Re: [PSUBS-MAILIST] ABS Changes

[Jon Wallace <jonw@psubs.org>]

A few excerpts below which should be interesting to a number of folks.  
The document is definitely worth a thorough reading since there is 
definitely the potential of retrofitting for those of you who want to 
closely comply with ABS standards for your personal submarines.


Submersibles carrying more than six persons are to be fitted with at 
least two access hatches.

All hatches are to be operable from both internal and external sides.

Means are to be provided for equalizing pressure on each side of a hatch 
prior to hatch opening.

Submersibles are to be fitted with permanent nameplates indicating the 
design depth, maximum allowable working pressures/temperatures, 
hydrostatic test pressure, pressure hull manufacturer’s name, serial 
number, and year built. The nameplates are to be stainless steel or 
other suitable material and are to be permanently attached. This 
information is also to be stamped on a rim of a flange of the unit.

Permanent features for the attachment of recovery equipment are to be 
provided.

The quantity of water in the (hard) ballast tanks, along with their 
internal pressure, must be indicated at all times at the vehicle pilot 
stand.

Sections 23.3 and 23.5 (pertain to motor thru-hull shaft requirements)

Section 25: Navigational Equipment (lots of new requirements here)

Section 27 Communication Systems

Section 29 Emergency Locating Devices

All submersibles are to be provided with fire detection, alarm and 
extinguishing systems.
Saltwater is not to be used as an extinguishing agent.

Submersibles are to be provided with equipment to generate, monitor and 
maintain
suitable life support conditions inside the manned compartment.

When the battery compartment is located inside the submersible, a fan or 
similar device
is to be provided for positive ventilation of the compartment during 
charging and for a
suitable time before and after charging.





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