Seal design alternatives study

Sambeek, L.L. Van; Luo, D.D.; Lin, Pei-Chun; Ostrowski, W.; Oyenuga, D.

doi:10.2172/10177747

Cited by 9 publications

(9 citation statements)

References 15 publications

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“…This method has been used extensively in the last several years for estimating the potential for salt dilation around salt storage caverns (e.g., Ratigan et al [1993]) and dry-mined excavations in salt at the Waste Isolation Pilot Plant (WIPP) in New Mexico (e.g., Hansen et al [1993]; Lin and Van Sambeek [1992]; Van Sambeek et al [1993]). Ratigan et al [1991] show that the potential for dilation in the salt surrounding an underground opening in salt can be described as:…”

Section: Damage Potential Methodsmentioning

confidence: 99%

“…The Damage Potential method indicates whether or not salt could dilate based only on the stress states in the salt [Ratigan et al, 1991]. This method has been used extensively in the last several years for estimating the potential for salt dilation around salt storage caverns (e.g., Ratigan et al [1993]) and dry-mined excavations in salt at the WIPP in New Mexico (e.g., Hansen et al [1993]; Lin and Van Sambeek [1992]; Van Sambeek et al [1993]). The Multimechanism Deformation Coupled Fracture (MDCF) method is based not only on the stress state, but also the stress history.…”

Section: Technical Approach For Predicting Cavern Stabilitymentioning

confidence: 99%

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Advanced Gas Storage Concepts: Technologies for the Future

Freeway¹,

Rogers

DeVries³

et al. 2000

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Limited demand and high cost has prevented the construction of hard rock caverns in this country for a number of years. The storage of natural gas in mined caverns may prove technically feasible if the geology of the targeted market area is suitable; and economically feasible if the cost and convenience of service is competitive with alternative available storage methods for peak supply requirements. It is believed that mined cavern storage can provide the advantages of high delivery rates and multiple fillwithdrawal cycles in areas where salt cavern storage is not possible. In this research project, PB-KBB merged advanced mining technologies and gas refrigeration techniques to develop conceptual designs and cost estimates to demonstrate the commercialization potential of the storage of refrigerated natural gas in hard rock caverns. Five regions of the U.S.A. were studied for underground storage development and PB-KBB reviewed the literature to determine if the geology of these regions was suitable for siting hard rock storage caverns. Area gas market conditions in these regions were also studied to determine the need for such storage. Based on an analysis of many factors, a possible site was determined to be in Howard and Montgomery Counties, Maryland. The area has compatible geology and a gas industry infrastructure for the nearby market populous of Baltimore and Washington D.C..As Gas temperature is lowered, the compressibility of the gas reaches an optimum value. The compressibility of the gas, and the resultant gas density, is a function of temperature and pressure. This relationship can be used to commercial advantage by reducing the size of a storage cavern for a given working volume of natural gas. This study looks at this relationship and and the potential for commercialization of the process in a storage application. A conceptual process design, and cavern design were developed for various operating conditions. Potential site locations were considered and a typical plant layout was developed. In addition a geomechanical review of the proposed cavern design was performed, evaluating the stability of the mine rooms and shafts, and the effects of the refrigerated gas temperatures on the stability of the cavern.Capital and operating cost estimates were also developed for the various temperature cases considered.The cost estimates developed were used to perform a comparative market analysis of this type of gas storage system to other systems that are commercially used in the region of the study. This report was prepared as an account of work sponsored by an agency of the United States Government.Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, pr...

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Section: Damage Potential Methodsmentioning

confidence: 99%

Section: Technical Approach For Predicting Cavern Stabilitymentioning

confidence: 99%

Advanced Gas Storage Concepts: Technologies for the Future

Freeway¹,

Rogers

DeVries³

et al. 2000

View full text Add to dashboard Cite

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“…The Salado salt located immediately adjacent to the WlPP shafts is expected to be disturbed or damaged as a result of initial shaft excavation operations and time-dependent dilatant inelastic deformation that continues as long as the shaft remains open (Van Sambeek et al, 1993;Stormont, 1990a). Van Sambeek et al (1993) referred to the disturbed zone which forms upon mining as the initial DRZ and the subsequent disturbed zone which forms as a result of creep deformation and stress redistribution as the secondary D E .…”

Section: Description Of the Drzmentioning

confidence: 99%

“…Van Sambeek et al (1993) referred to the disturbed zone which forms upon mining as the initial DRZ and the subsequent disturbed zone which forms as a result of creep deformation and stress redistribution as the secondary D E . Both the magnitude and extent of damage in the Salado DRZ are time-dependent because the micromechanical deformation mechanism governing the dilatant inelastic deformation of the salt is a timedependent micro-fracturing mechanism (Chan et al, 1992).…”

Section: Description Of the Drzmentioning

confidence: 99%

“…Additionally, because the stress difference is a function of overburden pressure, the magnitude and extent of damage are also a function of depth. The Salado DRZ is expected to have the following 4-1 characteristics: (1) increased volume resulting from micro-or macro-fracturing, (2) increased fluid (gas or liquid) permeability, (:3) decreased brine saturation, (4) decreased load-bearing capacity, and (5) decreased pore pressure (Stormont, 1990a;Van Sambeek et al, 1993). Because of these properties, the DW: could act as a vertical flow path for brine and gas around the shaft seal.…”

Section: Description Of the Drzmentioning

confidence: 99%

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WIPP shaft seal system parameters recommended to support compliance calculations

Hurtado¹,

Knowles

Kelley³

et al. 1997

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Historical background on performance assessment for the Waste Isolation Pilot Plant

Rechard

2000

Reliability Engineering & System Safety

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Protection Agency (EPA) certified that the WIPP dkposal system complied with its regulations. The EPA's decision was primarily based on the results from a performance. assessment conducted in 1996, which is summarized in thk special issue of Reliability Engineerhg and System Safety. This performance assessment was the culmination of four prelirninaryperformance assessments conducted between 1989 and 1992. "This paper provides a historical setting and context for how the performance of the deep geologic repository at the WIPP was analyzed.' Also included is background on political forces .acting on the project.Key Words: performance assessmen~probabilistic risk assessment risk assessment; radioactive waste disposal; Waste Isolation Pilot PlanG history . '1.0 IntroductionIn 1998,25 years 'after selection of the "Delaware Basin in southeastern New Mexico as a~otential disposal site for radioactive waste, the U.S. Environmental Protection Agency (EPA) certified that the Waste Isolation Pilot Plant (WIPP), an underground geologic disposal system, complied with its regulations. This paper presents a historical summary of the system characterization, engineering analyses, and scientific investigations undertaken by the WIPP Project over the past 25 years and provides a context for the~esults presented in this special issue of Reliability Engineering and System Safety. Although it is mot .essentird to know the WIPP'S history to comprehend the engineering analysis, an understanding of the issues that the project faced can be helpful. Many paths were followed during these 25 years to discern which phenomena were important at the WIPP, and often these paths were initiated in Tesponse to evolving notions of what kind of :g@tific information was "significant, what level of understanding was required, and how society could use this scientific information to decide whether deep geologic disposal of nuclear waste was acceptable.1-3/9/99 Draft \. DISCLAIMERPortions of this document may be illegible in electronic image products. Images are produced from the best available original document... .- Characterization of WIPP Disposal SystemThe choice of New Mexico as a potential disposal site for nuclear waste in 1973 (Claibome and Gera, 1974) was one in a series of episodes in which New Mexico had figured prominently with regard to nuclear phenomena. In 1942, the Manhattan Engineering Dkrnct selected New Mexico as the location (including what are known now asLos Alamos National Laboratory and Sandia National Laboratories) for assembling the scientists, engineers, and technicians who would develop the fist atomic bomb. As a direct consequence of that development, the first atomic explosion took place in 1945 in the desert near Alamogordo, New Mexico (Serber, 1992). Sixteen years later, in 1961, scientists with the Gnome Project detonated a device in the Delaware Basin in bedded salt near Carlsbad, New Mexico, as part of the Plowshare Program, which was exploring nonmilitary uses of nuclear explosives (Gard, 1968).After a potential...

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Seal design alternatives study

Cited by 9 publications

References 15 publications

Advanced Gas Storage Concepts: Technologies for the Future

Advanced Gas Storage Concepts: Technologies for the Future

WIPP shaft seal system parameters recommended to support compliance calculations

Historical background on performance assessment for the Waste Isolation Pilot Plant

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