Transcontinental Gas Pipe Line Company (Transco), a Williams company, has received US Federal Energy Regulatory Commission (FERC) approval to begin construction associated with its New York Bay Expansion Project. Williams filed its application on July 8, 2015, pursuing an expansion of its Transco interstate natural gas pipeline to provide additional service to the Brooklyn Union Gas Co., which provides local natural gas service to New York City. The New York Bay Expansion Project would provide an additional 115,000 dekatherms of natural gas per day in time for the 2017/2018 winter heating season, enough natural gas to meet the needs of 500,000 homes, according to the company.
As proposed, the project includes the installation of additional horsepower at three existing Transco compressor facilities, in addition to uprating Transco’s existing Lower New York Bay lateral and replacing 0.2 miles (0.32 km) of 42-in. (106-cm) pipe in Middlesex County, New Jersey, USA. The project will also include modifications to existing Transco meter and regulator stations in Middlesex County, New Jersey, and Richmond County, New York, USA.
The project will involve the following facilities:
- Compressor Station 207 – The addition of an incremental 11,000 hp (8206 kW) at Transco’s existing Compressor Station 207 in Middlesex County, New Jersey. This will include installation of a new electric motor-driven compressor unit and associated equipment, gas cooling, and modifications to station piping and valves. Transco seeks authorization to operate the new electric motor-driven compressor unit in excess of 11,000 hp, provided that the total horsepower utilized at the station does not exceed the station’s total certificated horsepower – 26,400 hp (19,694 kW) – upon completion of the project.
- Compressor Station 200 – Increase by 2140 hp (1596 kW) the total authorized station horsepower at Transco’s existing Compressor Station 200 in Chester County, Pennsylvania, USA. The total certificated horsepower for the station will increase from 30,860 hp (23,021 kW) to 33,000 hp (24,618 kW) so that the authorized horsepower matches the total nameplate horsepower of the 13 compressor units at the station. This proposed increase in total station horsepower will not require any modifications to the existing compression facilities.
- Compressor Station 303 – The addition of an incremental 2500 hp (1865 kW) at Transco’s existing Compressor Station 303 in Essex County, New Jersey. This will be accomplished by uprating existing electric compressor Unit 1 from 25,000 hp (18,650 kW) to 27,500 hp (20,515 kW), and modifying the associated gear box. The additional horsepower will allow Transco to maintain pressure commitments to existing customers, the company said.
- Lower New York Bay Lateral Pipeline (LNYBL) – Three segments of the LNYBL in Middlesex County, New Jersey, will be replaced with approximately 0.25 miles (0.4 km) of 42-in. pipe in an adjacent trench within the existing right of way. The replaced 42-inch pipeline segments will be abandoned by removal. This replacement will allow for a pressure uprate of the LNYBL from 960 to 1000 psig (66 to 68 bar).
- Morgan M&R Station – The addition of regulators and an associated building and modifications to station valves and yard piping to maintain pressures at the Morgan M&R station located in Middlesex County, New Jersey.
- Narrows Meter Station – The existing infrastructure at the Narrows meter station in Richmond County, New York, will be modified to accommodate the additional 50,000 dekatherms per day to be delivered at the station. This will include modifications to station valves and yard piping and a new remote terminal unit building.