Cryogenic Temperature Measurement for LNG Loading

Orme, Thomas (2018) Cryogenic Temperature Measurement for LNG Loading. [USQ Project]


The aim of this dissertation is to research and design a non-intrusive temperature measurement system to measure the temperature profile of a Liquid Natural Gas (LNG) loading arm during cooldown. The intent is that the system can be implemented post construction to assist the operators during their cooldown duties giving them a clear idea of where the LNG is in the loading arm. This will assist them to cool down the loading arms efficiently and reduce the risk of thermal shock and split seals causing loss of containment.

Temperature data was gathered from two marine loading arms during the cool down of the vessel ‘LNG Barka’. This data was used to develop a temperature profile of the arm during cooldown and identify areas which could be optimised to save time during cooldown. A wide range of cryogenic temperature sensors and transducers were investigated and assessed for their measurement abilities and suitability for integration into the current site infrastructure and hazardous area zoning.

A wireless mesh network of pipe clamp resistive temperature devices (RTD’s) was designed and priced up for implementation on site, the restriction on budget and time frame for this project made the purchase and implementation on site not viable. Approximations for cool down time optimisation, cost savings and reduced safety risk were calculated using Chevron Australia Pty ltd 2017 revenue and production data. The payback time for the designed system is estimated to be less than six months.

Statistics for USQ ePrint 40678
Statistics for this ePrint Item
Item Type: USQ Project
Item Status: Live Archive
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering (1 Jul 2013 - 31 Dec 2021)
Supervisors: Hill, Catherine
Qualification: Bachelor of Engineering (Honours) (Electrical and Electronic)
Date Deposited: 29 Aug 2022 23:07
Last Modified: 29 Jun 2023 02:25
Uncontrolled Keywords: Liquid Natural Gas (LNG); cryogenic temperature; measurement

Actions (login required)

View Item Archive Repository Staff Only