Home › Forums › General › General Board › Pressure Hull Atmosphere Sampling?
- This topic has 6 replies, 4 voices, and was last updated 13 years, 5 months ago by
DANFROV.
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March 8, 2011 at 9:34 pm #4127
Richard Boxhall
ParticipantHello all,
I am a mechanical engineer working within Naval Submarine Support with no real experience of commercial ROVs.
For my MSc dissertation I have undertaken an investigation into options for submarine atmosphere sampling (i.e. a submarine is disabled and you want to know the conditions within to ensure the crew are alive and the atmosphere will not endanger rescuers).
Therefore I am looking at ROV mounted invasive techniques that will maintain watertight integrity (e.g. hot tapping?) and also underwater communications, (e.g. interrogating an onbaord atmosphere analyser?).
I am hoping there are commercially available systems that may be of interest; but as you can appreciate being quite new to the ROV field it’s quite a vast industry when you don’t know where to look!
Does anyone have any tips on any applicablke techniques that are available, or where is a good place to start looking for relevant technology? Even just good websites for research?
Any help would be greatly appreciated, and if you have any questions or require anymore details, then please drop me a line.
Thanks in advance.
Richard
March 9, 2011 at 7:44 am #30523Donald Faulds
ParticipantHi Richard, I have worked a little with ROV systems specifically for supporting sub rescue.
The short answer is that the ROV supports the guys in the sub. There is absolutely no way the ROV would ever be allowed to intervene in the submarine without the guys inside agreeing. Only if they are certain that the sub is full of non-survivors would the ROV intervene directly.
DISSUBS communicate by underwater acoustic telephone. NATO standard kit. If the telephone is not working then there is an international set of hull tapping codes. (ROV needs a hydrophone).
All subs in recent decades have "ventilation" points. ROVs connect special hoses from the surface so they can recirculate air. Air sampling is done on the surface. There is a NATO public standard on this.
The long answer is quite long, I have some material that is more than should go on a forum post. An old, but still excellent, book on sub rescues is "Few Survived" by Edwyn Gray – get it second hand on Ebay or Amazon.
I don’t want to post my email address on this public forum – but I think there is a way to send messages to a member. If you find the way, send me a contact and I can send you some detail material on this.
(ROV intervention on military subs is not a big group of people).
March 9, 2011 at 9:58 am #30524James McLauchlan
ParticipantI don’t want to post my email address on this public forum – but I think there is a way to send messages to a member. If you find the way, send me a contact and I can send you some detail material on this.
To send the OP a PM.
Look at the last post from the Original Poster and click on the Private Message (PM) option. A message box will pop up with the posters username in the ‘to:’ box.Add a message subject, add some text, hit send.
March 9, 2011 at 10:52 am #30525DANFROV
KeymasterMaybe by using new Underwater WIFI technology you could connect the data to an ROV outside the hull.
DanFrov
March 9, 2011 at 12:45 pm #30526Donald Faulds
ParticipantWiFi – ha ha – it might work at 5m on a good day, whereas those acoustic telephones work over 25km and the later models have data transfer alongside the voice for <reason>
March 10, 2011 at 8:10 pm #30527Richard Boxhall
ParticipantThanks everyone for the replies. All posts appreciated.
Don, I have sent you a message with my email address.
Richard
March 11, 2011 at 9:24 am #30528DANFROV
KeymasterI just saw this on the Register today.
Please follow link.
Spooks are in panic mode.
http://www.theregister.co.uk/2011/03/10/through_metal_comms_n_power_reinvented/
DanFrov
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