Yes, you can. Keep on reading within your reach... onboard or during vacation. Do not hesitate to ask your senior ranking officers. Some may not be that willing to teach. However, lots publication and manuals can be accessed on board, in the net, downloadable maritime apps, tons of UA-cam channels. No one can take that away from you. It exclusively yours to decide to learn or not, with a teacher or none... either way you can and you will. You can ask the Chief Mate or Master to give you a copy of the cargo estimate request then try to compute on your own. Then at a convenient time ask your Chief Officer to check it or compare his calculations with yours ...its one step to gain confidence.
If its related to you, post a suggestion or question for me to further explain and expound topics that I may have not included. Appreciate much if you could share to those who are interested and may learn from it. Tks
Sir thank you for sharing your knowledge in gas tanker, sana ma feature nyo din kung papano mag compute ng required quantity ng coolant kasama ung required quantity ng pang gassing up.thanks a lot.
If you download the software I created for educational purposes you will find there under LPG an automatic calculation to find the quantity for Gassing up and Cooling. However, under normal circumstances, most practices is based on Gas Form C where the value is there as written already. Other method is just mimic what the record shows or used by the Chief Officer you relieved. If i find sometime I will show how to do it manually.
@@ShipAhoyVlogs sir how will i able to find that software regarding my concern, i would appreciate sir if you can share, again thank you so much such an amazing videos i am looking forward for your next content sir.
@@johnlesternatividad5223 look for the video uploaded about Cargo Calcs and Survey. or I think 3rd vided from recent upload and 1st or 2nd video dated 2016.
I have an ebook LPG for mercs that is useful to use inline with the software here is the link: www.dropbox.com/s/8oei8zbuqtgi6iw/LPG%20ShipEbook.rar?dl=0
Ammonia cannot be mixed up or replaced with Inert Gas as they will react to each other. Ammonia instead is purge or Gas freed with Air and has nothing to do with Inert Gas. Hence, if it's gassing up then Ammonia is introduced on top to replace air, whilst if doing aeration then Air is introduced into the bottom. That is if displacement method is used.
@@ShipAhoyVlogs sorry I meant, before you gas up for liquid ammonia product, do you inert your ship tanks? or only purging with air? would the O2 in the air cause an issue?
sir sorry but i have doubt....after inerting all the compressors how would you purge the lpg gas back before running compressors as inert gas is considered as incondensable. all this sir i am asking after gassing up operations. maybe it is a silly doubt but thanks
the same thing as you inert. Gassing up follows and all the system are purge with the cargo or gas. though you cannot avoid and it wont be 100 percent gassed up. pockets of incondensable will still be left and expect that the performance in the early stages of loading when the plants are commissioned will slowly cope up.
LPG cargoes are loaded thru the deck storage tank or directly from manifold and thru the vaporiser where it is basically sent thru all the tanks and associated systems. other methods is to load a considerable amount into the tanks and stir it up with pumps and let the gasses finds its way (applicable with semi-press/fully ref type). once tanks are done the gases can be diverted to compressors, etc. hence the use of gas measuring device is important. we will also open drain valves just to make sure gasses is passing thru but this has to be done cautiously especially inside the compressor rooms if drain valves are loosened. this only to check if gas managed to purge the compressors.
The design and piping layouts is another important factor to consider. When you purge lines, whether gassing up/inerting/gas freeing it doesn't mean that because its open and its where you directed the flow....do not expect that this would smoothly and completely purge the entirety of the cargo system, some Gases maybe trapped in spool pieces, curves and bellows even the cargo tanks where transverse bulkheads and beams may still have it in small amounts. Same thing applies in the compressor rooms, etc.
doubt is a good thing if you put it in the right perspective. its okay to doubt especially with Cargo operations. this is basically tells you to think and analyze so do not ask for apology or "sorry sir". This what learning is all about. At the end of the day. I could be lecturing the wrong way. So its a good thing to scrutinize, suggest, criticize and just layout if you think you need more explanation.
Typically you have on some ships device called “purge condenser”. Normally it would be used if condensing pressures for cargoes after last stage of compression for given temperature are not corresponding to normal condensation pressure. Higher condensation pressure will indicate for you presence of incondesibles. Easy way to start after gassing-up is to run compressors on lower load (typically on 25 or 50 load capacity) and then to manually relief pressure back to tank for some time until you get first condensate. Then you can start running plant on full capacity and vent a bit of pressure from condenser back to tank to allow plant to run without stoppages. If purge condenser existing - engage it and set relief pressure at about 0.5 bar higher than condensing pressure of your cargo. Continue venting until you get proper condensation pressures, constant condensate delivery and steady compressors parameters. Note that due to venting you’ll lose a bit of cargo. As a Chief Officer I always followed this procedure and always succeeded during initial stages of cooling after gas up. Also consider that the higher condensation presssure - the harder to get rid of nitrogen and “purge” your tanks, for example with ethylene molecular weight of which is very close to nitrogen.
Hello Chief Can CNG using for Gussing Up.. As option we dont have the LNG.. Please advised.. The Gassing Up for LPG. Any refrences/Guideline ..Best Regards.
I have not experienced such. Technically, since it is compressed then its cold and that you need to pass it to a heater or vaporizer to farther warm up. Gassing up temp should at least closed to the ambient temperature of your containment else it would take a long time. I have not seen any references/Guidelines. I have no idea, this is just a theory I have. Pls do not use it as advise.
There is an app with a download link in some of the videos uploaded. It was a software that runs in Windows OS that I created 5 yrs ago. You will find there the solution. However, in most cases, there is a Gas Form C and Manuals on board with given value for such quantity to load. Which there is not a need for formula.
@@gabrielebambino6083 I will make a new edition for such software. The one that is downloadable has no printing features or disabled. If i find time, I might recreate it since the original source code was corrupted though starting from scratch is holding me back. so its just on the pipeline i guess.
Generally, I agree with you sir. Although some companies who operates both variety of Bulk & Tankers offers the same salary whichever vessel assignment they are into. However, it is most applicable to the engineers and Master for cross crewing/manning. Hence, its easier when shortage of manpower is on hand. Still is a profound statement just as you said so. Pls suggest and appreciate much if if you could scrutinize as well if I missed out some things.
@@ShipAhoyVlogs I'm only a newbie sir on a gas carrier but the way I see it coming from a ship handling dry cargoes, chief officers job on tankers are quite complex, with all the explanations you presented. Plus gas carriers or generally tankers are more expensive to build hence skills for these type of ships are paid more.
Liquid can be supplied via Manifold from shore then thru Vaporizer and to the Cargo tanks. Same with STS if done off port. Else, if your Ship is Semi Pressurized & Fully Ref then a certain amount of liquid can be directly loaded to one tank but it has to be done gradually as the tanks are not cooled down yet. This has been done in practice, sometimes you don't even need to pump thru the vaporizer, we just let the liquid boils off, open other tanks in series which eventually will be gassed up. Again, this depends on your cargo containment type.
The method done directly to the tanks are most applicable on Ethylene ships. Especially that the Inerted Atmosphere is Nitrogen and not the typical IGS, so even if it isn't gassed up yet and not cooled down, the containment is more robust and hence forming of solid particles are not common since it was purged with 99% N2. Please check your ships P and A Manual. Else, your Operation department will instruct your vessel accordingly.
@@narierivera8414 Coming soon. pls be patient. Kindly share and invite others. If you think its worth learning from. I will be more motivated to continue and upload whatever there is to discuss. Engine side will also be part of my features. There are pool of experts to present like Chief Engr and other ranks for each respective subject matter.
Excellent work Sir ! I am a sailing Master mariner and I find your explanation very smooth and simple . Thanks a lot Sir .
Lots of love and respect from India .🫡🫡🫡
I am glad you like it.
Thank you very much for such a detailed explanations.
Love from India.
You're most welcome!
Looking forward to met you in person..I admire your vlogs sir! Aspiring Chief off here
Yes, you can. Keep on reading within your reach... onboard or during vacation. Do not hesitate to ask your senior ranking officers. Some may not be that willing to teach. However, lots publication and manuals can be accessed on board, in the net, downloadable maritime apps, tons of UA-cam channels. No one can take that away from you. It exclusively yours to decide to learn or not, with a teacher or none... either way you can and you will. You can ask the Chief Mate or Master to give you a copy of the cargo estimate request then try to compute on your own. Then at a convenient time ask your Chief Officer to check it or compare his calculations with yours ...its one step to gain confidence.
Thankyou for sharing your knowledge sir. godbless
If its related to you, post a suggestion or question for me to further explain and expound topics that I may have not included. Appreciate much if you could share to those who are interested and may learn from it. Tks
Sir thank you for sharing your knowledge in gas tanker, sana ma feature nyo din kung papano mag compute ng required quantity ng coolant kasama ung required quantity ng pang gassing up.thanks a lot.
If you download the software I created for educational purposes you will find there under LPG an automatic calculation to find the quantity for Gassing up and Cooling. However, under normal circumstances, most practices is based on Gas Form C where the value is there as written already. Other method is just mimic what the record shows or used by the Chief Officer you relieved. If i find sometime I will show how to do it manually.
@@ShipAhoyVlogs sir how will i able to find that software regarding my concern, i would appreciate sir if you can share, again thank you so much such an amazing videos i am looking forward for your next content sir.
@@johnlesternatividad5223 look for the video uploaded about Cargo Calcs and Survey. or I think 3rd vided from recent upload and 1st or 2nd video dated 2016.
lakay ka ba?
I have an ebook LPG for mercs that is useful to use inline with the software here is the link: www.dropbox.com/s/8oei8zbuqtgi6iw/LPG%20ShipEbook.rar?dl=0
in 7:50 - can you explain what happen when you are dealing with ammonia? as ammonia is lighter than the inert gas? thank you for all the videoes!
Ammonia cannot be mixed up or replaced with Inert Gas as they will react to each other. Ammonia instead is purge or Gas freed with Air and has nothing to do with Inert Gas. Hence, if it's gassing up then Ammonia is introduced on top to replace air, whilst if doing aeration then Air is introduced into the bottom. That is if displacement method is used.
@@ShipAhoyVlogs sorry I meant, before you gas up for liquid ammonia product, do you inert your ship tanks? or only purging with air? would the O2 in the air cause an issue?
@@hazza11235 No need to inert the tanks when Gassing up with Ammonia. The tanks must be filled with Air, dry air. O2 does not cause an issue.
Where can I download such Cargo Handling Simulator?
Nope you can't download. It's a mimic semi sim that I created for myself some years ago.
sir sorry but i have doubt....after inerting all the compressors how would you purge the lpg gas back before running compressors as inert gas is considered as incondensable. all this sir i am asking after gassing up operations. maybe it is a silly doubt but thanks
the same thing as you inert. Gassing up follows and all the system are purge with the cargo or gas. though you cannot avoid and it wont be 100 percent gassed up. pockets of incondensable will still be left and expect that the performance in the early stages of loading when the plants are commissioned will slowly cope up.
LPG cargoes are loaded thru the deck storage tank or directly from manifold and thru the vaporiser where it is basically sent thru all the tanks and associated systems. other methods is to load a considerable amount into the tanks and stir it up with pumps and let the gasses finds its way (applicable with semi-press/fully ref type). once tanks are done the gases can be diverted to compressors, etc. hence the use of gas measuring device is important. we will also open drain valves just to make sure gasses is passing thru but this has to be done cautiously especially inside the compressor rooms if drain valves are loosened. this only to check if gas managed to purge the compressors.
The design and piping layouts is another important factor to consider. When you purge lines, whether gassing up/inerting/gas freeing it doesn't mean that because its open and its where you directed the flow....do not expect that this would smoothly and completely purge the entirety of the cargo system, some Gases maybe trapped in spool pieces, curves and bellows even the cargo tanks where transverse bulkheads and beams may still have it in small amounts. Same thing applies in the compressor rooms, etc.
doubt is a good thing if you put it in the right perspective. its okay to doubt especially with Cargo operations. this is basically tells you to think and analyze so do not ask for apology or "sorry sir". This what learning is all about. At the end of the day. I could be lecturing the wrong way. So its a good thing to scrutinize, suggest, criticize and just layout if you think you need more explanation.
Typically you have on some ships device called “purge condenser”. Normally it would be used if condensing pressures for cargoes after last stage of compression for given temperature are not corresponding to normal condensation pressure. Higher condensation pressure will indicate for you presence of incondesibles. Easy way to start after gassing-up is to run compressors on lower load (typically on 25 or 50 load capacity) and then to manually relief pressure back to tank for some time until you get first condensate. Then you can start running plant on full capacity and vent a bit of pressure from condenser back to tank to allow plant to run without stoppages. If purge condenser existing - engage it and set relief pressure at about 0.5 bar higher than condensing pressure of your cargo. Continue venting until you get proper condensation pressures, constant condensate delivery and steady compressors parameters. Note that due to venting you’ll lose a bit of cargo. As a Chief Officer I always followed this procedure and always succeeded during initial stages of cooling after gas up. Also consider that the higher condensation presssure - the harder to get rid of nitrogen and “purge” your tanks, for example with ethylene molecular weight of which is very close to nitrogen.
Hello Chief Can CNG using for Gussing Up.. As option we dont have the LNG.. Please advised.. The Gassing Up for LPG. Any refrences/Guideline
..Best Regards.
I have not experienced such. Technically, since it is compressed then its cold and that you need to pass it to a heater or vaporizer to farther warm up. Gassing up temp should at least closed to the ambient temperature of your containment else it would take a long time. I have not seen any references/Guidelines. I have no idea, this is just a theory I have. Pls do not use it as advise.
Sir , What about the formula to find the right amount to load in order to gassing up? Thank you
There is an app with a download link in some of the videos uploaded. It was a software that runs in Windows OS that I created 5 yrs ago. You will find there the solution. However, in most cases, there is a Gas Form C and Manuals on board with given value for such quantity to load. Which there is not a need for formula.
@@ShipAhoyVlogs Yes , I know about gas form C . I will take a look on the link !
@@gabrielebambino6083 I will make a new edition for such software. The one that is downloadable has no printing features or disabled. If i find time, I might recreate it since the original source code was corrupted though starting from scratch is holding me back. so its just on the pipeline i guess.
This is why chief officers on tankers are paid way higher compared to ships transporting dry cargoes.
Generally, I agree with you sir. Although some companies who operates both variety of Bulk & Tankers offers the same salary whichever vessel assignment they are into. However, it is most applicable to the engineers and Master for cross crewing/manning. Hence, its easier when shortage of manpower is on hand. Still is a profound statement just as you said so. Pls suggest and appreciate much if if you could scrutinize as well if I missed out some things.
@@ShipAhoyVlogs I'm only a newbie sir on a gas carrier but the way I see it coming from a ship handling dry cargoes, chief officers job on tankers are quite complex, with all the explanations you presented. Plus gas carriers or generally tankers are more expensive to build hence skills for these type of ships are paid more.
Sir paano pag walang storage tank?
Anong cargo tank gagamitin for gassing up..thank you..
Liquid can be supplied via Manifold from shore then thru Vaporizer and to the Cargo tanks. Same with STS if done off port. Else, if your Ship is Semi Pressurized & Fully Ref then a certain amount of liquid can be directly loaded to one tank but it has to be done gradually as the tanks are not cooled down yet. This has been done in practice, sometimes you don't even need to pump thru the vaporizer, we just let the liquid boils off, open other tanks in series which eventually will be gassed up. Again, this depends on your cargo containment type.
The method done directly to the tanks are most applicable on Ethylene ships. Especially that the Inerted Atmosphere is Nitrogen and not the typical IGS, so even if it isn't gassed up yet and not cooled down, the containment is more robust and hence forming of solid particles are not common since it was purged with 99% N2. Please check your ships P and A Manual. Else, your Operation department will instruct your vessel accordingly.
chief, Crude oil nmn next?
sure...what particular topic?
I have started already like AUS or Automatic Unloading System. Some will follow eventually. Keep posted.
Inert Gas operation, loading and unloading operations procedures.
@@narierivera8414 Coming soon. pls be patient. Kindly share and invite others. If you think its worth learning from. I will be more motivated to continue and upload whatever there is to discuss. Engine side will also be part of my features. There are pool of experts to present like Chief Engr and other ranks for each respective subject matter.
Sir Chief your presentation is Innovative and fantastic, thank you for Sharing.