Impact of Flow Induced Vibration Acoustic Loads on the Design of the Laguna Verde Unit 2 Steam Dryer
|
|
- Hortense Barker
- 5 years ago
- Views:
Transcription
1 Impact of Flow Induced Vibration Acoustic Loads on the Design of the Laguna Verde Unit 2 Steam Dryer David R. Forsyth, Leslie F. Wellstein, Robert C. Theuret, Yan Han, Charles Rajakumar Westinghouse Electric Company LLC Cranberry Township, PA forsytdr@westinghouse.com;wellslf@westinghouse.com;theurerc@westinghouse.com; han1y@westinghouse.com; rajakuc@westinghouse.com César Amador Cabrera, Wendy Sosa Flores CFE Laguna Verde Central Nucleoelectrica Laguna Verde Km Carretera Cardel-Nautla Laguna Verde, Ver Mexico cesar.amador@cfe.gob.mx; wendy.sosa@cfe.gob.mx Summary Industry experience with Boiling Water Reactors (BWRs) has shown that increasing the steam flow through the main steam lines (MSLs) to implement an extended power uprate (EPU) may lead to amplified acoustic loads on the steam dryer, which may negatively affect the structural integrity of the component. The source of these acoustic loads has been found to be acoustic resonance of the side branches on the MSLs, specifically, coupling of the vortex shedding frequency and natural acoustic frequency of safety relief valves (SRVs). The resonance that results from this coupling can contribute significant acoustic energy into the MSL system, which may propagate upstream into the reactor pressure vessel steam dome and drive structural vibration of steam dryer components. This can lead to high-cycle fatigue issues. Lock-in between the vortex shedding frequency and SRV natural frequency, as well as the ability for acoustic energy to propagate into the MSL system, are a function of many things, including the plant operating conditions, geometry of the MSL/SRV junction, and placement of SRVs with respect to each other on the MSLs. Comisión Federal de Electricidad and Westinghouse designed, fabricated, and installed acoustic side branches (ASBs) on the MSLs which effectively act in the system as an energy absorber, where the acoustic standing wave generated in the side-branch is absorbed and dissipated inside the ASB. These ASBs have been very successful in reducing the amount of acoustic energy which propagates into the steam dome. In addition, modifications to the Laguna Verde Nuclear Power Plant (LVNPP) Unit 2 steam dryer have been completed to reduce the stress levels in critical locations in the dryer. The objective of this paper is to describe the acoustic side branch concept and the design iterative processes that were undertaken at Laguna Verde Unit 2 to achieve a steam dryer design that meets the guidelines of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (B&PV) Code Section III, Subsection NG high-cycle fatigue criteria and to ensure the safe operation of the steam dryer due to acoustic loads as part of the extended power uprate (EPU) from 2027 MWt to 2317 MWt yielding an increase in power of 14.3 percent. 1/9 Mexico Nuclear Society Conference Paper Rev. 2015
2 David R. Forsyth, et al, Impact Flow Induced Vibration Acoustic Loads on Design LV 2 Steam Dryer 1. INTRODUCTION Operating experience in Boiling Water Reactors (BWRs) has shown that steam flow through the main steam lines (MSLs) can cause acoustic pressure fluctuations due to the coincidence of vortex shedding frequencies and natural acoustic modes of safety relief valves (SRVs). The resonance that results from this coupling can contribute significant acoustic energy into the MSL system, which may propagate upstream into the reactor pressure vessel steam dome and drive structural vibration of steam dryer components. This can lead to high-cycle fatigue issues. Lock-in between the vortex shedding frequency and SRV natural frequency, as well as the ability for acoustic energy to propagate into the MSL system, are a function of many things, including the plant operating conditions, geometry of the MSL/SRV junction, and placement of SRVs with respect to each other on the MSLs. Evaluations have been performed to determine the acoustic loads due to possible resonance of any standpipes on the MSLs at Laguna Verde Unit 2. These evaluations involved multiple acoustic and structural analyses, scale model testing, and the collection of plant-specific data. Several computer codes which are both commercially-available and special-purpose codes developed in conjunction with the prediction and evaluation of acoustic loads were used in the dryer evaluations. The results of these evaluations indicated that the steam flow conditions at Laguna Verde Unit 2 are such that the original as-built plant will operate in a region susceptible to acoustic resonance of the SRVs. As a result, Comisión Federal de Electricidad (CFE) and Westinghouse designed, fabricated, and installed acoustic side branches (ASBs) on the MSLs and completed modifications to the critical stress locations on the steam dryer to ensure that the structural integrity of the steam dryer at EPU conditions is maintained. 2. DESIGN CONSIDERATIONS Reactor internals components, including the steam dryer, must be designed to meet the requirements of the applicable General Design Criteria, commensurate with their safety function. Although some internals components, such as the steam dryers, perform no safety function, they must retain their structural integrity to avoid generation of loose parts that may adversely impact the capability of other systems, structures, and components to perform their safety function. In addition to the installation of acoustic side branches at the MSL/SRV locations, to alter the dynamic steam flow effects in the MSLs and in the reactor pressure vessel steam dome, a number of steam dryer design changes were incorporated. The major steam dryer design changes were: a) steam dryer lifting rod bracket modifications, b) steam dryer drain channel weld reinforcement, and c) lower ring guide rod bracket weld reinforcement. These steam dryer modifications were implemented during the Laguna Verde Unit outage. The steam dryer locations that required modifications are shown in Figure 1. In accordance with the intent of BWRVIP-181-A (Reference 1), the steam dryer modifications were considered a Category B repair. The guidelines from BWRVIP-84 (Reference 2) were utilized for the steam dryer modification material specification, fabrication, and implementation. 2/9 Mexico Nuclear Society Conference Paper Rev. 2015
3 a b c Figure 1. Overall Laguna Verde Unit 2 steam dryer modifications installed a) lifting rod bracket modifications b) drain channel weld reinforcement c) lower ring guide rod bracket weld reinforcement 3/9 Mexico Nuclear Society Conference Paper Rev. 2015
4 David R. Forsyth, et al, Impact Flow Induced Vibration Acoustic Loads on Design LV 2 Steam Dryer 3. MSL/SRV AND STEAM DRYER MODIFICATIONS 3.1 Incorporation of Acoustic Side Branches Since a significant amount of acoustic energy in the MSL system was propagating upstream into the reactor pressure vessel steam dome and impinging on the outer hood of the steam dryer, one of the first design considerations was to install a series of acoustic side branches at selected MSL/SRV locations. The addition of a side branch to the standpipe, schematically shown in Figure 2, effectively shifts the resonant frequency of the standpipe, therefore eliminating the acoustic standing wave generated by vortex shedding expected at EPU flow conditions. In addition, the ASB is filled with mesh screens to provide a damping effect of the acoustic energy input to the system. Designing the type and quantity of mesh screens for the specific application, along with the proper dimensions of the ASB, allows the design of a customized ASB which is capable of a narrow-band suppression of the acoustic resonance frequency of interest. The effect of the ASB on the pressure response of an SRV is shown in Figure 3. It is important to note that the incorporation of the acoustic side branches on the SRVs does not impact the response or safety functions of the SRV. In addition, the ASBs do not impact the pressure drop and flow from the reactor to the inlet of the SRV. The pressure boundary piping of the ASBs was designed to the original code of construction, and the pressure piping and fittings material is equivalent to the existing main steam line material. Evaluations were performed to ensure that the structural integrity and pressure boundary integrity design function of the main steam line was not adversely affected. The incorporation of the acoustic side branches did require a minor change to the Laguna Verde Unit 2 in-service inspection program. Safety Relief Valve Acoustic Side Branch Main Steam Line Figure 2. Schematic of an acoustic side branch design 4/9 Mexico Nuclear Society Conference Paper Rev. 2015
5 Pressure response WITHOUT ASB Pressure response WITH ASB INSTALLED Figure 3. Effectiveness of an acoustic side branch design 3.2 Steam Dryer Lifting Rod Bracket Modification Each of the four (4) dryer lifting rods (see Figure 4) is supported by four (4) lifting rod brackets. The upper two (2) lifting rod brackets have a reinforcing bracing hardware welded above and below the brackets. The bottom two (2) brackets did not require additional bracing hardware, but their welds were required to be reinforced. Figure 4 shows the locations of the brackets on a lifting rod. The four (4) brackets are secured to the dryer bank end plate by fillet welds. The installed configuration of the lifting rod bracket hardware and reinforced welds (highlighted in blue) are presented in Figure 5. 5/9 Mexico Nuclear Society Conference Paper Rev. 2015
6 David R. Forsyth, et al, Impact Flow Induced Vibration Acoustic Loads on Design LV 2 Steam Dryer Figure 4. Lifting bar bracket reinforcing hardware and weld buildup locations Figure 5. Steam dryer lifting rod bracket modifications installed and highlighted 6/9 Mexico Nuclear Society Conference Paper Rev. 2015
7 3.3 Lower Ring Guide Rod Bracket Weld Reinforcement The Laguna Verde Unit 2 steam dryer has two (2) guide rod brackets for the vessel guide rods. Each guide bracket has two (2) gusseted vertical plates welded to the lower dryer ring. Each plate has two (2) vertical fillet welds that run the length of the plate on either side. The existing vertical welds have reinforcing fillet welds along their full lengths, making a total of eight (8) vertical weld modifications (4 per guide bracket). These reinforcing fillet welds doubled the size of the original fillet welds. Figure 6 shows these vertical welds (indicated in blue) on one of the guide rod brackets. Figure 6. Guide rod bracket weld buildup location 7/9 Mexico Nuclear Society Conference Paper Rev. 2015
8 David R. Forsyth, et al, Impact Flow Induced Vibration Acoustic Loads on Design LV 2 Steam Dryer 3.4 Steam Dryer Drain Channel Weld Reinforcement The Laguna Verde Unit 2 steam dryer has four (4) drain channels, each secured to the dryer skirt by two (2) vertical welds. Although some of the drain channel/skirt components are below the water line, a substantial portion of the drain channel experiences acoustic-related loadings that are transferred downward. During the design/analysis process, significant stress levels were calculated in the drain channel regions. To reduce these stress levels, the bottom portions of these welds were replaced with a stronger weld, for a total of eight (8) welds that were modified. The bottom few inches of these vertical welds were removed and replaced with full penetration groove welds. Additionally, these welds were further reinforced with fillet welds along the inside and outside of the drain channels. Figure 7 shows these weld buildup locations on the drain channels on one half of the dryer. Figure 7. Drain channel weld buildup locations on one side 8/9 Mexico Nuclear Society Conference Paper Rev. 2015
9 4. CONCLUSIONS Comisión Federal de Electricidad (CFE) and Westinghouse have successfully performed modifications to the Laguna Verde Nuclear Power Plant Unit 2 steam dryer and to the main steam line/safety relief valves locations to mitigate the impact of acoustic resonances of the side branches on the main steam line and their effect on the structural integrity of the steam dryer. The acoustic resonance of the side branches on the main steam lines (MSLs) was due to the coupling of the vortex shedding frequency, and natural acoustic frequency of safety relief valves (SRVs) which have been proactively mitigated by the installation of acoustic side branches on selected SRVs in the MSLs. In addition, modifications were made to the steam dryer at critical stress locations to reduce the stresses at those locations due to acoustic loads. With these changes, the steam dryer design meets the guidelines of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (B&PV) code, Section III, Subsection NG high-cycle fatigue criteria for extended power uprate (EPU) conditions, ensuring the structural integrity of the steam dryer for a 14.3 percent power increase from 2027 MWt to 2317 MWt. REFERENCES 1. BWRVIP-181-A, BWR Vessel and Internals Project, Steam Dryer Repair Design Criteria, Final Report July, BWRVIP-84, Rev. 2, BWR Vessel and Internals Project, Guidelines for Selection and Use of Materials for Repairs to BWR Internal Components, Final Report September /9 Mexico Nuclear Society Conference Paper Rev. 2015
Acoustic Resonance in Nuclear Boiling Water Reactors
Acoustic Resonance in Nuclear Boiling Water Reactors Thomas G. Scarbrough Division of Engineering Office of New Reactors U.S. Nuclear Regulatory Commission Pennsylvania State University Center for Acoustics
More informationSNAP, CRACKLE, & POP: THE BWR POWER UPRATE EXPERIMENT
issue brief SNAP, CRACKLE, & POP: EPU. The Nuclear Regulatory Commission believes it stands for Extended Power Uprate where the agency relicenses a nuclear power reactor to operate at a significantly higher
More informationFinite Element Analysis, Harmonic Analysis and Modal Analysis of the Car Floor by Using With and Without Stiffener
Finite Element Analysis, Harmonic Analysis and Modal Analysis of the Car Floor by Using With and Without Stiffener Mohan Kumar G R Assistant Professor, Department of Automobile Engineering, New Horizon
More informationFREQUENCY SHIFTING SIGNAL DETECTION AND ANALYSIS OF BOILER TUBE LEAKS
18 TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS FREQUENCY SHIFTING SIGNAL DETECTION AND ANALYSIS OF BOILER TUBE LEAKS GJ. Jung 1 *, YS. Cho 1, YC. Kim 1, SH.Baek 1, JH. Sung 2 1 KEPRI, Korea Electric
More informationRESULTS FROM HOUSE APPLIANCE SAFETY AND DEPRESSURIZATION TESTS CONDUCTED ON SINGLE FAMILY HOUSES UNDERGOING SOUND INSULATION
RESULTS FROM HOUSE APPLIANCE SAFETY AND DEPRESSURIZATION TESTS CONDUCTED ON SINGLE FAMILY HOUSES UNDERGOING SOUND INSULATION DL Bohac * Center for Energy and Environment, Minneapolis, MN USA ABSTRACT Extensive
More informationICONE DRAFT Proceedings of the 16th International Conference on Nuclear Engineering ICONE16 May 11-15, 2008, Orlando, Florida, USA
DRAFT Proceedings of the 16th International Conference on Nuclear Engineering ICONE16 May 11-15, 2008, Orlando, Florida, USA ICONE16-48187 THERMAL CYCLE EVALUATION FOR FEEDWATER HEATER OUT OF SERVICE CONDITION
More informationHigh Capacity Instantaneous Steam Fired Water Heater
MODEL F High Capacity Instantaneous Steam Fired Water Heater Features Compact High Capacity Design Packaged System Water heater is factory assembled on an all welded steel mounting frame to save time and
More informationMetal Turbine Exhaust Joints An analysis of metal and fabric GTX expansion joints
The expansion joints, for a large Westinghouse turbine, are used between a hot turbine diffuser and cold HRSG inlet; the internal gas temperature is 1100ºF average. The two fabrics have thermal monitors
More informationCASE STUDY ANALYSIS OF CENTRIFUGAL FAN HIGH AMPLITUDE VIBRATION. Ken Singleton
CASE STUDY ANALYSIS OF CENTRIFUGAL FAN HIGH AMPLITUDE VIBRATION Ken Singleton Manager KSC Consulting LLC, Bristol VA ksingleton@vibrationconsulting.com Bob McGinnis. P.E. McGinnis Engineering LLC, Kingsport
More informationCONSIDERATIONS IN CONVERTING A DUAL SHELL OR A DUAL PRESSURE COAL FIRED PLANT CONDENSER INTO A COMBINED CYCLE PLANT CONDENSER
Proceedings of the ASME 2013 Power Conference POWER2013 July 29-August 1, 2013, Boston, Massachusetts, USA POWER2013-98062 CONSIDERATIONS IN CONVERTING A DUAL SHELL OR A DUAL PRESSURE COAL FIRED PLANT
More informationFiber SenSys. Fiber Optic Perimeter Detection Systems. Substation Physical Security Best Practices Baltimore 2017
Fiber SenSys Fiber Optic Perimeter Detection Systems Substation Physical Security Best Practices Baltimore 2017 Detection Sensor Deployment Options for Various Substation Barrier Systems Rod Hurley North
More informationS&T HEAT EXCHANGERS Part II: Main Parts, Conical Transitions, Shell & Heads, Nozzle Design.
S&T HEAT EXCHANGERS Part II: Main Parts, Conical Transitions, Shell & Heads, Nozzle Design. STUDY NOTES Instructor: Javier Tirenti training@arvengconsulting.com www.arvengconsulting.com Table of contents
More informationIndustrial Fiberglass Specialties, Inc. 521 Kiser Street Dayton, OH Tel: Fax:
06-26-00 Page #1 of 6 This guide provides specific information about the material requirements, design criteria, assembly and testing methods recommended to assure a successful steam condensate return
More informationBHA Powerwave Acoustic Cleaning Systems Powerful cleaning to help increase performance
BHA Powerwave Acoustic Cleaning Systems Powerful cleaning to help increase performance BHA Powerwave acoustic cleaning systems can significantly improve the cleaning process for air pollution control equipment
More informationSECTION COMPRESSED AIR SYSTEM. A. Pipe and pipe fittings, including valves, unions and couplings.
SECTION 15481 COMPRESSED AIR SYSTEM PART 1 - GENERAL 1.1 SECTION INCLUDES A. Pipe and pipe fittings, including valves, unions and couplings. B. Air compressor. C. After cooler. D. Refrigerated air dryer.
More informationIntroduction of the Design Features of Cryogenic Pumps and Expanders for FSRU Applications
Introduction of the Design Features of Cryogenic Pumps and Expanders for FSRU Applications Enver Karakas Project Engineering Manager Ebara International Corporation Cryodynamics Division Sparks, NV USA
More informationSodium Heat Pipes for Spacecraft Fission Power Generation
Sodium Heat Pipes for Spacecraft Fission Power Generation Derek Beard 1, Calin Tarau 2, and William G. Anderson 3 Advanced Cooling Technologies, Lancaster, PA, 17601 This paper reports on the final stage
More informationFisher DMA, DMA-AF, DMA-AF-HTC, DSA, and DVI Desuperheaters
D144X012 Product Bulletin September 17 Fisher DMA, DMA-AF, DMA-AF-HTC, DSA, and DVI Fisher DMA, DMA-AF, DMA-AF-HTC, DSA, and DVI desuperheaters can be used in many applications to efficiently reduce the
More informationMODELING THE SEATTLE STEAM CO. DISTRIBUTION SYSTEM WITH RELAP5-3D
MODELING THE SEATTLE STEAM CO. DISTRIBUTION SYSTEM WITH RELAP5-3D Richard R. Schultz Idaho National Engineering & Environmental Laboratory PO Box 1625 Idaho Falls, ID 83415 ABSTRACT Steam generation is
More informationSPRAY COOLING BOF HOODS by David A. Lehr, Senior Engineer UCAR Carbon Company Inc., Parma, OH
SPRAY COOLING BOF HOODS by David A. Lehr, Senior Engineer UCAR Carbon Company Inc., Parma, OH INTRODUCTION UCAR1!1 Spray-Cooled Systems are furnace components that utilize a nonpressurized water cooling
More informationSAMPLE SPECIFICATION FOR RIELLO ARRAY MODULATING BOILER
SAMPLE SPECIFICATION FOR RIELLO ARRAY MODULATING BOILER PART 1 GENERAL 1.01 RELATED DOCUMENTS A. ANSI Z21.13 American National Standard for Gas-Fired Low Pressure Steam and Hot Water Boilers B. ASME Section
More informationSTEAM SYSTEMS TOP SAFETY ITEMS FOR STEAM OPERATIONS. July, 2018
STEAM SYSTEMS TOP SAFETY ITEMS FOR STEAM OPERATIONS July, 2018 Inveno Engineering LLC Tampa, Florida www.invenoeng.com kelly.paffel@invenoeng.com 239-289-3667 graham.thorsteinson@invenoeng.com 404-375-0785
More informationSoot Mitigation Strategies
Soot Mitigation Strategies Walter P. Drosjack, P.E. David L. Oar, P.E., F.S.F.P.E. 32 nd Nuclear Air Cleaning Conference June 18-19, 2012 Who is URS? URS is one of the world s largest engineering, construction
More informationYankee Dryer Safety. Program
Program Yankee Program Objectives Personnel protection Loss Prevention Asset Optimization What is a Yankee? It is a Cast iron Pressure vessel In compliance with American Society of Mechanical Engineering
More informationLOW-NOX BURNER RETROFIT CHALLENGE
LOW-NOX BURNER RETROFIT CHALLENGE By Craig Lieb Applications Engineer Zeeco, Inc. Rutland, UK Ryan Roberts Project Engineering Manager Zeeco, Inc. Broken Arrow, OK, U.S.A. Ryan Roberts has more than 20
More informationPerformance. Placement In A Cabinet. The BeBop can be placed horizontally or vertically within a cabinet.
BeBop 3/8x16 insert on back fits OmniMount 20 Series 7" 10-5/8" 10-1/2" 50 watts 99dB 94dB 91dB 87dB 100 watts 102dB 97dB 94dB 90dB Vertically Up from tweeter (35 ) 2' 4' 8.5' 17' Down from tweeter (15
More informationRefinery Vacuum Towers. State of the Art. (Extended Abstract)
Paper 357b Refinery Vacuum Towers State of the Art (Extended Abstract) Andrew W. Sloley CH2M HILL 21 Bellwether Way, Unit 111 Bellingham, WA 98225 Prepared for Presentation at the American Institute of
More informationGASEOUS HYDROGEN SYSTEMS
CHAPTER 7 GASEOUS HYDROGEN SYSTEMS SECTION 701 GENERAL 701.1 Scope. The installation of gaseous hydrogen systems shall comply with this chapter and Chapters 30 and 35 of the Fire Compressed gases shall
More informationRemote Monitoring of Offshore Structures using Acoustic Emission.
11th European Conference on Non-Destructive Testing (ECNDT 2014), October 6-10, 2014, Prague, Czech Republic Remote Monitoring of Offshore Structures using Acoustic Emission. More Info at Open Access Database
More informationI&C Upgradation and Modernization at CHASNUPP 1 & 2. Presented By: Waseem Uddin Farooqi PAEC, Pakistan
I&C Upgradation and Modernization at CHASNUPP 1 & 2 Presented By: Waseem Uddin Farooqi PAEC, Pakistan Contents of Presentation Nuclear Power in Pakistan I&C Overview of CHASNUPP-1 & 2 (C-1 & C-2) I&C Upgradation
More informationresearch highlight Assessment of Suite Compartmentalization and Depressurization in New High-Rise Residential Buildings
research highlight October 2005 Technical Series 05-112 Assessment of Suite Compartmentalization and Depressurization in New High-Rise Residential Buildings INTRODUCTION The provision of airtight interior
More informationHigh Temperature Water-Titanium Heat Pipes for Spacecraft Fission Power
High Temperature Water-Titanium Heat Pipes for Spacecraft Fission Power Rebecca Hay 1 and William G. Anderson 1 1 Advanced Cooling Technologies, 1046 New Holland Ave. Lancaster, PA 17601 717-295-6104;
More informationUnderstanding. Combustible Dust Hazards: Basic Measures to Ensure the Safety of Combustible Dust Handling Operations
Understanding Combustible Dust Hazards: Basic Measures to Ensure the Safety of Combustible Dust Handling Operations Michigan Safety Conference April 11, 2017 Mike Snyder PE CSP CFPS Vice President Organizational
More informationUp To 99% Thermal Efficiency HIGH EFFICIENCY COMMERCIAL BOILERS WITH MODBUS PROTOCOL, CASCADING SEQUENCER AND FRONT-END LOADING CAPABILITY
HIGH EFFICIENCY COMMERCIAL BOILERS WITH MODBUS PROTOCOL, CASCADING SEQUENCER AND FRONT-END LOADING CAPABILITY 7 INPUTS FROM 1.5 TO 5.0 MILLION BTU/HR FIRING RATE MODULATION UP TO 25:1 DIRECT-VENT FLEXIBILITY
More informationExperimental investigation of the dynamic thermohydraulic behaviour of vertical tube reboilers
Journal of Physics: Conference Series Experimental investigation of the dynamic thermohydraulic behaviour of vertical tube reboilers To cite this article: M Kessler and S Kabelac 2012 J. Phys.: Conf. Ser.
More informationPressure Vessel Design Guides And Procedures
We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with pressure vessel design
More informationPressure Vessel Design Guides And Procedures
We have made it easy for you to find a PDF Ebooks without any digging. And by having access to our ebooks online or by storing it on your computer, you have convenient answers with pressure vessel design
More informationSperansa 2008: Round table: Nuclear and sustainable development Universitad Politecnica de Valencia \UPV - Passive safety systems -
Universitad Politecnica de Valencia \UPV - Passive safety systems - complete+annex.doc 1 1.1 Definition of Passive Safety Systems...3 2. Passive safety systems for core decay heat removal....4 2.1 Pre-Pressurized
More informationLONGEVITY SOLUTIONS FEEDWATER HEATERS CONDENSERS HEAT EXCHANGERS PRESSURE VESSELS AIR PREHEATERS ISOLATION DAMPERS AFTERMARKET SERVICES AND PARTS
LONGEVITY SOLUTIONS FEEDWATER HEATERS CONDENSERS HEAT EXCHANGERS PRESSURE VESSELS AIR PREHEATERS ISOLATION DAMPERS AFTERMARKET SERVICES AND PARTS EXPERIENCE. KNOW-HOW. COMMITMENT. SPX HEAT TRANSFER AFTERMARKET
More informationNorthern Branch Corridor DEIS December 2011
16 Floodplains 161 Chapter Overview 1611 Introduction The flowing chapter identifies floodplains found within the Northern Branch Corridor in accordance with Executive Order 11988, Floodplain Management
More informationARTICLE VI: SITE PLAN REVIEW
Section 6.01 - Site Plan Review (All Districts) ARTICLE VI: SITE PLAN REVIEW Site plans give the Planning commission an opportunity to review development proposals in a concise and consistent manner. The
More informationBRIDGECLIMB SYDNEY REDUCING TONAL NOISE FROM SAFETY LATCHES
BRIDGECLIMB SYDNEY REDUCING TONAL NOISE FROM SAFETY LATCHES Conrad M. Weber Heggies Australia Pty Ltd, Sydney, Australia Abstract Each year, thousands of Sydneysiders and visitors climb Sydney s most prominent
More informationDevelopment Of A Low-Cost Heat Pump Water Heater For Residential Applications
Development Of A Low-Cost Heat Pump Water Heater For Residential Applications Robert A. Zogg, Arthur D. Little, Inc., Cambridge, MA Edward Barbour, Arthur D. Little, Inc., Washington, DC Brian J. Nowicki,
More informationMiniCube. When Used In Theaters. Performance. Dimensions. When Used For Distributed Audio. Predictive Placement. 6" wide. 8-1/2" deep.
MiniCube Dimensions 3/8 x 16 insert accepts OmniMount 20 Series brackets. 6" wide Predictive 8-1/2" deep 9-1/2" SPL How loud will one speaker play, in db, with given amplifier power. Amp Power 3' 6' 12'
More informationC. ASME Compliance: Fabricate and label water chiller heat exchangers to comply with ASME Boiler and Pressure Vessel Code: Section VIII, Division 1.
SECTION 236426 - ROTARY-SCREW WATER CHILLERS PART 1 - GENERAL 1.1 SUMMARY A. This Section includes packaged, water cooled or air cooled as scheduled, electric-motor-driven, rotary-screw water chillers
More informationNOVEL COMPACT SORPTION GENERATORS FOR HEAT PUMP APPLICATIONS
- 1 - NOVEL COMPACT SORPTION GENERATORS FOR HEAT PUMP APPLICATIONS S.J. Metcalf, Z. Tamainot-Telto (1) and R.E. Critoph School of Engineering, University of Warwick, Coventry CV4 7AL, UK Abstract: A new
More informationKERONE (AN ISO 9001: 2008 CERTIFIED COMPANY)
KERONE (AN ISO 9001: 2008 CERTIFIED COMPANY) Role of Agriculture and Allied Sector in Indian Economy Largest economic sector, plays a significant role in socio-economic development of India. More than
More informationinter.noise 2000 The 29th International Congress and Exhibition on Noise Control Engineering August 2000, Nice, FRANCE
Copyright SFA - InterNoise 2000 1 inter.noise 2000 The 29th International Congress and Exhibition on Noise Control Engineering 27-30 August 2000, Nice, FRANCE I-INCE Classification: 7.9 SOUND QUALITY AND
More informationCEILING SPEAKER SYSTEMS F-2352CU2
INSTRUCTION MANUAL CEILING SPEAKER SYSTEMS F-2322CU2 F-2352CU2 F-2322CU2 F-2352CU2 Please follow the instructions in this manual to obtain the optimum results from this unit. We also recommend that you
More informationSTAFFORD TRACT NORTH OF US90A 1.0 INTRODUCTION 1.1 OBJECTIVE
1.0 INTRODUCTION 1.1 OBJECTIVE This report, prepared for submittal to TxDOT, analyzes existing and proposed detention facilities draining into the TxDOT US90A storm sewer system. The results of the detailed
More informationDevelopment of Large Size Hybrid Fan
Technical Paper Toshihiko Nishiyama Kengo Koshimizu Keiichi Inaba A lot of small fans with three-dimensional, wide chord length, forward swept figure, and/or shroud ring have been developed and manufactured
More informationTENTH INTERNATIONAL CONGRESS ON SOUND AND VIBRATION, ICSV10 REAL TIME CONTROL OF SOUND PRESSURE AND ENERGY DENSITY IN A MINING VEHICLE CABIN
Colin Hansen, page number 1 TENTH INTERNATIONAL CONGRESS ON SOUND AND VIBRATION, ICSV10 REAL TIME CONTROL OF SOUND PRESSURE AND ENERGY DENSITY IN A MINING VEHICLE CABIN Colin H. Hansen, Daniel A. Stanef
More informationB. Galvanized-Steel-Sheet Sleeves: inch minimum thickness; round tube closed with welded longitudinal joint.
(816) 373-4878 U1208-01/FAI29-029 (573) 751-2624 SECTION 2 105 17 - SLEEVES AND SLEEVE SEALS FOR FIRE-SUPPRESSION PIPING PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the
More informationFIRE PROBABILISTIC SAFETY ASSESSMENT FOR KUDANKULAM NPP IN INDIA. G.Tokmachev. Atomenergoproekt, Bakuninskaya 7, Moscow, Russia
In: Proceedings of the 3rd International Conference on Reliability, Safety and Hazards ICRESH-05, Mumbai, India, December 1-3, 2005. "Advances in Risk-Informed Technology", Narosa Publishing House, 2006,
More informationVISUAL PERFORMANCE SERIES VP10SUB NC VP10SUB NC ENCLOSURE DSP AMPLIFIER VP12SUB NC VP12SUB NC ENCLOSURE DSP AMPLIFIER
VISUAL PERFORMANCE VP10SUB NC VP10SUB NC ENCLOSURE DSP 2-150 AMPLIFIER NC = NEW CONSTRUCTION SERIES VP12SUB NC VP12SUB NC ENCLOSURE DSP 2-750 AMPLIFIER Product Family Overview From the company that invented
More informationHigh Pressure Manways CODAP 2000 & PED 96/23/CE
High Pressure Manways CODAP 2000 & PED 96/23/CE Alchem offer a range of High-Pressure manways designed and built to comply with the European Pressure Directive 97/23/CE and also with the pressure vessel
More informationIntroduction. Positioning
Owner s manual Introduction Positioning Congratulations on choosing the Acoustic Energy AEGIS EVOLUTION Series a range of powerful loudspeakers which feature metal diaphragm technology and are capable
More informationHIGH EFFICIENCY COMMERCIAL BOILERS
HIGH EFFICIENCY COMMERCIAL BOILERS CON X US REMOTE CONNECT MODBUS AND BACnet MSTP PROTOCOL CASCADING SEQUENCER WITH CASCADE REDUNDANCY 5 INPUTS FROM 2.5 TO 5.0 MILLION BTU/HR UP TO 20:1 TURNDOWN RATIO
More informationApplication of Radioactive Particle Tracking (RPT) and Densitometry for Measuring Liquid Velocity Fields and Void Fraction in Convective Boiling Flows
ID: B01-04 Application of Radioactive Particle Tracking (RPT) and Densitometry for Measuring Liquid Velocity Fields and Void Fraction in Convective Boiling Flows Ashutosh Yadav 1, Harish Jagat Pant 2 and
More informationQualification Testing of Nuclear High Voltage Splice (NHVS) Title Pages: 49. Report Number: EDR-5391 Rev. 0 06/15/05. Approved by: Signature: Date:
Energy Report EDR-5391 Qualification Testing of Nuclear High Voltage Splice (NHVS) Title Pages: 49 Qualification Testing of Nuclear High Voltage Splice (NHVS) Enclosures: Report Number: Date: EDR-5391
More informationCEILING SPEAKER SYSTEM
INSTRUCTION MANUAL CEILING SPEAKER SYSTEM F-2852C TABLE OF CONTENTS 1. SAFETY PRECAUTIONS... 2 2. GENERAL DESCRIPTION... 3 3. FEATURES... 3 4. NOMENCLATURE AND DIMENSIONS... 4 5. INSTALLATION... 5 7. REPAINTING
More informationHEAT GENERATION 1.01 RELATED CORNELL DESIGN AND CONSTRUCTION STANDARDS. B. Section HVAC Basic Materials and Methods
230520 HEAT GENERATION Cornell s Design and Construction Standards provide mandatory design constraints and acceptable or required products for all construction at Cornell University. These standards are
More informationSECTION (15486) - FUEL-FIRED, DOMESTIC WATER HEATERS
SECTION 22 34 00 (15486) - FUEL-FIRED, DOMESTIC WATER HEATERS System shall provide a complete hot water return throughout the entire system with balancing (flow control) valves not less than 10 feet from
More informationProducts for. Nuclear Power Applications
Products for Nuclear Power Applications Caloritech electric heaters, heating elements and heating accessories are well-known in the industry for their quality, reliability, performance and versatility.
More informationDesign Optimization of Evaporator Clip by FEA (ANSYS)
Design Optimization of Evaporator Clip by FEA (ANSYS) Giridhar Kumar Abhijit Kulkarni Global Technology and Engineering Centre,Whirlpool of India Ltd. Pune, India Abstract Structural rigidity of refrigerator
More informationCEILING SPEAKER SYSTEMS F-2352C
INSTRUCTION MANUAL CEILING SPEAKER SYSTEMS F-2322C F-2352C F-2322C F-2352C TABLE OF CONTENTS 1. SAFETY PRECAUTIONS... 2 2. GENERAL DESCRIPTION... 3 3. FEATURES... 3 4. NOMENCLATURE AND DIMENSIONS... 4
More informationAdvanced Radiation Measurement Solutions
GE Energy Advanced Radiation Measurement Solutions Reuter Stokes Radiation Measurement Solutions GE Energy, Edison Park in Twinsburg, OH, USA World-class research and development Beginning with the first
More informationHomestyle Stacked Washer/ Dryer
Homestyle Stacked Washer/ Dryer Parts Refer to Page 3 for Model Numbers SWD441C_801998 www.alliancelaundry.com Part No. 801998R6 January 2018 Table of Contents Title Page Parts Ordering Information...
More informationNOx REDUCTION EXPERIENCE ON NATURAL GAS FIRED TURBO FURNACES
NOx REDUCTION EXPERIENCE ON NATURAL GAS FIRED TURBO FURNACES by D. E. Dorman, Staff Engineer DB Riley, Inc. Presented at the International Joint Power Generation Conference Miami Beach, Florida July 23-25,
More informationEssex County College - West Essex Campus Addition And Renovations dib # / SECTION HYDRONIC PIPING SPECIALTIES PART 1- GENERAL
Essex County College - West Essex Campus Addition And Renovations dib # 54292 / 11-14 SECTION 232116 - HYDRONIC PIPING SPECIALTIES PART 1- GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions
More informationEVALUATING LOOP HEAT PIPE PERFORMANCE IMPROVEMENT USING CIRCUMFERENTIAL GROOVES. Nadjara dos Santos, Roger R. Riehl
Abstract EVALUATING LOOP HEAT PIPE PERFORMANCE IMPROVEMENT USING CIRCUMFERENTIAL GROOVES Nadjara dos Santos, Roger R. Riehl National Institute for Space Research INPE - Space Mechanics and Control Division-DMC
More informationFalling-film evaporators.
Falling-film evaporators. State-of-the-art falling-film evaporators for efficient steam utilisation in beet and cane sugar factories and sugar refineries. 2 BMA Passion for Progress For over 160 years,
More informationInternational Reactor Bulletin 1100 Corporation. Standard and Custom Reactors for the Chemical Process Industries
International Reactor Bulletin 1100 Corporation Standard and Custom Reactors for the Chemical Process Industries 2 International Reactor Corporation 521 Kiser Street Dayton, Ohio 45404-1641 Phone: 937-224-4444
More informationCEILING SPEAKER SYSTEM
Rev. A INSTRUCTION MANUAL CEILING SPEAKER SYSTEM F-122CU2 Please follow the instructions in this manual to obtain the optimum results from this unit. We also recommend that you keep this manual handy for
More informationAs we survey audio systems
-a five-part article in Home Theater magazine, October 1993 - February 1994 Home Theater Acoustics Volume Four Ambiance speakers are readily becoming standards in home theater BY ARTHUR NOXON As we survey
More informationINCREASING BOILER EFFICIENCY BY USING DIFFERENT MEASUREMENTS AND TYPES OF FIRETUBE PLATES AND DIFFERENT NOZZLES
INCREASING BOILER EFFICIENCY BY USING DIFFERENT MEASUREMENTS AND TYPES OF FIRETUBE PLATES AND DIFFERENT NOZZLES Bassam A. Al-Helou Mechanical Engineering Department Faculty of Engineering Technology -
More informationREFRIGERANT PIPING
SECTION 232300 - REFRIGERANT PIPING PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification
More informationWelding Job Knowledge
Heat Treatment - Part 3 When it is not possible to place the entire component in a furnace for heat treatment (because of the size of the fabrication, circumferential welds in a pipework system or when
More informationMECHANICAL SCIENCE Module 2 Heat Exchangers
Department of Energy Fundamentals Handbook MECHANICAL SCIENCE Module 2 Heat Exchangers Heat Exchangers DOE-HDBK-1018/1-93 TABLE OF CONTENTS TABLE OF CONTENTS LIST OF FIGURES... ii LIST OF TABLES... iii
More informationNon-Destructive Dust Removal
Non-Destructive Dust Removal ACOUSTIC CLEANING SYSTEMS...BLACK MAGIC, OR DO THEY REALLY WORK? Horn Body Driver Diaphragm The principle behind acoustic cleaning is very simple: sound is a vibration through
More informationAMC. Owner s Manual. Sub 12
AMC Owner s Manual Sub 12 SPECIFICATIONS Frequency Range (±2 db): Driver Complement: Dimensions: Installation Environment: Weight: 20 Hz to 80Hz One 12 Cast frame woofer in a front-vented enclosure Enclosure:
More informationIf a peak space temperature to about 28ºC is acceptable to the occupants then a naturally ventilated solution is a viable option.
Air handling units Aesthetic Not to add significantly to the existing ambient noise levels. Functional requirements If a peak space temperature to about 28ºC is acceptable to the occupants then a naturally
More informationSECTION REFRIGERATION. 1. Reciprocating Compressors (Hermetic). 2. Reciprocating Compressors (Open Drive). 3. Water Cooled Condensing Units.
SECTION 15650 REFRIGERATION PART 1 - GENERAL 1.01 SUMMARY A. Section Includes: 1. Reciprocating Compressors (Hermetic). 2. Reciprocating Compressors (Open Drive). 3. Water Cooled Condensing Units. 4. Air
More informationExperimental Assessment of the Thermal Performance of Storage Canisterm01d ing Fix ture Conj?gurations
LA-3376-MS UC-722 ssued: November 997 Experimental Assessment of the Thermal Performance of Storage Canisterm0d ing Fix ture Conj?gurations for the Los Alamos Nuclear Materials Storage Facility John D.
More informationReal-Time Root Cause Analysis for Complex Technical Systems
Real-Time Root Cause Analysis for Complex Technical Systems Jan Eric Larsson, Joseph DeBor IEEE HPRCT Monterey, CA, August 29 th 2007 Handling Alarm Cascades Root cause analysis: find the initiating events
More informationHeat transfer enhancement in an air process heater using semi-circular hollow baffles
Available online at www.sciencedirect.com Procedia Engineering 56 ( 2013 ) 357 362 5 th BSME International Conference on Thermal Engineering Heat transfer enhancement in an air process heater using semi-circular
More informationNuclear Electric Heating
Nuclear Electric Heating Caloritech has exceeded the most demanding nuclear heating requirements for over 30 years. We design and manufacture products for nuclear applications in PWR, BWR and PHWR nuclear
More informationState-of-the-art Developments to Save Energy in Coating Drying
State-of-the-art Developments to Save Energy in Coating Drying Executive Summary Coating drying is expensive. A great deal of energy is needed to effectively evaporate sufficient water to dry the coating.
More informationD-11 OUTLINE SPECIFICATION FOR HTHW (ABOVE GRADE) HYDRONIC PIPING
D-11 OUTLINE SPECIFICATION FOR HTHW (ABOVE GRADE) HYDRONIC PIPING PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions
More informationHTM Circulation Pumps acc. to DIN EN 733 Type NKX
HTM Circulation Pumps acc. to DIN EN 733 Type NKX General The new NKX pump line replaces our former heat transfer oil circulation pump type NKL s. The outer dimensions of both pump types are identical
More informationNumerical Stability Analysis of a Natural Circulation Steam Generator with a Non-uniform Heating Profile over the tube length
Numerical Stability Analysis of a Natural Circulation Steam Generator with a Non-uniform Heating Profile over the tube length HEIMO WALTER Institute for Thermodynamics and Energy Conversion Vienna University
More informationCTx Series pictured here with the S Series S-8 Powered Subwoofer. CTx Series Compact Speakers. O w n e r s M a n u a l
CTx Series pictured here with the S Series S-8 Powered Subwoofer CTx Series Compact Speakers O w n e r s M a n u a l Introduction Congratulations on your purchase of RBH CTx Series speakers! Your speakers
More informationA. Codes and Standards that are Standard at the University:
PART 1: GENERAL 1.01 Purpose: 1.02 References: 1.03 Requirements: A. This standard is intended to provide useful information to the Professional Service Provider (PSP) to establish a basis of design. The
More informationThe Role of Computational Fluid Dynamic and Aeroacoustic Simulations in Reducing the Noise of a Forward-Curved Blade Radial Fan
The Role of Computational Fluid Dynamic and Aeroacoustic Simulations in Reducing the Noise of a Forward-Curved Blade Radial Fan Manoochehr Darvish Bastian Tietjen Stefan Frank darvish@htw-berlin.de tietjen@htw-berlin.de
More informationHYDRONIC SPECIALTIES TACO AC(F)-PAX 05/15/2008
SECTION 15181 - HYDRONIC SPECIALTIES PART 1 - GENERAL 1.1 SECTION INCLUDES A. Air separators B. Expansion tanks C. Pump accessories 1.2 RELATED SECTIONS A. Section - Plumbing Piping Specialties B. Section
More informationCopyright 1984 by ASME DESIGN OF A HEAT RECOVERY STEAM GENERATOR
JI THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS 345 E. 47 St., Now York, N.Y.10017 The Society shall not be responsible for statements or opinions advanced in papers or in discussion at meetings of the
More informationElement D Services Heating, Ventilating, and Air Conditioning
PART 1 - GENERAL 1.01 OVERVIEW A. This section includes criteria for the design of building heat generating systems including all isolation valves and steam piping and fittings, steam specialties, control
More informationCase Study 1 Underground Car Park
Case Study 1 Underground Car Park Dorota Brzezińska 1, Janusz Paliszek 2, Piotr Smardz 2, Renata Ollesz 1, Karol Kaczor 2 1 Lodz University of Technology, GRID - Lodz, 2 INBEPO Wroclaw, Poland Building
More informationAutomatic History Comparison (AHC) Experience at Palo Verde
35th EPRI NDE Conference Automatic History Comparison (AHC) Experience at Palo Verde Qui Le, Fellow Engineer Westinghouse Electric Company LLC Stephen Beehner, NDE Level III Westinghouse Electric Company
More informationUnderstanding Recognized and Generally Accepted Good Engineering Practices (RAGAGEP) for the Ammonia Industry
Understanding Recognized and Generally Accepted Good Engineering Practices (RAGAGEP) for the Ammonia Industry Daniel Dettmers Industrial Refrigeration Consortium University of Wisconsin Madison Overview
More information