Abraham Bagas Suryo Dewanto Sitorus. 363200435. "Efficiency Analysis of Draining
and purging Methods in Cargo Manifold Pipelines on LNG Carrier SS. Tangguh Batur"
With the rapid advancement of technology, the LNG transportation and cargo unloading
processes are expected to run smoothly and safely. This research highlights operational
challenges on the LNG carrier SS Tangguh Batur, specifically the draining and purging
procedures in the manifold pipeline prior to loading arm release. The sudden shift from
the spray line method to the main line without proper valve feasibility and nitrogen
pressure analysis has caused residual methane liquid to remain in the pipeline, delaying
arm disconnection and potentially leading to a Letter of Protest due to berthing delays.
Using a qualitative approach, this study combines direct observations during two sea
practice contracts, interviews with the Chief Officer and Gas Engineer, and reviews of
operational documents. The collected data is systematically organized into a descriptive
narrative. The researcher analyzes the efficiency of the draining and purging methods
used before arm disconnection operations on the SS Tangguh Batur.
The results of this study reveal that the absence of standardized methods and inadequate
procedural socialization are the root causes of obstacles. Key recommendations
include: consistent use of the spray line according to the initial agreement with the
terminal; documentation and display of draining and purging procedures in the Cargo
Control Room; pre-berthing checks on valve conditions and piping systems; as well as
integrated training and cargo meetings to strengthen crew coordination. The
implementation of these solutions is expected to accelerate draining and purging
operations, minimize safety risks, and improve the time efficiency of LNG carrier
berthing.
Abraham Bagas Suryo Dewanto Sitorus. 363200435. "Efficiency Analysis of Draining
and purging Methods in Cargo Manifold Pipelines on LNG Carrier SS. Tangguh Batur"
With the rapid advancement of technology, the LNG transportation and cargo unloading
processes are expected to run smoothly and safely. This research highlights operational
challenges on the LNG carrier SS Tangguh Batur, specifically the draining and purging
procedures in the manifold pipeline prior to loading arm release. The sudden shift from
the spray line method to the main line without proper valve feasibility and nitrogen
pressure analysis has caused residual methane liquid to remain in the pipeline, delaying
arm disconnection and potentially leading to a Letter of Protest due to berthing delays.
Using a qualitative approach, this study combines direct observations during two sea
practice contracts, interviews with the Chief Officer and Gas Engineer, and reviews of
operational documents. The collected data is systematically organized into a descriptive
narrative. The researcher analyzes the efficiency of the draining and purging methods
used before arm disconnection operations on the SS Tangguh Batur.
The results of this study reveal that the absence of standardized methods and inadequate
procedural socialization are the root causes of obstacles. Key recommendations
include: consistent use of the spray line according to the initial agreement with the
terminal; documentation and display of draining and purging procedures in the Cargo
Control Room; pre-berthing checks on valve conditions and piping systems; as well as
integrated training and cargo meetings to strengthen crew coordination. The
implementation of these solutions is expected to accelerate draining and purging
operations, minimize safety risks, and improve the time efficiency of LNG carrier
berthing.
