EXCEPTION NO . 1: Inspection doors or clean-out doors in exhaust ducts required by Section 5143(a)(3) do not apply to laboratory-type hood operations.
EXCEPTION NO . 2: Biological safety cabinets as defined below are exempt from the requirements of this section. Class II biological safety cabinets may be used to prevent harmful exposure to cytotoxic agents during their compounding or preparation for parenteral use. Biological safety cabinets may be used to control harmful exposure to aerosols and particulate matter, provided the presence of the substance in the biological safety cabinet does not present a risk of fire or explosion. When biological safety cabinets are used to control exposure to these hazards they shall meet the requirements of Section 5154.2.
Biohazard agent means a replication capable pathogen which is a disease causing microorganism and is capable of causing diseases in humans including viruses, microbes and sub viral agents. The agent includes the agent, products of infectious agents, or the components of infectious agents presenting a risk of illness or injury.
Biohazardous materials are any materials that would harbor biohazardous agents such as human blood, body fluids, or tissues that may be contaminated with biohazardous agents.
Biological safety cabinet. A ventilated cabinet which serves as a primary containment device for operations involving biohazard agents or biohazardous materials. Three classes of biological safety cabinets are described in Section 5154.2.
Hazardous Substance. One which by reason of being explosive, flammable, poisonous, an irritant, or otherwise harmful is likely to cause injury or illness if not used with effective control methods.
Laboratory-Type Hood. A device enclosed except for necessary exhaust purposes on three sides and top and bottom, designed to draw air inward by means of mechanical ventilation, operated with insertion of only the hands and arms of the user, and used to control exposure to hazardous substances. These devices are also known as laboratory fume hoods.
The tracer gas test need only be performed once per hood. However, if employers have chosen to perform the tracer gas test on subsequent occasions, it is the most recent record of test results and test configuration that shall be maintained pursuant to subsection (c)(2)(C).
EXCEPTION TO SUBSECTION (3)(B)2.: The frequency of the tests may be reduced to every two years if a calibration and maintenance program is in place for the quantitative airflow monitor or alarm system.
FIGURE V-9EXAMPLE OF A CONCENTRIC-DUCT SELF-DRAINING STACK
EXCEPTION: Portable laboratory scrubbing apparatus for perchloric acid digestions may be used in lieu of the special requirements of this paragraph.
Cal. Code Regs. Tit. 8, § 5154.1
2. Editorial correction of subsection (e)(4) (Register 76, No. 48).
3. Amendment of subsections (b) and (e)(4) filed 4-16-80; effective thirtieth day thereafter (Register 80, No. 16).
4. Amendment filed 10-11-94; operative 11-10-94 (Register 94, No. 41).
5. Amendment filed 7-31-2006; operative 8-30-2006 (Register 2006, No. 31).
6. Change without regulatory effect providing more legible illustration for Figure V-9 filed 3-2-2009 pursuant to section 100, title 1, California Code of Regulations (Register 2009, No. 10).
Note: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.
2. Editorial correction of subsection (e)(4) (Register 76, No. 48).
3. Amendment of subsections (b) and (e)(4) filed 4-16-80; effective thirtieth day thereafter (Register 80, No. 16).
4. Amendment filed 10-11-94; operative 11-10-94 (Register 94, No. 41).
5. Amendment filed 7-31-2006; operative 8-30-2006 (Register 2006, No. 31).
6. Change without regulatory effect providing more legible illustration for Figure V-9 filed 3-2-2009 pursuant to section 100, title 1, California Code of Regulations (Register 2009, No. 10).