ISO 11107:2009

Recreational diving services - Requirements for training programmes on enriched air nitrox (EAN) diving

ISO 11107:2009 specifies the level of competence required of a scuba diver in order to be awarded an enriched air nitrox (EAN) diver certification by a training organization. ISO 11107:2009 also specifies the conditions under which training is to be provided, which supplement the general requirements for recreational diving services specified in ISO 24803.

Services relatifs à la plongée de loisirs — Exigences pour les programmes d'entraînement relatifs à l'air enrichi au nitrox

General Information

• Status: Published
• Publication Date: 08-Jun-2009
• ICS: 03.080.30 - Services for consumers
• ICS: 03.200 - Leisure. Tourism
• ICS: 03.200.99 - Other standards relating to leisure and tourism
• Technical Committee: ISO/TC 228 - Tourism and related services
• Drafting Committee: ISO/TC 228/WG 1 - Diving services
• Current Stage: 9060 - Close of review
• Completion Date: 04-Mar-2031

Overview

ISO 11107:2009 specifies minimum requirements for training programmes on enriched air nitrox (EAN) diving. It defines the level of competence a scuba diver must reach to receive an EAN diver certification from a training organization and sets conditions for how EAN training is delivered. ISO 11107:2009 supplements general recreational diving service requirements in ISO 24803 and was prepared by ISO/TC 228 (Tourism and related services).

Key topics and requirements

• Scope and competence
  • Competence to plan, conduct and log EAN open-water, no‑decompression dives when diving with at least an ISO 24801-2 (Autonomous diver) buddy.
  • Does not cover mandatory decompression dives, use of multiple gas mixes or rebreathers.
• Prerequisites
  • Parental/legal guardian consent for minors.
  • Medical screening or questionnaire and referral to a physician if necessary.
• Theoretical knowledge
  • What EAN is (breathing mixture with >21% oxygen).
  • Partial pressures and oxygen partial pressure (PO2) calculation.
  • Benefits of reduced nitrogen exposure (equivalent air depth, EAD) and dive planning implications.
  • Oxygen toxicity, narcosis and decompression illness causes, symptoms and first aid.
  • Equipment suitability and oxygen service considerations; cylinder markings and manufacturer guidance.
• Practical skills
  • Use of an oxygen analyzer to verify EAN blend.
  • Filling and labeling cylinder content tags and completing fill logs including oxygen content and maximum operating depth.
  • Use of EAN-capable dive tables, dive computers or planning software for single and repetitive dives.
• Safety limits
  • If open-water EAN dives are included in training, the maximum PO2 must not exceed 160 kPa (1.6 bar).
• Assessment and certification
  • Students must pass an oral or written exam testing knowledge in Clause 6 and demonstrate practical abilities (Clause 7).
  • Instructors must have formal EAN training to teach and assess per this standard.

Applications and users

ISO 11107:2009 is intended for:

• Training organizations and scuba diving agencies designing EAN diver courses.
• Dive operators and dive centres implementing safe EAN procedures and certification.
• Scuba instructors who teach EAN theory and practical skills.
• Recreational divers seeking recognized EAN certification and understanding of EAN safety, equipment and planning.

Practical uses include curriculum development, instructor qualification, student assessment, risk management for EAN fills, and consistent certification criteria across providers.

Related standards

• ISO 24803 - Requirements for recreational scuba diving service providers
• ISO 24801-2 - Level 2: Autonomous diver
• ISO 24802-1 / ISO 24802-2 - Safety requirements for scuba instructor training

Keywords: ISO 11107:2009, enriched air nitrox, EAN diving, EAN training, oxygen partial pressure, EAD, dive planning, scuba instructor certification.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 11107
First edition
2009-06-15
Recreational diving services —
Requirements for training programmes
on enriched air nitrox (EAN) diving
Services relatifs à la plongée de loisirs — Exigences pour les
programmes d'entraînement relatifs à l'air enrichi au nitrox

Reference number
©
ISO 2009
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ii © ISO 2009 – All rights reserved

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 11107 was prepared by Technical Committee ISO/TC 228, Tourism and related services.

Introduction
This International Standard specifies minimum requirements; it does not preclude the provision of additional
training or the assessment by a service provider of additional competences. This International Standard
represents a tool by which to compare existing (or future) qualifications of scuba divers who wish to dive with
enriched air nitrox (EAN).
iv © ISO 2009 – All rights reserved

INTERNATIONAL STANDARD ISO 11107:2009(E)

Recreational diving services — Requirements for training
programmes on enriched air nitrox (EAN) diving
1 Scope
This International Standard specifies the level of competence required of a scuba diver in order to be awarded
an enriched air nitrox (EAN) diver certification by a training organization.
This International Standard also specifies the conditions under which training is to be provided, which
supplement the general requirements for recreational diving services specified in ISO 24803.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 24801-2, Recreational diving services — Safety related minimum requirements for the training of
recreational scuba divers — Part 2: Level 2 — Autonomous diver
ISO 24802-1, Recreational diving services — Safety related minimum requirements for the training of scuba
instructors — Part 1: Level 1
ISO 24802-2, Recreational diving services — Safety related minimum requirements for the training of scuba
instructors — Part 2: Level 2
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
training organization
entity providing recreational scuba diving training systems and certification, and which is responsible for the
implementation and quality management of scuba diver training
NOTE The entity can include scuba diving federations and scuba diver training agencies.
3.2
certification
confirmation that a student has completed scuba diver training that fulfils all requirements in accordance with
this International Standard, as issued by training organizations
3.3
scuba instructor
individual qualified in accordance with ISO 24802-1 or ISO 24802-2, as appropriate
3.4
open water
body of water significantly larger than a swimming pool, which offers conditions typical of a natural body of
water
3.5
enriched air nitrox
EAN
breathable mixture of nitrogen and oxygen with more than 21 % oxygen content, which may contain trace
gases at levels no higher than those found in normal air
4 Competences of a certified enriched air nitrox diver
T
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