welds on the outside surface of a SNF canister that has been shown to be the most limiting fracture configuration driven by the WRS. A series of semi-elliptical cracks of various sizes is chosen to calculate the K factors under a bounding WRS (i.e., the stress distribution that bounds all WRSs in a canister), as shown in Figure 8.…”
Section: Bounding Residual Stress Estimation For Surface Crackmentioning
confidence: 99%
“…Lam et al [15] discussed the PTW crack perpendicular to the circumferential welds on the outside surface of a SNF canister that has been shown to be the most limiting fracture configuration driven by the WRS. A series of semi-elliptical cracks of various sizes is chosen to calculate the K factors under a bounding WRS (i.e., the stress distribution that bounds all WRSs in a canister), as shown in Figure 8.…”
Section: Bounding Residual Stress Estimation For Surface Crackmentioning
confidence: 99%
“…These stresses have been directly measured [6] and estimated [7] using recommendations from API-579 [8]. These stresses were used to calculate the stress intensity factor and determine the bounding surface flaw configurations for canisters sections adjacent to weldments in MPC [9]. The data show that the canisters sections adjacent to weldments can retain WRS in excess of the yield strength of the base metal and a stress intensity factor in excess of the canister material's postulated threshold stress intensity factor (KISCC).…”
Section: Introductionmentioning
confidence: 99%
“…Disposition of flaws that would be identified as stress corrosion cracks, and characterized or sized using visual, surface, and volumetric examination methods. Calculation the stress intensity factors (K) of these flaws under design basis loading cases and bounding residual stress levels will be conducted for identified flaws [9]. A prediction of flaw stability will be determined with allowance for flaw growth between inspection intervals.…”
Section: Introductionmentioning
confidence: 99%