[Federal Register Volume 74, Number 75 (Tuesday, April 21, 2009)]
[Rules and Regulations]
[Page 18116]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: E9-9097]


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DEPARTMENT OF ENERGY

10 CFR Part 835

[Docket No. HS-RM-09-835]
RIN 1901-AA95


Occupational Radiation Protection; Correction

AGENCY: Department of Energy.

ACTION: Final rule; correcting amendments.

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SUMMARY: The Department of Energy (DOE) corrects two errors in its 
Occupational Radiation Protection regulations. One error originated in 
a final rulemaking (FR Doc. 98-27366), which was published in the 
Federal Register of Wednesday, November 4, 1998 (63 FR 59661). The 
second error originated in a final rulemaking (FR Doc. E7-10477), which 
was published in the Federal Register of Friday, June 8, 2007 (72 FR 
31903).

DATES:  Effective Date: April 21, 2009.

FOR FURTHER INFORMATION CONTACT: Judith Foulke, (301) 903-5865, e-mail: 
<a href="/cdn-cgi/l/email-protection#2c66594855026a43594047496c445d02484349024b435a"><span class="__cf_email__" data-cfemail="da90afbea3f49cb5afb6b1bf9ab2abf4beb5bff4bdb5ac">[email protected]</span></a>.

SUPPLEMENTARY INFORMATION:

Background

    DOE first published title 10, Code of Federal Regulations, part 
835, Occupational Radiation Protection (part 835), as a final rule on 
December 14, 1993. In the November 4, 1998, amendment to part 835, DOE, 
in part, revised footnote 1 to appendix D. The revised footnote 
references an exception noted in footnote 5. The exception is actually 
found in footnote 6. When DOE proposed amending part 835 on August 10, 
2006, DOE proposed correcting this error; however, in the final rule 
amending part 835 on June 8, 2007, the correction was not made. 
Accordingly, footnote 1 needs to be revised to reference the exception 
in footnote 6.
    When DOE proposed amending part 835 on August 10, 2006, DOE 
proposed revising the definition of ``absorbed dose'' to read: 
``Absorbed dose (D) means the average energy absorbed by matter from 
ionizing radiation per unit mass of irradiated material. The absorbed 
dose is expressed in units of rad (or gray) (1 rad = 0.01 gray).'' 
During the public comment period, a comment was received that the 
definition should be changed from ``energy absorbed by matter'' to 
``energy imparted.'' As noted in the preamble to the June 8, 2007, 
amendment, DOE agreed with the comment and revised the definition to 
read: ``Absorbed dose (D) means the average energy imparted by ionizing 
radiation to the matter in a volume element. The absorbed dose is 
expressed in units of rad (or gray) (1 rad = 0.01 gray).'' In making 
this revision, the phrase ``per unit mass of irradiated material'' was 
inadvertently deleted from the end of the first sentence.

Need for Corrections

    This correction revises the definition of ``absorbed dose'' and 
changes the reference to footnote 6 in footnote 1 of appendix D to part 
835.

List of Subjects in 10 CFR Part 835

    Federal buildings and facilities, Nuclear energy, Nuclear 
materials, Nuclear power plants and reactors, Nuclear safety, 
Occupational safety and health, Radiation protection, and Reporting and 
recordkeeping requirements.


0
Accordingly, 10 CFR part 835 is corrected by making the following 
correcting amendments:

PART 835--OCCUPATIONAL RADIATION PROTECTION

0
1. The authority citation for part 835 continues to read as follows:

    Authority:  42 U.S.C. 2201, 7191; 50 U.S.C. 2410.


0
2. In Sec.  835.2(b), the definition of ``absorbed dose'' is corrected 
to read as follows:


Sec.  835. 2  Definitions.

* * * * *
    (b) * * *
    Absorbed dose (D) means the average energy imparted by ionizing 
radiation to the matter in a volume element per unit mass of irradiated 
material. The absorbed dose is expressed in units of rad (or gray) (1 
rad = 0.01 gray).
* * * * *

0
3. In appendix D, footnote 1 of the table is corrected to read as 
follows:


Appendix D to Part 835--Surface Contamination Values

* * * * *
    \1\ The values in this appendix, with the exception noted in 
footnote 6 below, apply to radioactive contamination deposited on, 
but not incorporated into the interior or matrix of, the 
contaminated item. Where surface contamination by both alpha- and 
beta-gamma-emitting nuclides exists, the limits established for 
alpha- and beta-gamma-emitting nuclides apply independently.
* * * * *

    Issued in Washington, DC, on April 13, 2009.
Glenn S. Podonsky,
Chief Health, Safety and Security Officer, Office of Health, Safety and 
Security.
[FR Doc. E9-9097 Filed 4-20-09; 8:45 am]
BILLING CODE 6450-01-P


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