# Commercial Diving Operations
> **Occupational Safety and Health Administration** · Final rule. · Published 2004-02-17 · Effective 2004-03-18 · 69 FR 7351
## Document
- **Document number:** 04-3289
- **Category:** osha-workplace-safety
- **Sub-agency:** Occupational Safety and Health Administration
- **Federal Register citation:** 69 FR 7351
- **CFR reference:** 29 CFR 1910
- **Publication date:** 2004-02-17
- **Effective date:** 2004-03-18
- **DOL docket:** Docket No. S-550
## Abstract

OSHA is issuing this final rule to amend its Commercial Diving Operations (CDO) standards. This final rule allows employers of recreational diving instructors and diving guides to comply with an alternative set of requirements instead of the decompression-chamber requirements in the current CDO standards. The final rule applies only when these employees engage in recreational diving instruction and diving-guide duties; use an open-circuit, a semi-closed-circuit, or a closed-circuit self-contained underwater-breathing apparatus supplied with a breathing gas that has a high percentage of oxygen mixed with nitrogen; dive to a maximum depth of 130 feet of sea water; and remain within the no-decompression limits specified for the partial pressure of nitrogen in the breathing-gas mixture. These alternate requirements essentially are the same as the terms of a variance granted by OSHA to Dixie Divers, Inc. in 1999.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2004/02/17/04-3289/commercial-diving-operations)
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