Fire crews contain fire in natural gas turbine at Londonderry power plantBy Ryan Lessard
Union Leader Correspondent
August 30. 2018 8:07PM
LONDONDERRY — Crews from multiple communities worked for hours to get an interior fire under control at the Calpine Granite Ridge power plant at 21 Wentworth Ave., according to Londonderry Fire Battalion Chief Mike McQuillen.
“It turned out it was a fire in one of their turbine units,” McQuillen said.
The alarm was activated at 11:20 a.m. and crews got the fire under control at 2:41 p.m.
McQuillen said they used a dry chemical in powder form to extinguish the blaze.
The fire was contained to the two-story turbine room and crews worked with the company to reroute natural gas lines and hydraulic lines feeding to the turbine to prevent the spread of the fire or any potential explosions.
The fire department is still investigating but McQuillen said the cause is likely a mechanical failure which made the machine overheat.
Crews rotated about every 15 to 20 minutes because of the high heat, McQuillen said.
And the rehab team from the Southern New Hampshire Hazardous Materials Mutual Aid District provided hydration.
“Which, on a day like today, was very valuable to us,” McQuillen said, referring to the 80-degree temperature.
The company declined comment.
The Londonderry Fire Department responded at a two-alarm status, which usually calls for the assignment of about six engine companies, a ladder truck and an ambulance on standby.
They received assistance from the fire departments of Derry, Salem, Windham, Auburn, Pelham, Merrimack and Hudson.