DEPARTMENT OF ENERGY
10 CFR Part 835
[Docket No. HS-RM-09-835]
Occupational Radiation Protection; Correction
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