A routine night in Boston's Back Bay area turned chaotic as multiple manholes erupted in smoke and heat, leading to urgent evacuations. But what caused this dramatic scene? Eversource, the utility company, revealed the culprit: a failed electrical cable.
On Tuesday evening, several manholes on Newbury Street became the epicenter of a startling event. A fault in an underground electrical cable resulted in smoke and intense heat billowing from these manholes, prompting the evacuation of nearby buildings. The incident left 14 Eversource customers without power, which was later restored.
Doug Foley, Eversource's electrical operations president, explained that the issue began in a single manhole where a secondary cable connection malfunctioned. This electrical short ignited a fire, highlighting the delicate balance of power beneath our city streets. But here's the twist: Foley noted that the cable was designed for durability, featuring copper and a neoprene jacket to withstand water and temperature extremes.
As crews worked to replace the damaged cable, Foley assured the public that the area was safe, despite ongoing repairs. The incident's impact was far-reaching, with heat and smoke traveling through underground conduits to other manholes, though miraculously causing no further damage.
The Boston Fire Department swiftly responded, evacuating buildings upon detecting carbon monoxide, a telltale sign of electrical burning. Thankfully, no serious injuries were reported. Fire officials described the event as 'explosions,' but Foley offered a nuanced perspective, clarifying it as an electrical fault rather than a traditional blast. He attributed the loud sounds to electricity discharging to the ground, a common phenomenon in such failures.
This incident sheds light on the complexities of maintaining Boston's vast underground electrical network, especially in areas with aging infrastructure. While underground cables are designed to function underwater, they are susceptible to corrosion and wear. Winter weather, including snowmelt and road salt, can exacerbate these issues, as evidenced by this recent failure.
Interestingly, Boston has witnessed similar manhole incidents over the years, some with dramatic consequences. Eversource has since developed innovative 'energy-release' manhole covers to mitigate these risks, ensuring they remain in place during electrical faults. This technology has proven effective, with no reported cover displacements in recent years.
Eversource's efforts to upgrade its infrastructure are ongoing, with a significant portion of work completed in urban centers like Boston and Cambridge. But the question remains: How can we further enhance the safety and resilience of our underground utilities? Share your thoughts below, and let's explore potential solutions together.
