Attachment 11 - Questions and Answers FA448622R0002.pdf

DEPARTMENT OF THE AIR FORCE

86TH AIRLIFT WING (USAFE)

QUESTIONS & ANSWERS (Q&A)

FA448622R0002

Convert T-621 into Substation and T-624 into Structures Shop

Question 1: On the first Attachement the is section 01 11 00 there lis a description of the works. These works are the works that are requested in this enterprise?

Answer 1: Contractor will need to accomplish the work in the project drawings, in the list in section 01 11 00 and work included in the answers provided to the Contractors. The list in section 01 11 00 provides more detailed information on some tasks and provides estimated quantities on these. Contractor is always responsible to field verify all distances, dimensions and exact location.

Question 2: I saw that you call this solicitation is negotiated as is written in the FA448622R0002 process.

It means that is not necessary the best price that will be adjudicated?

Are the documents be evalueted or just the documents have to be sent.

Answer 2: Negotiated as this is a Request for Proposal (RFP). Evaluation Factors for Award are referenced in Section M.

Question 3: It´s possible to sent the pag 16 until the pag 42 of the document Specifications+3+January+2022 in xls excel format?

Answer 3: Please check Attachment 12 – Answer#3.

Question 4: Can we propose alternatives for the tender (for exemple doors in aluminium)?

In our opinion the unities do thiese articles are not correct, shoub be cubic meters.

Answer 4: Contractor can submit material and equipment alternatives, if in accordance with the project specifications. The units of the above articles is indeed cubic meters (c.m.).

Question 5: Taking in acount the huge number of documents that has to be done for the tender in english and all the study that has to be done for the budget, is it possible ask na extension of 3 weeks for the delivery of all the process?

Answer 5: An extension will be made not for mentioned reasons in this question but due to the information made available thought this amendment.

Question 6: Under Spec Section 01 10 00 is included a list of materials/tasks with quantities. Is the proposal to be provided based on this list of quantities? lllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll

Answer 6: No. See answer #1.

Question 7: Under Spec Section 01 10 00 is included a list of materials/tasks with quantities. It will be a different site condition and considered for a contract modification if during the project execution it´s required materials/tasks not identified on this materials/task list?

Answer 7: No. See answer #6 and #1. After award, if a different site condition shows up, a project modification may be needed to address it, but only if it was not included in the project drawings, specifications and project questions and answers document.

Question 8: Under Spec Section 01 11 10 (Parag 1.4) it states "T-624 (initially) and T-621 medium voltage switchgear will be in place and online during performance of work under this Contract."

Please information on what needs to be maintained in operation at T-624 (equipment layout/wiring diagrams).

Answer 8: Please check Attachment 13 – Answer#8. Switchgear is located inside building T-624 (side of the building close to the main street). This switchgear receives electricity from EDA and distributes to 5 feeders that feed the base. Contractor shall prepare a phasing plan having in consideration that besides downtime to switch power from T-624 to T-621, switchgear shall be online most of the time.

Question 9: Under Spec Section 01 11 10 (Parag 1.4) it states "T-624 (initially) and T-621 medium voltage switchgear will be in place and online during performance of work under this Contract." Please information on what needs to be installed at T-621 (equipment layout/wiring diagrams)

Answer 9: See Drawing IE-01, IE-05, Specifications, Annex I and Annex II. Also, the new switchgear in T-621 will have to be connected to junction box on the parking lot (three feeders), and to the front of T-624 (two feeders) with new MV cables. Also for more information please check Attachment 14 – MV Drawing Question 10: DWG IE01 thru IE05. In any of the mentioned drawings are specified the type/quantity of MV cable. Is it required installation of MV cables? If yes please specify type and quantity.

Answer 10: Please check Attachment 14 – MV Drawing with requested information. Cable shall be in accordance with Spec 33 71 02.

Approx. cable quantities:

- 150 m (plus cable slack in manholes) - #4 AWG

- 70 m (plus cable slack in manholes) for green feeder cables – 4/0 AWG

- 70 m (plus cable slack in manholes) for black feeder cables – 4/0 AWG

- 80 m (plus cable slack in manholes) for red feeder cables – 4/0 AWG

- 80 m (plus cable slack in manholes) for yellow feeder cables – 500 MCM

- 80 m (plus cable slack in manholes) for blue feeder cables – 500 MCM

Question 11: DWG IE01 & IE05 Spec Section 26 12 19.10. On dwg IE01 shows 2 transformers, 1 located outside T-624 Electrical Room (A13) and 1 located inside T-621. On Spec Section 26 12 19.10 parag. 2.2.2.b. states "Transformer rated T-624 - 225 kVA/ T-621 - 50 kVA kVA." On Dwg IE05 (single line diagram) is shown on cubicle 2 and 10 a 50KVA transformer at each compartment. Please clarify quantity and size of pad mounted transformers required.

Answer 11:

- 1 exterior pad mounted transformer T-624 rated 225 kVA

- 2 interior transformers inside T-621 (as per dwg IE05). T-621 transformer on dwg IE01 is for awareness of floorplan.

Question 12: DWG IE01 & IE05. Spec Section 26 12 19.10On dwg IE01 at Electrical room (A13) is shown two panelboards, one marked as Panelboard USA (in green) and the other marked as Panelboard CE (in black). Also, is shown a box with a tag 208V. It is required any dry-pack transformer from CE to USA system? If yes, please provide type and size

Answer 12: Existing transformer in structures shop will be used. Contractor shall remove from building T-569 (currently structures shop) and install in T-624.

Question 13: During the site visit was mentioned that: One Existing generator is to be reinstalled at T-621. Two Ground Resistors are to be reinstalled at T-621 Capacitators Bank are to be reinstalled at T-621. Please provide details on the existing equipment to be reused, new location and wire diagrams.

Answer 13:

- Existing backup generator, fuel tank and Automatic Transfer Switch in T-621 is to be reinstalled at exterior facility supporting T-621. Please check Attachment 14 – T-621 Backup Generator.

- Existing ground resistors (two zig zag grounding transformers, 2,50m x 1,60m) shall be removed from T-624 and reinstalled in T-621.

- Existing capacitor bank shall be removed from T-624 and reinstalled in T-621 (6,50 m x 1,60 m).

Also please check Attachment 15 – T621 & Attachment 13 – Answer#8, with existing wiring diagram, which shall be replicated in T-621.

Question 14: During the site visit it was mentioned that the existing crane could be used during the project to remove the existing equipment. Please confirm that the existing overhead crane is operational and can be used during the project execution.

Answer 14: Existing crane is operational, but last time it was certified was in 2001, and when the powerplant was turned off in 2004, it was still working properly. The crane can be used by the contractor, at contractor’s responsibility.

Question 15: Is the existing overhead crane to be demolished as part of the project execution or the overhead crane is to be maintained? If is to be maintained, please provide electrical requirements and in which panel board should be connected.

Answer 15: The overhead crane shall be demolished.

Question 16: During the site visit was mentioned that equipment is to be moved from structures shop to T-624.

Please provide information on the equipment that will be moved to T-624 and where is located.

Answer 16: Equipment from list on drawing AQ02 is currently in structures shop T-569, and shall be removed and reinstalled in T-624.

Question 17: At Drawing IE01 is shown a Junction Box near existing manhole. Please provide details/Specs on the equipment that is required?

Answer 17: Equipment shall be a Medium Voltage Sectionalizing Equipment, in accordance with Spec 33 71 02, paragraph 2.16. SecTER cabinets from Eaton (Cooper Power Series) is a typical junction box on base.

Question 18: Under spec section 01 11 00 / 1.2.1 project description, General it is referenced “Soil removed from Northeast (NE) side of building T-624 shall be treated as contaminated soil.”

a. Dwg AR02 identifies the North. Please confirm that is correct;

b. Please identify on dwg AR02 the areas to be considered as having contaminated soils.

Answer 18: Please check Attachment 16 – AR02. True North is updated in the attached dwg and is valid for all drawings. Red hatch area shall be treated as contaminated soil.

Question 19: In order to perform a proper equipment and related appurtenances (piping, valves and tanks) disposal, please inform/confirm if they are clean/free of fuel, pol and other substances that require an individual treatment.

Answer 19: Yes, equipment and related appurtenances are free of fluids.

Question 20: Set of drawings provided, in its Index shows drawings IS01 to 03. They are not present in the drawing collection. Drawings F001 to F007 are included and not index referenced. Please clarify.

Answer 20: F001 to F007 replace IS01 to IS03 drawings.

Question 21: Regarding of the Solicitation page 41, par 2.3 Part III – Past Performance (Evaluation Factor 3), it is written the following, “Offerors must provide at least two (2) and no more than five (5) references.”. And on the Attachment 9 Performance Relevancy Questionnaire (PRQ) the following “Prepare up to two (2) of these documents”. My question is if we can submit up to 5 projects? Or the maximum is just 2 projects.

Answer 21: Minimmum of two (2) and a maximum of five (5) references have to be summited. Please check Attachment with updates.

Question 22: There is no detail for the oil filled, pad mounted transformers installation:

a. Concrete pads?

b. Grounding system?

Answer 22: See Spec 26 12 19.10.

Question 23: There is any existing electrical equipment to be demolished and reinstalled?

Answer 23: Yes. Transformer currently in T-269 (structures shop) and all equipment (38 items) on drawing IE01.

Also, equipment from answer #13.

Question 24: Are the existing electrical panelboards and cabinets to be dismantled and removed?

Answer 24: Yes.

Question 25: There is no reference of the MV cables leaving the new MV switchboard (celas 3, 4, 5, 8, 9, 10).

Please clarify.

Answer 25: Please check Attachment 14 – MV Drawing and answers #8, #9, #10.

Question 26: DWG IE 05, makes reference to a Transformer USA. Is it an existing transformer or it is a transformer to be supplied under this contract? Specify the feeder circuit.

Answer 26: See answer #12.

Question 27: DWG IE 02, makes reference to a lighting control panel. However, there is no detail or specifications for it. Please clarify.

Answer 27: All the information is in IE02.

Question 28: Section 011100 summary of work. It is provided under the above specification section an item list of work. Is the project price limited to these items and quantities of work to be supplied?

Answer 28: No. See answers #1 and #6.

Question 29: What are the dimensions of the existing concrete oil water separator to be demolished?

Answer 29: Width 2.5m x Length 5m x Height 3m Question 30: If contaminated soil is found during excavation works what contaminated soil amount (cubic meters) should be reflected in the proposal?

Answer 30: See answer #18.

Question 31: If hazardous materials other than the identified on contract documents are found, what will be the procedure? How to reflect it on the proposal cost?

Answer 31: A project modification will have to be negotiated.

Question 32: There is no specification and section size for the cable MV transformer (225KVA or 50KVA).

Answer 32: Please check Attachment 14 – MV Drawing.

Question 33:There is no specification and section size for the existing EDA cable feeders.

Answer 33: Cable is 240 mm2. EDA standard installation method - each conductor will be installed in a separate duct (not typical USA practice).

Question 34: Request the submission of the unifilar schemes of the following articles: EI.1.3.2 - Panelboard (CE) & EI.1.3.3 - Panelboard (USA).

Answer 34: See IE05 panelboard (400V) and panelboard (208V).

Question 35: If you can provide a Single-line diagram of the following articles:

EI.1.3.2 Panelboard (CE) EA 1,00 EI.1.3.3 Panelboard (USA) EA 1,00

Answer 35: See IE05 panelboard (400V) and panelboard (208V).