eprintid: 18152
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/81/52
datestamp: 2024-06-04 14:10:17
lastmod: 2024-06-04 14:10:17
status_changed: 2024-06-04 14:01:33
type: article
metadata_visibility: show
creators_name: Jiwa, M.Z.
creators_name: Kim, Y.T.
creators_name: Mustaffa, Z.
creators_name: Kim, S.
creators_name: Kim, D.K.
title: A Simplified Approach for Predicting Bend Radius in HDPE Pipelines during Offshore Installation
ispublished: pub
note: cited By 0
abstract: Traditionally, subsea pipelines designed for the transportation of oil, gas, and water are constructed using carbon steel due to its strength, toughness, and ability to operate at temperatures up to 427 °C. However, polyethylene (PE), especially its high-density variant (HDPE), presents advantages such as reduced installation costs, diminished water leakage, and superior corrosion resistance. As research endeavours to enhance PE properties, its adoption for subsea applications is anticipated to rise. This study first delineates the mechanical behaviour of HDPE pipelines for offshore installation, identifying pulling tension, dimension ratio, water depth, and air fill ratio as the paramount lay parameters. Subsequently, a theoretical bend radius equation was derived from pipelaying mechanics using a purely geometric approach. Within this equation, two determinants, parameter X and parameter Y, dictate the sagbend bend radius. Regression analysis elucidated the relationships of lay parameters with both X and Y, yielding a general equation for X in terms of pull tension, water depth, and air fill ratio and another for Y as a function of water depth. Together, these geometric determinants underpin the sagbend bend radius estimation model. For overbend bend radius prediction, a lay index (IL) was fashioned from the aforementioned three parameters. Correlation assessments between the lay index and overbend bend radius revealed R2 values of 0.940, 0.836, and 0.712 for pipes with diameters of 2.0, 2.5, and 3.0 metres, respectively. This underscores the model�s proficiency in predicting the bend radius, albeit with decreasing precision for larger-diameter pipelines. © 2023 by the authors.
date: 2023
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85175027837&doi=10.3390%2fjmse11102032&partnerID=40&md5=1f5fd721a32b0dda0e1c12dd0031a971
id_number: 10.3390/jmse11102032
full_text_status: none
publication: Journal of Marine Science and Engineering
volume: 11
number: 10
refereed: TRUE
citation:   Jiwa, M.Z. and Kim, Y.T. and Mustaffa, Z. and Kim, S. and Kim, D.K.  (2023) A Simplified Approach for Predicting Bend Radius in HDPE Pipelines during Offshore Installation.  Journal of Marine Science and Engineering, 11 (10).