Solicitation Exhibits A-B Arc Flash Electrical Repair W912DR21Q0073.pdf

Solicitation Exhibits A & B Arc Flash Electrical Repair W912DR21Q0073

USACE Raystown Lake Project

Legend

!( Project Gates

Project Roads

Project Boundary 0 1,000 2,000 3,000 4,000 5,000 Feet

U.S. Army Corps of Engineers Raystown Lake Project

Administration Building

Water Intake

Valley Well House

Lighthouse Concession

Transformer PoleApproximate location for new equipment rack

Approximate location of Well House

Approx. location of pull box

Attachment #3 Well House Site Plan

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Attachment #4 Existing One-Line Diagram

100A 3 Phase Roll up Generator Tap Box

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14.4 kV

3-10 kVA

480V

3#2 - 2"C

3P/100A

100AF

Power Co Transformer

480V 3P/1 ODA Heavy duty ,----+-----, Man�al Transfer Switch

3#2, 1#8G - NEMA 4X Wireway

3#8, 1#8G -11/ 2" C 2#8, 1#8G - 11/2" C 2#12, 1#12G - 3/4" C

3#2, 1#8G - NEMA 4X Wireway ml Im

2P/30A

30AF

5AF

10HP 480V Combination Starters

Complete With Red-Green- Blue- Amber Stop-Run-Overload- Fault indicating lights and Control Transformer. Control transformer provides control for the pump run relays from the Water Treatment Plant

2kVA 480V-120V

Above grade NEMA 4X Junction box.

Intercept existing underground control conductors and transition to the junction box. Splice existing to new control conductors.

Above grade NEMA 4X Junction box.

Dry Type Transformer

12, 1#12G - 3/4"C L....D.......J

20A 120V GFCI Duplex Receptacle in a Weatherproof Lockable Enclosure

1--------------Power conductors to Pump Station pumps and lighting panel.

Intercept existing underground power conductors near the existing underground pull box and transition to an above ground NEMA 4X junction box. Splice existing to new power conductors.

.-,,,,:;;.... ____________ _,.control conductors to water treatment plant.

New One-Line Diagram for Well House Notes:

1. All junction box, switch, and starter enclosures shall be NEMA 4X rated. All other devices shall be weatherproof.

2. Below grade conduits shall be schedule 80PVC. All above grade conduits shall be rigid galvanized steel.

3. Provide a grounding electrode system and grounding per the National Electrical Code.

ATTACHMENT#5

Line

Attachment #6

Provide a similar equipment rack for the Well House starters and disconnect switch. Seal-offs are not required . Provide a 6” deep compacted gravel bed 4’ all around the equipment rack.

Provide above grade NEMA 4X junction boxes as noted.

Junction boxes to be mounted 18" above grade on two 1” galvanized rigid steel conduits embedded in concrete a minimum 30” deep and 2" all around similar to this photo.

Attachment #7 Lighthouse Concession Site Plan

Power Company Transformers

Concession Comfort Station

Note 1

Note 7 �

NOTES:

1 . Approximate location of existing power company transformers.

2. Location of existing disconnect switches and MDP-2. Remove all electrical equipment noted in Attachment #10. Relocate circuits to new panel in storage room. Provide a new junction boxes, wiring and conduit as necessary to transfer circuits to the new panel.

3. Intercept existing 3 phase service conduit and provide a new wall mounted junction.

Connect new service conductors to existing and extend in conduit to new fused disconnect switch in storage room. Provide a new junction boxes, wiring and conduit as necessary to extend service conductors to the new panel.

4. Location of existing disconnect switch and MDP-1. Replace panel MDP-1 in place.

Reconnect all circuit to the new panel. Existing circuit from loadcenter noted in Attachment #9 to be incorporated in the new panel.Provide new junction boxes, wiring and conduit as necessary to transfer circuits to the new panel.

5. New 400A 3P fused disconnect switch and 240V/120V 3 phase 400A panelboard. Label high leg per NEC.

6. Location of existing comfort station water heater disconnect switch and panelboard.

Replace the existing panelboard with a new circuit breaker panelboard. Disconnect switches to remain. Provide new junction boxes, wiring, and conduit as requred to reconnect existing circuits to the new panelboard.

7. Existing underground service conductors. Contractor provide an insulation resistance test and provide results to the contracting officer.

8. Provide a new 2000CFM roof mounted exhaust fan. Provide new exhaust grills in the ceiling of the food preparation and dish washing rooms ducted to the exhaust fan.

Provide electrical circuit and variable speed controls.

Note 2

-----1+-- Note 8

COMFORT STATION AND CONCESSION STAND

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SHOWER COMFORT STATION

SERVICE WIREWAY

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CReconnect existing branch circuits.

12172 "LIGHTHOUSE" COMFORT STATION

oVREC '09004573

DS-MAIN1

New MDP-1 120/240V, 225A, 1PH,3W

Existing circuits and equipment to remain.

Replace the existing MDP-1 with a new 120/240V 225A panel in existing location.

Reconnect existing circuits. Combine the circuits from the existing loadcenter into the new panel.

A f-------31N

,.-,.�� I� WN37.5 kVA & 25 kVA ==== ====

120/240V OPEN DELTA �

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4#500kCMIL, 1#0G - 4" C

4#500kCMIL, 1#0G - 4" C

Intercept existing conduit and conductors on -----the exterior wall. Provide a new NEMA 4X junction box. Extend 4#500kCMIL conductors in rigid steel conduit on the exterior of the wall to the new 400A switch in the storage room.

Located in storage room. Provide new grounding electrode system per NEC.

New MDP-2 400A 3 Phase 4 Wire 120/240V High Leg Provide Circuit Breakers as necessary to transfer existing loads to new panel.

Provide junctions boxes and conduits as needed to extend existing circuits. Exisitng panel box may be reused as a junction box.

Provide a new blank cover.

18524 "LIGHTHOUSE" CONCESSION STAND

Revised One-Line Diagrams

Attachment #10

Note: Contractor shall insure that the existing grounding systems meets the minimum requirement s of the National

Electrical Code and correct any deficiencies.

4 5

Attachment #11

Concession Photographs

0 5

Notes: .

Attachment 12

Administration Building

10 15

Approximate Scale

1. Existing circuit breaker ponelboord to be replaced. Panelboard has a 150A 3P Main CB, 32ea - 1P 20A CBs, 42 - Total Spaces.

2. Existing main fused disconnect switch to remain. Provide new grounding that meets the latest edition of the Notional Electrical Code.

3. Existing generator top box to remain. Reconductor the connection to the existing manual transfer switch as required to move the transfer switch to the right enough to allow the door to open 90deg.

4. Existing mechanical loads fused disconnect switch to remain. Reconductor the connection to the existing manual transfer switch as required to move the transfer switch.

5. Existing manual transfer switch to be reused. Relocate to the right as for as necessary to allow the transfer switch door to be opened ninety degrees. Reconductor connections as necessary to accommodate the move. Redrill conduit hole in the transfer switch to generator tap box to accommodate the relocation of the switch and provide a repair plug for the existing hole.

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@ EXISTING ONE-LINE DIAGRAM

DRAWING Notes:

PHASE

NEUTRAL-·-·-----·

GROUND ·························

1. 400A/ 400F MAIN DISC SW

2. 400A/250F DISC SW

3. 400A MANUAL TRANSFER SW

4. PANEL A

5. SERVICE CONDUCTORS 2 SETS 3#3/0 AL

6. 2#500kCMIL, 2#3/0 NEUT CU

7. 2#3/0 NEUT

ATTACHMENT #13

8. 2#500kCMIL

9. 3#2/0 cu

10. 3#350kCMIL, 1#1/ CU

11. #1/0 BARE CU

12. 2#500kCMIL, 1 #1 /0 NEUT, 1 #1 /0G, #6 BARE CU

13. WIREWAY

14. 400A CAMLOC GENERATOR TAP BOX

15. GENERATOR 1 #1 /0G, #6 BARE CU

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ELECTRODE

CONDUCTOR

Notes:

NEW WORK ADMIN BLDG

ATTACHMENT /114

1. REPLACE EXISTING PANEL A TO MATCH EXISTING.

2. EXISTING 400A MAIN DISCONECT SWITCHES TO REMAIN.

·7

INSULATED NEUTRAL

BUS

3. CONTRACTOR SHALL ESTABLISH A NEW NEC COMPLIANT GROUNDING SYSTEM AS FOLLOWS:

3.1. INSTALL 2 NEW 8' LONG i" GROUND RODS ON THE EXTERIOR.

3.2. INSTALL NEW NEUTRAL AND GROUNDING BUS IN THE MAIN DISCONNECT SWITCH AND

CONNECT TO NEW GROUND RODS WITH MINIMUM # 1 /0 CU IN UNDERGROUND PVC CONDUIT.

3.3. CONNECT A /11 /0 CU IN PVC CONDUIT TO MAIN WATER SERVICE.

3.4. IN GENERAL INSURE THAT EXISTING METAL CONDUITS BEING USED AS AN EQUIPMENT

GROUNDING CONDUCTORS HAVE GROUNDING BUSHINGS WITH NEC SIZED BONDING JUMPERS

AT EACH TERMINATION.

4. PROVIDE NEUTRAL CONNECTION BETWEEN THE SERVICE NEUTRAL AND GENERATOR NEUTRAL

WITHIN THE TRANSFER SWITCH WITH INSULATED NEUTRAL BUS. NEUTRAL SHALL ONLY BE

GROUNDED AT THE MAIN DISCONNECT SWITCH. REMOVE OTHER GROUNDED NEUTRAL LOCATIONS.

NEUTRALS FOR PANEL A AND EQUIPMENT DISCONNECT SWITCH SHALL BE CONNECTED IN THE

TRANSFER SWITCH.

Attachment #15 Administration Building Photographs Existing Main Disconnect Switch and Circuit Breaker Panelboard

Generator Tap Box

Mechl Equip Disc Sw

6 7

Aministration Building Photographs Attachment #16

Transfer Sw

Attachment1

Attachment2

Attachment3

Attachment4

Attachment 5

Attachment 6

Attachment7

Atttachment 8

Attachment 9

Attachment 10

Attachment 11

Attachment 12

Atttachment 13

Atttachment 14

Atttachment 15

Atttachment 16

W912DR-16-D-0007

Arc Flash Hazard Program

Site Evaluations – Phase 2

Site 1 – Raystown Lake

US ARMY CORPS OF ENGINEERS

BALTIMORE DISTRICT

Final Report – Revision 1

February 23, 2017

2020 K Street NW, Suite 300

Washington, DC 20006

AECOM Project Number: 60520825

US Army Corps of Engineers – Baltimore District February 23, 2017

TABLE OF CONTENTS

1.0 PROJECT OVERVIEW

2.0 FIELD INVESTIGATION

2.1 SUMMARY OF FINDINGS

2.2 CODE VIOLATIONS AND RECOMMENDED CORRECTIVE ACTION

2.3 SAFETY CONCERNS

3.0 CALCULATIONS

3.1 INTRODUCTION

3.2 ASSUMPTIONS

3.3 SHORT CIRCUIT ANALYSIS

3.4 OVERCURRENT PROTECTION COORDINATION STUDY

3.5 ARC FLASH ANALYSIS

APPENDICIES

APPENDIX A – AS-BUILT SINGLE LINE DIAGRAM

APPENDIX B – ETAP SINGLE LINE DIAGRAM

APPENDIX C – SHORT CIRCUIT ANALYSIS WITH UTILITY POWER

APPENDIX D – SHORT CIRCUIT ANALYSIS WITH GENERATOR POWER

APPENDIX E – OVERCURRENT PROTECTION COORDINATION STUDY

APPENDIX F – ARC FLASH ANALYSIS REPORT WITH UTILITY POWER

APPENDIX G – ARC FLASH ANALYSIS REPORT WITH GENERATOR POWER

APPENDIX H – ARC FLASH LABELS BASED ON WORST CASE SCENARIO

US Army Corps of Engineers – Baltimore District February 23, 2017

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US Army Corps of Engineers – Baltimore District February 23, 2017

1.0 PROJECT OVERVIEW

In order to establish a consistent policy for the safe and reliable control of arc flash hazards at US Army

Corps of Engineers (USACE) facilities, Engineering Regulation 385-1-100 has been developed. To comply with this Regulation, USACE has contracted AECOM to perform arc flash hazard analyses at (10) ten locations under the jurisdiction of the Baltimore District.

AECOM is tasked with performing a field investigation to determine existing site conditions, deficiencies, and safety concerns. In addition, AECOM will use the information compiled during the field investigation to perform arc flash hazard analyses with the aim of developing arc flash hazard labels that infer the level of safety risk associated with facility electrical equipment.

This report details the findings of the field investigation as well the methodology and results of the arc flash analysis. It also provides templates for the arc flash labels to be field applied under a future contract option or by government personnel.

This report is specific to project site #1.

Site Name: Raystown Lake

Site Location: 6145 Seven Points Road, Hesston, PA 16647

Point of Contact:

Nicholas Krupa

Nicholas.E.Krupa@usace.army.mil

US Army Corps of Engineers – Baltimore District February 23, 2017

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US Army Corps of Engineers – Baltimore District February 23, 2017

2.0 FIELD INVESTIGATION

2.1 SUMMARY OF FINDINGS

The Raystown Lake site is fed from multiple utility services. Every major building or facility has its own service entrance from the utility. The smaller facilities typically have a single phase, 120/240V system and the larger, or more power demanding, facilities typically have a three-phase, 480/277V system.

There are also some facilities with open-delta, 3-phase power.

Equipment analyzed throughout this report is identified by a unique nomenclature. The first four of five digit number corresponds to the building identifier codes from the project's real property listing. This is followed by a brief description of the subcomponent when necessary. A table cross referencing building identifier codes with their common description is listed in Table 1 below. For facilities that did not have a facility number, the four digit number from the address was used.

Table 1 Summary of Facilities and Incoming Power

Facility Number Meter Addresses Facility Transformer Service Type

12230 6145 Seven Points Rd Administration Building 75 kVA pad 120/240V, 3-Wire

Meter Address Used 6256 Seven Points Rd

(2 meters)

Seven Points Entrance Station &

Attendant Campsite

10 kVA pad 120/240V, 3-Wire

Meter Address Used 6259 Seven Points Rd Maintenance Reservoir Pump

Station

(2) 10 kVA pad 480V, Open-Delta

12232 6269 Seven Points Rd Maintenance Bldg #3

(Emergency Operations)

12222 6271 Seven Points Rd Maintenance Bldg #1

(Shop/Office)

75 kVA pad 480/277V, 3-Wire

12221

6273 Seven Points Rd &

6275 Seven Points Rd

Maintenance Bldg #2

(Pole Barn) &

Maintenance Bldg #4

(Friends)

15 kVA pole 120/240V, 3-Wire

NA

6270 Seven Points Rd Maintenance Building 5

(Equipment Storage)

10 kVA 120/240V, 3-Wire

12163

6737 Seven Points Rd

(4 meters)

Ridge Campground

• Shower Comfort Station

• RV Distribution Boards

75 kVA pad

(3) 37.5 kVA pad

480/277V & 4-Wire

120/240V, 3-Wire

12148 6764 Seven Points Rd Water Treatment Plant 75 kVA pad 480Y/277V, 4-Wire

12164

6817 Seven Points Rd

(5 meters)

Meadow Campground

• Comfort Station

• Pavilion

(4) 25 kVA pad

50 kVA pad

Meter Address Used 6818 Seven Points Rd Volunteer Village Campground 50 kVA pad 120/240V, 3-Wire

18523 6933 Seven Points Rd Visitor Center Amphitheater 150 kVA pad 120/240V, 3-Wire

16543 6993 Seven Points Rd Visitor Center/Ranger Station 300 kVA pad 480Y/277V, 4-Wire

Highlight

US Army Corps of Engineers – Baltimore District February 23, 2017

12178 & 13014

7053 Seven Points Rd

Pine Picnic Area

• Pine Pavilion

• Pine Comfort Station

12170 7336 Seven Points Rd Mushroom Comfort Station 10 kVA pad 120/240V, 3-Wire

12173 7363 Seven Points Rd Oak Comfort Station 15 kVA pad 120/240V, 3-Wire

12209 7416 Seven Points Rd Oak Pavilion 10 kVA pad 120/240V, 3-Wire

12088 7448 Seven Points Rd Beach Sewage Lift Station (2) 10 kVA pad 480V, Open-Delta

12174 & 12175

7635 Seven Points Rd &

7683 Seven Points Rd

Bay Boat Launch Comfort Station

#1 & Comfort Station #2

10 kVA pole

10 kVA pole

12075 7836 Seven Points Rd Wastewater Treatment Plant 75 kVA pad 480Y/277V, 4-Wire

12176 7929 Seven Points Rd Bay Campground Comfort

Station & RV Distribution Board

37.5 kVA pad 120/240V, 3-Wire

12162 & 12179 13876 Point Camp Rd Valley Campground Well House

& Lake Pump Station

(3) 10 kVA pole 480Y/277V, 4-Wire

12072 14003 Point Camp Rd Valley Campground Sewage Lift

(3) 25 kVA pole 208Y/120V, 4-Wire

18525

14004 Point Camp Rd

Valley Campground

50 kVA pole

50 kVA pole

18530

14156 Point Camp Rd

(4 meters)

Point Campground

(3) 37.5 kVA pole

(2) 37.5 kVA pad

208Y/120V, 4-Wire

18526 & 18527 13995 Howard Miller

Rd

Howard Miller Picnic Area

Dogwood and Redbud Pavilions

12169 14079 Howard Miller

Howard Miller Picnic Area

18524 & 12172

14201 Beach Rd

(3 meters)

“Lighthouse” Shower Comfort

Station and Concession Stand

75 kVA pad

37.5 kVA pad

25 kVA pad

480Y/277V, 4-Wire

240/120V, 4-Wire, Open-

Delta

12171 14215 Beach Rd Laurel Comfort Station 10 kVA pad 120/240V, 3-Wire

12177 14232 Beach Rd Allegheny Pavilion 10 kVA pad 120/240V, 3-Wire

Meter Address Used 6009 Senoia Camp Rd Senoia Boat House 15 kVA pad 120/240V, 3-Wire

18529

6106 Senoia Camp Rd

(3 meters)

Senoia I Campground

150 kVA pad

208Y/120V, 4-Wire

18528 6287 Senoia Camp Rd

Senoia II Campground

US Army Corps of Engineers – Baltimore District February 23, 2017

12229 & 12157 12142 Raystown Dam

Dam Maintenance Building &

Pagoda Comfort Station

37.5 kVA pad 120/240V, 3-Wire

12069 & 12070 12197 Raystown Dam

Dam Spillway and Tower 225 kVA pad 480Y/277V, 4-Wire

12155 & 18502

13249 Point Rd Corbin’s Island Picnic Area

10 kVA pole 120/240V, 3-Wire

12160 12136 Snyder’s Run Rd Snyder’s Run Boat Launch

18531 & 10281

13193 Baker’s Hollow

Susquehannock Campground

• Entrance Station

• Shed

• Baker’s Hollow Parking Lot

18501

3459 Aitch Rd

Aitch Boat Launch & Picnic Area

12202 14554 James Creek Rd James Creek Boat Launch

12205 2285 Shy Beaver Rd Shy Beaver Boat Launch Comfort

A short circuit, overcurrent protection coordination and arc flash analysis was performed on the system and the incident energy levels have been found to be within acceptable ranges as expected. Most equipment was found to have an arc flash incident energy level below 4 cal/cm

, or a Level 1. The majority of the equipment connected to the utility have a high incident energy level, Levels 3 or 4, due to the line side incident energy. Some equipment having very low levels of fault current are rated for

Category 2 or 3 due to arcing faults.

The findings are described in the report and labels are provided in Appendix H.

More details regarding the system layout is shown in Appendix A on the single-line diagrams.

2.2 CODE VIOLATIONS AND RECOMMENDED CORRECTIVE ACTION

1. Common Code Compliance Issues In All Facilities:

a. Panelboard “Fed From” Labels – Recent code changes require that all switchgear, switchboards, and panelboards be labeled with the location where their feeders are fed from. This label must be durable and permanent, not handwritten.

b. Neutral Conductor Sizing – Frequently, the neutral conductors have been sized smaller than the line conductors without verifying compliance with NEC 220.61 requirements. In

US Army Corps of Engineers – Baltimore District February 23, 2017 most cases, when the line conductors are 3/0 AWG Copper (4/0 AWG Aluminum) or smaller, the neutral conductors will need to be the same size as the line conductors.

c. Grounding Electrode Conductors – Many grounding electrode conductors appear to have been sized using NEC Table 250.122 for equipment ground conductors instead of

NEC Table 250.66 for grounding electrode conductors or NEC Table 250.102(C)(1) for bonding jumpers. In many cases they appear to be one or two sizes too small.

d. Comfort Station Panels – In most of the older comfort station utility rooms, the water heater encroaches into the working space for the panelboard, and in some cases prevents the door from opening full 90 degrees. See Figure 1 for example.

e. Picnic Shelter Pavilion Lighting Circuits – Circuit breakers that are used as light switches must be listed and marked “SWD” or “HID”. Either the circuit breakers must be replaced or separate weatherproof light switches provided.

f. RV Distribution Boards – NEC Article 551 requires that RV secondary distribution systems be grounded at the transformer. Most distribution boards appear to have the grounding electrode conductor routed independently to a local ground rod without a bonding jumper to the transformer.

2. 6145 Administration Building:

a. Shelving is installed in front of, and totally concealing, the electrical equipment. The staff had to remove the books and shelves in order for us to access and open the equipment. See Figure 2. The electrical room should not be used for storage at all.

Figure 1 Pine Comfort Station Panel

US Army Corps of Engineers – Baltimore District February 23, 2017

Figure 2 Administration Building Electrical Room

b. We were unable to determine the location of the building service neutral bond to ground. There is no neutral conductor in the utility main disconnect switch and we could not open the transfer switch. This should be investigated and corrected, if necessary.

c. Panelboard A has two buses for single phase, three wire service, but the main breaker has three poles, which is prohibited by code. The panel should be replaced.

3. 6240 Seven Points Entrance Station & Attendant Campsite:

a. During a previous electrical upgrade, a new panelboard and meter were installed and the old meter base was used as a pull box to connect the old panelboard and new panelboard. The old meter base does not have a cover and the live wiring is not protected. The old meter base should be replaced with a proper pull box.

b. We could not safely access the RV Meter Outlet Box wiring to verify compliance with

NEC Article 551 GFCI and neutral grounding requirements. The RV Meter Outlet Box should be replaced with newer equipment.

4. 6259 Maintenance Reservoir Pumping Station:

a. A transformer on the floor blocks access to the working space in front of the wire trough and disconnect switches. See Figure 3.

US Army Corps of Engineers – Baltimore District February 23, 2017

Figure 3 Maintenance Reservoir Pumping Station

Figure 4 Maintenance Building 1 Panel CM1

US Army Corps of Engineers – Baltimore District February 23, 2017

5. 6271 Maintenance Building 1:

a. The disconnect switch and load center CM1 located over the workbench have inadequate working space for operation and maintenance. See Figure 4.

b. The access door to load center CM1A is too small.

6. 6933 Visitor Center Amphitheater:

c. There is evidence of rodents nesting in the electrical equipment, much of which is abandoned. NEC requires that service conductors must be protected from damage between the panel and the service entrance. See Figure 7 in Safety Concerns section.

7. 7836 Wastewater Treatment Plant:

d. The transformer mounted over the motor control center has inadequate working space in front of it for maintenance. See Figure 5.

8. 13876 Well House & Lake Pumping Station:

a. The feeder from the well house to the transformer in the pumping station appears to not have the required equipment grounding conductor. Exceptions for existing installations may be applicable, under certain circumstances.

Figure 5 Wastewater Treatment Plant LV Transformer

US Army Corps of Engineers – Baltimore District February 23, 2017

Figure 6 "Lighthouse" Concession Electrical Closet

1. “Lighthouse” Concession & Comfort Station:

a. Services fed from two phase transformers (e.g., open-delta or T) require 140% rated neutral conductors.

b. The area in front of service equipment is being used for counter space and storage. See

Figure 6.

c. Panel MDP-2 has two buses for single phase, three wire service, but the main breaker has three poles, which is prohibited by code. This panel should be replaced.

The site survey included observation of the electrical system for compliance with current NEC code requirements. Site observations need to be augmented with a more thorough inspection of the system when a shutdown can be scheduled. This will allow for a more comprehensive inspection of the electrical system and appurtenance.

2.3 SAFETY CONCERNS

Overall, the most important safety concern that was observed is that nearly all of the electrical equipment throughout the Raystown Lake Recreation Area – with the exception of the Visitor Center and Ranger Station, the Valley Campground and Point Campground comfort stations, and the Valley

Sewage Lift Station – are significantly beyond their reliable life expectancy. Experience has shown that, after only 15 years, up to 70% of thermal magnetic breakers will fail to trip on an overload condition if they have not been receiving preventive maintenance. The one observation we noted that may have been helping prolong the service life for the panelboards is the routine practice of turning off all of the

US Army Corps of Engineers – Baltimore District February 23, 2017 breakers during the winter months – allowing the bimetallic contacts to rest in a different position for a while. Even so, after 25 to 40 years, these panelboards should be considered completely unreliable and need to be replaced as soon as possible for the safety of the public and maintenance employees. Also, the manufacturers for most of this equipment are no longer in business, which is significantly increasing the cost of continued maintenance.

Other site-specific safety concerns:

1. 6933 Visitor Center Amphitheater:

a. There is evidence of rodents nesting in the electrical equipment, much of which is abandoned. Rodents like to eat wire insulation. Abandoned equipment should be removed and consideration should also be given to removing the wire trough. Installing a continuous conduit from the meter to the distribution panel would help prevent rodents from getting into the equipment. See Figure 7.

2. 7836 Wastewater Treatment Plant:

a. According to the log, the standby generator appears to have not been exercised since

October 1998, and the battery has been disconnected. After sitting unused this long, the generator probably needs to be refurbished or replaced because of interior corrosion and deterioration. Operating it in this condition would not be safe. See Figure 8.

3. 13876 Well House:

a. It is unsafe to enter this building without PPE. There is standing water on the floor, exposed live 480V wiring on the walls – much of it appears to be abandoned making it difficult to know what might be hot – and there is evidence of vermin living inside the building and in the equipment. See Figure 9.

US Army Corps of Engineers – Baltimore District February 23, 2017

Figure 7 Amphitheater Main Distribution Panel

Figure 8 Wastewater Treatment Plant Generator

US Army Corps of Engineers – Baltimore District February 23, 2017

Figure 9 Well House

3.0 CALCULATIONS

3.1 INTRODUCTION

In order to calculate the available incident energy level for the arc flash study, a short circuit analysis and overcurrent protection coordination study must first be performed. The results of the short circuit analysis and overcurrent protection coordination study are used as the inputs for the arc flash analysis and will allow AECOM to find the available incident energy levels.

In order to perform these calculations, an electrical model was built using the software Electrical

Transient Analysis Program (ETAP)® Version 12.5. The following were used as inputs to the electrical model:

• As-built single line with panel and transformer size

• Feeder lengths and sizes

• Circuit breaker sizes and manufacturer/model numbers

3.2 ASSUMPTIONS

1. General Assumptions

US Army Corps of Engineers – Baltimore District February 23, 2017

a. Utility transformer size and percent impedance (%Z). A best guess was made based on physical size and based on assuming the secondary protection is 125% of the transformer full load current (FLA). The percent impedance (%Z) of the transformer was based on ETAP library typical values.

b. Feeder lengths are estimates.

c. Feeder and breaker terminals are rated for 75 degrees C.

3.3 SHORT CIRCUIT ANALYSIS

A short circuit analysis models the maximum current that flows in a power system under fault conditions. Finding the maximum fault current is important as it ensures that the panel bus short circuit bracing and circuit breaker fault interrupting ratings are adequate.

The inputs to the model are described above in the introduction.

The results of the short circuit analysis are tabulated in Appendix C for utility power and Appendix D for generator power. Many panelboards did not have the maximum bus bracing level indicated on the nameplate; however, since the maximum available fault current in the system is less than 10kAIC, all equipment is assumed to have adequate bracing as 10kAIC is the lowest standard bus bracing for equipment.

3.4 OVERCURRENT PROTECTION COORDINATION STUDY

An overcurrent protection coordination study is used to demonstrate that circuit breakers coordinate, where required by code, to minimize power loss, by ensuring that the circuit breaker closest to a fault is the only one that trips.

Knowing the breaker make and model number allows us to find the fault clearing time in order to perform the arc flash analysis.

The time-current curves and the device settings table are provided in Appendix E for added detail. The following circuit breakers should be set based on the settings shown in Appendix E. The arc flash results, and hence arc flash labels, provided as part of this report will not be accurate if the settings are not applied:

1. 12069.ECB-SPILLWAY

2. 12069.GEN1-MB

3. 12069.PANEL DQ1-MB

4. 12075.GEN1-MB

5. 12075.MCC-MB

6. 12222.PANEL BM-FB1

7. 12222.PANEL BM-FB2

8. 12222.PANEL CM-FB1

9. 12222.PANEL CM-FB2

10. 12222.PANEL CM-MB

11. 12222.PANEL DM-MB

12. 12230.PANEL A-MB

13. 16543.MDP-MB

14. 18523.MDP-MB

US Army Corps of Engineers – Baltimore District February 23, 2017

15. 18528.MDP-MB

16. 18529.MDP-MB

17. 18530.MDP-1-MB

18. 18531.MDP-MB

19. 18531.MDP-MB1

3.5 ARC FLASH ANALYSIS

The arc flash analysis was performed in accordance to IEEE 1584 equations which are also published in

NFPA 70E – 2015. It is important to note that these equations are approximations to how the system would behave in the event of an arc flash and are not exact. It is also important to note that the safest way to work on any electrical equipment is to de-energize the live source and verify that there is no voltage present or any alternate feeds to the equipment.

The equations defined in IEEE 1584 are only for three phase systems with a system voltage between

208V and 15kV and an available fault current between 700A and 106,000A. For instances that fall outside the IEEE 1584, such as for less than 208V or single phase systems, Lee’s Method was used to calculate the available incident energy.

Since there is no available methodology described in the guidelines for handling 1-phase system arcs, ETAP uses the 3-Phase IEEE 1584 equations and applies it to 1-Phase systems. All the IEEE 1584 equations are aimed at escalation into 3-phase faults. In general, applying the 3-phase equations for 1-phase systems should be conservative. The intended use of this method in ETAP is to provide engineers a way to estimate the energy for 1-phase installations.

IEEE 1584 2002 states that the arc flash calculation equations were developed based on the assumption that the faults will escalate to three-phase fault. However, the results obtained from the empirical method equations should be conservative for single-phase systems.

The arc flash boundary is defined as the distance from the live source where the available incident energy is equal to 1.2 cal/cm

(or 5 J/cm

) as defined by NFPA 70E. This does not mean that it is perfectly safe to work live on the equipment labeled at this distance but means that the worker will still be exposed to up to a curable second degree burn from a potential arc flash.

The typical working distances are obtained from NFPA 70E – 2015 Table D.4.3.

The limited approach boundary and restricted approach boundary are obtained from NFPA 70E – 2015

Table 130.4(D)(a).

The results of the arc flash analysis for this site are tabled in Appendix F for utility power and Appendix G for generator power. They show that most equipment have an available incident energy level below 4 cal/cm and would require a PPE category of level 1 as defined by NFPA 70E – 2015 Table 130.7(C)(16).

NFPA 70E – 2015 Table 130.7(C)(15)(A)(a) also clarifies when PPE is required for given tasks.

Finally, all labels are provided in PDF format in Appendix H. Only one label is provided for each piece of equipment and it is the worst case scenario between utility and generator power.

US Army Corps of Engineers – Baltimore District February 23, 2017

Table 2 SUMMARY OF ARC FLASH RESULTS

Equipment ID Total Energy (cal/cm²) Energy Levels

6009.ECB- MAIN 3.93 Level 1

6009.MDP 3.92 Level 1

6240.MDP 4.01 Level 2

6240.RV METER BOX 4.01 Level 2

6240.SUBPANEL 3.98 Level 1

6259.PANEL 0.21 Level 1

6259.PUMP 5.68 Level 2

6259.SERVICE DISC-DS 4.23 Level 2

6259.T1-SEC 0.21 Level 1

6259.T2-SEC 5.73 Level 2

6259.WIREWAY 1.52 Level 1

6818.ECB-RV1 13.81 Level 3

6818.ECB-RV2 13.81 Level 3

6818.ECB-RV3 13.81 Level 3

6818.ECB-RV4 13.81 Level 3

12069.ECB SPILLWAY 15.11 Level 3

12069.MCC 1.59 Level 1

12069.MTS 13.91 Level 3

12069.PANEL DQ1 13.89 Level 3

12069.PANEL DR1 3.22 Level 1

12069.PULL BOX 8.81 Level 3

12069.SERVICE DISC-DS 14 Level 3

12069.WELL PUMP-DS 0.12 Level 1

12070.ELEVATOR-DS 1.08 Level 1

12070.PANEL DR2 2.72 Level 1

12070.PANEL DR3 2.85 Level 1

12070.T1-SEC 3.71 Level 1

12070.T2-SEC 5.5 Level 2

12070.TOWER PANEL DQ2 8.53 Level 3

12070.TOWER PANEL DQ3 5.67 Level 2

12072.MAIN DISCONNECT2 17.94 Level 3

12075.MCC 13.82 Level 3

12075.SUBPANEL 8.85 Level 3

12075.T1-SEC 9.07 Level 3

12075.T1-SEC2 8.5 Level 3

12088.MAIN DISCONNECT 4.2 Level 2

12088.PUMP CONTROLLER 4.2 Level 2

12148.BACKWASH-DS 1.41 Level 1

12148.PANEL D 8.67 Level 3

12148.PUMPS- CONTROLLER 0.043 Level 1

12148.PUMPS-DS 0.043 Level 1

12148.SERVICE DISCONNECT 12.61 Level 3

12148.SITE LIGHTING-DS 1.41 Level 1

12148.T-PANEL D-DS 1.4 Level 1

US Army Corps of Engineers – Baltimore District February 23, 2017

12148.T1-SEC 8.77 Level 3

12148.WIREWAY 1.39 Level 1

12155.LOAD CENTER 4.04 Level 2

12157.LOAD CENTER 1.79 Level 1

12160.LOAD CENTER 4.04 Level 2

12162.LTG PNL - DS 0.028 Level 1

12162.MAIN DISCONNECT 6.08 Level 2

12162.WIREWAY 1 5.42 Level 2

12162.WIREWAY 2 5.56 Level 2

12163.DS-RV1A 11.66 Level 3

12163.DS-RV1B 11.66 Level 3

12163.DS-RV1C 11.66 Level 3

12163.DS-RV1D 11.66 Level 3

12163.DS-RV2A 11.66 Level 3

12163.DS-RV2B 11.66 Level 3

12163.DS-RV2C 11.66 Level 3

12163.DS-RV3A 11.66 Level 3

12163.DS-RV3B 11.66 Level 3

12163.EWH-DS 13.82 Level 3

12163.PANEL BM2 0.084 Level 1

12163.SUBPANEL 0.046 Level 1

12163.T1-SEC 4.05 Level 2

12163.WIREWAY 1 11.77 Level 3

12163.WIREWAY 3 11.77 Level 3

12163.WIREWAY 4 11.77 Level 3

12164.DS-PAVILION 6.37 Level 2

12164.DS-RV1A 7.74 Level 2

12164.DS-RV1B 7.42 Level 2

12164.DS-RV1C 7.74 Level 2

12164.DS-RV2A 7.91 Level 2

12164.DS-RV2B 8.08 Level 3

12164.DS-RV2C 7.74 Level 2

12164.DS-RV3A 7.91 Level 2

12164.DS-RV3B 8.08 Level 3

12164.DS-RV3C 7.74 Level 2

12164.DS-RV4A 7.91 Level 2

12164.DS-RV4B 8.08 Level 3

12164.DS-RV4C 7.74 Level 2

12164.LOAD CENTER 6.37 Level 2

12164.MDP 7.59 Level 2

12169.MDP 4.01 Level 2

12170.MDP3 3.84 Level 1

12171.MDP 4.01 Level 2

12172.EWH-DS 13.26 Level 3

12172.FAN-DS 13.26 Level 3

12172.LTG PANEL 4.87 Level 2

12172.LTG PNL-DS 13.26 Level 3

US Army Corps of Engineers – Baltimore District February 23, 2017

12172.T1-SEC 4.89 Level 2

12172.WIREWAY 13.47 Level 3

12173.MDP 5.68 Level 2

12174.MDP 3.84 Level 1

12175.MDP 4.04 Level 2

12176.ECB-RV1 11.54 Level 3

12176.ECB-RV2 11.54 Level 3

12176.ECB-RV3 11.54 Level 3

12176.MDP 8.92 Level 3

12176.WIREWAY 11.65 Level 3

12177.LOAD CENTER 3.95 Level 1

12178.MDP 3.76 Level 1

12179.LTG PANEL B 0.035 Level 1

12179.T1-SEC 0.035 Level 1

12201.LOAD CENTER 3.78 Level 1

12202.LOAD CENTER 4.04 Level 2

12205.LOAD CENTER 4.04 Level 2

12209.LOAD CENTER 3.95 Level 1

12221.MDP 3.8 Level 1

12221.SUBPANEL 0.82 Level 1

12222.AHU 6.22 Level 2

12222.ECB-AHU 0.39 Level 1

12222.HEAT PUMP 0.23 Level 1

12222.HEAT PUMP-2 0.25 Level 1

12222.LOAD CENTER CM1 0.13 Level 1

12222.LOAD CENTER CM1A 0.13 Level 1

12222.LOAD CENTER DM1 0.21 Level 1

12222.PANEL BM 5.97 Level 2

12222.PANEL CM 0.21 Level 1

12222.PANEL DM 0.21 Level 1

12222.SERVICE DISC 14.43 Level 3

12222.T1-SEC 0.35 Level 1

12222.T2-SEC 0.35 Level 1

12229.MTS 19.83 Level 3

12229.PANEL MDP 18.34 Level 3

12229.SUBPANEL 16.62 Level 3

12230.AHU- DS 3.04 Level 1

12230.CONDENSING UNIT-DS 0.10 Level 1

12230.EWH- DS 0.027 Level 1

12230.MTS 18.28 Level 3

12230.PANEL A 0.28 Level 1

12230.SERVICE DISCONNECT 18.53 Level 3

12230.WIREWAY EQUIP 11.98 Level 3

12231.ATS 3.95 Level 1

12231.MDP-2 3.96 Level 1

12231.SUBPANEL-2 3.93 Level 1

13014.MDP 3.9 Level 1

US Army Corps of Engineers – Baltimore District February 23, 2017

16543.MDP 36.97 Level 4

16543.MDP-LINE SIDE 36.97 Level 4

16543.PANEL PLL 17.46 Level 3

16543.PANEL PLU 0.17 Level 1

16543.PANEL PRL 0.31 Level 1

16543.PANEL PRU 0.22 Level 1

18501.ECB-MAIN 4.04 Level 2

18501.LOAD CENTER 3.98 Level 1

18502.LOAD CENTER 4.04 Level 2

18523.MDP 28.37 Level 4

18524.FRYERS 2-DS 14.92 Level 3

18524.FRYERS-DS 14.92 Level 3

18524.GRILL-DS 14.92 Level 3

18524.LOAD CENTER 0.073 Level 1

18524.MDP-1 4.5 Level 2

18524.MDP-1-DS 13.59 Level 3

18524.MDP-2 14.97 Level 3

18524.SPARE-DS 14.92 Level 3

18524.WIREWAY 15.1 Level 3

18525.ECB-RV1A 14.32 Level 3

18525.ECB-RV1B 14.32 Level 3

18525.ECB-RV1C 14.32 Level 3

18525.ECB-RV1D 14.32 Level 3

18525.ECB-RV2A 14.77 Level 3

18525.ECB-RV2B 14.77 Level 3

18525.ECB-RV2C 14.77 Level 3

18525.ECB-RV2D 14.77 Level 3

18525.MDP-1 10.34 Level 3

18525.WIREWAY 14.5 Level 3

18525.WIREWAY 2 14.95 Level 3

18526.LOAD CENTER 3.84 Level 1

18527.LOAD CENTER 3.84 Level 1

18528.DS-RV1 12.01 Level 3

18528.DS-RV2A 14.44 Level 3

18528.DS-RV2B 9.68 Level 3

18528.LOAD CENTER 0.11 Level 1

18528.MDP 14.19 Level 3

18529.DS-RV1A 15.09 Level 3

18529.DS-RV1B 13.47 Level 3

18529.DS-RV1C 10.36 Level 3

18529.DS-RV2 8.67 Level 3

18529.ECB-EWH 27.55 Level 4

18529.LOAD CENTER 0.091 Level 1

18529.MDP 27.94 Level 4

18530.ECB-RV1A 11.97 Level 3

18530.ECB-RV1B 11.97 Level 3

18530.ECB-RV1C 11.97 Level 3

US Army Corps of Engineers – Baltimore District February 23, 2017

18530.ECB-RV2A 12 Level 3

18530.ECB-RV2B 12 Level 3

18530.ECB-RV2C 12 Level 3

18530.ECB-RV2D 12 Level 3

18530.ECB-RV3A 11.96 Level 3

18530.ECB-RV3B 11.96 Level 3

18530.ECB-RV3C 11.96 Level 3

18530.MDP-1 21.93 Level 3

18530.MDP-2 0.26 Level 1

18530.WIREWAY 1 12.07 Level 3

18530.WIREWAY 2 12.11 Level 3

18530.WIREWAY 3 12.07 Level 3

18531.ECB-MAIN 3.93 Level 1

18531.LOAD CENTER 3.8 Level 1

18531.MDP 3.92 Level 1

18531.PANEL 1 0.77 Level 1

18531.PANEL 2 0.79 Level 1

MAINT. BLDG 5 PANEL 4.12 Level 2

US Army Corps of Engineers – Baltimore District February 23, 2017

APPENDIX A – AS-BUILT SINGLE LINE DIAGRAM

E-001

EXISTING CONDITIONS RESOURCE DRAWING. NOT FOR CONSTRUCTION.

Sheet List Table

Sheet Number Abbreviated Sheet Title

E-001 COVER SHEET

Seven Points Rd

6145-EP601 RAYSTOWN LAKE - 12230 ADMIN

6240-EP601 RAYSTOWN LAKE - SEVEN PTS ENTRANCE STATION

6259-EP601 RAYSTOWN LAKE - MAINT RES PUMP STATION

6269_6271-EP601 RAYSTOWN LAKE - 12232 MAINT BLDG 3 & 12222 MAINT BLDG 1

6273_6275-EP601 RAYSTOWN LAKE - 12221 MAINT BLDG 2 & MAINT BLDG 4

6737-EP601 RAYSTOWN LAKE - 12163 RIDGE CAMPGROUND

6817-EP601 RAYSTOWN LAKE - 12164 MEADOW CAMPGROUND

6818-EP601 RAYSTOWN LAKE - VOLUNTEER VILLAGE CAMPGROUND

6764-EP601 RAYSTOWN LAKE - 12148 WATER TREATMENT

6933-EP601 RAYSTOWN LAKE - 18523 AMPHITHEATER

6993-EP601 RAYSTOWN LAKE - 16543 VISITOR CENTER

7053-EP601 RAYSTOWN LAKE - 13014 PINE COMFORT STA & 12178 PINE PAVILION

7336-EP601 RAYSTOWN LAKE - 12170 MUSHROOM COMFORT STATION

7363-EP601 RAYSTOWN LAKE - 12173 OAK COMFORT STATION

7416-EP601 RAYSTOWN LAKE - 12209 OAK PAVILION

7836-EP601 RAYSTOWN LAKE - 12075 WASTEWATER TREATMENT

7448-EP601 RAYSTOWN LAKE - 12088 BEACH SEWAGE LIFT STATION

7636_7683-EP601 RAYSTOWN LAKE - 12174 & 12175 BAY BOAT LAUNCH COMFORT STATIONS

7929-EP601 RAYSTOWN LAKE - 12176 BAY CAMPGROUND

Point Camp Rd

13876-EP601 RAYSTOWN LAKE - 12162 WELL HOUSE & 12179 LAKE PUMP STATION

14003-EP601 RAYSTOWN LAKE - 12072 VALLEY CAMP SEWAGE LIFT STATION

14004-EP601 RAYSTOWN LAKE - 18525 VALLEY CAMPGROUND

14156-EP601 RAYSTOWN LAKE - 18530 POINT CAMPGROUND

Howard Miller Rd

13995-EP601 RAYSTOWN LAKE - 18526 DOGWOOD & 18527 REDBUD PAVILIONS

14079-EP601 RAYSTOWN LAKE - 12169 MILLER COMFORT STATION

Beach Rd

14201-EP601 RAYSTOWN LAKE - 18524 & 12172 LIGHTHOUSE

14215-EP601 RAYSTOWN LAKE - 12171 LAUREL COMFORT STATION

14232-EP601 RAYSTOWN LAKE - 12177 ALLEGHENY PAVILION

Senoia Camp Rd

6009-EP601 RAYSTOWN LAKE - SENOIA BOAT HOUSE

6106-EP601 RAYSTOWN LAKE - 18529 SENOIA I CAMPGROUND

6287-EP601 RAYSTOWN LAKE - 18528 SENOIA II CAMPGROUND

Raystown Dam Rd

12142-EP601 RAYSTOWN LAKE - 12229 DAM MAINT BLDG & 12157 PAGODA COMFORT STA

12197-EP601 RAYSTOWN LAKE - 12069 SPILLWAY & 12070 TOWER

Point Rd

13233-EP601 RAYSTOWN LAKE - 12155 & 18502 CORBIN'S ISLAND PICNIC AREA

Snyders Run Rd

12136-EP601 RAYSTOWN LAKE - 12160 SNYDER'S RUN ACCESS AREA

Bakers Hollow Rd

13193-EP601 RAYSTOWN LAKE - 18531 & 10281 SUSQUEHANNOCK CAMPGROUND

Aitch Rd

3459-EP601 RAYSTOWN LAKE - 18501 & 12201 AITCH ACCESS AREA

James Creek Rd

14554-EP601 RAYSTOWN LAKE - 12202 JAMES CREEK ACCESS AREA

Shy Beaver Rd

2285-EP601 RAYSTOWN LAKE - 12205 SHY BEAVER ACCESS AREA

TR

, S

IT

TO

, D

T:

2-

:2

-8

-0

.S

IM

, M

ZA

LU

TI

, P

. W

2D

6-

Filename: AECOM6052825-RAYSTO-E-001.dwg Plotted: 2/23/2017 8:48:32 AM Plot Scale: 1:4.856796By: Boktor, Mark

SHEET ID

2 3 4 5 6 7 8 9 10

J

TYPICAL SINGLE LINE ELECTRICAL SYMBOLS

GROUND (EARTH) CONNECTION

TRANSFORMER

SERVICE WEATHERHEAD

ELECTRICAL UTILITY METER

NON-FUSIBLE DISCONNECT SWITCH

FUSIBLE DISCONNECT SWITCH

CIRCUIT BREAKER

ENCLOSED CIRCUIT BREAKER DISCONNECT

DUPLEX RECEPTACLE, GROUND FAULT

INTERRUPTER PROTECTED

CAMLOCK OR RECEPTACLE TYPE ROLL-UP

GENERATOR CONNECTION

NON-FUSIBLE DISCONNECT SWITCH

(FOR REFERENCE ONLY)

FUSIBLE DISCONNECT SWITCH

COMBINATION MOTOR STARTER/CONTROLLER

MOTOR STARTER/CONTROLLER

GENERATOR

AUTOMATIC TRANSFER SWITCH

MANUAL TRANSFER SWITCH OR

DOUBLE-THROW SAFETY SWITCH

MOTOR, SINGLE PHASE

MOTOR, THREE PHASE

LINE CONDUCTOR SIZE(S) FOR SERVICE OR

FEEDER

SHEET KEYNOTE - CODE REFERENCES ARE TO

NFPA 70-2017 UNLESS OTHERWISE INDICATED

METER#

UTILITY CO

DS-XXXX

3P/30A

DS-XXXX

RK-3/30A

1,3,5

ECB-XXXX

ATS-XXXX

MTS-XXXX

75 kVA

209008373

VREC

DS-MAIN

2P/400A

MTS (SQD 9255)

400A

CROUSE HINDS

400A CAMLOCK

GEN CONNECTION

MAIN

3P/150A

PANEL A

120/240V, 160A, 1PH, 3W

DS-EQUIPMENT

2P/400

DS-CU

2P/60A

DS-EWH

DS-AHU

2P/200A

OUTDOOR

CONDENSING UNIT

45KW EWH AHU WITH

ELEC HEAT

WIREWAY

NOTE: IT IS UNCLEAR

WHERE NEUTRAL BOND

TO GROUND TAKES

PLACE.

120/240V, 1PH

95kW, 95 kVA

ROLL-UP GENERATOR

IA

TS

IL

EP601

NOT TO SCALE

12230 ADMINISTRATION BUILDING

A2

Filename: AECOM6052825-RAYSTO-6145-EP601.dwg Plotted: 2/23/2017 8:48:37 AM Plot Scale: 1:1By: Boktor, Mark

SHEET KEYNOTES

(3) 10 kVA

480Y/277V

209023600

D-MAIN

NOTE: EXPOSED LIVE WIRES

DUE TO MISSING TROUGH

COVER. ABANDONED MESS

OF WIRING AND EQUIPMENT.

EVIDENCE OF VERMIN LIVING

IN BUILDING AND EQUIPMENT.

WATER STANDING ON FLOOR.

D-T-LTG PANEL B

7.5 kVA 3.1% Z

2P/40A

LTG PANEL B

1PH, 3W

VALLEY CAMP WELL HOUSE

LAKE PUMPING STATION

TA

13876

12162 WELL HOUSE & 12179 LAKE PUMPING STATION

Filename: AECOM6052825-RAYSTO-13876-EP601.dwg Plotted: 2/23/2017 8:50:15 AM Plot Scale: 1:1By: Boktor, Mark

209023773

209004573

DS-FRYERS

DS-GRILL

DS-FRYERS

DS-SPARE

MDP-2

120/240V, 200A, DS-MAIN1

MDP-1

14,16

2P/100A

LOAD CENTER

120/240V, 100A, 240/120V 3 PH 4 WIRE, HIGH LEG

480Y/277V

209023603

DS-T-LTGPANEL

2P/60A

DS-FAN

DS-EWH

15 kVA 3% Z

SHOWER COMFORT STATION

2P/100A

LTG PANEL

120/240V 150A, A N a b c (high leg)n

14.4kV OPEN WYE

37.5 kVA & 25 kVA

120/240V OPEN DELTA

CONCESSION

TH

" 1

FO

TA

14201

12172 "LIGHTHOUSE" COMFORT STATION

Filename: AECOM6052825-RAYSTO-14201-EP601.dwg Plotted: 2/23/2017 8:50:45 AM Plot Scale: 1:1By: Boktor, Mark

18524 "LIGHTHOUSE" CONCESSION STAND

A6

US Army Corps of Engineers – Baltimore District February 23, 2017

APPENDIX B – ETAP SINGLE LINE DIAGRAM

One-Line Diagram - OLV1 (Short-Circuit Analysis) page 1 08:54:41 Feb 23, 2017 Project File: Raystown Lake

12230.ADMINISTRATION BUILDING

12230.SERVICE DISCONNECT

12230.MTS-N

0.24 kV

12230.MTS

0.14

4.52 kA

12230.PANEL A

0.24 kV 0.15

4.4 kA

12230.WIREWAY EQUIP

4.03 kA

12230.CONDENSING UNIT-DS

0.15

3.66 kA

12230.EWH- DS

2.77 kA 12230.AHU- DS

3.91 kA

12230.UT1-SEC

12230.UT1-PRI

12230.U1 150 MVAsc

12230.UT1

3 %Z 14.4/0.24 kV

Cable1

3-1/C 500 CU 100 ft

Cable29

3-1/C 2/0 CU 10 ft

12230.AHU-DS FUSE

150 A

12230.AHU-DS

Cable27

3-1/C 12

12230.EWH-DS FUSE

20 A

12230.EWH-DS

Cable25

3-1/C 6

12230.COND UNIT-DS FUSE

60 A

12230.COND UNIT-DS

Cable7

3-1/C 350 CU 50 ft

12230.EQUIPMENT-DS FUSE

250 A

12230.EQUIPMENT-DS

12230.PANEL A-MB

Cable5

CU 8 ft

12230.ROLL-UP GEN

95 kW

Cable3

12230.SERVICE DISC-FUSE

400 A

12230. SERVICE DISC-DS

12230. MTS

12230.SERVICE DISCONNECT

12230.MTS-N

12230.UT1-SEC

12230.UT1-PRI

12230.U1

12230.UT1

Cable1

CU 100 ft

12230. MTS

12230. SERVICE DISC-DS

12230.SERVICE DISC-FUSE

400 A

Cable3

12230.MTS

0.14

4.52 kA

4.524.52

Cable5

12230.PANEL A-MB

12230.PANEL A

4.4 kA

4.44.4

Cable7

3-1/C 350 CU 50 ft

12230.WIREWAY EQUIP

4.03 kA

4.034.03

12230.EQUIPMENT-DS

12230.EQUIPMENT-DS FUSE

250 A

Cable25

3-1/C 6

12230.COND UNIT-DS

12230.COND UNIT-DS FUSE

60 A

12230.CONDENSING UNIT-DS

3.66 kA

3.663.66

Cable27

3-1/C 12

12230.EWH-DS FUSE

12230.EWH-DS

12230.EWH- DS

2.77 kA

2.772.77

Cable29

12230.AHU-DS FUSE

12230.AHU-DS

12230.AHU- DS

3.91 kA

3.913.91

12230.ROLL-UP GEN

95 kW page 1 09:01:19 Feb 23, 2017 Project File: Raystown Lake

12162. WELL HOUSE & 12179

LAKE PUMPING STATION

12179.T1-SEC

12179.LTG PANEL B

0.24 kV 0.13

0.509 kA

12179.T1-PRI

12162.LTG PNL - DS

0.48 kV 0.28

1.13 kA

12162.WIREWAY 2

12162.WIREWAY 1

1.14 kA

12162.MAIN DISCONNECT

12162.UT1-SEC

12162.UT1-PRI

12162.U1

12162.UT1

14.4/0.48 kV 30 kVA

Cable8

AL 90 ft

12221.MDP-DS6

12221.MDP-FUSE6

100 A

Cable12

3-1/C 2 CU 15 ft

12162.LTG PNL -DS

12162.LTG PNL - DS FUSE

Cable24

3-1/C 8 CU 575 ft

12179.T1

2.3 %Z 0.48/0.24 kV

7.5 kVA

12179.LTG PANEL B-MB

40 A

12179.T1-SEC

12179.T1-PRI

12162.UT1-SEC

12162.UT1-PRI

12162.U1

12162.UT1

30 kVA

12162.WIREWAY 1

12221.MDP-DS6

12221.MDP-FUSE6

1.141.14

12162.MAIN DISCONNECT

Cable8

AL 90 ft

1.141.14

Cable12

CU 15 ft 12162.WIREWAY 2

1.131.13

12162.LTG PNL -DS

12162.LTG PNL - DS FUSE

1.131.13

12162.LTG PNL - DS

Cable24

CU 575 ft

12179.T1

7.5 kVA

12179.LTG PANEL B

0.509 kA

12179.LTG PANEL B-MB

40 A

0.5090.509 page 1 09:03:47 Feb 23, 2017 Project File: Raystown Lake

12169. MILLER COMFORT STATION

18524. "LIGHTHOUSE" CONCESSION STAND

12075.UT1-SEC2

12172.WIREWAY

2.54 kA

12172.EWH-DS

2.49 kA

12172.FAN-DS

12172.LTG PNL-DS

12172.T1-PRI

12172.T1-SEC

12172.LTG PANEL

1.29 kA

12075.UT1-PRI2

18524.WIREWAY

3.54 kA

18524.MDP-2

3.49 kA

18524.FRYERS 2-DS

3.48 kA

18524.FRYERS-DS

18524.SPARE-DS

18524.GRILL-DS

18524.UT1-SEC

18524.MDP-1-DS

0.24 kV 0.14

3.07 kA

18524.MDP-1

18524.LOAD CENTER

2.96 kA

18524.UT1-PRI

18524.U1

18524.UT1

62.5 kVA

Cable204

18524.MDP-1-FB1

18524.MDP-1-DS FUSE

200 A

18524.MDP-1- DS

Cable206

3-1/C 4/0 AL 150 ft

Cable189

Cable191

CU 4 ft

Cable194

Cable196

Cable198

18524.MDP-2-MB

Cable200

3-1/C 3/0 CU 5 ft

12075.U3

12075.UT3

12172.LTG PANEL-MB

Cable178

CU 3 ft

12172.T1

15 kVA

Cable179

CU 6 ft

12172.LTG PNL-DS FUSE

50 A

12172.LTG PNL- DS

Cable183

12172.FAN-DS FUSE

15 A

12172.FAN- DS

Cable185

12172.EWH-DS FUSE

12172.EWH- DS

Cable187

Cable181

18524.WIREWAY

3.54 kA

12075.UT1-SEC2

12075.UT1-PRI2

12075.U3

12075.UT3

12172.T1-SEC

12172.T1-PRI

Cable179

CU 6 ft

12172.T1

15 kVA

Cable178

CU 3 ft

1.291.29

12172.LTG PANEL

1.29 kA

12172.LTG PANEL-MB

Cable181

12172.WIREWAY

2.54 kA

2.542.54

Cable183

12172.LTG PNL- DS

12172.LTG PNL-DS FUSE

50 A

12172.LTG PNL-DS

2.492.49

Cable185

12172.FAN-DS

12172.FAN- DS

12172.FAN-DS FUSE

Cable187

12172.EWH-DS

12172.EWH- DS

12172.EWH-DS FUSE

18524.UT1-SEC

18524.UT1-PRI

18524.U1

18524.UT1

62.5 kVA

Cable189

3.543.54

Cable191

18524.GRILL-DS

3.483.48

Cable194

18524.SPARE-DS

Cable196

18524.FRYERS-DS

Cable198

18524.FRYERS 2-DS

Cable200

3-1/C 3/0 CU 5 ft

3.493.49

18524.MDP-2

3.49 kA

18524.MDP-2-MB

Cable204

18524.MDP-1- DS

18524.MDP-1-DS FUSE

18524.MDP-1-DS

Cable206

3.073.07

18524.MDP-1

3.073.07

18524.MDP-1-FB1

18524.LOAD CENTER

2.96 kA

2.962.96

US Army Corps of Engineers – Baltimore District February 23, 2017

APPENDIX C – SHORT CIRCUIT ANALYSIS WITH UTILITY POWER

Location: Raystown Lake

Engineer: AECOM Study Case: SC

12.5.0C

Page: 1

SN: URSWASHDC

Filename: Raystown Lake

Project: Arc Flash Hazard Program ETAP

Contract: W912DR-16-D-0007

Date: 02-23-2017

Revision: Base

Config.: Utility

Electrical Transient Analyzer Program

Short-Circuit Analysis

ANSI Standard

3-Phase, LG, LL, & LLG Fault Currents

1/2 Cycle Network

Number of Buses:

Number of Branches:

Number of Machines:

Swing V-Control TotalLoad

XFMR2 Total Tie PDImpedanceLine/CableReactorXFMR3

Synchronous

Generator Total

Lumped

Load

Induction

Machines

Synchronous

Motor

Power

Grid

Unit System:

Project Filename:

Output Filename:

System Frequency: 60.00 Hz

English

Raystown Lake

W:\Projects\60520825-USACE Arc Flash Program Phase 2\Reports\01. Raystown Lake\Raystown

Lake\AF Gen.SA2

Page: 2

Adjustments

Transformer Impedance:

Reactor Impedance:

Tolerance

Overload Heater Resistance:

Transmission Line Length:

Cable Length:

Temperature Correction

Transmission Line Resistance:

Cable Resistance:

Percent

Degree C

Individual

/Global

/Global

Apply

Apply

Yes

No

Page: 5

ID Type

Bus

Sub-sys

Initial Voltage

%Mag. Ang.Base kVNom. kV

0.480 0.480Load12148.PUMPS-DS 17 -30.00 100.00

0.480 0.480Load12148.SERVICE

DISCONNECT

17 -30.00 100.00

0.480 0.480Load12148.SITE LIGHTING-DS 17 -30.00 100.00

0.480 0.480Load12148.T-PANEL D-DS 17 -30.00 100.00

0.480 0.480Load12148.T1-PRI 17 -30.00 100.00

0.208 0.208Load12148.T1-SEC 17 -60.00 100.00

14.400 14.400SWNG12148.UT1-PRI 17 0.00 100.00

0.480 0.480Load12148.UT1-SEC 17 -30.00 100.00

0.480 0.480Load12148.WIREWAY 17 -30.00 100.00

0.240 0.240Load12155.LOAD CENTER 51 -30.00 100.00

14.400 14.400SWNG12155.UT1-PRI 51 0.00 100.00

0.240 0.240Load12155.UT1-SEC 51 -30.00 100.00

0.240 0.240Load12157.LOAD CENTER 49 -30.00 100.00

0.240 0.240Load12160.LOAD CENTER 52 -30.00 100.00

14.400 14.400SWNG12160.UT1-PRI 52 0.00 100.00

0.240 0.240Load12160.UT1-SEC 52 -30.00 100.00

0.480 0.480Load12162.LTG PNL - DS 29 -30.00 100.00

0.480 0.480Load12162.MAIN DISCONNECT 29 -30.00 100.00

14.400 14.400SWNG12162.UT1-PRI 29 0.00 100.00

0.480 0.480Load12162.UT1-SEC 29 -30.00 100.00

0.480 0.480Load12162.WIREWAY 1 29 -30.00 100.00

0.480 0.480Load12162.WIREWAY 2 29 -30.00 100.00

0.240 0.240Load12163.DS-RV1A 8 -30.00 100.00

0.240 0.240Load12163.DS-RV1B 8 -30.00 100.00

0.240 0.240Load12163.DS-RV1C 8 -30.00 100.00

0.240 0.240Load12163.DS-RV1D 8 -30.00 100.00

0.240 0.240Load12163.DS-RV2A 10 -30.00 100.00

0.240 0.240Load12163.DS-RV2B 10 -30.00 100.00

0.240 0.240Load12163.DS-RV2C 10 -30.00 100.00

0.240 0.240Load12163.DS-RV3A 9 -30.00 100.00

0.240 0.240Load12163.DS-RV3B 9 -30.00 100.00

0.480 0.480Load12163.EWH-DS 7 -30.00 100.00

0.480 0.480Load12163.PANEL BM2 7 -30.00 100.00

0.240 0.240Load12163.SUBPANEL 7 -60.00 100.00

0.480 0.480Load12163.T1-PRI 7 -30.00 100.00

0.240 0.240Load12163.T1-SEC 7 -60.00 100.00

Page: 6

14.400 14.400SWNG12163.UT1-PRI 7 0.00 100.00

0.480 0.480Load12163.UT1-SEC 7 -30.00 100.00

14.400 14.400SWNG12163.UT2-PRI 8 0.00 100.00

0.240 0.240Load12163.UT2-SEC 8 -30.00 100.00

14.400 14.400SWNG12163.UT3-PRI 10 0.00 100.00

0.240 0.240Load12163.UT3-SEC 10 -30.00 100.00

14.400 14.400SWNG12163.UT4-PRI 9 0.00 100.00

0.240 0.240Load12163.UT4-SEC 9 -30.00 100.00

0.240 0.240Load12163.WIREWAY 1 8 -30.00 100.00

0.240 0.240Load12163.WIREWAY 3 10…