With a view to assessing and checking the effective performance
of the device in the course of time and under stress, we recruited
the assistance of a group of divers of exceptional experience
and professionalism, from the Italian Fire Service and the Pelizzari
team.
G. Massimo Giudicelli, head of the division and head diver
in the team, carries out daily training and emergency underwater
assistance operations together with his team on a daily basis.
In addition, as safety officers, they also take part in the
training and record attempts of the diver Umberto Pelizzari,
who currently holds the following world diving titles:
- 80 m in constant position
- 150 m in no limits position
We chose this team to check the response of the device in
the normal underwater emergency situations and in limit conditions
in diving. |
| Test parameters
and operating conditions |
| Number of
divers |
8 |
| Maximum
operating depth |
-135 m approximately |
| Duration
of dives |
from a minimum
of 60 to a maximum of 160 minutes |
| Decompression
times |
from a minimum
of 15 to a maximum of 150 minutes |
| Dives with
air and Trimix mixture |
Yes |
| Decompression
with oxygen |
Yes |
| Frequency
of dives |
4 a week |
| Months of
dives |
throughout
the year |
| Average
water temperature |
between
10 and 20 °C |
| Duration
of the test |
2 years |
| Mean number
of dives |
330 approximately |
|
| Back-up and Assistance Diving Tea,
of Umberto Pelizzari |
- 10m Bortolus Luca SMZT- VF, assiste l'atleta Umberto
Pelizzari nella preparazione subacquea, interviene in caso
di malore e assiste il 3° profondista per tutta la Decompressione.
- 35m Ferrari Ivan SMZT - VF, assistente
 
1° segnale di passaggio e
ultimo .
Assiste il 2° profondista per tutta la Decompressione.
- 50m Boggio Daniele VF , assistente ,
2° segnale di passaggio
e 3° segnale .
Assiste il 1° profondista per tutta la Decompressione.
- 65m Mondalucio Corrado SMZT - VF, assistente
.
Unico segnale vocale
.
- 80m Pinnizzoto Ivano SMZT - VF, assistente
3° segnale e
2° segnale .
- 100m .Samuel Carnelos Aiuto Istruttore Deep Diving, assistente
.
1° profondista a Mix (11% O2 - 60% He -29 %N2) , 4°
segnale e
1° segnale .
- 135m . Gnuva Alberto Istruttore Subacqueo Trimix ,assistente
2° profondista a Mix, ( 10% O2 - 63% He - 27 %N2), aziona
la manovra del pallone di risalita dell’atleta. Tecnico
tabelle decompressioni
- 135m . Giudicelli G.Massimo, Istruttore SMZT - VF, Capo
Reparto dei Vigili del Fuoco Isola d’Elba, incarico:
Responsabile sommozzatore della Squadra. -135m 3° profondista
a Mix . Assiste l’atleta Umberto Pelizzari nell’uscita
dalla Slitta /Zavorra.
| Legend:
SMZT = Diver. VF = Fire service.
=
direction of dive, down and up Mix = mixture of
oxygen, helium and nitrogen used. |
|
| Conclusioni
For people like us, for whom underwater diving
is a job, it's essential to be able to use reliable, technologically
advanced equipment. The results obtained with this new mouthpiece
after two years' use in all types of operating conditions
enable us to confirm its high quality. The benefits noted
by the whole team are such that we feel it would be impossible
to return to using traditional mouthpieces today. Consequently,
we would have no hesitation in recommending this mouthpiece
to professional and amateur divers. We also believe it is
to be highly recommended for underwater fishing purposes.
Signed: G. Massimo Giudicelli |
|
|
| Final report by Massimo
G. Giudicelli
On 12/02/98 the manufacturer supplied us
with 20 mouthpieces, which were distributed to each member
of the team for customisation in accordance with the manufacturer's
instructions. We fitted this new anatomical and physiological
mouthpiece to the traditional air, oxygen and mixture distributors.
The underwater tests began on 19/02/98.
All the members of the team immediately
noted the excellent adhesion to the teeth and the extension
of the mouthpiece grip element as far as the back teeth. This
guarantees excellent stability of the device and avoids the
need to keep the teeth constantly clenched, which was a typical
problem with the traditional mouthpieces.
The greatest advantage noted in using
these mouthpieces underwater was the relaxation of the mouth
muscles, and those of the jaw in particular. For the diver,
this means greater safety, especially in medium and long duration
dives. The stability of the mouthpiece was extraordinary.
During the customisation process, the grip surface shapes
itself to the teeth, guaranteeing solid fixing and a firm,
stable grip, all to the benefit of safety, especially
in the event of accidental shock or strong currents that can
knock the mouthpiece out of the mouth.
The mouthpiece was surprisingly long
lasting. We carried out more than 300 dives, none of the
team members experienced breakage or tearing and all the devices
remained in perfect condition. This extraordinary fact can't
be ignored, especially if we consider that the duration of
the standard mouthpieces used by professional divers is limited
to a maximum of 10 to 15 dives, due to the breakage of the
holding pin which is inserted between the teeth.
|
|
