A specialized ROV for inspection of salt dome caverns

Ballou, P.

doi:10.1109/oceans.1998.726339

Cited by 5 publications

(4 citation statements)

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“…In standard uses, solution mined caverns are never entered by personnel or by large equipment; they are connected only to the drilled and cased well, which is typically 25-45 cm diameter but plausibly larger. Equipment, typically sonar logging equipment and fluid tubing, but in one case a remotely-operated inspection submarine [10], can be lowered down the well. Is wellbore-only-access a constraint on future physics uses, too?…”

Section: Pressurized Cavern Technologies 21 Solution-mined Cavernsmentioning

confidence: 99%

High-pressure TPCs in pressurized caverns: opportunities in dark matter and neutrino physics

Monreal¹

2022

Preprint

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The natural gas and hydrogen storage industries have experience creating huge, pressurized underground spaces. The most common of these is "solution mining", a method for making brine-filled cavities in salt formations. Unlike conventionally-mined underground spaces, these spaces are (a) inexpensive to construct and operate, (b) naturally serve as pressure vessels, at size scales impossible to construct in a conventional lab, and (b) permit safe use of flammable and/or toxic materials. If various engineering challenges could be met, solution-mined caverns would allow unprecedentedly-large high pressure gas TPCs. Lined rock caverns (LRC) may permit high pressure TPCs of considerable size in more conventional spaces. In this whitepaper, we review some of the new physics opportunities available in these caverns and suggest an R&D program needed to realize them.

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Section: Pressurized Cavern Technologies 21 Solution-mined Cavernsmentioning

confidence: 99%

High-pressure TPCs in pressurized caverns: opportunities in dark matter and neutrino physics

Monreal¹

2022

Preprint

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“…ROVs have proven themselves capable, familiar, and cost-effective in marine construction, we generally assume they are the best option for caverns as well, despite some difficulties managing ballast. There is even a precedent for driving an ROV in a salt cavern [18]. ROVs do not carry heavy loads, so we need to either restrict ourselves to neutrally-buoyant objects or continue searching for a heavy-lifting system that can reach sideways in the cavern.…”

Section: Mechanical Infrastructurementioning

confidence: 99%

Underground physics without underground labs: large detectors in solution-mined salt caverns

Monreal

2014

Preprint

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A number of current physics topics, including long-baseline neutrino physics, proton decay searches, and supernova neutrino searches, hope to someday construct huge (50 kiloton to megaton) particle detectors in shielded, underground sites. With today's practices, this requires the costly excavation and stabilization of large rooms in mines. In this paper, we propose utilizing the caverns created by the solution mining of salt. The challenge is that such caverns must be filled with pressurized fluid and do not admit human access. We sketch some possible methods of installing familiar detector technologies in a salt cavern under these constraints. Some of the detectors discussed are also suitable for deep-sea experiments, discussed briefly. These sketches appear challenging but feasible, and appear to force few major compromises on detector capabilities. This scheme offers avenues for enormous cost savings on future detector megaprojects.

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“…For example, a 120 V DC microgrid supplied the 5 kW load of the small underwater remotely operated vehicle (ROV) described in [5]. Additionally, 200 V DC microgrids were considered as case studies in [6] and [7].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Performance Assessment of the Split-Pi Used as a Storage Converter in All the Possible DC Microgrid Scenarios. Part II: Simulation and Experimental Results

et al. 2021

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Bidirectional DC/DC converters such as the Split-pi can be used to integrate an energy storage system (ESS) into a DC microgrid providing manifold benefits. However, this integration deserves careful design because the ESS converter must behave like a stiff voltage generator, a non-stiff voltage generator, or a current generator depending on the microgrid configuration. Part I of this work presented a comprehensive theoretical analysis of the Split-pi used as an ESS converter in all the possible DC microgrid scenarios. Five typical microgrid scenarios were identified. Each of them required a specific state-space model of the Split-pi and a suitable control scheme. The present paper completes the study validating the theoretical analysis based on simulations and experimental tests. The chosen case study encompassed a 48 V, 750 W storage system interfaced with a 180 V DC microgrid using a Split-pi converter. It can represent a reduced-power prototype of terrestrial and marine microgrids. A prototypal Split-pi converter was realized in the lab, and several experimental tests were performed to assess the performance in each scenario. The results obtained from the experimental tests were coherent with the simulations and validated the study.

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A specialized ROV for inspection of salt dome caverns

Cited by 5 publications

References 0 publications

High-pressure TPCs in pressurized caverns: opportunities in dark matter and neutrino physics

High-pressure TPCs in pressurized caverns: opportunities in dark matter and neutrino physics

Underground physics without underground labs: large detectors in solution-mined salt caverns

Modeling and Performance Assessment of the Split-Pi Used as a Storage Converter in All the Possible DC Microgrid Scenarios. Part II: Simulation and Experimental Results

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