SURVEY AFTER MAJOR LAY UP

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Since the ship was in major lay up and necessary repair have been done, to put it in active service, a reactivation survey has to be carried out to restore its ‘active class status’. The primary objective of a reactivation survey is to ensure that the vessel is fit as per requirements to proceed on intended voyage.
Preparations and trials to be conducted:-
1) HULL AND OUTFIT:-
Class surveyor can ask for dry dock survey. However depending on the date of last dry dock survey and period and condition of lay up, an underwater inspection may be permitted in lieu of dry dock. In addition to hull part following items to be kept ready for inspection –
a) Anchor and chain cables, chain stopper and chain locker pumping arrangement
b) Windlass, mooring winches and roller fairlead.
c) Cargo and machinery space bilges and their pumping arrangements
d) Random cargo tanks, ballast tanks, pump room and cargo piping
e) All items under load line
f) General examination and testing of ship’s whistle, internal communication system, engine order telegraph, general alarm system, steering arrangement and control and navigational lights.
g) Examination of all LSA and FFA items
h) Examination and servicing of ship’s radio installation, gyro, RADAR, navigational aids etc.
i) Tank venting arrangement including closing devices, flame arrestors and P/V valves
2) MACHINERY:- Following inspections should be carried out –
a) Stacks and ventilators covers to be removed and opened up.
b) Boilers, heat exchangers and piping systems to be drained and cleaned of inhibitors and then inspected and tested under operating condition.
c) Engine L.O., stern tube L.O. and steering gear hydraulic oil to be tested for contamination or chemical degradation and flushed and renewed if required.
d) Thrust bearing, line shaft bearing and their lubrication arrangement to be checked.
e) Diesel engine and associated gear to be selectively opened and examined for corrosion, wear and damage etc. crankshaft deflection to be recorded. Protective trips and alarms to be tested.
f) All auxiliary machinery to be tested and their protective device verified.
g) All piping system to be examined and under pressure and pressure relieving arrangements verified.
h) All connections to sea and their respective valves and their expansion joints examined.
i) Fire fighting arrangements including fire pumps to be tested.
3) ELECTRICAL AND CONTROL SYSTEM:-
a) Insulation resistance of all power and lighting ckts together with generators motors and switch gears to be tested and dealt with if necessary.
b) Generators to be tested under operating condition. Switches, circuit breakers and protective devices verified.
c) All essential control system and monitoring instrument and emergency shut offs to be verified.
4) TRIALS:-
In addition to operational tests of individual unit of machinery, dock trials and /or subsequent sea trial to be carried out to the satisfaction of attending surveyor.
5) DOCUMENTATION AND CERTIFICATION:-
The validity of various trading and statutory certificates to be checked and renewal survey to be carried out if necessary.
6) ADDITIONAL ITEMS FOR CONSIDERATION:-
a) Possible changes or revisions in international convention requirement
b) Necessary supplies, spares and consumables
c) Internal corrosion, removal and recoating
d) Cargo gears
e) Mooring lines and hawsers
f) Gangways and boarding ladders
g) Gas/ leak detection apparatus.

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