Attachment A_PWS.pdf

Performance Work Statement (PWS) Replacement of Stainless-Steel Hydraulic Piping at Eisenhower Lock Ver cal Li Gate

1. Background Informa on:

The Great Lakes St. Lawrence Seaway Development Corpora on (GLS) is a wholly owned U.S. Government corpora on within the U.S. Department of Transporta on which operates and maintains that por on of the St. Lawrence Seaway in US territorial waters between Lake Ontario and Montreal, Quebec. A major part of the Corpora on’s mission of facilita ng the safe and efficient passage of commercial vessels through the Seaway is the opera on and maintenance of Eisenhower and Snell Locks which are located in Massena, New York. Maintaining the opera on of a Ver cal Li Gate which raises out of the water in the event of a Miter Gate failure is cri cal to the mission of

GLS.

2. Mission/Purpose:

GLS is seeking a qualified third-party Contractor to replace stainless-steel hydraulic piping at the Ver cal Li Gate. The exis ng piping is installed with carbon steel flanges that have corroded due to the environment the pipe is installed in.

3. Scope:

This project involves the removal and replacement of stainless-steel hydraulic piping that services the Ver cal Li Gate located at Eisenhower Lock, 190A Barnhart Island

Road, Massena, NY 13662. The contractor shall provide all labor, materials, equipment, and supervision necessary to complete the work in accordance with applicable codes, standards, and specifica ons. The hydraulic piping is located within a recessed area beneath removable covers and extends into a confined space—a pit—which must be dewatered for access.

All work requiring system shutdown shall be performed during the GLS annual winter work shutdown period, which begins on or about January 12, 2026, and ends on or about March 13, 2026. Contractors will be allowed to access the site in advance of the shutdown to verify exis ng condi ons and document as-built dimensions prior to system isola on and removal of the Ver cal Li Gate from service. The period of performance will begin on or about December 2nd, 2025.

4. Design Requirements:

4.1 Basis of Design

The hydraulic piping system will u lize 37 Degree Flare-Cone Code 61 type fi ngs for all pipe connec ons. Tube-Mac® 37 Degree Flange and Cone Insert system was used as the basis of design. An equivalent system may be submi ed for evalua on by GLS, provided it meets or exceeds the same performance criteria, pressure ra ngs, reliability, and compa bility with exis ng system components.

4.2 Materials

Piping Material: 304 Seamless Stainless steel, matching the required schedule, diameter, and service condi ons of the exis ng hydraulic system. All piping shall be suitable for hydraulic fluid service and rated for the system’s maximum opera ng pressure.

Fi ngs: All pipe-to-pipe and pipe-to-equipment connec ons shall use Code 61 37 degree Flare-Cone type fi ngs (or equivalent), fabricated from 304 stainless steel, and rated for the system’s hydraulic pressure and environmental condi ons. Fi ngs must conform to Tube-Mac (or equivalent) specifica ons or approved equal.

Valves: All valves to be 316 stainless steel and have Code 61 Split Flanges. Basis of design for hydraulic valves are as follows. Equivalent valves may be submi ed for approval by GLS, provided they meet or exceed performance criteria, pressure ra ngs, reliability, and compa bility with exis ng system components.

2” Size: DMIC, BVHS2000SM2211PZZK

1-1/2” Size: DMIC, BVHS1500SM2211PZZK

¾” Size: DMIC, BVH0750SM2211PZZK

4.3 Fabrica on and Installa on

Pipe sec ons shall be fabricated, flared, cleaned, and installed in accordance with the manufacturer's specifica ons for Flare-Cone systems.

All flaring and connec on work shall be performed using proper tools and techniques to ensure seal integrity and dimensional accuracy.

Support brackets, clamps, and anchors shall be installed as needed to ensure system stability and reduce mechanical stress on fi ngs.

Field-fit modifica ons are expected and shall comply with cleanliness and fabrica on standards.

Valves shall be installed in the same loca ons that they are currently installed.

4.4 Tes ng

A er installa on, the contractor shall:

Conduct pressure and leak tes ng to confirm system integrity.

Flush the system to remove par culates and verify cleanliness.

Inspect all Flare-Cone joints and connec ons to ensure compliance with torque and sealing requirements.

4.5 System Compa bility

The installed piping system must integrate with the exis ng Hydraulic Power Unit

(HPU), hydraulic cylinders, and system controls without modifica on to exis ng GLS equipment.

Final connec ons to the HPU must be completed in accordance with GLS cleanliness and system integrity requirements.

4.6 Applicable Standards

ASME B31.1 – Power Piping

OSHA 29 CFR 1926 – Safety and Health Regula ons for Construc on

OSHA 29 CFR 1910.146 – Permit-Required Confined Spaces

ISO 4413 – Hydraulic Fluid Power – General Rules and Safety Requirements

5. Performance Requirements The contractor shall perform the following tasks:

5.1 Mobiliza on

A end a pre-construc on coordina on mee ng with GLS staff.

Submit required safety plans, confined space entry plan, and work schedule.

Conduct a site visit to confirm field condi ons and verify as-built dimensions prior to the system shutdown.

Remove recessed area covers to access piping systems.

Install necessary barriers, signage, and fall protec on around open work areas.

Dewater and ven late the pit to prepare for safe confined space entry.

Ensure all confined space entry procedures are followed per OSHA standards.

5.2 Demoli on and Removal

Prior to disassembly, the contractor shall safely drain hydraulic fluid into clean, sealed, and labeled containers.

No fluid shall be spilled or allowed to discharge into surrounding areas or waterways.

All recovered fluid shall be passed through a mul -stage filtra on system, capable of removing par culates and water to meet ISO 4406 cleanliness standards (e.g., 17/15/12 or as specified by GLS).

Filtra on logs must be maintained, no ng equipment used, filter specifica ons, and cleanliness verifica on.

Once the new system is installed and cleaned, the filtered hydraulic fluid shall be reintroduced, pending GLS approval.

If fluid is found unsuitable for reuse, the contractor shall propose approved disposal and replacement procedures.

5.3 Installa on

Fabricate and install new stainless steel hydraulic piping per design specifica on.

5.4 Tes ng and Commissioning

Perform pressure tes ng, leak tes ng, and system flushing in accordance with specifica ons.

Assist GLS personnel with system opera onal checks and final commissioning.

Document all tes ng procedures and results.

5.5 Site Restora on

Reinstall all covers and restore the worksite to original condi on or be er.

Remove all construc on debris and waste in accordance with federal and state regula ons.

Submit final as-built drawings and closeout documenta on.

6. Deliverables

Tasks Deliverables Due

Attend Pre-Construction Meeting with GLS representatives.

Within 15 days of award

CLIN 0001 Mobilization

CLIN 0001

Pre-Shutdown Site Access for Field Verification of Measurement

December 2nd, 2025

CLIN 0001

Decommissioning, draining, and disposal of existing pipe

CLIN 0002

Field Fitting, fabrication, and installation of new pipe

CLIN 0003

Testing and Commissioning of VLG Hydraulic System

CLIN 0003 Demobilization

Pressure, Leak, and Flush Test Reports During CLIN 0003

2 As-Built Drawings Within 15 days of commissioning

Hydraulic Fluid Filtration Log During CLIN 0003

Final Project Closeout Report At project completion

7. Period of Performance The work associated with hydraulic piping removal, installa on, and tes ng must be performed exclusively during GLS’s annual winter work shutdown, scheduled to begin on or about January 12, 2026, and conclude on or about March 13, 2026. The total available work window is approximately nine (9) weeks. The no ce to proceed will be issued on or about December 2nd, 2025 in order to give the contractor an opportunity to verify as-built measurements and begin fabrica on of pipe prior to the winter work shutdown.

At the start of this period, GLS personnel will remove the Hydraulic Power Unit (HPU) skid and hydraulic tank for sandblas ng and pain ng. This process will take approximately two (2) weeks, during which me the contractor may proceed with access setup, fluid recovery, demoli on, layout verifica on, and piping fabrica on/prep. Reinstalla on of the HPU will be coordinated to allow for final system connec on and commissioning.

Contractors are permi ed and encouraged to conduct field verifica on and dimensioning prior to the shutdown period, coordinated through GLS staff.

8. Government-Furnished Equipment, Property, and Services GLS will provide the following resources and services:

Access to the job site and secure work areas

Exis ng system drawings and documenta on

Coordina on for li gate and hydraulic system isola on

Removal and reinstalla on of the HPU skid and tank

U lity access for temporary power and water

Hydraulic Power Unit Skid and Hydraulic Tank removal, blas ng, and pain ng

At the start of the project, GLS personnel will remove the exis ng Hydraulic Power

Unit (HPU) skid and hydraulic tank from the system to perform sandblas ng and pain ng opera ons. This work is an cipated to take approximately two (2) weeks and will occur concurrently with ini al contractor ac vi es such as dewatering, access prepara on, and demoli on.

The contractor shall coordinate closely with GLS to ensure their ac vi es are sequenced appropriately around the temporary absence of the HPU skid and tank.

During the sandblas ng and pain ng period, no hydraulic reconnec ons to the HPU shall be a empted.

The contractor may proceed with pipe removal, layout verifica on, fabrica on prep, and access work during this period.

GLS will reinstall the HPU skid and tank following comple on of surface prepara on and coa ng work.

The contractor shall coordinate final hydraulic piping connec ons once the

HPU is back in posi on.

Reconnec on must be completed in accordance with proper cleanliness and system integrity standards.

9. Safety and Environmental Requirements

All work shall be conducted in accordance with applicable OSHA regula ons, GLS safety policies, and federal/state environmental regula ons.

The confined space within the pit shall be treated as a permit-required confined space under 29 CFR 1910.146.

Appropriate fall protec on must be used at all open trenches and recess areas.

All waste, including hydraulic fluid, filters, and removed materials, must be handled, and disposed of according to applicable laws and regula ons.

A designated safety officer must be present on-site during all confined space entries and hydraulic system work.

10. A achments

326-CS-24-1 Ver cal Li Gate Opera ng Machinery Sec onal Eleva on

SLS-313 Eisenhower Locks, Ver cal Li Gate, Hydraulic Piping

Ver cal Li Gate Pipe Project References Photos and Sketches.pdf

DMIC Ball Valve Cut Sheet.pdf

Tube-Mac Flange Specifica on.pdf

Hydraulic Schema c 41383-HYD.pdf