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Record Nr. |
UNISA990000315770203316 |
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Autore |
TRAUTNER, Tobias |
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Titolo |
Die Einmischung in innere Angelegenheiten und die Intervention als eigenständige Verbotstatbestände im Völkerrecht / Tobias Trautner |
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Pubbl/distr/stampa |
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Frankfurt am Main : Lang, 1999 |
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ISBN |
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Descrizione fisica |
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Collana |
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Europäische Hochschulschriften . reihe 2 , Rechtswissenschaft ; 2614 |
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Disciplina |
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Soggetti |
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Intervento <diritto internazionale> |
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Collocazione |
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XXIII.1.M. 309 (IG VIII 17 715) |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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2. |
Record Nr. |
UNINA9910555060703321 |
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Autore |
Perez Robert X. |
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Titolo |
Pump wisdom : essential centrifugal pump knowledge for operators and specialists / / Robert X. Perez |
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Pubbl/distr/stampa |
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Hoboken, New Jersey : , : Wiley, , [2021] |
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©2021 |
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ISBN |
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1-119-74823-2 |
1-119-74824-0 |
1-119-74819-4 |
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Edizione |
[Second edition.] |
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Descrizione fisica |
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1 online resource (275 pages) |
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Disciplina |
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Soggetti |
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Pumping machinery |
Electronic books. |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Note generali |
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Nota di contenuto |
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Cover -- Title Page -- Copyright Page -- Contents -- Preface -- Chapter 1 Principles of Centrifugal Process Pumps -- Pump Performance: Head and Flow -- Operation at Zero Flow -- Impellers and Rotors -- The Meaning of Specific Speed -- Process Pump Types -- Process Pump Mechanical Response to Flow Changes -- Recirculation and Cavitation -- The Importance of Suction Specific Speed -- What We Have Learned -- References -- Chapter 2 Pump Selection and Industry Standards -- Why Insist on Better Pumps -- ANSI and ISO vs. API Pumps -- What We Have Learned -- References -- Chapter 3 Foundations and Baseplates -- Securing Pumps in Place - With One Exception -- Why Not to Install Pump Sets in the As-Shipped Condition -- Conventional vs. Prefilled Baseplate Installations -- Epoxy Prefilled Baseplates -- How to Proceed If There Is No Access to Specialist Firms -- What We Have Learned: Checklist of Foundation and Baseplate Topics -- References -- Chapter 4 Piping, Stationary Seals, and Gasketing -- Pipe Installation and Support -- Sliding Supports and Installation Sequence Deserve Special Attention -- Monitoring Pipe Stress While Bolting Up -- Flange Leakage -- What to Do Prior to Gasket Insertion -- Spiral Wound and Kammprofile |
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Gaskets -- Pipe, Hydraulic Tubing or Flexible Connections? -- Gusseting -- Concentric vs. Eccentric Reducers -- Vibration Problems in Piping -- Proven Ways to Control Piping Vibration -- Addressing Piping Vibration Issues -- Small Bore Piping Issues -- What We Have Learned -- References -- Chapter 5 Rolling Element Bearings -- Bearing Selection Overview and Windage As a Design Problem -- Radial vs. Axial (Thrust) Bearings -- Oil Levels, Multiple Bearings and Different Bearing Orientations -- Upgrading and Retrofit Opportunities -- Bearing Cages -- Bearing Preload and Clearance Effects -- Bearing Dimensions and Mounting Tolerances. |
What We Have Learned -- References -- Chapter 6 Lubricant Application and Cooling Considerations -- Lubricant Level and Oil Application -- Issues with Oil Rings -- Pressure and Temperature Balance in Bearing Housings -- Cooling Not Needed on Pumps with Rolling Element Bearings -- Oil Delivery by Constant Level Lubricators -- Black Oil -- Lubricant Application As Oil Mist (Oil Fog) -- Desiccant Breathers and Expansion Chambers -- What We Have Learned -- References -- Chapter 7 Lubricant Types and Key Properties -- Lubricant Viscosities -- When and Why High Film Strength Synthetic Lubricants Are Used -- Lubricants for Oil Mist Systems -- What We Have Learned -- References -- Chapter 8 Bearing Housing Protection and Cost Justification -- Noncontacting Bearing Protector Seals -- Contacting Bearing Protector Seals -- How Venting and Housing Pressurization Affect Bearing Protector Seals -- Cost Justification Overview -- Advanced Bearing Housing (Bearing Protector Seal) Summary -- What We Have Learned -- References -- Chapter 9 Mechanical Sealing Options for Long Life -- Still Using Packing? -- General Overview of Mechanical Seals -- All Flush Plans Have Advantages and Disadvantages -- Always Obtain the Full Picture -- Seal Chamber Pumping Ring (Circulating Device) Technologies -- Lessons Apply to Many Services -- What We Have Learned -- References -- Chapter 10 Pump Operation -- Starting Centrifugal Pumps -- Surveillance of Pump Operation -- Optimum Pump Switching Interval -- Centrifugal Pump Shutdown -- Addressing Post Start-up Issues -- Avoiding Parallel Pump Operating Problems -- What We Have Learned -- References -- Chapter 11 Impeller Modifications and Pump Maintenance -- Maintenance Essentials -- Superior Maintenance Requires Upgrading -- Impeller Upgrading with Inducers -- Distance from Impeller Tip to Stationary Internal Casing Components. |
Impeller Trimming -- Impeller Wear Rings -- Vane Tip Overfiling and Underfiling -- Carbon Graphite Wear Rings and Bushings -- What We Have Learned -- References -- Chapter 12 Lubrication Management -- How Bad Is Water Contamination? -- Avoid Solids Contamination -- Avoid Questionable Oil Storage and Transfer Practices -- Periodic Audits -- What We Have Learned -- References -- Chapter 13 Pump Condition Monitoring: Pump Vibration, Rotor Balance, and Effect on Bearing Life -- Vibration and Its Effect on Bearing Life -- Monitoring Methods Differ -- Vibration Acceptance Limits -- Causes of Excessive Vibration -- Rotor Balancing -- What We Have Learned -- References -- Chapter 14 Drivers, Couplings, and Alignment -- Driver Selection -- Coupling Selection and Installation -- Installation and Removal -- Alignment and Quality Criteria -- Consequences of Misalignment -- Thermal Rise and Predefinition of Growth -- What We Have Learned -- References -- Chapter 15 Fits, Dimensions, and Related Misunderstandings -- Low Incremental Cost of Better Pumps -- Pump Pedestals and Bearing Housings Should Not Be Water-Cooled -- Summary of Bearing-Related Issues -- Constant Level Lubricators -- Bearing Housing Protector Seals ("Bearing Isolators") -- Motor |
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Lubrication Summary -- Mechanical Seal Issues -- Hydraulic Issues -- Impeller Hydraulics -- Mechanical Improvement or Upgrade Options -- Process Pump Repair Dimensions -- What We Have Learned -- References -- Chapter 16 Using Failure Statistics and Root Cause Analysis Findings to Guide Reliability Improvement Efforts -- Mean-Time-Between Failures and Repair Cost Calculations -- Performing Your Own Projected MTBF Calculations -- Older Pumps vs. Newer Pumps -- Reliability Reviews Start Before Purchase -- Structured Failure Analysis Strategies Solve Problems -- The "FRETT" Approach to Eradicating Repeat Failures of Pumps. |
Analyzing Pump Failure Data -- Why We Use Reliability Tools -- Cumulative Failure Trends -- Addressing Pump "Bad Actors" -- What We Have Learned -- References -- Chapter 17 Repair, Replace, or Modify? -- Repair or Replace? -- Repair and Spare Part Philosophies -- Making the Business Case for Centrifugal Pump Upgrades -- Payback Time Examples -- Example 17.1 -- Example 17.2 -- Some Final Advice on Upgrades -- Centrifugal Pump Hydraulic Rerates -- Rerate Case Study -- Replacing Existing Pump with an Entirely Different Model Pump -- What We Have Learned -- References -- Chapter 18 Centrifugal Pump Monitoring Strategies -- Pump Monitoring Recommendations Based on Criticality -- How to Use This Matrix -- Example 18.2: High Production Impact (Follow dashed arrows in Table 18.3) -- A Survey of Vibration Sensors -- Wireless Sensors -- Wired Sensors with Dynamic Outputs -- Wired Loop-Powered Vibration Transmitters with 4-20 mA Outputs -- Evaluating Sensor Information -- Vibration Monitoring Analysis Requirements -- More on Sensor Technology -- What We Have Learned -- References -- Chapter 19 Final Thoughts -- Index -- EULA. |
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3. |
Record Nr. |
UNINA9910712610503321 |
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Titolo |
Evaluation of I/M effectiveness using emission factors data: Phoenix vs. other low-altitude, non-California sites |
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Pubbl/distr/stampa |
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Emission Control Technology Division, Office of Mobile Source Air Pollution Control, Office of Air, Noise, and Radiation, U.S. Environmental Protection Agency |
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Ann Arbor, Michigan |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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