Clean It Up
UK Window Cleaning Forum => Window Cleaning Forum => Topic started by: JSMC on February 17, 2014, 09:34:59 pm
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curious to see if folks still do this. when ye think about it trucks travel all over the place with ibc tanks in the back of them n are not strapped down. i used to order chemicals in my last job and these guys were driving from all over europe with some amount of chemicals that were jus tloaded on by forklift and that was it. IBC tanks ar enot even baffled.
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Absolutely, that is what the load securing points in the back of a van are for, and if done correctly, it is perfectly safe!
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Absolutely, that is what the load securing points in the back of a van are for, and if done correctly, it is perfectly safe!
+1
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You wouldnt want to crash with a tank strapped in, specially if youve nothing inbetween you and the tank...them strap hooks in the bk of the van are welded to panel, no way would them panels withstand 700ltr/kg...
Securing the tank to the chassis is by far the safest way
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Depends if you put the saving of money, over the value of your life ?
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Yea, and any people you carry in the van too
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Look at the crash at http://www.youtube.com/watch?v=TMl-WQ5XkMI . Time from hitting wall at 45mph to dead stop of around 70 milliseconds, so 0.07 seconds. Acceleration = -287m/s/s.
Force = mass x acceleration so you get an effective weight of a 650L tank during that deceleration of 186 tons. A 1000L tank would be about 287 tons.
Now the news is that that was an empty van in the video, so your full van will take more time to stop and increase the amount of the van that crumples, but the numbers are a good indication of the scale of the problem. If your luggage hooks/straps can't take a couple of hundred tons then you're going to have a headache.
Before you all respond, I know I'm wrong and that your mate was unharmed a 200mph crash with a 2 ton bale of paper in the back secured with a bungee cord to a paper clip round the back bumper but the physics is unassailable. I also know that you've never heard of anyone being hurt in an accident so it can't possibly happen.
Vin
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Look at the crash at http://www.youtube.com/watch?v=TMl-WQ5XkMI . Time from hitting wall at 45mph to dead stop of around 70 milliseconds, so 0.07 seconds. Acceleration = -287m/s/s.
Force = mass x acceleration so you get an effective weight of a 650L tank during that deceleration of 186 tons. A 1000L tank would be about 287 tons.
Now the news is that that was an empty van in the video, so your full van will take more time to stop and increase the amount of the van that crumples, but the numbers are a good indication of the scale of the problem. If your luggage hooks/straps can't take a couple of hundred tons then you're going to have a headache.
Before you all respond, I know I'm wrong and that your mate was unharmed a 200mph crash with a 2 ton bale of paper in the back secured with a bungee cord to a paper clip round the back bumper but the physics is unassailable. I also know that you've never heard of anyone being hurt in an accident so it can't possibly happen.
Vin
Would a couple of bolts stop 287 tons? And if you hit a wall at 45mph I would think the tank behind you would be the least of your problems.
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8weekly,
Yes, have you never watched the crash tests demo vid they have on brodex, pure freedom ect?
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8weekly,
Yes, have you never watched the crash tests demo vid they have on brodex, pure freedom ect?
8 weekly wasn't talking about Mira tested systems.
Some people feel like just because theirs is bolted through the floor it will withstand a crash. Wrong. DIY and bolting it through the floor yourself is not much better than using the anchor points.
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You wouldnt want to crash with a tank strapped in, specially if youve nothing inbetween you and the tank...them strap hooks in the bk of the van are welded to panel, no way would them panels withstand 700ltr/kg...
Securing the tank to the chassis is by far the safest way
+1
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8weekly,
Yes, have you never watched the crash tests demo vid they have on brodex, pure freedom ect?
They weren't at 45 mph and they are quite different fixings to the tank frames that people on here are fitting. Wasn't the Pure Freedom tank empty?
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Haha you obviously no nothing about vehicles mate, if your trying to tell me that having some straps to the ancir points in the back of the van is SAFER than having it bolted to your chassis, your an idiot and shouldnt be giving people advice
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Strapped & wedged in to limit momentum.
No more dangerous than your wives & kids going out in a fiesta or fiat 500 etc.
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My 1000L IBC is stuck down with blu-tac.
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Haha you obviously no nothing about vehicles mate, if your trying to tell me that having some straps to the ancir points in the back of the van is SAFER than having it bolted to your chassis, your an idiot and shouldnt be giving people advice
Hope your not talking about my post? :'(
If you are, I think you need to re-read the post my friend. (Plus the irony of you calling someone else an idiot ???) :)
I said DIY bolted through floor is "not much" better than ratchet straps.
If you crash at any decent speed it will rip the floor of the van up. Only if the correct weight distribution plates are used underneath the vans flooring is it safe.....ish.
You get people stick a few bolts through the floor and they think they are solid.
Then there's those who drill through the chassis with out thinking about the structural integrity of the chassis itself.
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I dont understand how you can say having a system bolted to the chassis is "not much" safer than straps?! Lmfao you are nuts pal.
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I dont understand how you can say having a system bolted to the chassis is "not much" safer than straps?! Lmfao you are nuts pal.
If not done properly it really isn't.
Also remember the anchor points are bolted to the chassis. :)
Doesn't matter to me anyway,
I use a high tech combination of paper clips and Pritt stick. It's never budged!
;D
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Not rocket science lads... ratchet straps AND bolt to the floor! ;D
I have only ever used straps, and have been hit once from behind at 40-50mph, and the tank didnt budge.
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My flat tank is strapped in across the top to stop upwards shift in the event of an accident and has wood wedged down the sides to stop sideways shift .
Also have a double bulkhead and my tank does not move an inch . Mike
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Haha you obviously no nothing about vehicles mate, if your trying to tell me that having some straps to the ancir points in the back of the van is SAFER than having it bolted to your chassis, your an idiot and shouldnt be giving people advice
I think you should learn to read... and spell. No one has said that and no one has given advice.
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Look at the crash at http://www.youtube.com/watch?v=TMl-WQ5XkMI . Time from hitting wall at 45mph to dead stop of around 70 milliseconds, so 0.07 seconds. Acceleration = -287m/s/s.
Force = mass x acceleration so you get an effective weight of a 650L tank during that deceleration of 186 tons. A 1000L tank would be about 287 tons.
Now the news is that that was an empty van in the video, so your full van will take more time to stop and increase the amount of the van that crumples, but the numbers are a good indication of the scale of the problem. If your luggage hooks/straps can't take a couple of hundred tons then you're going to have a headache.
Before you all respond, I know I'm wrong and that your mate was unharmed a 200mph crash with a 2 ton bale of paper in the back secured with a bungee cord to a paper clip round the back bumper but the physics is unassailable. I also know that you've never heard of anyone being hurt in an accident so it can't possibly happen.
Vin
Thought about this overnight and, apologies, schoolboy error in there. Those numbers are in Newtons, so to get to effective weight need to divide by 9.81, so 19 tonnes and 29 tons respectively. Still far more than enough to tear out hooks welded to the floor of your van.
Vin
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strapping to the eye bolts in the van depends on what ratchet straps you use and the ones I've seen used most of the time are not up to the job
;)
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I had floor plates welded into my van floor with welded nuts on the underside so I could bolt my tank in as I have false floor.
It's not idea but I feel far safer knowing I have this over it being strapped in. BUT I don't think in way shape or form it's far safer than the anchor points.
If I could have welded in massive A4 sized plates then I would feel safer.
What does make me feel safe is the bulkhead. The standard bulk head in a transit or vivaro is flimsy at best. The one I had in installed is a proper bulkhead costing nearly a
£1000. It's reinforced with 4 struts. It was by pure luck it was installed before I bought the van!!!
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my 400L tank is strapped in top and back via the floor bolts. My back is protected by a metal sheet, its a ford escort old BT van.
I had a crash at 20 MPH last year and the tank only moved a few centimeters. I did have to empty the tank to push it back but it took less than a minute.
All my round is local so I don't actually drive faster that 30 anyway.
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My flat tank is strapped in across the top to stop upwards shift in the event of an accident and has wood wedged down the sides to stop sideways shift .
Also have a double bulkhead and my tank does not move an inch . Mike
+1.
I also have a 1000L tank in a van which is bolted through the floor. Both tanks were fitted by a professional company. There is no way I'd trust myself to do any of this stuff myself.
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I used to think that a tank bolted in would be better, but i am not convinced now. A tank bolted in has absolutely no give, it is rigid, and as one of the previous posts pointed out, the forces involved are absolutely immense. I strongly suspect the bolts would simply shear off in the event of i higher speed impact. Proper load securing straps are woven, so by their nature they are going to have some 'give', which would absorb a good portion of the forces.
If you think about it, that is exactly the same principle of how car safety has moved on so far in the last few decades. It used to be thought that simply making the car extremely strong was the best way, but of course this made the car effectively rigid, transferring all of the force of the impact directly to the occupants with potentially dire consequences. Cars now are designed to crumple, to absorb the force of the impact.
Another point is, why out of all van drivers, do window cleaners need to have their loads bolted in and/or crash tested?. What proportion of the vans on the road have their loads bolted in?. I would guess it will be absolutely tiny!. So if a builder thinks it is perfectly safe to secure a ton of bricks on a pallet in the back of his van using straps, why would it be unsafe to do the same with a box full of water?. Truck drivers use straps to secure loads many many times heavier than what any of us are going to be carrying.
For an extra 'safety' feature, i have been thinking of having an engineering shop make up a (shallow) 'V' shaped bit of metal, which would be welded on to my 'b' pillars about 8" above the load bay floor with the point facing to the rear. If, in the event of an accident, and if my tank then moved forward, the point of the 'V' would puncture the tank, releasing the water.
One last thing. Personally, i find it quite ironic the views on here regarding tank security, when attitudes in general to payloads and gvw are so lax. If you are quite unconcerned about driving around overweight with all the safety implications that entails such as overheating brakes, over stressing axles, bearings, etc (or even unwilling to accept that you may be), then i find it bizarre and more than a little contradictory that such strong views are being posted!.
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i think a tank hitting you in the back of the head is secondry to
the steering wheel smashing through your chest and killing you ;D
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i think a tank hitting you in the back of the head is secondry to
the steering wheel smashing through your chest and killing you ;D
Even worse if you are nearly overloaded all the time and more chance of the above happening the more weight their is to shift forward in the event of an accident . Mike
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Think what i would like to see is a crash at. 30mph with tank strapped in
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I used to think that a tank bolted in would be better, but i am not convinced now. A tank bolted in has absolutely no give, it is rigid, and as one of the previous posts pointed out, the forces involved are absolutely immense. I strongly suspect the bolts would simply shear off in the event of i higher speed impact. Proper load securing straps are woven, so by their nature they are going to have some 'give', which would absorb a good portion of the forces.
If you think about it, that is exactly the same principle of how car safety has moved on so far in the last few decades. It used to be thought that simply making the car extremely strong was the best way, but of course this made the car effectively rigid, transferring all of the force of the impact directly to the occupants with potentially dire consequences. Cars now are designed to crumple, to absorb the force of the impact.
Another point is, why out of all van drivers, do window cleaners need to have their loads bolted in and/or crash tested?. What proportion of the vans on the road have their loads bolted in?. I would guess it will be absolutely tiny!. So if a builder thinks it is perfectly safe to secure a ton of bricks on a pallet in the back of his van using straps, why would it be unsafe to do the same with a box full of water?. Truck drivers use straps to secure loads many many times heavier than what any of us are going to be carrying.
For an extra 'safety' feature, i have been thinking of having an engineering shop make up a (shallow) 'V' shaped bit of metal, which would be welded on to my 'b' pillars about 8" above the load bay floor with the point facing to the rear. If, in the event of an accident, and if my tank then moved forward, the point of the 'V' would puncture the tank, releasing the water.
One last thing. Personally, i find it quite ironic the views on here regarding tank security, when attitudes in general to payloads and gvw are so lax. If you are quite unconcerned about driving around overweight with all the safety implications that entails such as overheating brakes, over stressing axles, bearings, etc (or even unwilling to accept that you may be), then i find it bizarre and more than a little contradictory that such strong views are being posted!.
Thats what made me buy a brodex system
There lids are tight enough to keep water in, but on the VOSA vehicle test, where they crash at 30mph, because of the lid they have used and how the tanks are baffled internally, its designed to push the lid off and water goes everywere, rather than there being a big tank on the roll
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I gotta say I would think it is safer having it bolted but I had this done by Omnipole in my old van which when I wanted to take it out as I sold the van what a nightmare, the Machanic had to remove the petrol tank, I had to squeeze down the side of the tank as when the Machanic undone the bolt under the van the nut kept turning. If I was to move the tank say Into a hired van if mine was off the road there would of been no chance so will never have tank bolted down again.
With this van it's all strapped in plus I have a steel bulk head it sits right against and hasn't budged an inch. If I need to take tank out no a problem anymore. 👍👍👍
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the anchor rings in most vans are rated to 250kg and they are welded usually to plate metal , not that this matters much as i think the ring would break first.
The difference with a lorry carrying ibcs , pallets of bricks etc is the the load anchors are attached to the chassis of the trailer/bed and are rated much much higher than the anchor points in vans.
The straps they use are much higher rated than the average shop bought ones.
I would certainly be interested in seeing a crash test with with just straps on to anchor points .
I went for a crash tested tank for my own peace of mind and i think its well worth the money .
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Me ... 650L tank.
My van has a factory fitted bulkhead. The front upper edge of the tank (layflat wyedale) butts against the bulkhead which angles back slightly, top further back than the base.
The tank sits in a frame that is 90mm x 90 mm angle iron at the back of the tank. The sides and front of the tank sit in 50 x 50 mm angle iron. The corners of the frame are welded and the side lengths welded to the 90 x 90 mm at the back.
The frame is bolted through the floor with high ten tensile 12mm bolts to a mixture of 100mm x 100 mm plates and some 50 x 50 angle iron across the underneath of chassis members with bolts either side of the chassis member. The tank is strapped to the 90mm x 90mm angle with 2 x 5 tonne straps wound 3 times round through the baffle in the middle.
I'm happy with that; but I check the strap integrity for rot every couple of months when I remember.
All done by me and a mate that does some welding. Total weight 35kg for the frame, bolts. plates etc...
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I used to think that a tank bolted in would be better, but i am not convinced now. A tank bolted in has absolutely no give, it is rigid, and as one of the previous posts pointed out, the forces involved are absolutely immense. I strongly suspect the bolts would simply shear off in the event of i higher speed impact. Proper load securing straps are woven, so by their nature they are going to have some 'give', which would absorb a good portion of the forces.
If you think about it, that is exactly the same principle of how car safety has moved on so far in the last few decades. It used to be thought that simply making the car extremely strong was the best way, but of course this made the car effectively rigid, transferring all of the force of the impact directly to the occupants with potentially dire consequences. Cars now are designed to crumple, to absorb the force of the impact.
Another point is, why out of all van drivers, do window cleaners need to have their loads bolted in and/or crash tested?. What proportion of the vans on the road have their loads bolted in?. I would guess it will be absolutely tiny!. So if a builder thinks it is perfectly safe to secure a ton of bricks on a pallet in the back of his van using straps, why would it be unsafe to do the same with a box full of water?. Truck drivers use straps to secure loads many many times heavier than what any of us are going to be carrying.
For an extra 'safety' feature, i have been thinking of having an engineering shop make up a (shallow) 'V' shaped bit of metal, which would be welded on to my 'b' pillars about 8" above the load bay floor with the point facing to the rear. If, in the event of an accident, and if my tank then moved forward, the point of the 'V' would puncture the tank, releasing the water.
One last thing. Personally, i find it quite ironic the views on here regarding tank security, when attitudes in general to payloads and gvw are so lax. If you are quite unconcerned about driving around overweight with all the safety implications that entails such as overheating brakes, over stressing axles, bearings, etc (or even unwilling to accept that you may be), then i find it bizarre and more than a little contradictory that such strong views are being posted!.
Ref bolting, the idea is that with Ionics, the cage distorts. With Grippa and Purefreedom, the van crumples - look at the after pics and the van is bent in the middle - absorbs a lot of energy.
The paragraph about builders, I've highlighted. Don't confuse a builder being prepared to do something with it being safe.
I think the puncture idea forgets that the water isn't going to be sloshing forward; it's going to be slamming forward. There's going to be no time for it to get out of the tank in any meaningful way.
Agree ref payloads, etc.
Vin
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Depends if you have an upright or layflat tank. The strapping angles are all wrong on an upright tank.
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I used to think that a tank bolted in would be better, but i am not convinced now. A tank bolted in has absolutely no give, it is rigid, and as one of the previous posts pointed out, the forces involved are absolutely immense. I strongly suspect the bolts would simply shear off in the event of i higher speed impact. Proper load securing straps are woven, so by their nature they are going to have some 'give', which would absorb a good portion of the forces.
If you think about it, that is exactly the same principle of how car safety has moved on so far in the last few decades. It used to be thought that simply making the car extremely strong was the best way, but of course this made the car effectively rigid, transferring all of the force of the impact directly to the occupants with potentially dire consequences. Cars now are designed to crumple, to absorb the force of the impact.
Another point is, why out of all van drivers, do window cleaners need to have their loads bolted in and/or crash tested?. What proportion of the vans on the road have their loads bolted in?. I would guess it will be absolutely tiny!. So if a builder thinks it is perfectly safe to secure a ton of bricks on a pallet in the back of his van using straps, why would it be unsafe to do the same with a box full of water?. Truck drivers use straps to secure loads many many times heavier than what any of us are going to be carrying.
For an extra 'safety' feature, i have been thinking of having an engineering shop make up a (shallow) 'V' shaped bit of metal, which would be welded on to my 'b' pillars about 8" above the load bay floor with the point facing to the rear. If, in the event of an accident, and if my tank then moved forward, the point of the 'V' would puncture the tank, releasing the water.
One last thing. Personally, i find it quite ironic the views on here regarding tank security, when attitudes in general to payloads and gvw are so lax. If you are quite unconcerned about driving around overweight with all the safety implications that entails such as overheating brakes, over stressing axles, bearings, etc (or even unwilling to accept that you may be), then i find it bizarre and more than a little contradictory that such strong views are being posted!.
Ref bolting, the idea is that with Ionics, the cage distorts. With Grippa and Purefreedom, the van crumples - look at the after pics and the van is bent in the middle - absorbs a lot of energy.
The paragraph about builders, I've highlighted. Don't confuse a builder being prepared to do something with it being safe.
I think the puncture idea forgets that the water isn't going to be sloshing forward; it's going to be slamming forward. There's going to be no time for it to get out of the tank in any meaningful way.
Agree ref payloads, etc.
Vin
Wrong, I've seen it happen, it bursts out of the lid big time.
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My 1000L IBC is stuck down with blu-tac.
That's dangerous. Use Gardiner's epoxy resin.
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Wrong, I've seen it happen, it bursts out of the lid big time.
"Wrong"?
I was talking about something completely different from what you were posting about. You were posting about some of the water coming out of a Brodex tank. I was posting about a deliberate puncture at the front of a tank.
I've just remembered why I try not to comment on this subject. I shouldn't have posted in the first place; it's too emotive.
Vin
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Wrong, I've seen it happen, it bursts out of the lid big time.
"Wrong"?
I was talking about something completely different from what you were posting about. You were posting about some of the water coming out of a Brodex tank. I was posting about a deliberate puncture at the front of a tank.
I've just remembered why I try not to comment on this subject. I shouldn't have posted in the first place; it's too emotive.
Vin
The puncture concept would work IMO. If you don't want to post, goodbye. ::)roll
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There are some vans which have a large 'step' (not sure exactly how big, maybe 6") up from the floor of the load bay to the floor of the cab behind the seats, this is a cross member which forms an integral part of the vans structure. If i had one of those, i would have no worries whatsoever about strapping the tank (flat tank that is) in, as it would not physically be able to go any further forward than the step. Vans which i know have this feature are citroen dispatch, fiat scudo, peugeot expert (it is for this reason my next van is likely to be one of these three) and mercedes vito.
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I'd still be worried - upright tank is going to rip the strap mountings out and naturally tip forward.
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I'd still be worried - upright tank is going to rip the strap mountings out and naturally tip forward.
I think it's a given that a flat or box tank is more suitable.
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I'd still be worried - upright tank is going to rip the strap mountings out and naturally tip forward.
I think it's a given that a flat or box tank is more suitable.
Yup flat tank has lower centre of gravity so their fore less risk of catastrophic shift surely , Would never consider an upright tank . Mike
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today I completed a safe loading module(7 hours theory and practical) as part of my drivers CPC training, I specifically mentioned to the instructor this post and he confirmed that straps following the correct theory is perfectly fine in a panel van
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so ....... what is the correct theory ???
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I'd still be worried - upright tank is going to rip the strap mountings out and naturally tip forward.
It is for that reason i said flat tank, and would never use an upright one ::)roll
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the basic rules without going into it to much, is forward motion 100% side motion 50% and rear motion 50% low centre of gravity as possible and using the centre line of the vehicle.
so a 800 kg payload vehicle with a bulk head for example, as long as the tank is flush with bulk head no forward restraints required, you would need to stop side movement with straps rated to 400 kg and rear to 400kg(this is presuming a tank weight of 800 kg which none of us do)
I said I did it with 2 ratchet straps going from corner to corner and he said that was perfectly fine and in fact it could be done with 1
I mentioned the fact the anchor points in van were no way up to holding 800kg and he said of course not, they are not meant to be, as he put it I am carrying 25 tonnes on my truck but I only use 2 tonnes straps, but at the correct angles and the correct amount that is all that is required
hope the above makes sense, oh and there is nothing wrong with using chassis either but he was a bit concerned that people may be drilling into them could do more harm than good if not done correctly
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my 400L tank is strapped in top and back via the floor bolts. My back is protected by a metal sheet, its a ford escort old BT van.
I had a crash at 20 MPH last year and the tank only moved a few centimeters. I did have to empty the tank to push it back but it took less than a minute.
All my round is local so I don't actually drive faster that 30 anyway.
everybody around you on the road don't drive faster than 30 like you? i don't think so so your comment is silly!
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my 400L tank is strapped in top and back via the floor bolts. My back is protected by a metal sheet, its a ford escort old BT van.
I had a crash at 20 MPH last year and the tank only moved a few centimeters. I did have to empty the tank to push it back but it took less than a minute.
All my round is local so I don't actually drive faster that 30 anyway.
everybody around you on the road don't drive faster than 30 like you? i don't think so so your comment is silly!
no its not, liquid is known as live load and driving speeds should be reduced to reflect that, it makes perfect sense
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i think its a joke people are trying to say straps are more secure than bolts to the chassis, feel sorry for the noobie who reads this posts and goes for the cheaper alternative, especially if he/she has kids and god forbid an accident does happen.
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Anyone been in an accident with tank that is strapped down
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Anyone been in an accident with tank that is strapped down
Yes
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i think its a joke people are trying to say straps are more secure than bolts to the chassis, feel sorry for the noobie who reads this posts and goes for the cheaper alternative, especially if he/she has kids and god forbid an accident does happen.
I don't think anyone has suggested that, a properly secured load to a chassis is always good, but there is nothing wrong with straps either IMO, I would not say it is better, just perfect legal and safe
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i think its a joke people are trying to say straps are more secure than bolts to the chassis, feel sorry for the noobie who reads this posts and goes for the cheaper alternative, especially if he/she has kids and god forbid an accident does happen.
No ones actually said anything about being more secure, they just said it would be it would be secure
Its like holding a bar with two 50kg weights on each side. If you hold it with one hand you struggle, with two hands its easier as you spread the load. If you hold the bar in the middle its harder than holding at each end as you are distributing the weight rather than focusing it at one point.
Same with the straps.... If you just have your cage bolted to the floor/chassis then you are are only still relying on the floor panels/chassis on holding there integrity, just as with straps.
But having an 800kg tank (for example) with two 400kg ratchets at either end you are distributing the weight evenly so each strap takes 400kg worth of force not the full 800.
From how i understand it (may be wrong)If you're make sure you have them strapped on each side with the two straps they will actually be taking less weight than that...
I agree that using spreaders etc is safe, but i dont think to just turn around a say ratchets are no good is wrong...
(Feel free to tell me i'm wrong, i might be, thats just how ive understood it)
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I eat bacon
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i think its a joke people are trying to say straps are more secure than bolts to the chassis, feel sorry for the noobie who reads this posts and goes for the cheaper alternative, especially if he/she has kids and god forbid an accident does happen.
I know, just imagine what might happen if stuart m, or any 'noobie' pays any attention whatsoever to a trained cpc instructor who has told them that not only is strapping your tank in perfectly safe, but also shown them how to do it, i mean what would a trained cpc instructor know!
;D
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I been in a hit at just under 30mph back in 2008,i had a 400 l
upright baffled tank in a transit connect.It was strapped in with 3 x 10
tonne straps and was connected to the anchor points.
Got hit up the arse and the tank moved about 6 inches sideways.
Straps themselves are fine they are tested to destruction and
the webbing are rated at 6:1,a 10t strap basically will okay for
a shock load force up to 60t if it has a safe working load(swl)
it is a quality strap....cheaper straps tend to have a minimum breaking
load on them(mbl) and are of inferior quality.
The real weakness within strapping system are the metal fittings
attached,claw hooks delta links these only proof rated at 2:1
If you are going to use straps dont buy poope from ebay go to
a reputable lifting gear and handling company with the equipment
you will get a test certificate or at least a certificate of conformity
this will tell you the product is fit for purpose
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Up against the bulk head and rachet strapped to anchor points. Perfectly safe enough. End of the day not much more protection if you were in a car and hit at the speeds quoted. Or pay a premium
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I'll be ratchet strapping a 210 litre upright tank into a Berlingo shortly, should be fine up against the rear seats. Been using 25 litre containers and trolley/ backpack set up, took pump/battery box housing off trolley and mounted it in vehicle ready for the tank
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I had a brodex e compact in a vauxhall astravan for a number of years, that was installed with the tanksafe brackets and as i had modified the chassis by driling great big holes in it, it was classed as a modified vehicle so it was more to insure.
Now if you strap your tank down using racthet straps and the load posts provided, its not a modification as your transporting stuff as per design. Really you only need to worry if you are over your payload. Also, drive slower ans yoy minimize your risks.
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A few years ago i remember seeing a daihatsu hijet window cleaners van for sale on ebay. It had 2x220l tanks, one strapped to the backrest of each front seat....... :o
Some people obviously have no respect for their own safety ::)roll
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So long as you don't overload your vehicle I would imagine you are safe enough using the anchor points. That is what they are for. Securing your load. You are never going to be 100% safe in any accident, because, well, it's an accident. The forces involved during a collision are indeed huge but the manufacturers were aware of that when they designed the anchor points.
Don't overload them though...