Eastern Shore Natural Gas, a subsidiary of Chesapeake Utilities Corp., has received Federal Energy Regulatory Commission (FERC) approval to construct and operate its System Reliability Project. The project, as outlined in FERC documents, comprises of approximately 2.5 miles (4 km) of 16-inch (406-mm) diameter pipeline looping in New Castle County, Delaware, USA, (Porter Road Loop); 7.6 miles (12.23 km) of 16-inch (406-mm) diameter pipeline looping in Kent County, Delaware (Dover Loop); and 1775 hp (1324 kW) of additional compression at Eastern Shore’s existing Bridgeville Compressor Station in Sussex County, Delaware.
The US$36 million project is needed to “preserve the reliability and flexibility of its interstate pipeline system.”
According to Eastern Shore, the proposed System Reliability Project will address the observed discrepancies in the design versus actual (1) minimum peak day inlet pressure at the Parkesburg interconnect with Transco; and (2) operating conditions at the Bridgeville Compressor Station, thereby eliminating bottlenecks that resulted in inadequate delivery pressures in the southern portions of its system during the winters of 2014 and 2015 – as low as 440 psig (30.3 bar), whereas its peak day design assumes a minimum of 490 psig (33.7 bar).
The existing Bridgeville Compressor Station design assumes that one 600 hp (447 kW) compressor unit will always be available for operation on a peak day, and another 600 hp (447 kW) compressor unit will be available as a backup. However, actual operational experience requires both compressor units to operate on regular basis leaving no backup compression in its system design.
Project completion is expected by the end of first-quarter 2017.