Amendment 1 W912ES20Q0026.pdf

W81G6702162164

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)

30-105-04EXCEPTION TO SF 30

APPROVED BY OIRM 11-84

STANDARD FORM 30 (Rev. 10-83) Prescribed by GSA

FAR (48 CFR) 53.243

See the block 14 continuation page for the purpose of this amendment.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 3

16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

16C. DATE SIGNED

BY 16-Sep-2020

16B. UNITED STATES OF AMERICA15C. DATE SIGNED15B. CONTRACTOR/OFFEROR

(Signature of Contracting Officer)(Signature of person authorized to sign)

8. NAME AND ADDRESS OF CONTRACTOR (No., Street , County, State and Zip Code) X W912ES20Q0026

X 9B. DATED (SEE ITEM 11)

03-Sep-2020

10B. DATED (SEE ITEM 13)

9A. AMENDMENT OF SOLICITATION NO.

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

X The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offer is extended, X is not extended.

Offer must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended by one of the following methods:

(a) By completing Items 8 and 15, and returning 1 copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted;

or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN

REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS.

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE

CONTRACT ORDER NO. IN ITEM 10A.

B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date, etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(B).

C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF:

D. OTHER (Specify type of modification and authority)

E. IMPORTANT: Contractor is not, is required to sign this document and return copies to the issuing office.

14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

10A. MOD. OF CONTRACT/ORDER NO.

2. AMENDMENT/MODIFICATION NO. 5. PROJECT NO.(If applicable)

6. ISSUED BY

3. EFFECTIVE DATE

16-Sep-2020

CODE

CONTRACTING DIVISION

USACE - ST PAUL

180 FIFTH STREET EAST

SUITE 700

SAINT PAUL MN 55101-1678

W912ES 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912ES20Q0026

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 1449 - CONTINUATION SHEET

The following have been added by full text:

AMENDMENT 1

The purpose of this amendment is to provide 47 attachments and answer the following vendor questions.

1. Question (Q): Can the Government provide electrical schematics and/or general arrangement drawings for the existing VFD’s and PLC control system?

Answer (A): Yes, see attached.

2. Q: Can the government provide details on the electric motors and/or required performance specifications for the equipment, which is necessary to properly size new VFD’s.

A: Yes, see attached.

3. Q: Is the Dredge Cutterhead VFD Drive model number actually MV3382P6A1A? Could it be MV3382A6A1 instead?

A: The correct part number is MV3382P6A1A.

4. Q: Can VFD components be foreign made (e.g. ABB in Switzerland, Siemens in Germany)?

A: All Qualifying Country components are acceptable. Both Germany and Switzerland are Qualifying Countries. Spare parts and service must be available in the local area of the dredge’s operations.

5. Q: The existing VFD’s do not have an active front‐end for regenerating back to the main AC line. They regenerate to dynamic braking resistors off of the DC bus. Do the new VFD's require an active front‐end for regenerating back to the main AC line? If so, can the dredge hotel load absorb this excess energy?

A: The new VFD do not require an active front end. The new VFDs will be a direct replacement for the current VFDs.

6. Q: The solicitation refers to the swing winch VFD drives when referring to regenerative / dynamic braking.

Do the drives other than the swing winch drives have the same regenerative / dynamic braking requirements?

A: Yes, they have dynamic braking.

7. Q: The solicitation states that the swing winch “drive’s regenerative / dynamic braking shall redirect power back to the main bus.” Does this refer to the AC bus or DC bus?

A: DC bus.

8. Q: Should the Swing Winch VFD's have a common DC bus?

A: Yes.

W912ES20Q0026

9. Q: Do the new VFD's require the same communication protocol and medium as the existing PLC to VFD interface, or can the PLC hardware and software be modified to accept a different protocol and medium?

A: The PLC could be modified if needed.

10. Q: Will the existing VFD cabinets be shipped to the Contractor for installation of new VFD's, or do new VFD's have to be installed in place?

A: The new VFD need to be installed in place. The Dredge will be at the Service Base in Fountain City, WI.

11. Q: Can any existing ancillary items internal to the VFD cabinets be reused if possible and/or practical (e.g.

internal blowers, air conditioning, heaters, breakers, disconnects, transformers, brake contactors, bus bars, wiring, terminal blocks, etc.), or should all items within the cabinets be replaced with new components?

A: Yes. Modifications may be required.

12. Q: Do VFD's require dynamic braking resistors (Swing Winches and other winches as well)? If so, are new dynamic braking resistors required, or can the existing braking resistors be utilized if possible?

A: Yes dynamic brake resistors are required. Yes, existing brake resistors can be utilized if possible.

13. Q: Do existing electric motors have blowers? If so, are new contactors required for the blower motors?

A: The two pump drives motors and cutter motor have blowers. New contactors are not required.

All other terms and conditions remain unchanged.

(End of Summary of Changes)