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Control technology feasibility study of the use of engineering controls in hospitals, preliminary survey report of Veteran's Administration Medical Center, Cincinnati, Ohio.

Authors
Spottswood-SE; Kercher-SL; Burroughs-GE
Source
NIOSH 1983 Sep; :1-31
NIOSHTIC No.
00130202
Abstract
A preliminary survey of sterilization and anesthetic gas administration operations was conducted at the Veteran's Administration Medical Center, (SIC-8062), Cincinnati, Ohio on September 29, 1982. Gas sterilization procedures employed ethylene- oxide (75218) (EtO) to decontaminate medical supplies and equipment. Aeration of supplies and materials after sterilization was performed to eliminate hazardous residual quantities of EtO and its reaction products, ethylene-glycol (107211) and ethylene- chlorohydrin (107073). The principal engineering controls used were isolation, general dilution ventilation, and preventive equipment maintenance procedures. During the sterilization exhaust cycle, EtO concentrations ranged from 0 to 18 parts per million (ppm). The OSHA recommended limit is 50ppm. Since the greatest potential for exposure to EtO was during the exhaust cycle, special practices were developed to limit exposure. Engineering controls in the operating room included general dilution ventilation and local exhaust ventilation of the waste anesthetic gases. Ambient nitrous-oxide (10024972) concentrations ranged from about 5 to 300ppm, with a mean breathing zone concentration of 35ppm. It was concluded that EtO concentrations could be further reduced by using a local exhaust hood at the drain area of the exhaust cycle. While the anesthetic gas scavenging equipment was effectively employed, anesthesia equipment should be periodically checked for leaks.
Keywords
NIOSH-Author; NIOSH-Survey; CT-143-12a; Region-5; Ventilation; Field-Study; Hospital-equipment; Employee-exposure; Laboratory-workers; Worker-health; Equipment-design
CAS No.
75-21-8; 107-21-1; 107-07-3; 10024-97-2
Publication Date
19830901
Document Type
Field Studies; Control Technology
Fiscal Year
1983
NTIS Accession No.
PB84-145465
NTIS Price
A04
Identifying No.
CT-143-12a
NIOSH Division
DPSE
SIC Code
8062
Source Name
National Institute for Occupational Safety and Health
State
OH
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