W912P521Q0049 0001.pdf

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

PROJECT: Barkley Lock Hydraulic Cylinders

PURPOSE: The purpose of this amendment is to:

1. Answ er questions submitted by industry

2. Update Technical Specif ications to address industry questions

3. Update FAR 52.252-3, Alterations in Solicitations

3. Extend the quote deadline to 10 September 2021 at 1:00 PM (central time zone).

1. CONTRACT ID CODE PAGE OF PAGES

J 1 3

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

16C. DATE SIGNED

BY 02-Sep-2021

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 W912P521Q0049

X 9B. DATED (SEE ITEM 11)

20-Aug-2021

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 X is extended, 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

02-Sep-2021

CODE

CELRN-RC-N CONTRACTING BRANCH

110 9TH AVE SOUTH, A405

NASHVILLE TN 37203

W912P5 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

W912P521Q0049

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 30 - BLOCK 14 CONTINUATION PAGE

The following have been added by full text:

QUESTIONS AND ANSWERS

1. Industry Question / Comment: Under 2.2 Hydraulic cylinder in the Technical specifications, "All hydraulic cylinders shall be designed to withstand a maximum operating pressure of 3,000 psi with a factor of safety of five based on the ultimate strength of the material."

The drawing indicates A 285 tube material (not very clear) which has maximum Ultimate strength of 75 ksi. I am making sure I did not misinterpret anything here. We recently built two Miter Gate cylinders for

[a different lock and dam] and the cylinder dimensions are very close to the Barkley Lock Gate cylinder.

For the [previous] cylinders we used a factor of safety of two, based on yield strength of the material, at maximum 3000 psi.

Do you have any technical requirements for the Barkley gate cylinder tube, based on yield strength at maximum operating pressure of 3000 psi?

Government Response: The material must be ASTM A285 Grade C with a Tensile strength of 75 ksi.

Specifications have been updated to reflect this change.

2. Industry Question / Comment: Under 2.2.7.1 Metallic coatings, "b. Chromium Coatings - Apply chromium coatings for engineering in conformance with ASTM B177/B177M." Referring to CLAUSES

INCORPORATED BY REFERENCE in "SOLICITATION/CONTRACT/ORDER FOR COMMERCIAL

ITEMS" Ref [DFARS] 252.223-7008 Prohibition of Hexavalent Chromium JUN 2013, page 7 of 47.

The above Chromium plating has Hexavalent chrome hence we used laser cladding on [previous lock and dam] cylinders. We do have chrome plating capabilities [with a subcontractor] and was wondering if we can still quote Hexavalent Chrome plating on the rod. The other alternative is to quote laser cladding on the rod.

Are there any specific technical requirements related to rod coating?

Government Response: The rod must be fabricated using ASTM A564/A564M X-25 with a tensile strength of 125 ksi. Hexavalent chrome plating will NOT be permitted for the rod. Ref 252.223-7008 will be in-forced as a part of this contract parallel to the Specifications. Specifications have been updated to reflect the additional material information.

SECTION SF 1449 - CONTINUATION SHEET

SOLICITATION/CONTRACT FORM

The required response date/time has changed from 07-Sep-2021 05:00 PM to 10-Sep-2021 01:00 PM.

The following have been modified:

52.252-3 ALTERATIONS IN SOLICITATION (APR 1984)

Portions of this solicitation are altered as follows:

W912P521Q0049

Amendment 0001: W912P521Q0049 P00001

PROJECT: Barkley Lock Hydraulic Cylinders

PURPOSE: The purpose of this amendment is to:

1. Answer questions submitted by industry

2. Update Technical Specifications to address industry questions

3. Update FAR 52.252-3, Alterations in Solicitations

3. Extend the quote deadline to 10 September 2021 at 1:00 PM (central time zone).

(End of Summary of Changes)