W912P625Q0014 0001 Brake Assembly.pdf

W912P625Q0014

W81G6651149109

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

The purpose of this Amendment is to: A) Post responses to inquiries, B) Revise the product description, and C) Extend the response due date.

1. CONTRACT ID CODE PAGE OF PAGES

J 1 10

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

16C. DATE SIGNED

BY 30-Jun-2025

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 W912P625Q0014

X 9B. DATED (SEE ITEM 11)

18-Jun-2025

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 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

30-Jun-2025

CODE

U.S. ARMY ENGINEER DISTRICT, CHICAGO

231 SOUTH LASALLE STREET SUITE 1500

CHICAGO IL 60604-1437

W912P6 7. ADMINISTERED BY (If other than item 6)

4. REQUISITION/PURCHASE REQ. NO.

CODE

See Item 6

FACILITY CODECODE

EMAIL:TEL:

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION SF 1449 - CONTINUATION SHEET

SOLICITATION/CONTRACT FORM

The required response date/time has changed from 03-Jul-2025 02:00 PM to 11-Jul-2025 02:00 PM.

The following have been added by full text:

SUMMAYR OF QUESTIONS & ANSWERS

Summary of Questions and Answers

Q1: In reviewing the attached specification that was submitted to us I noticed a couple of items that need clarification.

1. Section 6.A.1.3 Brake Torque Min. and Max. states 85 Nm (63 lb./ft.) min. and 400

Nm (295 lb./ft.).

2. Section 6.A.1.4 Brake size states 8-inch The min./max. range stated exceeds the range of the torque spring. Torque springs on a brake have a typical range of 50% to 100% of the maximum rated torque value of the brake.

The maximum torque value of 400 Nm (295 lb./ft.) exceeds the capabilities of an 8-inch brake. A 10-inch brake is recommended.

The size of the brake wheel shown in the photo’s seems to look larger that 8-inches.

A1: The current site conditions have three (3) 8” brakes and one (1) 10” brake, we are looking to convert all into 8” assemblies. Since those are minimum and maximums, the brakes torque maximum can be lower rated than 400Nm (295lb./ft) just not above. That picture might be of the 10” brake I did not receive an answer back from the staff at the site.

Q2: Please measure the outside diameter of the brake drum

A2: Three (3) of the four (4) Drums are 8” in diameter and the other is 10” Diameter, the customer is converting all to 8”. Brakes were measured on June 27, 2025.

Q3: The specification references model Ed 30/5 or EB 300-50 thrusters. Would equivalent thrusters be accepted if the brake meets the torque requirements?

A3: Yes, equivalent thrusters will be accepted as longs as the thrust and stroke match.

Q4: It looks like the solicitation is for (4) of the 8” brakes instead of the (3) 8” brakes and

(1) 10” brake. Is there a reason for this?

A4: Customer wants converted to four (4) 8” brakes.

Q5: The manufacturer has a few clarification requests, including:

I noticed the 85-400Nm torque requirement. Please note that our brakes are manufactured to AIST TR11 specifications, so our 8” brake has a standard max torque rating 220 lb-ft (298Nm). To get to the high end of your torque requirement, we will need to move to a 10” brake and use a special torque spring. Is this acceptable?

Furthermore, our thrusters are rated for 230/460VAC-60Hz. I noticed the 265V low end which would not be within 10%. Is this acceptable? Do you have a mechanical or electrical specification package I could look over?

A5: If the spring applied minimum torque rating is enough to stop the sector gate when de-energized than the AIST Specification brakes will be acceptable. Yes, the voltage rating is acceptable. We do not have a mechanical or electrical package.

Q6: The specifications say the brakes must meet DIN 15435 standard. This is a German standard which would mean the brake would come for a 200 mm brake drum. This is close, but not exactly 8". Do you also want new brake wheels quoted? Or we could quote an 8" brake to the AIST standard

A6: A quote in AIST standard is acceptable as well. No, the wheels do not need to be quoted, just the assemblies.

The following have been modified:

SCOPE OF WORK

USACE CHICAGO DISTRICT OPERATIONS

Thomas J. O’Brien Lock and Dam Sector Gates Brake Assembly Supply

PURCHASE DESCRIPTION

1. GENERAL SCOPE

Supply and deliver four (4) thruster drum brake assemblies.

USACE is seeking four (4) new spring applied electrohydraulic thruster released drum brakes.

The new brake assemblies will retrofit the current torque motor 1950 brake system as the original parts can no longer be procured. To ensure that the new brakes work with the sector gates as intended, specific torque ranges will be needed when energized to fully release the brake shoes from the drum brake to allow the sector gates to travel in the open or close direction. When de-energized it forces the brake shoes against the drum brake so that the sector gates come to a complete stop when intended from control panel at each of the control stands. Please refer to section 6 detailed specifications. The exhibits 1-3 are for reference only.

2. PROJECT DESCRIPTION AND DELIVERY.

Thomas J. O’Brien Lock and Dam is located on the Calumet River and is operated by the US Army Corps of Engineers (USACE), Chicago District. The facility is a unit of the Inland Waterway Navigation System and consists of a navigational lock. The address to the facility is 1831 E 130th Street Chicago, IL 60633. The site can be reached by turning into the access area off 130th Street just past the light at Stony Island Ave. and East of Waste Management Property and continuing past the railroad tracks and following the access road for approximately one (1) mile until reaching the security gates in the visitors’ parking lot. The sites main phone number for further directions and site access is (773) 646-2183.

The brake assemblies will be delivered to the maintenance building at the site address listed above. The facility lockmaster will coordinate the placement of the assemblies and serve as the point of contact for directions.

Prior to delivery, supplier shall provide a submittal showing pertinent details of proposed thruster drum brake assemblies that allows confirmation they are in accordance with requirements listed in the specification section of this scope

3. SCHEDULE

The brake assemblies shall be delivered and unloaded no later than 120 days after the contract is awarded. Delivery shall occur Monday through Friday 0700 to 1600 Central Standard Time.

4. PAYMENT

In addition to following the invoice instructions in the contract, the contractor shall send a copy of the invoice to mark.a.meznarsic@usace.army.mil

5. SPECIFICATIONS

6.A.1. Thruster Drum Brake Assemblies

6.A.1.1. Actuation:

Spring Applied Electrohydraulic Thruster Released

6.A.1.2. Type:

Drum

6.A.1.3. Brake Torque Min. and Max.:

Brake Torque min. 85 Newton meter (N-m) 62 foot-pound (ft.lb) Brake Torque max 400 Newton meter (N-m) 295 foot-pound (ft.lb)

6.A.1.4. Brake size:

8-inch type

6.A.1.5. Brake Release Thruster Voltage Rating:

265/460V +/-10% 60Hz

6.A.1.6. Thruster Sizes:

300 Newton thrust and 50mm stroke

6.A.1.7. Construction:

Supplied with brake shoes and linings installed Come with a wear compensator Fully enclosed thruster Steel construction

6.A.2. Required Documents:

A hard copy Operation and Maintenance Manual shall be provided for the thruster drum brake assemblies. Warranty shall be provided as offered by the manufacturer, with a minimum of 12 months and be provided in writing.

7.POINTS OF CONTACT

TPOC. The Technical point of contact for this project, contractual coordination and administrative oversight for this project is Mark Meznarsic. Mr. Meznarsic contact information is:

Mark Meznarsic Facility Operations Specialist Waterways Project Office 790 E Old Romeo Rd.

Lockport, IL 60441 Gov. cell: 815-508-1310 mark.a.meznarsic@usace.army.mil

POC. The POC for site access to the facility is the Lockmaster, Eric Bolyn. Mr. Bolyn contact information is:

Eric W. Bolyn Facility Lockmaster T.J. O’Brien Lock and Dam 1831 E. 130th Street Chicago, IL 60633 Office: 773-646-2183 Gov Cell: 815-708-3037 Eric.W.Bolyn@usace.army.mil

EXHIBITS

Exhibit 1: Existing torque motor system

Exhibit 2: Existing torque motor system

Exhibit 3: Existing torque motor system

(End of Summary of Changes)