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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 2010

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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 2010

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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 2010

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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 2010

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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 2010

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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 2010