Analysis of Heavy Cargo Handling and Multimodal Transportation Method for Air Separation Unit and LNG Regas Project at Amman Mineral

Abstract

Abstract

Heavy cargo transportation for energy-industry projects requires an integrated method involving marine transport, Ro-Ro operation, ballasting, multi-axle trailer movement, lashing, swept path review, and unloading by jacking-skidding. This study develops an engineering assessment of heavy cargo handling for the Air Separation Unit and LNG Regas project at Amman Mineral, Sumbawa, based on XHL-101-JGC Rev.0 method statement. The studied cargo includes a 273.6-ton Main Heat Exchanger, a 231.6-ton MP Column + LP Column, LOX Tanks with a total weight of 441.6 tons, and other heavy lift packages with a combined heavy lift weight of 1,955.2 tons. The method applies an engineering case-study approach covering operational sequence, barge stowage, Ro-Ro and ballasting, inland transport, tractive effort, lashing, swept path, and operational safety controls. Additional calculations were developed using conservative assumptions to complete unavailable data, including 3% rolling resistance, 5% grade resistance, 80% drivetrain efficiency, 3 km/h transport speed, 0.30 friction coefficient, and 5.3-ton WLL D13 chain. The results show that the governing inland transport case of 295.2 tons requires approximately 30.42 ton-force and a minimum engine power of about 417 HP at 3 km/h. The lashing assessment indicates that D13 chains alone are insufficient for very heavy cargo unless supported by stoppers, friction mats, pad eyes, sea fastening, and mechanical restraint. This study provides an applicable methodology for multimodal heavy cargo planning in energy and mining projects.

Kata kunci / Keywords: heavy cargo; multi-axle trailer; Ro-Ro; ballasting; tractive effort; lashing; swept path; ASU; LNG Regas