- Part Number:1915
- Part Number Title:Occup. Safety and Health Standards for Shipyard Employment
- Subpart:1915 Subpart B
- Subpart Title:Confined and Enclosed Spaces and Other Dangerous Atmospheres in Shipyard Employment
- Standard Number:
- Title:Cleaning and other cold work.
- GPO Source:
Flammable vapor is maintained below 10 percent of the lower explosive limit; and
Note to paragraph (b)(3)(i): Spaces containing highly volatile residues may require additional ventilation to keep the concentration of flammable vapors below 10 percent of the lower explosive limit and within the permissible exposure limit.
Testing shall be conducted by the competent person as often as necessary during cleaning or cold work to assure that air concentrations are below 10 percent of the lower explosive limit and within the PELs and below IDLH levels. Factors such as, but not limited to, temperature, volatility of the residues and other existing conditions in and about the spaces are to be considered in determining the frequency of testing necessary to assure a safe atmosphere.
Note to paragraph (b)(4): See Appendix A for additional information on frequency of testing.
Respiratory protection, personal protective equipment, and clothing are provided in accordance with subpart I of this part.
Note to paragraph (b)(6): Other provisions for work in IDLH and other dangerous atmospheres are located in Subpart I of this part.
Only explosion-proof, self-contained portable lamps, or other electric equipment approved by a National Recognized Testing Laboratory (NRTL) for the hazardous location shall be used in spaces described in paragraph (a) of this section until such spaces have been certified as "Safe for Workers."
Note to paragraph (b)(9): Battery-fed, portable lamps or other electric equipment bearing the approval of a NRTL for the class, and division of the location in which they are used are deemed to meet the requirements of this paragraph.
Fans shall have non-sparking blades, and portable air ducts shall be of non-sparking materials.
Note to paragraph (b): See 1915.12(c) of this part and applicable requirements of 29 CFR part 1915, subpart Z for other provisions affecting cleaning and cold work.
[59 FR 37816, July 25, 1994]