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Open sea oil terminal at Yanbu - KSA.

PROJECT:  Open sea oil terminal at Yanbu - Kingdom of Saudi Arabia.

CLIENT: Triton Consulting engineers Ltd.
ASSOCIATED OFFICES: Triton Consulting engineers Ltd./ M. Kavvadas /SAUDI ARCHIRODON

PROJECT:  Open sea oil terminal at Yanbu - Kingdom of Saudi Arabia.

CLIENT: Triton Consulting engineers Ltd.
ASSOCIATED OFFICES: Triton Consulting engineers Ltd./ M. Kavvadas /SAUDI ARCHIRODON

BRIEF DESCRIPTION:
 
Structural design of an open sea oil terminal with ship capacity from 20000DWT to 100000DWT designed to serve a power and desalination plant at Yanbu (Red Sea), Kingdom of Saudi Arabia.
The project consists of:
  • One unloading platform 24.00x32.00m2, equipped with four unloading arms, gangway, fire fighting towers, etc, and the ability to operate on it a mobile crane of 50 tones. The platform consists of prefabricated and cast in situ reinforced concrete and supported on steel piles D914 at sea depths of 25.0m.
  • Four breasting dolphins equipped with fenders of 3300kN operation and QRMH load of 2650kN. Each dolphin is in plan 11x16.3m2 of prefabricated and cast in situ reinforced concrete supported on steel piles D914 at sea depths of 25.0m.
  • Four mooring dolphins equipped with QRMH of 2650kN. Each dolphin is in plan 10x10m2 of prefabricated and cast in situ reinforced concrete supported on steel piles D914 founded on an underwater reef with depths varying from 3.00 to 17.0m
  • A control building platform 36.0x36.0m2 to support a 3 story RC building covering, in plan, almost fully the platform with very heavy floor live loads (up to 15kPa). The platform consists of prefabricated and cast in situ reinforced concrete and supported on steel piles D914 founded on an underwater reef with depths varying from 3.00 to 25.0m.
  • An access bridge with total length 200m, width 13.5m (19.8m locally for a length of 20.8m) in the first 173m and 15.3m in the rest. The bridge carries 2x42” oil pipelines, facilities for the unloading platform and the control building, access road with two lanes of heavy traffic with additional capacity to operate a mobile crane of 50 tons load throughout the road surface. In addition, during the construction phase, there is a preview to be supported a tower crane. The bridge consists of prefabricated and cast in situ reinforced concrete with typical spans of 18.5m, supported of steel piles D914 founded for the first 173m in depths of about 4.0m while the remaining part is on an underwater reef with depth up to 22.0m.
  • An auxiliary platform for tug vessels 26.5x12.3m2 in plan able to carry heavy traffic loads on deck, with berthing / mooring forces 430 / 800kN respectively. The platform consists of prefabricated and cast in situ reinforced concrete and supported on steel piles D914 founded on an underwater reef with depths varying from 3.00 to 15.0m.
  • An access bridge to auxiliary platform 39.0m long in two equal spans and width 8.25m. The bridge caries a two lane road with heavy traffic loads. The bridge consists of prefabricated and cast in situ reinforced concrete and supported on steel piles D914 at sea depths of about 3.0m.
  • Four one span steel catwalks with spans 51.7m and 34.2m and typical width 1.10m.
  • Four one span RC catwalks with spans 15.2m and 8.1m and typical width 1.60m.
 
Design loads, except for berthing and mooring loads, include open sea waves, currents, temperature and earthquake with spectral acceleration of 21.3% g.

The project has been completed.

Design years: 2013-5
Design standards: EN 1990 /BS 6349 / ASCE 7-10

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