Electrical Support System Description Document REV 03, ICN 00


000-3YD-EU00-00100-000-003

June 2004 

1. INTRODUCTION 
The purpose of this revision of the System Design Description (SDD) is to establish requirements 
that drive the design of the electrical support system and their bases to allow the design effort to 
proceed to License Application. This SDD is a living document that will be revised at strategic 
points as the design matures over time. This SDD identifies the requirements and describes the 
system design as they exist at this time, with emphasis on those attributes of the design provided 
to meet the requirements. This SDD has been developed to be an engineering tool for design 
control. Accordingly, the primary audiencelusers are design engineers. This type of SDD both 
"leads" and "trails" the design process. It leads the design process with regard to the flow down 
of upper tier requirements onto the system. Knowledge of these requirements is essential in 
performing the design process. The SDD trails the design with regard to the description of the 
system. The description provided in the SDD is a reflection of the results of the design process 
to date. 
Functional and operational requirements applicable to electrical support systems are obtained 
from the Project Functional and Operational Requirements (F&OR) (Siddoway 2003). Other 
requirements to support the design process have been taken from higher-level requirements 
documents such as the Project Design Criteria Document (PDC) (Doraswamy 2004), and fire 
hazards analyses. The above-mentioned low-level documents address Project Requirements 
Document (PRD) (Canon and Leitner 2003) requirements. 
This SDD contains several appendices that include supporting information. Appendix B lists key 
system charts, diagrams, drawings, and lists, and Appendix C includes a list of system 
procedures. 
1.1 SYSTEM OR FACILITY IDENTIFICATION 
The electrical support system supports the repository infrastructure by providing adequate and 
reliable electric support for construction and operation of all surface facilities and subsurface 
facilities. The electrical support systems for the emergency power system equipment will be 
seismically designed for the 1000-year earthquake. Acceptability of passive equipment such as 
cable trays and supports will be verified by analysis. 
The electrical support system includes the following subsystems: 
Lighting 
Grounding 
Lightning protection 
Cathodic protection 
Heat tracing 
Cable raceway (including underground ducts) 
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Electrical Support SDD 
1.1.1 Lighting 
The scope of the lighting subsystem is to provide and maintain highly reliable and adequate 
lighting for all areas of the repository facility, including subsurface lighting, to fulfill its 
fimctions per the requirements of the IESNA Lighting Handbook, Reference & Application (Rea 
2000), the National Electrical Code, (NFPA 70-2002) and IESNA Recommended Practice for 
Tunnel Lighting (ANSIIIESNA RP-22-96). The lighting requirements for the safeguards and 
security system are described in the Safeguard and Security SDD. Distribution voltage levels 
for the electrical system are described in the Electrical Power SDD. The lighting subsystem is 
divided into three subsystems: normal, essential, and emergency. 
Normal Lighting system: 
Normal lighting is provided in areas where sudden loss of light does not have any impact on 
either safety or production. Based on the power requirements, it is defined as a lighting system 
that receives 4801277 VAC (volts-alternating current) or 2081120 VAC power from the preferred 
230 kV utility power source, and backed by a 138 kV alternate utility power source. 
Essential Lighting System: 
Essential lighting is provided in areas where long periods of loss of light have impact on 
production, or the safety to personnel. Based on the power requirements, it is defined as a 
lighting system that receives 4801277 VAC or 2081120 VAC power from the preferred 230 kV 
utility power source, and backed by the following sources: 
Alternate 138 kV utility power source 
12.47 kV standby diesel generators 
Emergency Lighting System: 
Emergency lighting system includes egress lighting system. Emergency lighting is provided in 
areas where emergency operations, control operations, sustained system operations and egress 
from the facility are required during emergency and off-normal events. Based on the power 
requirements, it is defined as a lighting system that receives 4801277 VAC or 2081120 VAC 
power from the preferred 230 kV utility power source, and backed by the following sources: 
Alternate 138 kV utility power source 
4.16 kV emergency diesel generators 
UPS system for the lighting area that cannot tolerate momentary loss of light. 
Further, egress lighting is powered by self-contained dry battery packslinverters within each 
fixture that turn light on upon loss of 120 VAC. Therefore, egress lighting is not connected to an 
emergency bus. 
1.1.2 Grounding 
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Elecbical Support SDD 
The scope of the grounding subsystem is to: 
0 Protect personnel from electric shock hazards 
0 Protect equipment from excessive voltages 
Facilitate fault isolation 
Permit the dissipation of maximum ground fault currents 
Provide a stable reference point for instrumentation and control circuits, 
The ground grid in the switchyard area is designed per the requirements of IEEE Standard 80- 
2000 to ensure that personnel and operating equipment are safe from harmful and destructive 
effects of high-ground potentials under all modes of repository operating conditions. This 
ground grid interfaces with the grounding of: subsurface facilities, power system, surge 
protection, instrument, equipmentlraceway, facility lstructure/lightning protection, railroad and 
fence. See Figure 2-1. 
1.1.3 Lightning Protection 
The scope of the lightning protection subsystem is to provide a designated low resistance path to 
the site grounding system for the lightning current per design requirements of NFPA Standard 
780-2001, Standard for the Installation of Lightning Protection Systems, and UL 96A-2001, 
Installation Requirements for Lightning Protection Systems. The system neither attracts nor 
repels a lightning strike, but simply intercepts and guides the lightning current harmlessly to the 
ground. The lightning protection is provided to structures that project above surrounding parts 
such as building roofs, shaft houses, chimneys, ventilators, flagpoles, towers, antennas, water 
tanks, switchyard electrical equipment, and above ground storagelaging areas (i.e. surface aging 
areas). 
1.1.4 Cathodic Protection 
The scope of the cathodic protection subsystem is to control external corrosion on the metallic 
pipes, tanks and structures buried in, or in contact with the ground per the requirements of 
National Association of Corrosion Engineers (NACE) Standard RPOl69-2002. 
1.1.5 Heat Tracing 
The scope of the electric heat tracing subsystem is to provide freeze protection for liquid filled 
piping, instrument sensing lines, and tanks that are susceptible to freezing per the requirements of 
IEEE Std. 515-1997 and NFPA 70-2002. The electric heat tracing subsystem uses a self-limiting 
heating cable, or electrical heating element, around the pipe or sensing line to keep the liquid 
above its freezing point. The electrical supply for the heat tracing subsystem is 2081120 VAC, 3- 
phase, 4-wire service. 
1.1.6 Cable Raceway 
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Elecbical Support SDD 
The scope of the cable raceway subsystem is to provide a highly reliable cable raceway system to 
fulfill its functions per the requirements of NFPA 7G2002. The cable raceway subsystem is 
primarily used to provide physical protection and routing of electrical power, control, and 
instrument cables from the power supply to the electrical loads and of cables interconnecting 
control and monitoring equipment. The cable raceway subsystem is comprised of metallic or 
nonmetallic conduits, enclosed or open cable trays, electrical boxes, and the underground 
electrical duct bank system, including manholes and handholes. The cable tray system and 
conduits are used for the surface and subsurface facilities vower. The vower distribution from 
the switchyard and switchgear facility is in underground concrete duct banks utilizing 
nonmetallic conduits. The cable raceway subsystem interfaces with the following surface and - 
subsurface systems: electrical power systems, electrical equipment, instrument, control systems, 
communication system, lighting subsystem, grounding subsystem, lightning protection 
subsystem, heat tracing subsystem and cathodic protection subsystem. 
1.2 LIMITATIONS OF THIS SYSTEM DESCRIPTION DOCUMENT 
As noted above, the electrical support system interfaces with the Electrical Power System 
that is described in a separate SDD. This SDD may include assumptions, preliminary 
information, and to be verified (TBV) values, as appropriate to the current level of design 
development. Additionally, requirements or descriptions that are stated as to be 
determined (TBD) or are expected at a later phase of the design will be described as such. 
At the time of approval of this version, the status of the design is that the conceptual 
design has been completed and the Title I preliminary design has been started. As the 
necessary design documents (calculations, drawings, specifications, and other supporting 
documents) are completed, the description of the system design will be updated. 
1.3 OWNERSHIP OF THIS SYSTEM DESIGN DOCUMENT 
The electrical support system SDD is owned by the Electrical and Control Systems group 
of Design and Engineering. 
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Electrical Support SDD 
2. OVERVIEW 
2.1 STRUCTURE, SYSTEM, OR COMPONENT FUNCTIONS 
The electrical support system is described as follows in F&OR Section 1.4.1.2-3 (Siddoway 
2003): 
"The repository shall provide the support system to maintain electrical power. 
The repository shall provide electrical support system such as: a. Lighting, 
b. Grounding, .c. Lightning Protection, d. Cathodic Protection, e. Heat Tracing, f. 
Cable Raceway" 
System functional requirements from the F&OR (Siddoway 2003) are contained in the subsection 
titles. The implementing performance/operational requirements are described in each subsection 
along with the requirement number of the F&OR (Siddoway 2003). 
2.1.1 Lighting 
2.1.1.1 The function of lighting is to provide the adequate level of illumination for (but not 
limited to): personnel safety, task lighting, yardloutdoor activities, daily activities within 
buildings, process areas, closed circuit television (CCTV) operations, and maintenance of 
repository (F&OR 1.4.1.2-3a, Siddoway 2003). Further, based on the lighting requirements 
during different operating modes, the lighting subsystem is divided into three subsystems: 
normal, essential, and emergency lighting subsystems as shown in the following. 
Normal Lighting: The function of the normal lighting system is to provide adequate level of 
illumination during normal operating mode. 
Essential Lighting: The function of the essential lighting system is to provide adequate level of 
illumination during total loss of off-site power sources (utility sources) by utilizing standby 
diesel generators. 
Emergency Lighting: The function of the emergency lighting system is to provide adequate level 
of illumination for the emergency functions during an off-normal event, or total loss of off-site 
power sources by utilizing emergency power sources. 
2.1.2 Grounding 
2.1.2.1 The grounding subsystem has the following functions (F&OR 1.4.1.2-3b, Siddoway 
2003): 
To assure that persons in the vicinity of grounded facilities are not exposed to the danger of 
critical electric shock under normal, and ground fault conditions. 
To provide means to carry maximum system ground fault, and lightning current to ground, 
thereby allowing protection systems to isolate faulted systems, protecting equipment from 
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Electrical Support SDD 
malfunction, and damage due to excessive voltages, and protecting the building/structure from 
lightning strikes. 
To provide a stable reference point for computer systems, test equipment, instrument, and control 
circuits. 
2.1.3 Lightning Protection 
2.1.3.1 The function of the lightning protection subsystem is to provide a designated low 
resist~ce ground path for the lightning current to protect life, electrical equipment, buildings, 
and elevated structures against damages caused by lightning strikes (F&OR 1.4.1.2-3c, Siddoway 
2003): 
I 2.1.4 Cathodic Protection 
2.1.4.1 The function of the cathodic protection subsystem is to inhibit corrosion of buried 
structures, such as underground pipes, tanks, etc. (F&OR 1.4.1.2-3d, Siddoway 2003): 
I 2.1.5 Heat Tracing 
2.1.5.1 The fimction of the electrical heat tracing subsystem is to provide freeze protection for 
liquid-filled piping, instrument sensing lines, and tanks that are susceptible to fieezing during the 
winter months (F&OR 1.4.1.2-3e, Siddoway 2003): 
I 2.1.6 Cable Raceway 
2.1.6.1 The function of the cable raceway subsystem is to provide physical support, and 
protection for electrical cables routed in the facility (F&OR 1.4.1.2-3f, Siddoway 2003): 
I 2.2 STRUCTURE, SYSTEM, OR COMPONENT CLASSIFICATION 
The electrical support system has been categorized as a non-safety-category (non-SC) SSC. 
This system consists of no SSCs important to safety (ITS) or natural, and engineered barriers that 
are important to waste isolation (ITWI). This system is in the non-SC. 
Additional information regarding system classification maybe found in Q-List (EiSC 2003 
[DIRS 165179]), Safety CIassification of SSCs, and Barriers (BSC 2004 [DIRS 169971]), and 
Prelirninaiy Nuclear Safety Design Bases for License Application (BSC 2003 [DIRS 165 1821). 
I 2.3 OPERATIONAL OVERVIEW 
I 2.3.1 Lighting Subsystem Operational Overview 
The lighting subsystem for the repository is subdivided into normal lighting, essential lighting, 
and emergency lighting. 
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The normal lighting system serves the general outside facility areas, roadways, parking lots, 
building offices, and other areas where loss of power does not have any impact on safety or 
production. Therefore, normal lighting system is powered from either utility sources, 230 kV, 
preferred source or 138 kV, alternative source, only. As a result, the loss of two utility sources 
will cause the normal lighting system to be out of service. 
The essential lighting system serves the process facilities, and areas that require lighting to 
prevent production loss, maintain normal operation or to achieve sustained system operations 
during loss of offsite power. Therefore, the essential lighting system is from either 
utility sources, 230 kV, preferred source or 138 kV, alternative source, and backed by standby 
diesel generators. This configuration allows essential lighting to be available upon loss of both 
utility sources. 
Emergency lighting system includes egress lighting system. Emergency lighting is provided in 
areas where illumination is required for emergency operations, and egress from the facility. 
Therefore, the emergency lighting system is powered from utility sources, 230 kV, preferred 
source or 138 kV, alternate source, and backed by emergency diesel generators, and a UPS 
system. Egress lighting provided in exit areas is further powered by self-contained dry battery 
packslinverters within each fixture, which turns on upon loss of 120 VAC. Therefore, egress 
lighting is not connected to emergency bus. The UPS system provides power for lighting in 
CCCF, and local control areas inside the facilities, critical closed circuit television (CCTV) area, 
switchyard, and main switchgear buildings, and radiation monitoring system that are needed 
during emergency operating conditions. This configuration provides maximum reliability for 
power supplied to the emergency lighting system. 
Please note that power backed by the diesel generator will result in momentary loss of light in the 
area. Therefore, if the area lighting cannot tolerate the momentary loss of light, then the UPS 
shall back the area lighting. 
2.3.2 Grounding Subsystem Operational Overview 
The ground grid system, and its extension to overall site grounding conductors reduce the 
intolerable levels of touch, and step potentials to safe tolerable levels of potentials during ground 
fault, and normal operating conditions, and thereby ensure that personnel, and operating 
equipment are safe from harmful, and destructive effects of high-ground potentials. The 
electrical system is grounded to limit transient over-voltages during a phase-to-ground short 
circuit, and provides a ground current return path to isolate faulted circuits. 
The equipment grounding system interconnects the non-current-carrying parts of all electrical 
equipment, and adjacent conductive material with the earth, and circuit neutrals. See Figure 2-1 
Equipment is grounded for the following reasons: 
To protect personnel from electric shocks 
To prevent damage to equipment 
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The instrumentkomputer grounding, although it also connects to the overall grounding 
subsystem, is kept separate, and insulated, until it connects to the grounding subsystem at one 
specific point to eliminate electrical noise problems on the power supply lines for instrument, 
and monitoring equipment, see Figure 2-1. 
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LROA: AM FENCE 
ihSl.2 I 
Nu 
I . INSTRUULNT GROUNO BUS SHALL BE CONNECTED TO GROUNDING ROD OR 
GROUP OF RODS AND SITE GROUNDING CONDUCTOR FOR THE SINGLE 
N POINT CROUNDIWC. 
0 
i? 2. AIR TERYIULL SHALL BE CONNECTED TO GRWNOlNE ROO AND 
SITE GROUNDING CONDUCTOR. 
3. OC RETURH R l l l TRLCXI SHILL NOT BE GROUNDED. 
Figure 2-1 Repository Grounding Requirements 

Electrical Support SDD 
2.3.3 Lightning Protection Subsystem Operational Overview 
Lightning current discharge through a higher resistance path to the ground can cause damage to 
surrounding areas and life due to the heat and mechanical forces generated during the passage of 
the lightning current discharge. Electrical conductors are virtually unaffected by either the heat 
or the mechanical forces when adequately sized to carry the expected current. Therefore, 
lightning protection is provided to buildings, and other outdoor elevated structures by installing 
air terminals or vertical lightning rods on top of the structures, and connecting them to the site 
grounding rods that are connected to the ground grid. The air terminals on top of the building 
are interconnected in a network pattern, and are connected down to the ground rods with a 
minimum of two down conductors. The lightning rods intercept the lightning strikes, and 
provide a designated path for the lightning current to dissipate to the ground grid, and thereby 
protect electrical equipment, buildings, and elevated structures against damages caused by 
lightning strikes, see Figure 2-1. 
2.3.4 Cathodic Protection Subsystem Operational Overview 
Cathodic protection is an effective electrical method of corrosion control on metallic structures 
exposed to an electrolyte, namely soils, and liquids. The system consists of components such as 
rectifiers, anodes, anode loop cables, terminal, and junction boxes, test stations, reference 
electrodes, and some bonding jumpers. See Figure 2-2. 
This system uses the direct current (DC) from the rectifiers powered at 480 VAC or 120 VAC. 
Corrosion protection is accomplished by forcing the metallic structure to act as a cathode. In this 
system of protection, positive (+) output of the rectifier is connected to the anode material where 
corrosion occurs, then the flow of current goes to the pipeline or metallic structure, and back to 
the negative terminal of the rectifier. The rectifier has adjustable voltage taps for adjustment to 
meet the required negative potential relative to a reference electrode. The potential requirement 
for corrosion control at structure is a negative between the structure, and a saturated coppercopper 
sulfate reference electrode in contact with the electrolyte. 
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Impressed Current System 
ANODE '-PROCTECTED CURRENT - 
REFERENCE AAlLA2d 
ELECTRODE 
2 s 
Figure 2-2 Basic Cathodic Protection 

Electrical Support SDD 
2.3.5 Heat Tracing Operational Ovewiew 
The heat trace svstem is nrovided to outdoor nines. instrument sense lines. and tanks that contain .. , 
liquids to keep these liquids above their freezing points. The system consists of heating elements, 
temperature sensing units, temperature controllers, system monitors, and an electrical power 
supply at 2081120 VAC, 3-phaie, 4-wire service. 
- 
Two types of heating elements are used: heat tracing cable elements used for pipes, and small 
tanks, and heater pads used for large tanks. Heat tracing cable is self-limiting, which means that 
the amount of heating current that the cable generates is dependent on the ambient temperature. 
Please note that the high temperature fluid systems, if any, may require the use of mineral 
insulated heat cable. The heater cables are secured to the pipes with polyester fiber or glass cloth 
adhesives. 
The heat tracing circuitry is divided into zones, and protected by separate circuit breakers for 
system isolation. The heat tracing subsystem monitors provide status, alarms locally at the panel, 
and remotely at the Central Control Center Facility (CCCF) to indicate normal circuit operation 
or sensing of off-normal conditions such as circuit power failure or loss of circuit continuity. 
2.3.6 Cable Raceway Subsystem Operational Ovewiew 
The cable raceway subsystem operates as a passive system. It is primarily used to provide 
physical protection, and routing of electrical power, and instrument cables routed from the power 
supply to the electrical loads, and of cables interconnecting control, and monitoring equipment. 
The system consists of metallic or nonmetallic conduits, enclosed or open cable trays, boxes, and 
underground concrete duct banks. Cable raceways are separated in accordance with the cable 
voltage levels, the cable functions by quality level, process requirements of redundancy, and 
cable routing in accordance with fire protection criteria. The exposed raceway system utilizes 
cable trays, and conduits, neatly arranged in a main distribution pattern, branching out to their 
individual loads, and equipment. The embedded raceway system consists of conduits embedded 
in building floors, walls, and in underground duct banks. The power from the switchyard is 
distributed to facilities by underground concrete duct banks, and overhead distribution lines. 
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3. REQUIREMENTS AND BASES 
All requirements referencing Preliminary Nuclear Safety Design Bases for License Application 
(BSC 2003 [DIRS 1651821) are classified as 10 CFR Part 63 requirements, and are located in 
Section 3.1.1.1. The remaining requirements, and associated bases are classified as External 
Compliance unless noted within the appropriate comment section. 
3.1 GENERAL REQUIREMENTS 
3.1.1 System Functional Requirements 
3.1.1.1 Safety Requirements 
Safety requirements in Section 3.1.1.1 are nuclear design bases from the Preclosure Safety 
Analysis. Other requirements that address safety issues such as personnel protection from 
process industrial hazards or nuclear criticality safety requirements are contained in the Special 
Requirements section or other topical section below. 
3.1.1.2 Environmental Requirements 
Specific environmental requirements for the facility have not been identified at this stage of the 
design. Environmental requirements for addressing land disturbance from facility construction, 
facility emissions, water use or pollution prevention requirements may be needed, and will be 
added to the SDD when these requirements are developed. See Sections 3.2.7.1, and 3.5.5.1 for 
additional Environmental Protection Program Requirements. 
3.1.1.3 Mission-Critical Requirements 
The electrical support system includes the following subsystems: 
Lighting 
Grounding 
Lightning protection 
Cathodic protection 
Heat tracing 
Cable raceway (including underground ducts). 
3.1.1.3.1 Lighting 
3.1.1.3.1.1 Requirements: The lighting subsystem shall consist of the normal, essential, and 
emergency lighting systems. The normal lighting shall be provided in areas where sudden loss 
of light does not have any impact on either safety or production. The essential lighting shall be 
provided in areas where sudden loss of light does have impact on production, and safety to 
personnel. Emergency lighting shall be provided in areas where manual operations, sustained 
system operations, and egress from the facilities are required during postulated emergencies. 
Supports Function 2.1.1. 
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Basis: Based on the functional requirements, lighting subsystem is divided into three subsystems to provide reliable 
lighting during all modes of facilities operations [PDC 4.3.1.2.11. 
3.1.1.3.1.2 Requirement: As a minimum, the lighting subsystem shall provide the illumination 
levels per the requirements of Illuminating Engineering Society of Northern America (IESNA) 
Lighting Handbook, Reference, and Application, 9'h edition (2000), ANSVIESNA standard 
RP-22-96, NFPA 70-2002. 
Basis: This requirement will ensure adequate illumination for all areas in the facility, and operations during all 
modes of facilities operations [PDC 4.3.1.2.21. 
3.1.1.3.2 Grounding 
3.1.1.3.2.1 Requirement: The ground grid shall be provided to protect the safety of site 
personnel, and the general public, systems, structures, buildings, and components during a 
system fault (short circuit), a lightning strike, or a system voltage surge. The ground grid shall 
be designed per the requirements of IEEE Std. 80-2000 to limit touch, and step potentials to safe 
under all ground fault conditions. The ground soil resistivity shall be measured per the 
requirements of IEEE Std. 81-1983. Supports Function 2.1.2. 
Basis: This requirement will provide adequate protection of site personnel, and the general public, systems, 
structures, buildings, and components during a system fault (short circuit), a lightning strike, or a systemvoltage 
surge in accordance with IEEE Std. 80-2000, IEEE Std. 142-1991, and IEEE Std. 81-1983 [PDC 4.3.1.4.31, 
3.1.1.3.2.2 Requirement:.The ground grid conductor, and grounding conductor shall he made of 
bare copper and shall be buried below the earth surface at no less than two, and a half feet deep. 
The grounding rods shall be of copper clad steel. Supports Function 2.1.2. 
Basis: The copper clad steel ground rods can be driven through the hard soil without damage. This rationale is 
based on the IEEE Std. 80-2000. The second rationale to install ground conductor below the earth surface at no less 
than two, and a half feet deep is based on the NFPA 70-2002 [PDC 4.3.1.4.41. 
3.1.1.3.2.3 Requirement: Electrical equipment, buildings steel structures, fence, and metal 
components shall he effectively grounded to the ground grid per the requirement of IEEE 
Std.142-1991 and NFPA 70-2002. Supports Function 2.1.2. 
Basis: Electrical equipment, buildings steel, and metal structures shall be effectively grounded for personnel safety, 
and protection of equipment, buildings, and structures. This rationale is based on the recommendations of IEEE Std. 
142-1991, andNFPA 70-2002 [PDC 4.3.1.4.51. 
3.1.1.3.2.4 Requirement: The grounding conductor for the instrument, digital systems, 
communication systems, and computer systems shall be kept separate, and insulated until it 
connects to the grounding subsystem at one specific point. Supports Function 2.1.2 
Basis: This requirement will mitigate electrical noise problems in computer systems, test equipment, instrument, and 
control circuits to prevent system malfunctions due to electrical noise on the line. This rationale is based on the 
recommendations of IEEE Std. 142-1991[PDC 4.3.1.4.61. 
3.1.1.3.3 Lightning Protection 
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3.1.1.3.3.1 Requirement: All buildings, outdoor elevated structures; electrical equipment, and 
electrical power transformers shall be protected with lightning arresters, and surge capacitors 
against damages caused by lightning strikes. Lightning protection subsystem shall be installed 
for all buildings, and outdoor elevated structures in accordance with the NFPA 780-2001, and 
UL 96A-2001 standards. Supports Function 2.1.3. 
Basis: Lightning protection is required to provide a designated low resistance path for the 
lighting current to dissipate to the ground harmlessly, and thereby protect life, equipment, 
buildings, and elevated outdoor structures against damages caused by lightning strikes [PDC 
4.3.1.5.1 andPDC4.3.1.5.21. 
3.1.1.3.4 Cathodic Protection 
3.1.1.3.4.1 Requirement: Cathodic protection subsystem shall be provided to mitigate 
underground metal corrosion for the underground metal piping systems, and tanks in contact 
with soil. Cathodic protection subsystem shall be designed per the requirements of NACE Std. 
RP0169-2002. Supports Function 2.1.4. 
Basis: Cathodic protection subsystem mitigates corrosion, and thereby increases the usefnl life of the existing 
underground metal piping systems, and tanks in contact with soil. Cathodic protection subsystem also prevents the 
premature failures of the underground metal piping systems, and tanks in contact with soil [PDC 4.3.1.6.11. 
3.1.1.3.5 Heat Tracing 
3.1.1.3.5.1 Requirement: Electrical heat tracing subsystem (freeze protection) is required for the 
liquid-filled piping, and instrumentation sensing lines that are subject to freezing to support 
continuous operation of liquid-filled piping, and instrumentation sensing lines. Electrical heat 
tracing (freeze protection) shall be provided per the requirements of the IEEE 515-1997. The 
system shall be operable for the outdoor temperature range as defined in PDC, section 6.1.1.5. 
The turn on, and turn off temperature settings of the heat tracing subsystem shall be based on the 
fluid properties, and characteristics of the pipe insulation. Supports Function 2.1.5. 
Basis: Electrical heat tracing subsystem (freeze protection) is needed for the continuous operation of liquid-filled 
piping, and instrumentation sensing lines [PDC 4.3.1.7.11. 
3.1.1.3.5.2 Requirement: In heat tracing circuit, ground leakage protection shall be employed, 
and configured to provide both local, and remote indication of a ground fault. Supports Function 
2.1.5. 
Basis: This is required for the safe operation of the heat tracing circuit by detecting ground leaks early. Timely 
detection prevents propagation to larger faults. This requirement is based on the common industry practice [PDC 
4.3.1.7.41. 
3.1.1.3.6 Cable Raceway 
3.1.1.3.6.1 Requirement: Depending on ways of exposure, raceways shall be divided into two 
major classes, exposed systems, and embedded systems. Exposed systems shall utilize cable tray 
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or conduit, arranged in a main distribution pattern branching out to serve individual equipment or 
devices. Embedded systems shall consist of conduit embedded in building floors (including 
trench), walls, and in underground duct banks. In-floor trenches and cable pits can be used as 
required in special cases. The cable raceway for 600 volts nominal or less shall be designed per 
the requirements of NFPA 7@2002, Chapter 3, and PDC. The cable raceway for the medium 
voltage system shall be designed by using PDC, industry standards such as IEEE, NEMA, and 
other applicable industry standards. Supports Function 2.1.6. 
Basis: The cable raceway shall be designed to provide adequate mechanical protection for cables, personnel safety, 
and safe facility operations. This is a common practice in industry [PDC 4.3.1.8.2.1]. 
3.1.1.3.6.2 Requirement: Only metallic type cable trays shall be used. Instrumentation trays 
shall have solid bottoms, and covers. Supports Function 2.1.6. 
Basis: The metallic type cable trays are selected for grounding cable tray's. This is a common practice in industry 
[PDC 4.3.1.8.2.51. 
3.1.1.3.6.3 Requirement; For the selected critical emergency redundant loads "A", and "B", 
cable raceway shall be separated, and routed from the emergency power systems A, and B via 
separate fire zones in accordance with the principles defined in NFPA 70-2002, Article 700.9. 
Supports Function 2.1.6. 
Basis: The electrical support is a non-ITS system. However, for the selected emergency redundant loads, physical 
separation of emergency power cables are required to prevent simultaneous loss of selected emergency loads due to 
a fue in the same fue zone or other hazards such as flooding, icing, and vandalism [PDC 4.3.1.8.11. 
3.1.1.4 General Requirements 
3.1.1.4.1 Heat Tracing 
3.1.1.4.1.1 Requirement: The heat tracing cable supply voltage shall be 120 VAC, 60 Hz. The 
incoming power at the primary side of power distribution transformer for the heat tracing 
subsystem shall be 480 VAC, 3-phase, 60 Hz. Supports Function 2.1.5. 
Basis: The 120 VAC, and 208 VAC are the most commonly accepted input voltage levels for the heat tracing 
subsystem in the industry [PDC 4.3.1.7.21. 
3.1.1.4.1.2 Requirement: The normal power shall be used to supply power to the heat tracing 
subsystem. Backup standby and emergency diesel generator power sources shall not be used to 
supply power to the heat tracing subsystem unless it is required for some specific process to 
support emergency operations in freezing weather. Supports Function 2.1.5. 
Basis: This requirement will reduce load on the diesel generators during power outages or emergency as loss of 
power to the heat tracing subsystem generally will not have any impact either on the operations or on the safety 
[PDC 4.3.1.7.31. 
3.1.1.4.2 Cable Raceway 
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3.1.1.4.2.1 Requirement: Tray lengths shall be provided as necessary to fit the design situation 
with the tray widths, and heights as listed below: Supports Function 2.1.6. 
12 in. wide by 4 in. high 
18 in. wide by 4 in. high 
24 in. wide by 4 in. high 
30 in. wide by 4 in. high 
36 in. wide by 4 in. high. 
Basis: The cable hay sizes are selected to standardize cable hay types [PDC 4.3.1.8.2.51. 
3.1.1.4.2.2 Requirement: In general, for areas using vertically stacked trays, the highest voltage 
cables shall occupy the highest position in the stack. Low voltage power cables in vertically 
stacked trays shall be located below medium voltage power cables. Control cables shall be 
located below low voltage power trays, and low voltage analog, and digital communication 
cables or fiber optic cables located below control cable trays. Tray systems for each voltage 
level application are installed from top to bottom order as shown in the following: 
15 kV cables 
5 kV cables 
Low voltage power AC, and DC-600 V cables 
High-level control signal or discrete odoff control cables (120 VAC, 125 VDC) 
Instrumentation cables (that is, low-level analog, and digital signal.) 
Communications cables. 
Basis: This is required because the higher voltage cables are more prone to start a f ~ e . In case of a fire, generated 
heat will flow above. This practice will prevent damaging lower voltage cables in case of fue generated in higher 
voltage cable trays. This is a common practice in industry [PDC 4.3.1.8.2.71. 
3.1.1.4.2.3 Requirement: Cables shall be routed in conduit, or in cable trays with conduit 
dropouts to the individual equipment, and devices. Underground duct banks shall be used 
between facilities, and outlying structures. Supports Function 2.1.6. 
Basis: This is a common practice in industry for the physical support, and protection of cables. The duct bank 
prevents exposure of cable routing in the open areas of the surface facility [PDC 4.3.1.8.2.21. 
3.1.1.4.2.4 Requirement: Power cable connections to loads in remote areas through rough 
mountainous surfaces shall be by overhead lines. Supports Function 2.1.6. 
Basis: This is required where the land is mountainous, and duct bank installation is not practical, or where distance 
involved cannot justify the high duct bank cost. Therefore, the overhead distribution lines are used for remote loads 
only when underground distribution is not a viable solution or it is too costly to implement [PDC 4.3.1.8.2.31. 
3.1.1.4.2.5 Requirement: A raceway designated for a single class of cables shall contain only 
cables of the same class. Cable trays containing low voltage instrumentation cables with very 
low current control signals shall provide protection against spurious signal sources. During fiber 
optic cable tray design, the minimum bend radius of fiber optic cable shall be taken into account. 
Supports Function 2.1.6. 
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Basis: This criterion is required to prevent signal, and noise interference between different classes of cables. This is 
a common practice inindustry. Protection of instrumentation cables is for prevention of equipment malfunctions 
due to noises mixed with normal signals [PDC 4.3.1.8.2.41. 
3.1.1.4.2.6 Requirement: Cable rated at 300 V may be routed in the same raceway as 600 V 
cable, and share the same enclosures (boxes), provided the maximum applied voltage of the 600 
V cable does not exceed 300 V. Supports Function 2.1.6. 
Basis: This is required to prevent the mixing of 120 V low power or control circuit cables rated 300 V or below with 
600 V class power cables normally carrying a higher amount of power at 480 V. This is a common practice in 
industry to achieve a reliable power system [PDC 4.3.1.8.2.81. 
3.1.1.4.2.7 Requirement: Conduit for power, lighting, instrumentation, and all indoor exposed 
conduit shall be rigid, galvanized steel. Lighting subsystem may use electrical metal tubing for 
concealed work in non-hazardous areas, such as offices, and control rooms. Generally, PVC 
conduits shall be used for underground duct banks, except PVC-coated rigid, galvanized steel 
shall be used under heavy traffic areas. The minimum bend radius of fiber optic cable shall be 
reviewed during conduit design. Supports Function 2.1.6. 
Basis: This is a commonpractice in industry for a reliable, and long lasting raceway installation [PDC 4.3.1.8.2.91. 
3.1.1.4.2.8 ~e~uirement: For underground installation, concrete encased underground duct 
banks, and manhole systems shall be installed throughout the site for the pulling, and protection 
of power, control, and instrumentation cables. Twenty percent conduit spare capacity shall be 
provided for underground duct banks. Supports Function 2.1.6. 
Basis: This criterion is used to facilitate the cable routing between buildings or facilities. This is a common practice 
in industry for a reliable power distribution system[PDC 4.3.1.9.11. 
3.1.1.4.2.9 Requirement: Manholes, and pull points shall be used as required to facilitate cable 
pulling, and inspection. Their sizes, and locations shall depend on associated duct banks, type, 
and sizes of the cables to be installed, and shall be shown on the layout drawings. The maximum 
distance between manholes, and pull points shall be as allowed by the National Electric Code 
(NEC). Manholes, and pull points shall be provided with appropriate drainage. Copper 
grounding pad shall be provided in each manholes. Supports Function 2.1.6. 
Basis: This is required to facilitate cable pulling activities. Grounding requirement is for the protection of personnel, 
and equipment against electric hazard. This is a common practice in industry for a reliable manhole installation 
[PDC 4.3.1.9.31. 
3.1.2 Subsystem, and Major Components 
The electrical support system is a title, and therefore, does not have any subsystems. Six systems 
are grouped together under the title of electrical support system, and each one of the system has 
its own specific function in ensuring the availability of the electrical power at all times for the 
repository. Therefore, these systems are described under Section 4.1 .l, "Description of System, 
Subsystems, and Major Components". 
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3.1.3 Boundaries, and Interfaces 
The electrical support system interfaces with: 
All facilities, and their housed systems to provide support for the electrical power 
0 The underground metal piping systems, and tanks in contact with soil for cathodic 
protection 
0 The liquid-filled piping, and instrumentation sensing lines that are subject to freezing. 
The electrical support system interfaces with the electrical power system. This latter system 
provides requirements for normal. power, standby power, and emergency power. There are no 
other system boundary requirements that must be accounted for in the design of the system. 
3.1.4 Codes, Standards, and Regulations 
Codes, standards, and regulations that apply to the electrical power system are contained in the 
PDC (Doraswamy 2004) in the following sections: 
0 Section 4.3.1 - general design criteria 
Section 4.3.6 - electrical support system: codes and standards. 
3.1.5 Operability 
The electrical support system is non-SC, and therefore is not subject to Technical Safety 
Requirements. Therefore there are no operability requirements for the system. 
3.2 SPECIAL REQUIREMENTS AND BASES 
Hazards Analyses are not yet complete, but are assumed to be potentially applicable. This 
section will be updated for each hazard with information on applieability/non-applicability, 
mitigating, and fail-safe performance requirements, environments, monitoring, alarms, and 
interfaces. See the Preliminary Hazards Analysis for License Application, (BSC 2004 [DIRS 
1673131) for additional information. 
3.2.1 Radiation, and Other Hazards 
3.2.1.1 Requirement: The electrical support system components shall be hardened or properly 
shielded to withstand, and operate under the radiation levels in which they are installed 
commensurate with the performance basis of the equipment. 
Basis: The requirement ensures that the system components will perform their intended functions. [PDC 4.9.3.51 
3.2.2 As Low as is Reasonably Achievable 
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3.2.2.1 Requirement: The electrical support system components shall he located, andlor 
shielded to minimize exposure to meet as low as is reasonably achievable (ALARA) principles. 
Basis: This requirement will minimize personnel exposure. [PDC 4.9.3.3].\ 
3.2.3 Nuclear Criticality Safety 
3.2.3.1 Requirement: The electrical support system shall he designed so that it does not initiate 
a credible criticality event. 
Basis: Nuclear facility safety standards seek to prevent unplanned nuclear criticality events, and protect workers, 
and environment from potentially harmful exposures. This requirement will ensure that the above goal is met. [PDC 
4.9.2.2.11 
3.2.4 Industrial Hazards 
There are no requirements currently identified to address industrial hazards in the design of this 
system. As the design matures, requirements for addressing industrial hazards will be 
established as needed. 
3.2.5 Operating Environment, and Natural Phenomena 
3.2.5.1 Normal Environment 
The requirements for the normal environment are addressed in PDC section 6.1.1. 
3.2.5.2 Earthquake 
3.2.5.2.1 Requirement: The electrical support systems for the emergency power system 
equipment shall be seismically designed for the 1000-year earthquake. Acceptability of passive 
equipment such as cable trays, and supports will be verified by analysis. 
Basis: This requirement is to ensure that the electrical support systems for the emergency electrical power system 
are available after a seismic event. (Preliminary Hazards Analysis for License Application. [BSC 2004, DIRS 
1673131) 
3.2.5.3 Tornado, Extreme Winds, Rainstorm 
3.2.5.3.1 Requirement: The electrical support systems for the emergency electrical power 
system shall include provisions that assure that system will be functional under conditions such 
as high winds, rainstorm, or tornadoes. 
Basis: This requirement is based on good engineering practice, and operational experience. 
3.2.5.4 Flooding 
3.2.5.4.1 Requirement: The electrical support system component shall be installed in a manner 
that will prevent any impact due to flooding. 
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Basis: This requirement is necessary to prevent power outages, and damages to electrical power system due to 
flooding. 
3.2.6 Human Interface Requirements 
The electrical support system is non-SC, and therefore does not require any alarms, indicators or 
controls for manual safety functions. Therefore there are no human interface requirements for 
the system design currently needed. As system design evolves and system operations documents 
are developed, design requirements to assure appropriate human interface with the system may 
be needed. 
I 3.2.7 Specific Commitments 
3.2.7.1 Requirement: The repository shall be designed with pollution prevention systems to 
control air emissions, and effluents, minimize water use, and reduce or eliminate discharges to 
the environment. 
Basis: The design shall comply with applicable environmental requirements set forth by federal and state 
regulations, Executive Orders, and DOE Directives, and requirements derived from environmental permits and 
corresponding permit conditions. [PDC 4.1 .I .9] 
I 3.3 ENGINEERING DESIGN REQUIREMENTS AND BASES 
I 3.3.1 Civil, and Structural 
I See Section 3.2.5.2.1, Earthquake 
3.3.1.1 Requirement: All support for the electrical duct banks shall be designed per the 
requirement of PDC Section 4.2.1.3.9. 
I Basis: This criterion is required to protect the integrity of electrical duct bank installation. 
I 3.3.2 Mechanical, and Materials 
The electrical support system is comprised of standard, commercial grade components, and no 
special design requirements are needed for mechanical or material engineering of the system. 
I 3.3.3 Chemical, and Process 
I There are no chemical, and process requirements for the design of the electrical support system. 
I 3.3.4 Electrical Power 
3.3.4.1 Requirement: The following subsystems of the electrical support system will need AC 
power as shown below: 
Lighting subsystem - 4801277 VAC or 2081120 VAC, 3-phase, 4-wire service required 
from the preferred 230 kV off-site source, backed by a 138 kV off-site alternate utility 
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power source, standby, and emergency diesel generators, and a non-emergency, and 
emergency UPS system. 
Cathodic Protection - Powered from normal power source, 480 VAC or 120 VAC. 
Heat Tracing - Powered from normal power source, 2081120 VAC, 3-phase, 4-wire 
service. 
Basis: This requirement is based on good engineering practice. 
3.3.5 Instrumentation, and Control 
The detailed information for instrumentation, and engineering control requirements for the 
electric support systems will be updated in future revisions as the design evolves. 
3.3.6 Computer Hardware, and Software 
There is no computer hardware, and software requirements currently established for the electrical 
support system. As the repository design matures, the engineering requirements for the computer 
hardware, and software systems will be developed for this section. At present, engineering is 
planning to use the following computer programs per BSC requirements: 
Bechtel Corporation SETROUTE program for the cable raceway subsystem 
SETROUTE program is capable of linking equipment, raceway, and cable. It is also 
capable of providing a qualified database that may be used to route cable, track 
inventory of equipment, cable, and raceway. This program is used to develop cable pull 
tickets, and for the design, and installation of the cable raceway subsystem. 
ETAP, Powerstation for the design of ground grid. 
3.3.7 Fire Protection 
Fire protection requirements for the design of the system are tied to the facility that houses the 
system's components and brush clearance requirements for duct banks that are not in facilities, or 
overhead lines. These requirements are found in Site Fire Hazards Analyses (BSC 2004 [DIRS 
168149]), and Subsurface Repositoly Fire Hazards Analysis (BSC 2004 [DIRS 1687261). 
3.4 TESTING, AND MAINTENANCE REQUIREMENTS AND BASES 
3.4.1 Testability 
The electrical support system contains standard commercial components. System design does 
not necessitate unique design requirements for testability. 
3.4.2 Technical Safety Requirement-Required Surveillances 
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The electrical support system is non-SC, and will not be subject to Technical Safety Requirement 
(TSR)-required surveillances. 
3.4.3 Non-Technical Safety Requirement Inspections, and Testing 
The electrical support system contains standard commercial components. These do not require 
special non-TSR inspections, and testing that will necessitate unique design requirements. A test 
program for the system will be developed using manufacturer's recommendations as guidance. 
3.4.4 Maintenance 
The electrical support system maintenance activities, to comply with the manufacturer's 
recommendations, will be developed as needed. 
3.5 OTHER REQUIREMENTS AND BASES 
3.5.1 Security, and Special Nuclear Material Protection 
Security, and special nuclear material (SNM) protection requirements for the electrical power 
system design will be developed if required. 
3.5.2 Special Installation Requirements 
The electrical support system contains standard commercial components. These will be installed 
according to the manufacturer's instructions. Minimum required working clearances would be in 
accordance with NEC standards and National Electric Safety Code. 
3.5.3 Reliability, Availability, and Preferred Failure Modes 
There are no unique requirements for system reliability or availability. The electrical support 
system mission requirements are contained in Section 3.1.1.3. For lighting subsystem, these 
include the use of preferred, and alternate utility supplies, the standby, and emergency power 
subsystems, and UPS. The electrical support system is non-SC, and therefore does not have a 
preferred failure mode. The reliability for the cathodic protection, and heat tracing subsystems 
will depend on the reliability of the utility supplies. 
3.5.4 Quality Assurance 
The electrical support system is non-SC, and is not subject to the requirements of the quality 
assurance program described in Quality Assurance Requirements, and Description (DOE 2004). 
3.5.5 Miscellaneous 
No system requirements have been identified for this section. 
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4. SYSTEM DESCRIPTION 
4.1 CONFIGURATION INFORMATION 
4.1.1 Description of System, Subsystems, and Major Components 
> 
The electrical support system is comprised of six subsystems involved in ensuring that the 
electrical power system, and facility process for the repository are operable at all times as 
designed. Although they are grouped together as one support system, each one of these 
subsystems has its own specific function in providing the electrical power required for the 
operation of the facility. 
The electrical support system components are capable of performing their intended function for 
their intended lifetime in the radiation field they are located. This capability is provided through 
shielding or hardening of the equipment or planned replacement of components, if needed. 
The electrical support system includes the following subsystems: 
Lighting 
Grounding 
Lightning protection 
Cathodic protection 
Heat traceing 
Cable raceway 
4.1.1.1 Description of Lighting Subsystem 
The lighting subsystem designed for the repository facilities is a reliable system. It provides 
comfort to the users, especially in the area of CCTV, laboratory, and control room. The lighting 
subsystem is designed to be at least consistent with the illumination requirements of PDC 
[4.3.1.2.1, and 4.3.1.2.21, IESNA Lighting Handbook-2000, 91h Edition (Rea, M. S. 2000), 
ANSVIESNA RP-22-96 1996, and the NFPA 7C2002 [3.1.1.3.1.1, and 3.1.1.3.1.21. 
The lighting subsystem for the repository is subdivided into normal lighting, essential lighting, 
and emergency lighting. The lighting subsystem uses 4801277 VAC or 2081120 VAC power. 
Normal lighting is provided in areas such as roadways, parking areas, general building areas, and 
other general outdoor areas where extended loss of light does not impact personnel safety or 
production. Normal lighting is powered from either of the two off-site utility sources: 230 kV, 
the preferred source, or 138 kV, the alternate source. As a result, outage of both utility sources 
will cause the normal lighting subsystem to be out of service. However, these outages will not 
have any adverse impact where normal lighting is provided. 
Essential lighting is provided in areas where repository operations, and processes are required to 
maintain sustained operation that cannot tolerate long periods of loss of light due to outages of 
both off-site utility sources. Therefore, essential lighting is powered from either of the two offsite 
utility sources, the 230 kV source as the preferred source, or the138 kV as the alternate 
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source, and from backup standby diesel generators. This configuration will prevent long periods 
of loss of light where essential lighting is required due to outages of both off-site utility sources. 
Emergency lighting includes egress lighting. Emergency lighting is provided where extended 
loss of light cannot be tolerated due to personnel safety, and for sustained operations in areas 
such as the Central Control Center Facility (CCCF), CCTV, local control panels, monitors, and 
waste package process facilities due to total loss of off-site power. Upon loss of off-site 230 kV, 
and 138 kV power sources, the emergency lighting subsystem receives its 2081120 VAC power 
from 4.16 kV emergency diesel generators system for the lighting area that can tolerate 
momentary loss of light, and a UPS system for the lighting area that cannot tolerate momentary 
loss of light. The UPS system provides power for emergency lighting in CCCF, and facility 
control room areas, critical CCTV areas, 4.16 kV switchgear facility, and radiation monitoring 
areas that are needed during emergency operating conditions. Egress lighting is provided in 
stairways, exit routes, fire alarm stations, stations in ventilation shafts used for emergency 
egress, subsurface ramps, and for exit signs for surface facilities, and subsurface tunnels. Egress 
lighting is powered by self-contained dry battery packslinverters within each fixture that turns 
light on upon loss of 120 VAC. Therefore, egress lighting is not connected to emergency bus. 
The lighting subsystem design is in its preliminary stage. The design information for the lighting 
subsystem will be updated in future revisions as the design evolves. 
4.1.1.2 Description of Grounding Subsystem 
The ground grid system is comprised of a network of buried, embedded, or exposed bare copper 
cables with grounding rods that are interconnected to form a grid to which all electrical 
equipment, and system ground, building, and structure steel, buried or exposed, are connected. 
The ground grid is located in the 230kVl138 kV switchyard. 
The ground grid is designed per the requirements of the IEEE Standard 80-2000 to obtain safe 
touch, and step potentials. The ground conductor is sized to cany maximum system ground fault 
current in accordance with NFPA 70-2002. The power system grounding is based on the 
following criteria [PDC 4.3.1.4.71: 
0 12.47 kV system: This system shall be grounded through a resistor to limit damaging 
ground fault current to a value adequate for relay operation (low resistance grounding) 
4.16 kV system: This system shall be grounded through a resistor to limit damaging 
ground fault current to a value adequate for relay operation (low resistance grounding) 
480Yl277 V system: The system neutral point shall be solidly grounded to the ground 
grid 
208Yl120 V (including UPS): The system neutral point shall be solidly grounded to the 
ground grid 
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125 VDC system: Ungrounded 
0 DC retum rail tracks: Ungrounded, 
Equipment is grounded per the requirements of the IEEE Standard 142-1991, and NFPA 70- 
2002. Equipment grounding connects all non-cnrrent carrying parts of all electrical equipment, 
metallic structures, and electrical raceways to the ground grid [3.1.1.3.2.3]. Equipment 
grounding is provided to equalize the ground potential between the equipment, and the ground 
grid. The equipment ground conductor can be a bare or insulated conductor or bus bar, metal 
raceway, metal cable sheath, or any combination of the above. 
The instrument grounding system consists of insulated ground busses interconnected with 
insulated cables to form a radial system. The instrument grounding, although it also connects to 
the overall grounding subsystem, is kept separate, and insulated, until it connects to the 
grounding subsystem at one specific point to eliminate electrical noise problems on the power 
supply lines for instrument, and monitoring equipment, see Figure 2-1. All instrumentation 
equipment such as analog, and digital equipment cabinets, computer cabinets, and annunciator 
cabinets are supplied with a signal grounding bus insulated from the metal cabinet, and the 
cabinet grounding bus. Separate analog, and digital grounds are maintained up to the main 
instrument signal grounding bus. The main instrument signal ground bus is provided with two 
separate groupings of ground connections: analog signal ground, and digital signal ground. The 
isolated ground bus is connected to the ground grid electrodes through a test switch link 
[3.1.1.3.2.4]. SeeFigure2-1. 
The perimeter fencing within the ground grid area is grounded. Fence posts within the ground 
grid area are grounded at alternate intermediate posts. Under-ground duct banks are embedded 
the entire length of the duct banks, located as close as possible to the top center of the duct bank. 
Duct bank ground conductors are connected to all other ground conductors in manholes, and 
hand-holes. 
All railway tracks within the facility area are connected to the ground grid. Rail splice jumpers 
are required for ground continuity. The first rail sections on each rail outside the ground grid 
area have insulating joints on both ends. Please note that DC return rail tracks shall not be 
grounded. 
Buildings are grounded by connecting every other building column directly to the ground grid. 
Ground connection to the column is made by exothermic process above the finished floor 
elevation. All other exposed or accessible indoor grounding connections are made with 
compression connectors. 
The overall grounding subsystem is a single grounding network, which interconnects all the 
repository facilities: North Portal, South Portal, North Construction Portal, balance of plant, 
ventilation system areas, subsurface facilities. The ground grid connects to the rest of the 
surface, and subsurface repository grounding conductors, and grounding rods. 
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At present, the ground grid design is in a preliminary stage. The detailed design information will 
be updated in future revisions as the design evolves. 
4.1.1.3 Description of Lightning Protection Subsystem 
The lightning protection subsystem is designed per the requirements of NFPA Standard 7 8 6 
2001, and UL 96A-2001 to provide a reliable designated low resistance path for carrying 
lightning current to the ground harmlessly, and thereby protect electrical equipment, buildings, 
and elevated structures against damages caused by lightning strikes, see Figure 2-1. 
A lightning protection subsystem is made up of following components. 
Air Terminals: Inconspicuous slender rods installed on top of the roof at regular intervals. 
Conductors: Aluminum or copper cables that interconnect the air terminals, and the other system 
components. 
Ground Terminations: Metal rods driven into the earth to guide the lightning current harmlessly 
to ground. 
Surge Arrestors, and Suppressors: Devices that are installed in conjunction with a lightning 
protection system to protect electrical wiring, and electronic systems, and equipment. 
Lightning protection to buildings, and other elevated outdoor structures is provided by installing 
strike termination devices such as air terminals or vertical rods located above the structures, and 
a conductor system connecting them to ground rods that are, in turn, connected to the ground grid 
terminals per the installation requirements of the UL 96A-2001. The down conductors serve as 
the low impedance path to ground to allow lightning strikes to discharge to earth with minimal 
damage to facilities. 
All outdoor metal tanks, and metal silos are bonded to the ground grid through their foundation 
reinforcement bars. 
Surge protection for the electrical system, and equipment is essentially the same as the lightning 
protection system. The proper operation of the surge protective devices depends on limiting the 
low surge impedance path to ground for impulse-type over-voltages occurring on the power 
system. 
At this time, the lightning protection design is in its preliminary design stage. The design 
information for the lightning protection will he updated in future revisions as the design evolves. 
4.1.1.4 Description of Cathodic Protection Subsystem 
Cathodic protection subsystem is designed to control external corrosion on the metallic pipes, 
tanks, and structures buried, or in contact with ground per the requirements of NACE Std. 
RP0169-2002 to obtain a reliable system. The system consists of components such as rectifiers, 
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anodes, anode loop cables, terminal, and junction boxes, test stations, reference electrodes, and 
some bonding jumpers. See Figure 2-2. 
The impressed current type cathodic protection subsystem mitigates the effects of corrosion by 
forcing all areas of a metallic structure to become a cathode. This is accomplished by the flow of 
current from the anode ground bed to the pipeline or metallic structure, and back to the negative 
terminal of the rectifier. The rectifier has adjustable voltage taps for adjustment of the negative 
polarization of the pipe. The potential requirement for inhibiting corrosion is a negative potential 
as measured between the structure, and a saturated copper-copper sulfate reference electrode in 
contact with the electrolyte. 
The impressed current type cathodic protection subsystem utilizes DC current provided by a 
rectifier powered from the site normal 120 VAC or 480 VAC power system. Impressed current 
anodes can be of materials such as graphite, high-silicon cast iron, lead-silver alloy, precious 
metals, or steel. These anodes are connected with an insulated cable, either individually or in 
groups, to the positive terminal of a DC source, such as a rectifier. The pipeline or structure is 
connected to the negative terminal of the DC source. 
The environmental conditions, and the physical layout of the pipes, and other structures 
determine the type, location, spacing, and total number of anodes required. Based on the 
calculation, anodes are spaced at optimum distances from each other, and from the protected 
pipes or structures. Anodes are installed vertically or horizontally adjacent to the pipes, and 
other structures, and interconnected by use of an anode header cable, and an anode loop cable. 
Anode shunt terminal boxes are provided near underground tanks to permit ampere output testing 
of each anode. Anode junction boxes are used elsewhere to permit continuity testing of the 
anode header, and anode loop cables. 
Pipe or structure test stations are provided to permit testing of both protected, and non-protected 
underground pipes, and structures. For pipes, the test stations are located strategically along the 
pipelines, and installed where protected pipes cross non-protected pipes, and also at valve pits. 
Each test station includes a minimum of one permanent underground reference electrode located 
below the pipeline. Leads from the reference electrode, and leads that have been exothermically 
welded to the rives. and other structures are extended to terminals within the test station. , 
Bonding jumpers are provided to interconnect all underground metallic piping, and other metallic 
structures to eliminate stray currents. Potentials are measured periodically, using these test 
stations, to determine the effectiveness of the cathodic protection system.- 
At this time, the cathodic protection design is in its conceptual stage. The design information for 
the cathodic protection subsystem will be updated in future revisions as the design evolves. 
4.1.1.5 Description of Heat Tracing Subsystem 
The heat tracing subsystem is designed to keep liquid filled pipes, instrument sensing lines, and 
tanks operable for an outdoor temperature range as defined in the PDC section 6.1.1.5, ambient 
temperature. The heat tracing subsystem is designed per the requirements of the IEEE 515-1997, 
and NFPA 70-2002 to obtain a reliable system. The heat tracing subsystem is made up of four 
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major parts: heating elements, a temperature sensing unit, a temperature controller, and an 
electrical circuit supply. 
Heating elements are used to keep the liquid above its freezing point. Two types of heating 
elements are used. First, there is the heat tracing cable element used for pipes, and small tanks, 
and second, the heater pads or heating panels used for large tanks. The heat tracing cables are 
self-limiting, power limiting, constant wattage, flexible, series resistance cables. The heater 
cables are secured to the piping with polyester fiber or glass cloth adhesive tape, and bent to 
conform to the contour of the pipe or flange. Heating pads are used for large tanks where 
parallel heat tracing cables are unable to maintain sufficient heating due to the large surface area 
of the tank. 
The temperature-sensing units used are thermostats, and resistance temperature detectors. 
Ambient sensing thermostats are used for water utilities, and noncombustible liquid chemicals. 
Resistance temperature detectors are used for diesel fuel lines for winterizing, and are placed 
against the pipe wall to sense the temperature. Dedicated temperature controllers are used for 
heat tracing. Temperature controllers control the operation of the heating element. 
The electrical supply for the heat tracing subsystem is 2081120 VAC, 3-phase, 4-wire service. 
The heat tracing circuitry is divided into zones, and protected by circuit breakers, and contactors 
for separate system isolation. In heat tracing circuit, ground leakage protection is employed to 
provide both local, and remote indication of a ground fault. The detection will enable prevention 
of larger faults. 
At this time, the heat trace design is in its conceptual stage. The design information for the heat 
trace system will be updated in future revisions as the design evolves. 
4.1.1.6 Description of Cable Raceway Subsystem 
The cable raceway subsystem designed for the repository is a reliable, and robust system. The 
cable raceway for 600 volts nominal or less is designed per the requirements of NFPA 70-2002, 
Chapter 3, and PDC. The cable raceway for the medium voltage system is designed using 
electrical criteria from PDC, and industry standards such as IEEE, NEMA, and other applicable 
industry standards. The cable raceway supports for the emergency power system is designed per 
the requirements of Section 3.2.5.2.1. 
The cable raceway subsystems are divided into two major classes: exposed system, and 
embedded system. Exposed system utilizes cable tray or conduit, arranged in a main distribution 
pattern branching out to serve individual equipment or device. Embedded raceway system 
consists of conduit embedded in building floors, including trench, walls, and underground duct 
banks with manholes, and hand-holes. In order to maintain separation, and sustain orderly 
installation, quite often cable trays are installed inside the manholes. 
The cable raceway subsystems are physically separated in accordance with the function, and 
voltage class of the cables, i.e., 15 kV cables, 5 kV cables, AC, and DC 600 V cables, 120 VAC, 
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and 125 V DC cables, emergency control cables, low level analog signals, digital data, and fire 
detection cables as well as specialty cable, or Fiber Optics. 
In areas where raceway systems require stacked trays, the cables with higher voltage level 
occupy the highest position in the stack. Control cables are located below low voltage power 
trays, and low voltage analog, digital, and fiber optic cables are located below control cable 
trays. Tray systems for each voltage level application are installed from top to bottom order as 
shown below: 
15 kV cables 
5 kV cables 
Low voltage power AC, and DC-600 V cables 
High-level control signal or discrete odoff control cables (120 VAC, 125 VDC) 
Instrumentation cables (that is, low-level analog, and digital signal.) 
Communications cables. 
The electrical support is a non-ITS system. However, for the selected critical emergency 
redundant loads "A", and "B, cable raceways from the emergency power systems A, and B are 
separated from each other, and routed via separate fire zones in accordance with the principles 
defined in NFPA 70-2002, Article 700.9. This configuration will prevent simultaneous loss of 
redundant emergency loads due to a fire in a fire zone, or other hazards such as flooding, icing, 
and vandalism. Cables associated with each emergency power system load group are run in 
separate conduits, cable trays, or ducts. 
To date, detailed equipment layout is being developed to support the design of the Fuel 
Handling, and Canister Handling Facilities. The conceptual raceway system design for the 
subsurface Motor Control Centers, and Load Centers including manholes/raiser transition is on 
the verge of completion. Further, the conceptual raceway system design for the subsurface 
exhaust fans are in the process of completion. The design information for the raceway system 
will be updated in future revisions as the design evolves. 
4.1.2 Electrical Support System Boundaries, and Interfaces 
The electrical support system boundaries, and interfaces include those breakers that route power 
to various plant systems, except for grounding subsystem. The grounding subsystem provides 
interface to the electric power supply by providing a low resistance path to the grounding 
subsystem. 
4.1.2.1 Lighting Subsystem Boundaries, and Interfaces 
The lighting subsystem boundary starts at the switchyard in the North Portal, including the 
outdoor lighting for the fenced perimeter, and parking areas. The lighting boundary extends to 
the outlying areas in the South Portal, which includes the construction area, the ventilation shafts 
area, and the railroad facility area. 
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4.1.2.2 Grounding Subsystem Boundaries, and Interfaces 
As with most of the electrical support systems, the grounding subsystem interfaces start at the 
switchyard, and terminate at the outermost location of the repository where electrical power is 
connected. 
4.1.2.3 Lightning Protection Subsystem Boundaries, and Interfaces 
The lightning protection subsystem boundary starts at the switchyard, and terminates at the 
farthest elevated structures of the repository that requires protection from lightning strikes. 
I 4.1.2.4 Cathodic Protection Subsystem Boundaries, and Interfaces 
The cathodic protection subsystem boundary starts at the switchyard, and terminates at the 
outermost structure of the repository where metallic equipment or structure is in contact with the 
ground. 
I 4.1.2.5 Heat Tracing Subsystem Boundaries, and Interfaces 
I Heat trace system boundary starts from the Dry Transfer Facility where any of the process piping 
extends outdoors, and requires protection from freezing temperatures. 
4.1.2.6 Cable Raceway Subsystem Boundaries, and Interfaces 
The cable raceway subsystem boundary starts at the switchyard, and terminates at the farthest 
location of the repository to service all loads, instrumentation, and control devices that requires 
electrical cables. 
4.1.3 Physical Locations, and Layout 
The ground grid is located inside the 138-kVl230 kV switchyard located at the southwest comer 
of the North Portal facility. 
No other physical locations or layout description have been identified at this time. 
4.1.4 Principles of Operation 
4.1.4.1 Lighting 
The lighting subsystem provides the required illumination levels in various areas of the 
repository through operation of light switches, breakers, and other various sensing devices 
(photo, motion, etc.). The system requires a * 10% of the nominal voltage rating to maintain 
acceptable illumination levels. 
4.1.4.2 Grounding 
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During phase to ground fault, the grounding subsystem provides low resistance ground return 
path to facility ground grid to dissipate fault currents into the earth without exceeding any 
operating, and equipment limits, and assure that personnel in the vicinity of grounded facility is 
not exposed to the danger of critical electric shock by keeping touch, and step potentials to safe 
levels. 
4.1.4.3 Lightning Protection 
The lightning protection subsystem operates by intercepting lightning strikes at rods installed on 
building roofs, and provides a designated ground path for the lightning current to dissipate to the 
ground grid, and thereby, protect electrical equipment, buildings, and elevated structures against 
damages caused by lightning strikes. 
4.1.4.4 Cathodic Protection 
The output of each cathodic protection rectifier is connected across the anode ground bed, and 
the underground pipes or other structures to be protected. The cathodic protection subsystem 
operates by allowing flow of current from the anode ground bed to the pipeline or metallic 
structure, and then back to the negative terminal of the rectifier by maintaining a negative 
potential between the pipe or structure, and a saturated copper-copper sulfate reference electrode 
in contact with the electrolyte. 
4.1.4.5 Heat Tracing 
The heat trace system provides freeze protection for liquid-filled piping, instrument sensing 
lines, and small tanks that would be susceptible to freezing during the winter months by using a 
self-limiting heating cable, or electrical heating element, around the pipe or sensing line. As the 
heating cable is self-limiting, the heat output regulates temperature to ambient conditions at each 
point of the cable. As a result, it never overheats or bums out-even when overlapped on itself. 
In snow, and icy water, the self-limiting heating cable operates at full power. As the snow melts, 
and the water drains away, self-limiting heating cable self-regulates to half while it dries. 
As it gets warmer, the self-limiting heating cable gradually reduces its heat output. Tank 
heating pads are used when high wattage density is required. These tank-heating pads provide 
heat to selected areas on the tank. The heat is then distributed through convection in the fluid. 
The tank heating pads have a constant power output, and use sealed, self-resetting thermostat to 
regulate liquid temperature. 
4.1.4.6 Cable Raceway 
The cable raceway subsystem is a passive system. It is primarily used to provide physical 
protection, and routing of electrical power, and instrument cables routed from the power supply 
to the electrical loads, and of cables interconnecting control, and monitoring equipment. 
4.1.5 System, and Subsystem Reliability Features 
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The provisions of reliability requirements are based on the final system configuration, and 
hardware information. A review of these considerations will establish reliability requirements 
for this section. No reliability requirements have been identified at this time. 
4.1.6 System, and Subsystem Control Features 
The detailed information for the control logic diagrams, indications, alarm, and control features 
for the electric support systems will be updated in future revisions as the design evolves. 
4.2 OPERATIONS 
As the repository design matures, the good operations practices for the electrical support systems 
will be identified in this section. 
4.2.1 Initial Configuration (Pre-startup) 
The requirement of pre-startup requirements is based on the final system configuration. A review 
of these considerations will establish the pre-startup requirements. No pre-startup requirements 
have been identified at this time. 
4.2.2 System, and Subsystem Startup 
The requirement of startup requirements is based on the final system configuration. A review of 
these considerations will establish startup requirements. No startup requirements have been 
identified at this time. 
4.2.3 Normal Operations 
The description of normal operating mode for the electrical support systems will be based on the 
final system configuration. A review of these considerations will establish normal operating 
mode. 
4.2.4 Off-Normal Operations 
The description of off-normal operating mode for the electrical support systems will be based on 
the final system configuration. A review of these considerations will establish off-normal 
operating mode. 
4.2.5 System, and Subsystem Shutdown 
The description of system, and subsystem shutdown for the electrical support systems is based on 
the final system configuration. A review of these considerations will establish system, and 
subsystem shutdown operating mode. 
4.2.6 Safety Management Program, and Administrative Controls 
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As the repository design matures, the safety management program, and administrative control 
that apply to the electrical support systems will be identified in this section. 
4.3 TESTING, AND MAINTENANCE 
Situations under which temporary configurations are used during surveillance or maintenance are 
based on the final system configuration. A review of these considerations will establish 
temporary configurations requirements. No temporary configurations requirements have been 
identified at this time. 
4.3.1 Temporary Configuration 
As the repository design matures, separate testing, and maintenance programs, and temporary 
configurations will be identified in this section. 
4.3.2 TSR Required Surveillances 
These requirements will be based on the final system configuration, and its contribution to preclosure, 
and post-closure performance objectives. A review of these considerations will establish 
the set of necessary surveillance, inspection, and testing requirements. No surveillance, 
inspection, and testing requirements have been identified at this time. The above requirements 
will be determined as the design process matures. 
4.3.3 Nan TSR Surveillances, Inspections, and Testing 
Procedures will be developed to define, and describe surveillances, inspections, and testing 
requirements. The procedures will be based on manufacturers recommendations, and final 
system configuration. 
4.3.4 Maintenance 
Maintenance requirements for the electrical support systems include the development of 
preventive maintenance, and post maintenance testing processes, and any post modification 
testing programs. The maintenance program for the electrical support systems will be developed 
as part of the repository maintenance program. 
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5. REFERENCES 
5.1 DOCUMENTS CITED 
BSC (Bechtel SAIC Company) 2004. Safety Classification of SSCs, and Barrier. CAL-MGRRL-
000001, Rev. OOB. Las Vegas, Nevada: Bechtel SAIC Company. ACC: 
DOC.20030929.0014 [DIRS 1699711 
BSC (Bechtel SAIC Company) 2003. Q-List. TDR-MGR-RL-000005 REV 00. Las Vegas, 
Nevada: Bechtel SAIC Company. ACC: DOC.20030930.0002. [DIRS 1651791 
BSC (Bechtel SAIC Company) 2003. Preliminary Nuclear Safety Design Bases for License 
Application. TDR-MGR-RL-000006 REV 00. Las Vegas, Nevada: Bechtel SAIC Company, 
ACC: DOC.20030930.0008. [DLRS 1651821 
BSC (Bechtel SAIC Company) 2004. Preliminary Hazards Analysis for License Application. 
000-30R-HPYK-00100-000-00A. Las Vegas, Nevada: Bechtel SAIC Company. ACC: 
ENG.200406 10.0002. [DIRS 1673 131 
BSC (Bechtel SAIC Company) 2004. Site Fire Hazards Analysis. 000-30R-PF00-00100-000- 
OOA. Las Vegas, Nevada: Bechtel SAIC Company. ACC: ENG.20040305.0014. [DIRS 
1681491 
BSC (Bechtel SAIC Company) 2004. Subsurface Repository Fire Hazard Analysis. 800-30RPF00-
00100-000-00A. Las Vegas, Nevada: Bechtel SAIC Company. ACC: 
ENG.20040303.0083. [DIRS 1687261 
Doraswamy, N. 2004. "Preliminary Draft Input Version of Project Design Criteria Document." 
Interoffice memorandum from N. Doraswamy (BSC) to Distribution, May 26,2004, 
0526041747, with attachment. ACC: MOL.20040526.0027. [DIRS 1695481 
TBV-5850 
Siddoway, D.W. 2003. Project Functional, and Operational Requirements. TDR-MGR-ME- 
000003 REV 01. Las Vegas, Nevada: Bechtel SAIC Company. ACC: ENG.20030630.0001 
[DIRS 1639041 
Canori, G.F., and Leitner, M.M. 2003. Project Requirements Document. TER-MGR-MD- 
000001 REV 02. Las Vegas, Nevada: Bechtel SAIC Company. ACC: DOC.20031222.0006. 
[DIRS 1662751 
5.2 CODES, STANDARDS, REGULATIONS, AND PROCEDURES 
10 CFR 63. Energy: Disposal of High-level Radioactive Wastes in a Geologic Repository at 
Yucca Mountain, Nevada. Readily available. [DIRS 1566051 
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DOE (US. Department of Energy) 2004. Quality Assurance Requirements, and Description. 
DOE/RW-0333P, Rev. 14. Washington, D.C.: U.S. Department of Energy, Office of Civilian 
Radioactive Waste Management. ACC: DOC.20030422.0003. [DIRS 1629031 
DOE-STD-3024-98. 1998. Content of System Design Descriptions. Washington, D.C.: US. 
Department of Energy. TIC: 254659. Verified. [DIRS164472] 
NFPA 70. 2002. National Electrical Code. 2002 Edition. Quincy, Massachusetts: National 
Fire Protection Association. TIC: 252084. [DIRS 1577641 
IEEE Std. 80-2000, IEEE Guide for Safety in AC Substation Grounding. New York, New York: 
Institute of Electrical, and Electronics Engineers. TIC: 254157. [DIRS 1642561 
IEEE Std. 81-1983. IEEE Guide for Measuring Earth Resistivity, Ground Impedance, and Earth 
Surface Potentials of a Ground System. New York, New York: Institute of Electrica1,'md 
Electronics Engineers. TIC: 232605. [DIRS 1023251 
IEEE Std. 142-1 991, IEEE Recommended Practice for Grounding of Industrial, and Commercial 
Power Systems. New York, New York: Institute of Electrical, and Electronics Engineers. TIC: 
235220. [DIRS 1222451 
IEEE Std. 515-1997. IEEE Standard for the Testing, Design, Installation, and Maintenance of 
Electrical Resistance Heat Tracing for Industrial Applications. New York, New York: Institute 
of Electrical and Electronics Engineers. TIC: 256044. [DIRS 1695691 
NFPA 780-2001, Standard for the Installation of Lightning Protection Systems. 2000 Edition. 
Quincy, Massachusetts: National Fire Protection Agency. TIC: 252748. [DIRS 1588541 
Rea, MS., Ed. 2000. IESNA Lighting Handbook, Reference &Application. 9th Edition. New 
York, New York: Illuminating Engineering Society of North America. TIC: 254894. [DIRS 
1651311 
NACE Standard RP0169-2002. Standard Recommended Practice, Control of External 
Corrosion on Underground or Submerged Metallic Piping Systems. Houston, Texas: National 
Association of Corrosion Engineers. TIC: 254895. [DIRS 165 1321 
ANSIIIESNA RP-22-96. 1996. IESNA Recommended Practice for Tunnel Lighting. New York, 
New York: Illuminating Engineering Society of North America. TIC: 255084. [DIRS 1666931 
UL 96A. 2001. Installation Requirements for Lightning Protection Systems. 1 lth Edition. 
Northbrook, Illinois: Underwriters Laboratories. TIC: 255223. [DIRS 1667681 
LP-3.26Q-BSC, Rev.1ACN 4, System Description Documents (DIRS 167662) 
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5.3 DATA TRACKING NUMBER 
No source data are cited in this document. 
5.4 SOFTWARE CODES 
No software codes are cited in this document. 
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APPENDIX A 
GLOSSARY 
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Basis 
Function 
Requirement 
Step Potential 
Touch Potential 
Off-Normal 
APPENDIX A 
GLOSSARY 
Statements that refer to design requirements for SSCs, and 
identify why the requirement exists, why it is specified in 
a particular manner, and why a specified value is used. 
The design bases provide information that identifies the 
specific fhnctions performed by the SSCs of a facility, and 
the specified range of values chosen for controlling the 
parameters that are the referenced boundaries for the 
design of the SSCs. 
A function is the statement of the purpose of a system or 
conlponent. 
A specification of what the design solution must do. 
Requirement statements should also include a statement of 
how well the specification is to be achieved so as to 
permit verification. In some cases, there are several 
different criteria for measuring the success of the 
achievement of the specification, and these would be 
listed as performance acceptance criteria. 
The difference in surface potential experienced by a 
person bridging a distance of 1 meter with the feet without 
contacting any grounded object. 
The potential difference between the ground potential rise, 
and the surface potential at the point where a person is 
standing while at the same time having a hand in contact 
with a grounded structure. 
"Off-Normal" is a term used to define an occurrence of an 
event or condition outside the bounds of routine operations 
but within the range of analyzed conditions for theSSC. 
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APPENDIX B 
LIST OF KEY SYSTEM CHARTS, DIAGRAMS, DRAWINGS, AND LISTS 
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APPENDIX B 
LIST OF KEY SYSTEM CHARTS, DIAGRAMS, DRAWINGS, AND LISTS 
None at this time but will be developed later. 
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I 
APPENDIX C 
LIST OF SYSTEM PROCEDURES 
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APPENDIX C 
LIST OF SYSTEM PROCEDURES 
System procedures have not yet been developed. 
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