DRAFT Specifications.docx
DOCX document 43 KB Posted
- Solicitation number
- 12905B24SS0060
About this file
This document is a draft Specifications attachment for an Oyster Broodstock Repository Raft to be located at the USDA-ARS Pacific Shellfish Research Unit in Newport, Oregon. The raft is required to be approximately 40 feet by 30-35 feet, made of corrosion-resistant material, and capable of holding 170 oyster cage stacks. It must have gantry cranes capable of lifting and moving the cage stacks, and secure bridle attachments to prevent the ropes from falling into the water during severe weather. Preferred raft features include fiberglass reinforced polymer walkways and railings.
This Specifications document is related to a USDA-ARS Sources Sought notice for qualified vendors to provide an Oyster Broodstock Repository Raft meeting the stated requirements. The Sources Sought is for market research and information gathering purposes only, not a solicitation for proposals. Responses should include company capability statements, relevant past performance, and other information to demonstrate qualifications, but no pricing. After reviewing the responses, the government may issue a combined synopsis/solicitation.
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Attachment 1 – Specifications
Oyster Broodstock Repository Raft
USDA-ARS Pacific Shellfish Research Unit (PSRU) (Newport, OR)
Equipment need: An oyster broodstock repository raft to grow shellfish produced by the USDA ARS PSRU. A design-build-install service is required for this repository raft.
Dimensions: approx. 40 feet by 30-35 feet. Final dimension is negotiable based on design produced by fabricator.
Attachment points: Three steel pilings that anchor the Hatfield Marine Science Center (HMSC) pumphouse dock. The pilings are 20 feet apart from each other. The use of pile guide attachment is highly preferred for this raft.
Physical description: A floating mussel raft like structure that is made from corrosion resistant material which is capable of holding 170 oyster cage stacks. The HMSC dock is approx. 2 miles from open ocean and has full salinity seawater (approx. 33 ppt) nearly continuously. As such corrosion is a major concern at this site.
Gantry crane(s) must be installed that are capable of lifting at least one cage stack, then travelling towards the dock where cages can be placed onto the deck of the dock for processing. Each cage stack holds 6 SEAPA cages with 600-1000 animals per stack (estimated maximum weight 600-1000 pounds per stack, including biofouling). Electricity for gantry cranes is available in the HMSC pumphouse, approximately 75 feet from the middle of the raft site.
Bridle attachments on the repository must be secure such that the rope bridle does not come loose and fall into the water during severe weather, wind and wave events. The SEAPA cage stacks measure approximately 4.5 feet tall, 2.2 feet long and 1.33 feet wide. To provide adequate lifting space the USDA technical lead estimates that each stack needs 30 inches of length (4 inch buffer between cage stacks) between bridle attachments on a single cross member. The cross members are estimated to require 24 inches of width between them (8 inch buffer between cages), except for cross members next to floatation pontoons, where 18 inches is likely required.
The use of fiberglass reinforced polymer (FRP) walkways or other non-slip surfaces on the raft is preferred, as are railings or other grab bars that staff working on the raft can use to steady themselves.
Below is a crudely drawn aerial representation of the raft. Dark blue are floatation pontoons, brown are cross members where cage stacks hang from, with light blue sections representing walkways.
image1.emf
File details come from the government source that posted it. Updated .