Basic Documentation

Table Of Contents
Laboratory Ventilation Codes and Standards
Siemens Industry, Inc. 102
Topic Requirement(s) Commentary
Room Supply
Air
(Continued)
ASHRAE, 2011 Handbook - HVAC Applications, Laboratories, Pg. 16.8
LABORATORY VENTILATION:
The maximum ventilation rates for the laboratories should be reviewed to ensure that
appropriate supply air delivery methods are chosen so supply airflows do not impede
the performance of exhaust devices.
American Institute of Architects, GUIDELINES FOR PLANNING AND DESIGN OF
BIOMEDICAL RESEARCH LABORATORY FACILITIES 1999
C.7.6 Air supplied to a laboratory space must keep temperature gradients and air
turbulence to a minimum, especially near the face of the laboratory fume hoods and
BSC’s. Air outlets must not discharge into the face of fume hoods. Also, cross-flows
that impinge on the side of a hood more seriously alter airflow than do cross-flows in
front of the hood.
C.11.3.b All laboratories shall have single pass air. The airflow shall be directed from
clean spaces to potentially contaminated areas and from low hazard to high hazard
areas. Air supply diffusers must be supplied with diffusers to direct flow away from
fume hoods and BSC’s in order to minimize potential disruptive air currents.