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#1
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posted to rec.boats.building
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I recently found out about a new system that prevents boat corrosion.
The system is called SeaBis Electrolysis Corrosion Prevention System. This system is apparently the first of its kind that detects and eliminates stray current and actually prevents corrosion. Once the system is installed and you have completed a process of elimination of stray current coming from in and outside the boat, the boat is then protected once and for all. Any new stray current is monitored and when it turns up it is eliminated and the boat once again is protected. The system also comes with an anode voltage tester and prode to measure the effectiveness of existing anodes. Anode lifespan is prolonged up to 2 yrs with this system. Is there anyone out there that has installed this system or has a better or another way of preventing corrosion damage to boats? More about the system can be found at http://www.seabis.net |
#2
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posted to rec.boats.building
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Angelika,
This system is relatively simple. It is primarily a detection system, which allows you, the owner to identfy the source of stray currents for correction. Additionally, it provides a kit to isolate the engine's connection from the battery to the hull. All of this is a good thing, but it does not protect and it does not prevent electrical corrosion. It facilitates YOU to do that. This subject is extremely complex and cannot be fully addressed in a NG. There have been numerous books written on this subject if you wish to do the research. Further complicating this problem is the act of inspecting the observed corrosion cannot identify the cause of it. As the website states, the cause could be either galvanic, stray current or both. Prevention must start at the beginning of construction of the vessel and be continued through the application of common sense and best practices throughout the vessel's life-time. Properly executed from the beginning, these practices will eliminate virtually all corrosion. Please also understand that anode protection is a band aid, not a cure and consequently, be a CAUSE of corrosion all on their own. Steve wrote in message ... I recently found out about a new system that prevents boat corrosion. The system is called SeaBis Electrolysis Corrosion Prevention System. This system is apparently the first of its kind that detects and eliminates stray current and actually prevents corrosion. Once the system is installed and you have completed a process of elimination of stray current coming from in and outside the boat, the boat is then protected once and for all. Any new stray current is monitored and when it turns up it is eliminated and the boat once again is protected. The system also comes with an anode voltage tester and prode to measure the effectiveness of existing anodes. Anode lifespan is prolonged up to 2 yrs with this system. Is there anyone out there that has installed this system or has a better or another way of preventing corrosion damage to boats? More about the system can be found at http://www.seabis.net |
#3
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posted to rec.boats.building
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On Aug 3, 8:45*pm, "Steve Lusardi" wrote:
Angelika, This system is relatively simple. It is primarily a detection system, which allows you, the owner to identfy the source of stray currents for correction. Additionally, it provides a kit to isolate the engine's connection from the battery to the hull. *All of this is a good thing, but it does not protect and it does not prevent electrical corrosion. It facilitates YOU to do that. This subject is extremely complex and cannot be fully addressed in a NG. There have been numerous books written on this subject if you wish to do the research. Further complicating this problem is the act of inspecting the observed corrosion cannot identify the cause of it. As the website states, the cause could be either galvanic, stray current or both. Prevention must start at the beginning of construction of the vessel and be continued through the application of common sense and best practices throughout the vessel's life-time. Properly executed from the beginning, these practices will eliminate virtually all corrosion. Please also understand that anode protection is a band aid, not a cure and consequently, be a CAUSE of corrosion all on their own. Steve wrote in message ... I recently found out about a new system that prevents boat corrosion. The system is called SeaBis Electrolysis Corrosion Prevention System. This system is apparently the first of its kind that detects and eliminates stray current and actually prevents corrosion. Once the system is installed and you have completed a process of elimination of stray current coming from in and outside the boat, the boat is then protected once and for all. Any new stray current is monitored and when it turns up it is eliminated and the boat once again is protected. The system also comes with an anode voltage tester and prode to measure the effectiveness of existing anodes. Anode lifespan is prolonged up to 2 yrs with this system. Is there anyone out there that has installed this system or has a better or another way of preventing corrosion damage to boats? More about the system can be found athttp://www.seabis.net rec.boats.building Hi Steve, Thanks for that. I have gone into this at length and have discovered that there is a lot of confusion around exactly what causes electrolysis and what is electrolysis. What are the differences between electrolysis and galvanic all of which has been explained and researched on the web site. http://www.seabis.net. In fact as I understand it galvanic corrosion is accelerated in the presence of stray current and is slowed down when their is no stray current. It can be also be slowed using galvanic isolators and anodes. When you say it does not protect and it does not prevent electrical corrosion have you tried the system and found this to be the case or is this something you have come up with from reading the information on the web site? If there is no stray current then there can't be any electrolysis- right? From where I sit if the system is able to do what they say ie 1. hard wire install the stray current detector ( open circuit engine) 2. follow their instruction manual on the process of eliminating all the sources of stray current My boat is now free of ALL stray current. Then use the stray detecter on an ongoing bases as a monitor that tells me when new stray current is present would prevent the boat from experiencing any further electrolysis - so if I had any electrolysis damage repaired and then install a SeaBis system, so long as I kept an eye on the seaBis stray current detector regularly my boat would be free of stray currently permanently. Also I found that a technical marine engineer is able to identify boat corrosion quite easily and is able to determine where the corrosion is coming from if not sure. The system is able to prevent electrolysis simply by the process of elimination explained in their installation and repair manual. Of course as a Do-It- Yourself System I would expect to either manual make the effort to install the System myself or have my maintenance guy do it for me. When you say "It facilitates that YOU to do that" I almost get the feeling that with your emphasis that there is something wrong in my having to facilitate a part of the process. ? One thing is for certain I agree with you when you say prevention must start at the beginning of construction and be continued through the application of common sense and best practices throughout the vessels life-time. And would have to say that the installation of a SeaBis would most certainly be good practice prior to a new vessel hitting the water- that would be the best time to be clear of all stray current . There is a sort of comfort in knowing that stray current coming off other vessels and off marinas has no way of effecting my boat once the SeaBis is installed. I spoke to a marina owner in Adelaide Aus who trialed the system because at his particular marina the depth and current flow of water was such that it induced stray current rapidly and he was susceptible to insurance claims and on going electrolysis repairs from his tenants who constantly complained about paying for recurring electrolysis. Once the Marina was fitted with the SeaBis Electrolysis Prevention Maintenance System and he could prove the Marina was NOT necessarily the main cause and that in fact the vessels were effecting one another, he implemented a SeaBis check on all boats prior to them entering the marina and recommends that a SeaBis System should be fitted prior to mooring. Those boats that show critical readings of stray current he declines entrance to the marina unless they do something to fix the stray current. over a period of 12 months he has almost eliminated the stray current electrolysis problem and saved himself and his tenants thousands of dollars. More importantly he no longer has the battle of insurance claims against the marina as the insurance company fully accepts the accuracy of the SeaBis readings. Naturally I think any boat owner in the know is aware that anodes are only sacrificial and as you say a band aid solution - however when anodes are monitored and replaced regularly they do the job quite well, the problem occurs when one forgets to monitor them and as you say they deteriorate to a level where they actually become a cause of corrosion- again the SeaBis Systems caters for this. As per my original question all I wanted to know is if their is any other product similar to the SeaBis system that can assist in the prevention of electrolysis corrosion and if anyone can provide a simpler method to help fix this problem. My problem is that I have to find a way to cover off on 40k being spent to replace pontoons that have been corroded by electrolysis (this has been proven) and I now am deciding to install a SeaBis to prevent any further damage. |
#4
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posted to rec.boats.building
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Wow, you have made quite an effort to understand this problem. That's good,
but you are not there yet. First let see if I can explain the difference between galvanic and stray current corrosion. Both are electrical corrosion and the result is identical, but the causes are quite different. Galvanic corrosion is caused by different materials immersed in an electrolyte electrically connected. This will create a self induced electrical current between the two metals, like little self charging batteries. The strength of which is a function of the galvanic distance between the two in the table of elements. As you can imagine, this can be very difficult to eliminate. The only way to do this is to eliminate the use of dissimilar materials and or electrically insulate the two. Like using bronze fittings on a steel boat. Even homogenous alloys suffer from this all on their own when submersed in water to different degrees. An example of this is my recent experience with the boiler in my Saeco coffee maker. Saeco has replaced the bronze boiler in their early models with a die cast aluminum one in their newer ones. The die casting technique is to fill the mold using molten metal under pressure, but in this case a large amount of zinc has been used with the aluminum to promote molten flow in the mold. This is great for production, but not for this product. Upon disassembly, the inside of the boiler looked like worms ate holes all through the casting. Stray current corrosion is identical in nature, but is caused by an external DC power source, like in the electroplating process. This type of corrosion is the easiest to eliminate and the most likely culprit in your experience. On boats, this is caused because the hull is being used as the ships battery's return path for current and the safety ground for shore power is also connected to the hull. Although stray AC current is somewhat unhealthy, it is the DC current that does the damage. Since electrical code demands the connection of safety earth, every boat connected to shore power becomes a participating element in a current leak caused by any shore power connected boat. That's where the liability case comes from. Now that you understand the problem. Eliminating your vulnerability depends on your perspective. Are you a boat or are you the marina? If you are the boat, you can use galvanic isolators, which are essentially diodes. These inhibit, but do not eliminate the problem from your neighbor because diodes have some internal resistance. You can isolate your hull from the battery system and use an LED as a fault indicator for your boat. (a good thing) You can elect to NOT connect the shore safety earth and use an isolation transformer to magnetically couple AC power to your boat and creating your own ships earth for your safety earth, but that can be construed as illegal and against local electrical code. The latter is the only way to eliminate the risk of someone else's electrical fault from damaging your boat. Now if you are the marina, you have a BIG problem, because you cannot eliminate stupid in other people. You can make all the rules you want, but stupid will prevail. I have no solution for this problem, I don't think there is one. You can use plastic floats and other non-conductive materials as well as insolate all uses of metal under water, but that's it. Coming back to the system you mentioned, it does some isolation, but it is primarily a detector, not an eliminator. It doesn't hurt, but I wouldn't use it. On super yachts and commercial ships there are in use many automatic systems that detect voltage imbalances throughout the vessel by the use of many sensors and when detected, apply an opposite polarity impressed current to counter any induced potentials. These are expensive systems, but they work extremely well and pay for themselves over time. Very rarely do you see anodes in use on commercial ships. They are simply too expensive and maintenance intensive to use in the quantity required. They are a band aid and by introducing a low nobility material to the equation, actually encourage galvanic currents. Steve wrote in message ... On Aug 3, 8:45 pm, "Steve Lusardi" wrote: Angelika, This system is relatively simple. It is primarily a detection system, which allows you, the owner to identfy the source of stray currents for correction. Additionally, it provides a kit to isolate the engine's connection from the battery to the hull. All of this is a good thing, but it does not protect and it does not prevent electrical corrosion. It facilitates YOU to do that. This subject is extremely complex and cannot be fully addressed in a NG. There have been numerous books written on this subject if you wish to do the research. Further complicating this problem is the act of inspecting the observed corrosion cannot identify the cause of it. As the website states, the cause could be either galvanic, stray current or both. Prevention must start at the beginning of construction of the vessel and be continued through the application of common sense and best practices throughout the vessel's life-time. Properly executed from the beginning, these practices will eliminate virtually all corrosion. Please also understand that anode protection is a band aid, not a cure and consequently, be a CAUSE of corrosion all on their own. Steve wrote in message ... I recently found out about a new system that prevents boat corrosion. The system is called SeaBis Electrolysis Corrosion Prevention System. This system is apparently the first of its kind that detects and eliminates stray current and actually prevents corrosion. Once the system is installed and you have completed a process of elimination of stray current coming from in and outside the boat, the boat is then protected once and for all. Any new stray current is monitored and when it turns up it is eliminated and the boat once again is protected. The system also comes with an anode voltage tester and prode to measure the effectiveness of existing anodes. Anode lifespan is prolonged up to 2 yrs with this system. Is there anyone out there that has installed this system or has a better or another way of preventing corrosion damage to boats? More about the system can be found athttp://www.seabis.net rec.boats.building Hi Steve, Thanks for that. I have gone into this at length and have discovered that there is a lot of confusion around exactly what causes electrolysis and what is electrolysis. What are the differences between electrolysis and galvanic all of which has been explained and researched on the web site. http://www.seabis.net. In fact as I understand it galvanic corrosion is accelerated in the presence of stray current and is slowed down when their is no stray current. It can be also be slowed using galvanic isolators and anodes. When you say it does not protect and it does not prevent electrical corrosion have you tried the system and found this to be the case or is this something you have come up with from reading the information on the web site? If there is no stray current then there can't be any electrolysis- right? From where I sit if the system is able to do what they say ie 1. hard wire install the stray current detector ( open circuit engine) 2. follow their instruction manual on the process of eliminating all the sources of stray current My boat is now free of ALL stray current. Then use the stray detecter on an ongoing bases as a monitor that tells me when new stray current is present would prevent the boat from experiencing any further electrolysis - so if I had any electrolysis damage repaired and then install a SeaBis system, so long as I kept an eye on the seaBis stray current detector regularly my boat would be free of stray currently permanently. Also I found that a technical marine engineer is able to identify boat corrosion quite easily and is able to determine where the corrosion is coming from if not sure. The system is able to prevent electrolysis simply by the process of elimination explained in their installation and repair manual. Of course as a Do-It- Yourself System I would expect to either manual make the effort to install the System myself or have my maintenance guy do it for me. When you say "It facilitates that YOU to do that" I almost get the feeling that with your emphasis that there is something wrong in my having to facilitate a part of the process. ? One thing is for certain I agree with you when you say prevention must start at the beginning of construction and be continued through the application of common sense and best practices throughout the vessels life-time. And would have to say that the installation of a SeaBis would most certainly be good practice prior to a new vessel hitting the water- that would be the best time to be clear of all stray current . There is a sort of comfort in knowing that stray current coming off other vessels and off marinas has no way of effecting my boat once the SeaBis is installed. I spoke to a marina owner in Adelaide Aus who trialed the system because at his particular marina the depth and current flow of water was such that it induced stray current rapidly and he was susceptible to insurance claims and on going electrolysis repairs from his tenants who constantly complained about paying for recurring electrolysis. Once the Marina was fitted with the SeaBis Electrolysis Prevention Maintenance System and he could prove the Marina was NOT necessarily the main cause and that in fact the vessels were effecting one another, he implemented a SeaBis check on all boats prior to them entering the marina and recommends that a SeaBis System should be fitted prior to mooring. Those boats that show critical readings of stray current he declines entrance to the marina unless they do something to fix the stray current. over a period of 12 months he has almost eliminated the stray current electrolysis problem and saved himself and his tenants thousands of dollars. More importantly he no longer has the battle of insurance claims against the marina as the insurance company fully accepts the accuracy of the SeaBis readings. Naturally I think any boat owner in the know is aware that anodes are only sacrificial and as you say a band aid solution - however when anodes are monitored and replaced regularly they do the job quite well, the problem occurs when one forgets to monitor them and as you say they deteriorate to a level where they actually become a cause of corrosion- again the SeaBis Systems caters for this. As per my original question all I wanted to know is if their is any other product similar to the SeaBis system that can assist in the prevention of electrolysis corrosion and if anyone can provide a simpler method to help fix this problem. My problem is that I have to find a way to cover off on 40k being spent to replace pontoons that have been corroded by electrolysis (this has been proven) and I now am deciding to install a SeaBis to prevent any further damage. |
#5
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posted to rec.boats.building
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![]() skrev i meddelelsen ... As per my original question all I wanted to know is if their is any other product similar to the SeaBis system that can assist in the prevention of electrolysis corrosion and if anyone can provide a simpler method to help fix this problem. My problem is that I have to find a way to cover off on 40k being spent to replace pontoons that have been corroded by electrolysis (this has been proven) and I now am deciding to install a SeaBis to prevent any further damage. ----------- From the SeaBis website. Angelika Koop- Sales & Marketing Coordinator Promotions/Event Manager Coincidence! |
#6
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posted to rec.boats.building
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From the SeaBis website.
Angelika Koop- Sales & Marketing Coordinator Promotions/Event Manager Coincidence! I KNEW it! Just the way the post was written... Anyway, still good info. |
#8
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posted to rec.boats.building
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On Aug 5, 12:30*am, Peggie Hall wrote:
wrote: When you say "It facilitates that YOU to do that" I almost get the feeling that with your emphasis that there is something wrong in my having to facilitate a part of the process. ? He is saying that neither your system nor any other should be considered to be a substitute or replacement for the owner's responsibility to maintain his vessel...that it will help him identify problems, but it's not gonna do his work for him, and should not be marketed as a device that will. -- Peggie ---------- Peggie Hall Specializing in marine sanitation since 1987 Author "Get Rid of Boat Odors - A Guide To Marine Sanitation Systems and Other Sources of Aggravation and Odor"http://shop.sailboatowners.com/boat_odors/ Hi Peggie, I am the designer of the SeaBis System and have been asked to clarify. Hopefully, copied to all Forum responses. The SeaBis unit responds to ALL stray current with a traffic light system. From green to flashing red depending on the severity of the current. We use a microprocessor (a very small computer) to get the accuracy. The SeaBis can very easily be proven by installing a SeaBis unit then, assuming SeaBis alarms, disconnecting the sense wire, SeaBis will now indicate Normal. At Normal level all stray current is far too low to ever cause electrolysis. The System part of SeaBis is the Process of Elimination Instructions supplied with SeaBis. Once completed SeaBis will indicate Normal. With no stray current there can be no electrolysis. Ever. Anodes used to combat galvanic corrosion produce millionths of an amp of current. Stray current is commonly in thousandths to whole amps of current. It will swap the anode current on ay least 1000:1 ratio. With no stray current the anodes can work properly and their life will be at least doubled. Full detail is provided at www.seabis.com.au/tips.html. Our Guarantee and Proof by way of a series of photographs is also available at www.seabis.com.au. I hope this clarifies matters. Regards, Glen Bishop 61 (0)8 8556 6593 |
#9
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Zz Yzx wrote:
From the SeaBis website. Angelika Koop- Sales & Marketing Coordinator Promotions/Event Manager Coincidence! I KNEW it! Just the way the post was written... Anyway, still good info. The SeaBiz website's info is full of FUD. I quote from the tips page: "When every source of DC power (12 or 24 volt batteries) is switched open circuit, permanently, with ALL negative and positive disconnected, no stray current can flow. If one source (first boat) has the battery negative connected and any other boat within a minimum of 150 meters has the battery negative connected the voltage difference will cause boat to boat stray current – even with both battery positives switched open circuit. Both boats will be damaged by stray current. " Anyone who claims to be able to detect *any* difference at all in the stray current from other boats that have no shore power and battery positives *only* isolated, againt both terminals isolated (excluding physically damaged or submerged batteries) is selling snake oil. I could go on but Spammers Lie, and the misinformation is as expected for a spamvertised website. Caveat Emptor |
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