This company also supported us in the subject specialised work. In earlier projects we had worked successfully with DUC-Diving on Urk (Netherlands). This pump assembly was hung from pontoons. Based on these findings, we came to the conclusion that a dredge pump fitted with a suction hose would generate sufficient power for dredging away the consolidated silt. This inspection afforded us insight into the density of the consolidated silt as well as an accurate picture of the situation below the platform. We carried out a diving inspection underneath the lift platform prior to commencing dredging. Due to the poor accessibility of the area underneath the lift platform and near the quay it was decided to commit divers to the dredging operation. These objects were exposed to the risk of damage as a result of dredging operations. The dredging area was enclosed by quay structures and the lift platform. Depending on the tide, there was no or hardly any space for manoeuvring between the underside of the lift platform and the waterline. Apart from the limited width of the ship lift entrance, height was the main limiting factor to be reckoned with. This kind of dredging required a specialised dredging technique. This work involved dredging underneath the lifting platform, the open portion of the ship lift, and the areas in between and behind the guiding system at the mouth of the entrance. In view of plans to recommission the ship lift on the RDM yard, the access channel to the ship lift needed to be dredged.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |