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Biosafety Manual PDF - Lawrence Berkeley National Laboratory

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<strong>Biosafety</strong> <strong>Manual</strong><br />

IBC-approved version (May 18, 2010)<br />

Present<br />

at<br />

LBNL<br />

<strong>Biosafety</strong><br />

Level (BL)<br />

Table 8<br />

<strong>Laboratory</strong> <strong>Biosafety</strong> Containment Levels<br />

<strong>Biosafety</strong> Level Definition<br />

yes 1 BL1 is suitable for work involving agents of unknown or minimal<br />

potential hazard to laboratory personnel and the environment, 1 or<br />

work with defined and characterized strains of viable microorganisms<br />

not known to consistently cause disease in healthy adult humans. 2<br />

2 BL2 is suitable for laboratory work involving agents of moderate<br />

potential hazard to personnel and the environment. 1 Primary hazards<br />

to personnel working with these agents relate to accidental<br />

percutaneous or mucous membrane exposures, or ingestion of<br />

infectious materials. 2<br />

no 3 BL3 is applicable to facilities in which work is conducted with<br />

indigenous or exotic agents that may cause serious or potentially<br />

lethal disease as a result of exposure by the inhalation route. 3<br />

4 BL4 is required for work with dangerous and exotic agents that pose<br />

a high individual risk of life-threatening disease, aerosol transmission,<br />

or related agents having an unknown transmission risk. 3<br />

Footnotes:<br />

1 NIH Guidelines<br />

2 BMBL, fifth edition, Section III<br />

3 BMBL, fifth edition, Section IV<br />

When developing the <strong>Biosafety</strong> Work Authorization, the appropriate laboratory BL must be<br />

selected after conducting the risk assessment. Typical BLs used for various materials and<br />

agents are listed in Sections 4.4.1.1 and 4.4.1.2 of this manual. The final BL(s) are determined<br />

by the IBC.<br />

4.4.1.1 <strong>Laboratory</strong> <strong>Biosafety</strong> Level 1<br />

BL1 laboratories are not necessarily separated from the general traffic patterns in the building.<br />

Work is typically conducted on open benchtops using standard microbiological practices.<br />

Special containment equipment or facility design is not required, but may be used as<br />

determined by a risk assessment. <strong>Laboratory</strong> personnel must have specific training in the<br />

procedures conducted in the laboratory and must be supervised by a scientist trained in<br />

microbiology or a related science.<br />

Printed copies are not official versions of this manual. Before using the printed copy, verify that it is the most current version.<br />

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