4422 version 2

10-Mar-10

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DIVING - OCCUPATIONAL
Use self-contained rebreathing systems while diving

level:5

credit:12

planned review date:June 2002

sub-field:Diving

purpose:People credited with this unit standard are able to use self-contained O2 and mixed gas rebreathing systems, demonstrate knowledge of these breathing systems and their associated hazards, and carry out post-dive equipment checks as a diver or other member of the team.

entry information:Prerequisites: Unit 6401, Provide first aid, Unit 6402, Provide resuscitation level 2; Unit 4408, Dive in open water using SCUBA equipment to 30 metres; Unit 4409, Execute surface diving procedures; Unit 4411, Demonstrate emergency procedures as stand-by diver on the surface and in the water; Unit 4412, Complete underwater search, inspection, and survey using SCUBA; Unit 4414, Complete in-water decompression for routine dives and therapeutic operations; Unit 4415, Recognise diving related ill-health conditions; or demonstrate equivalent skills and knowledge;and 20 hours logged open water diving experience are required prior to commencing this unit standard and hold a current Medical Clearance to dive and occupational-specific certificate of competence.

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.

special notes:1Breathing equipment is used to the maximum depth permitted for the type of equipment and gas being used.

2Industry 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.

Elements and Performance Criteria

element 1

Demonstrate knowledge of closed and semi-closed self-contained breathing systems and their associated hazards.

performance criteria

1.1Description of breathing systems covers closed and semi-closed self-contained breathing systems and their associated hazards.

Range:system operation, risks, hazards and the use of pure oxygen and oxy-nitrogen mixtures.

1.2Diving hazards are identified and precautions described to industry criteria.

Range:impressed current cathodic protection, sonar transmissions, propellers and thrusters, subsea electrical units maximum safe depths, equivalent air depths and diving ills associated with mixed gas diving.

element 2

Use rebreathing systems while diving.

performance criteria

2.1Dives are to maximum depth allowed for gas mixtures and meet industry criteria.

Range:on pure O2, oxy-nitrogen mixtures.

2.2Emergency drills relating to the use of rebreathing systems meet industry criteria.

element 3

Carry out post-dive equipment checks as a diver or other member of the team.

performance criteria

3.1Assessment of equipment on completion of dive is reported and identifies any damage.

3.2Equipment is maintained to industry criteria.

Range:fresh water is used, lubricants are applied to metal surfaces and connections, oral and/or nasal mouth pieces and metal surfaces are disinfected.

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 2018