This document provides guidance on applying electrical safety requirements in the classroom. It discusses three categories of electrical hazards: electric shock, arc flash, and arc blast. It also covers safety requirements and regulations from NFPA 70E, NEC, NESC, EM 385-1-1, and OSHA. Students will be evaluated on electrical systems safety through an examination and must score at least 70% to pass.
Work Hazards: The Potential Safety Risks of Weldingclassichirenetau
All welders must pay close attention to their safety whenever there is a project in progress. Although arc welding is generally safe, it can become a risky occupation if the welder does not observe proper safety precautions. Welding operators have to address a range of safety hazards associated with the craft. These hazards include:
Work Hazards: The Potential Safety Risks of Weldingclassichirenetau
All welders must pay close attention to their safety whenever there is a project in progress. Although arc welding is generally safe, it can become a risky occupation if the welder does not observe proper safety precautions. Welding operators have to address a range of safety hazards associated with the craft. These hazards include:
Electrical Measurement Safety and Best Practices Webinar Presented by FlukeTranscat
Live one-hour, solutions-based webinar that will benefit anyone who works with live electrical equipment, whether you’re installing, testing, maintaining, monitoring, or troubleshooting. We will cover dangers, safe work practices (including PPE, test tool standards, and ratings), best practices, and good tips for keeping safety top of mind.
Authority, A. E. (2017, November 2). YouTube. Retrieved from https ://www.youtube.com/watch?v=WseklKhGGAM&feature=youtu.be
Edvard. (2020, August 10). Electrical Engineering Portal. Retrieved from https ://electrical-engineering-portal.com/protection-three-phase-motors-from-unbalance-phase-loss-rotation
Electrical, P. (2019, August 3). YouTube. Retrieved from https ://www.youtube.com/watch?v=toUXbbPy7IU&feature=youtu.be
Electricveda. (2020). Electricveda.com. Retrieved from http s://www.electricveda.com/building-services/method-of-clean-earthing-or-grounding-in-electrical-system
Engineering, L. (2017, January 31). YouTube. Retrieved from http s://www.youtube.com/watch?v=km8MSWm39Z0&feature=youtu.be
Generator, I. (2015, October 12). YouTube. Retrieved from http s://www.youtube.com/watch?v=kyGWAVqnBFY&feature=youtu.be
Goyal, S. (2013, May 30). YouTube. Retrieved from http s://www.youtube.com/watch?v=2Pb3y69LUYw&feature=youtu.be
Hall, D. T. (2019). Practical Marine Electrical Knowledge. SSS Marine Society.
Insights, M. (2020). Ship's Electro-Technology part 1. Marine Insights.
Keljik, J. (2008). Electricity 2; Devices, Circuits, and Materials 8th Edition. New York: Delmar Cengage Learning.
Keljik, J. (2008). Electricity 4; AC/DC Motors, Control, and Maintenance 8th Edition. New York: Delmar Cengage Learning.
Keljik, J. (2013). Electricity 3: Power generation and Delivery 10th Edition. New York: Delmar Cengage Learning.
Kitcher, C. (2015, December 14). YouTube. Retrieved from http s://www.youtube.com/watch?v=FUjZwMMoltQ&feature=youtu.be
LabVolt. (2004). AC/DC MOTORS AND GENERATORS. Quebec: LabVolt Services.
LabVolt. (2004). Electric Power / Control; AC/DC Motor and Generator. Quebec: LabVolt Services.
LabVolt. (2004). ELECTRIC POWER / CONTROLS; COMPUTER-BASED INSTRUMENTS FOR EMS. Quebec: LabVolt Services.
Lessons, E. (2010, May 23). YouTube. Retrieved from https ://www.youtube.com/watch?v=ZL8zrkahuL0&feature=youtu.be
MyMisterSparky. (2010, January 21). YouTube. Retrieved from https ://www.youtube.com/watch?v=Vkd43t2y2to&feature=youtu.be
Wik, R. (2016, May 9). YouTube. Retrieved from http s://www.youtube.com/watch?v=jGdCqSxtTfo&feature=youtu.be
Woodworth, J. (2016, August 8). YouTube. Retrieved from http s://www.youtube.com/watch?v=yFCWzQxT3nE&feature=youtu.be
Yaskawa. (2017, August 21). YouTube. Retrieved from http s://www.youtube.com/watch?v=3-cs4eEiBWo&feature=youtu.be
Yaskawa. (2019, May 14). YouTube. Retrieved from http s://www.youtube.com/watch?v=qpKybaLURy0&feature=youtu.be
Yaskawa. (2019, May 20). YouTube. Retrieved from http s://www.youtube.com/watch?v=_ZztDN5XX5o&feature=youtu.be
Authority, A. E. (2017, November 2). YouTube. Retrieved from https ://www.youtube.com/watch?v=WseklKhGGAM&feature=youtu.be
Edvard. (2020, August 10). Electrical Engineering Portal. Retrieved from https ://electrical-engineering-portal.com/protection-three-phase-motors-from-unbalance-phase-loss-rotation
Electrical, P. (2019, August 3). YouTube. Retrieved from https ://www.youtube.com/watch?v=toUXbbPy7IU&feature=youtu.be
Electricveda. (2020). Electricveda.com. Retrieved from http s://www.electricveda.com/building-services/method-of-clean-earthing-or-grounding-in-electrical-system
Engineering, L. (2017, January 31). YouTube. Retrieved from http s://www.youtube.com/watch?v=km8MSWm39Z0&feature=youtu.be
Generator, I. (2015, October 12). YouTube. Retrieved from http s://www.youtube.com/watch?v=kyGWAVqnBFY&feature=youtu.be
Goyal, S. (2013, May 30). YouTube. Retrieved from http s://www.youtube.com/watch?v=2Pb3y69LUYw&feature=youtu.be
Hall, D. T. (2019). Practical Marine Electrical Knowledge. SSS Marine Society.
Insights, M. (2020). Ship's Electro-Technology part 1. Marine Insights.
Keljik, J. (2008). Electricity 2; Devices, Circuits, and Materials 8th Edition. New York: Delmar Cengage Learning.
Keljik, J. (2008). Electricity 4; AC/DC Motors, Control, and Maintenance 8th Edition. New York: Delmar Cengage Learning.
Keljik, J. (2013). Electricity 3: Power generation and Delivery 10th Edition. New York: Delmar Cengage Learning.
Kitcher, C. (2015, December 14). YouTube. Retrieved from http s://www.youtube.com/watch?v=FUjZwMMoltQ&feature=youtu.be
LabVolt. (2004). AC/DC MOTORS AND GENERATORS. Quebec: LabVolt Services.
LabVolt. (2004). Electric Power / Control; AC/DC Motor and Generator. Quebec: LabVolt Services.
LabVolt. (2004). ELECTRIC POWER / CONTROLS; COMPUTER-BASED INSTRUMENTS FOR EMS. Quebec: LabVolt Services.
Lessons, E. (2010, May 23). YouTube. Retrieved from https ://www.youtube.com/watch?v=ZL8zrkahuL0&feature=youtu.be
MyMisterSparky. (2010, January 21). YouTube. Retrieved from https ://www.youtube.com/watch?v=Vkd43t2y2to&feature=youtu.be
Wik, R. (2016, May 9). YouTube. Retrieved from http s://www.youtube.com/watch?v=jGdCqSxtTfo&feature=youtu.be
Woodworth, J. (2016, August 8). YouTube. Retrieved from http s://www.youtube.com/watch?v=yFCWzQxT3nE&feature=youtu.be
Yaskawa. (2017, August 21). YouTube. Retrieved from http s://www.youtube.com/watch?v=3-cs4eEiBWo&feature=youtu.be
Yaskawa. (2019, May 14). YouTube. Retrieved from http s://www.youtube.com/watch?v=qpKybaLURy0&feature=youtu.be
Yaskawa. (2019, May 20). YouTube. Retrieved from http s://www.youtube.com/watch?v=_ZztDN5XX5o&feature=youtu.be
High current is a hazard to the turbine and technicians alike. For the turbine, lightning strikes can damage blades and short out electric equipment when not sufficiently grounded. There are ways to handle the high current in lightning. Inside the nacelle, technicians have to diagnose issues to get troubled turbines back into production as soon as possible. Several new smart electrical meters can assist that work.
ECCU_ECCU 211_FORMATO TRABAJO FINAL_INGLÉS TÉCNICO_ANTONIO DELGADO MONCADA.pptxEnocngelArcentalesVa
Es es trabajo final de inglés técnico. Esta todo especificado sobre el tema relacionado al mantenimiento eléctrico y a la textilería. El trabajo final es del cuarto semestre de la carrera de Electricista Industrial. Inglés técnico. Espero que les sirva mucho. Un abrazo a la distancia y muchas bendiciones.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Courier management system project report.pdfKamal Acharya
It is now-a-days very important for the people to send or receive articles like imported furniture, electronic items, gifts, business goods and the like. People depend vastly on different transport systems which mostly use the manual way of receiving and delivering the articles. There is no way to track the articles till they are received and there is no way to let the customer know what happened in transit, once he booked some articles. In such a situation, we need a system which completely computerizes the cargo activities including time to time tracking of the articles sent. This need is fulfilled by Courier Management System software which is online software for the cargo management people that enables them to receive the goods from a source and send them to a required destination and track their status from time to time.
Cosmetic shop management system project report.pdfKamal Acharya
Buying new cosmetic products is difficult. It can even be scary for those who have sensitive skin and are prone to skin trouble. The information needed to alleviate this problem is on the back of each product, but it's thought to interpret those ingredient lists unless you have a background in chemistry.
Instead of buying and hoping for the best, we can use data science to help us predict which products may be good fits for us. It includes various function programs to do the above mentioned tasks.
Data file handling has been effectively used in the program.
The automated cosmetic shop management system should deal with the automation of general workflow and administration process of the shop. The main processes of the system focus on customer's request where the system is able to search the most appropriate products and deliver it to the customers. It should help the employees to quickly identify the list of cosmetic product that have reached the minimum quantity and also keep a track of expired date for each cosmetic product. It should help the employees to find the rack number in which the product is placed.It is also Faster and more efficient way.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Forklift Classes Overview by Intella PartsIntella Parts
Discover the different forklift classes and their specific applications. Learn how to choose the right forklift for your needs to ensure safety, efficiency, and compliance in your operations.
For more technical information, visit our website https://intellaparts.com
Sachpazis:Terzaghi Bearing Capacity Estimation in simple terms with Calculati...Dr.Costas Sachpazis
Terzaghi's soil bearing capacity theory, developed by Karl Terzaghi, is a fundamental principle in geotechnical engineering used to determine the bearing capacity of shallow foundations. This theory provides a method to calculate the ultimate bearing capacity of soil, which is the maximum load per unit area that the soil can support without undergoing shear failure. The Calculation HTML Code included.
Automobile Management System Project Report.pdfKamal Acharya
The proposed project is developed to manage the automobile in the automobile dealer company. The main module in this project is login, automobile management, customer management, sales, complaints and reports. The first module is the login. The automobile showroom owner should login to the project for usage. The username and password are verified and if it is correct, next form opens. If the username and password are not correct, it shows the error message.
When a customer search for a automobile, if the automobile is available, they will be taken to a page that shows the details of the automobile including automobile name, automobile ID, quantity, price etc. “Automobile Management System” is useful for maintaining automobiles, customers effectively and hence helps for establishing good relation between customer and automobile organization. It contains various customized modules for effectively maintaining automobiles and stock information accurately and safely.
When the automobile is sold to the customer, stock will be reduced automatically. When a new purchase is made, stock will be increased automatically. While selecting automobiles for sale, the proposed software will automatically check for total number of available stock of that particular item, if the total stock of that particular item is less than 5, software will notify the user to purchase the particular item.
Also when the user tries to sale items which are not in stock, the system will prompt the user that the stock is not enough. Customers of this system can search for a automobile; can purchase a automobile easily by selecting fast. On the other hand the stock of automobiles can be maintained perfectly by the automobile shop manager overcoming the drawbacks of existing system.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
2. UNCLASSIFIED
UNCLASSIFIED
ACTION: Apply electrical systems safety requirements
CONDITIONS: Given a classroom environment, regulatory guidance,
and applicable personal protective equipment,
STANDARD: Apply regulatory safety requirements to electrical
systems in accordance with the NFPA 70E, NEC, NESC, and EM 385-
1-1.
3. UNCLASSIFIED
UNCLASSIFIED
• Safety Requirements: None
• Risk Assessment Level: Low
• Environmental Considerations: None
• Evaluation: Students will be evaluated on this
block of instruction during the Electrical Systems
and Design Examination 2. Students must
receive a score of 70 percent or above to receive
a GO.
4. UNCLASSIFIED
UNCLASSIFIED
NFPA 70E National Electric Code (2017)
NFPA 70 Standard for Electrical Safety in the Workplace
(2015/2018)
NESC® National Electrical Safety Code. 2017
EM 385-1-1
OSHA
Safety and Health Requirements. (30 Nov 2014)
29 CFR 1910
5. UNCLASSIFIED
UNCLASSIFIED
• LSA 1: Understand Basic Terms and References
• LSA 2: Classify electrical hazards.
• LSA 3: Understand limits of approach
• LSA 4: Arc Flash
• LSA 6: Identify rubber line safety equipment and describe
the purpose, inspection, testing, and storage requirements
(if applicable) for each
S3D03-5
Lesson Objectives
10. UNCLASSIFIED
UNCLASSIFIED
Electrical Shock
• Occurs upon contact of body part with electrical source
• Small currents can be imperceptible
• Large currents make it impossible to let go and may
cause serious injury or death
• 30,000 nonfatal shock accidents occur each year and
1000 fatalities from electrocution with more than half
attributed to systems with less than 600V
• Fourth leading cause of industrial fatalities, surpassing
traffic, homicide, and construction accident deaths
11. UNCLASSIFIED
UNCLASSIFIED
Arc-Flash
• Occurs when electric current passes through air
• Ungrounded conductor to ungrounded conductor
• Ungrounded conductor to grounded conductor
• Arc temperatures can reach 35,000ºF
• Burns the skin directly
• Causes ignition of clothing, adding to burn injuries
• Most hospital admissions are due to arc flash, not shock
• Over 2000 admissions to burn centers per year
• Can kill at distances of 10ft
12. UNCLASSIFIED
UNCLASSIFIED
Arc-Blast
• Explosive expansion of air and metal in the arc path
• Copper – 1:67,000 times expansion from solid to vapor
• Dangers involve:
• High pressures – Easily exceed hundreds or
thousands of lbs/ft2, rupturing eardrums and
collapsing lungs
• Sound – Levels can exceed 160 dB
• Shrapnel – Surrounding material and molten metal
is expelled away at over 700mph, which can
completely penetrate the body
13. UNCLASSIFIED
UNCLASSIFIED
• What are the three categories of electrical hazards?
• What is electric shock?
• What is an arc flash?
• What is an arc blast?
14. UNCLASSIFIED
UNCLASSIFIED
• NFPA 70E- Appendix C
• Arc Flash Boundary
• Limited Approach
Boundary
• Limited Space
• Restricted Approach
Boundary
• Restricted Space
16. UNCLASSIFIED
UNCLASSIFIED
Safe Approach Distance (limited approach boundary)
• Unqualified persons are safe when they maintain a distance from the
exposed energized conductors or circuit parts, including
• longest conductive object being handled
• cannot contact or
• enter a specified air insulation distance to the exposed energized
electrical conductors or circuit parts.
• Must not cross the arc flash boundary unless they are wearing
appropriate personal protective clothing and are under close supervision
of a qualified person
• Only when continuously escorted by a qualified persons should an
unqualified person cross the limited approach boundary
• Under no circumstance should an unqualified person cross the restricted
approach boundary, where special shock protection techniques and
equipment are required.
17. UNCLASSIFIED
UNCLASSIFIED
Safe Approach Distance
• Determine arc flash boundary
• If boundary must be crossed, appropriate arc-rated protective
equipment must be utilized
• For a person to cross the limited approach boundary and enter the
limited space, the must:
• Be qualified to perform the task
• Be able to identify the hazards and associated risks with the tasks to
be performed
• To cross the restricted approach boundary and enter the restricted
space, qualified persons should meet the following criteria:
• Have an energized electrical work permit authorized by management
• Use PPE that is rated for the voltage and energy level involved.
• Minimize likelihood of bodily contact
• Use insulated tools
19. UNCLASSIFIED
UNCLASSIFIED
Glove Classifications
• Labels
• Cemented onto cuff
• Display size and class
• Test dates – Stamped onto cuff, typically near label
• Testing is required periodically
• Before first issue
• Every 6 months thereafter
20. UNCLASSIFIED
UNCLASSIFIED
Sleeves
• Worn with gloves to protect arms and shoulders
• Same class ratings as gloves
• Require the same care as gloves and regular cleaning,
inspection, and testing
• Also have rubber cemented labels that id size and class
• Test dates typically stamped near labels
• Testing is required periodically
• Before first issue
• Every 12 months thereafter
21. UNCLASSIFIED
UNCLASSIFIED
Blankets
• Covers odd-shaped conductors or equipment
• Some blankets contain a “slot” for increased versatility
• Available in different classes of protection
• Stored in canvas rolls or metal containers for protection
• Held in place with magnets, non-conductive ropes/clamps
• Test dates stamped on blanket, can be placed anywhere
• Testing is required periodically
• Before first issue
• Every 12 months thereafter
22. UNCLASSIFIED
UNCLASSIFIED
Line Hoses
• Cover distribution conductor
• Various lengths, diameters, configurations, and voltage
classes available
• Require regular cleaning/inspection for cuts/corona damage
• Test dates stamped anywhere
• Testing is required periodically
• Upon indication that insulating value is suspect
• Not to exceed intervals of 3yrs
23. UNCLASSIFIED
UNCLASSIFIED
Insulator Hoods
• Available in several styles/types
• Overlap with line hoses
• Available in different voltage classes
• Require regular inspection and cleaning
• Test dates stamped anywhere
• Testing is required periodically
• Upon indication that insulating value is suspect
• Not to exceed intervals of 3yrs
27. UNCLASSIFIED
UNCLASSIFIED
• Understand Basic Terms and References
• Classify electrical hazards.
• Understand limits of approach
• Arc Flash
• Identify rubber line safety equipment and
describe the purpose, inspection, testing,
and storage requirements (if applicable) for
each
