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Author Topic:   Filling Tempo tanks on 170 and grounding
Camuyano posted 06-10-2004 03:47 PM ET (US)   Profile for Camuyano   Send Email to Camuyano  
Do you have to take the Tempo 13 gal. tanks out of the boat before filling them or can you leave them in? I know you’re supposed to take portable containers out of the vehicle when filling up at the gas station to avoid sparks caused by static electricity but it seems that a Tempo 13 gal. tank may be hard to handle when full. If you leave them in, is there anything you have to do to ground the boat and trailer?


WHALERBOY 14 posted 06-10-2004 05:43 PM ET (US)     Profile for WHALERBOY 14  Send Email to WHALERBOY 14     
On my 1982 15' striper, i leave the tank in the boat. i have the same tank and have had no problems.

Joshua Walters

Tightlines & Happy Whalin'

Maximus posted 06-10-2004 05:45 PM ET (US)     Profile for Maximus  Send Email to Maximus     
I leave them in the boat.

6.6 lbm/gallon x 12 gallons = 79.2 lbm + weight of the tank.

Backlash posted 06-10-2004 06:28 PM ET (US)     Profile for Backlash  Send Email to Backlash     
Good question. I know that plastic fuel containers should always be removed from a vehicle and grounded (placed on the ground/concrete) prior to filling due to the possibility of static electricity. This is especially important when carrying them in a pickup with a bed liner. Are boats any different?
Buckda posted 06-10-2004 06:40 PM ET (US)     Profile for Buckda  Send Email to Buckda     
BE SURE TO DISCHARGE STATIC ELECTRICITY FROM YOUR BODY by touching the metal side of the pump before you begin pumping gas into your car or your boat. Remember to touch the side of the pump again if you go back into your car or climb aboard the boat for any reason. This practice should help to discharge the static electricity that you build up getting into and out of the vehicle. This is an often overlooked risk that you face each and every time you fuel...especially in dry climates when static electricity can really build up. (like the SouthWest, or evn the MidWest in the Winter)

With plastic tanks, the problem is that the static charge builds up with the simple running of fuel into the tank (across the plastic).

I've never had a problem, but consider doing that some marina's do - buy a static discharge line and clip it to yourself and the pump when filling - to allow the charge to drain and ground.

If that is not feasable, I'd try to figure out a way (maybe a sling type of arrangement) to make it easier to lift the tanks out so that they can be placed and filled on the ground.

My 12 gallon tank in my 15 is very clumsy for this type of application, but it might work for yours.

jimh posted 06-12-2004 12:11 AM ET (US)     Profile for jimh  Send Email to jimh     
I think the problems with static charge build up have declined since the 1970's as polyester clothing is worn less frequently.

It is not clear to me if the original question was in regard to fueling a boat while on a trailer at a gas station, or fueling a boat while afloat at a dock.

In the later case I would suspect little static problems would arise due to the generally wet environment of the cockpit deck.

There is no way that most people could lift a 12-gallon fuel tank that was full from ground level, over the gunwales of a boat on a trailer, and set it down. The risk of injury from that exceeds any risk of static charge. Spritz the tank and cockpit with some water first, if you are really worried about it. That ought to drain off any charge.

Knot at Work posted 06-12-2004 12:18 AM ET (US)     Profile for Knot at Work  Send Email to Knot at Work     
filled my 6.6 gallon tempos today in my 170 to go snapper fishing tomorrow... no spark... no static cleaning.

I am more worried about the soccer mom, answering the cell phone while dodging love bugs....

Camuyano posted 06-14-2004 09:55 AM ET (US)     Profile for Camuyano  Send Email to Camuyano     

The original question was referring to a boat on the trailer at a gas station. I agree with you that there is little chance of static discharge while on the water since the boat is in contact with the water (a conductor). My concern would be at the gas station as the trailer tires act as isolators, although I think the risk is still small. I that regard, I'm assuming I'd be safer grounding myself and then reaching over the gunnel (with feet on the floor to remain grounded) and fill the tank as oppossed to climbing on the boat? Am I right?


Moe posted 06-14-2004 11:28 AM ET (US)     Profile for Moe  Send Email to Moe     
A plastic bed liner generates a lot of static moving around and rubbing on the truck. A portable gas tank picks this up, as well as generates static if it's moving around in the bed. This is the main reason bedliners come with a warning to remove fuel tanks from them and sit them on the ground before fueling.

Well tied-down Tempo tanks aren't going to be rubbing the boat, but static might be generated by other things, such as tie-downs or canvas moving in the wind... even the wind flowing over the hull.

As mentioned, one of the major static generators is the driver sliding out of the vehicle across the upholstery. Touching a metal part of the gas pump and vehicle simultaneously before getting started is a good idea.

Don't get back in the vehicle while fueling. Although the mixture in the fuel tank filler pipe is generally too rich to ignite, the fumes around the filler and nozzle can. In many cases, people turn what would normally only be a short "poof" into a full fledged fire by jerking the flowing nozzle out of the filler pipe.

I'd personally have no problem filling the tanks in the boat on the trailer, but I'd put a hand on the gas pump and the boat at the same time, before doing so, to get us all at the same potential.

Touch the fuel nozzle to the tank away from the filler, then remove the tank cap and fuel. Keep the nozzle in contact with the tank opening during fueling. Flowing fuel can generate static.

On the flightline, the parked aircraft was grounded, the fuel truck grounded to the same point, and the fuel nozzle grounded to the aircraft before inserting the nozzle into it.

Take these precautions and you should have no problems.


newt posted 06-14-2004 12:15 PM ET (US)     Profile for newt  Send Email to newt     
I have filled my plastic Tempos both ways. It is somewhat of a workout to lift the full 13 gal tanks back into the boat, but can be done without a problem. I have also filled them up in the boat, and I haven't blown up yet.

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