Attachment A_Statement of Work.pdf

Statement of Work

Miter Gate Strut Arm Steel End Castings

1. Background Information:

The Great Lakes St. Lawrence Seaway Development Corporation (GLS) is a wholly owned U.S.

Government corporation within the U.S. Department of Transportation which operates and maintains that portion of the St. Lawrence Seaway in US territorial waters between Lake Ontario and Montreal, Quebec. A major part of the Corporation’s mission of facilitating the safe and efficient passage of commercial vessels through the Seaway is the operation and maintenance of Eisenhower and Snell Locks which are located in Massena, New York.

2. Mission/Purpose:

GLS is seeking to procure nine (9) new steel gate end castings and a set of casting patterns. The purpose of the new castings are to support the miter gate operating machinery. The castings connect the struct arm to the miter gate in order to open and close it. Recent work on the strut arm assemblies have revealed prior repairs to the gate end casting component, and those repairs have been subsequently damaged again. The components are end-of-life and need replacement.

3. Scope The Contractor shall construct a new set of patterns from the supplied drawing and use these to create nine (9) new gate end castings out of ASTM A27 Grade 70-36 steel. A full set of casting patterns is to be included with shipment of castings as a deliverable. The castings require the creation of built-up internal bronze bushings made of Ampcotrode 150 wire-feed bronze alloy deposited by an electric arc welder (press or shrink fit bushings not permitted). The castings also require secondary machining options to final dimensions on the print. A Quality Assurance sheet shall be supplied with each piece verifying that all drawing tolerances are met. All castings shall also be 100% inspected by Non-Destructive Examination (NDE) and each casting shall be supplied with a documentation sheet showing that they conform to the standards detailed below. Each unit shall be clearly stamped or engraved with a unique serial number on the exterior.

3.1 – Materials:

a. Main Body of Casting: ASTM A27 grade 70-36 steel

b. Internal Bronze Alloy Bushings: “Ampcotrode 150” AWS A5.7-ERCuAl-A3

3.2 – Quality Assurance Sheet:

A sheet showing conformity of all overall and machined dimensions shall be included with each completed casting.

3.3 – Stress Relief Documentation Sheet:

A sheet showing furnace ramp and soak times for all castings shall be included as a deliverable.

3.4 – Non-Destructive Examination (NDE) Documentation:

A test report showing that the steel portions of all nine (9) items have been 100% inspected to both ASTM A609 Ultrasonic Examination and ASTM A903 Magnetic Particle or Dye Penetrant

Examination, and that all nine (9) items passed said standards. Visual inspection will not be permitted as a means of NDE. Offerors may propose an alternative NDE plan in accordance with applicable ASTM standards that are capable of providing 100% inspection of both surface and subsurface flaws. The proposed alternative plan shall be submitted with the bid, and shall include the methods proposed, applicable ASTM standards, and a description of how the proposed plan meets the requirements. This documentation shall be included in the

Manufacturing Plan submitted with the bid.

3.5 – Serial Numbering:

Each casting shall be clearly stamped or permanently marked with date of manufacture and a unique sequential serial number that is visible on the outside.

4. Deliverables

Deliverable Due Date/Frequency Submit To:

One full set of casting patterns Within Period of Performance Include with shipment

Nine (9) gate end castings, including all machining

Within Period of Performance Include with shipment

Quality Assurance sheet for machining operations- one for each casting

Within Period of Performance

Include with shipment

Non- Destructive Examination (NDE) Test Sheet

Within Period of Performance Include with shipment

Stress Relief Documentation sheet Within Period of Performance Include with shipment

5. General Conditions

5.1 – Period of Performance

The awarded vendor must deliver materials by December 20, 2025. The awarded vendor is responsible for all cost associated with delivery.

5.2– Place of Performance

The awarded vendor shall deliver materials to the following address:

GLS Receiving Warehouse

251 Fregoe Road, Massena, NY 13662.

*GLS has limited receiving hours during non- Federal holiday weekdays and limited forklift capability to unload deliveries. Therefore, the awarded vendor must coordinate deliveries at least two weeks prior to delivery and coordinate logistics of unloading materials if requesting

GLS support to unload them.

6. Related Documents

The following documents are related to this requirement:

Drawing Type Title

Technical Exhibit Gate End Casting Drawing