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Preliminary Survey Report: Control Technology for Engineering Controls in Hospitals at Mercy Medical Center, Denver, Colorado.

Authors
Spottswood-SE; Kercher-SL
Source
NIOSH 1983 Apr:23 pages
Link
NIOSHTIC No.
00130214
Abstract
Gas sterilization and anesthesia administration operations at the central supply department and operating rooms (OR) of the Mercy Medical Center (SIC-8062) Denver, Colorado, were evaluated on October 28, 1982. The study was conducted to assess the efficiency of control measures used to reduce exposures to low concentrations of hazardous chemical substances. Gas sterilization with ethylene- oxide (75218) (EtO) was employed to sterilize heat sensitive equipment and materials in the central supply department. The primary engineering control used in the sterilization area was general dilution ventilation. In 11 ORs, 8 anesthesia machines were located to administer nitrous-oxide mixed with oxygen. Engineering controls in the OR included general dilution ventilation and local exhaust ventilation (scavenging) of the waste anesthetic gases. The authors conclude that the control measures for EtO sterilization are inadequate since dilution ventilation produces low velocity air movement insufficient to reduce EtO concentrations at the sterilizer release point. The waste scavenging system, coupled with work practices, are adequate to prevent waste anesthetic exposure in the ORs. Of particular note is the use of low flow anesthesia, which improves the effectiveness of gas scavenging.
Keywords
NIOSH-Author; NIOSH-Survey; Field-Study; Ventilation; Hospital-equipment; Employee-exposure; Laboratory-workers; Region-8; CT-143-15a; Worker-health; Equipment-design;
CAS No.
75-21-8;
Publication Date
19830401
Document Type
Field Studies; Control Technology
Fiscal Year
1983
NTIS Accession No.
PB84-146935
NTIS Price
A03
Identifying No.
CT-143-15a
NIOSH Division
DPSE;
SIC Code
8062;
Source Name
Division of Physical Sciences and Engineering, NIOSH, Cincinnati, Ohio, 23 pages, 11 references
State
CO; OH;
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