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Old 01-17-2016, 08:23 PM   #21
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Your comment puzzles me. The quote you are referring to mentions glass as a sight gauge material. Are you under the impression that ABYC sanctions this ? They do not as far as I can see in H-33.
Ahhhhh...don't take that comment to seriously as I can't point to any specifics right now....

Just typically in safety, especially in regulation....too many rules are written for the extreme possibility versus the average operation.

Look at it that way and apply accordingly. If I missed spoke and every ABYC rule is properly tempered, I appologize.

My quick stab would be our discussion about propane on a flybridge being vented below gunner level...way too complicated on my boat for what it's worth...and to what probability gained? Just food for thought

Even sight gauges have a wide variety of risks and solutions...wwhat solves what adequately for safety?
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Old 01-17-2016, 09:00 PM   #22
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As Kulas suggested, Kenco make a variety of quality level gauges. We use this magnetic type at work for high risk areas. Magna-Site Magnetic Level Gauge | KENCO

On my boat, I use cheap vinyl plastic tube and a good quality isolation valve that stays shut except when checking level. The clear hose will require replacing every few years. Works for me.
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Old 01-17-2016, 09:18 PM   #23
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Even sight gauges have a wide variety of risks and solutions...wwhat solves what adequately for safety?
Certainly not glass
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Old 04-06-2018, 11:13 AM   #24
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Fuel Tank Sight Glass Material

Iím resurrecting this thread. Iíve just had the boat surveyed for insurance purposes. Most recommendations are trivial to contend with but the surveyor came down hard on my fuel sight tubes: the material is considered unsafe. Iím not sure what the material is.

Click image for larger version

Name:	Fuel Polishing System and Racor 900 Main Fuel Filters.jpg
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And

Click image for larger version

Name:	Petcock port rear fuel tank.jpg
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ID:	74886

Anyone have recommendations that can be attached to existing fittings?

Thanks, Jim
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Old 04-06-2018, 11:20 AM   #25
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Shouldn't matter if the valves are kept shut off except when viewing level. That's the same arrangement my AT34 had.
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Old 04-06-2018, 11:50 AM   #26
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The surveyor works for you. Ask him for a detailed written report on why the material is unsafe given the valves are only turned on for viewing and for recommendations on acceptable material.

Some surveyors like to show off there new education by applying new boat standards to older boats.
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Old 04-06-2018, 11:51 AM   #27
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Fuel Tank Sight Glass Material

Quote:
Originally Posted by boathealer View Post
Shouldn't matter if the valves are kept shut off except when viewing level. That's the same arrangement my AT34 had.


My surveyor called out my sight tubes as well. His issue wasnít the material, but the lack of a top valve. One of the things that I mean to do is put a valve at the top of the sight tube. Not a real high priority, but it is on the ever expanding list.

Btw, my sight tube are a clear plastic hose. So in a fire they can melt. I keep the valve on the sight tube closed.
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Old 04-06-2018, 12:08 PM   #28
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The surveyor works for you. Ask him for a detailed written report on why the material is unsafe given the valves are only turned on for viewing and for recommendations on acceptable material.



Some surveyors like to show off there new education by applying new boat standards to older boats.

This surveyor has been around since Pontius was a pilot. Does a lot of commercial marine surveying. Iíve found that the petcocks are not fail proof...some of mine ďweepĒ if left open, so I have a regular routine where I check all of them to ensure they are closed. Iíd prefer spring closures on them. This really isnít an option for me. I need to ensure that Iíve taken proper steps to comply.

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Old 04-06-2018, 12:33 PM   #29
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What does your surveyor recommend?
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Old 04-06-2018, 12:45 PM   #30
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When you turn in your survey to insurance, wait to see if they require you to correct it.
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Old 04-06-2018, 01:25 PM   #31
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Here is the URL to the fuel sight glass tubing, I believe.

https://www.usplastic.com/catalog/it...x?itemid=37582

Perhaps he wants a metal 3 sided encasement of the tube even though we all keep the lower valve closed, except when manually taking a tank reading.
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Old 04-06-2018, 01:29 PM   #32
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Fuel Tank Sight Glass Material

He was vague on it. The rating on the USplastic hose is for 200 F. I suspect he would not approve that tubing.

Edit: Teflon would have a much higher temperature rating. Semi opaque would be okay.

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Old 04-06-2018, 01:34 PM   #33
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He was vague on it. The rating on the USplastic hose is for 200 F. I suspect he would not approve that tubing.
Show him the URL, without comment, and ask if this will satisfy his requirements. He is a professional surveyor so one would believe he would have a recommendation.

Let's face it, if the tank room get close to 200F, you have other problems.
Just keep the lower valve shut.

I would consider installing an upper valve if it makes him happy but, my boat has a paper plaque in the engine room specifying, the boat was in compliance with all rules and regulations at the time of construction.

My surveyor asked about the engine room fan to blow out bilge fumes prior to starting the engine. He seemed satisfied when I told him, that fan is not required on a diesel boat.
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Old 04-06-2018, 01:38 PM   #34
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Show him the URL, without comment, and ask if this will satisfy his requirements. He is a professional surveyor so one would believe he would have a recommendation.

Let's face it, if the tank room get close to 200F, you have other problems.
Just keep the lower valve shut.

I would consider installing an upper valve if it makes him happy but, my boat has a paper plaque in the engine room specifying, the boat was in compliance with all regulations at the time of construction.


Ok Iíll try that. I have petcocks on both ends of the tube.

Jim
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Old 04-06-2018, 01:55 PM   #35
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A side note for the AT34, I would have like to have fuel returns to either fuel tank. My boat has a return only to the port tank. Makes it impossible to install a fuel polishing system and moving fuel from port to the starboard tank without opening the cross connect.
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Old 04-06-2018, 02:32 PM   #36
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Try to use Tygon F4040-A formulation. The fact that it is yellow will tend to convince inspector Clouseau its not just vinyl.

https://www.usplastic.com/catalog/fi...gon-F4040A.pdf
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Old 04-06-2018, 02:41 PM   #37
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Try to use Tygon F4040-A formulation. The fact that it is yellow will tend to convince inspector Clouseau its not just vinyl.

https://www.usplastic.com/catalog/fi...gon-F4040A.pdf
Thatís what is on our site tubes. The specs say 165 degree f working temp but I couldnít fine any data for the melting point. Do you have any more info?
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Old 04-06-2018, 03:26 PM   #38
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Try to use Tygon F4040-A formulation. The fact that it is yellow will tend to convince inspector Clouseau its not just vinyl.

https://www.usplastic.com/catalog/fi...gon-F4040A.pdf
I had this discussion with Kurt and as I recall, this is what he recommended.

Tygon tubing is a bit over kill, especially in the price.

I suspect both kinds melt at the same temperature.
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Old 04-06-2018, 03:34 PM   #39
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If the surveyor doesnt quote chapter and verse why its not OK and what it should be....

I would gave a field day dressing him down on expertise.

I may not know everything about boats, but in my prime in my previous life, if someone questioned my expertise...chapter, verse and solution followed....like an arrow to the heart.

As long as the shutoff petcocks/ valves are in the closed position except when seeing the fuel volume, it wouldnt matter if the tube was tissue paper. If they are push button valves like on the Azimuts I used to run, I bet I could convince the insurance company your surveyors worries are unfounded.
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Old 04-06-2018, 03:43 PM   #40
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Thatís what is on our site tubes. The specs say 165 degree f working temp but I couldnít fine any data for the melting point. Do you have any more info?
Don't want to lead you astray. Tygon IS vinyl, but specially compounded.
MSDS shows a flash point of 500 deg, but would have long since melted.
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