4408 version 2
28-Jun-16
1 of 6
DIVING - OCCUPATIONAL
Dive in open water using SCUBA
equipment to 30 metres
level:
4
credit:
8
planned review date:
June 2002
sub-field:
Diving
purpose:
People credited with this unit standard are able to dive in
open water conditions to 30 metres using SCUBA
apparatus, demonstrate a knowledge of the physics and
physiology of diving, identify possible diving hazards, and be
aware of precautions needed to prevent and/or avoid them.
entry information:
Open.
accreditation option:
Evaluation of documentation and visit by NZQA and
industry.
moderation option:
A centrally established and directed national moderation
system has been set up by the Dive Industry Training
Organisation.
 New Zealand Qualifications Authority 2016
4408 version 2
28-Jun-16
2 of 6
DIVING - OCCUPATIONAL
Dive in open water using SCUBA
equipment to 30 metres
special notes:
1
Industry criteria refer to diving practice complying with
the requirements of the Health and Safety in
Employment Act 1992 and subsequent regulations
relating to Occupational Diving; and comply with the
theory and practice requirements of the British Health
and Safety Executive (HSE) 1990 to ensure the
international standard is maintained. All practice also
complies with Accident Rehabilitation & Compensation
Insurance Corporation and Occupational Safety and
Health (OSH) guidelines.
2
Boyles’ Law states that if the temperature is kept
constant the volume of a given gas will vary inversely to
its absolute pressure.
3
Archimedes’ Principle describes the fact that an object
immersed in a liquid is buoyed up by a force equal to
the amount that the object displaces. If an object
displaces more than it weighs, it will float. If the object
displaces the same amount as its weight, it is described
as neutral. In the diving situation, the diver has the
ability through buoyancy control, to establish positive,
negative and neutral buoyancy at will.
 New Zealand Qualifications Authority 2016
4408 version 2
28-Jun-16
3 of 6
DIVING - OCCUPATIONAL
Dive in open water using SCUBA
equipment to 30 metres
Elements and Performance Criteria
element 1
Demonstrate knowledge of the physics and physiology of diving.
performance criteria
1.1
Archimedes’ Principle is explained in relation to buoyancy.
1.2
Boyles’ Law is explained in relation to ascent and breathing.
1.3
Ears are cleared achieving equilibrium on ascent and descent.
1.4
Ascent demonstrates breathing techniques at pre-determined rate .
element 2
Use SCUBA apparatus.
performance criteria
2.1
Use of free and fixed mouth pieces meets manufacturer’s specifications.
2.2
Use of positive and/or neutral pressure masks meets manufacturer’s
specifications.
2.3
Reserve system operated matches set in use.
2.4
Communication system meets industry criteria.
 New Zealand Qualifications Authority 2016
4408 version 2
28-Jun-16
4 of 6
DIVING - OCCUPATIONAL
Dive in open water using SCUBA
equipment to 30 metres
element 3
Dive in open water conditions to 30 metres.
performance criteria
3.1
Water entry technique meets industry criteria.
Range:
beach, jetty, small vessel.
3.2
Wet suit use takes into account limitations in cold water and buoyancy
reduction due to compression of closed cell foam at depth.
3.3
Varied buoyancy and neutral buoyancy are achieved using suit inflation and/or
an adjustable buoyancy life vest.
3.4
Reduction in air supply is accounted for when suit inflation is taken from the
reserve air.
3.5
Inflation and deflation of dry suit are in relation to depth.
3.6
Dive practice in different environments meets industry criteria.
Range:
muddy, rocky and weed covered bottoms, mid water in 0.5 knot
currents, no visibility, altitude.
3.7
Command signal is awaited before leaving surface and/or bottom.
3.8
Signal on return to surface indicates diver’s condition.
 New Zealand Qualifications Authority 2016
4408 version 2
28-Jun-16
5 of 6
DIVING - OCCUPATIONAL
Dive in open water using SCUBA
equipment to 30 metres
element 4
Identify possible hazards, and be aware of precautions needed to prevent or avoid them.
performance criteria
4.1
Possible trapping hazards for divers are identified.
Range:
4.2
gates, sluices, culverts, sewers, intakes and outfalls, marine piers
and jetties, vessels.
Precautions when diving around possible hazards are described to industry
criteria.
Range:
accelerated water flow and pressure differentials, lifeline free from
snagging, retrace lifeline on returning to surface, nets, lines.
4.3
Lifting operations carried out on site are connected with dive.
4.4
Signal use warns other vessels.
Range:
light, flag, shape.
4.5
Tying off descriptions meet industry criteria.
4.6
Marine life hazards are identified.
4.7
Dive authorisation needs are identified.
Range:
harbour master, operation installation manager, master of vessel.
 New Zealand Qualifications Authority 2016
4408 version 2
28-Jun-16
6 of 6
DIVING - OCCUPATIONAL
Dive in open water using SCUBA
equipment to 30 metres
Comments to:
Dive Industry Training Organisation
Unit Standard Revision
PO Box 160
WELLINGTON
by June 2002.
Please Note:
Providers must be accredited by the Qualifications Authority
before they can offer programmes of education and training
assessed against unit standards.
Accredited providers assessing against unit standards must
engage with the moderation system that applies to those unit
standards. [Please refer to relevant Plan ref: 0180]
 New Zealand Qualifications Authority 2016