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QUESTION AND ANSWER 002 – PR 8552819
| 1 |
| Location of Phase I and II Solar Arrays |
I’ve attached below a Google Satellite image highlighting what appears to be several different solar arrays. We need to know the location of Phase I and Phase II. A site plan/layout would be great if you have one available.
The arrays on Utility building 1 Utility building 2 and the Chancery building make up the phase 1 while the arrays on the PKG building make up the phase 2 (Please see attached layout).
Any information on the electrical design that you can provide would be a tremendous help – e.g., point of interconnection, location and size of existing conduit, wire type of the output circuits for the inverters that will be replaced, etc. A one line diagram of the system would also be helpful. (See line diagram of Phase 2 attached)
The point of interconnection is on the Isolation transformers at the first floor of the PKG building location and size of existing conduit, existing conduit are ¾ “ 1” and 2’”depending on the number of wires drawn in.
| 3 |
| What are the make/model of the solar modules? This is important for sizing and qty of replacement inverters. Phase 1 Solar modules |
| 464 units of combined SunPower 210W and 220W PV modules and 7 units of 13KW Solectria PVI inverters on Phase 1. |
There are 1,155 units of Suniva 255W modules on Parking garage roof and 20 units of 15KW SMA- Solar Technology Inverters in PKG Electrical rooms.on Phase 2.
| 4 |
| How many PV panels are there in a string. |
| There are 15 panels per strings |
| 5 |
| How many strings are wired per inverter? |
| There are 4 strings per inverter |
| 6 |
| What is the specification of the Sunny Tripower inverter |
| Sunny Tripower STP 15000TL-10 (see attached picture) |
| 7 |
| How many extra ports are on the Synology server? |
| Two |
| 8 |
| Are there fiber optic cable runs for monitoring the inverters? |
| There is no fiber optic cable runs between the inverters. Data acquisition on the inverter is by means of CAT 6 cables. |
| 9 |
| Can you please verify the magnitude of construction for the Embassy Abuja project, listed as $50,000 to $150,000? |
Please see section L.5 in the Solicitation Page 111
| 10 |
| Can you provide U.S. Embassy – Abuja, Nigeria – Solar Design (Phase 1) As-Built Drawings, Dated 01-01-2008, Sensitive But Unclassified |
Provided as requested (see new attachment)
| 11 |
| Can you provide U.S. Embassy – Abuja, Nigeria – Solar Design (Phase 2) As-Built Drawings, Dated 03-19-2013, Sensitive But Unclassified (to help determine what communications modules are installed in the existing inverters) on CD, USD or paper? |
Provided as requested (see new attachment)
| 12 |
| Please clarify the following: Section L proposal instructions indicate to use Section A contract form SF1442, complete blocks 14 thru 20. However, SF1449 is provided and blocks 14-20 are not correct |
| Use the SF 1449 provided in the solicitation Page 2 |
| 13 |
| Breakdown of proposal is to be per provided Divisions of Specifications J.2.2 however J.2.2 is not provided. |
| Follow the instructions on submitting offers in Section L |
| 14 |
| Technical proposal is to include elements specified under L.5.5.3, this section is not provided. |
| 15 |
| Section H Bond requirements is indicated as “Reserved”. H.1. states to have DBA insurance. Therefore a bond is not required. Please confirm a bond is not required nor a letter of credit |
| Confirmed; bond is not required nor letter of credit |
| 16 |
| We are to obtain a complete set of plans and specs but none were attached to the RFP |
As Built Drawings now provided
| 17 |
| No attachments were provided although mentioned in section L7.1 |
Description of the Requirements are provided in Section C
| 19 |
| The project architect is to complete SF 330 but that form was not provided. |
See answer to Question 12
| 20 |
| The respondents price breakdown was to be according to a specification per L7.4 but none was provided |
See Section B.4
| 21 |
| We are also exploring the communication between the four PV locations and are wanting to know if two spare fiber lines are available inside the existing fiber cables that are terminated in the Belden breakout box? Can an image of each breakout box be provided for clarity? |
| 22 |
| We also were made aware of an addendum that was added to the RFP concerning a site visit for survey purposes. We did not see this addendum till after the visit. I was hoping to get the sign-in sheet of the attendees and hoping that bidder questions would be answered along with other questions/clarifications with corresponding answers would appear on the FEDBIZOPPS.gov web site. |
With all the confusion surrounding the RFP has the option of an extension come up? If not I would like to request one.
Questions raised during the site visit have answers in this Q&A
Name Plate of Phase Two Inverters
Picture Sample of Phase 2 Cell Arrangement
On the Extreme Right is Phase 2 and the three on the left is under Phase 1 Unclassified image3.png image1.jpeg image2.jpeg
Department of State US Embassy Abuja