Petrochemical Refinery Project

A refinery production unit recently had some rework (welding) completed on a vessel and it was necessary to determine if the vessel met specification which could be determined partly by geometric measurement.   The work area was surrounded obstructions such as scaffolding, piping, processing equipment, catwalks, and support structures (figures 1 and 2), and the plant was in the process of installing insulation over the vessel thus preventing future measurement.

SeaTrepid HDSS deployed a scanning crew that was qualified to all plant safety regulations for that work on short notice and collected the necessary field data (figure 3) for post processing and then delivering 2D (figure 4) and 3D point cloud measurement data.

Using our scanning technology solution, the client did not have to remove any scaffolding, or shut down any other production.  Post processing of the data removed obstructions and compiled a dimensionally accurate model (figures 5 thru 7) which was subsequently used to conduct engineering analysis of the vessel internally and by other engineering organizations.  The vessel was subsequently brought back on line with minimal downtime.

Because measurement of other structures (piping, pipe-racks, etc.) were collected during the primary scanning, the ability existed to accurately model these structures for routing additional pipes or structures without having to redeploy a scanning crew or affecting ongoing operations.

Problem:  A recent refinery fire caused damage to refining towers  and a hazardous materials environment (figure 1).  The client needed to quickly and efficiently determine if the structures could be saved or if the long lead (6 months) items needed to be ordered.

Solution: Substantial clean-up activities were ongoing when SeaTrepid HDSS was contacted to provide a high definition scan of processing towers (ranging in height from 105 ft to 160 feet high),  the measurement data from which would be used to determine if structures needed to be replaced.  With short notice, SeaTrepid HDSS had a scanning crew on site and conducting 3D laser scan measurements– figure 2.  Some of the data was processed real time in order to support day-to-day decisions affecting the ability of the refinery to get back on line quickly. 

Figure 5.  This was accomplished without deploying additional scanning crews and the costs and time associated with it (Mob/demob, expenses, labor, access authorizations, etc.).  This additional data was processed in the office without need to redeploy into the field.

Problem: A historical theater built in the 1920s was being completely refurbished (figure 1).  The contractor needed to measure assorted distances between the walls in order to place an order for the 80 ft steel beam truss which would be delivered in 3 months.  The destined location of the beams was some 40 feet up and precise measurements were required.

Solution:  SeaTrepid HDSS deployed its 3D laser scanning crew to collect comprehensive measurements of the existing structure and to reduce the data to provide the client with the measurements required (figure 3).

BRIDGE
Problem:  Dangerous environment (high speed cars, and restricted access)

Solution: SeaTrepid HDSS measured complete bridge from safe locations while not requiring any need to close the road or redirect traffic.

SANTA BARBARA MISSION:
Problem:  Building was built long ago so no drawing exist.

Solution: SeaTrepid HDSS scanned building façade to provide precise as built measurements.

BEACH EROSION AND ACCESS:
Problem:  Steep cliffs and difficult measurement environment:

Solution:  SeaTrepid HDSS was able to scan the entire cliff and provide precise measurements which will provide historical data for future reference of erosion and current data to provide information required to build beach access (stairs)