B_NFM_PWUC_Rev2_(2018-11-15)Final(ApprovedSigned).pdf

PUBLIC WORKS UTILITIES CRITERIA

(PWUC)

For Design & Construction:

Electric, Sewer & Water

NAVFAC MARIANAS (NAVFACMAR) PWUC

Revision 2: 15 November 2018

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015

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NAVFACMAR PWUC

15 November 2018

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 i

PUBLIC WORKS UTILITIES CRITERIA DESIGN AND CONSTRUCTION: ELECTRICAL,

SEWER, and WATER

Record of Revisions / Changes Revision # Date Description of Changes

1 02 April 2015 Chapter 1, Section 1.2 & 1.4 added sentence to include AAFB Chapter 2, Added new Section 2.1.1 – 2.1.1.2 Government Services; Updated Section 2.3.4 –

2.3.4.1 Metering; Added SCADA Section 2.3.7 –

2.3.7.2.3 Chapter 3, Updated Section 3.3.12 Meters; Added SCADA Section 3.3.15 – 3.3.15.2.3 Chapter 4, Updated Section 4.4.1 Water Meters;

Added SCADA Section 4.5.8 – 4.5.8.2.3 Chapter 5, Replaced with New Chapter 5, Smart Grid Section 5.1 – 5.2

2 15 November 2018 PWUC - Re-format the whole document, Significant re-write.

Chapter 1, Updated Section 1.1 – added “Designers”, changed “encouraged” to “required”;

Updated Section 1.2 to indicate “NAFACMAR Public Works Utilities on Guam.”; Updated Section 1.3 -changed “and” to “but it”; Updated Section 1.4 – clarified that electrical distribution is medium voltage (not high) and added reference to GUARNG Barrigada Complex; Updated Section 1.5 – Changed “Utilities” to “UEM”; Updated Section 1.6 – Complete re-write (incorporated requirement of previous sections 1.7 & 1.8); Added/Revised Section 1.7 – Utilities Connections; Added/Revised Section 1.8 – Meter Installation & Removal; Added Section 1.9 – Government Services; Added Section 1.10 – BOSC Services; Added Section 1.11 – Utility Outages;

Added Section 1.12 – Availability of Utilities for Contractors; Revised previous section 1.9 – now Section 1.13 references.

Chapter 2 – Updated Section 2.1 – Changed “Utilities” to “UEM”, significant re-write – removed section 2.1.1 (requirement is now in Chapter 1);

Updated Sections 2.3.1.7, 2.3.1.9, 2.3.2.2, 2.3.2.8, 2.3.3, 2.3.4, 2.3.5.2, 2.3.5.3; Added 2.3.5.4 - “Sectionalizing Termination Cabinet (STC)”; Updated Section 2.3.7, 2.3.8, 2.3.8.1 and 2.3.8.3; Updated

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 ii

Section 2.3.9.4 - Changed “170 MPH” to “180 MPH”;

Updated Section 2.3.10; Updated Section 2.4 – now “Equipment, Spare Parts & Special Tools”, remove previous section 2.4.1 related to “utilities for contractors”; Updated previous Section 2.4.1.3 &

2.4.1.4 – now section 2.4.1.1 & 2.4.1.2; Updated Section 2.4.4 and added new Section 2.4.4.1.e;

Updated Section 2.4.13.; Removed section 2.8.

Chapter 3 – Updated Section 3.1.9; Removed Section 3.1.10 (requirement included in Chapter 1);

Updated Section 3.2.1, 3.2.2, 3.2.13, 3.3.12, 3.3.15, 3.3.17, 3.3.19, & 3.5.2; Removed Section 3.7.

Chapter 4 - Updated Section 4.2.1; Updated Section

4.2.7.2 – Changed “…class 200 (DR 14).” to “….class 235 (DR 18)”; Updated Section 4.2.8;

Updated Section 4.4.1 – complete rewrite; Updated Section 4.11 – removed “References”, now “Construction Notes”.

Chapter 5 – Renamed from “SMARTGRID” to

“COMMUNICATIONS & CYBERSECURITY”;

Significant rewrite

Appendices - Added Appendix 1-7

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 iv

TABLE OF CONTENTS

CHAPTER 1 - INTRODUCTION

1.1 GENERAL INFORMATION

1.2 OBJECTIVE

1.3 PURPOSE AND SCOPE

1.4 APPLICABILITY

1.5 WAIVER

1.6 PROJECT SUBMITTALS

1.7 UTILITIES CONNECTIONS

1.8 METER INSTALLATION & REMOVAL

1.9 GOVERNMENT SERVICES

1.10 BASE OPERATING SERVICES CONTRACTOR (BOSC) SERVICES

1.11 UTILITY OUTAGES

1.12 AVAILABILITY OF UTILITIES FOR CONTRACTORS

1.12.1 Paying for Utilities

1.12.2 Contractor Account / Job Order Numbers

1.13 REFERENCES

CHAPTER 2 – ELECTRIC

2.1 GENERAL INFORMATION

2.2 PRIMARY DISTRIBUTION SYSTEM CHARACTERISTICS

2.2.1 System Voltages

2.2.2 System Configuration

2.3 EQUIPMENT

2.3.1 Transformers

2.3.2 Switchgears

2.3.3 Relaying

2.3.4 Metering

2.3.5 Cables

2.3.6 Substations (End-of-Line)

2.3.7 SCADA

2.3.8 Manholes/Handholes

2.3.9 Overhead Distribution Systems

2.3.10 Miscellaneous Equipment

2.4 SPECIFICATIONS

2.4.1 Equipment, Spare Parts & Special Tools

2.4.2 Relays

2.4.3 Switching

2.4.4 High Voltage Cables

2.4.5 Outages

2.4.6 Pier (Shore) Power Outlet Assemblies and Cables

2.4.7 Conductors

2.4.8 Asbestos, Other Environmental Hazards and Personnel Safety

2.4.9 Equipment Operation and Maintenance Manuals

2.4.10 Prevention of Damage to Underground Utilities

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 v

2.4.11 Emergency Eyewash Equipment

2.4.12 Warning Signs

2.4.13 Energization

2.5 SYSTEM ADEQUACY

2.5.1 Contractor/Designer’s Responsibility

2.5.2 System Coordination & Design Analysis

2.6 DUCT ASSIGNMENT

2.7 TELECOMMUNICATION (INCLUDING TELEPHONE, CATV, AND FIBER

OPTIC CABLES)

CHAPTER 3 - SEWER

3.1 GENERAL INFORMATION

3.1.1 Subsurface Oil

3.1.2 Existing Underground Utility Lines

3.1.3 Diversion of Sewage/Spills

3.1.4 Temporary Connections for Contractor Trailers

3.1.5 Dewatering into the Sewer Collection System

3.1.6 Construction Notes

3.1.7 Outages

3.2 SEWER LINES

3.3 LIFT STATIONS

3.4 INDUSTRIAL WASTEWATER DISCHARGE

3.5 ATTACHMENTS AND FIGURES

3.6 Special GWA Requirements for Tie-Ins

CHAPTER 4 - WATER

4.1 GENERAL INFORMATION

4.2 WATERLINES

4.2.9 Cathodic Protection

4.2.10 Coating for Waterlines under Piers

4.3 WATER VALVES

4.3.1 Direction to Open

4.3.2 Valve Boxes

4.3.3 Corporation Stops for Valves

4.3.4 By-Pass and Gearing

4.3.5 Butterfly Valves

4.3.6 Resilient-Seated Gate Valves

4.3.7 Flange Coupling Adapters

4.3.8 Anchor Blocks

4.3.9 Service Saddles

4.3.10 Backflow Preventers

4.3.11 Fire Hydrants

4.4 WATER METERS

4.4.1 Meter Requirements

4.4.2 Metering Exceptions

4.4.3 Metering of Lawn Sprinkler Systems

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 vi

4.4.4 Meters 3 Inches and Larger

4.5 MECHANICAL AND ELECTRICAL EQUIPMENT

4.5.1 Equipment

4.5.2 Operation and Maintenance (O & M) Manuals

4.5.3 Posting of Instructions

4.5.4 Labeling and Tagging of Electrical Wiring

4.5.5 Training

4.5.6 Special Tool Requirements

4.5.7 Spare Parts

4.5.8 SCADA

4.6 MISCELLANEOUS APPURTENANTS

4.7 STORAGE

4.8 PUMP STATIONS

4.9 WELLS

4.10 CROSS-CONNECTION CONTROL AND BACKFLOW PREVENTION

4.11 CONSTRUCTION NOTES

CHAPTER 5 - COMMUNICATIONS & CYBERSECURITY

5.1 OVERVIEW

5.2 GENERAL REQUIREMENTS FOR ICS

5.3 CYBERSECURITY

APPENDICES:

APPENDIX 1 – FORM - UTILITY CONNECTION PERMIT APPLICATIONS

APPENDIX 2 – INSTRUCTIONS - UTILITY CONNECTION PERMIT APPLICATIONS

APPENDIX 3 – FORMS & INSTRUCTIONS - METER CHANGE RECORD

APPENDIX 4 – FORM - NAVFAC MARIANAS ICS CHECKLIST v2.1

APPENDIX 5 – INDUSTRIAL CONTROL SYSTEM (ICS) BASELINE PROCUREMENT

GUIDANCE v2.1

APPENDIX 6 – FORM - SYSTEM AUTHORIZATION ACCESS REQUEST (SAAR)

FOR INDUSTRIAL CONTROL SYSTEMS (ICS)

APPENDIX 7 – FORM - INFORMATION SYSTEM (IS) PRIVILEGED ACCESS

AGREEMENT AND ACKNOWLEDGMENT (PAA) OF RESPONSIBILITIES

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 1

CHAPTER 1 - INTRODUCTION

1.1 GENERAL INFORMATION

Engineers, Designers and Contractors are required to consult with NAVFACMAR Public Works Department (PWD) on design and construction for projects on Public Works Utilities Systems.

Recommended changes and/or deviations to these criteria with supporting rationale shall be sent to Utilities and Energy Management Product Line Coordinator (UEM PLC) for review and consideration.

1.2 OBJECTIVE

The purpose of this document is to provide common technical guidance and to ensure quality and consistency in design and construction for the NAVFACMAR Public Works Utilities Systems on Guam.

1.3 PURPOSE AND SCOPE

This document prescribes design and construction standards necessary to support NAVFACMAR Public Works Utilities. It has been developed from previous “lesson-learned” projects and it is intended for use by experienced engineers and contractors.

This document does not negate other referenced technical standards and common industry practices but is provided as additional criteria specifically for NAVFACMAR Public Works Utilities projects.

This document does not constitute a detailed technical design, construction, maintenance or operation manual, but it is issued as a requirement for all NAVFACMAR Public Works Utilities projects.

1.4 APPLICABILITY

This document applies to all designers and contractors preparing design or performing construction projects involving NAVFACMAR Public Works Utilities Systems on Guam projects including assets that are under NAVFACMAR PWD Utilities & Energy Management (UEM) at Navy Base Guam (NBG), Andersen Air Force Base (AAFB) & Marine Corp Base Guam (MCBG) (i.e., medium voltage electrical distribution, water distribution and sanitary sewer systems) and at Guam Army National Guard (GUARNG) Barrigada Complex (i.e., water distribution and sanitary systems). Include this document as reference to RFPs.

Designers/Contractor should address any questions to the UEM PLC regarding applicability for their project.

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 2

1.5 WAIVER

Where a valid need exists and an alternate solution involving sound engineering and construction is available, designers and/or contractors can submit request for a criteria waiver to NAVFACMAR PWD UEM.

Requests for waiver should include justification, criteria used, and other pertinent data.

1.6 PROJECT SUBMITTALS

Provide a minimum of three sets (hard/paper & electronic copies on optical disc [CD-R or DVD-R]) of design plans (with applicable Basis of Design, Calculations, Specifications, Response to Comments & correspondence), Shop Drawings, As-Built plans and Electronic Operations & Maintenance Systems Information (eOMSI) for review, comment, acceptance and for record purposes to NAVFACMAR PWD UEM via Contracting Officer.

Provide As-Built plans & eOMSI submittal to NAVFACMAR Base Operations Support Contractor (BOSC) technical library & respective Installation technical library.

Electronic submittals shall include native file formats (Word, Excel, GIS, AutoCAD, etc.) & pfd.

1.7 UTILITIES CONNECTIONS

The Customer/Customer Representative, Project Manager or Engineer-In- Charge must contact the UEM as early as in the planning process to verify the availability of utility services.

Forward the utility connection permit application package (see Appendix 1 & 2 for reference) to the Installation PWD UEM for review & approval.

1.8 METER INSTALLATION & REMOVAL

NAVFACMAR PWD UEM shall be informed of any meter (electric, water & sewer) installation and removal. Forward the meter change form (see Appendix 3 for reference) to the Installation PWD UEM for review, approval & acceptance.

NAVFACMAR UEM Billing & Allocations group shall be informed of the installation or removal.

1.9 GOVERNMENT SERVICES

Project (MILCON, SRM, Special projects) submittal reviews, facilities escort, site visits, utility service connections, shall be cost reimbursable

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 3 using project funding, as applicable. Project Manager / Contracting Officer to coordinate with NAVFACMAR UEM & Financial Management (FM) with regards to providing funding document & setting up a Job Order Number

(JON).

Escort Services: On occasion, facilities engineering studies/investigations commissioned by other Navy Activities require others (A-E, outside consultants or other Navy Personnel) to access secured NAVFACMAR UEM operational areas (e.g. substation, booster pump facilities, sewer lift stations, etc.) where qualified NAVFACMAR PWD UEM escorts will be required. In such instances, the Navy facility sponsor (Project Manager / Contracting Officer) shall establish a Job Order account with the NAVFACMAR FM & UEM to reimburse the affected NAVFACMAR PWD UEM Work Center for escort by qualified maintenance personnel at the prevailing/established Work Center hourly labor rate. Such escort services will need to be arranged in advance with the supervisor of the affected NAVFACMAR PWD UEM Work Center.

The resources of NAVFACMAR PWD UEM or the NAVFACMAR BOSC shall not be committed to any Project team/Contractor’s work plan without proper coordination.

1.10 BASE OPERATING SERVICES CONTRACTOR (BOSC) SERVICES

Facilities escort & site visits shall be coordinated with the respective Utility Annex Contracting Officer Representative (COR) & BOSC Annex Manager. Project Manager / Contracting Officer to coordinate with NAVFACMAR UEM & Financial Management (FM) with regards to providing funding document & setting up a Job Order Number (JON).

1.11 UTILITY OUTAGES

Contractor shall follow provisions in the contract related to utility outage request.

NBG Utility (Electric, Water & Sewer) outages, De-energization, or Energization support shall be coordinated with the NAVFACMAR BOSC Service Support Center. Cost related to Utility service outages / connections, shall be paid by Contractor to BOSC.

AAFB Utility (Electric) outages, De-energization, or Energization support shall be coordinated with the NAVFACMAR BOSC Service Support Center. Cost related to Utility service outages / connections, shall be paid by Contractor to BOSC.

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 4

AAFB Utility (Water & Sewer) outages support shall be coordinated with 36 CES Customer Service / Operations Support. Cost related to Utility service outages / connections, shall be paid by Contractor by providing Job Order Number to Work Center Supervisor when requesting support.

1.12 AVAILABILITY OF UTILITIES FOR CONTRACTORS

Reasonable amount of utilities (normally electricity & potable water) will be made available to the Contractor at the prevailing rates at the time of use.

Requests for installation of Contractor field offices utility services shall be forwarded to the Contracting Officer in accordance with the contract specifications. Request shall include the following information:

a. Site Plan, showing location of Contractor field offices, source/point of connection of electrical power or water, & proposed route of service conductors/water line. Plans proposing to route cables in the Navy's underground distribution system shall indicate the duct(s) to be used.

b. Electric One-Line Diagram, including load (kVA) and voltage requirements. Meter shall be provided by the contractor.

c. Water One-Line Diagram, including water flow & pressure requirement, and pipe size. Back flow preventer (BFP) & meter shall be provided by the contractor.

d. Meter (Electric or Water) & BFP to be used shall be calibrated. Provide calibration certificate to NAVFACMAR UEM representative.

Calibration certificate shall be effective during the contract duration.

1.12.1 Paying for Utilities

For all construction projects where Government utilities are required for the Contractor’s use, typically for office trailers, the Navy contractually requires that the Contractor pay for Government utility service used (potable water, electricity, sewer, etc.). The Contractor shall also be responsible for, and pay for, associated costs of connecting, disconnecting, conveying utilities to the work site, meters, transformers, backflow preventers, etc. as necessary. Utility billing accounts shall be established with NAVFACMAR UEM. Coordinate with the Contracting Officer.

1.12.2 Contractor Account / Job Order Numbers

Contractors performing work shall establish separate job order numbers with the NAVFACMAR UEM & Financial Management (FM) for the use of any Navy-supplied electrical, potable water and wastewater provisions and services to be provided during the construction phase. Such accounts are usually established through the facilities project / Contract

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 5 administrator. Establish a separate NAVFACMAR Contractor account (Job Order Number) for required support by Government forces, to reimburse the affected NAVFACMAR Work Centers for pre-arranged services, materials and utility consumption. For projects located at the AAFB, Contractors shall provide Job Order Number to work center supervisor when requesting support.

Because the primary mission of NAVFACMAR UEM is to ensure reliable utility services to its customers, Emergency response efforts by government personnel (including NAVFACMAR BOSC) required to mitigate a utility emergency situation (i.e. electrical system damage, sanitary sewage overflows, broken waterlines, etc.) resulting from construction operations may also be charged to such Contractor accounts.

The resources of NAVFACMAR PWD UEM or the NAVFACMAR BOSC shall not be committed to any Contractor’s work plan.

1.13 REFERENCES

The “Facilities Criteria (FC)”, “Unified Facilities Criteria (UFC), and “Unified Facilities Guide Specifications (UFGS)” have valuable information and requirements relating to subjects that are addressed by these criteria.

Contractor shall comply with the applicable Facilities Criteria (FC), Unified Facilities Criteria (UFC) and Unified Facilities Guide Specifications (UFGS) located at http://www.wbdg.org.

If there is a conflict between these criteria and/or other NAVFAC publications and Government of Guam Standards, the engineer or contractor shall contact the Contracting Officer or Project Design Engineer. Where perceived conflicts may exist, the more stringent requirement will apply. The Contracting Officer or Project Design Engineer shall contact NAVFACMAR PWD UEM for further guidance.

http://www.wbdg.org/

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 6

CHAPTER 2 – ELECTRIC

2.1 GENERAL INFORMATION

This section covers electrical materials, equipment, and installation techniques used in general construction for electrical systems to be maintained by NAVFACMAR PWD UEM.

2.2 PRIMARY DISTRIBUTION SYSTEM CHARACTERISTICS

2.2.1 System Voltages

2.2.1.1 Primary distribution system voltage

Primary distribution system voltage is predominantly and preferred 13.8kV, 3 phase, 3 wire, except in few existing areas with 13.8/7.97kV and 4.16/2.4kV.

2.2.2 System Configuration

2.2.2.1 Radial Feed - Systems are generally radial in configuration from the main substations switchgears.

2.2.2.2 Loop Feed - Switches or other means of loop feed capability are required for new distribution transformers for back feed capabilities.

2.2.2.3 Double Dead Ended with Secondary Tie for Shore Power Stations

2.2.2.4 System Tie Feeders shall not be used to directly supply loads.

2.2.2.5 Dedicated shore power feeders shall not be used to supply non-shore power loads. Exception: Industrial loads associated with the pier.

Dedicated underground electrical feeders shall provide Shore-to-Ship power only to ships/vessels. Provide a separate pad mounted transformer as a source feeder to industrial power at the wharf.

Figure 2-1 shows details for a 60 A industrial receptacle. Figure 2-2 typical details for a 200 A industrial receptacle.

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 7

Figure 2-1: Typical 60 A Industrial Receptacle

Figure 2-2: Typical 200 A Industrial Receptacle

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 8

2.3 EQUIPMENT

2.3.1 Transformers

2.3.1.1 Size – Distribution transformer size shall be limited to limit the short circuit current to within economical standard rating of the designed panelboard size associated with the electrical load. The size limit shall depend upon the secondary voltage of the transformer. Electrical designs shall include design analysis and transformer size calculations to be included in the basis of design and summary of electrical load calculations. Station Class Power transformers shall be provided with transformer monitor with SCADA features.

2.3.1.2 Protection

2.3.1.2.1 Primary Protection - All transformers shall be provided with appropriate primary protective devices, such as fuses, circuit breakers, interrupter switches, and/or relays, applicable and designed according to the transformer size.

2.3.1.2.2 Secondary Protection – should not be more than (1.25) X Secondary FLC or as required by the NEC.

2.3.1.3 Transformer Taps (see section 2.2.1 System Voltages above) - Provide four 2-1/2 % full capacity primary taps; two above and two below rated primary voltage.

2.3.1.4 Pad mounted transformer windings shall be made out of copper. Station class transformer windings shall be made out of copper or aluminum.

2.3.1.5 Transformers shall be insulated with non-PCB mineral oil or other approved environmentally friendly insulating oil due to recycling and disposal issues.

2.3.1.6 Submittal Requirements – Designers/Contractors shall submit the required complete transformer specifications to the NAVFACMAR PWD Utilities and the Project Design Engineer for review and acceptance prior to procurement. Transformer data shall include, but not limited to the following: winding and core materials and design, test data on insulation, conductors, resistance, dielectric strength, and losses.

2.3.1.7 Pad Mounted Transformers

a. Maximum size – 1000kVA. Transformers rated above 1,000kVA, serving 480/277 volt loads and above 2,500 kVA serving 480/277 volt loads must be in a secondary unit substation configuration. On

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 9 upstream of a transformer larger than 1,000kVA, provide pad mounted VFI switchgear with Tri-phase control devices and complete with features such as overload, ground and instantaneous fault protection.

The pad mounted VFI switchgear shall be selectively coordinated with all supply side overcurrent protective devices.

b. Do not use dead front transformers if the available fault current exceeds 10,000 amperes symmetrical.

c. Constructed of stainless steel.

d. Provide liquid (oil) level indicator.

e. For loop feed systems, provide 3 each two-position load break primary switches with one set of primary fuses.

f. For loop feed systems supplying single phase transformers, provide three phase primary switches.

g. For loop feed systems and cable risers, provide auto-resetting, directional fault indicators for each phase.

h. For loop feed systems, provide cable fault indicator for each phase.

The indicator shall be installed in the out-going side of the loop elbow.

i. Provide test point for the load break elbows.

j. Provide standard fuses instead of current limiting fuses. Exception: For pad mounted transformers connected directly to 13.8kV radial feeders, current limiting fuses will be allowed to reduce the available fault current. Expulsion and Current Limiting Fuse ratings shall be indicated in the Design Plans and As-Built Drawings.

k. Provide temperature gauge. On transformers over 500KVA, provide temperature sensor and all communications infrastructure and integration to the SCADA front end.

l. Provide spare set of fuses.

m. All kWh metering shall be installed on the pad mounted transformer’s concrete enclosure and not on the transformer’s metal enclosure.

n. Provide bushing mounted elbow type arresters at the end of all radials and in normally open locations in loops. Provide arresters for all voltage levels above 5kV.

2.3.1.8 Pole Top Transformers

a. Maximum number of transformers on a single pole shall be three. Limit pole-mounted transformer sized as follows:

• Three phase installations – limited to three 25kVA transformers or smaller.

• Single phase installations – limited to one 75 kVA transformer or smaller.

b. Transformer kVA size shall be labeled on the tank; labels with a minimum of 4” high lettering.

c. Covers shall be constructed of stainless steel.

d. Provide external tap changer.

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 10

2.3.1.9 Provide transformer identification number on transformer enclosure.

Stencil in 4 inch high white lettering. Transformer ID label shall include the facility or building number it is feeding, the transformer’s kVA and voltage rating (e.g. 13.8 kV 480/277VAC)

2.3.1.10 For loop feed systems supplying single phase transformers, identify transformer phase assignment (i.e. AB, BC, CA) and balance single phase loads. Provide cable tags identifying phase inside of primary compartment.

2.3.2 Switchgears

2.3.2.1 Breaker Control Voltages

a. Switching Station: 125VDC trip and close

b. Remote or End-of-Line Station (small sizes on isolated areas): use

48VDC or 120VAC trip and close

2.3.2.2 Breaker Indication Lights and Controls

a. Provide the following indication light colors for primary and secondary power breakers:

1. Green – Normally Open

2. Yellow – Open (Tripped)

3. Red – Normally Closed

b. Indication lights shall be “push-to-test,” transformer, resistor on diode type.

c. Controls for breakers shall be compatible with existing SCADA controls and shall be integrated into the SCADA front end. Follow section 5.

d. Provide each draw out breaker with three position operation. The connected position and the test/disconnect position shall be clearly identified by an indicator on the circuit breaker front panel.

e. Provide a portable lifter rated for lifting and lowering circuit breakers from two-high cubicles. Portable lifter shall have swivel casters in front for ease of movement.

2.3.2.3 Lightning Arrestors – shall be metal oxide varistor (MOV) type.

2.3.2.4 Busing - Primary and secondary bus shall be copper, fully insulated.

2.3.2.5 Insulators

a. Primary switchgears installed outdoors shall have insulators made of

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 11 porcelain due to Guam environment.

b. Primary switchgears installed indoors shall have insulators made of porcelain or approved polymer material.

2.3.2.6 Provide bus bar connection from primary switchgear bus to any required Potential Transformers instead of cable connection due to higher probability of failure for cable connections.

2.3.2.7 Cable entry into switchgear shall be sealed to prevent rodent entry. All spare conduit entry into switchgear shall be capped. All entry into switchgear from manholes shall be sealed in the manhole, including ducts with cables.

2.3.2.8 Primary Pad Mounted Switches:

a. Provide vacuum bottle technology with appropriate vacuum fault protection switch. Fault protection relay shall be SCADA ready. Air-insulated switch is prohibited for corrosive or coastal environment. The number of switch-ways will be in accordance with the appropriate design application (depending on the intended system configuration, a 3-way, 4-way, 5-way or at times 6-way switch may be required.

b. Provide key interlock for dual feed system.

c. Require cable fault indicators at switch. The indicators shall be installed in the out-going side of the loop elbow.

d. Provide type 304L or 316 factory-painted stainless steel enclosure.

e. Provide temporary grounding sets.

f. Switch shall be installed on concrete pad. Seal around opening between bottom of the switch and concrete pad with sealant or caulking to resist water, sunlight, and oils.

g. Provide VFI protection device equipped with programmable tri-phase with ground-trip electronic control logic, relay action indicator or detector, and port for laptop connection. The device shall be capable of storing fault events log data. Provide applicable software.

h. Provide high fire point liquid insulation and vacuum bottle interruption, dead front with stainless steel tanks and operator full size viewing windows for each way, three position (On/Off/Ground).

i. Provide NEMA ground pad (welded to tank).

2.3.3 Relaying

Provide relaying protections in accordance with the specified guidelines, standards, and specifications.

2.3.3.1 CT Type - Provide separate CT's for metering (metering accuracy) and relaying (relaying accuracy).

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 12

2.3.3.2 Installation

a. Meters and relays shall be mounted no lower than 2'-0" from the bottom of device to floor and no higher than 6'-0" from the top of device to floor.

b. Meters shall follow section 2.3.4 Metering.

2.3.3.3 Relays shall be microprocessor-based multi-function, programmable type, capable of communicating directly with the SCADA system, unless otherwise specified by NAVFACMAR PWD Utilities. If relays being provided do not already exist in the NFM PWD System, maintenance instruction/documentation, programmable software, and test instrument shall be furnished and included as part of the project. Coordinate with NFM UEM concerning any additional microprocessor-based relay features or functions available to the device that shall be enabled or activated.

2.3.4 Metering

For each facility or structure that is connected to the NAVFAC Marianas electrical distribution system, provide a kilowatt-hour and demand meter.

Meters are owned and maintained as a functional part of the electrical distribution system, as well as the enclosures, switches, cabling, and other accessories that are critical to meter operation. Low voltage secondary cables and pathways are owned and maintained as an inherent part of the facility.

2.3.4.1 The NAVFAC Marianas Advanced Metering Infrastructure (AMI) system is the required system for utility revenue meters to connect to. The AMI system uses Modbus/TCP over Cat6 Ethernet and single mode fiber to network all meters back to centralized servers. New utility revenue meters are required to be AMI meters, and shall be compatible, programmed, and integrated with the AMI system in conformance to the AMI system architecture. All projects that will provide a new AMI meter shall include the following as part of planning, design, and construction:

a. Installation of new or upgraded OSP fiber optic cable infrastructure from the nearest NCTS wire center to the facility or structure that is being metered, as needed, to ensure at least two pairs of single mode fiber are available for use.

b. Installation of new or upgraded fiber optic cable termination panel, network switch, enclosure, intrusion detection relay and lock, and mounting pedestal, at the facility or structure that is being metered, as needed, to ensure conformance to the AMI system architecture.

c. Installation of new or upgraded AMI meter socket and enclosure, This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 13 intrusion detection relay and lock, network cabling and drops, and electrical circuit (must homerun to a point upstream of the electrical meter), as needed, to ensure conformance to the AMI system architecture.

d. Installation and commissioning of AMI meter, accessories, and all other AMI equipment, to also include submission of a change request form, cybersecurity commissioning as outlined in Section 5, delivery of AMI system inventory and network diagram documentation updates, and meter changeover documentation required by the NAVFAC Marianas UEM billing group. Provide wiring with ring lugs for all meter connections.

Meters shall be socket-type, ANSI class 0.2 or better, and able to communicate via an optical interface and Modbus/TCP over Ethernet.

Meters shall have at least 32MB of non-volatile memory and shall be capable of automatically recording consumption data over time using a configurable time interval (standard setting will be 15-minute interval).

Meters shall have Modbus mastering capability, and shall be capable of querying water meter RTUs via the network and storing water consumption and peak flow data over time using a configurable time interval (standard setting will be 1-hour interval). Meters shall be capable of measuring delivered kWh energy (delivered, received, net) and delivered kW demand (instantaneous, cumulative, peak), kVARh/kVAR, kVAh/kVA, PF (min, instantaneous, average), harmonic measurements (%THD voltage and current), voltage quality measurements (sags, swells, imbalances), and shall be capable of detecting and recording events for the conditions of voltage sags and swells, low power factor, high harmonics, high neutral current, hardware/memory failure, low battery, and wiring errors (e.g. reverse rotation on any phase). Meters shall also be equipped with digital input and output capability (e.g. KYZ pulse, relay).

Meter data and programming shall conform to the latest “AMI to MDM Call for Consistency” document and shall be programmed and integrated to be capable of automated remote reading. Submit a request for NAVFAC Marianas UEM to provide Device ID, Meter Point ID, and IP address/subnet mask/default gateway, prior to programming/configuration.

Request must include project name, work description, ready-for-construction (RFC) site plan and one-line schematic.

Meter enclosures (and enclosures for associated equipment) shall be located on the facility exterior wherever possible, in a location that will ensure that utility personnel are able to freely access utility meters and their respective enclosures. If a suitable wall is not available for mounting AMI equipment, a reinforced concrete utility pedestal shall be provided to mount all necessary AMI equipment. Provide reinforced concrete bollards to prevent vehicle damage to AMI equipment if it is located such that it is

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 14 susceptible to damage caused by vehicle traffic, but do not place bollards in such a way that access to the enclosures and equipment is limited. All enclosures shall be capable of being secured via padlock, and shall be rated NEMA 4X stainless steel grade 316 or better, except that socket enclosures are permitted to be NEMA 3R stainless steel grade 304. Equip enclosures with molybdenum alloy stainless steel padlocks, common keyed to match existing. Provide surge protection devices and grounding as needed to protect AMI devices, accessories, and communications pathways. Provide a door sensor on the interior of each enclosure, to be wired as a digital input for intrusion detection purposes.

Provide test switches (ten-pole blocks) equipped with shorting bars (to prevent “open secondary” for current transformers), to enable technicians to remove the meter from the circuit for testing/maintenance purposes without effecting an outage. Provide wiring and cabling that is color coded in accordance with the latest applicable UFGS for electrical metering (26 27 14.00 20 at the time of this writing). Wiring must also be marked/labeled at both ends, in a way that is easily correlated with project record drawings. All wiring shall be performed in a professional manner with wire bundled and supported.

Coordinate all meter installations with the BOSC. The installer and the BOSC shall ensure that meter changeover information is properly documented at the time of any meters being changed out, using a form to be provided by NAVFAC Marianas UEM. Facility owner/activity must be identified properly on the form to ensure recording for billing purposes.

Electrical metering characteristics after the changeover shall be verified to determine if any possible wiring errors or equipment malfunctions have occurred and (if any) shall be resolved at the time of the changeover.

Provide complete manufacturer documentation including installation, maintenance, testing, and user manuals. Manufacturer documentation shall also be provided for all other provided devices, accessories, and software.

If provided meter is not directly supported by the manufacturer for the existing AMI system front-end software (Schneider Electric ION Enterprise), provide software drivers that will enable the AMI system software to remotely interface with the provided meters, and to automatically retrieve meter data. Software drivers shall become property of the Navy, or shall be licensed to the Navy for unlimited utilization within the Navy. Turn over the source code and original files for all scripts, drivers, and/or configuration files that are created for the fulfillment of the project, and the Navy shall retain full ownership and all rights for such documents. AMI system access requirements and restrictions for personnel performing software integration work are given in Section 5.

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 15

Requirements for network devices and pathways are given in Section 5.

2.3.4.2 CT Type

a. Provide separate solid core CT's for metering (metering accuracy, +/- 0.3% or better) and relaying (relaying accuracy). Split core CT is not acceptable.

2.3.4.3 Installation

a. Meter base shall be mounted approximately 4’-0” from the floor.

Switchboard type meters shall be mounted no lower than 2'-0" from the bottom of device to floor and no higher than 6'-0" from the top of device to floor.

2.3.5 Cables

2.3.5.1 Splicing Method and Material Restrictions

a. For heat-shrinkable joints: Do not use this method in an oil-contaminated manhole.

b. Primary cable splices shall be made only in electrical manhole not handhole.

2.3.5.2 Size

a. 500 kcmil copper: Distribution.

b. EPR, 15 kV, 133% UGN application, 5 mil, 25% overlap tape shield.

c. Single conductor

d. Provide counterpoise ground wire with all underground installations.

e. Provide complete grounding system in all underground electrical structure installations.

2.3.5.3 Installation in Manholes

a. Do not install more than 8 primary cables in one manhole.

b. Recommend do not install more than 2 circuits in one manhole.

c. Do not completely loop primary cables in congested manholes.

Provide sufficient slack in cables for 1 set of splices.

d. Provide phenolic cable nameplates/tags (1/16” thick) secured by nylon tie wrap for primary and secondary cables. Nameplates shall be engraved with yellow background and black letters (1” high). Cable

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 16 tags shall include the circuit ID number, system voltage, phase, cable size, “from” where it originates and “to” where the cable goes.

e. Underground conduits shall be a minimum of 6” along main run between underground structures (for Air Force, conduits may be a minimum of 5”).

f. Ductbanks shall be reinforced for seismic conditions.

g. There shall be no separate splices, Bolted-T connections or load junction in a primary electrical manhole.

2.3.5.4 Sectionalizing Termination Cabinet (STC)

a. Provide STC instead of separable (Y or Bolted-T) splices.

b. Provide pad-mounted, dead-front sectionalizing termination cabinets, 600 Amps, 3 phase, 15kV, 600 Amps dead-break/200 Amps load-break bushings, 95kV BIL in IEEE C57.12.28 compliant stainless steel enclosures. Provide high profile sectionalizing termination cabinets when the conductor size is larger than 4/0 AWG to meet the cable bending radius requirement. Install fault indicators on all outgoing circuit feeds.

c. The STC’s bushing center point shall be at a minimum height of its concrete pad finished grade. Low profile STC is not recommended.

d. Provide cable fault locator to each phase of the outgoing (lateral) cables.

e. New fault indicators shall be intended for underground application trip level selection with auto adjusting, fault sensing range from 50 to 1200A, and minimum operating current of 3A. Provide battery powered fault indicator for lines with less than 3A load current. Self-powered fault indicators shall be provided for all main feeders and battery powered fault indicators shall be provided for branch lines to transformers.

f. Provide tags for all underground cables in all accessible locations such as in manholes, transformers, switchgear and sectionalizing termination cabinet.

2.3.6 Substations (End-of-Line).

Provide complete grounding system in all underground electrical structure installations.

2.3.6.1 For new stations, provide 2 incoming primary circuits with individual overcurrent protection.

2.3.6.2 Always provide CLF's for fused primary switches.

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 17

2.3.6.3 New Substation Buildings

a. At a minimum, provide 4" C to nearest MH for future telephone, SCADA requirements, unless otherwise specified in the project specifications. Provide communications pathway to the SCADA front end. New substation control systems shall follow section 5.

b. Provide door hasp for substation security; NAVFACMAR PWD Utilities will furnish its own padlock.

c. Provide double doors for all entry points.

d. Provide primary and secondary power cable trench from point of substation entry and between primary switchgear, transformer and secondary switchgear. This will allow installation and replacement of cables with less effort. Cables in trench shall be fireproofed and supported.

2.3.6.4 For outdoor substations with separate primary switchgear install a cable

(instead of bus) connection between the transformer and primary switchgear.

2.3.6.5 Secondary Main Breaker Section:

a. Require an individual breaker section, separate from secondary switchboard, to be provided. The purpose of the section is to establish a demarcation point to identify the ownership between NAVFACMAR PWD Utilities and customer.

b. Require a draw out type breaker with solid-state trip device.

2.3.7 SCADA

2.3.7.1 When adding new SCADA components, the new components shall be compatible with and integrated for operation under the existing Navy Electrical System SCADA system. New remote SCADA components shall connect and be integrated to the central control station front end. The communication medium shall be fiber unless a waiver is received from Utilities. Communications and requirements for cybersecurity shall follow section 5. At a minimum, monitoring points shall include frequency, voltage, current, power, power factor, intrusion detection, and breaker status. Logging of these point’s values shall occur at a minimum of 15 minute intervals. Control shall allow operation to open and close breakers remotely from the front end.

Contractor integrating new remote with existing master shall have the following (or equal) qualifications:

a. Certified by master station software vendors as “qualified” via attendance in formal training classes, etc.

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 18

b. Minimum 3 years of experience integrating specific remote equipment (RTU, Automation Controller, etc.) with existing master.

It is not acceptable for the Contractor to claim a status of “qualified” by taking master station software training classes after contract award.

The project shall include the following general requirements:

a. On-site training for Engineers and O&M personnel.

b. Factory training if necessary.

c. Site specific documentation (schematics, wiring diagrams, training documentation, user & troubleshooting manuals, etc.).

d. Configuration of master to remotely monitor/control new remote points and historize as necessary.

e. Creation of new remote station one-line diagrams and reports in master station HMI as necessary.

f. Site Acceptance Testing (SAT) and Factory Acceptance Testing (FAT), if deemed necessary.

g. New remote equipment (RTU, Automation Controller, etc.) shall have at least 50% expansion capability fir additional points.

h. New equipment spare parts.

When providing and integrating Intelligent Electronic devices (IEDs), include the following:

a. Logic diagrams with accompanying narratives.

b. IEDs configuration files.

c. IEDs Front Panel Faceplate display in master station HMI for each

IED. This IED HMI faceplate shall display the correct status (ON/OFF) of each IED Target LED.

2.3.8 Manholes/Handholes

2.3.8.1 For new manholes/handholes:

a. Provide a manhole cover with the word “ELECTRIC” stamped in the center. Bond manhole cover with a minimum 6 AWG conductor to the manhole ground loop.

b. Prevent surface water entry by elevating entry opening above surrounding terrain except in sidewalks. Manholes/handholes are not allowed in roadway areas. Underground electrical lines shall not be designed within the roadway areas unless the electrical line’s crossing is required for tie-in and/or completing the design for the service area.

c. Coat exterior walls to prevent infiltration of liquids such as water and oil.

d. Provide closed sump if located below sea level or in liquid (water, oil, etc.) saturated soil. Otherwise, provide open sump.

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 19

e. Seal all ducts entering manhole/handhole.

2.3.8.2 For new manholes/handholes, provide:

a. An identification number embedded on the manhole rim on at least four different locations.

b. Manholes, sized accordingly to provide adequate space for personnel, cables and future requirements. Minimum size of manhole shall be in accordance with applicable UFC standards, unless otherwise specified in the contract specifications or by NAVFACMAR PWD Utilities.

2.3.8.3 For new handholes, provide concrete covers to prevent unauthorized access. For medium voltage handholes with concrete cover, provide ID labels engraved onto the concrete frame or concrete cover. Minimum size of handhole shall be of 4’ x 4’ x 6’; unless otherwise specified by NAVFACMAR PWD Utilities.

2.3.9 Overhead Distribution Systems

2.3.9.1 Fuse cutouts shall be load break cutouts and made of porcelain material.

2.3.9.2 Do not connect to existing primary overhead lines using a mid-span tap and slack span for the following reasons:

a. Lower strength of connection, especially during poor weather conditions.

b. Our shops normally do not stock the connectors for mid-span taps.

c. A higher probability that the primary line must be de-energized for maintenance and repair due to the slack span.

2.3.9.3 Minimum size of new primary lines shall be #2 (solid).

2.3.9.4 Poles shall withstand the 180 MPH wind speed and loading criteria.

2.3.9.5 Minimum diameter for pole ground rod shall be 3/4” diameter X 10’ length and made of copper clad steel.

2.3.10 Miscellaneous Equipment

2.3.10.1 Heaters

a. Heater for primary and secondary switchgear is required.

b. Heaters must be operational after the switchgear is installed, before and during commissioning. Heaters shall have thermostatic control and shall have automatic control features.

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 20

2.3.10.2 When retrofitting existing equipment, the design shall provide the nameplate data.

2.3.10.3 Installation of Equipment Not Owned by NAVFACMAR PWD Utilities.

Equipment not owned by NAVFACMAR PWD Utilities shall not be located in, attached to or consuming electrical power from NAVFACMAR PWD Utilities electrical facilities (substations, switching stations, etc.). If this is not possible the owner of the equipment shall submit a written request to NAVFACMAR PWD Utilities explaining why alternative equipment location is not possible. If the request is approved:

a. The equipment shall be tagged clearly identifying the owner.

b. NAVFACMAR PWD Utilities reserves the right to remove or relocate the equipment

c. We may require the installation of a kWh meter for electrical billing purposes.

d. If electrical service is supplied from a panel board in the facility, the equipment owner will have to depend on NAVFACMAR PWD Utilities forces to allow access into the facility for resetting the panel board circuit breaker, etc.

2.4 SPECIFICATIONS

2.4.1 Equipment, Spare Parts & Special Tools

2.4.1.1 All equipment containing dielectric fluid shall be accompanied by the manufacturer's certification that the equipment contains no detectable PCB's or that the PCB level is less than 1 PPM, IAW OPNAVINST 5090.1A (Environmental Natural Resources Program Manual) dtd 2 Oct 90.

2.4.1.2 Provide spare parts and special tools for equipment to be provided under contract - fuses, circuit breaker test set, tools, protection relay test kit, etc.

2.4.2 Relays

2.4.2.1 Testing

a. Relay Wiring Testing: Testing and verification of CT ratio and polarity and relay operation shall be done by primary current injection.

b. Differential protective relaying circuits shall be tested under load in addition to the primary current injection testing.

2.4.2.2 Time-Current Curves: Submit original manufacturer's published time-current curves of transformer fuses, secondary breakers, relays, etc. for application of relay settings.

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 21

2.4.3 Switching

Only the BOSC Utilities Electrical Power Distribution personnel are authorized to perform switching. Do not use the term "de-energize".

2.4.4 High Voltage Cables

2.4.4.1 Hi-Pot Testing

a. Conduct the tests in three phases: 1) For the existing conductors,

2) For the new conductors after installation, splices and terminators/connectors and before terminating to equipment or splicing to existing conductors, 3) For any of the combined new and existing conductors or new terminators/connectors and existing conductors.

b. New Cables: Perform field acceptance tests on new cables in accordance with ANSI/NETA ATS and IEEE 400.2. Tests must be shield continuity test, insulation resistance test and very low frequency (VLF) alternating voltage withstand test/Hi-Pot for a duration of 60 minutes using a sinusoidal waveform.

c. Existing Cables/Existing cables connected to new connector, terminator and or new cables: Perform field maintenance tests on combined existing cables, new connector, terminator and or new cables in accordance with ANSI/NETA MTS and IEEE 400.2. Tests must be insulation resistance test and very low frequency (VLF) alternating voltage withstand test/Hi-Pot for a duration of 30 minutes using a sinusoidal waveform.

d. Furnish a copy of Hi pot test report certified and signed by the Contractor and DOR to NAVFACMAR PWD Utilities for review and comments upon completion of testing.

e. Label all medium voltage cables – Tags or labels shall include the voltage rating, phase size of cable, circuit identification, and “to” and “from” information. Cable tags shall be in conformance with UFC and UFGS criteria.

2.4.5 Outages

2.4.5.1 Electrical outages shall be requested in writing in accordance with the contract requirements.

2.4.5.2 Electric Power Generator support for scheduled electrical outages on critical facilities (including housing) due to construction contract work shall be provided by the Contractor.

This PWUC supersedes: PWUC dated 14July2011; Revision 1 dated 02April2015 22

2.4.6 Pier (Shore) Power Outlet Assemblies…