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Scanning Tools Deliver Efficient Survey Outcomes in Construction of Vietnamese Port

Portcoast, the leading port and coastal survey consultants in Vietnam, used Point Cloud data from LiDAR with BIM to create a 3D model of the five-hectare coastal project.

Hyosung Corporation, a South Korean industrial conglomerate, invested a sum of USD 1.2 billion in 2018 in a propane dehydrogenation (PDH) and Polypropylene (PP) complex near Ho Chi Minh City in the Ba Ria-Vung Tau province of Vietnam. The project, a collaboration of the Vietnamese government and Hyosung Corporation, is built in the Cai Mep Industrial Zone in the Tan Thanh district of southern Vietnam, and includes a PDH unit, an LPG storage tank, two PP plants, and a warehouse for both petrochemical and LPG goods. Hyosung seeks to increase its polypropylene market share in Southeast Asian markets with high potential, such as, Vietnam, China, and others.

The construction of the Hyosung Vina Chemicals Port began in 2018 and was completed in March 2020. The construction work was carried out in two phases. Hyosung invested USD 133 million in the LPG tank and USD 336 million in the first PP plant in the first phase, which had a capacity of 300,000 ton/year PP plant. The PDH plant and the second PP line received USD 496 million and USD 226 million, respectively, in the second phase scheduled for completion in 2021.

Portcoast, a leading coastal survey consultant in Vietnam, carried out the 3D mapping for topographic survey to prepare an inspection report for a revetment shielding the jetty, and also constructed an as-built model of the facilities and LPG jetty at the Hyosung Vina Chemicals Port. For this project, the team combined thousands of data points like Point Cloud data from laser scanners, positioning data from GNSS, and coordinate data from Total Station. The area covered in the topographic survey was around five hectares, the major part of which was located in the water. The scanning instruments were placed at elevated locations, which were above the actual site location, to achieve better stability in scanning the area.

Challenges

For the topographic survey covering five hectares of the site area, it was difficult to survey and collect data as much of the area was located underwater. The scanning positions were located among significant traffic flow and ongoing construction areas and posed a major challenge for the survey team. Additionally, the marine loading arm, pipeline systems, liquid tanks, and zones under the access bridge created difficulties in surveying the designated area.

Digitalization and Real-time Information from Project Site

Scanning solutions deliver efficient survey outcomes

The team at Portcoast used varied solutions from Leica, as indicated in the list below:

HardwareFunction/Purpose
Leica ScanStation P50Laser Scanning for over the bridge. Delivered accuracy of 1mm over a distance of 1km
Leica RTC360 and Leica BLK360Laser scanning for under the bridge area — to measure and capture highly detailed data in the complex, narrow and inaccessible areas, such as the liquid tanks, the pipeline systems, access bridge and the marine loading arm.
Leica Cyclone, Leica Cyclone 3DR and Leica Infinity off-sitePoint Cloud management and analysis software used to collect, verify and transfer the point cloud data from the geodetic equipment
Leica CloudWorx for RevitBIM modeling

Leica ScanStation P50 made it possible for the team to have a precise survey accuracy of 1mm for 1km stretch. Given the tropical environment of the area, it was difficult to predict or gauge the weather conditions while conducting surveying activities. The use of Leica Cyclone and Leica Cyclone 3DR enabled the Portcoast team to verify data quickly by collecting the Point Cloud data from geodetic equipment. For inaccessible areas like the area under the access bridge or narrow areas in the pipeline systems, the survey team used a combination of Leica ScanStation P50 along with Leica RTC360 and Leica BLK360.

The use of virtual models using Leica Cyclone REGISTER 360 and Leica Cyclone REGISTER office software enabled the team to explore the site with ease. This also reduced the operational risk and time spent on site, while also predicting in advance the problems and the need to address them.

Project outcomes

The training provided by the Leica Geosystems team helped reduce the overall training time needed by the survey team by almost half. The usual survey works for revetment with a survey grid of 20 meters take around 12 hours. This time was considerably reduced to three hours with the use of Leica ScanStation P50.  Operational risk was reduced by employing fewer members for site work.

Additionally, the port, on completion, is expected to contribute USD 80 million per year to Vietnam’s state budget. In terms of economic benefits, the port construction project is estimated to have generated jobs for nearly 2,000 workers.

Salient Features
Project NameHyosung Vina Chemicals Port
LocationBa Ria – Vung Tau Province, Vietnam
Area10ha; Jetty for 60.000 DWT LPG Tankers
Type of ProjectPetrochemical
Project CostUSD 1.2 billion
OwnerHyoSung Vina Chemicals and Government of Vietnam
Port and Coastal Survey ConsultantPortcoast Consultant Corporation
Insulation ContractorSung Ji Engineering & Construction
Construction Start2018
Completed2020 (Phase 1)

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