It is a technolgy by which we can produce cooling Effect Using MAgnets and Magnetic Materials......
For any other enquiry u can contact me on +919540278218....
and can join my Page www.facebook.com/engineeringindia
A ppt on natural disaster and safty risks at nuclear power plantMadhusudan Sharma
As resent time has a big debate that we will use use nuclear power plant for energy generation or not .... so this presentation gives the all impacts of nuclear plants on nature.
It is a technolgy by which we can produce cooling Effect Using MAgnets and Magnetic Materials......
For any other enquiry u can contact me on +919540278218....
and can join my Page www.facebook.com/engineeringindia
A ppt on natural disaster and safty risks at nuclear power plantMadhusudan Sharma
As resent time has a big debate that we will use use nuclear power plant for energy generation or not .... so this presentation gives the all impacts of nuclear plants on nature.
UNIT-V:Non Conventional Energy Sources:
Power Crisis, future energy demand, role of Private sectors in energy management,
concepts & principals of MHD generation, Solar power plant,
Wind Energy,Geothermal Energy,Tidal energy,Ocean Thermal Energy.
I have uploaded the report related to this slides. Piezo electricity is not a new concept but it has various applications in household and instrumentation engineering. U will get a overall knowledge about applications of piezoelectricity from this slides. So Don't forget to give feedback
Its an simple slide through which one could know about energy harvesting through piezo electricity and their future scope.It details about the profit of laying piezo roads through an example.
Spintronics is a NANO technology which deals with spin dependent properties of an electron instead of charge dependent properties.
One of the main advantage of spintronics over electronics is the magnets tend to stay magnetize which is sparking in the industry an interest for replacing computer’s semiconductor based components with magnetic ones, starting with the RAM.
With an all-magnetic RAM, it is now possible to have a computer that retains all the information put into it. Most importantly, there will be no ‘boot-up’ waiting period when power is turned on.
Another promising feature of spintronics is that it doesn’t require the use of unique and specialized semiconductor, there by allowing it to work with common metals like Cu, Al, Ag.
Spintronics will use less power than conventional electronics, because the energy needed to change spin is a minute fraction of what is needed to push charge around.
Conventional electronic devices ignore the spin property and rely strictly on the transport of the electrical charge of electrons.
Adding the spin degree of freedom provides new effects, new capabilities and new functionalities.
UNIT-I:Introduction:
Electric energy demand and growth in India, electric energy sources.
Thermal Power Plant: Site selection, general layout and operation of plant, detailed description and use of different parts.
Hydro Electric Plants: Classifications, location and site selection, detailed description of various components, general layout and operation of Plants, brief description of impulse, reaction, Kaplan and Francis turbines, advantages & disadvantages, hydro-potential in India.
Integrating the Marketing and Engineering Points of View in Marketing Communi...PlantEngineering
-Eliminating bias and jargon from marketing communications
-Understanding how engineers create and understand communications
-Communicating with the B2B buyer
UNIT-V:Non Conventional Energy Sources:
Power Crisis, future energy demand, role of Private sectors in energy management,
concepts & principals of MHD generation, Solar power plant,
Wind Energy,Geothermal Energy,Tidal energy,Ocean Thermal Energy.
I have uploaded the report related to this slides. Piezo electricity is not a new concept but it has various applications in household and instrumentation engineering. U will get a overall knowledge about applications of piezoelectricity from this slides. So Don't forget to give feedback
Its an simple slide through which one could know about energy harvesting through piezo electricity and their future scope.It details about the profit of laying piezo roads through an example.
Spintronics is a NANO technology which deals with spin dependent properties of an electron instead of charge dependent properties.
One of the main advantage of spintronics over electronics is the magnets tend to stay magnetize which is sparking in the industry an interest for replacing computer’s semiconductor based components with magnetic ones, starting with the RAM.
With an all-magnetic RAM, it is now possible to have a computer that retains all the information put into it. Most importantly, there will be no ‘boot-up’ waiting period when power is turned on.
Another promising feature of spintronics is that it doesn’t require the use of unique and specialized semiconductor, there by allowing it to work with common metals like Cu, Al, Ag.
Spintronics will use less power than conventional electronics, because the energy needed to change spin is a minute fraction of what is needed to push charge around.
Conventional electronic devices ignore the spin property and rely strictly on the transport of the electrical charge of electrons.
Adding the spin degree of freedom provides new effects, new capabilities and new functionalities.
UNIT-I:Introduction:
Electric energy demand and growth in India, electric energy sources.
Thermal Power Plant: Site selection, general layout and operation of plant, detailed description and use of different parts.
Hydro Electric Plants: Classifications, location and site selection, detailed description of various components, general layout and operation of Plants, brief description of impulse, reaction, Kaplan and Francis turbines, advantages & disadvantages, hydro-potential in India.
Integrating the Marketing and Engineering Points of View in Marketing Communi...PlantEngineering
-Eliminating bias and jargon from marketing communications
-Understanding how engineers create and understand communications
-Communicating with the B2B buyer
"Opinion: The arts in Virginia shouldn’t have to beg for promised support" by Carlton Hardy. Published in the Jan/Feb 08 issue of Bravo! and reprinted in the Virginia Gazette in Spring 2008.
The proper use of personal protective equipment (PPE) is a critical component of any electrical safety program, and yet proper PPE use often is overlooked, diminished, or simply disregarded by electrical workers in manufacturing. Plant Engineering will present a Webcast on December 5th at 1 p.m. CT that will discuss the importance of PPE to mitigate arc flash dangers and other electrical safety issues.
This project presents a new strategy for load shedding with the aim of providing the consumers with the benefit of using high priority loads of their choice, even when load shedding is done.
A simple low cost bidirectional Power Line Communication (PLC) system is utilized to control and monitor the loads of consumer.
Make India Safer with JMV LPS Ltd Electrical Equipment & Human SafetyMahesh Chandra Manav
Human Life is not free and We all want to Live Peace full Safe Life Use of Power to Utilization of All Gadgets which for our comfort , We also Have Threat for Lightning and World wide their is Standard and Practice for our Assets and Human Safety.
in India we have very strong Documents for Electrical Installation and Fire Safety by NBC2016, NEC 2011, IS 782, RDSO , CEA (IPDS&DDUGJY) , NFC17-102.
Now Fire and Safety is released Document for Awareness to Common Public SACHET installation of Electrical Equipment (Earthing and lightning Protection).
Make in India Govt Advisory to give Preference Manufacturer of India and Complies Strongly India Standard by BIS, CEA,SECI, RDSO and MBBL2019.
We request all the Authorities to use Latest Specification in their Present Project on Floor and upcoming Project .
our Electrical Inspection and Fire Safety Officer to follow National building Code Strictly.
SMART CITY, CCTV and Security Surveillance, Project AMRUT (WTP), Solar PV, Electrical Vehicle Charging Infra, Metro Rail , Indian Railway, Sea Ports and Air Ports, Power , Transmission & Distribution, Building Infra Housing, Commercial , Hospital,University, Defense ,Telecom and all other Industries.
We all has to work India Safer , Green and Clean
Pay Money for Electrical Safety
Five to 10 arc flash explosions occur in electric equipment every day in the United States. This number does not include cases in which the victim is sent to an ordinary hospital. Instead, these incidents are so severe the victims require treatment from a special burn center.
Performance study of photovoltaic solar celleSAT Journals
Abstract
Energy is the driving force for any kind of economic and scientific development, automation, and innovation. Due to high
excursion rate of conventional energy sources, availability of conventional fuels is reducing day by day. Consequently their prices
are increasing very rapidly. Along with these they pollute atmosphere due to combustion and chemical process associated with
them. Considering all these it is needed to find nonconventional sources to meet up energy requirements. Worldwide ‘Solar
Energy’ is one of the most effective and popular nonconventional energy sources. Solar energy does not produce any pollutants
and is one of the cleanest energy sources. This can be used to produce electricity from sunlight, named solar power. Solar power
can be directly generated from PV cell or indirectly from concentrated solar power (CSP).
This paper focuses on the performance of photovoltaic (PV) solar cell for solar power. Therefore simulation is done to observe
efficiency for different changing conditions and parameters of solar cell electrical model and observe better efficiency for InGaAs
alloy.
Key Words: Solar power; Solar cell; PV; PV operation; Electricity generation; Electrical model; Solar cell materials;
Efficiency; Different parameters; Silicon; Indium Gallium Arsenide alloy.
Fault analysis in power system using power systems computer aided designIJAAS Team
This work presents a fault analysis simulation model of an IEEE 30 bus system in a distribution network. This work annalysed the effect of fault current and fault voltage in a distribution system. A circuit breaker was introduced into the system to neutralize the effect of the fault. The system was run on a PSCAD software and results were obtained. The system was monitored based on the start time and the end time of the fault and how well the circuit breaker reacts with those times. Fault occurred from 0.100 to 0.300 seconds before it was removed. At the time fault was not applied (i.e. from 0.00 to 0.100 and from 0.300 to 0.72), the circuit breaker was close and became open when fault was applied so as to cut off current flow through the line.The result obtained gave the disruption caused by the fault and the quick response of the circuit breaker in neutralizing it. Results gotten are based on when the circuit breaker is close and no fault is applied and when the circuit breaker is open due to fault. From this work, it was obtained that circuit breakers are very essential in system protection and reliability.
by Lasantha De Alwis
Head of Corporate Services of the Commonwealth Telecommunications Organisation (the Commonwealth agency mandated in the field of ICTs)
mail: l.dealwis@cto.int
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
Encryption in Microsoft 365 - ExpertsLive Netherlands 2024Albert Hoitingh
In this session I delve into the encryption technology used in Microsoft 365 and Microsoft Purview. Including the concepts of Customer Key and Double Key Encryption.
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf91mobiles
91mobiles recently conducted a Smart TV Buyer Insights Survey in which we asked over 3,000 respondents about the TV they own, aspects they look at on a new TV, and their TV buying preferences.
Dev Dives: Train smarter, not harder – active learning and UiPath LLMs for do...UiPathCommunity
💥 Speed, accuracy, and scaling – discover the superpowers of GenAI in action with UiPath Document Understanding and Communications Mining™:
See how to accelerate model training and optimize model performance with active learning
Learn about the latest enhancements to out-of-the-box document processing – with little to no training required
Get an exclusive demo of the new family of UiPath LLMs – GenAI models specialized for processing different types of documents and messages
This is a hands-on session specifically designed for automation developers and AI enthusiasts seeking to enhance their knowledge in leveraging the latest intelligent document processing capabilities offered by UiPath.
Speakers:
👨🏫 Andras Palfi, Senior Product Manager, UiPath
👩🏫 Lenka Dulovicova, Product Program Manager, UiPath
Elevating Tactical DDD Patterns Through Object CalisthenicsDorra BARTAGUIZ
After immersing yourself in the blue book and its red counterpart, attending DDD-focused conferences, and applying tactical patterns, you're left with a crucial question: How do I ensure my design is effective? Tactical patterns within Domain-Driven Design (DDD) serve as guiding principles for creating clear and manageable domain models. However, achieving success with these patterns requires additional guidance. Interestingly, we've observed that a set of constraints initially designed for training purposes remarkably aligns with effective pattern implementation, offering a more ‘mechanical’ approach. Let's explore together how Object Calisthenics can elevate the design of your tactical DDD patterns, offering concrete help for those venturing into DDD for the first time!
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Emergency Electrical Power Supply to Nuclear Safety Systems: design basis and lesson learned from the Fukushima accident
1. Emergency electrical power supply to nuclear safety
systems: Design basis and lesson learned from the
Fukushima accident
Corrado Alessandroni
Licensing and Safety Technical Advisor
Ansaldo Nucleare
Genova , 30 Ottobre 2013
2. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: What’s occurred at Fukushima
FUKUSHIMA DAI-ICHI March 11th, 2011
What’s occurred to the Electrical Power Supply Systems
3. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: What’s occurred at Fukushima
FUKUSHIMA DAI-ICHI March 11th, 2011
Hour 14.46: massive earthquake (magnitude 9.0) which induced onsite seismic
accelerations above design values
Loss of normal electrical power supply caused by the earthquake
Reactor SCRAM in the three units in operation (of six located onsite)
Electrical power supplied by the emergency diesel generators (EDGs) that started as designed
Hour 15.30: an earthquake induced Tsunami struck the site: waves up to 14 ÷ 15 m
height flooded the major buildings (tsunami barriers where designed for 6 m wave height
protection).
Loss of 12 out of 13 EDGs located onsite – the survived EDG was servicing the Units 6
Massive damage of electrical panel boards
4. CP EXPO 2013
Genova , 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: What’s occurred at Fukushima
Path of inundation
Ref. A One-year Review of Fukushima Daiichi Nuclear Power Station “Steps to Achieve Stabilization” March 2012
5. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: What’s occurred at Fukushima
FUKUSHIMA
DAI-ICHI
Ref. Special Report on the Nuclear Accident at the Fukushima Daiichi Nuclear Power Station – INPO 11-005 November 2011
6. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: What’s occurred at Fukushima
Ref. A One-year Review of Fukushima Daiichi Nuclear Power Station “Steps to Achieve Stabilization” March 2012
7. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: What’s occurred at Fukushima
Fukushima Daiichi Electrical Distribution Damage
Ref. Special Report on the Nuclear Accident at the Fukushima Daiichi Nuclear Power Station – INPO 11-005 November 2011
8. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: What’s occurred at Fukushima
Ref. Fukushima Nuclear Accident Analysis Report (Interim Report) – Tokyo Electric Power Company, Inc. December, 02nd 2012
9. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: What’s occurred at Fukushima
Ref. A One-year Review of Fukushima Daiichi Nuclear Power Station “Steps to Achieve Stabilization” March 2012
10. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: What’s occurred at Fukushima
Post-accident recovery actions to restore the electrical power supply
No written emergency procedures to face the severe accident situation
Restoration of external power supply impossible due to the massive damage
induced on transmission lines by the earthquake
Vehicles batteries
instrumentation
secured on-site were collected to power monitoring
about 6 hours after the initiating event, batteries were connected to power
reactor water level indicator at Unit 1
Acquisition of power supply cars and further batteries from outside
power supply cars started to arrive onsite on 11th March evening-night;
about 50 mobile electric-generators were onsite on 12th March morning;
connection difficulties due to the massive damaged of the electrical panels;
first connection was made in the afternoon of 12th March (15.30) about 25 hours
after the earthquake and about 18 hours from the arrival of the first power supply
car;
it was decided to use fire engines and motor driven pumps to cool reactors trough
injection of sea water due to the impossibility to restore power to plant safety
systems.
11. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: What’s occurred at Fukushima
Ref. Fukushima Nuclear Accident Analysis Report – Tokyo Electric Power Company,
Inc. June, 20th 2012
12. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: EPS Design Bases
EMERCENCY POWER
SYSTEM (EPS)
Design Bases
13. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: EPS Design Bases
System definition
EPS includes:
1. Electric power supply sources: Electric Generators (typically DieselGenerator) and Batteries
2. Electric power distribution system
Functions
Provide power supply to plant components assuring safety functions under all
design basis conditions where the normal power supply is not available.
The fundamental safety functions are:
1.
2.
3.
Shutdown of the nuclear chain reaction
Nuclear fuel cooling and decay heat removal
Containment of radioactive releases
14. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: EPS Design Bases
System Design Bases
Separation from the normal power supply system of the plant: Defense-in-Depth
Principle
Component redundancy : Application of the Single Failure Criterion
Redundant components separation : protection against from common
cause failure (fire, flooding, internal missiles etc.)
Environmental qualification: P,T, humidity and radiation associated also to
accidental conditions
Protection / Qualification against design basis External Natural Phenomena
(Earthquake, Flooding, Tornado etc.) and Man-made External Events (Aircraft
Impact, Explosion etc...)
Component safety classification commensurate with the importance of the
safety functions to be performed
Application of Codes and Standard for the design, fabrication, erection, testing and
operation commensurate with the importance of the safety functions to be performed
Reliability requirements for emergency diesel generators (0,95-0,975 per demand
for each EDG - US NRC Reg.Guide 1.155 «Station Blackout»)
Quality assurance
Inspection and Testing Program during operation – Program surveilled by the
Safety Authority (Individual Plant Technical Specification)
15. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: EPS Design Bases
REGULATIONS and STANDARDS
International (IAEA, IEC, ISO)
IAEA Safety Standard Series NS-G-1.8 Design of Emergency Power Systems
for Nuclear Power Plants
National (Regulatory Guides,IEEE, RCC-E, KTA, …)
Generation III Light Water Reactors: Utilities
Requirements
EUR Requirements Document (Europe)
EPRI Utility Requirements Document (USA and other countries)
16. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: EPS Design Bases
U.S. STANDARDS - IEEE Standards for Safety Systems and Components (IEEE Class 1E Items)
Power, Instrumentation and Control Portion of Safety Systems
IEEE Std 603 Criteria for Safety Systems for NPGSs
-------------US NRC Reg. Guide 1.153
Power Systems
Protection System
IEEE Std 308
US NRC Reg.Guide 1.32
IEEE Std 279
US 10CFR50 and SRP Ch.7
•
•
•
•
•
Post-Accident Monitoring
System
IEEE Std 497
US NRC Reg.Guide 1.97
System Design Basis
System Design Criteria
Sense and Command Features
Requirements
Execute Features Requirements
Power Sources Requirements
Digital Computer Systems
ANSI/ANS IEEE Std 7-4.3.2
Single Failure Criterion
Periodic Testing
IEEE Std 379
US NRC Reg.Guide 1.53
IEEE Std 338
US NRC Reg. Guide 1.118
Independence and Separation
Environmental and Seismic Qualification
IEEE Std 384
US NRC Reg.Guide 1.75
IEEE Std 323 – IEEE Std 344 – IEEE Std 627
US NRC Reg Guide 1.89 and 1.100
17. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: EPS Design Bases
U.S. STANDARDS -IEEE Standards for Safety Systems and Components (IEEE Class 1E Items)
Examples of Specific Standards for equipment-apparatus
•
•
•
•
•
System Design Basis
System Design Criteria
Sense and Command Features
Requirements
Execute Features Requirements
Power Sources Requirements
IEEE Std. 387 – Criteria for Diesel-Generator Units Applied as Standby Power Supplies for
Nuclear Power Generating Stations (US NRC Reg. Guide 1.9);
IEEE Std. 485 - Recommended Practice for Sizing of Lead-Acid Batteries for Stationary
Applications (US NRC Reg. Guide 1.212);
IEEE Std. 572 - Qualification of Class 1E Connection Assemblies for Nuclear Power
Generating Stations (US NRC Reg. Guide 1.156);
……
18. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: After Fukushima
AFTER FUKUSHIMA
19. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: After Fukushima
INTERNATIONAL INITIATIVES
Stress Tests: European Union
EU Council of 24/25 March, 2011, requested that the safety of all EU nuclear plants should be
reviewed
31st May 2011: ENSREG issued EU Stress Tests Specifications
June 2011: all the operators of nuclear power plants in the EU started safety reassessments on
the basis of ENSREG Specifications
November 2011: NPP Operators Final Reports to National Safety Authorities
December 2011: National Reports by Safety Authorities
April 2012: Peer Review Report by the Task Force setup by ENSREG and EU Council with
experts from all EU countries.
August 2012: ENSREG Action Plan to follow-up the implementation of the peer review
recommendations
Post-Fukushima Task Force and Action Plan: USA
July 2011 Document with Near-Term Task Force (NTTF) recommendations (SECY-11-0093): NTTF
conducted a review of the NRC regulations and processes in light of the events at Fukushima
determining additional improvements to be made
September 2011 Selected recommendations to be taken without delay (US NRC SECY-11-0124)
October 2011 NTTF Recommendations Prioritization and Action List (US NRC SECY-11-0137)
March 2012 Approval of the first three orders to Plant Operators (SECY-12-0025)
20. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: After Fukushima
ACTIONS
Reassessment of the Design Basis External Events with updated
methodologies and data
Definition of Beyond Design-Basis External Events Mitigation
Strategies.
Scenario: loss of electrical power and ultimate heat sink affecting all
units at a site simultaneously
Goal: prevent fuel damage in the reactor and spent fuel pool with
simultaneous actions on all units at site
21. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: After Fukushima
Mitigation Strategies– Phased Approach
(rif. NEI 12-06 Maggio 2012 – Diverse Flexible Coping Strategies –FLEX- Implementation Guide)
Phase 1- Initial Phase:
use of installed equipment and resources to maintain or restore
nuclear safety functions
most of the existing NPPs are already equipped to manage a total loss
of AC power (external grids + diesel generators) for few hours (typically
4-6 hours) - Station-Blackout scenario
disconnect not-vital electrical loads to extend power sources duration
Phase 2-Transition Phase: provide sufficient, portable, onsite equipment and consumables to
maintain or restore the nuclear safety functions until they can be
accomplished with resources brought off site (for roughly 24 hours)
Phase 3 - Final phase :
obtain sufficient offsite resources to sustain those functions
indefinitely
22. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: After Fukushima
Elements of the Mitigation Strategy
Portable equipment that provides means of obtaining power and water to maintain or
restore key safety functions for all reactors at a site
This could include equipment such as portable pumps, generators, batteries and battery chargers, compressors, hoses, etc.
Reasonable staging and protection of portable equipment and associated
transportation routes
The equipment used for mitigation would be staged and reasonably protected from applicable site-specific severe
external events to provide reasonable assurance that N sets of equipment will remain deployable following such an
event (N is the number of NPP Units on site).
Portable equipment connections qualified-protected to timely supply power to vital loads
and provide water to cool down the nuclear fuel in reactors and spent fuel pools
Procedures and guidance to implement mitigations strategies to be integrated in the Plant
Operating Procedures (AOP)
Personnel Training
Programmatic controls that assure the continued viability and reliability of the mitigation
strategies.
These controls would establish standards for quality, maintenance, testing of FLEX equipment, configuration management
and periodic training of personnel..
23. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: After Fukushima
24. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: After Fukushima
Post-Fukushima – ANN Service Products
ELECTRICAL FLEXIBLE CONNECTIONS
for off-site mobile equipment
“Plug and Socket” to the Electrical
Distribution System, at different
voltage levels (medium up to 11
kV, low up to 400 V)
FULLY QUALIFIED/PROTECTED 6KV SWITCHBOARDS
Possible cross-links for safety electrical power loads
6 kV from any operable emergency diesel generator
•
•
•
•
identification of emergency electrical loads;
installation of circuit breakers allowing for fast load transfer, isolation
of not emergency loads and connection of emergency power source;
update of the existing distribution network, to respect all the
duplication and segregation requirements ;
electrical cabinet design and qualification process;
DIVERSE AND PROTECTED STAND-BY DIESEL GENERATOR STATIONS
Diverse and protected (external events) diesel generator stations to be
installed at NPP site
25. CP EXPO 2013
Genova, 30 Ottobre 2013
Emergency electrical power supply to nuclear safety systems: Design Basis and lessonlearned from Fukushima accident: After Fukushima
Thanks for your
attention