激光扫描团队应对炼油厂要求文档

The lead engineer at a large refinery in California, part of one of the world's biggest oil corporations, faced the challenge of upgrading a fluid catalytic cracking unit in a short timeframe.

拥有现有设施的准确，当前造成的目前建造对于确保在没有返工或项目延迟的情况下安装新单元至关重要，但是只需在短短四个星期内就需要提供完整的数据集。使用口袋胶带措施和不对称草图的传统方法是不可能的。

该工程师认为，3D激光扫描是在如此短的时间内收集准确，全面的工厂文档的唯一可以想象的方法，该工程师与F3＆Associates联系，F3＆Associates是一家他知道的公司，该公司是3D扫描和建模方面的专家。他们能提供帮助吗？

技术，团队合作和创造力实现了
The use of high resolution scans and photographs provides the richest possible data set to facilitate the most accurate planning.

Even with the assistance of 3D laser scanners, the team at F3 & Associates knew they would have to be creative to find a way to meet the deadlines. "We pride ourselves on being able to respond quickly, no matter how unrealistic the requirements may seem at first," says Sean Finn, Principal, F3 & Associates. "In this case, we had to condense a project that would normally take two months into half the amount of time."

To accomplish the goal, the team created a strategic workflow that used three Leica High Definition Surveying (HDS) laser scanners working concurrently. The firm already owned a Leica ScanStation C10, which captures up to 50,000 points per second and has a range of up to 300 meters; and a Leica ScanStation P20, which captures up to 1 million points per second at a range of up to 120 meters. Since time was of the essence, the firm rented one more Leica ScanStation P20 laser scanner and used the two high-speed scanners to capture most of the data. In areas that required long-range, high-elevation scans, the team used its Leica ScanStation C10.

"The combination of the two scanner types was great because we could get the C10 working for 45 minutes on a long-range scan while the P20s captured five more scans at the specified high-resolution requirements, plus took photographs," says Finn. The use of high resolution scans and photographs provides the richest possible data set to facilitate the most accurate planning.

Five professionals from F3 & Associates compiled the data, some doing surveying ahead of the scanners to provide ground control while others operated the scanners. Because the team members had been cross-trained on surveying and scanning, they had some flexibility to help each other out to ensure that bottlenecks did not occur. For example, if the associates who were scanning caught up with the survey crew, they took a break from scanning and assisted with the surveying.

更安全的解决方案
While the team was able to capture better information more quickly compared to traditional documentation methods, they also benefited from increased safety. Without laser scanning, they would have needed to use scaffolding and man-lifts to access hard-to-reach areas, but the Leica ScanStation P20 and C10 can document everything from the ground. In addition, because the data collected enables plant managers to plan installations methodically, it minimizes the amount of time that people have to spend in the plant. It's not necessary, for example, to revisit the plant to fill in gaps in the data because the data the P20 collects is so rich. Finn notes, "The less time you spend in the facility, the safer the project."

Keeping the Workflow Simple
Leica扫描仪是石化行业的标准，但芬恩说，由于工作流程的简单性，他也选择使用它们。一旦捕获了数据，F3＆Associates将其下载到Leica Cyclone软件中，这使他们可以快速，轻松地注册高精度云。然后，员工为炼油厂提供了高分辨率注册的点云，并为战略区域提供了3D印刷品，以帮助利益相关者可视化工厂。

Tremendous Time Savings … and More
过去，他们将从要记录的物品的漫长购物清单开始。

Using traditional tools such as pocket tapes and a clipboard, a project of this scale would have taken about six months. Finn estimates that the use of Leica Geosystems' laser scanners, plus their creative workflow, reduced documentation time to one month. However, he adds that without laser scanners, "I'm not sure it would even be possible."

过去，他们将从要记录的物品的漫长购物清单开始。然后，他们将在现场搭配，例如，管架高程，锚固螺栓和关键结构，这些结构将显示工程师从哪里开始和在哪里结束。但是，挑战是要从A点到达。芬恩说。“通过激光扫描，您可以制造管道并知道其要采取的路线，所需的角度点以及接触点的位置。

激光扫描使您可以更自信地构建东西。

Because the refinery obtained such a wealth of information within just a few weeks, they were able to save money on data collection and accurately plan the design, construction and installation of their new catalytic cracking unit, thereby avoiding unnecessary delays and downtime.