NEFSC JJH Marine Sciences Laboratory Seawater Intake Line Repair

Description

The National Marine Fisheries Service (NMFS) James J. Howard Marine Sciences Laboratory, located at Highlands, NJ, relies on continuous, uninterrupted seawater delivery to support critical marine research, aquaculture, and experimental habitats. The existing 6-inch Schedule 80 PVC seawater intake lines have experienced operational constraints, requiring immediate targeted intervention on line #2. The objective of this contract is to safely mobilize, inspect, and perform specialized jetting operations in an effort to clear obstructions and restore functionality within seawater intake line #2. The Contractor shall provide all labor, supervision, materials, equipment, tools, logistical support, and marine vessels necessary to complete the inspection and targeted obstruction clearance of seawater intake line #2. The scope is divided into the following primary tasks: Task 1: Mobilization, Logistics, and Site Preparation: Marine & Land Mobilization: Mobilize all necessary workboats, dive support vessels, jetting equipment, and support tools to the James J. Howard Marine Lab waterfront. Safety & Environmental Controls: Implement appropriate safety barriers and environmental controls to protect the local marine environment and conform to Sandy Hook's strict environmental regulations. Task 2: Inspection and Assessment: Line Inspection: Conduct a thorough initial inspection of seawater intake line #2 to locate, identify, and assess the nature of the internal obstructions. Reporting: Document findings and coordinate with the onsite technical representative prior to or during jetting operations. Task 3: Jetting and Obstruction Clearance Operations: Jetting Operations: Deploy specialized marine jetting equipment into seawater intake line #2. Obstruction Clearance: Execute targeted jetting operations in a safe manner in an effort to dislodge, clear, and flush out the identified obstructions to restore line flow. Task 4: Post-Jetting Testing and Verification: Flow Verification: Perform functional flow or vacuum testing on line #2 following jetting operations to evaluate the success of the clearance efforts and verify restored operational capacity. Task 5: Demobilization and Site Restoration: Demobilization: Remove all boats, equipment, unused materials, and temporary safety barriers from the facility and surrounding waters. Site Restoration: Restore any disturbed land, dock, or staging areas to their pre-work conditions.

Key facts

Reference

REQUIREMENTS-26-3483

Procedure

Justification

Contact

Hannah Montoya

hannah.montoya@noaa.gov