The repair scope had the following specifications:
|Structure||Underground firewater system|
|Design Temperature||60 °C|
|Design Code||ASME B16.5|
|Schedule / Wall thickness (WT)||7.04mm to 8.38mm|
|Material and Grade||A53GR B|
|Flange materials/specification||A105N (Quickflange material)|
|Geometory||Connections for new spool - underground|
|Orientation||3 x horizontal and 1 x vertical|
An underground firewater system required a connection spool to be inserted. The location was within a live gas plant so required a no hot work approach. Four flanges, two at DN200, one at DN250 and one at DN300 were required to be installed, with associated onsite machining to be provided.
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