Arc Flash Report
Arc Flash Study Short Circuit Study Coordination Study
Project Name City, State
Revision # – Date of Signing
By: Project Manager, PM Professional Engineer, PE Interstates Engineering, Inc. Sioux Center, Iowa IE Job #: 20-XX-XXXX
Revisions & Table of Contents
Revisions:
Revision
Date
Prepared By Reviewed By
Comments Initial Issue
x
x/xx/xxxx
Full Name
Full Name
NOTE: Changes made for the most recent revision will be shown in grey for text and clouded on tables, one-lines and TCCs.
Table of Contents:
Section 1: Project Overview
Executive Summary
•
Scope of Work Clarifications
•
•
Section 2: Results
Recommendations Arc Flash Results
•
•
o Normal Scenario o Reduced Energy Let Through o Emergency Scenario (Generator Powered)
Short Circuit Results
•
o Bus 3 Phase Results o Device 3 Phase Results
Protective Device Coordination
•
Section 3: Appendices
• Appendix A: Arc Flash Technical Information
Appendix B: Model One-Lines
•
• Appendix C: Coordination Curves • Appendix D: Model Input Data Report
Appendix E: Abbreviations
•
• Appendix F: Short Circuit Remediation
SITE NAME ARC FLASH STUDY
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INTERSTATES DATE
Section 1: Project Overview
Executive Summary The following document presents the results of an Arc Flash Study performed by Interstates for the COMPANY NAME AND FACILITY in LOCATION. This report includes results for a short circuit study, coordination study, and arc flash study. The purpose of this report is to identify the risks to personnel safety and plant operation. Recommendations have been made where applicable to address all underrated equipment, protective device miscoordination, and arc flash issues. Summary of Results – Arc Flash The arc flash study results show that the site has a <high, moderate, low> arc flash hazard as shown on Table 2: Arc Flash Evaluation Report . <describe main reasons for high arc flash. One sentence per hazard type as a rule. Use list if more than two items> Recommendations have been made to reduce the arc flash hazard on equipment above <12 or 8 depends on client, use 12 unless otherwise noted> cal/cm 2 in Table 1: Recommendations . Summary of Results – Short Circuit The results of the short circuit study showed that the site has a <large number, small number, couple, etc.> of underrated equipment as shown on Table 3: Bus Evaluation Comprehensive Fault Report and Table 3A: Protective Device Evaluation Comprehensive Fault Report . Underrated equipment needs to be addressed as it presents a large impact on personnel safety. Appendix F: Short Circuit Remediation presents a small overview of short circuit ratings as well as a recommended process for remediating the underrated equipment. Summary of Results – Protective Device Coordination The results of the protective device coordination study showed that the site has <large number, small number, couple, etc.> of mis-coordinated breakers. Table 4: Protective Device Settings Report shows the settings of each breaker and Appendix C: Coordination Curves shows the time current curves (TCCs) for the main equipment that was reviewed. The coordination study examined the tripping characteristics of the breakers, fuses, and relays on site to ensure that everything will trip in the proper order for plant operation. Coordination between protective devices and motors was also examined to minimize any potential for nuisance tripping. Recommendations for improving coordination have been made in Table 1: Recommendations . Site Summary The site consists of <x> services which include <service 1> which is fed by a <pole mount? Padmount?> transformer at <voltage>, <one service 2> which is fed by a <pole mount? Padmount?>2500kVA, 12470V to 480/277V padmount transformer at <voltage>, etc. The point of common coupling with the utility is located <at each xfmr? On the MV?>. Backup generator(s) are used on site support <what equipment>. The general condition of equipment on site. Scope of Work This Arc Flash Study is being undertaken at the request of CUSTOMER’S COMPANY to analyze the electrical system in the FACILITY AND/OR AREA IN SCOPE in conjunction with PROJECT NAME CAUSING CHANGES. A computer model in the SKM POWER TOOLS power analytics software was developed from the information gathered and used to calculate the information needed to create the following reports. These calculations are based on the IEEE
SITE NAME ARC FLASH STUDY
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INTERSTATES DATE
1584-2002 standard consistent with the methods defined in NFPA 70E-2017. The changes included in this project require an arc flash update because the NAME SPECIFIC CHANGES HERE invalidates old arc flash information or require arc flash information to be generated for new equipment. The following report includes a clarification of the information used during calculations; a presentation of recommendations generated from the results of the study; arc flash results, short circuit results, and coordination results; and supplementary appendices providing additional information about the studies. Any changes to the electrical system of the facility may affect the arc flash ratings of the electrical equipment and invalidate the results of this study. For this reason, it is recommended that the arc flash for the entire facility be re-evaluated on a regular basis not exceeding five years to account for such changes (as specified by NFPA 70E). -> INCLUDE IF SC AND COORD NOT GIVEN This report does not include short circuit or coordination studies because THEY WERE DONE PREVIOUSLY IN ANOTHER REPORT. The results given assume that the settings and equipment ratings given in these previous reports remain valid.
Clarifications Information Received and Collected
The information used for this arc flash study was collected during an on-site audit performed on DATES and included information like wire length, size, and type; breaker information and settings; enclosure ratings; and transformer information. Additional information was also taken from EQUIPMENT ORDERS AND EXISTING ONE- LINES to supplement the data collected during the site walk-through. Short circuit availability at the service transformers was given to Interstates by UTILITY REP [phone: (XXX) XXX-XXXX; email: XXXX@XXXXX.com] from POWER COMPANY on DATE. NOTE: the impedance should have an asterisk if assumed (for main xfmr); X/R should be included if given Service Name 3P Availability (A) L-G Availability (A) Transformer Size (kVA) Transformer Impedance (%) X/R Ratio Assumptions The following assumptions were made when performing the arc flash hazard analysis for the COMPANY NAME AND LOCATION facility: 1. Utility Contribution a. There was no available fault contri bution from the utility so an “infinite bus” assump tion was used. Specifically, 300 MVA was used on the primary of the utility transformer. Scenarios will be run at 100%, and 50% of the maximum let-through of the transformer with the worst case scenario for arc flash hazard. 2. Transformer Tap a. Due to software limitations, a tap of -2.5 was used on the primary side of the service transformer(s). This was used to ensure a more accurate result of the load flow and voltage drop calculations. 3. Short Circuit Ratings of Unlisted Enclosures
a. Disconnects and panels without markings indicating short circuit ratings were estimated to have a short circuit rating appropriate for the style of gear indicated. If no rating could be determined, 10 kASCR or the lowest rated breaker in a panel was assumed to be the kASCR.
SITE NAME ARC FLASH STUDY
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INTERSTATES DATE
i. XXX was assumed to have a short circuit rating of XXkA. This is typical for a XXXXXX of this type. 4. Protective Devices a. XXXX BREAKER/FUSE which was found to be a XXXX BREAKER/FUSE was assumed as an XXXX BREAKER/FUSE. This was assumed because the actual BREAKER/FUSE was not available in the modeling software and the trip characteristics of the assumed BREAKER/FUSE closely match that of the one found on site. WHY WAS THE ASSUMPTION MADE? b. In instances of obsolete or unmarked molded case circuit breakers of 225A or less, breakers were estimated as closely as possible to the actual breaker type based on the manufacturer, frame size
and short circuit ratings as available in modeling software and data collected. c. XXX Feeder circuit breaker was assumed to have a TYPE setting at XXXX. 5. Cable Size
a. In the case of installations where equipment could not be opened either due to inaccessible or faulty defeat mechanisms and plant operation, cables were assumed to have been installed in a manner consistent with the rest of the site’s installation. Assumptions on the cable size were made according to the size of the breaker or equipment rating that the assumed cables feed based on standard practices. 6. Single-Phase Equipment a. Single-phase equipment is not accounted for in IEEE 1584-2018 as no conclusive research has been done to establish a consistent calculation method. Therefore, all single-phase equipment in this report has been run using the 3-phase calculation methodology. 7. Motor Groups a. For the motor loads, the motors of 50HP or less were grouped together and modeled as one group motor load in the model. The single motor group shown contains the number of motors in the equipment and with the HP taken as the average HP of the motors. In most cases grouped motors will not be included on TCCs for motor starting. This assumption has been made as motors of 50 HP or less are not commonly a problem for motor starting and grouping of motors in this way remains accurate for the calculations involving motor loading. 8. XFMR Impedances a. XFMR-XXX had an impedance estimated at XX%. WHY WAS THE ASSUMPTION MADE?
This information was necessary for creating a model of the electrical system but was not available or accessible at the time of the audit. These assumptions were made to model the system as accurately as possible while still providing the worst-case arc flash value for the equipment.
SITE NAME ARC FLASH STUDY
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INTERSTATES DATE
Section 2: Results
Recommendations
Recommendations have been provided to eliminate or minimize arc flash hazards, short circuit violations, coordination issues, and NEC violations. Table 1: Recommendations on the following pages provides a brief description of each recommendation; further information may be found in the results sections or appendices. Each recommendation has been given a priority ranking from 0 to 5, based on factors such as personnel safety, electrical equipment safety, and accepted practices in industry. The rankings should be interpreted using the following scale. - A ranking of 5 represents a very urgent item that poses a significant risk to personnel and plant safety. - A ranking of 3 represents an issue that should be discussed and a plan put in place for remediation. - A ranking of 1 represents a low priority issue that should be discussed, but action may not be needed. - A ranking of 0 represents an item included for informational purposes only, no change is needed.
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TABLE 1: RECOMMENDATIONS
RECOMMENDATION NUMBER
RECOMMENDATION TYPE
EQUIPMENT INVOLVED
RECOMMENDED CHANGE
PRIORITY
PROBLEM STATEMENT
RECOMMENDED SETTINGS
Refer to Table 3: Bus Evaluation Comprehensive Fault Report . All equipment listed in red has failed the equipment evaluation and should be remediated in the method detailed in Appendix F of this report. Refer to Table 3A: Protective Device Evaluation Comprehensive Fault Report . All equipment listed in red has failed the protective device evaluation and should be remediated in the method detailed in Appendix F of this report. The switchboard is directly connected to a service transformer with no main breaker protection. This is typical of many installations and no change is recommended. If this is desired to be addressed, further engineering analysis is required based on the site and safety procedures to implement an appropriate solution. Possible solutions include MV work, Installation of an upstream disconnect to move the hazard from commonly used work spaces or adjustments of procedure to minimize risk. We recommend installing a main circuit breaker in the switchboard that feeds the feeder breakers and can lower the incident energy. Further engineering is required if this is desired. We recommend installing a circuit breaker in the switchboard to feed the CAP DISC. This would limit the arc flash hazard and also remove a dangerous tap. Further engineering analysis is required based on the site and safety procedures to implement an appropriate solution. Due to the missing dataplate, the size of the transformer and impedance had to be assumed. We recommend confirming the transformer size by procuring as built drawings or verifying from previous one-lines. Due to the high arc flash and NEC code violation (NEC 240.4A) on the secondary side we recommend this distribution be re- engineered. After confirming the circuit breaker settings, we recommend changing the breaker settings on the Boiler RM Panel breaker as shown in the recommended settings column to the right. This will improve coordination with Air Compressor 5 and reduce the chance of nuisance tripping or breakers not tripping in proper order. See TCC 130- 01 PANEL 2 & TCCR 130-01 PANEL 2
All equipment listed in red on Table 3: Bus Evaluation Comprehensive Fault Report
Equipment is underrated or assumed to be underrated for short circuit.
1
3
Short Circuit
N/A
All protective devices listed in red on Table 3A: Protective Device Evaluation Comprehensive Fault Report
Equipment is underrated or assumed to be underrated for short circuit.
2
3
Short Circuit
N/A
Gear has a high arc flash hazard due to connection directly to a service transformer.
3
0
Arc Flash
MAIN SWBD
N/A
Gear has a high arc flash hazard due to connection directly to the main switchboard with no upstream protection. The Cap Disconnect has no secondary protection after the transformer.
4
0
Arc Flash
CAP DISC
N/A
FRONT OFFICE DISC S. SHOP TEST DISC S. CRYOVAC DISC PANEL 7 DISC N. CRYOVAC DISC OFFICE LGTS DISC
Gear has a high arc flash hazard due to a direct connection to a 112.5kVA transformer.
5
3
Arc Flash
N/A
From: INST - HI To: INST - 2
There is miscoordination between the protective devices for Boiler RM Panel and Air Compressor 5.
6
1
Coordination
Boiler RM Panel
SITE NAME ARC FLASH STUDY
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INTERSTATES DATE
TABLE 1: RECOMMENDATIONS
RECOMMENDATION NUMBER
RECOMMENDATION TYPE
EQUIPMENT INVOLVED
RECOMMENDED CHANGE
PRIORITY
PROBLEM STATEMENT
RECOMMENDED SETTINGS
After confirming the circuit breaker settings, we recommend changing the breaker settings on the Air Compressor 5 breaker as shown in the recommended settings column to the right. This will improve coordination with Boiler RM Panel and reduce the chance of nuisance tripping or breakers not tripping in proper order. See TCC 130-01 PANEL 2 & TCCR 130-01 PANEL 2 After confirming the circuit breaker settings, we recommend changing the breaker settings on the 10000 Mepaco breaker as shown in the recommended settings column to the right. This will improve coordination with Panel 2 and reduce the chance of nuisance tripping or breakers not tripping in proper order. See TCC 140-02 10000 MEPACO & TCCR 140-02 10000 MEPACO We recommend installing a circuit breaker in the MCC to feed Panel F. This would eliminate the use of a tap system. Further engineering analysis is required based on the site and safety procedures to implement an appropriate solution. We recommend installing panic hardware on the electric room door and also ensuring the door swings out for a safe and clear exit. We recommend installing a main circuit breaker in the panels listed. The installation of a main circuit breaker would allow for downstream protection as well as eliminating any NEC violations. If a main circuit breaker cannot be installed another option would be to install a fused disconnect. Further engineering analysis is required based on the site and safety procedures to implement an appropriate solution. We recommend installing a feeder breaker in the switchboard for each panel listed. The installation of feeder breakers would allow for upstream protection of the panels as well as eliminating any NEC violations.
From: INST - HI To: INST - 2
There is miscoordination between the protective devices for Air Compressor 5 and Boiler RM Panel.
7
1
Coordination
Air Compressor 5
From: INST - HI To: INST - 3
There is miscoordination between the protective devices for 10000 Mepaco and Panel 2.
8
1
Coordination
10000 Mepaco
The distance of the tap is more than 10 feet and less than 1/3 of the ampacity of the Refrigeration MCC feeder breaker. NEC 240.21 (B)(4)
9
3
NEC
Panel F
N/A
Main Electric Room door does not have safety panic hardware and the door swings in. NEC 110.26 (C)(3)
10
3
NEC
Main Electric Room
N/A
Panel C Chiller RM LV Panel Maint Shop Panel C
The panels listed on the left do not provide any secondary protection. NEC 240.21 (C)
11
3
NEC
N/A
Panel 1 Panel 2 Panel 3 Panel 4
The panels listed on the left are not legal taps per the NEC. NEC 240.21 (C)
12
3
NEC
N/A
SITE NAME ARC FLASH STUDY
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INTERSTATES DATE
Section 2: Results Arc Flash Results
The Arc Flash Study was conducted to find out what personal protective equipment (PPE) is needed at each switchboard, panelboard, control panel, and motor control center. PPE is only needed if the owner chooses to work on the equipment live. A warning tag will need to be clearly visible on each switchboard, panelboard, industrial control panel, and motor control center. The tag will say “WARNING Arc Flash and Shock Hazard Appropriate PPE Required”. Below is an example of the type of tag to be installed on the electrical equipment. The information included on the tag corresponds to the arc flash tag information generated by the software arc flash module. The following pages present Table 2: Arc Flash Evaluation Report for the equipment that is potentially subject to live work at this facility. Load side and line side refers to exposure to either the load side or the line side of the main protective device of the equipment. Load side is after the protective device and inside of its zone of protection. The load side arc flash hazard is typical for most installations and applies when the circuit breaker or fuse is located outside of the equipment or is compartmentalized into an incoming section. Line side exposure occurs when the protective device in the equipment is not isolated, and the incoming connections to the device are exposed. The line side of the protective device is outside of the zone of protection from that device, and so the arc flash hazard is typically higher on the line side. If the line side is exposed, this value is typically used to label the equipment arc flash hazard. The line side calculations have been provided for panelboards, disconnects and enclosures. In the case of switchboards, switchgear and MCCs, both the line side arc flash tag as well as the load side arc flash tag will be installed on the equipment. See Appendix A: Arc Flash Technical Information for technical information regarding arc flash and the protective equipment requirements.
SITE NAME ARC FLASH STUDY
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Below is an example arc flash tag with typically included information with indicators to detail what each piece of information is.
A
B
F
C
G
D
E
H
I
Information descriptions below are done such that the typical name on the tag is shown, followed by the table header on the following pages in parenthesis and a brief description of what the information means. A. Flash Hazard at 18 Inches (Incident Energy): the calculated incident energy. This defines how large the arc flash will be. B. PPE Description: Abbreviated description of the required PPE to access the equipment. See appendix A for further details. C. Glove Class: Rating of insulated glove required based on the voltage of the equipment. D. Short Circuit (Bus Bolted Fault): Maximum amount of current possible to pass through the equipment in a 3 phase to ground fault. Used to determine if the equipment has a proper short circuit rating. E. Shock Hazard (Bus kV): Maximum voltage located within the equipment which defines approach boundaries and glove class. F. Flash Hazard Boundary (Arc Flash Boundary): How far a person needs to be away from open equipment to be safe from permanent harm in the event of an arc flash. G. Limited Approach Boundary: Distance an unqualified and unaccompanied person must be away from the shock hazard (voltage). H. Restricted Approach: Distance that may not be passed without a qualified person, proper PPE, and proper procedure for live work. Dictated by shock hazard (voltage). I. Equipment Name (Bus Name): Name of the equipment as the facility has it named. J. Arc Flash PPE Level: Site definition of what PPE is required to be worn to access the equipment live. May or may not be used depending on the electrical safety program on site. This arc flash tag is a typical tag matching NFPA 70E-2021 and does not show the PPE level. The site specific tag will include this information.
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Table 2: Arc Flash Evaluation Report
Bus Name
Protective
Bus
Bus Prot Dev Prot Dev Trip/
Arc
Electrode
Working Incident
PPE Level
Label #
Device Name
kV Bolted Bolted Arcing Delay Flash Configuartion Distance Energy
Fault
Fault
Fault
Time Boundary
(cal/cm2)
(kA)
(kA)
(kA)
(sec.)
100 DISC [CAP DISC] (CAP DISC)
MaxTripTime @2.0s
0.480 26.48 19.76 16.21
2 19' 7"
VCBB
1' 6"
99.37 Dangerous! # 0001
100 ENC [300HP FES COMP] (300HP FES COMPRESSOR)
100 CB [REFRIGERATION MCC]
0.480 23.24 21.32 17.45 0.055 2' 7"
VCBB
1' 6"
3.19 Level 1
# 0002
100 ENC [CONDENSOR NO 2 FANS] (CONDENSOR NO 2 FANS)
100 CB [REFRIGERATION MCC]
0.480 24.22 22.50 18.39 0.054 2' 7"
VCBB
1' 6"
3.27 Level 1
# 0003
100 ENC [INJECTOR #1 COOLING] (INJECTOR ROOM #1 COOLING
100 CB [INJECTOR #1 COOLING]
0.480 15.90 15.90 13.00 0.0167 1'
VCBB
1' 6"
0.63 Level 0
# 0005
100 MCC [REFRIGERATION MCC] (REFRIGERATION MCC)
100 CB [REFRIGERATION MCC]
0.480 26.44 24.50 19.93 0.0526 2' 9"
VCBB
1' 6"
3.50 Level 1
# 0006
100 PNL [PANEL A] (PANEL A)
100 CB [PANEL ABC XFMR]
0.240 2.99
2.99
1.56
2 4'
VCBB
1' 6"
6.51 Level 2
# 0008
100 PNL [PANEL B] (PANEL B)
100 CB [PANEL ABC XFMR]
0.240 2.99
2.99
1.56
2 4'
VCBB
1' 6"
6.51 Level 2
# 0009
100 PNL [PANEL C] (PANEL C)
100 CB [PANEL ABC XFMR]
0.240 2.99
2.99
1.56
2 4'
VCBB
1' 6"
6.51 Level 2
# 0010
100 PNL [PANEL E] (PANEL E)
100 CB [PANEL E XFMR]
0.240 0.55
0.55
0.29
2 1' 4"
VCBB
1' 6"
1.00 Level 0
# 0011
100 PNL [PANEL F] (PANEL F)
100 CB [REFRIGERATION MCC]
0.480 24.11 22.39 18.30 0.0541 2' 7"
VCBB
1' 6"
3.26 Level 1
# 0012
100 STR [N. ACCUMULATOR STR] (N. ACCUMULATOR STR)
100 CB [REFRIGERATION MCC]
0.480 25.06 23.26 18.98 0.0535 2' 8"
VCBB
1' 6"
3.36 Level 1
# 0013
100 STR [NO. 3 CONDENSOR STR] (NO. 3 CONDENSOR STR)
100 CB [REFRIGERATION MCC]
0.480 25.06 23.26 18.98 0.0535 2' 8"
VCBB
1' 6"
3.36 Level 1
# 0014
100 STR [S. ACCUMULATOR STR] (S. ACCUMULATOR STR)
100 CB [REFRIGERATION MCC]
0.480 25.06 23.26 18.98 0.0535 2' 8"
VCBB
1' 6"
3.36 Level 1
# 0015
100 SWBD [MAIN SWBD] (MAIN SWBD)
MaxTripTime @2.0s
0.480 28.09 22.85 18.71
2 20' 4"
VCBB
1' 6"
106.37 Dangerous! # 0016
110 ENC [CHILL H20 BILGE PMP] (CHILL H20 BILGE PMP)
110 CB [CHILL H20 BILGE PMP]
0.480 9.62
9.62
7.71 0.0167 9"
VCBB
1' 6"
0.35 Level 0
# 0017
110 ENC [GRIND MIX/WIELER] (GRINDING MIX/WIELER GRNDS)
110 CB [GRIND MIX/WIELER]
0.480 22.10 22.10 18.11 0.0167 1' 3"
VCBB
1' 6"
0.92 Level 0
# 0004
110 ENC [GRND/MIX HYD DUMP] (GRND/MIX HYD DUMP)
110 CB [GRND/MIX HYD DUMP]
0.480 9.22
9.22
7.37 0.0167 9"
VCBB
1' 6"
0.33 Level 0
# 0018
110 ENC [MARLEN PMP] (MARLEN PMP)
110 CB [MARLEN PMP]
0.480 6.46
6.46
5.09 0.0167 7"
VCBB
1' 6"
0.22 Level 0
# 0019
110 ENC [PACK OFF CONV] (PACK OFF CONV WEG DRIVE)
110 CB [PACK OFF CONV]
0.480 0.40
0.40
0.40 0.8052 10"
VCBB
1' 6"
0.38 Level 0
# 0020
110 ENC [POLAR MASSAGER S.] (16000 POLAR MASSAGER S.)
110 CB [POLAR MASSAGER S.]
0.480 5.84
5.84
4.58 0.0167 7"
VCBB
1' 6"
0.19 Level 0
# 0021
110 ENC [PUMP CHILL H20 VFD] (PUMP CHILL H20 VFD)
110 CB [PUMP CHILL H20 VFD]
0.480 12.32 12.32
9.98 0.0167 11"
VCBB
1' 6"
0.47 Level 0
# 0022
110 ENC [SEYDELMANN GRNDR] (SEYDELMANN GRNDR)
110 CB [SEYDELMANN GRNDR]
0.480 8.58
8.58
6.84 0.0167 8"
VCBB
1' 6"
0.30 Level 0
# 0023
110 ENC [SUBWAY LINE] (SUBWAY LINE)
110 CB [SUBWAY LINE]
0.480 1.27
1.27
0.98 1.831 2' 11"
VCBB
1' 6"
3.66 Level 1
# 0024
110 PNL [BOILER RM LV PNL] (BOILER RM LV PNL)
110 CB [XMFR MEZZ]
0.240 2.79
2.79
1.45
2 3' 10"
VCBB
1' 6"
6.02 Level 2
# 0007
110 PNL [CHILL ROOM PNL] (CHILL ROOM PNL)
110 CB [CHILL ROOM PNL]
0.480 16.26 16.26 13.30 0.0167 1'
VCBB
1' 6"
0.64 Level 0
# 0025
110 PNL [CHILLER RM LV PNL] (CHILLER RM LV PNL)
110 CB [CHILLER RM XFMR]
0.240 1.88
1.88
0.97
2 1' 6"
VCBB
1' 6"
< 1.2 Level 0
# 0026
110 PNL [PANEL 1] (PANEL 1)
110 CB [PANEL 1]
0.480 27.39 26.11 21.18
0.05 2' 8"
VCBB
1' 6"
3.45 Level 1
# 0027
110 STR [CHILL RM PMP STR] (CHILL RM PMP STR)
110 CB [CHILL RM PMP STR]
0.480 5.73
5.73
4.50 0.0167 6"
VCBB
1' 6"
0.19 Level 0
# 0028
110 STR [FLR LIFT HYD STR] (FLR LIFT HYD STR)
110 CB [FLR LIFT HYD STR]
0.480 9.27
9.27
7.41 0.0167 9"
VCBB
1' 6"
0.33 Level 0
# 0029
120 ENC [AMFEC] (AMFEC)
120 CB [AMFEC]
0.480 6.68
6.43
5.07 0.0161 7"
VCBB
1' 6"
0.22 Level 0
# 0030
120 ENC [AMMONIA COMP #4] (AMMONIA COMP #4)
120 CB [AMMONIA COMP #4]
0.480 18.54 18.01 14.77 0.0167 1' 2"
VCBB
1' 6"
0.75 Level 0
# 0031
120 ENC [AMMONIA COMP #5 VFD] (AMMONIA COMP #5 VFD)
120 CB [AMMONIA COMP #5 VFD]
0.480 14.67 14.67 11.96 0.0161 1'
VCBB
1' 6"
0.55 Level 0
# 0032
120 ENC [AMMONIA COMP #8] (AMMONIA COMP #8)
120 CB [AMMONIA COMP #8]
0.480 19.06 18.54 15.20 0.0167 1' 2"
VCBB
1' 6"
0.77 Level 0
# 0033
120 ENC [BLAST FREEZERS] (BLAST FREEZERS)
120 FUSE [BLAST FREEZERS]
0.480 3.76
3.76
2.92 0.0083 3"
VCBB
1' 6"
0.06 Level 0
# 0034
120 ENC [BOLDT MIXER] (BOLDT MIXER)
120 CB [BOLDT MIXER]
0.480 8.70
8.70
6.93 0.0167 8"
VCBB
1' 6"
0.31 Level 0
# 0035
120 ENC [DRY STORAGE BOX] (DRY STORAGE BOX FORMER)
120 CB [DRY STORAGE BOX]
0.480 2.55
2.55
1.97 0.0219 4"
VCBB
1' 6"
0.10 Level 0
# 0036
120 ENC [EMULSIFIER DUMP] (EMULSIFIER DUMP)
120 CB [EMULSIFIER DUMP]
0.480 7.88
7.88
6.25 0.0167 8"
VCBB
1' 6"
0.27 Level 0
# 0037
120 ENC [HONEY LIFT] (HONEY LIFT)
120 CB [HONEY LIFT]
0.480 0.94
0.94
0.56 0.8472 1' 3"
VCBB
1' 6"
0.93 Level 0
# 0038
120 ENC [N. POLAR DUMPER] (N. POLAR DUMPER)
120 CB [N. POLAR DUMPER]
0.480 1.11
1.11
0.67 1.045 1' 8"
VCBB
1' 6"
1.39 Level 1
# 0039
120 ENC [N. POLAR] (N. POLAR)
120 CB [N. POLAR]
0.480 3.80
3.80
2.95 0.0175 5"
VCBB
1' 6"
0.12 Level 0
# 0040
120 ENC [OPTI HYD PMP] (OPTI HYD PMP)
120 CB [OPTI HYD PMP]
0.480 18.92 18.92 15.51 0.0167 1' 2"
VCBB
1' 6"
0.77 Level 0
# 0041
120 ENC [WIELER GRNDR] (EMULSIFER WIELER GRNDR)
120 CB [WIELER GRNDR]
0.480 20.07 20.07 16.46 0.0167 1' 3"
VCBB
1' 6"
0.82 Level 0
# 0042
120 MCC [MCC IN SHOP] (MCC IN SHOP)
120 CB [MCC IN SHOP]
0.480 7.72
7.72
6.12 0.0167 8"
VCBB
1' 6"
0.27 Level 0
# 0043
120 MCC [VAC RM MCC] (VAC RM MCC)
120 CB [VAC RM MCC]
0.480 14.76 14.76 12.04 0.0167 1'
VCBB
1' 6"
0.58 Level 0
# 0044
120 PNL [EAST MULE PNL LINE] (EAST MULE PNL LINE)
120 FUSE [EAST MULE XFMR]
0.208 1.43
1.43
0.67
2 1' 6"
VCBB
1' 6"
< 1.2 Level 0
# 0045
120 PNL [HAZMAT PNL] (HAZMAT PNL)
120 CB [HAZMAT PNL]
0.208 0.89
0.89
0.42
2 1' 6"
VCBB
1' 6"
< 1.2 Level 0
# 0046
120 PNL [MAINT PNL A] (MAINTENANCE PNL A)
120 CB [MAINT PNL A]
0.480 8.55
8.55
6.81 0.0167 8"
VCBB
1' 6"
0.30 Level 0
# 0047
120 PNL [MAINT SHOP PNL B] (MAINT SHOP PNL B)
120 CB [MAINT SHOP XFMR]
0.208 2.82
2.82
1.32
2 3' 7"
VCBB
1' 6"
5.38 Level 2
# 0048
120 PNL [MAINT SHOP PNL C] (MAINT SHOP PNL C)
120 CB [MAINT SHOP XFMR]
0.208 2.82
2.82
1.32
2 3' 7"
VCBB
1' 6"
5.38 Level 2
# 0049
120 PNL [MAINT SHOP PNL D] (MAINTENANCE PNL D)
120 CB [MAINT PNL A]
0.480 4.84
4.84
3.78 0.017 6"
VCBB
1' 6"
0.16 Level 0
# 0050
120 PNL [PACKOFF BRK RM PNL] (PACKOFF BRK RM PNL)
120 FUSE [EAST MULE XFMR]
0.208 1.40
1.40
0.65
2 1' 6"
VCBB
1' 6"
< 1.2 Level 0
# 0051
120 PNL [PANEL 4] (PANEL 4)
110 CB [PANEL 1]
0.480 26.88 25.56 20.76
0.05 2' 8"
VCBB
1' 6"
3.39 Level 1
# 0052
120 PNL [WEST MULE PNL] (WEST MULE PNL)
120 FUSE [WEST MULE XFMR]
0.208 1.49
1.49
0.70
2 1' 6"
VCBB
1' 6"
< 1.2 Level 0
# 0053
130 DISC [BOILER H20 PMP DISC] (BOILER FEED H20 PMP DISC)
130 CB [BOILER H20 PMP DISC]
0.480 4.18
4.18
3.25 0.0167 5"
VCBB
1' 6"
0.13 Level 0
# 0054
130 DISC [FRONT OFFICE DISC] (FRONT OFFICE PNL DISC)
130 CB [XFMR PNL RM]
0.208 5.06
5.06
2.42
2 5' 5"
VCBB
1' 6"
10.57 Level 3
# 0055
SITE NAME ARC FLASH STUDY
Page 11 of 77
INTERSTATES DATE
Table 2: Arc Flash Evaluation Report
Bus Name
Protective
Bus
Bus Prot Dev Prot Dev Trip/
Arc
Electrode
Working Incident
PPE Level
Label #
Device Name
kV Bolted Bolted Arcing Delay Flash Configuartion Distance Energy
Fault
Fault
Fault
Time Boundary
(cal/cm2)
(kA)
(kA)
(kA)
(sec.)
130 DISC [N. CRYOVAC DISC] (N. CRYOVAC DISC)
130 CB [XFMR PNL RM]
0.208 5.12
5.12
2.45
2 5' 6"
VCBB
1' 6"
10.72 Level 3
# 0056
130 DISC [OFFICE LGTS DISC] (OFFICE LGTS DISC)
130 CB [XFMR PNL RM]
0.208 5.06
5.06
2.42
2 5' 5"
VCBB
1' 6"
10.57 Level 3
# 0057
130 DISC [PANEL 7 DISC] (PANEL 7 DISC)
130 CB [XFMR PNL RM]
0.208 5.24
5.24
2.51
2 5' 7"
VCBB
1' 6"
11.02 Level 3
# 0058
130 DISC [S. CRYOVAC DISC] (S. CRYOVAC DISC)
130 CB [XFMR PNL RM]
0.208 5.12
5.12
2.45
2 5' 6"
VCBB
1' 6"
10.72 Level 3
# 0059
130 DISC [S. SHOP TEST DISC] (S. SHOP TEST STATION DISC)
130 CB [XFMR PNL RM]
0.208 5.06
5.06
2.42
2 5' 5"
VCBB
1' 6"
10.57 Level 3
# 0060
130 ENC [10 TON COLMAC] (10 TON COLMAC)
130 CB [10 TON COLMAC]
0.480 4.48
4.48
3.49 0.0167 6"
VCBB
1' 6"
0.14 Level 0
# 0061
130 ENC [AIR COMP 2] (AIR COMP 2)
130 CB [AIR COMP 2]
0.480 8.97
8.67
6.92 0.0167 9"
VCBB
1' 6"
0.32 Level 0
# 0062
130 ENC [AIR COMP 3] (AIR COMP 3)
130 CB [BOILER RM PNL]
0.480 14.16 13.84 11.27 0.0167 1'
VCBB
1' 6"
0.55 Level 0
# 0063
130 ENC [AIR COMP 5] (AIR COMP 5)
130 CB [AIR COMP 5]
0.480 9.52
9.20
7.37 0.0167 9"
VCBB
1' 6"
0.34 Level 0
# 0064
130 ENC [AIR DRYER] (AIR DRYER)
130 CB [AIR DRYER]
0.480 1.53
1.53
1.18 0.0176 3"
VCBB
1' 6"
0.04 Level 0
# 0065
130 ENC [AMONIA UNIT 6] (AMONIA UNIT 6)
130 CB [AMONIA UNIT 6]
0.480 15.41 14.90 12.16 0.0167 1'
VCBB
1' 6"
0.61 Level 0
# 0066
130 ENC [AMONIA UNIT 7 VFD] (AMONIA UNIT 7 VFD)
130 CB [AMONIA UNIT 6]
0.480 14.84 14.66 11.95 0.0167 1'
VCBB
1' 6"
0.58 Level 0
# 0067
130 ENC [BOILER #2 NORTH] (BOILER #2 NORTH)
130 CB [BOILER #2 NORTH]
0.480 4.46
4.46
3.47 0.0167 5"
VCBB
1' 6"
0.14 Level 0
# 0068
130 ENC [BOILER FD H20 PMP] (BOILER FD H20 PMP)
130 CB [BOILER H20 PMP DISC]
0.480 4.03
4.03
3.13 0.0167 5"
VCBB
1' 6"
0.12 Level 0
# 0069
130 ENC [DUMPER N CLIPPER TIE] (DUMPER N CLIPPER TIE)
130 CB [DUMPER N CLIPPER TIE]
0.480 1.94
1.94
1.50 0.0167 3"
VCBB
1' 6"
0.05 Level 0
# 0070
130 ENC [E PROCESS WALL EVAP] (EAST PROCESS WALL EVAP)
130 CB [E PROCESS WALL EVAP]
0.480 4.48
4.48
3.49 0.0167 6"
VCBB
1' 6"
0.14 Level 0
# 0071
130 ENC [ELEVATOR] (ELEVATOR)
130 CB [ELEVATOR]
0.480 3.87
3.87
3.01 0.0167 5"
VCBB
1' 6"
0.12 Level 0
# 0072
130 ENC [GRIND MIX AUGER] (GRIND MIX AUGER)
130 CB [GRIND MIX AUGER]
0.480 4.48
4.48
3.49 0.0167 6"
VCBB
1' 6"
0.14 Level 0
# 0073
130 ENC [MEAT INSPECT CNVRY] (MEAT INSPECTION CNVRY)
130 CB [MEAT INSPECT CNVRY]
0.480 9.22
9.22
7.37 0.0167 9"
VCBB
1' 6"
0.33 Level 0
# 0074
130 ENC [N. OPTI VACUUM PMP] (N. OPTI VACUUM PMP)
130 CB [N. OPTI VACUUM PMP]
0.480 2.09
2.09
1.61 0.0167 3"
VCBB
1' 6"
0.06 Level 0
# 0075
130 ENC [POLAR VAT DUMP] (POLAR MASSAGER VAT DUMP)
130 CB [POLAR VAT DUMP]
0.480 0.94
0.94
0.56 0.4384 10"
VCBB
1' 6"
0.48 Level 0
# 0076
130 ENC [S. CRYOVAC PMP #1] (S. CRYOVAC PMP #1)
130 CB [S. CRYOVAC PMP #1]
0.480 2.50
2.50
1.56 0.0365 5"
VCBB
1' 6"
0.12 Level 0
# 0077
130 ENC [S. CRYOVAC VAC PMP 2] (S. CRYOVAC VAC PMP 2)
130 CB [S. CRYOVAC VAC PMP 2]
0.480 1.68
1.68
1.03 1.653 2' 11"
VCBB
1' 6"
3.46 Level 1
# 0078
130 ENC [S. OPTI DUMPER] (S. OPTI DUMPER)
130 CB [S. OPTI DUMPER]
0.480 1.86
1.86
1.43 0.0172 3"
VCBB
1' 6"
0.05 Level 0
# 0079
130 ENC [S. OPTI VACUUM PMP] (S. OPTI VACUUM PMP)
130 CB [S. OPTI VACUUM PMP]
0.480 2.25
2.25
1.74 0.0167 4"
VCBB
1' 6"
0.06 Level 0
# 0080
130 PNL [BOILER RM PNL] (BOILER RM PNL)
130 CB [BOILER RM PNL]
0.480 20.40 19.10 15.67 0.0167 1' 3"
VCBB
1' 6"
0.84 Level 0
# 0081
130 PNL [FRONT OFFICE PNL] (FRONT OFFICE PNL)
130 FUSE [FRONT OFFICE PNL]
0.208 2.18
2.18
0.87
2 3'
VCBB
1' 6"
3.63 Level 1
# 0082
130 PNL [OFFICE LGTS PNL] (OFFICE LGTS PNL)
130 FUSE [OFFICE LGTS PNL]
0.208 2.35
2.35
0.81 0.539 1' 3"
VCBB
1' 6"
0.93 Level 0
# 0083
130 PNL [PANEL 2] (PANEL 2)
130 CB [PANEL 2]
0.480 27.38 25.39 20.60 0.0501 2' 8"
VCBB
1' 6"
3.46 Level 1
# 0084
130 PNL [PANEL 5] (PANEL 5)
130 CB [PANEL 5]
0.208 4.30
4.30
2.04 0.017 4"
VCBB
1' 6"
0.08 Level 0
# 0085
130 PNL [PANEL 6] (PANEL 6)
130 CB [PANEL 6]
0.208 4.30
4.30
2.04 0.017 4"
VCBB
1' 6"
0.08 Level 0
# 0086
130 PNL [PANEL 7] (PANEL 7)
130 FUSE [PANEL 7]
0.208 4.43
4.43
1.62 0.1651 11"
VCBB
1' 6"
0.58 Level 0
# 0087
140 DISC [LUNCH RM PNL DISC] (LUNCH RM PNL DISC)
140 CB [LUNCH RM XFMR]
0.208 3.43
3.43
1.61
2 4' 2"
VCBB
1' 6"
6.72 Level 2
# 0088
140 ENC [10000 MEPACO] (10000 MEPACO)
140 CB [10000 MEPACO]
0.480 8.40
8.40
6.69 0.0167 8"
VCBB
1' 6"
0.30 Level 0
# 0089
140 ENC [480 DOORS] (480 DOORS)
140 CB [480 DOORS]
0.480 0.94
0.94
0.56 0.4379 10"
VCBB
1' 6"
0.48 Level 0
# 0090
140 ENC [5 TON COLMAC] (5 TON COLMAC)
140 CB [5 TON COLMAC]
0.480 4.47
4.47
3.49 0.0167 6"
VCBB
1' 6"
0.14 Level 0
# 0091
140 ENC [AUGER TO MACERATOR] (AUGER TO MACERATOR)
140 CB [AUGER TO MACERATOR]
0.480 3.86
3.86
3.00 0.0167 5"
VCBB
1' 6"
0.12 Level 0
# 0092
140 ENC [BOOSTER PMP 8490] (BOOSTER PMP 8490)
140 CB [BOOSTER PMP 8490]
0.480 8.10
8.10
6.44 0.0167 8"
VCBB
1' 6"
0.28 Level 0
# 0093
140 ENC [BRINE CHILL INJECTOR] (BRINE CHILLER AT INJECTOR)
140 CB [LOG/BRINE/AUGER TAP]
0.480 0.94
0.94
0.56 0.4389 10"
VCBB
1' 6"
0.48 Level 0
# 0094
140 ENC [CAN PACK CNVYR] (CAN PACK CNVYR)
140 CB [CAN PACK CNVYR]
0.480 4.47
4.47
3.49 0.0167 6"
VCBB
1' 6"
0.14 Level 0
# 0095
140 ENC [CRYOVAC S. DUMP] (CRYOVAC S. DUMP)
140 CB [DUMP TAP]
0.480 1.17
1.17
0.70 0.0328 3"
VCBB
1' 6"
0.05 Level 0
# 0096
140 ENC [CRYOVAC S. SCRAP VAC] (CRYOVAC S. SCRAP VAC)
140 CB [CRYOVAC/DEMOLD]
0.480 0.71
0.71
0.42 0.7781 1'
VCBB
1' 6"
0.63 Level 0
# 0097
140 ENC [DEMOLD DELI CNVYR] (DEMOLD DELI INCLN CNVYR)
140 CB [CRYOVAC/DEMOLD]
0.480 4.46
4.46
3.47 0.0167 5"
VCBB
1' 6"
0.14 Level 0
# 0098
140 ENC [DEMOLD LOG CONVYR] (DEMOLD LOG RETURN CONVYR) 140 CB [LOG/BRINE/AUGER TAP]
0.480 3.86
3.86
3.00 0.0167 5"
VCBB
1' 6"
0.12 Level 0
# 0099
140 ENC [EMULSAFIER AUGER] (EMULSAFIER AUGER)
140 CB [LOG/BRINE/AUGER TAP]
0.480 5.27
5.27
4.13 0.0167 6"
VCBB
1' 6"
0.17 Level 0
# 0100
140 ENC [FAN ABOVE ELEV] (FAN ABOVE ELEV)
140 CB [TIPPER/FAN TAP]
0.480 4.46
4.46
3.47 0.0167 5"
VCBB
1' 6"
0.14 Level 0
# 0101
140 ENC [INJECTOR DUMPER] (INJECTOR DUMPER)
140 CB [INJECTOR DUMPER]
0.480 2.53
2.53
1.95 0.0167 4"
VCBB
1' 6"
0.07 Level 0
# 0102
140 ENC [LOG CONVEYOR 50] (LOG CONVEYOR 50)
140 CB [LOG/USDA TAP]
0.480 4.46
4.46
3.47 0.0167 5"
VCBB
1' 6"
0.14 Level 0
# 0103
140 ENC [LOG DEMOLD CONV] (LOG DEMOLD CONVEYOR)
140 CB [LOG DEMOLD CONV]
0.480 3.87
3.87
3.01 0.0167 5"
VCBB
1' 6"
0.12 Level 0
# 0104
140 ENC [MEAT INSP DUMP] (MEAT INSP DUMP)
140 CB [MEAT INSP DUMP]
0.480 4.47
4.47
3.49 0.0167 6"
VCBB
1' 6"
0.14 Level 0
# 0105
140 ENC [MEAT INSP TO DETECT] (MEAT INSP TO DETECTOR)
140 CB [AUGER TO MACERATOR]
0.480 3.86
3.86
3.00 0.0167 5"
VCBB
1' 6"
0.12 Level 0
# 0106
140 ENC [MEPACO 10000 DUMP] (MEPACO 10000 DUMP)
140 CB [MEPACO 10000 DUMP]
0.480 14.25 14.25 11.61 0.0167 1'
VCBB
1' 6"
0.55 Level 0
# 0107
140 ENC [OPTI HYD PMP CLIP] (OPTI HYD PMP PLY CLIP LINE)
140 CB [OPTI HYD PMP CLIP]
0.480 8.54
8.54
6.81 0.0167 8"
VCBB
1' 6"
0.30 Level 0
# 0108
140 ENC [PICKLE MASCERATOR] (PICKLE PMP MASCERATOR ENC) 140 CB [PICKLE/WEILER TAP]
0.480 1.40
1.40
1.08 0.0206 3"
VCBB
1' 6"
0.05 Level 0
# 0109
140 ENC [S. TIPPER TIE CONYR] (S. TIPPER TIE EXIT CONYR)
140 CB [TIPPER/FAN TAP]
0.480 4.46
4.46
3.47 0.0167 5"
VCBB
1' 6"
0.14 Level 0
# 0110
SITE NAME ARC FLASH STUDY
Page 12 of 77
INTERSTATES DATE
Table 2: Arc Flash Evaluation Report
Bus Name
Protective
Bus
Bus Prot Dev Prot Dev Trip/
Arc
Electrode
Working Incident
PPE Level
Label #
Device Name
kV Bolted Bolted Arcing Delay Flash Configuartion Distance Energy
Fault
Fault
Fault
Time Boundary
(cal/cm2)
(kA)
(kA)
(kA)
(sec.)
140 ENC [TUMBLER DUMP] (TUMBLER DUMP)
140 CB [DUMP TAP]
0.480 3.86
3.86
3.00 0.0167 5"
VCBB
1' 6"
0.12 Level 0
# 0111
140 ENC [USDA FIRST BELT] (USDA FIRST BELT)
140 CB [LOG/USDA TAP]
0.480 4.46
4.46
3.47 0.0167 5"
VCBB
1' 6"
0.14 Level 0
# 0112
140 ENC [WEILER AUGER FEED] (WEILER AUGER FEED)
140 CB [PICKLE/WEILER TAP]
0.480 3.86
3.86
3.00 0.0167 5"
VCBB
1' 6"
0.12 Level 0
# 0113
140 ENC [WOLFTEC INJECTOR] (WOLFTEC INJECTOR)
140 CB [WOLFTEC INJECTOR]
0.480 1.76
1.76
1.36 0.0175 3"
VCBB
1' 6"
0.05 Level 0
# 0114
140 PNL [LUNCH RM PNL] (LUNCH RM PNL)
140 FUSE [LUNCH RM PNL]
0.208 3.38
3.38
1.21 0.6961 1' 11"
VCBB
1' 6"
1.80 Level 1
# 0115
140 PNL [PANEL 3] (PANEL 3)
130 CB [PANEL 2]
0.480 27.07 25.18 20.44 0.0502 2' 8"
VCBB
1' 6"
3.43 Level 1
# 0116
140 PNL [UPSTAIRS LV PNL] (UPSTAIRS LV PNL)
140 FUSE [LUNCH RM PNL]
0.208 3.38
3.38
1.21 0.6961 1' 11"
VCBB
1' 6"
1.80 Level 1
# 0117
140 STR [PICKLE MAS STR] (PICKLE PMP MASCERATOR STR)
140 CB [PICKLE/WEILER TAP]
0.480 4.46
4.46
3.47 0.0167 5"
VCBB
1' 6"
0.14 Level 0
# 0118
140 STR [PICKLE PMP STR] (PICKLE PMP BRINE CHILLER STR)
140 CB [PICKLE PMP STR]
0.480 3.87
3.87
3.01 0.0167 5"
VCBB
1' 6"
0.12 Level 0
# 0119
140 VFD [PICKLE PMP VFD] (PICKLE PMP BRINE CHILLER VFD)
140 CB [PICKLE PMP STR]
0.480 3.58
3.58
2.78 0.0167 5"
VCBB
1' 6"
0.11 Level 0
# 0120
140 VFD [WEILER TAKEAWAY VFD] (WEILER AUGER TAKEAWAY VFD) 140 CB [WEILER TAP]
0.480 2.14
2.14
1.65 0.0167 3"
VCBB
1' 6"
0.06 Level 0
# 0121
SITE NAME ARC FLASH STUDY
Page 13 of 77
INTERSTATES DATE
Section 2: Results Short Circuit Results
The short circuit rating of equipment indicates how much fault current the equipment can safely be subjected to and still maintain proper operation. If the equipment is not rated properly for the available fault current, the equipment could fail during a fault causing equipment and facility damage, plant downtime, or injury. Table 3: Bus Evaluation Comprehensive Fault Report and Table 3A: Protective Device Evaluation Comprehensive Fault Report are given on the following pages and shows the comparison between equipment short circuit ratings, available fault current at that location.
SITE NAME ARC FLASH STUDY
Page 14 of 77
INTERSTATES DATE
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