ABOUT THE PROJECT
Weaver’s Cove Energy is proposing to develop the Fall River site as a marine import terminal for LNG deliveries. The project will entail:
- The acquisition of the 73 acre site through exercise of a purchase option with the present owner.
- The design and licensing of an LNG terminal, comprising:
- Ship unloading jetty, capable of receiving standard capacity LNG tankers (typically 145,000 cubic meters)
- A single 200,000 m3 LNG storage tank, (4.3 BCF of gas equivalent), using a “full containment” design
- Vaporization system for 400 million cubic feet per day (MMCFD) baseload send out capacity (800 MMCFD peak capacity)
- LNG truck loading facilities
- The dredging of the Taunton River channel leading to the project site and the expansion and deepening of the turning basin at the site.
- The construction of two pipeline connections between the LNG receiving terminal and the existing Algonquin transmission system by Mill River Pipeline.
The terminal will be designed to accommodate standard capacity LNG tankers, which are typically about 950 feet long, 150 feet on the beam, and have a typical loaded draft of about 37.5 feet. This will involve complete reconstruction of the existing pier facilities at the site as well as dredging operations in segments of the Taunton River and Mount Hope Bay, including the deepening and expansion of the turning basin in front of the receiving terminal.
The project is seeking approval to dredge the channel to a depth of 38 feet at Mean Lower Low Water (MLLW). The berthing area and turning basin will be dredged to 42 feet. Using mid-tide conditions, this should permit the berthing of LNG tankers with draft of up to 38 feet (approximately 11.5 meters).
Preliminary studies show that dredging operations will result in the creation of approximately 2.5 million cubic yards of dredge material. Some of this material will be “native” material that has never been disturbed by man, but most of it will be “maintenance sediment” that has settled into the existing federal channel and turning basin since the channel was last dredged. The chemical and physical characteristics of these various types of dredge materials have been studied to determine appropriate re-use and/or disposal options. One option that the project has investigated is the viability of re-using all the dredge material upland on the project site. If dredge material is placed on the site, it will be used to raise the site elevation, provide a screening landform to visually separate the facility from the adjoining properties and cap the existing soils on the property. A second option under consideration is the disposal of the dredge material offshore at one of the two local federally approved offshore disposal sites.
The terminal will be developed with one LNG storage tank of approximately 200,000 cubic meter capacity (compared to the typical ship's capacity of 145,000 cubic meters ). The tank will utilize the "full containment" design. Essentially, this means that it will be a "storage tank within a storage tank". The inner tank will be constructed from 9% nickel steel  to contain the LNG, surrounded by insulation to minimize heat leaking into the LNG. The outer tank will be a thick-walled, pre-stressed steel reinforced concrete tank designed to contain the LNG in the extremely unlikely event of a leak in the inner tank.
The processing facilities will comprise pumps, piping, heat exchangers, odorization equipment, metering facilities and control systems to transform the LNG from a liquid to natural gas at room temperature and deliver the natural gas to the pipeline grid. Odorant will be injected into the natural gas, as required by law and consistent with U.S. Department of Transportation safety standards adopted by the gas pipeline and distribution companies, since natural gas in its untreated state has no smell. The heat for the exchangers will be provided by a hot water/glycol mixture heated in natural gas-fired boilers. In addition, the terminal will also be capable of loading LNG onto trucks for delivery to satellite LNG peakshaving facilities throughout the region.
Below is a rendering of one possible layout showing the on-site dredge disposal option, incorporating the sculpted landforms .
- Equivalent to about 3.3 million MMBtus, or enough LNG to support deliveries for approximately eight days.
- A type of steel specially designed for low temperature service applications
- The colors in this figure have been selected to highlight the various features of the facility. Please note that surrounding land uses have not yet been incorporated into the computer model.