Volume 8 – Mechanical and Electrical Services - Malaysia Geoportal

Chapter 8 DREDGER
Fuel Tanks
‣ Fuel tanks must be marked in order to warn people that naked flames and heat are
dangerous.
‣ Engine exhausts in the vicinity must be provided with spark arrestors.
Hatches and tank inlets (openings)
‣ Hatches and tank inlets have to be marked and when open they must be cordoned off. All
hinged hatch covers have to be secured against falling back.
Entry into tanks and enclosed areas
‣ A tank or other confined spaces must only be entered if one is certain that it is gas free and
contains sufficient oxygen. If possible this check has to be carried out by an expert (gas
doctor).
Various safety and precautionary measures
‣ The following components must be freely accessible and in good working order :
• Valves and non-return valves in bilge lines;
• Fire flaps in ventilation shafts;
• Emergency stops on winches and the like;
• Quick release valves;
• Watertight doors and hatches.
Floating pipelines
‣ Before starting work on/or inspecting a floating pipeline , ensure the following safety
precautions are taken :
• Inform the Dredge Master or Pipeman and when necessary to stop the pumps;
• A work boat is in attendance;
• The inspector must wear a life jacket or a survival suit (depending on the
circumstances);
• On the work boat someone must standby with a life buoy and line;
• Inspections are preferably carried out during day light hours.
‣ Floating pipelines shall not be used as a way of access to the vessel unless equipped with
walkways with handrails.
8.11 OPERATIONAL TRAINING
The training package for the operators is such that, after the completion of the training, the operators
will have a thorough understanding of the principles of operation of each of the dredging components
and their interaction. They will be able to start-up the dredge after every major shutdown/ overhaul of
the dredge. The package shall, among others, include the following:
a) General introduction to dredging.
b) General construction & operation of dredge pumps.
c) General construction & operation of dredge cutter systems.
d) General construction & operation of spud/ spud carriage (spud system).
e) Operation of winches
f) Operation of ladder
g) Instrumentation and control philosophy operation of the automation system
h) Operation of diesel engines and diesel generator set.
i) Start-up procedure for the dredge inclusive of support/auxiliary facilities of the Dredge
j) Operating philosophy of the hydraulic system.
k) Troubleshooting
March 2009 8-19