b. Statement of Work-1284LL25Q0058.docx

US Department of Agriculture (USDA)

1284LL25Q0058 Coeur d’Alene Nursery Ammonia Refrigeration System Maintenance and Upgrade

Statement of Work

Contents

Project CDA Nursery Ammonia Refrigeration System Maintenance and Upgrade

General Information

1.0 Scope of Work

This requirement is for the refrigeration system maintenance and the ammonia cooler system upgrades (software and hardware) at the Coeur d’Alene Nursery. The parts and services covered in this will include, but are not limited to: the contractor furnishing of all labor, equipment, supervision, transportation, operating supplies, and incidentals necessary to perform the maintenance and rebuild work specified herein, in compliance with the terms, specifications, conditions, and provisions of this solicitation.

Ammonia refrigeration system components were installed as a new system in 2003 and have been in operation since 2004. Mechanical components of the system have worn out over time due to constant operation since 2004. Currently, some of the system components are not able to operate properly due to age and failure. Service maintenance is required on both the system operating software and a variety of components within the physical system due to software obsolescence, system age, and serviceable parts wear.

The Contractor will be required to supply, install, and test the latest version of the Logix System control software. The current Logix software operating system is 23 years old and no longer supported. Replacement is critical for maintaining safe performance of the refrigeration system. The software upgrade also requires electrical service upgrades to three control panels that contain fuses and electrical switches that control individual room components that regulate storage conditions in each room. A fourth control panel shall be removed from the system because it is no longer needed. The Contractor will be responsible for removing old/unnecessary hardware components.

The ammonia system has a series of pressure relief values that protect the system from damage in the event of a malfunction. The valves need to be changed every 5 years (all the valves (6 Hansen Pressure relief valves) on the ammonia storage tanks are due to be replaced) and the plumbing infrastructure around the two thermosyphon valves need to be corrected to be in compliance with industry standards. A variety of valves and system components in Cooler 11 require replacement, including one (1) three-way valve, two (2) actuators, one (1) fan motor, one (1) defrost valve, and several (1-3) liquid feed solenoids.

2.0 Background

The Anhydrous Ammonia refrigeration system was installed in 2003. It is currently operating on the original software which is 23 years old. Replacement of the software is critical for maintaining the safe performance of the refrigeration system. The software upgrade will also require electrical service upgrades to three control panels that contain fuses and electrical switches that control individual room components that regulate storage conditions in each room. The ammonia system has a series of pressure relief values that protect the system from damage in the event of a malfunction. The valves need to be changed every 5 years; all the valves are due to be replaced.

Contractor Requirements

3.0 Technical Requirements / Tasks

The Contractor must be an experienced Anhydrous Ammonia Service Technician and knowledgeable with the Logix software that operates the refrigeration system. Contractor shall upgrade/update where necessary to ensure full functionality of the system. All new software, hardware, and any alterations made by the Contractor shall be compatible with the existing components. The Contractor shall be capable of performing the removal of valves and other components and successfully installing replacement parts. Contractor must also be capable of understanding how to program the operation of new components in the Logix software that operates the cold storage system. Additionally, the Contractor must be capable of programing new and old components throughout the system with the upgraded Logix software system.

Contractor shall:

· Install and connect the latest version of the Logix System control software as well as all necessary control panel hardware, switches, and fuses. Upgrade electrical connections between 3 Logix control panels in the system.

Contractor shall ensure that control parameters are programmed to the values of the current operation of the refrigeration system. The control panel for the seed freezers shall be deleted from the Logix software with the software upgrade. All old/unnecessary hardware components shall be removed. Test the system to ensure proper functionality after all repairs and updates have been made.

· Replace six Hansen Pressure Relief Valves: two on the High-Pressure Receiver, two on the Low-Pressure Receiver, and two on the Thermosyphon Receiver.

· Replace pressure relief valves on Compressor #1 and #2. Piping on these units will have to be upgraded to current standards. Current plumbing is improper. Contractor shall conduct a relief valve survey and notify the Government once all new valves are installed and operational.

· Repair or replace Cooler 11 failed components (both electric coolant actuators (electrical side), one three-way valve (mechanical side), one fan motor, and one defrost valve.

· Diagnose, repair, or replace any/all failing liquid feed solenoids throughout the entire system using updated like-kind parts (estimated to be between one and three).

Following installation of the above components for the compressors, a report of operational checks and Vibration analysis on the compressors shall be provided to the Forest Service Nursery Manager-Superintendent.

The Contractor shall be responsible to remove and dispose of any materials not required by the Government (will required coordination with the COR). All debris from Contractor operations shall be removed from the site by the contractor prior to final payment being requested.

4.0 Government Furnished

Government-furnished property available for use for this project includes compressor oil. Contractor shall coordinate with the COR for additional information.

5.0 Schedule

Work is estimated to begin on or around September 17, 2025. All work shall be completed no later than November 15, 2025. Any work remaining after October 26, 2025, will need to be scheduled to occur around the Nursery’s normal needs and functions as they begin utilizing the freezer system in late October 2025.

6.0 Contractor Safety

Contractors shall comply with OSHA regulations and provide employees with a work environment that is sanitary and not hazardous, which includes providing personal protective equipment. Contractors must maintain a health and safety plan and an accident prevention program, which includes frequent and regular inspections of the project site, materials, and equipment. Contractors are responsible for their risk management regarding contractor/employee and public safety, which include properly managing hazardous chemicals, including anhydrous ammonia, as required by the Clean Air Act (CAA) Section 112(r). The Contractor will take responsibility to prevent accidental releases of dangerous chemicals like anhydrous ammonia through compliance with CAA’s Chemical Accident Prevention Program. The Clean Air Act designates anhydrous ammonia as a regulated substance for accident prevention. Anhydrous ammonia presents a significant health hazard because it is corrosive to the skin, eyes, and lungs. The Contractor shall be qualified to perform on these systems and comply with all local, state, and federal regulations. Ensure the Contractor and employees are familiar with all aspects of the Chemical Accident Prevention Program (CAA’s), 1) The Risk Management Program (RMP) Regulations, 2) The General Duty Clause, 3) Industry Standards, and 4) Enforcement Focus on Accident Prevention. The Contractor shall refer and comply with the EPA Safety Standards for Ammonia Refrigeration, see the link for details: https://www.epa.gov/enforcement/safety-standards-ammonia-refrigeration

7.0 Contractor’s Key Personnel

Contractor’s key personnel must be qualified to work on Anhydrous Ammonia Refrigeration systems and have a working knowledge of the Logix software program.

8.0 Security Requirements

When the Contractor is on site, they shall check in and out of the Main Office daily. Coordinate with the COR for access. Building locations are on the attached map of the facilities (red box indicates area of work). The nursery is open Monday through Friday from 7:30 am to 4:00 pm and closed on weekends and all Federal Holidays. If the Contractor wants to work outside of these days and times, they shall coordinate with and receive prior authorization from the COR.

9.0 Section 508 – Electronic and Information Technology Standards There is no data generated from the operating system software that is accessible to the public. The computer used for this application is not connected to the Forest Service Network and is for internal use only.

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