You need to keep good spares of stainless steel union couplings also known as ermato couplings and a good enough stock of stainless steel tube fittings. Once cargo tanks are gas freed during ballast voyage , make an entry in cargo oil tank and repair the damaged / corroded pipe fitings .Make sure u keep monitoring the hydraulic oil level of hyd tank whilst trying out the valves after repair.
Try opening shutting a few times , if still leak persists you will have to over haul the valve by changing seat ring which usually gets damaged .O rings may needed to be replaced in hyfraulic room if leak there .Keep a number of spare seat rings onboard , and pumpman will do the job
I am not sure about the cost to service the whole system , but we usually do maintenance schedules as per the systems requirements, any leakage of hydraulic oil needs rectification on spot , so we use emergency hand pump through the blocks provided .
Excellent video! Thank you!
Good explanation of Butter fly valves in Oil tankers
Please explain how do u change a hydraulic line if leaking and if a cargo valve fails from operating ,,?
You need to keep good spares of stainless steel union couplings also known as ermato couplings and a good enough stock of stainless steel tube fittings. Once cargo tanks are gas freed during ballast voyage , make an entry in cargo oil tank and repair the damaged / corroded pipe fitings .Make sure u keep monitoring the hydraulic oil level of hyd tank whilst trying out the valves after repair.
Q: if have a leaking. Mean not properly shut. How to adjust disc make a proper shut/close .
Tq
Try opening shutting a few times , if still leak persists you will have to over haul the valve by changing seat ring which usually gets damaged .O rings may needed to be replaced in hyfraulic room if leak there .Keep a number of spare seat rings onboard , and pumpman will do the job
@@skilledsailor tq
Good video 😊
How much does it cost to service the whole cargo valve hydraulic control system
I am not sure about the cost to service the whole system , but we usually do maintenance schedules as per the systems requirements, any leakage of hydraulic oil needs rectification on spot , so we use emergency hand pump through the blocks provided .
Any major servicing will require dry docking of ship as , this is a very tedious process , passes through the tanks and deck area
Do let me know any other queries you may have
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Its bullshit.every seamen has right to learn freely