Seismic re-evaluation of piping systems of heavy water plant, Kota

  • 81 Pages
  • 3.82 MB
  • English

Bhabha Atomic Research Centre , Mumbai
Nuclear power plants -- Piping -- India -- Kota -- Evaluation., Heavy water reactors -- India -- Kota -- Evalua



Statementby Rajesh Mishra ... [et al.].
SeriesBARC external ;, BARC/2002/E/011
ContributionsMishra, Rajesh., Bhabha Atomic Research Centre.
LC ClassificationsMicrofiche 2004/60258 (T)
The Physical Object
Paginationii, 81 p.
ID Numbers
Open LibraryOL3709740M
LC Control Number2003306816

Seismic re-evaluation of piping systems of heavy water plant, Kota. By R Mishra, H S Kushwaha, R S Soni and V Venkat-Raj.

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Abstract. Heavy Water Plant, Kota is the first indigenous heavy water plant built in India. The plant started operation in the year and it is approaching the completion of its originally stipulated design life. Seismic design for water pipelines is not explicitly included in current AWWA standards.

Compounding this problem, standard water pipeline materials and installation techniques are prone to high damage rates whenever there is significant permanent ground deformations or excessively high levels of. The characterization of pipe systems for the purposes of seismic design typically involves two classifications, segmented pipe and continuous pipe systems.

These two classifications are defined as IROORZV 25RXUNHDQG/XL Segmented Pipe. A pipeli ne with lower axial and rotational stiffness at the joints than the rest of the pipeline. During a seismic or earthquake event, the piping system and components can lead to catastrophic failure if proper seismic analysis of piping systems is not performed during the design stage.

Description Seismic re-evaluation of piping systems of heavy water plant, Kota FB2

So, earthquake analysis of piping systems must be performed while piping stress-analysis if the plant falls under seismic zones as specified by codes.

During seismic re-evaluation of a process of Equipment of Heavy Water Plant-Kota for Earthquake and Wind Loads supports are very effective in reducing the seismic response of piping.

It also covers anchorage design of component and piping system, and provides an introduction to retrofitting, seismic response control including seismic base isolation, and testing of SSCs.

The book is written in an easy-to-understand way, with review questions, case. short pipe connection at the base of the tank, and loss of contents. It is therefore important to verify the seismic adequacy of equipment anchorage and tie-downs as part of the seismic design or retrofit of piping systems.

Mechanical Joints By “mechanical joints” we refer to pipe joints other than welded and flanged joints. This. PDF | The integrity of piping systems in nuclear power plants under earthquake excitation is very essential.

In nuclear power plants, snubbers have | Find, read and cite all the research you. Acknowledgements The following people and their affiliations contributed to this report. Person Affiliation John Eidinger (Chairman) G&E Engineering Systems Inc. plants, seismic assessment of Pickering A was initiated in A seismic hazard assessment for the Pickering site using current methodology was completed in A uniform hazard response spectrum with g peak ground acceleration formed the basis for seismic capacity/demand evaluations of safety-related systems, structures and components.

All piping systems must be seismically restrained, unless: the pipes have a diameter less than 50 mm, or the pipework is suspended by individual hangers less than mm long from the top of the pipe to the supporting structure.

Piping systems that do not require restraint. EVOLUTION OF SEISMIC DESIGN OF STRUCTURES, SYSTEMS AND COMPONENTS OF NUCLEAR POWER PLANTS K.V. Subramanian Tata Consulting Engineers Limited Mumbai ABSTRACT Safety of the personnel of a nuclear power plant (NPP) and the environment around the plant should be ensured against all natural hazards including earthquakes.

life in the event of failure – Water treatment plants Modern and Emerging Pipe Systems • Ductile Iron C –Field lock gasket - restrained joint –Joint harness - restrained joint Seismic HDPE Ruggedness 1 2 2 3 3 3 3 3 3 3 Bending 1 2 2 3 3 3 3 3 3 3 Joint Flexibility 1 2 2 2 2 3 3 3 3 3. Loads on the Pipe Using Equivalent Static and Dynamic Load Analyses.

The seismic load on piping using the other 4 design procedures is typically based on an in-structure response spectrum as shown in Figure 2, which for the sample analysis contained in this paper is characteristic of a response spectra applicable to piping system located on.

The seismic qualification of piping systems for operability must demonstrate the seismic adequacy of the piping itself, the pipe supports and their attachment to the building structure, and the equipment and components within the scope of seismic qualification. 24 Seismic Design and Qualification.

Control of seismic response of piping systems and components in power plants by base isolation James M. Kelly Department of Civil Engineering, University of California, Berkeley, California 94USA Daniel E. Chitty Applied Nucleonics Engineers 1nc, Santa Monica, California, USA (Received August 19 70) Standard approaches to the aseismic design of piping systems and com- ponents for.

piping system will perform its intended function: position retention (the pipe would not fall), leak tightness (the pipe would not leak), or operability (the piping system would deliver and regulate flow).

This Guide applies to above ground piping systems, which - except for seismic design – otherwise comply with the provisions of the ASME. The subject of seismic design of fire suppression systems has been incorporated in NFPA Standard Standard for the Installation of Sprinkler Systems since The design guidance contained in NFPA 13 for seismic bracing of sprinkler piping has also been adopted by NFPA Standard for the Installation of Standpipe and Hose; NFPA Standard for the Installation of Water.

By Mir Sajjad Ali, Bechtel Code requires that nuclear plant piping must be designed to withstand seismic effects due to potential earthquake. During a potential loss of coolant accident.

Seismic design of piping system refines the seismic analysis techniques. Improved Procedures for New Piping Structures: The seismic monitoring provides the records required to calibrate the piping engineering process for new piping system structures. Piping and support system vibration test (1) Test model The model is a piping and support system with a piping bore of full-scale A, Sch40, which has elbows, a tee.

Table 1 shows specification of test model. Figure 4 shows the piping and support system model. (2) Seismic wave. Namita Y, Ono S, Suzuki K, SasakiY, Abe H, Kuroda K () Proving test on the seismic reliability of the main steam piping system: part 3—analytical evaluation of BWR feed water piping supported by energy absorbing support.

In: Seismic engineering conference proceedings, ASME PVP, volpp – Google Scholar. In recent U.S. earthquakes, most damage has occurred because of failures in a building’s nonstructural components.

Pressure piping systems in industrial processing facilities are particularly vulnerable to seismic damage. If systems are not properly detailed or maintained, business owners can incur significant losses due to property damage or production shutdowns.

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If distribution systems (piping, raceways, duct, etc.) or individual components were evaluated for earthquake loads, they were limited to applying the seismic acceleration to the mass distribution of the distribution system or component. The building code seismic design requirements summarized in Appendix A were meant to.

Reddy, K. Suzuki, T. Watanabe and S. Mahajan, Linearization techniques for seismic analysis of piping system on friction support, J. PressureVessel Technology, ASME () – [5] S.V. Bakre, R.S. Jangid and G.R. Reddy, Response of piping system on friction support to bi-directional excitation, Nuclear Engineering and Design.

This paper discusses the global stress analysis required for the seismic/structural requalification of a reactor secondary piping system in which minor defects (flaws) were discovered during a detailed inspection.

The flaws in question consisted of weld imperfections. Specifically, it was necessary. Identify the requirements for the seismic design or retrofit of critical plant and facility systems and equipment to comply with the latest national codes Explain how to evaluate plant piping and equipment to ensure those requirements are met, and practical methods to.

– Distribution systems in Seismic Design Categories D, E, or F included in the exceptions for conduit, cable tray, and raceways in Sectionduct systems in and piping and tubing systems in Where in-line components, such as valves, in-line suspended pumps, and.

The need of enhanced seismic analysis and design rules for petrochemical piping systems is widely recognized, where the allowable stress design method is still the customary practice. This paper presents an up-to-date performance-based seismic analysis (PBSA) of piping systems.

values used in seismic analyses. The work documented herein provides an overview and evaluation of industry advancements, and how they can best be incorporated into the seismic analyses used in the design of nuclear power plants.

This report also provides commentary on damping values for seismic. Managing the Cost of Plant Piping System Leakage. John M. Jenco, Donna R. Keck, Seismic Re-Evaluation of the Armenian NPP Unit 2: Issues and Engineering Approach. Paruyr Zadoyan, Analysis of Piping Systems for Life Extension of Heavy Water Plants in India.

Rajesh K. Mishra, R. S. Soni. Seismic loads on piping system due to an earthquake can cause excessive vibrations, which can lead to serious instability resulting in damage or complete failure.

In this paper, passive and semi-active supplemental devices have been studied to mitigate seismic response and vibration control of piping system used in the process industries.• Using flexible couplings on piping systems will to reduce potential for pipe leaks containment systems and designing site grading and separate storm water control systems to capture flows to prevent mixing and off-site discharge.

design of the proposed Brightwater Treatment Plant facilities. APPROACH TO SEISMIC DES CLEAN.