HIGH RADIATION AREA

(2) Each high radiation area shall be equipped with a control device which shall either cause the level of radiation to be reduced below that at which an individual might receive a dose of 100 millirem in one hour upon entry into the area or shall energize a conspicuous visible or audible alarm signal in such a manner that the individual entering and the employer or a supervisor of the activity are made aware of the entry. In the case of a high radiation area established for a period of 30 days or less, such control device is not required.

(d) Airborne radioactivity areas. (1) As used in the regulations in this part, "airborne radioactivity area" means (i) any room, enclosure, or operating area in which airborne radioactive materials, composed wholly or partly of radioactive material, exist in concentrations in excess of the amounts specified in Column 1 of § 50-204.307; or any room, enclosure, or operating area in which airborne radioactive material exists in concentrations which, averaged over the number of hours in any week during which individuals are in the area, exceed 25 percent of the amounts specified in Column 1 of § 50-204.307.

(2) Each airborne radioactivity area shall be conspicuously posted with a sign or signs bearing the radiation caution symbol and the words:

CAUTION 2

AIRBORNE RADIOACTIVITY AREA

(e) Additional requirements. (1) Each area or room in which radioactive material is used or stored and which contains any radioactive material (other than natural uranium or thorium) in any amount exceeding 10 times the quantity

2 Or "Danger."

of such material specified in paragraph (g) of this section shall be conspicuously posted with a sign or signs bearing the radiation caution symbol and the words: CAUTION 2

RADIOACTIVE MATERIAL(S)

(2) Each area or room in which natural uranium or thorium is used or stored in an amount exceeding one hundred times the quantity specified in paragraph (g) of this section shall be conspicuously posted with a sign or signs bearing the radiation caution symbol and the words:

CAUTION 2

RADIOACTIVE MATERIAL (S)

(f) Containers. (1) Each container in which is transported, stored, or used a quantity of any radioactive material other than natural uranium or thorium) greater than the quantity of such material specified in paragraph (g) of this section shall bear a durable, clearly visible label bearing the radiation caution symbol and the words:

CAUTION 2

RADIOACTIVE MATERIAL

(2) Each container in which natural uranium or thorium is transported, stored or used in a quantity greater than ten times the quantity specified in paragraph (g) of this section shall bear a durable, clearly visable label bearing the radiation caution symbol and the words:

CAUTION 2

RADIOACTIVE MATERIAL

(3) Notwithstanding the provisions of subparagraphs (1) and (2) of this paragraph a label shall not be required:

(i) If the concentration of the material in the container does not exceed that specified in § 50-204.307, Column 2 of this part, or

(ii) For laboratory containers, such as beakers, flasks, and test tubes, used transiently in laboratory procedures, when the user is present.

(4) Where containers are used for storage, the labels required in this paragraph shall state also the quantities and kinds of radioactive materials in the containers and the date of measurement of the quantities.

2 Or "Danger".

Determine, for each isotope in the combination, the ratio between the quantity present in the combination and the limit otherwise established for the specific isotope when not in combination. The sum of such ratios for all the isotopes in the combination may not exceed "1" (i.e., “unity”).

[29 F.R. 1442, Jan. 29, 1964]

§ 50-204.310 Exceptions from posting requirements.

Notwithstanding the provisions of § 50-204.309:

(a) A room or area is not required to be posted with a caution sign because of the presence of a sealed source provided the radition level twelve inches from the surface of the source container or housing does not exceed five millirem per hour.

(b) Rooms or other areas in on site medical facilities are not required to be posted with caution signs because of the presence of patients containing radioactive material provided that there are personnel in attendance who shall take the precautions necessary to prevent the exposure of any individual to radiation or radioactive material in excess of the limits established in the regulations in this part.

(c) Caution signs are not required to be posted at areas or rooms containing radioactive materials for periods of less than eight hours provided that (1) the materials are constantly attended during such periods by an individual who shall take the precautions necessary to prevent the exposure of any individual to radiation or radioactive materials in excess of the limits established in the regulations in this part; and (2) such area or room is subject to the employer's control.

[29 F.R. 1443, Jan. 29, 1964]

§ 50-204.311

Exemptions for radioactive materials packaged for shipment. Radioactive materials packaged and labeled in accordance with regulations of the Interstate Commerce Commission shall be exempt from the labeling and posting requirements of § 50-204.309 during shipment, provided that the inside containers are labeled in accordance with the provisions of § 50-204.309. [29 F.R. 1443, Jan. 29, 1964]

§ 50-204.312 Instruction of personnel; posting.

Employers regulated by the AEC shall be governed by § 20.206 (10 CFR Part 20)

standards. Employers in a State named in § 50-204.320 (c) of this part shall be governed by the requirements of the laws and regulations of that State. All other employers shall be regulated by the following:

(a) All individuals working in or frequenting any portion of a radiation area shall be informed of the occurance of radioactive materials or of radiation in such portions of the radiation area; shall be instructed in the safety problems associated with exposure to such materials or radiation and in precautions or devices to minimize exposure; shall be instructed in the applicable provisions of these radiation health and safety regulations for the protection of employees from exposure to radiation or radioactive materials; and shall be advised of reports or radiation exposure which employees may request pursuant to these regulations.

(b) Each employer, shall post a current copy of the regulations of this part and a copy of the operating procedures applicable to the work under contract conspicuously in such locations as to ensure that employees working in or frequenting radiation areas will observe these documents on the way to and from their place of employments, or shall keep such documents available for examination of employees upon request.

[29 F.R. 1443, Jan. 29, 1964, as amended at 31 F.R. 1075, Jan. 27, 1966]

§ 50-204.313 Storage of radioactive materials.

Radioactive materials stored in a nonradiation area shall be secured against unauthorized removal from the place of storage.

[31 F.R. 1075, Jan. 27, 1966]

§ 50-204.314 Waste disposal.

No employer shall dispose of radioactive material except by transfer to an authorized recipient, or in a manner approved by the Atomic Energy Commission or a State named in § 50-204-320 (c). [31 F.R. 1075, Jan. 27, 1966]

§ 50-204.315 Notification of incidents.

(a) Immediate notification. Each employer shall immediately notify the Regional Director of the appropriate Bureau of Labor Standards' Regional Office, U.S. Department of Labor for employees not protected by AEC by means of 10 CFR Part 20, or the requirements of the laws and regulations of States named in

§ 50-204.320 (c), by telephone or telegraph of any incident involving radiation which may have caused or threatens to cause:

(1) Exposure of the whole body of any individual to 25 rems or more of radiation; exposure of the skin of the whole body of any individual of 150 rems or more of radiation; or exposure of the feet, ankles, hands, or forearms of any individual to 375 rems or more of radiation; or

(2) A loss of 1 working week or more of the operation of any facilities affected;

or

(3) Damage to property in excess of $100,000.

(b) Twenty-four hour notification. Each employer shall within 24 hours notify the Regional Director of the appropriate Bureau of Labor Standards' Regional Office, U.S. Department of Labor, for employees not protected by AEC by means of 10 CFR Part 20 or the requirements of the laws and applicable regulations of States named in § 50-204.320 (c), by telephone or telegraph of any incident involving radiation which may have caused or threatens to cause:

(1) Exposure of the whole body of any individual to 5 rems or more of radiation; exposure of the skin of the whole body of any individual to 30 rems or more of radiation; or exposure of the feet, ankles, hands, or forearms to 75 rems or more of radiation; or

(2) A loss of 1 day or more of the operation of any facilities affected; or

(3) Damage to property in excess of $1,000.

(41 U.S.C. 40; 5 U.S.C. 556) [32 F.R. 7704, May 26, 1967]

§ 50-204.316 Reports of overexposure and excessive levels and concentrations.

(a) In addition to any notification required by § 50-204.315 each employer shall make a report in writing within 30 days to the Regional Director of the appropriate Bureau of Labor Standards' Regional Office, U.S. Department of Labor, for employees not protected by AEC by means of 10 CFR Part 20 or the requirements of the laws and regulations of States named in § 50-204.320 (c), of each exposure of an individual to radiation or concentrations of radioactive material in excess of any applicable limit in this part. Each report required under this paragraph shall describe the extent of exposure of persons to radiation or to

radioactive material; levels of radiation and concentrations of radioactive material involved, the cause of the exposure, levels of concentrations; and corrective steps taken or planned to assure against

a recurrence.

(b) In any case where an employer is required pursuant to the provisions of this section to report to the Bureau of Labor Standards, U.S. Department of Labor any exposure of an individual to radiation or to concentrations of radioactive material, the employer shall also notify such individual of the nature and extent of exposure. Such notice shall be in writing and shall contain the following statement:

This report is furnished to you under the provisions of 41 CFR Part 50-204, U.S. Department of Labor, Bureau of Labor Standards. You should preserve this report for future reference.

(41 U.S.C. 40; 5 U.S.C. 556) [32 F.R. 7704, May 26, 1967]

(a) Every employer shall maintain records of the radiation exposure of all employees for whom personnel monitoring is required under § 50-204.308(a) and advise each of his employees of his individual exposure on at least an annual basis.

(b) Every employer shall maintain records in the same units used in the table in § 50-204.306 and § 50-204.307 showing the results of surveys required by § 50-204.308(b).

[28 F.R. 8211, Aug. 9, 1963. Redesignated at 29 F.R. 1442, Jan. 29, 1964]

§ 50-204.318 Disclosure to former employee of individual employee's

record.

(a) At the request of a former employee each employer shall furnish to the former employee a report of the former employee's exposure to radiation as shown in records maintained by the employer, pursuant to § 50-204.317(a). Such report shall be furnished within 30 days from the time the request is made; shall cover each calendar quarter of the individual's employment involving exposure to radiation, or such lesser period as may be requested by the employee. The report shall also include the results of any calculations and analysis of radioactive material deposited in the body of the employee. The report shall be in

writing and contain the following statement:

This report is furnished to you under the provisions of the U.S. Department of Labor, Wage and Hour and Public Contracts Divisions, Radiation Safety and Health Standards (41 CFR Part 50-204). You should preserve this report for future reference.

(b) The former employee's request should include appropriate identifying data, such as social security number and dates and locations of employment. [29 F.R. 1444, Jan. 29, 1964]

§ 50-204.319 Application for variations. (a) In accordance with the policy expressed in the Federal Radiation Council's memorandum concerning radiation protection guidance for Federal agencies (25 F.R. 4402), the Director, Bureau of Labor Standards, may from time to time grant permission to employers to vary from the limitations contained in §§ 50-204.306 and 50-204.307 when the extent of variation is clearly specified and it is demonstrated to his satisfaction that (1) such variation is necessary to obtain a beneficial use of radiation or atomic energy, (2) such benefit is of sufficient value to warrant the variation, (3) employees will not be exposed to an undue hazard. and (4) appropriate action will be taken to protect the health and safety of such employees.

(b) Applications for such variations should be filed with the Director, Bureau of Labor Standards, U.S. Department of Labor, 14th Street and Constitution Avenue NW., Washington, D.C. 20210. (41 U.S.C. 40; 5 U.S.C. 556) May 26, 1967]

[32 F.R. 7704,

§ 50-204.320 AEF licensees; AEC contractors operating AEC plants and facilities; AEC-agreement State licensees or registrants.

(a) Any employer who possesses or uses source material, byproduct material, or special nuclear material, as defined in the Atomic Energy Act of 1954, as amended, under a license issued by the Atomic Energy Commission and in accordance with the requirements of Part 20, Chapter 1, Title 10, Code of Federal Regulations, shall be deemed to be in compliance with the requirements of this part with respect to such possession and

use.

(b) AEC contractors operating AEC plants and facilities. Any employer who possesses or uses source material, by

product material, special nuclear material, or other radiation sources under a contract with the Atomic Energy Commission for the operation of AEC plants and facilities and in accordance with the standards, procedures, and other requirements for radiation protection established by the Commission for such contract pursuant to the Atomic Energy Act of 1954 as amended (42 U.S.C. 2011 et seq.), shall be deemed to be in compliance with the requirements of this part with respect to such possession and

use.

(c) AEC-agreement State licensees or registrants. (1) Atomic Energy Act sources. Any employer who possesses or uses source material, byproduct material, or special nuclear material, as defined in the Atomic Energy Act of 1954, as amended (42 U.S.C. 2011 et seq.), and has either registered such sources with, or is operating under a license issued by, a State which has an agreement in effect with the Atomic Energy Commission pursuant to section 274(b) (42 U.S.C. 2021(b)) of the Atomic Energy Act of 1954, as amended, and in accordance with the requirements of that State's laws and regulations shall be deemed to be in compliance with the radiation requirements of this part, insofar as his possession and use of such material is concerned, unless the Secretary of Labor, after conference with the Atomic Energy Commission, shall determine that the State's program for control of these radiation sources is incompatible with the requirements of this part. Such agreements currently are in effect only in the States of Alabama, Arkansas, California, Kansas, Kentucky, Florida, Mississippi, New Hampshire, New York, North Carolina, Texas, Tennessee, and Oregon.

(2) Other sources. Any employer who possesses or uses radiation sources other than source material, byproduct material, or special nuclear material, as defined in the Atomic Energy Act of 1954, as amended (42 U.S.C. 2011 et seq.), and has either registered such sources with, or is operating under a license issued by, a State which has an agreement in effect with the Atomic Energy Commission pursuant to section 274(b) (42 U.S.C. 2021(b)) of the Atomic Energy Act of 1954, as amended, and in accordance with the requirements of that State's laws and regulations shall be deemed to be in compliance with the radiation re

quirements of this part, insofar as his possession and use of such material is concerned, provided the State's program for control of these radiation sources is the subject of a currently effective determination by the Secretary of Labor that such program is compatible with the requirements of this part. Such determinations currently are in effect only in the States of Alabama, Arkansas, California, Kansas, Kentucky, Florida, Mississippi, New Hampshire, New York, North Carolina, Texas, Tennessee, and Oregon.

[29 F.R. 1444, Jan. 29, 1964, as amended at 29 F.R. 6091, May 8, 1964; 31 F.R. 1075, Jan. 27, 1966; 32 F.R. 5835, Apr. 12, 1967] § 50-204.321

mining.

Radiation standards for

(a) For the purpose of this section, a "working level" is defined as any combination of radon daughters in 1 liter of air which will result in the ultimate emission of 1.3 x 105 million electron volts of potential alpha energy. The numerical value of the "working level" is derived from the alpha energy released by the total decay of short-lived radon daughter products in equilibrium with 100 pico-curies of radon 222 per liter of air. A working level month is defined as the exposure received by a worker breathing air at one working level concentration for 43 weeks of 40 hours each.

(b) (1) Occupational exposure to radon daughters in mines shall be controlled so that no individual will receive an exposure of more than 2 working level months in any consecutive 3-month period and no more than 4 working level months in any consecutive 12-month period. Actual exposures shall be kept as far below these values as practicable.

(2) In enforcing this section, the Director of the Bureau of Labor Standards may at any stage approve variations in individual cases from the limitation set forth in subparagraph (1) of this paragraph to comply with the requirements of the Act upon a showing to the satisfaction of the Director by an employer having a mine with conditions resulting in an exposure of more than 4 working level months but not more than 12 working level months in any 12 consecutive months that (i) under the particular facts and circumstances involved the working conditions of the employees so exposed are such that their health and safety are protected, and (ii) the em