Re: [PSUBS-MAILIST] Decompressing a Lockout

[<timcaffarella@cox.net>]

The main requirement is that the air quality is safe for human life.

Unless that air is purified (oil removed etc.), it is not a viable option.  You may consider using air bottles and bank them.  

You are correct on the pressure required being relatively low.  

Tim Caffarella

> 
> From: "Cliff McDonald" <cmcdonald@applikonusa.com>
> Date: 2005/06/24 Fri PM 04:25:47 EDT
> To: "Personal_Submersibles" <personal_submersibles@psubs.org>
> Subject: [PSUBS-MAILIST] Decompressing a Lockout
> 
> I?ve been thinking back on some of the discussions of diver lockout
> operation and the need for a ?high pressure? compressor to decompress a
> lockout when at depth.  I may be headed down the wrong path in my thinking
> but I believe a relatively low pressure / low amperage / low volume
> compressor would suffice as far down as 200 fsw.  It only needs to be able
> to pump against approximately 100 psi of outside water pressure and must
> have somewhat of a low flow so that the lockout can be decompressed slowly.
> I?ve been looking at the specifications on the 12V air compressors used by
> 4WD enthusiasts to air tires back up after a day of running them off road at
> 6 ? 10psi.  These are huge tires.  The pumps that they use can put out about
> 1.7cfm of air at 90psig, in fact, they put out enough air to run a lot of
> basic air tools.  Many are rated to 150psig.  Considering that their cost is
> a few hundred dollars for a high quality pump and at least one of them only
> consumes about 10A at full rating, it seems to me that decompressing a diver
> lockout would not be that big of an obstacle.  Am I missing something here?
> Best Regards,
> Cliff McDonald
> 
> 




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