Atmosphere Absolute (ATA) : (Hcf-Hyp) The pressure of the earth's atmosphere, 760. 0 mmHg, 101. 325 kPa, or 14. 7 psia. Two ATA = two atmospheres. See also: Atmosphere
NFPA 99 Standard for Health Care Facilities, 2002 ed. https://law.resource.org/pub/us/cfr/ibr/004/nfpa.9 9.2005.pdf, (Std: Hlth Care Fcilty - Amer) {242 NFC}