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Atomic SS1 Problems (SEP Issued Alternate Air Source)

Jan 09
Atomic SS1 air source for divers

Atomic SS1 alternate air source.

Memo issued by the NOAA Diving Control and Safety Board, January 9, 2018

NOAA Divers,

Two months ago (November 29th, 2017) NDC Manager David Kowalick sent out a message informing divers of three incidents where the inflation cap from the SS1 came free while the divers were adding gas to their BCDs. The inflation cap can come off as the diver tries to inflate the BCD causing gas to vent out of the opening and not into the BCD. Without the inflation cap the SS1 is unable to add gas from the tank to the BCD but will still operate as a manual (oral) inflation device for the BCD and as an alternate air source.


  1. During annual review or in the next month, all UDSs will review this issue with their divers and report to their LODO when divers have been apprised of the problem and solutions.
  2. Divers should immediately inspect their SS1s inflation cap to insure its presence or if it is damaged or loose. The inflation cap is the smaller of the two caps on the underside of the SS1. Any problems should be reported to the NDC and any problem SS1s should be immediately returned to NDC for inspection and repair. 
  3. Divers should inspect their SS1s inflation cap during their pre-dive checks.


  • Divers should practice manually (orally) inflating their BCDs. 

inflation caps, installed and removed

Inflation caps on the Atomic SS1 alternate air source.




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