Facility Results Arc Flash Analysis Scope & Process
A detailed arc flash study shall be performed to determine potential arc flash incident energies, arc flash boundaries, shock hazard boundaries and proper personal protective equipment (PPE ) for all energized electrical system equipment tasks for the electrical system studied. Furthermore, a comprehensive electrical system condition audit will also be performed. The engineering scope of the study shall include primary switchgear, primary transformers, and secondary switchgear, but duct, distribution panels, transformers, disconnects and 50+hp motors/capacitor/ATS loads/Rectifiers where feed from main switchgear down to the line side of a transformer 125kVA where the voltage is 240V or higher.Â
Arc Flash Analysis PHASE I
Site Assessment and Electrical System Data Gathering Process
- Accurate, up-to-date information on the facility electrical system is absolutely essential to the analysis:
- Transformer Data – KVA, Voltages, Impedance
- Conductor Sizes and Lengths
- Fuse and Circuit Breaker Data
- Data will be collected in detail from utility up to line side of bus plug or branch circuit panel
- Electric Utility Data – Available Fault Capacity and X/R ratio (minimum & maximum) provided by Utility
- Audit all equipment in the scope for any indications of improper operation or possible life/safety hazard
- Visual Inspection By Certified Electrician
- Develop Accurate Arc Flash One-Line Diagrams
- Include detailed nameplate info.
- Serial Numbers will be applied for easy and accurate identification.
Arc Flash Analysis PHASE II
Engineering Process Utilize data from Phase I to evaluate the power system, complete an Arc Flash Analysis using IEEE 1584 and NFPA 70E. (Performed by a licensed Professional Engineer)
- Short-Circuit Analysis
- Interrupting Rating Analysis
- Determine “Total Clearing Time” at Given Fault Currents required for Arc Flash Analysis
- Determine if protective devices have adequate interrupting capacity for the available short-circuit current in system
- Coordination Problem Review
- Consult on Potentially Dangerous Arc Flash Energy
- Review Opportunities to Reduce Hazard/Risk Category Levels
Arc-Flash Hazard Analysis — compliant to 2011 NEC Section 110.16 & NFPA 70E
- Calculate Incident Energy
- Calculate Flash Boundary
- Determine Hazard/Risk Category
- Specify PPE Requirements
Arc Flash Warning Labels — compliant to ANSI Z 535.4.1998
- Provide Arc Flash Warning Labels to Specified Equipment
- Include Incident Energy, Hazard/Risk Category, Boundaries, and PPE
Arc Flash Analysis PHASE III
Arc Flash Training
This course introduces the student to the hazards of an arc flash event and how to set up an arc flash safety program based on NFPA 70E “Standard for Electrical Safety in the Workplace” Edition. Students will learn the factors affecting arc flash hazards, selection and use of PPE for arc flash protection and equipment labeling requirements. Supplemented by graphic videos and stimulating class discussions this course has the impact required ensuring the student understands the importance of arc flash & shock protection.
Arc Flash Analysis PHASE IV
Qualified Worker Awareness Training
3 Hour Training
The training scope will focus on the qualified workers that is site specific, covering the following;
- NFPA 70E Requirements
- Hazards of an Arc Flash Event
- Proper Use of Safety Equipment
- Selection and Use of Protective Clothing for Arc Flash Protection
- Care of Personal Protective Equipment
- Basics of the Arc Flash Calculations
- Arc Flash Labeling Requirements
- New Electrical Maintenance Requirement
- Value of a Coordination to Reduce Arc Flash Hazard Levels
- Valuable Question and Answer Time
*Site Safety Manager is recommended to attend.
Each participant will have a completion test & receive a personalized awareness completion ID card.
Project Completion is estimated to 25-30 business days from start of project.
A web based Project Management & Reporting site will allow all parties involved to view progress of the entire project at a glance. Reports and status updates will be email weekly.
Managing Change & Remaining Compliant: Looking forward annual audits and updates to your power distribution system will be managed using software called “FlashTrack™”. This Proprietary software allows your employees or sub-contractors to document the changes or add to the existing engineering keeping the program compliant.