Our proposals are valid for 120 days. The project schedule is dependent on the date a Purchase Order is received and current workload. Project duration is dependent on scope and timeliness of utility and in-plant power system information collection.

Scope of Work

The deliverable will be one Arc Flash Study Binder Portfolio containing the Arc Flash Summary report, Arc Flash Model Drawings, Incident Energy Summary Report, Arc Flash Hazard Label Types Required, Utility Information, Over Current Device settings, and Short Circuit Current Equipment Evaluation Report. The information contained within the Arc Flash Study binder reports will also be provided on one USB memory drive. All electronic copies will be in .pdf format. The software model information will be provided in the native software file structure, which includes SKM, ETAP, EasyPower, etc.

This proposal includes a report of any non-compliant results from the Electrical System Protective Device Coordination Evaluation Report and the Electrical System Fault Current Evaluation Report. This provides identification of any incorrectly coordinated devices and devices subjected to larger than designed fault current. In our experience as Professional Engineers, these two reports (in their complete versions) generate a large amount of detailed paperwork that requires sorting through to find the nuggets of value. Our method summarizes these nuggets of value in a much more efficient manner.

Possible mitigation suggestions for non-compliant devices listed above may be included based on the complexity of the arc flash study. Detailed engineering study of mitigation techniques is available at the hourly rate specified in this proposal.

A protective device coordination study is a coordination analysis or study of all the protective devices and is not a required step to perform an Arc Flash Hazard Analysis or study of a facility’s power system to determine the hazards and required PPE or methods to reduce or mitigate the risk of electrical arc flash exposures. A protective device coordination study is not provided with this arc flash hazard study as it generally does not provide decreased incident energy exposure levels.

Incident energy mitigation, mis-coordination, and device evaluation services can be provided. This additional detailed analysis is not included in this proposal. Additional electrical system analysis is available at our standard rate plus expenses.

This quote proposal is based on data received from multiple sources, drawings, lists, etc., and the e-Hazard arc flash analysis quote request form. If additional equipment is discovered during the site visit, it can be added to the project at our standard rate plus expenses.

Data Required for Arc Flash Study: The data collection for a study of this type is a very critical and detailed portion of the study. The required data includes the following for every circuit to be included in the study:

– Incoming utility available short circuit current, and protective device characteristics
– Transformer size, type, impedance
– Ampacity and length for each circuit (drop)
– Protective device (fuse, circuit breaker, etc.) size, type, settings, & manufacturer
– Complete one-line connection drawing of the devices in the study

MCC and Panel Board Bracketing: For Motor Control Centers (MCC’s) and Panel Boards (CB Panels), it is recommended to model the main bus of each and calculate typical examples of highest and lowest loads with longest and shortest circuits to create the known best and worst case conditions within the bracketed MCC or Panel Board. Based on these results, all other circuits fed from these MCCs or Panel Boards will be within the calculated energy ranges. Using this method will reduce the number of calculations required as well as the cost of the study without reducing the effectiveness of the study. All field devices will be labeled with the appropriate PPE level, nominal system voltage, and arc flash hazard boundary, fully meeting the requirements of NFPA 70E. However, there will not be a specific Incident Energy level calculated for each and every switch. This will further enhance the process of creating and applying labels to the field devices by allowing the use of “generic” labels within each category of PPE, i.e., Level 0, Level 1, Level 2, Level 3, Level 4, etc. This is a perfectly legitimate and acceptable method of determining the Arc Flash Hazard present. This also will enable future equipment changes to be labeled based on current information from the bracketed study, without the need to recalculate. This proposal is based on the MCC and Panel Board Bracketing method.

Bus Duct Bracketing: For long bus ducts where many of the bus duct circuit breakers/switches have the same rating, it is recommended to bracket switches within certain distances (100-300 ft.) and calculate typical examples of highest and lowest loads with longest and shortest circuits to create known best and worst case conditions within the bracketed distance. Using this method will reduce the number of calculations required as well as the cost of the study without reducing the effectiveness of the study. All field devices will be labeled with the appropriate PPE level, nominal system voltage, and arc flash hazard boundary, fully meeting the requirements of NFPA 70E. However, there will not be a specific Incident Energy level calculated for each and every switch. This will further enhance the process of creating and applying labels to the field devices by allowing the use of “generic” labels within each category of PPE, i.e., Level 0, Level 1, Level 2, Level 3, Level 4, etc. This is a perfectly legitimate and acceptable method of determining the Arc Flash Hazard present. This also will enable future equipment changes to be labeled based on current information from the bracketed study, without the need to recalculate. This proposal is based on the Bus Duct Bracketing method.

Per the information provided and discussions with facility personnel, the Electrical Arc Flash Study will be based upon any available drawings, site survey sketches, and notes of the electrical system components obtained from the owner.

The owner is responsible for providing to e-Hazard’s representative the primary electrical service(s) voltage, available electrical fault current, and over-current device or clearing time provided by the electrical utility.

This information shall be requested by the owner to the utility and made available to e-Hazard’s representative prior to the site visit. The owner shall request this information from the Utility providing the electrical service; this is typically requested to the owner’s customer service representative of the utility providing the service.

This proposal is based on the owner’s personnel escorting and assisting our consultant to collect device information, locations, and the one-line diagrams if available as required. We will use the latest software, which includes SKM, ETAP, EasyPower, etc. This is based on IEEE 1584 to determine the arc flash hazards as they are applicable to the latest NFPA 70E standard. SKM will be the default software unless otherwise specified. We will use the existing one-line diagrams (if available) for verification as much as possible and the information provided by the owner to determine the applicable electrical arc flash hazards. Labels will be printed by e-Hazard per the latest NFPA 70E edition and the latest ANSI Z535 edition requirements. Labels will be printed on “Brady” B-588 indoor/outdoor vinyl stock with appropriate ANSI header requirements per the hazard category. This proposal includes printing and installing the arc flash labels, with the assistance of owner’s personnel during installation. This will consist of one label per switch section at the main switchgear, one on each bus duct section, one on the floor end of each bus duct drop, one per main panel board, and one per field end device of each panel board circuit. Additional labels supplied at our standard rate. Installation labor for additional labels is available at a nominal charge if necessary.

Infrared Scanning (if purchased)

Infrared scanning will be conducted of the main distribution center, unless otherwise noted. E-Hazard will identify hot spot anomalies. Evaluation of uneven loads based on heat dissipation. Suggestive correction based on current and voltage readings. Full-color imaging and graphical report for each designated anomaly.

Infrared scanning only provides the scanning and images of problem areas. Once problem areas are scanned and digitized, any necessary recommendations to address these issues will be provided in the final report.

Any alteration or deviation from specifications involving extra costs will be executed only upon written orders and will become an extra charge over and above the estimate.