From: "Dewinkle, Gary M" <gary.dewinkle**At_Symbol_Here**PNNL.GOV>
Subject: Re: [DCHAS-L] Negative Pressure Laboratory Regulation or Standard
Date: August 6, 2012 10:39:35 AM EDT
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: <7D49DDEA5C85D74DB7983AAC7DC05E9F2175BC0C**At_Symbol_Here**>

ANSI/AIHA Z9.5  Laboratory Ventilation states: “As a general rule, airflow shall be from areas of low hazard to higher hazard unless the laboratory is used as a Clean Room or an isolation or sterile laboratory.” 

Gary De Winkle, CIH, CSP
Industrial Hygiene Programs Lead
Worker Safety & Health

Pacific Northwest National Laboratory
902 Battelle Boulevard
P.O. Box 999, MSIN J2-38
Richland, WA  99352 USA
Tel:  509-371-7026 


From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU] On Behalf Of Paul Weller
Sent: Monday, August 06, 2012 6:19 AM
Subject: [DCHAS-L] Negative Pressure Laboratory Regulation or Standard



Does anyone know if there is a regulation or standard which requires labs to have a negative pressure relative to hallways?  Thanks.


Paul Weller


Paul Weller

Science Laboratory Manager-Chemistry
Elon University

2625 Campus Box

Elon, NC 27244

Phone  336.278.6225




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