This is a progressive step from ADAS Part 2 and includes the use of surface-supplied breathing apparatus. The qualification significantly increases the diver‘s ability to operate under working situations including the use of wet bells, deck decompression chambers and other work related subjects to meet offshore diving industry requirements.

The objective of Part 3 training is to prepare Part 2 Divers to both safely and competently:

• Dive on SSBA to depths of 50m
• Use hydraulic tools at depths to 50m
• Conduct decompression dives using in water decompression and SurDO2
• Act as chamber operators
• Dive using hot water suits, and operate hot water generators
• Engage in diving operations using wet bells as an in-water standby diver and surface standby diver

Before applicants commence ADAS SSBA to 50m (Part 3) training, the ATE must ensure that they:

• Hold either a current ADAS Part 2 qualification or approved equivalent, have qualified at an ADAS Part 2 course in the previous one month or are currently engaged in an integrated Part 2 – 3 course.
• Are in possession of a valid certificate of medical fitness to dive (see AS/NZS 2299.1) issued, after examination, by a doctor trained and experienced in underwater medicine in accordance with the requirements in AS/NZS 2299.1, and that certification remains valid until the scheduled completion date of the training being undertaken. If the applicant’s health has changed significantly since the medical certificate was issued, the applicant shall seek an appropriate medical review.
• Hold either a recognised current Diver Medic Technician certificate or a current First Aid certificate from an accredited training organization (i.e. has been certified within 3 years of the conclusion of the proposed training program) and CPR and oxygen resuscitation skills must have been refreshed within the 12 month period prior to the conclusion of the training program. The student’s First Aid qualifications must meet the competency requirements of AS/NZS 2299.1 Occupational diving operations standard operational practice.
• Unless Non-English Language (NEL) speaking course arrangements have been made with ADAS, can understand written and verbal communication in English, and can communicate effectively in English with other persons.
• Is able to add, subtract, multiply and divide whole numbers, decimals and vulgar fractions; calculate percentages; and transpose and solve simple formulas, eg gas laws.