ForewordThe Joint Subcommittee of American National Standards Committees N13 and N42@ which was responsible for the development of this standard@ was established by authority of the Chairmen of American National Standards Committees N13 and N42 to represent the interests of the respective parent committees. The Joint Subcommittee comprises 50 percent manufacturer and 50 percent user membership; thus this standard includes the additional feature of incorporating the experience of both the manufacturer and the user. The American National Standards Committee on Radiation Protection@ N13@ which@ together with the American National Standards Committee on Instrumentation@ N42@ reviewed and approved this standard@ had the following membership at the time of approval: M. E. Wrenn@ Chair James E. Sohngen@ Secretary Organization Represented Name of Representative American Chemical SocietyIra B. Whitney American Conference of Governmental IndustrialHygienistsD.E. Van Farrowe American Industrial Hygiene Association H. Wilbur Speicher American Insurance AssociationKarl H. Carlson American Mutual Insurance AllianceWilliam J. Uber American Nuclear SocietyJames E. McLaughlin American Public Health AssociationSimon Kinsman Gerald S. Parker (Alt) American Society for Testing and MaterialsL B. Gardner J. H. Bystrom (Alt) A. N.Tschaeche (Alt) American Society of Mechanical Engineers H.J. Larson Association of State and Territorial Health OfficersSherwood Davies Atomic Industrial Forum James E. Sohngen Electric Light and Power GroupMarvin Sullivan Gordon A. Olson (Alt) Environmental Protection Agency David S@ Smith Health Physics SocietyL. J. Cherubin John J. Ferry (Alt) Industrial Medical AssociationWilliam Doran@ Jr Institute of Electrical and Electronics EngineersD.G. Pitcher Institute of Nuclear Materials Management Ken Okolowitz Robert Budd (Alt) International Association of Governmental Labor Officials? Jacqueline Messite Phillip M. Bourland (Alt) International Brotherhood of Electrical WorkersPaul R. Shoop Manufacturing Chemists Association@ IncP.W. McDaniel Paul Estey (Alt) National Bureau of StandardsThomas P. Loftus Thomas Hobbs (Alt) National Safety CouncilHugh F. Henry Julian B. Olishifski (Alt) Harry Rapp (Alt) Uranium Operators AssociationL.W. Swent R. T. Zitting (Alt) US Atomic Energy CommissionEdward J. Vallario Walter Cool (Alt) US Bureau of LaborJohn P. O'NeillUS Public Health ServiceRichard F. Boggs Roger G. Bostrom (Alt) Individual MembersWilliam O. Chatfield Donald C@ Fleckenstein Duncan A. Holaday Remus G. McAllister The American National Standards Committee on Instrumentation@ N42@ had the following membership at the time of approval: L. Costrell@ Chair D.C. Cook@ Secretary American Chemical Society L.P. Remsberg@ Jr American Conference of Governmental Industrial HygienistsJ. Lieberman American Industrial Hygiene Association (Vacant) American Nuclear Society (Vacant) American Society of Mechanical EngineersR.C. Austin American Society of Safety Engineers (Vacant) American Society for Testing and MaterialsJ.L. Kuranz J. A. Dwyer (Alt) Atomic Industrial Forum W.J. Lepeska Health Physics SocietyJ.B.H. Kuper R. L. Butenhoff (Alt) Institute of Electrical and Electronics Engineers L. Costrell L. H. Horn L. Kornblith J. J. Loving J. Forster (Alt) Instrument Society of America (Vacant) SEDEC Electron Tube Council (Vacant) Manufacturing Chemists AssociationM.C. Mason National Electrical Manufacturers AssociationJ.F. Connelly Oak Ridge National Laboratory F. Manning Scientific Apparatus Makers AssociationW.H. Howe Underwriters' LaboratoriesL.H. Horn R. E. Dufour (Alt) US Atomic Energy Commission Division of Biology and MedicineH.R. Wasson Division of Reactor Development and TechnologyC. Povet US Department of the Army Materiel CommandA.E. Cohen Office of Secretary of Army Office of Civil DefenseC.R. Siebentritt@ Jr US Department of Commerce National Bureau of StandardsL. Costrell US Department of Health@ Education@ and Welfare ?? Public Health Service H.J.L. Rechen R. Peterson (Alt) US Naval Research Laboratory D. C@ Cook Members-at-LargeO.W. Bilharz S. H. Hanauer W. C. Lipinski R. F. Shea E. J. Vallario The Joint Subcommittee N13/42@ which was responsible for developing this standard@ had the following membership at the time of approval: Edward J. Vallario@ Cochairman (N13) Joseph Bellian@ Cochairman (N42) E. Bemis V. T. Chilson A. Cohen John Dempsey E. E. Goodale J. D. Henderson R. L. Kathren W. R. Klein T. P. Loftus H. W. Patterson H. J. L. Rechen C. R. Siebentritt. Jr H. R. Wasson The drafting committee@ Task Group B@ had the following membership at the time of approval: J. G. Bellian V. T. Chilson (consultant) A. Cohen J. D. Henderson A. P. Hull (consultant) R. L. Kathren L. R. Kueberth (consultant) J. M. Selby E. J. VallarioScopeThis standard provides recommendations for the selection of instrumentation specific to the continuous monitoring and quantification of radioactivity in effluents released to the environment. The effluent streams considered may contain radioactive gases@ liquids@ particulates@ or dissolved solids singly or in combination. This standard specifies detection capabilities@ physical and operating limits@ reliability@ and calibration requirements and sets forth minimum performance requirements for effluent monitoring instrumentation. Unless otherwise specified@ the criteria herein refer to the total system. This standard applies only to monitoring during routine operation that includes abnormal releases. Emergency situations@ where additional performance capability will be required@ are a matter of separate consideration. Also outside the scope of this standard are sample extraction and laboratory analyses@ normally used for intercomparison between monitor calibrations and laboratory analyses@ and other applications for continuous monitoring instrumentation such as environmental monitoring or process control. Sampling techniques are covered in ANSI N13.1-1969@ Guide to Sampling Airborne Radioactive Materials in Nuclear Facilities.