- @ 4102 ENE Pe dete FEDERAL RASiATION Cbetta: RADIATION PROTECTION CUIDANCE FOR FEDERAL AGENCIES SEED ALU BEY Owe - mendations for the ruidance of Federal e@ccncies in the conduct of their radiation protection activities. It is the statutory responsibility of the Council) to “* * * advise the President with respect to radiation matters, di- Scientific findings concerning the bio- or indirectly affecting health, with States’ °°” Fundamentally, setting basic rediation protection standards involves passing judgement on the extent ef the possible health hazerd society is willing to accept in order to reaucze the known benefits of radiation. I: involves inevitubly a balancing Letween total health protection, which might require forezoing any activilies insreesing exposure to rediation, and th< vizorous promotion of the use of radiction and atomic energy in order to schieve opiimum benefits. The Federal Radiation Council hes reviewed availcLie knowledec on radiation effects and consulted with scientists vithin and outsice the Government. Each member has also examined the Guidance recornmended in this memoranduwm in lish: of his statutory responsi- bilities, Althonch the guidance dses not cover all phases of radiation protection, such as internal emitters, we find that the guidance which we recommend that you provide fer the use of Federal asen- cies gives appropriate consideration to the requiremcnis of health protection and the beneficial uses of radsation and atomic energy. Our furtherfindings and recommendations follow. Discussion. The fundamental problem §n establishing radistion protection euides is to allow as much of the Leneficial uses of jonizing radiation as pose sible while assuring that man is not exposed to unduc hazard. To ect a true insight into the scope of the problem and the impact of the decisions involved, a review of the benefits and the hazards ds necessary. Itis imporfant in eonsidering both the benefits and hasards of radistion to ap- precinte that man has existed throush- out his history in a bath of natural radiation. This backsround radiation, whieh varics over the carth. provides a partial basis for understanding the effects Of radiation on man and serves as an indicator of the ranees of rachation exposures Wilhin which the human popue Yation has develoned and increased. The bencfiis of tonizing radiation. Radiation properly cantralied is a boon fo inankind. Mo has been of inestimable “value in the diacnosis and treatment of discascs, It ¢an provide suurces of ee amount of dose, it then become: pc-::. to rclate very low dote to an uss: blolorical effect even thouth it ts no: tectuble. It is penerally acres thes trace liquid flow, and for other purposes, many diverse ficlds now rank radiation ewe 9. Ifone assumes a diroet ness 3: tion between biviouical eZect anc - yet had available. In Industry, & ts used as a tool to measure thickness, quantity or qualily, to discover hiddcn flaws, to Pursuant to Uxccutive Order 10631 and Public Law 86-373, the Fedcral Radiation Council has made a study of the hazards and usc of radiation We herewith transmit our first report to you including guidance for all Federal acenejes in the formulation of radiation standards and in the establishment and execution of protrams of cocperation we enerry ereater than anv the world has So manyresearch uscs for ioniziny radia- rectly —~ 2 fAemorandsm for the President eoncerning our findings and our rccom- ee 2awses tion have been found that scientists in effect that may actually occur wit excced the amount predicted by th. assumption. Basic biological assumptions. T-are insufficien. data to provice a H-: basis for evaluating radiation efcc-- : oll types end Jevils of irradiation T7.-: With the microscope in value as a working tool. The hazards of tonizing radiation. Ionizing radiation involves health haz- ards just as do manyother useful tools. ds particular uncertainty with respec: : the biolorical efects at very lew c: logical effects of radiaticn of most imMediate interest to the establishment of radiation protection standares are the following: 1, Acute doses of rediation may profuse immediate or delayed effects, or th. 2. AS acute whole body doses increase above approximately 25 reins (units of and low-dose rates. It is not prous:: therefore to essurme that there is a of radiation expusure below which is absolute certainty that no effect inoccur. This considcration, in ecai:.: to the adoption of the conservative :: pcthesis of a linear relation bstweer.: . logical effect and the amount of c:Getermines our basic approach to :! radiation dose), immediately observable effects increase in severity with dose, formulation of radiation protec..< guides. The lack of adecauate scientific ints mation makes it urgent that edci: research be underteken and new co Geveloped to provide a firmer basis : beginning from barely detectable changcs, to biological signs clearly indicating damage, to death at levels of a few hundred rems. 3. Delaycd efiects produced either by acute irradiation or ty chronic irradia-. evaluating biolezical risk. Apprors:: tion are similar in kind, but the ability of miember agencies ef the Federa} Rac. the body to repair radiation damage is tion Council are sponsoring and enctcu usually more effective in the case of aging research in these areas. chronic than acute irradiation. Recommendacions. In view cf t! 4. The delayed effects from radiation find.ngs summarized above the follow: are in general indistinguishable from reccmmendations are made: familiar pathological conditions usually . It is recommended that: present in the population. 1. There should not be any maz-mrs 5. Delcyed effects include genetic radiation exposure without the expect effects (effects transmitted to succeeding tion of benefit resulting from such : generations), increased incidence of posure, Activities resulting in man-m~ tumors, lifespan shortening, and growth rediation exposure should be authorir and development chances. 6. The child, the infant, end the un- for useful applications provided in 1. born infant appear to be more sensitive ommendations sct forth herein « followed. to radbation than the adult. It is recommendedthat: 7. The various organs of the body differ 2. The term “RadiationPretes: in their sensitiviiy to radiation, _ 8. Although ionizing radiation can ine Guice” be adopted for Federal use. 1. duce genctic and somatic effects (effects term is defined_as_the_ radiation c¢: on the individual during his lifetime which should not be exceeded with: other than genctic effects), the evidence at the present time is insufficient to justify precise conclusions on the nature of careful considcration of the reas doing so; every effort should be misc: encourage the maintenance of revs. the dose-ciTeci relationship at low doscs and dcse rates. Moreover, the evidence doses as far below this guide. practicable, Zi is recommended that: 3. The following Radiation Proie::: Guides be adopted for normal peaceiii is insuiiicient to prove either the hypoth- esis of a “damage threshold” (a point below which no damage occurs) or the hypothesis of “no threshold" in man at lowdoses. operations: Type of e.posure Radiation warker: 4a) Whete bol, head and trmk, active blood formfag organs, ganas, of betas of ©) G, (hb) Ekin of whole body aed tnyroid.. Condition Dose (reas) Accumulated dose... 8 timesfhe numberof yeses b: AD WOCKS.. .ecenences ote! (ce) Hands and forvarms, beet and ankiee,....... ae. (A) Wane 2... ec cerenecccewcctennceccenwesecnce @) Other organs. yenr O 1 inicrorram of radium- moet pslrownical equivalent, 13 weeks. ....-.-..200-f & Population: Ga) Favten db Veral Vear.. (b) Average. phecreteencscccee weweeccnsecceencce wees W SCMcceweeee edeeces & (Wenads), 05 (whale hedy), The followins points nre made in relabon fo the Radiation ProtecWon Guides herein provided: CD For the individual in the por. tion, the basic Guide for annual wh body dose ts 0.5 rem. This Guide : DOE ARCHIVES*