A01_-_PWS-Requirement-Salient_Characteristics.docx

Solar Powered Street Lighting

U.S. ARMY GARRISON ADELPHI LABORATORY CENTER

Requirements U.S. Army Garrison Adelphi Laboratory Center requires provision and installation of fifteen (15) Solar Powered Street Lights along Floral Drive east to the 600-area and west to the 400-area.The required lights and installation shall include and conform to the following:

A. Supply and installation of fifteen (15) solar powered lights and associated poles

1) The contractor shall provide all labor, materials, equipment, tools, transportation, supervision, design, erection, installation, testing, and commissioning, including a three year warranty and maintenance contract for fifteen (15) Solar Powered Street Lights as defined in these requirements.

2) The fully functional solar lighting systems and the attachments to the pole shall be designed to meet or exceed ASCE/SEI 7-10 specifications for 150-mph wind event, and additional requirements described in the technical specifications section (G).

3) Provide waterproof seal on all junction, wireway and pull box covers.

4) Provide duct seals at ends of conduit that enter pull boxes and junction boxes

5) Poles shall be designed as follows:

i) Poles shall be hot-dip galvanized steel with mounting height in between 28 to 31 feet in height, allowing the solar panel to face south while not restricting the direction of fixture installation.

ii) The anti-corrosion finish and color selection shall be submitted to the Technical Point of Contact for approval. Manufacturer documentation shall indicate adequacy for the site specific wind speeds and corresponding forces.

6) Lamp arms shall be designed as follows:

(i) Material: anti-corrosive and compatible with materials from contiguous parts

(ii) Finishing: scratch and bolting resistant, e.g., hot-dip galvanized plastic powder sprayed

(iii) All Junctions and wireway to be waterproof seal tight and securely mounted to the pole

(iv) Strong wind load and corresponding forces resistant as described in point 4

7) Solar Panel brackets shall be designed as follows:

(i) Material: Anti corrosive and compatible with materials from contiguous parts

(ii) Rigidness: shall support solar panel (s)

(iii) Composition: single or double brackets

(iv) Shall include a protection plaque for the back of the solar panel and Effective Protected Area (EPA) calculation

8) Light Fixtures shall be designed as follows:

(i) LED powered for roadways application

(ii) Operating voltage and power – 12VDC/24 VDC, 40W-60W

(iii) Light color temperature – 5000 K

(iv) Lumens per Fixture – 4000 Lumens minimum

(v) Lifespan – 50,000 hours minimum

(vi) Standard – latest ANSI/IESNA RP-8 (American National Standard Practice for Roadway Lighting)

(vii) Lamps shall be remotely monitored and controlled at the location through the use of smart controller.

(viii) Lamps shall be also be individually controlled by timers at each light pole location as mentioned above.

9) Solar Panels shall be designed as follows:

(i) Material – High efficiency Monocrystalline Silicon Photovoltaic module

(ii) Power – 200 watts to 340 watts modules shall have anti-adherent glazing and be self-cleaning

10) Smart controllers shall be designed as follows:

(i) Includes microprocessor and timer.

(ii) Interface: LED driver with an integrated solar charge controller that monitors charging and discharging of batteries, as well as controlling and dimming of LED light source.

(iii) Programmable to control hours of operation and light level requirements.

(iv) Shall be placed in secure environment against theft and vandalism, preferably into battery enclosure box.

11) Battery enclosure boxes shall be designed as follows:

(i) Anti-corrosive and compatible with materials from contiguous parts

(ii) Dimensions: Designed to contain a battery with a smart controller or associated components

12) Batteries shall meet the following requirements:

(i) A minimum backup power for 4 days (56 nighttime operating hours per permissible discharge)

(ii) Maintenance free 12V/24V Direct Current (DC), 328 Ampere Hours (AH) rater sealed a valve-regulated lead-acid (Gel) or Absorbed Glass Mat (AGM) DC system

(iii) Loaded Weight and position on pole should be calculated as to meet the EPA requirement and not to compromise stability of lighting pole system. The vendor shall provide these calculations in writing at time of installation.

(iv) Automatic low-voltage shutdown to protect battery

13) Foundations:

(i) The contractor shall carry out a survey at the location and evaluate the condition of the site and foundation for the project. If the existing foundation is not suitable to use with the newly installed system, notify the COR with the best proposal to install the new foundation.

(ii) Existing foundation shall be reusable with the newly installed solar powered lighting system.

(iii) Foundations shall be reinforced concrete with a number of steel bars sized to prevent cracking and/or failure of the concrete.

(iv) Foundation dimensions shall be adequate to resist site-specific wind loads (as a minimum, a wind speed of 150 mph shall be used) and induced forces.

(v) The proposal shall provide calculations associated with the foundations and design of the steel reinforcement in compliance with American Concrete Institute (ACI 318) of equivalent applicable European Norm (EN). The proposal shall also describe the methodology to be used for the leveling of the light masts, as well as the design of the corresponding anchor plate and base plate.

14) Anchors:

(i) The embedded anchors shall be galvanized or stainless steel.

(ii) Anchors shall have a bolt head or a hook (J- or L-bolt) as a means of mechanically anchoring them to the concrete.

(iii) New or existing anchor bolts should not be used without consulting the manufacturer's catalog or performing a thorough engineering analysis.

(iv) The proposal shall include calculations of the anchor capacities in accordance to American Concrete Institute 318-11, Appendix D, or equivalent applicable European Norm (EN).

15) Connections:

(i) The system shall not have any electrical wire connection to the ground. Every unit shall be totally independent from the others and the power system contained to the pole itself.

(ii) No visually apparent wires. All cabling shall be secured inside metal components, from solar modules to light source.

(iii) Welding shall confirm with international welding standard of AWS (American Welding Standard) and CWB (Canadian Welding Bureau).

B. Site survey and identification of lighting locations

1) The contractor shall carry out a survey at the actual site locations, coordinate with COR, and carry out detailed design configuration of the solar street lighting system at the identified sites, develop layout drawings for actual execution of work.

2) Approval from COR shall be obtained prior to the commencement of installation work on site.

3) Detailed layout along with specific engineering drawings detailing lighting foundation, footing and installation shall be submitted by the contractor before installation.

4) As built location map is to be prepared by the contractor at the time of practical completion and submitted to COR for approval. Map shall clearly identify all installed lights so that each individual light can be identified. The location of the work site under this contract shall be performed at the U.S. Army Garrison ALC, 2800 Powder Mill Road; Adelphi, Maryland 20783.

C. Three (3) year warranty period

1) The vendor shall include a warranty on parts with the following characteristics:

(i) 3 years minimum for any technical incident

(ii) Solar panel = 15 years shelf life minimum

(iii) Battery = 5 years shelf life minimum

(iv) A written commitment to cover damages up to a 150 mph wind (contractor can propose an optional solution for preventing the fall of the pole)

(v) Cost for intervention during period of guarantee is to be covered by contractor (spare parts, transport)

(vi) A maintenance team on call (Provide details in the proposal). If the company is not based in Maryland, the local representative shall be trained and provide maintenance.

(vii) Intervention within 24hr maximum of notification

(viii) Quoted Price shall include: Initial warranty of three year; inclusive of any necessary spare part or service (including unit price and purpose).

2) Special requirements:

(i) Proposition of an extension of guarantee with option years (3 years) to extend the warranty

(ii) All units shall be delivered and installed within 30 days following the signature of the contract.

D. Maintenance Documentation An operation, instruction, maintenance manual in English shall be provided with the solar street light system. The following minimum details must be provided in the manual;

1) About the photovoltaics

2) About solar street light system – its components and expected performance

3) About PV module

4) About white LED lights, the make, model number, the number required, how to replace etc.

5) About the battery and electronics used

6) About charging and significance of indicators

7) About installation security. If a pole and foundation need to be reinstalled, what security rules need to be followed to prevent electric risk or risk of fall during installation

8) Do’s and Don’ts of the system

9) Clear instructions on regular maintenance and trouble shooting

10) Name and address of the person or service center to be contacted in case of failure or complaint E. Identifying and branding plate

1) A number and branding plate (to be defined prior to issuing purchase order) is to be placed on each individual light so as to be able to clearly identify each of the lights installed and to support the tracking of maintenance, servicing and parts replacement.

2) A photographic sample of the permanent marking plate shall be supplied by vendor with the proposal.

F. Training session The contractor shall provide an adequate training to the government employees from the operation and maintenance team at Adelphi. The training session shall be held over a 1 – 2 day period and shall include the following;

1) Basic understanding of the solar powered system; how the charging system works, sun light requirements for effective charging, performance of batteries, lighting etc.

2) Basic maintenance procedures such as; how to change a battery, replacing LED’s, cleaning photovoltaic cells etc.

3) Trouble shooting problems associated with the solar powered lamps

4) Do’s and don’ts associated with the solar powered system Basic curriculum shall be submitted for review at the time of bid submissions.

G. Summary of Solar Lighting Technical Specifications:

System Output Life cycle of lamps 4000 Lumens minimum ≥ 50 000 hours

Notes:

(i) Solar powered Light Cost Breakdown We request the vendor to justify the description, quantity and unit price of the item if there is a proposed item with different specifications than the ones requested by Department of Public Works at Adelphi, Maryland.

(ii) Past Performance With the quote, the vendor shall provide a list relevant contracts of a similar nature and provide number of lights installed, name of location and contact details to reference performance of contract.

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