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pmover; Thanks for your suggestions. Yes,attached pictures belong to inside the drum and it was not in operation and stored at side under ambient temperature. I was thinking to clean inside with inhibited HCL before i put in operation. will it be fine or any further suggestions?

Chicopee; Yes, this boiler was in dry storage.

We have steam marine boiler for one of our LNG floating vessel. We are experiencing some rust and looking some possible solutions or chemicals for removing the same rust. Can you suggest us some possible solutions? Attached are pictures for your reference. Thanks Rishi

LNGuy; Noted. Many Thanks for your guidance. I guess, I can find LNG consumption from (+45.c to -20.C) and each time consider Delta T 10.c but how I will establish the time for total cooling down. Also heat ingress due to pump and heat ingress due to loading line length can be calculated but...

LNGuy; Am I supposed to use Cp and Cg values same? Sine you said Cp is specific hear of LNG so Cg suppose to same or different? Thanks again for your guidance.

Hi LNGuy Thank you once again. I have few clarifications, would appreciate if you could assist me; I will calculate Q= M_tank*cp*dT where M-Tank is Mass volume of tank, cp - specific heat of LNG and dT is 10.C ( 32-10= 22.c) when I want to calculate , ( m*L+ m*cg*dT'). You confirmed m is mass...

Hi LNGuy Thank you for your help. I am still wondering how to restrict the calculation based on dT= 1 hr. Would you mind to share any file or reference calculation on rishi.rga at gmail.com? It will be highly appreciable. Thanks Rish

Sorry; Here is the attached file. Regards Rishhttp://files.engineering.com/getfile.aspx?folder=2b3cfb6e-6dac-4aac-8425-e7a72479cb1e&file=LNG_Cool_down-1.xlsx

Hello All I did some kind of calculations for LNG tank cooling down before to start loading process for LNG carrier. Normally, cooling down time is recommended 12-15 hr based on site conditions. However my calculation sheet is showing bit high time and I am bit confuse whether I am on right...

LNGuy; Could you suggest me how to calculate temp. drop per hour to calculate total cooling down rate for LNG tank? I am also in same boat and I need to calculate required amount of LNG for cooling down and how much time it may require to cool down the tank up to -130.C. I was told that it...