Cleaning of Internal Surfaces

Kuchař, Jiří; Kreibich, Viktor

doi:10.1007/978-3-030-16943-5_51

Cited by 2 publications

(4 citation statements)

References 8 publications

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“…When dry-cleaning power equipment composed of several types of material, care must be taken to ensure that the chemical does not damage any component. Poor qualification and ignorance of persons can result in damage to the entire cleaned system (Kuchar, Kreibich 2019). Dry cleaning is divided into: reactionary; and decontamination.…”

Section: Methods Of Cleaning the Devicesmentioning

confidence: 99%

“…The main sources of technical risks of power equipment are corrosion, erosion, fouling and mechanical damage. Originator of fouling can be divided into several types, and these are: crystallization and clogging, particle silting -sedimentation and alluvial particles, corrosive clogging, silting due to chemical reaction, biological clogging, freezing fouling, or a combination of previous types of fouling (Kazi 2012 andKuchar et al 2019).…”

Section: Summary Of Knowledge On Risks Of Power Equipmentmentioning

confidence: 99%

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Mitigating the Risks of Energetic Facilities by Cleaning Internal Surfaces

Kuchar,

Kreibich,

Prochazkova

et al. 2023

Proceeding of the 33rd European Safety and Reliability Conference

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The article deals with the mitigation of risks of energetic facilities caused by contamination of internal surfaces. To ensure reliability of facility, the internal surface must be cleaned and process of cleaning must be safe, which means that risk of process must be acceptable. For process risk determination, the checklist is used. The experiment shows chemical cleaning of the exchanger. In spite of ensuring the cleaning process safety, for achievement of acceptable risk of exchanger, which required by valid standard, the cleaning process must be carried out twice.

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Section: Methods Of Cleaning the Devicesmentioning

confidence: 99%

Section: Summary Of Knowledge On Risks Of Power Equipmentmentioning

confidence: 99%

Mitigating the Risks of Energetic Facilities by Cleaning Internal Surfaces

Kuchar,

Kreibich,

Prochazkova

et al. 2023

Proceeding of the 33rd European Safety and Reliability Conference

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show abstract

“…Therefore, we will consider in detail the latest achievements in this of technology development. Usually, friction pairs using the thermo-gas-dynamic principle of operation are used as contact dry mechanical seals [18,19,20,21]. An example is the double seal "Dura Seal GB-200" of "Durametallic Corporation" [22,23,24,25].…”

Section: Literature Reviewmentioning

confidence: 99%

“…According to the method of calculating the impulse seal on a liquid lubricant [20,21], obtained the equation of the balance of flow rates (1) in terms of conductivity:…”

Section: Fig 2 Geometric Dimensions Of the Rotating Sealing Ring With...mentioning

confidence: 99%

Calculation of the Operational Characteristics of the Impulse Gas-Barrier Face Seal

Kuznetsov,

Pandová

2023

Management Systems in Production Engineering

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The problem of reducing leaks along the pump or compressor shaft of pumped liquids and gases into the environment is very urgent. Serious difficulties have to be faced when sealing the shafts of machines that pump aggressive, toxic, explosive and fire-hazardous environments. According to modern occupational safety requirements, such pumps and compressors should use double seals with a barrier medium whose pressure exceeds the sealed one by 0.05-0.2 MPa. Currently, liquid-lubricated double mechanical seals are widely used in chemical production equipment, however, over the last decade of the 20th century, leading companies have developed a number of designs of double gas mechanical seals for pumps and chemical production devices, which significantly exceed liquid-lubricated seals in their performance characteristics. The vast majority of these seals use a gas-dynamic principle of operation, i.e. spiral, logarithmic, T-shaped or other micro grooves are made on the sealing faces of their rings, which, when rotated, create an additional gas dynamic force that ensures the functioning of these seals with a micron gap between the sealing pair. In this paper, the design, principle of operation and engineering methodology for calculating the main characteristics of a impulse gas barrier face seal, in which one pair of sealing rings performs the functions of a double mechanical seal, is considered. The design is simple, compact and, thanks to the more advanced principle of creating a gap between the sealing pair, is able to maintain operability in a wide range of sealing and barrier pressures. The existing experience of operating seals of this type on chemical production pumps has confirmed their high efficiency, reliability and safety.

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Cleaning of Internal Surfaces

Cited by 2 publications

References 8 publications

Mitigating the Risks of Energetic Facilities by Cleaning Internal Surfaces

Mitigating the Risks of Energetic Facilities by Cleaning Internal Surfaces

Calculation of the Operational Characteristics of the Impulse Gas-Barrier Face Seal

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