000007671 001__ 7671
000007671 005__ 20240531164759.0
000007671 02470 $$2doi$$a10.24868/issn.2515-818X.2020.029
000007671 035__ $$a4486788
000007671 037__ $$aGENERAL
000007671 245__ $$aIce-Pigging – A Step Forward in Commissioning Cleanliness
000007671 269__ $$a2020-10-05
000007671 336__ $$aConference Proceedings
000007671 520__ $$aIce-Pigging is a process by which high Ice-Fraction Ice-Slurry is pumped through potentially topologically complex pipe systems to clean them of debris. This paper proposes replacing conventional Water-Flushing with Ice-Pigging for the cleaning of Naval Platform pipe systems pre-commissioning due to the benefits of improved effectiveness and reduced overall flushing time. To demonstrate these benefits a modified Hershel-Bulkley model is developed for Ice-Pigging alongside a Water-Flushing model to simulate the Wall Shear Stresses exerted by each method at a range of velocities and Ice-Fractions. Simulation results demonstrated that Ice- Pigging exerts several factors greater Wall Shear Stresses than Water-Flushing, with the difference increasing as the Ice-Fraction is increased. It was found that the advantages of Ice-Pigging were most prevalent at low flow velocities, where the Yield Stress of the Non-Newtonian Ice-Slurry provided large Wall Shear Stresses, whereas the water not yet in turbulent flow exerted negligible stresses. Thus, for complex pipe paths where it may be difficult to demonstrate high-velocity flow, Water-Flushing would exhibit poor performance, but Ice- Pigging would not be adversely affected. The outcomes support that Ice-Pigging would require significantly less time than Water-Flushing to clean systems to the required specification pre-commissioning, and it would likely remove a greater quantity of debris and particulates, resulting in a more effective overall flush. These advantages provide evidence that implementation of this technology would benefit the timely construction of high-quality Naval Platforms.
000007671 542__ $$fCC-BY-4.0
000007671 6531_ $$aFlushing
000007671 6531_ $$aIce-Pigging
000007671 6531_ $$aNon-Newtonian Flow
000007671 6531_ $$ael-Bulkley
000007671 7001_ $$aWilliams, M$$uMinistry of Defence
000007671 773__ $$tConference Proceedings of INEC
000007671 773__ $$jINEC 2020
000007671 789__ $$whttps://zenodo.org/record/4486788$$2URL$$eIsIdenticalTo
000007671 85641 $$uhttps://www.imarest.org/events/inec-2020$$yConference website
000007671 8564_ $$9287fa0da-c522-4e77-ae99-fd930a5efa62$$s1251653$$uhttps://library.imarest.org/record/7671/files/INEC_2020_Paper_43.pdf