Understanding of the project requirement
Understanding of Goals, Objectives and deliverables of the previous project.
The Regional Municipal of Durham required conducting comprehensive Arc Flash study to comply the requirements of the Electrical Safety legislation, and CSA Z462.
E2cpm Arc Flash Engineers(E2) have the experience and expertise to calculate Arc flash incident energy and determine the class of personal protection equipment in each case and E2 will provide the labels for each switchboard or panel.
E2cpm will deliver a report of findings outlying each switchboard and panel hazard or risk level and recommend best approach to mitigate those Arc Flash areas found to be of concern.
Arc Flash and Shock Hazard calculations are performed by electrical engineers to identify the maximum expected incident energy if an Arc Fault were to occur. To perform these calculations, it is necessary to understand the manner and method in which a system is grounded. The potential short circuit levels throughout the system need to be known and a complete set of protective device settings are required. Given this information, engineers perform a series of calculations, looking at different operating conditions, loading levels, and generation levels. Worst case results are compiled. From these results incident energy levels are categorized (currently based upon the NFPA 70E standard) and documented for the entire three-phase electrical system. Labeling is required, to notify all site staff and contractors regarding the potential hazards they might face when working at or near the electrical system.
Determine if the potential for a hazardous arc-flash exists in equipment that employees work on or near while the equipment is exposed and energized.
Determine the minimum safe working distance (arc flash boundary) from the equipment.
Determine the appropriate PPE (Personal Protection Equipment) required to avoid a permanent injury from an arc flash.
Reduce or eliminate as many of the potential arc flash hazards identified in the analysis as possible.
Inform workers of the results and provide the arc flash hazard and electrical safety training.
Updated One-Line Electrical Drawings
Arc Flash & Electrical Hazard Analysis
Short Circuit Analysis
Recommendations and Corrective Actions Report
Compliance with CSA Z462
Suggested approach appropriate to addressing the Region’s Goals
E2cpm Arc Flash understands that each facility and plant is unique and has different needs. That’s why we customize our programs for our customers and provide best solution to fit your needs and your budget. We conduct the process based on our experience and expertise in this field and our procedure is the most cost effective activity. First phase of Arc Flash study is collecting data from site. This activity is the labour intensive phase and costly for the most of the companies. CSE have done this type of work very fast even in some cases drawings weren’t available. CSE Engineers and Electricians are so harmonize to expedite the procedure. Panels without having drawings this the condition we had same experience and we know it is our responsibility to prepare and collect all the information from the site such as breakers setting, fuses type , cables size and length, We do these thing because the important part of Arc Flash Study is the correct and valid data, and CSE will validate the data and double check even for the panels which drawing is available, we make sure data are valid, then we processed to provide the input to the model in our software to calculate the incident energy. We make the process very simple and fast from data collection, validation, and modeling and we never stop the process, if it need the data we go to site and we collect the information, for places which is require to get the permit from Municipal we make a plan and schedule to prevent any interruption of normal activity, we adjust our activity with municipal maintenance schedule, in the most of cases client wants to be a part of this activity because they will learn more about Arc Flash and Safety, field data collection. In such a condition speed of data collection from the site will increase, and most of the Client Technician will get a chance of on site training as well.
Work Plan Steps
E2 Work plan Steps are:
Step1: UNDERSTANDING CUSTOMER NEEDS & DATA COLLECTION
Step is the labor intensive phase of the arc flash hazard study, typically taking half of the total effort required to complete the analysis. After understanding the customer’s needs and situation, data on your electrical system is collected. Collection is done on-site by qualified persons in appropriate PPE. Data collected for the analysis includes transformer nameplates, conductor sizes/number per phase/lengths, motors data, circuit breaker catalog numbers and settings, fuse catalog numbers, and on-site generator nameplates all these data is required in order to complete an accurate analysis. Generally all the data is collected without disturbing facility operations. The data includes developing one-line electrical drawings for your facility. Providing us with current one-line electrical drawings can be very helpful in the data collection process and help speed the process.
Step 2: ENGINEERING CALCULATIONS AND HAZARD ANALYSIS
Step 2 is a multi-facetted phase beginning with the input of the data from the one-line
diagrams and collected data into the analysis program. Using the program, a licensed Professional Engineer will determine the following values for each point of concern in the facility:
Bolted fault current
Arc fault current
Fault clearing time
Arc flash boundary
Personal protective clothing requirements
In addition, we will provide you with a Short Circuit Analysis and a Coordination Analysis in the report.
Step 3: REPORT PRESENTATION & CONSULTING
Step 3 includes delivery of the report and a presentation of the results of the “Arc-
Flash Hazard Analysis” The report will also include “Findings” of concern:
Inadequate interrupting ratings,
Improper coordination of protective devices
Itemized list of arc flash hazards greater than a Hazard/Risk Category 1
Recommendations and corrective actions for each of the “Findings” of concern.
We will review the findings and recommendations with the management team. This review includes understanding what changes might want to be implemented before the arc flash labeling is done. As part of Step 3, consulting assistance can be provided to develop or update the facility’s Electrical Safety Program and Electrical Policies to address the “Findings” of the Arc Flash Hazard Analysis. This may also include assistance in selection of the appropriate PPE.
Step 4: ARC FLASH LABELING
CSA Z462 and NFPA 70E require labeling of equipment to warn of potential arc flash
hazards. Subject to the requirements of the facility, labels are provided and attached for each analyzed point of concern. The labels provide information about voltage, arc flash boundary, and required PPE.
Step 5: TRAINING
Training is a critical part of completing the arc flash program. Labels and equipment aren’t any good if the workers don’t understand how to properly work with them. In addition, many arc flash problems can be eliminated with a proper preventive maintenance program.
E2 will provide on-site training for workers and management. The training is specifically designed for electricians, technicians, contractors, vendors and service personnel that might be working around energized equipment. Post analysis training is most often an on-site session at a time selected by the customer.
Sample Arc Flash study from a part of previous study
Arc Flash incident energy result in tabulated format
ETAP Single Line Diagram
ETAP TCC Curve
Training is a critical part of any electrical safety or arc flash program. Labels and equipment aren’t any good if the workers don’t know understand how to properly work with them. In addition, many arc flash problems can be eliminated with a proper preventive maintenance program.
E2 Arc Flash Protection is the provider of facility and maintenance training and offer on-site training. The training is specially designed for electrician, technicians, contractors, vendors and service personnel that might be working around energized equipment..
Why Arc Flash Protection?
The shock hazard has gotten the most attention in electrical safety.There variety of reasons of an arc flash can occurs but most of them are preventable, most arc flashes occur when maintenance worker are manipulating live equipment for testing or repair and accidently cause fault, improper tools, improper electrical equipment, corrosion of equipment, lack of training are just some of events that can lead to arc flash.
E2cpm- Arc Flash Engineers
E2cpm is providing services as an electrical engineering specialist to analyze power system and study for proposed or existing electrical system.
Since 2007 E2 Arc Flash Protection department has been conducting the detail arc flash study and performing calculation of incident energy, arcing current and flash protection boundaries.
E2 Arc Flash Protection combines the cutting edge knowledge and expertise of the NFPA 70 and CSA Z462 along with electricians and professional engineers to bring you the most comprehensive arc flash package available in the market.
Arc Flash and Shock Hazard Analysis are important aspect of modern power system analysis. E2 Arc Flash engineering group is dedicating group with expertise in Arc Flash study to provide safety-oriented information necessary to minimum risk operation of electrical systems.
The E2 Arc Flash Protection Analysis, Labeling and Safety Program is one of the most comprehensive in the industry and offers customers a variety of options to choose from. Customers may elect to implement the complete program or to just select particular services for their needs.
Benefit of Power System Study:
Reduce System Cost
Locate power losses.
Choose devices correctly
Detect Grid Problem
We deliver the optimum of studies:
Balanced and unbalanced load flow.
Short Circuit Analysis
Protection Devices Coordination
Prevention & Reliability
Power Factor correction