2-11 Alarm fire in Chicago on Ravenswood Avenue, 12-22-18 (more)

The second of two 2-11 alarms in Chicago on December 22, 2018, occurred at 6417 N Ravenswood Avenue. This was the second fire of the day, and it turned out to be a challenging incident for the responding crews. According to Chi-Town Fire Photos, the call initially started as an E43 dispatch for a rubbish fire. However, the MFAO (Mobile Field Alarm Officer) quickly upgraded the response to a full structure fire. I was already on scene at Clark Street when I received the update and headed over to this location. Upon arrival, firefighters found a one-story auto body shop engulfed in smoke from all sides. They forced entry through a side door (side B), only to be met with heavy smoke and limited visibility. A direct attack was attempted, but the chief ordered a retreat and immediately pulled a box alarm, shifting the operation to a defensive strategy. This was a stubborn fire that made little progress for some time. Due to limited resources and staging challenges, they eventually pulled a 2-11 alarm. Despite the intense flames, the fire was contained to the building, preventing it from spreading to adjacent structures. At the height of the incident, eight hand lines and two aerial master streams were deployed. The fire eventually burned through the roof, but thanks to the efforts of the crews, it didn’t spread further. Here’s a link to the full gallery for more visuals from the scene. [Full Gallery Link] Below are some images captured by Chi-Town Fire Photos during the incident:

Welded Bed Plate For Flanges Of Ship Pipe

The flange welded single-sided seat plate is mainly installed on the top, side wall and bottom of the cabin or cabinet as the entrance and exit of the cabin or cabinet. Valves, accessories or pipes can be installed directly on the single-sided seat plate.

Flange welded single-sided seat plate is suitable for seawater, fresh water, oil, air and steam pipelines below 300 °C. The commonly used nominal diameter is 15~150 mm, and the nominal pressure is lower than 1.6 MPa. The shape of the single-sided seat plate is similar to the corresponding lap-welded Steel Flange.

Flange welded double-sided seat plates are generally used when pipelines pass through decks and tanks, and the two sides of the seat plate are respectively connected to valves, accessories or pipes.
Compared with the single-sided seat plate, the double-sided seat plate has an extra shoulder and double-sided mounting stud bolts. The outer diameter of the shoulder is 10~20 mm larger than that of the corresponding flange, and the thickness of the shoulder is 6~12 mm.
Its scope of application and other structural dimensions are basically the same as those of the single-sided seat plate.
The manufacturing and installation methods of the flange-welded double-sided seat plate are basically the same as the single-sided seat plate, but when the screw holes are drawn, the positions of the upper and lower screw holes of the seat plate must be staggered from each other and must not overlap; deck or bulkhead The diameter of the hole on the top is 2~3 mm larger than the diameter of the seat plate.

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