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CAUTION 2

$ 50-204.26 Exemptions for radioactive RADIOACTIVE MATERIALS

materials packaged for shipment. (3) Notwithstanding the provisions Radioactive materials packaged and of paragraphs (f) (1) and (2) of this labeled in accordance with regulations section a label shall not be required: of the Department of Transportation

(i) If the concentration of the mate- shall be exempt from the labeling and rial in the container does not exceed posting requirements during shipthat specified in column 2 of the de ment, provided that the inside conscribed Table 1, or

tainers are labeled in accordance with (ii) For laboratory containers, such the provisions of $ 50-204.24. as beakers, flasks, and tests tubes, used transiently in laboratory proce: $ 50–204.27 Instruction of personnel postdures, when the user is present.

(4) Where containers are used for Employers regulated by the AEC storage, the labels required in this shall be governed by "$ 20.206” (10 paragraph shall state also the quanti- CFR Part 20) standards. Employers in ties and kinds of radioactive materials a State named in § 50-204.34(c) shall in the containers and the date of mea be governed by the requirements of surement of the quantities.

the laws and regulations of that State. $ 50–204.25 Exceptions from

All other employers shall be regulated posting re

by the following: quirements.

(a) All individuals working in or freNotwithstanding the provisions of quenting any portion of a radiation $ 50-204.24:

area shall be informed of the occur(a) A room or area is not required to rence of radioactive materials or of rabe posted with a caution sign because diation in such portions of the radiof the presence of a sealed source, pro- ation area; shall be instructed in the vided the radiation level 12 inches safety problems associated with expofrom the surface of the source con- sure to such materials or radiation and tainer or housing does not exceed 5 in precautions or devices to minimize millirem per hour.

exposure; shall be instructed in the ap(b) Rooms or other areas in on-site plicable provisions of this subpart for medical facilities are not required to the protection of employees from exbe posted with caution signs because posure to radiation or radioactive maof the presence of patients containing

terials; and shall be advised of reports radioactive material, provided that

of radiation exposure which employ. there are personnel in attendance who

ees may request pursuant to the regushall take the precautions necessary to

lations in this part. prevent the exposure of any individual

(b) Each employer to whom this subto radiation or radioactive material in part applies shall post a current copy excess of the limits established in the

of its provisions and a copy of the opprovisions of this subpart.

erating procedures applicable to the (c) Caution signs are not required to

work under contract conspicuously in

such locations as to ensure that embe posted at areas or rooms containing radioactive materials for periods of

ployees working in or frequenting raless than 8 hours: Provided, That (1)

diation areas will observe these docuthe materials are constantly attended

ments on the way to and from their during such periods by an individual

place of employment, or shall keep

such documents available for examinawho shall take the precautions necessary to prevent the exposure of any in

tion of employees upon request. dividual to radiation or radioactive

$ 50–204.28 Storage of radioactive materi. materials in excess of the limits estab

als. lished in the provisions of this subpart; and (2) such area or room is sub

Radioactive materials stored in a ject to the employer's control.

nonradiation area shall be secured

against unauthorized removal from 2 Or “Danger”.

the place of storage.

$ 50-204.29 Waste disposal.

may have caused or threatens to

cause: No employer shall dispose of radio

(1) Exposure of the whole body of active material except by transfer to

any individual to 5 rems or more of raan authorized recipient, or in a

diation; exposure of the skin of the manner approved by the Atomic

whole body of any individual to 30 Energy Commission or a State named

rems or more of radiation; or exposure in $ 50-204.34(c).

of the feet, ankles, hands, or forearms

to 75 rems or more of radiation; or $ 50–204.30 Notification of incidents.

(2) A loss of 1 day or more of the op(a) Immediate notification. Each eration of any facilities; or employer shall immediately notify the (3) Damage to property in excess of Regional Director of the appropriate $10,000. Wage and Labor Standards Administration, Office of Occupational Safety $ 50–204.31 Reports of overexposure and of the Bureau of Labor Standards of excessive levels and concentrations. the U.S. Department of Labor, for em (a) In addition to any notification reployees not protected by AEC by quired by $ 50-204.30 each employer means of 10 CFR Part 20, § 50 shall make a report in writing within

204.34(b) of this part, or the require 30 days to the Regional Director of ments of the laws and regulations of the appropriate Wage and Labor States named in $ 50-204.34(c), by tele Standards Administration, Office of phone or telegraph of any incident in Occupational Safety of the Bureau of volving radiation which may have Labor Standards of the U.S. Departcaused or threatens to cause:

ment of Labor, for employees not pro(1) Exposure of the whole body of tected by AEC by means of 10 CFR any individual to 25 rems or more of Part 20, or under $ 50-204.34(b) of this radiation; exposure of the skin of the part, or the requirements of the laws whole body of any individual to 150 and regulations of States named in rems or more of radiation; or exposure $ 50-204.34(c), of each exposure of an of the feet, ankles, hands, or forearms individual to radiation or concentraof any individual to 375 rems or more tions of radioactive material in excess of radiation; or

of any applicable limit in this subpart. (2) The release of radioactive materi Each report required under this paraal in concentrations which, if averaged graph shall describe the extent of exover a period of 24 hours, would posure of persons to radiation or to raexceed 5,000 times the limit specified dioactive material; levels of radiation for such materials in Table II of Ap- and concentrations of radioactive mapendix B to 10 CFR Part 20.

terial involved, the cause of the expo(3) A loss of 1 working week or more sure, levels of concentrations; and corof the operation of any facilities af- rective steps taken or planned to fected; or

assure against a recurrence. (4) Damage to property in excess of (b) In any case where an employer is $100,000.

required pursuant to the provisions of (b) Twenty-four hour notification. this section to report to the U.S. DeEach employer shall within 24 hours partment of Labor any exposure of an following its occurrence notify the Re- individual to radiation or to concentragional Director of the appropriate tions of radioactive material, the emWage and Labor Standards Adminis- ployer shall also notify such individual tration, Office of Occupational Safety of the nature and extent of exposure. of the Bureau of Labor Standards of Such notice shall be in writing and the U.S. Department of Labor, for em shall contain the following statement: ployees not protected by AEC by “You should preserve this report for means of 10 CFR Part 20, $ 50- future reference." 204.34(b) of this part, or the requirements of the laws and applicable regu- $ 50–204.32 Records. lations of States named in $ 50 (a) Every employer shall maintain 204.34(c), by telephone or telegraph of records of the radiation exposure of any incident involving radiation which all employees for whom personnel monitoring is required under $ 50- cordance with the standards, proce204.23 and advise each of his employ. dures, and other requirements for raees of his individual exposure on at diation protection established by the least an annual basis.

Commission for such contract pursu(b) Every employer shall maintain ant to the Atomic Energy Act of 1954 records in the same units used in as amended (42 U.S.C. 2011 et seq.), tables in $ 50-204.21 and Appendix B shall be deemed to be in compliance to 10 CFR Part 20.

with the requirements of this subpart

with respect to such possession and 8 50–204.33 Disclosure to former employee

use. of individual employee's record.

(c) AEC-agreement State licensees or (a) At the request of a former em registrants: ployee an employer shall furnish to (1) Atomic Energy Act Sources. Any the employee a report of the employ- employer who possesses or uses source ee's exposure to radiation as shown in material, byproduct material, or sperecords maintained by the employer cial nuclear material, as defined in the pursuant to $ 50-204.32(a). Such report Atomic Energy Act of 1954, as amendshall be furnished within 30 days from ed (42 U.S.C. 2011 et seq.), and has the time the request is made, and shall either registered such sources with, or cover each calendar quarter of the in- is operating under a license issued by, dividual's employment involving expo- a State which has an agreement in sure to radiation or such lesser period effect with the Atomic Energy Comas may be requested by the employee. mission pursuant to section 274(b) (42 The report shall also include the re U.S.C. 2021(b)) of the Atomic Energy sults of any calculations and analysis Act of 1954, as amended, and in acof radioactive material deposited in cordance with the requirements of the body of the employee. The report that State's laws and regulations shall shall be in writing and contain the fol- be deemed to be in compliance with lowing statement: “You should pre- the radiation requirements of this serve this report for future reference.” part, insofar as his possession and use

(b) The former employee's request of such material is concerned, unless should include appropriate identifying the Secretary of Labor, after conferdata, such as social security number ence with the Atomic Energy Commisand dates and locations of employ sion, shall determine that the State's ment.

program for control of these radiation

sources is incompatible with the re$ 50-204.34 AEC licensees-AEC contrac

quirements of this part. Such agreetors operating AEC plants and facili.

ments currently are in effect only in ties-AEC agreement State licensees or

the States of Alabama, Arkansas, Caliregistrants.

fornia, Kansas, Kentucky, Florida, (a) Any employer who possesses or Mississippi, New Hampshire, New uses source material, byproduct mate. York, North Carolina, Texas, Tennesrial, or special nuclear material, as de- see, Oregon, Idaho, Arizona, Colorado, fined in the Atomic Energy Act of Louisiana, Nebraska, and Washington. 1954, as amended, under a license (2) Other sources. Any employer who issued by the Atomic Energy Commis- possesses or uses radiation sources sion and in accordance with the re- other than source material, byproduct quirements of 10 CFR Part 20 shall be material, or 3pecial nuclear material, deemed to be in compliance with the as defined in the Atomic Energy Act requirements of this subpart with re of 1954, as amended (42 U.S.C. 2011 et spect to such possession and use.

seq.), and has either registered such (b) AEC contractors operating AEC sources with, or is operating under a liplants and facilities: Any employer cense issued by a State which has an who possesses or uses source material, agreement in effect with the Atomic byproduct material, special nuclear Energy Commission pursuant to secmaterial, or other radiation sources tion 274(b) (42 U.S.C. 2021(b)) of the under a contract with the Atomic Atomic Energy Act of 1954, as amendEnergy Commission for the operation ed, and in accordance with the reof AEC plants and facilities and in ac- quirements of that State's laws and

regulations shall be deemed to be in um with 100 pico-curies of radon 222 compliance with the radiation require per liter of air. A working level month ments of this part, insofar as his pos- is defined as the exposure received by session and use of such material is a worker breathing air at one working concerned, provided the State's pro- level concentration for 443 weeks of 40 gram for control of these radiation hours each. sources is the subject of a currently ef (b) (1) Occupational exposure to fective determination by the Secretary radon daughters in mines shall be conof Labor that such program is com trolled so that no individual will repatible with the requirements of this ceive an exposure of more than 2 part. Such determinations currently working level months in any calendar are in effect only in the States of Ala- quarter and no more than 4 working bama, Arkansas, California, Kansas, level months in any calendar year. Kentucky, Florida, Mississippi, New Actual exposures shall be kept as far Hampshire, New York, North Caroli. below these values as practicable. na, Texas, Tennessee, Oregon, Idaho, (2) In enforcing this section, the DiArizona, Colorado, Louisiana, Nebras- rector of the Bureau of Labor Standka, and Washington.

ards may at any stage approve vari

ations in individual cases from the lim$ 50–204.35 Application for variations

itation set forth in paragraph (b)(1) of from radiation levels.

this section to comply with the re(a) In accordance with policy ex quirements of the Act upon a showing pressed in the Federal Radiation to the satisfaction of the Director by Council's memorandum concerning ra- an employer having a mine with condidiation protection guidance for Feder- tions resulting in an exposure of more al agencies (25 FR 4402), the Director, than 4 working level months but not Bureau of Labor Standards may from more than 12 working level months in time to time grant permission to em- any 12 consecutive months that (i) ployers to vary from the limitations under the particular facts and circumcontained in $ $ 50-204.21 and 50-204.22 stances involved the working condiwhen the extent of variation is clearly tions of the employees so exposed are specified and it is demonstrated to his such that their health and safety are satisfaction that (1) such variation is protected, and (ii) the employer has a necessary to obtain a beneficial use of bona fide plan to reduce the levels of radiation or atomic energy, (2) such exposure to those specified in parabenefit is of sufficient value to war- graph (b)(1) of this section as soon as rant the variation, (3) employees will practicable, but in no event later than not be exposed to an undue hazard, January 1, 1971. and (4) appropriate actions will be (3) Whenever a variation under taken to protect the health and safety paragraph (b)(2) of this section is of such employees.

sought, a request therefor should be (b) Applications for such variations submitted in writing to the Director of should be filed with the Director, the Bureau of Labor Standards, U.S. Bureau of Labor Standards, U.S. De- Department of Labor, Washington, partment of Labor, Washington, D.C. D.C. 20210, within 90 days following 20210.

the end of the calendar quarter or

year, as the case may be. $ 50-204.36 Radiation standards for

(c) (1) For uranium mines, records of mining.

environmental concentrations in the (a) For the purpose of this section, a occupied parts of the mine, and of the “working level” is defined as any com- time spent in each area by each person bination of radon daughters in 1 liter involved in underground work shall be of air which will result in the ultimate established and maintained. These recemission of 1.3 x 105 million electron ords shall be in sufficient detail to volts of potential alpha energy. The permit calculations of the exposures, numerical value of the "working level” in units of working level months, of is derived from the alpha energy re- the individuals and shall be available leased by the total decay of short-lived for inspection by the Secretary of radon daughter products in equilibri. Labor or his authorized agents.

(2) For other than uranium mines (b) To achieve compliance with paraand for surface workers in all mines, graph (a) of this section, feasible adparagraph (c)(1) of this section will be ministrative or engineering controls applicable: Provided, however, That if must first be determined and impleno environmental sample shows a con- mented in all cases. In cases where centration greater than 0.33 working protective equipment in addition to level in any occupied part of the mine, other measures is used as the method the maintenance of individual occu of protecting the employee, such propancy records and the calculation of tection must be approved for each speindividual exposures will not be re cific application by a competent indusquired.

trial hygienist or other technically (d) (1) At the request of an employee qualified source. (or former employee) a report of the employee's exposure to radiation as

TABLE 11—MINERAL DUSTS shown in records maintained by the employer pursuant to paragraph (c) of

Substance

Mppcte Mg/m3 this section, shall be furnished to him. The report shall be in writing and con- Silica: tain the following statement:

Crystalline:
Quartz (respirable).. ........

250' 10mg/M3m This report is furnished to you under the provisions of the U.S. Department of Labor,

%SiO2 +5 % SiO2+2

Quartz (total dust) ..... Radiation Safety and Health Standards (41

30mg/M3 CFR 50-204.36). You should preserve this

%SIO2+2 report for future reference.

Cristobalite: Use 1/2 the value

calculated from the count or (2) The former employee's request mass formulae for quartz. should include appropriate identifying Tridymite: Use 1/2 the value data, such as social security number

calculated from the formulae

for quartz. and dates and locations of employ

Amorphous, including natural ment.

diatomaceous earth

20 80mg/M3

.......

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Silicates (less than 1% crystalline
silica):

Mica ...
Soapstone ........
Talc

Portland cement...
Graphite (natural).
Coat dust (respirable fraction less

than 5% SiO)...

2.4mg/M?

or 10mg/M3

For more than 5% Sio,....

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8 50–204.50 Gases, vapors, fumes, dusts,

and mists. (a) (1) Exposures by inhalation, ingestion, skin absorption, or contact to any material or substance (i) at a concentration above those specified in the “Threshold Limit Values of Airborne Contaminants for 1968” of the Ameri. can Conference of Governmental Industrial Hygienists, except for the ANSI Standards listed in Table I of this section and except for the values of mineral dusts listed in Table II of this section, and (ii) concentrations above those specified in Tables I and II of this section, shall be avoided, or protective equipment shall be provided and used.

(2) The requirements of this section do not apply to exposures to airborne asbestos dust. Exposures of employees to airborne asbestos dust shall be subject to the requirements of 29 CFR 1910.93a.

NOTE: Conversion factors-
mppctX 35.3=million particles per cubic meter
=particles per c.c.

• Millions of particles per cubic foot of air, based on impinger samples counted by light-field technics.

"The percentage of crystalline silica in the formula is the amount determined from air-borne samples, except in those instances in which other methods have been shown to be applicable.

"As determined by the membrane filter method at 430 x phase contrast magnification.

- Both concentration and percent quartz for the application of this limit are to be determined from the fraction passing a sizeselector with the following characteristics.

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