Machine translation from English source
The company tries to dock ships every 2? - 3 years. During the normal dry-docking of a ship following ship approval, major work will be carried out that requires shipyard facilities or is beyond the capabilities of the ship's personnel.
Office/Superintendent. At that time the work will include:
a) Normal docking and repair points.
b) Major changes, if any.
c) Outstanding class recommendations that may require shipyard assistance.
d) Repairs requested by the courts.
Preparation of dry dock specifications
Dry dock repair specifications must be prepared and submitted to the office at least six months prior to the scheduled docking and additional lists must be submitted as necessary. These lists must be prepared separately by deck and engine
Departments and must be completed by the senior director and chief engineer and signed by the captain after his inspection. These should cover all repairs pending under repair schedules and include repairs to accommodation, galley, radio and navigation equipment, hull and machinery repairs, etc. It should then be inspected by the technical superintendent in charge.
In preparing this/provided:
Specification The following considerations/details should be
a) Scheduled maintenance and overhaul items should not be included in the list, but should be included in a separate list of items to be performed by ship personnel during the docking period.
b) For access to carry out repairs/refurbishment of any particular item, any additional work such as removal of piping, rigging, local cleaning etc., if necessary, shall be clearly marked on the item.
c) When equipment must be taken ashore for repairs, this must be indicated.
d) Where applicable, all items should be provided with appropriate sketches for ease of understanding and all piping should be specified with material, length, pipe diameter, flange dimensions, etc.
e) For overhaul/replacement of valves, the type must be specified, i.e. butterfly, shutter or ball, size, material, etc.
f) If repairs require spare parts, all parts must be included in the spare parts request form.
After checking the same by the Superintendent, the office will prepare the final repair specification, a copy of which will be sent to the ship for necessary preparations.
Preparation for repair
If circumstances permit, all practical preparations should be carried out by ship personnel ready (and prior to) the actual commencement of repairs. The above applies to such preparations as cooling boilers, emptying fuel and water tanks, cleaning the areas in which work is to be carried out, emptying cargo tanks of gas for hot work, adjusting the dry docking vessel as required, keeping all marked parts in the yard for ease of identification, etc.
Being well prepared for dock repairs not only reflects good sailing, but also helps keep repair times low, which benefits owners financially.
During the dry dock period
The instructions below must be followed whenever the vessel is drydocked.
a) The vessel must be in an upright position and have a slope of no more than two meters at the stern or as required by the dock master.
b) All hatch covers and covers between decks must be in place.
c) All derricks and cranes must be secured in a longitudinal position.
d) All guards must be properly installed in place.
e) Walkways should be folded down to the sides of the vessel and the pilot ladder should be stowed.
f) All side ports must be locked in the closed position.
g) All restrooms must be locked and keys must be kept on the supervisor's keypad.
h) All main valves on wash water lines must remain closed while the vessel is in dock.
i) The anchor must be securely secured before the bow of the vessel enters the dry dock.
j) The master (captain of the vacancy vessel) must support
Satisfy yourself that adequate fire extinguishing measures are in place
k) Proper notice that the propeller and rudder must be attended to by personnel near the main engine throttle/valves, turning gear and steering wheel immediately after the vessel has ascended to the keel blocks.
Where possible, physical barriers should be installed or mechanisms blocked.
l) The technician must ensure that it has sufficient stability for both docking and undocking.
m) The Master(s) must bring to the attention of all concerned any regulations issued by the drydock authorities.
n) Foreman to ensure that the yard submits a plan of the drydock keel block prior to the vessel entering the drydock to ensure that the blocks are level and correctly positioned to avoid interference between frame spaces, bottom plugs, sonar transmission, etc.
o) All areas that should not be accessible to workers and contractors must be protected.
p) All precautions taken to prevent theft of ship's equipment, including tools, instruments, etc.
Immediately after the dock has dried, the captain and chief engineer in the company, together with the senior officer, must carefully inspect the underwater body of the vessel. The master must pay special attention to any defects in the ship's hull, i.e. hull planking, bilge keel, etc.
The Chief Engineer must carefully inspect the entire sea chest, rudder and rudder bearings, propeller zinc anodes, rod tube sails and all other fittings under water such as pilot tube, echo sounder probes, etc. He must ensure that accurate measurements are taken clearance of the tail shaft / s.
Anchor lines must be checked and carefully checked at every docking.
While the vessel is in dry dock, fuel or water must not be pumped or discharged, and the weight of the vessel must not be changed without the written permission of the dock master. It is the chief mate's responsibility to inform the dock master and make the necessary arrangements for any change in weight that may be required due to repair work.
One hour before flooding the dock, the Senior Director must personally ensure that all drain plugs are firmly in place and that no tape remains on the zinc anodes. The Chief Engineer must ensure that all marine valves are installed and installed correctly. This will be recorded in the ship's deck and engine log. Stem pipe seals should be installed and plugs securely fastened and checked for leaks/leakage upon completion of work.
Each surveyor visiting a ship in dry dock must be accompanied by a superintendent, foreman (master of the vacancy vessel) and/or chief engineer, as appropriate.
