Attachment II - Statement of Work .pdf

Statement of Work Condenser Installation for Percival Growth Chamber

Person of contact:

Lionel Sugiyama, lionel.sugiyama@usda.gov, office (808) 959-4351 or cell (808) 895-8776

(primary – call/text).

Background or Introduction

The USDA ARS DKI PBARC at 64 Nowelo Street, Hilo, HI requires the installation of a condenser adjacent to the headhouse to covert two (2) Percival Growth Chamber from water cooled to a remote air-cooled condenser.

Scope

Install two Bohn Air cooled condensers, Model DVT-003 (provided) onto an existing 4’ X 8’ concrete pad adjacent to the concrete sidewalk of the headhouse. Provide the necessary electrical and connections needed to move the air to existing Percival Growth Chambers, Model

#PGC-105.

Objectives

To convert two water cooled Percival Growth Chambers, Model #PGC-105 to remote air-cooled condensers. The condensers will be located outside of the headhouse from where the existing growth chambers are located.

Tasks or Requirements

Contractor to:

1) Contractor shall provide the labor and materials to convert the Percival Growth Chambers from water cooling to air cooling using the provided Bohn Air cooled condensers.

2) Place and secure two Bohn Air cooled condensers, Model DVT-003 (provided by government) onto an existing 4’ X 8’ concrete pad (existing). The pad is located on the outside of the headhouse separated by a concrete sidewalk.

3) Electrical: Two service disconnect switches will need to be installed near the condenser units, electrical wiring from the disconnect switches to the growth chamber will need to be installed. There are two other breakers and relays that need to be installed onto the growth chamber panel. Please see the attached electrical diagram from Percival for exact requirements.

4) A single hole or multiple holes will need to be drilled or bored through an approximately

8” thick cement block wall in order to pull condenser piping for the outlet and return along with the electrical wiring from the condenser to the growth chamber.

5) Outlet and return piping from the condenser unit needs to be reduced from 5/8” and 7/8” to 3/8” to match growth chamber inlet and return, per manufacturer pipe reduction will start next to the condenser.

6) Growth chamber refrigeration specifications: refrigerant R-134A, charge to 9.0#, test pressure to 150 PSIG on the high and low side.

mailto:lionel.sugiyama@usda.gov

Delivery

This section states what the contractor must deliver throughout performance with specified delivery dates and/or times. If there are multiple delivery requirements for different tasks, each must be specified individually. This can be expressed by a list of actual dates, number of days after contract award, or a recurring requirement throughout performance (e.g. monthly, quarterly, etc.). The delivery location, person and/or method should also be stated (e.g. the Contracting

Officer’s Representative via hand or express delivery, or the Contracting Officer via email), as well as any confirmation the contractor must obtain to confirm Government receipt of delivery and acceptance.

Government-Furnished Property

1) two Bohn Air cooled condensers, Model DVT-003

2) 4’ x 8’ concrete pad

3) Percival Growth Chambers, Model #PGC-105

Security Requirements

1) Contractor will arrange the dates and access to headhouse and equipment in advance.

2) Work should be performed within the hours of 7 am – 4 pm. If other hours are required, please notify ARS personnel.

3) Will need to follow USDA guidance on entrance to buildings and COVID-19 protocols.

Place of Performance

Work to be performed at the USDA ARS DKI PBARC headhouse, located at 64 Nowelo Street, Hilo, Hawaii 96720.

Period of Performance

60 days after the notice to proceed.