Attachment 3 - 260573 OVERCURRENT PROTECTIVE DEVICE STUDY JAN17R.pdf

JUBA ELECTRICAL UPGRADE DEVELOPMENT July 13, 2020

JUBA SOUTH SUDAN Issued for Bid

OVERCURRENT PROTECTIVE DEVICE COORDINATION

STUDY SECTION 260573 - 1

SECTION 260573 - OVERCURRENT PROTECTIVE DEVICE COORDINATION STUDY

PART 1 - GENERAL

1.1 SUMMARY

A. This Section includes fault-current and overcurrent protective device coordination studies

(computer-based studies), setting of overcurrent protective devices, and provision of personal protective equipment based upon input from studies.

B. Purpose of coordination is to facilitate:

1. Identification of Amp Interrupting Capacity (AIC) to prevent equipment damage.

2. Identification of device-specific protection of personnel from arc flashing.

3. Improvement of system reliability and isolation of faults.

C. Related Sections include the following:

1. Section 260505 “Common Work Results for Electrical, Communications, and Electronic

Safety,” including lock-out/tag-out devices and other electrical safety accessories.

2. Division 23 and 26 Sections requiring personnel protection in accordance with NFPA 70E.

1.2 SUBMITTALS

A. Software Information and Data Files - General:

1. Provide technical data information describing for operating system, study software capabilities and features, applicable standards, operator interface, color graphics. Include associated third-party applications.

2. After final version of Study is performed and accepted, provide data files which contain all required information to reconstruct study and allow system modification in future when used with application software. This electronic file shall include all library type data such as that for circuit breaker curves used on this project, as well as data which represents all physical and electrical characteristics of power system that Contractor had to provide for complete and proper study. This data is likely only compatible with particular software application used to generate study.

B. Software Certificates: For coordination-study and fault-current-study computer software programs, certifying compliance with IEEE 399. For arc-flash study program, certifying compliance with IEEE 1584.

C. Qualification Data: Coordination-Study Specialist and Testing Agency.

D. Report Requirements – General:

1. Submit electronic version, and submit hard copy at project site that will be left for post

Facilities staff.

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2. Reports, diagrams, and in field equipment shall follow naming conventions and math at all locations.

3. All studies, reports, and associated diagrams shall be submitted to Contracting

Officer/COR prior to final review of electrical distribution equipment shop drawings, and prior to release of associated electrical equipment for manufacture.

a. If formal completion of study may cause delay in equipment manufacture, approval from Contracting Officer/COR may be obtained for preliminary submittal of sufficient study data to ensure that selection of device ratings and characteristics will be satisfactory. Formal final study will then be provided to verify preliminary findings.

4. Prior to submitting final versions of each report to Contracting Officer/COR, transmit these versions to Engineer of Record for their approval. Based on recommended system improvements in project design, and on submittal comments themselves from Engineer of

Record and from the Government reviewers, each report may require re-submittal; if so, final versions of those reports shall be corrected and resubmitted until it is approved by the

Engineer of Record.

E. Fault-Current Study Report:

F. Coordination Study Report:

1. Coordination-study input data, including completed computer program input data sheets.

2. Coordination-study report.

3. Equipment evaluation report.

4. Setting report.

G. Summary Report - Arc Flash Hazard Study: Results of Studies shall be summarized in final summary report.

1. Results of short circuit protective device coordination and arc flash hazard analysis studies shall be summarized in final report.

2. Submit five bound hardcopies of complete final report. Submit additional copies of short-circuit input and output data, where required, in PDF format on CD.

3. Report Content: Report shall include the following Sections:

a. Executive Summary

b. Description, purpose, basis, and scope of study.

c. Single line diagram: Include multi-color single-line diagram of electrical distribution system within scope of this project. Include hardcopy and PDF format diagram using ANSI C sheet size (432 mm x 558 mm (11” x 17”)). This single-line diagram shall include:

1) Transformer rating, voltage rating, impedance, and wiring connection.

2) Feeder cable phase, neutral, and ground sizes, length of cable, conductor materials, and conduit size and type.

3) Switchgear, switchboards, panelboards, MCC’s, fuses, circuit breakers, ATS’s, and switches continuous ratings

STUDY SECTION 260573 - 3

4) Protective relays with appropriate device numbers and current transformers

(CTs) and potential transformers (PTs) with associated ratios.

5) Busses and fault levels.

6) Detailed legend indicating device type identification and other significant details.

7) Identify all locations of Neutral-Ground bonds per Engineer of Record.

d. Tabulations of circuit breakers, fuse, and other protective device ratings verses calculated short circuit duties and commentary regarding it.

e. Protective device time versus current coordination curves, tabulations of relay and circuit breaker trip settings, fuse selection, and commentary regarding it.

f. Baseline isolation procedures for electrical and mechanical equipment.

g. Identify where baseline arc flash level cannot be achieved and identify alternative means of compliance; see paragraph on “Equipment with ARMS” in the Article on

ARC FLASH STUDY.

h. Fault current calculations including a definition of terms and guide for interpretation of computer printout.

i. Details of incident energy and flash protection boundary calculations.

j. Recommendations for system improvements. Identify anticipated benefits and risks for worker safety, life cycle cost, or improved operations associated with each recommendation.

k. Recommended sizes for power fuses and recommended settings for ground fault relays, and for all adjustable trip relays.

l. Provide arc flash labels in hard copy submittal. For large studies with more than

100 bus locations, submit copy of computer analysis software viewer program required to produce arc flash labels in electronic format.

m. Sample of each Hazard Label required by this Section.

1.3 QUALITY ASSURANCE

A. Studies shall use computer programs that are distributed nationally and are in wide use. Software algorithms shall comply with requirements of standards and guides specified in this Section.

Manual calculations are not acceptable.

B. Coordination-Study Specialist Qualifications: Organization experienced in application of computer software used for studies, having performed successful studies of similar magnitude on electrical distribution systems using similar devices.

C. Independent Testing Agency Qualifications: Testing agency that is member company of

InterNational Electrical Testing Association (NETA), and that is acceptable to Contracting

Officer/COR based upon input from OBO/PDCS/DE/EE.

1. Testing Agency's Field Supervisor: Person currently certified by NETA or the National

Institute for Certification in Engineering Technologies (NICET) to supervise on-site testing specified in this Section.

D. Comply with IEEE 399 for general study procedures.

E. Comply with IEEE 242 for short-circuit currents and coordination time intervals.

F. Comply with NFPA 70E “Standard for Electrical Safety in the Workplace.”

STUDY SECTION 260573 - 4

1.5 FAULT CURRENT STUDY

A. Source Impedance: As an infinite bus on primary side of utility transformer.

B. Analyze electrical distribution system from normal and alternate power sources throughout electrical distribution system for Project, using approved computer software program to calculate values.

1. Include studies of system-switching configurations and alternate operations that could result in maximum fault conditions.

C. Calculate momentary and interrupting duties on the basis of maximum available fault current.

D. Calculate interrupting ratings of overcurrent protective devices to verify compliance with the following:

1. Low-Voltage Circuit Breakers: IEEE 1015, IEEE C37.13, and IEEE C37.50.

2. Low-Voltage Fuses: IEEE C37.46.

E. Data Presentation: Enter calculated X/R ratios and interrupting (5-cycle) fault currents on electrical distribution system diagram of report. List other output values from computer analysis, including momentary (1/2-cycle), interrupting (5-cycle), and 30-cycle fault-current values for 3-phase, 2-phase, and phase-to-ground faults.

F. Equipment Evaluation: Analyze adequacy of overcurrent protective devices and conductors by comparing fault-current ratings of these devices with calculated fault-current momentary and interrupting duties.

1.6 COORDINATION STUDY

A. Gather and tabulate the following input data to support coordination study:

1. Product Data for overcurrent protective devices specified in other Division 26 Sections and involved in overcurrent protective device coordination studies. Use equipment designation tags that are consistent with electrical distribution system diagrams, overcurrent protective device submittals, input and output data, and recommended device settings. Examine overcurrent protective device construction submittals for compliance with electrical distribution system coordination requirements and other conditions affecting performance.

Devices to be coordinated are indicated on Construction Drawings.

2. Impedance of utility service entrance.

3. Electrical distribution system diagram showing the following:

a. Load current that is the basis for sizing continuous ratings of circuits for cables and equipment.

b. Circuit-breaker and fuse-current ratings and types.

c. Relays and associated power and current transformer ratings and ratios.

d. Transformer kilovolt amperes, primary and secondary voltages, connection type, impedance, and X/R ratios.

e. Generator kilovolt amperes, size, voltage, and source impedance.

STUDY SECTION 260573 - 5

f. Cables. Indicate conduit material, sizes of conductors, conductor insulation, and length.

g. Busway ampacity and impedance.

h. Motor horsepower and code letter designation according to NEMA MG 1.

4. Data sheets shall supplement electrical distribution system diagram, cross-referenced with tag numbers on diagram:

a. Special load considerations, including starting inrush currents and frequent starting and stopping.

b. Magnetic inrush current overload capabilities of transformers.

c. Motor full-load current, locked rotor current, service factor, starting time, type of start, and thermal-damage curve.

d. Ratings, types, and settings of utility company's overcurrent protective devices.

e. Special overcurrent protective device settings or types stipulated by utility company.

f. Time-current-characteristic curves of devices indicated to be coordinated.

g. Manufacturer, frame size, interrupting rating in amperes rms symmetrical, ampere or current sensor rating, long-time adjustment range, short-time adjustment range, and instantaneous adjustment range for circuit breakers.

h. Manufacturer and type, ampere-tap adjustment range, time-delay adjustment range, instantaneous attachment adjustment range, and current transformer ratio for overcurrent relays.

i. Panelboards, switchboards, motor-control center ampacity, and interrupting rating in amperes rms symmetrical.

5. Proceed with coordination study only after relevant equipment submittals have been assembled. Overcurrent protective devices not submitted for approval with coordination study may not be used in study.

B. Perform coordination study and prepare a written report using results of fault-current study and approved computer software program.

C. Study shall reflect compliance with the OBO Electrical Code (NFPA 700 “National Electrical

Code” as amended by OBO) for overcurrent protection of circuit elements and devices.

D. Study shall reflect compliance with IEEE 242 recommendations for fault currents and time intervals.

E. Transformer Primary Overcurrent Protective Devices:

1. Study shall reflect that devices do not operate in response to the following:

a. Self-cooled, full-load current or forced-air-cooled, full-load current, whichever is specified for that transformer.

b. Permissible transformer overloads according to IEEE C57.96 if required by unusual loading or emergency conditions.

c. Inrush current when first energized.

2. Study shall reflect that devices protect transformer according to IEEE C57.12.00, for fault currents.

STUDY SECTION 260573 - 6

F. Study shall reflect that motors served by voltages more than 600 V are protected according to

IEEE 620.

G. Conductor Protection: Study shall reflect that cables are protected against damage from fault currents according to ICEA P-32-382, ICEA P-45-482, and conductor melting curves in

IEEE 242. Verify adequacy of phase conductors at maximum three-phase bolted fault currents, equipment grounding conductors, and grounding electrode conductors at maximum ground-fault currents.

H. Coordination-Study Report: Prepare report indicating the following results of coordination study:

1. Tabular Format of Settings Selected for Overcurrent Protective Devices:

a. Device tag.

b. Relay-current transformer ratios; and tap, time-dial, and instantaneous-pickup values.

c. Circuit-breaker sensor rating; and long-time, short-time, and instantaneous settings.

d. Fuse-current rating and type.

e. Ground-fault relay-pickup and time-delay settings.

2. Coordination Curves: Prepare curves to determine settings of overcurrent protective devices to achieve selective coordination. Graphically illustrate that adequate time separation exists between series devices, including power utility company's upstream devices. Show the following specific information:

a. Device tag.

b. Voltage and current ratio for curves.

c. Three-phase and single-phase damage points for each transformer.

d. No damage, melting, and clearing curves for fuses.

e. Cable damage curves.

f. Transformer inrush points.

g. Maximum fault-current cutoff point.

3. Completed data sheets for setting of overcurrent protective devices.

1.7 ARC FLASH STUDY

A. General: Perform study to:

1. Determine potential arc flash incident energies, arc flash boundaries, shock hazard boundaries and proper personal protective equipment (PPE) on all major equipment in distribution system (i.e., transformers, switchgears, switchboard, motor control centers

(MCC), panelboards, automatic transfer switchers (ATS), uninterruptible power supplies

(UPS), and variable frequency devices (VFD)).

2. Calculations shall comply with NFPA-70E, and IEEE-1584.

STUDY SECTION 260573 - 7

a. Bolted short circuit calculations used in above standards shall comply with ANSI

C37.010, C37.13, C37.5, IEEE-141, and IEEE-399.

3. Purpose of study is to determine arc flash hazards in conformance with NFPA-70E, and to provide comprehensive software model of compound electrical distribution system, which provides ability to generate integral work permits and arc flash calculations in compliance with 2015 NFPA 70E Article 130.5 (B) for all equipment in compound.

B. Arc flash study shall determine results identified below for each system mode of operation.

Provide results in spreadsheet format for each mode and electrical system location to provide easy viewing and comparison. Worst-case arc flash energy levels shall be flagged, and spreadsheet comparison table shall be capable of providing its output directly to high quality vinyl label printers. Calculations shall, as a minimum, include comparison of both 100 percent and 85 percent arcing currents for low voltage equipment for each electrical system configuration or operating mode, indicating worst-case arc flash hazards. Spreadsheet results shall include:

1. Equipment name and voltage.

2. Upstream equipment device name and ANSI function (e.g., 51/50).

3. Equipment type (e.g., switchgear, MCC, Panel, VFD).

4. Equipment arc gap.

5. Bolted and estimated arcing fault current at fault point (equipment) in symmetrical amperes. Estimated arcing current shall be based on arcing current equations used.

6. Trip time, opening time, and total clearing time (total arc time) of protective device.

7. Worst-case arc flash boundary for each bus/equipment in model.

8. Worst-case arc flash hazard incident energy in cal/cm2 for each bus/equipment in model.

9. Worst-case personal protective equipment (PPE) for each bus/equipment in model.

10. Working distances for up to five different distances showing three worst-case scenarios above for each distance.

11. Indicate “Danger/Hazardous” areas where incident energy is greater than 40 cal/cm2, and provide recommendations to reduced arc flash energy levels for these areas.

12. Flag results where 85 percent arcing current provided worst-case results.

13. Provide maintenance mode arc flash reduction switch to provide dual parameter sets that enable trip unit to automatically lower instantaneous setting and thereby lower available energy in fault condition (commonly referred to as “maintenance mode”), making breaker trip faster while engaged in any form of maintenance while being in proximity to energized equipment to minimize arc flash dangers. Arc flash reduction maintenance switch shall reduce to below hazard identified in NFPA 70E hazard class ratings of 3 or greater

C. Modes of Operation: Describe in detail each mode of operation, indicating areas where incident energy calculations and PPE requirements are higher than calculated in normal operating mode.

D. Equipment with ARMS: For equipment with Arc Reduction Maintenance Switch (ARMS), arc flash study shall identify information required for both normal operating mode and ARMS mode.

1. ARMS mode shall reduce arc flash levels to accommodate safe worker operation and maintenance of 8 cal/cm2. If 8 cal/cm2 cannot be reached, steps to provide alternative means of compliance to achieve worker safety, when approved by the Contracting

OfficerCOR based upon input from OBO/PDCS/DE/EE electrical engineer, shall be identified. Candidate measures to achieve alternative means of compliance, used individually or in combination, include the following:

STUDY SECTION 260573 - 8

a. Additional isolation procedures beyond baseline procedures required for all major electrical and mechanical equipment.

b. Physical separation during testing and operations.

c. Remote operations and testing.

d. Additional safety accessories; see Section 260505 “Common Work Results for

Electrical, Communications, and Electronic Safety” for baseline accessories.

E. General Report Contents: Provide detailed arc flash analysis report including as minimum:

1. Introduction.

2. Methodology.

3. Information Sources.

4. Key Assumptions.

5. Arc flash energy and other consideration for various system modes of operation (e.g., maintenance mode, bus-tie).

6. Arc energy at 100 percent and reduced currents.

7. IEEE 1584-2002 Considerations.

8. Overcurrent protective device changes, replacements or setting changes implemented in study to reduce arc flash hazard exposure.

9. Explanation of data in arc flash hazard report tables.

10. NFPA 70E Information.

a. Shock hazards with covers removed.

b. Shock Hazard Approach Boundaries: Limited Approach Boundary, Restricted

Approach Boundary, and Prohibited Approach Boundary.

c. Arc Flash Hazard Boundaries.

11. Results of Arc flash Hazard Analysis for high voltage, medium voltage and low voltage systems, including:

a. Working distances.

b. Energy Levels.

c. PPE Requirements.

d. Recommendations to reduce arc flash hazard energy and exposure.

F. Study Support: Contractor shall provide support necessary to facilitate study.

1.8 OWNERSHIP OF PROPRIETARY MATERIAL

A. The Government shall retain all rights to software and passwords used for this project.

B. The Government will sign a copy of manufacturer’s standard software and firmware licensing agreement as condition of this contract. Such license shall grant use of all programs and application software to Government as defined by manufacturer’s license agreement, but shall protect manufacturer’s rights to disclosure of Trade Secrets contained within such software.

C. The licensing agreement shall not preclude use of software by individuals under contract to

Government for commissioning, servicing, or altering system in future. Use of software by individuals under contract to Government shall be restricted to use on Government’s computers, and only for purpose of commissioning, servicing, or altering installed system.

STUDY SECTION 260573 - 9

D. All project developed software, files and documentation shall be compatible and operable with

SKM software, and become property of Government. These include but are not limited to:

1. Single line diagram identifying buss and fault levels (pdf).

2. Server and Workstation software

3. Application Programming Tools

4. Application Files

5. Configuration Files

6. Graphic Files

7. Report Files

8. Graphic Symbol Libraries

9. All Documentation.

PART 2 - PRODUCTS

2.1 SOFTWARE FOR STUDY

A. Available Computer Software Vendors: Subject to compliance with requirements, companies offering computer software programs that may be used in the Work include, but are not limited to, the following:

1. CYME International, Inc.

2. EDSA Micro Corporation.

3. Electrical Systems Analysis, Inc.

4. SKM Systems Analysis, Inc.

B. Provide software in native file format, along with version updates available at project closeout.

C. Software shall facilitate conformance with IEEE 399, IEEE 1584, and NFPA 70E.

D. Analytical features of fault-current-study computer software program shall include "mandatory,"

"very desirable," and "desirable" features as listed in IEEE 399, Table 7-4.

E. Software program shall be capable of plotting and diagramming time-current-characteristic curves as part of its output. Computer software program shall report device settings and ratings of all overcurrent protective devices.

1. Additional Reporting Capabilities:

a. Arcing faults.

b. Simultaneous faults.

c. Explicit negative sequence.

d. Mutual coupling in zero sequence.

F. Arc Flash Study Software:

1. General: Software shall provide complete integration of one-line, database, short circuit, PDC and Arc flash functions. Software using separate short circuit, PDC, TCC or arc flash programs is not permitted. Spreadsheet calculations are not permitted. Include program arc flash hazard calculations with necessary features to eliminate errors in arc flash

STUDY SECTION 260573 - 10

calculations. Detailed software model shall be established for site electrical distribution system which documents site compliance with the OSHA and NFPA 70E requirements.

This model will serve as an integral part of site ongoing safety program by providing ability to prepare integral work permits and arc flash calculations in compliance with NFPA-70E

Article 130.1(A)(2) for each electrical equipment on compound.

2. Software shall perform arc flash calculations with enhanced IEEE-1584 equations, which eliminate voltage discontinuities and non-conservative/average results of standard equations. This will ensure that calculated incident energies are closer to actual test results insuring conservative calculation minimizing personnel risk.

3. Software shall perform arc flash calculations on fastest clearing upstream protective device protecting equipment for single sources and slowest upstream protective device for multiple sources. Calculations shall automatically compare all series and parallel upstream protective devices in system to determine the fastest series device or conservative parallel clearing time. Algorithm shall incorporate traversing routine that can search back unlimited number of buses/nodes and consider all series and parallel branches in comparison to ensure accurate answers and to prevent hazards associated with incorrect results. Software shall not have trace back limits (5-10 buses) that can provide incorrect answers for low voltage faults that require high voltage protective device clearing to prevent potential errors.

4. Software shall display arc flash calculations including arc flash boundary, incident energy, PPE requirements, and working distance on one-line diagram and TCC simultaneously.

Software shall show visually the arc flash values as settings are incrementally changed

(dragging curves) so protection can be optimized, allowing protection engineer to visually balance competing objectives of personnel protection with that of system selectivity.

5. Software shall include four calculation options for arc flash calculations to ensure that software provides flexibility required to meet any system configuration or training requirement that may be considered. Each calculation option shall comply with graphic and spreadsheet display requirements of this section. These options are as follows:

a. Option 1: Detailed option shall provide let-through energy for each protective device in system or on selected equipment. This is energy on load side of protective device. Equipment shall be highlighted when let-through energy exceeds user defined threshold-clothing limit.

b. Option 2: Worst-case including main protective device. This option shall provide worst-case arc-hazard energy for equipment based on let-through energy of equipment’s main protective device. If equipment is not equipped with main device, program shall traverse back entire system to determine fastest series upstream protective device. Equipment shall be highlighted when let-through energy exceeds user defined threshold-clothing limit.

c. Option 3: Worst-case excluding main protective device. This option shall provide worst-case arc-hazard energy for equipment based on let-through energy of fastest upstream series protective device in system. Program shall traverse back entire system to determine fastest upstream protective device. The equipment shall be highlighted when let-through energy exceeds user defined threshold-clothing limit.

d. Option 4: Worst-case excluding and including main protective device. This is a combination of Options 2 and 3.

STUDY SECTION 260573 - 11

6. Software shall produce arc flash calculations that provide integral “Work Tasks” for listed equipment types. Tasks shall be derived from 70E Table 130.7(C)(9)(a), and be specific to equipment type. Work tasks shall be user definable in software to allow customization and integral with “Work Permit” feature of software. Listed equipment types shall include:

a. Switchgear, Switchboards, Panelboards, MCC, VFD, UPS, ATS, Interrupting

Switch, NEMA E2 Contactor, Conductor, Open Air for 100-200 volt equipment.

b. Switchgear, Switchboards, Panelboards, MCC, VFD, UPS, ATS, Interrupting

Switch, NEMA E2 Contactor, Conductor, Open Air for 200-1000 volt equipment.

c. Switchgear, MCC, VFD, UPS, ATS, Interrupting Switch, NEMA E2 Contactor, Conductor, Open Air for 1.0-5.0 kV equipment.

d. Switchgear, MCC, VFD, ATS, Interrupting Switch, NEMA E2 Contactor, Conductor, Open Air for 5.0-15.0 kV equipment.

e. Switchgear, Interrupting Switch, Conductor, Open Air for 15.0-38.0 kV equipment.

f. Interrupting Switch, Conductor, and Open Air for 38.0-1500 kV equipment.

7. Work Tasks shall have user-defined library that provides the following customizable features for each work task:

a. Work Tasks for each specific equipment type and voltage range.

b. Working distance units English or Metric.

c. Work distance for each task.

d. V-rated gloves and tool requirements.

e. Job description and procedures.

f. Safe work practices description.

g. Hazard Risk Category (HRC) reduction. HRC reduction shall only be used based on documented risk assessment as integral part of safety program.

8. Software shall permit preparation of work tasks that are accessible from one-line diagram for any equipment through mouse click on equipment in electrical system model one-line.

Dialog box shall appear listing all 70E and user definable work tasks for specific equipment selected. Work task dialog shall include user definable working distance for each work task and allow user to select tasks specific to any equipment feeder or incoming main.

Work tasks for each equipment type shall be voltage specific and user definable in library.

These requirements integrate 70E work tasks to one-line diagram for specific equipment types, providing basis for customized safety program and work permit process compliant with 70E mandates. Detailed requirements for “work task” software is necessary to ensure that any variation of equipment type, equipment layout, or work procedure can be handled and documented in software.

a. Software interface shall allow user to select any breaker fuse or switch on one-line, and get specific work task generated for that device showing load side arc flash hazard (let-through energy) for that device. The purpose of this requirement is to detail specific feeder hazards when work tasks dictate working downstream from feeder protective device.

b. Software shall produce integral work permits from arc flash calculations to comply with NFPA-70E, 2004 Article 130.1 (A). Work permits shall be integral with system one-line diagram and arc flash calculations, and shall detect and account for work between feeder and main breaker.

STUDY SECTION 260573 - 12

9. Software shall allow work permits to be activated by mouse click for all equipment types listed in F5. Work permits shall have the following calculated values and provide the following information specific to “work task” and equipment selected:

a. Shock hazard.

b. Shock hazard boundaries.

c. Arc flash boundary – worst-case for each equipment.

d. Arc flash hazard incident energy in cal/cm2 for the equipment.

e. Hazard Risk Category (HRC) and any applicable risk reduction.

f. Required PPE category based on calculated energy level and optional risk reduction.

g. Required PPE description based on PPE category.

h. Determination of V-rated gloves and tools.

i. Auto fill job description and procedures for each work task.

j. Auto fill safe work practices description for each work task.

k. Job briefing and planning check list.

l. Approval sign off section.

m. Working distance measurements in English or Metric units.

n. Required work distance for each task.

o. Documentation for safety program in compliance with 70E 130.1(A).

10. Software shall create work permits in MS Word, and have the following user customizable features:

a. Work Tasks for each specific equipment type and voltage range.

b. Restricted shock boundary.

c. Arc flash boundary – worst-case for each equipment.

d. Arc flash hazard incident energy in cal/cm2 for the equipment.

e. Hazard Risk Category (HRC) reduction for low risk tasks.

f. Required PPE category based on risk reduction.

g. Working distance in English or Metric units.

h. Working distance for each task.

i. V-rated gloves and tool requirements.

j. Flame Resistant clothing requirements.

k. Job description and procedures for each work task.

l. Safe work practices description for each work task.

m. Job briefing and planning check list.

n. Approval sign off section.

11. Power system software shall allow created work permits to be linked via MS Windows

“hyperlinks” to each equipment on one-line diagram. This will facilitate developing data repository of work permits performed on each equipment for 70E review, as well as providing one-stop location where documents pertaining to equipment can be accessed by maintenance and job planning.

12. Power system software shall be fully compatible with facility arc flash hazard and electrical safety implementation software that provides the following capabilities:

a. Calculates shock hazards, shock hazard boundaries, arc flash boundaries, incident energies, PPE requirements, and similar analyses for power systems modeled in

EasyPower or EasyPower EasySolv or approved equal.

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b. Built in Work Permit Feature for creation of custom Energized Work Permits complying with the NFPA-70E requirements. Work permit feature shall include

NFPA risk assessment categories based on task performed for all types of electrical equipment and voltage ranges. Work permit feature shall include extensive library of user definable work tasks, safety procedures and safe work practices.

c. Energized work permits, safety procedures, equipment instruction manuals, and similar items produced by software shall be capable of being directly linked to equipment one-line through Hyperlinks feature, providing one-stop data repository easily accessible to all plant and safety personnel, saving plant personnel and contractors significant productive time in locating applicable instruction manual, equipment safety procedure, drawing, pictures and maps for equipment. This feature will assist compliance with OSHA and NFPA 70E record keeping requirements.

d. Additional equipment information and records such as Maintenance Records, Maintenance Manuals, Operations Manuals, Lock out / Tag out procedures shall also be capable of being Hyperlinked to equipment on graphical one-line.

e. Program shall support creation of arc flash labels with direct output to high quality

UV resistant vinyl label printers.

f. Program shall also have customizable output, allowing one-line printing, text report creation, export to AutoCAD, and similar operations.

g. Program shall be a MS Windows-based operating system and shall use MS Windows conventions.

h. Program shall be capable of being installed on stand alone personal computers or on networked systems, and shall be compatible with all systems operating on MS

Windows 2000 or later operating systems.

i. Program shall be easily operable by site Facility staff without any specialized training.

PART 3 - EXECUTION

3.1 OVERCURRENT PROTECTIVE DEVICE SETTING

A. Manufacturer's Field Service: Engage factory-authorized service representative, of electrical distribution equipment being set and adjusted, to set overcurrent protective devices within equipment. If study recommends different type of devices or equipment, provide it at no additional cost to Government.

B. Testing: Engage qualified testing agency to perform the following device setting and to prepare test reports.

3.2 ARC FLASH HAZARD WARNING LABELS

A. Required Label Information: Electrical equipment such as switchboards, panelboards, industrial control panels, meter socket enclosures, and motor control centers that are in other than dwelling units, and that are likely to require examination, adjustment, servicing, or maintenance while energized, shall be field-marked with label containing all of the following information:

1. Nominal System Voltage

2. Arc Flash Boundry

3. Available incident energy and the corresponding working distance

STUDY SECTION 260573 - 14

4. Shock hazard boundries, Limited and Restricted Approach

5. Arc Flash PPE for calculated incident energy

6. Insulated glove class

7. Date of Study

B. Switches with ARMS Capability: Provide two labels for switches with Arc Reduction

Maintenance Switch (ARMS) mode capability; provide one label for normal operating mode, and second for ARMS mode.

C. Placement: Place shock and arc flash hazard warning labels, prepared using software, to switchgear as determined in arc flash study. Refer to Attachment A to this Section for example of label.

D. Label Types: Refer to Attachments A-C at the end of this Section for illustration of label types that shall be used for applicable warning conditions.

3.3 ARC FLASH TRAINING

A. Provide training by qualified specialist who also understands specific Arc Flash Hazard Analysis for this site. Training shall be for site qualified electrical Post Facilities personnel.

B. Training session shall address:

1. Potential arc flash hazards associated with working on energized equipment.

2. Proper use of system analysis data.

3. Interpretation of hazard labels.

4. Selection, and utilization of personal protective equipment.

5. Baseline isolation procedures for electrical and mechanical equipment.

6. Alternative means of compliance for worker safety where implemented for specific equipment; refer to the paragraph on “Equipment with ARMS” in the Article on ARC

FLASH STUDY.

7. Preparation of Energized Work Permits.

C. Session shall be four hours minimum duration, with trainees using (at applicable portions of session) proper Personal Protective Equipment (PPE) provided by Contractor.

D. Training shall be certified for continuing education units (CEUs) by International Association for

Continuing Education Training (IACET) or equivalent.

E. Coordinate with training for lock-out/tag-out devices and safety accessories in Section 260505

“Common Work Results for Electrical, Communications, and Electronic Safety.”

STUDY SECTION 260573 - 15

ATTACHMENT A

EXAMPLE OF BASIC ARC FLASH WARNING LABEL

STUDY SECTION 260573 - 16

ATTACHMENT B

EXAMPLE OF SHOCK HAZARD WARNING LABEL

STUDY SECTION 260573 - 17

ATTACHMENT C

EXAMPLE OF BASIC ARC FLASH ARMS LABEL

END OF SECTION 260573