Click here to make tpub.com your Home Page

Page Title: Samples and Instrumentation
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home

   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 



DOE-STD-1128-98
Guide of Good Practices for Occupational Radiological Protection in Plutonium Facilities
be designed not only for prompt detection of airborne contamination, but to assure that
samples are representative of the air that the workers are breathing and have a low enough
limit of detection that only negligible doses could go undetected. Bioassay and in vivo
analysis of plutonium should confirm the negligible exposure that the air monitoring
program documents and provide a baseline for any accident- or incident-related exposures.
The need for an effective sampling and monitoring program is even more critical in the
rapidly changing environment of decommissioning activities.
Numerous factors enter into any determination of plutonium contamination levels and the
risk to workers. Some of these factors are detection efficiency of the measuring instrument,
collection efficiency of the smear media or air sample filter, the location of the smear or air
sample in relation to the source of contamination, the physical and chemical properties of
the contamination, the representativeness of the air sample to the air being breathed by the
worker, the engineered controls available, and the protective equipment used. All of these
factors must be considered in the development of a plutonium contamination control
program and in evaluating the actions required for personnel protection.
4.1.5 Samples and Instrumentation
For plutonium facilities, both air sampling and air monitoring are essential elements of the
radiological control program. Real-time air monitoring using alpha-sensitive continuous air
monitors (CAMs) should be used to alert workers to rapid degradation of radiological
conditions. The air sampling system with a lower limit of detection must be adequate to
provide continuing assurance that personnel exposures are within limits and ALARA.
The characteristics of a good plutonium CAM include
-- A lower limit of detection equal to or better than 8-DAC-h
-- high reliability with a minimum of spurious alarms
-- a stable and constant flow air mover
-- stable and documented detector efficiency with geometry, filter collection efficiency,
self-attenuation, etc., considered
-- methodology for radiation discrimination and natural radioactivity discrimination
-- system for activating an alarm
4-4


Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business