11382 Federal Register / Vol. 74, No. 50 / Tuesday, March 17, 2009 / Notices 

to an existing guide in the agency’s 

‘‘Regulatory Guide’’ series. This series 

was developed to describe and make 

available to the public information such 

as methods that are acceptable to the 

NRC staff for implementing specific 

parts of the agency’s regulations, 

techniques that the staff uses in 

evaluating specific problems or 

postulated accidents, and data that the 

staff needs in its review of applications 

for permits and licenses. 

Revision 2 of Regulatory Guide 1.200, 

‘‘An Approach for Determining the 

Technical Adequacy of Probabilistic 

Risk Assessment Results for RiskInformed Activities,’’ was issued with a 

temporary identification as Draft 

Regulatory Guide, DG–1200. In 1995, 

the NRC issued a Policy Statement on 

the use of probabilistic risk analysis 

(PRA), encouraging its use in all 

regulatory matters. That Policy 

Statement states that ‘‘ * * * the use of 

PRA technology should be increased to 

the extent supported by the state-of-theart in PRA methods and data and in a 

manner that complements the NRC’s 

deterministic approach.’’ Since that 

time, many uses have been 

implemented or undertaken, including 

modification of the NRC’s reactor safety 

inspection program and initiation of 

work to modify reactor safety 

regulations. Consequently, confidence 

in the information derived from a PRA 

is an important issue, in that the 

accuracy of the technical content must 

be sufficient to justify the specific 

results and insights that are used to 

support the decision under 

consideration. 

This regulatory guide describes one 

acceptable approach for determining 

whether the technical adequacy of the 

PRA, in total or the parts that are used 

to support an application, is sufficient 

to provide confidence in the results, 

such that the PRA can be used in 

regulatory decision-making for lightwater reactors. This guidance is 

intended to be consistent with the 

NRC’s PRA Policy Statement. It is also 

intended to reflect and endorse 

guidance provided by standards-setting 

and nuclear industry organizations. 

II. Further Information 

In June 2008, DG–1200 was published 

for public comment. The public 

comment period closed on December 

31, 2008. The staff’s responses to the 

public comments that were received are 

located in the NRC’s Agencywide 

Documents Access and Management 

System (ADAMS) under Accession 

Number ML090410020. Electronic 

copies of Regulatory Guide 1.200, 

Revision 2 are available through the 

NRC’s public Web site under 

‘‘Regulatory Guides’’ at http:// 

www.nrc.gov/reading-rm/doccollections/. 

In addition, regulatory guides are 

available for inspection at the NRC’s 

Public Document Room (PDR), which is 

located at Room O–1F21, One White 

Flint North, 11555 Rockville Pike, 

Rockville, Maryland 20852–2738. The 

PDR’s mailing address is USNRC PDR, 

Washington, DC 20555–0001. The PDR 

can also be reached by telephone at 

(301) 415–4737 or (800) 397–4209, by 

fax at (301) 415–3548, and by e-mail to 

pdr.resource@nrc.gov. 

Regulatory guides are not 

copyrighted, and NRC approval is not 

required to reproduce them. 

Dated at Rockville, Maryland, this 10th day 

of March 2009. 

For the Nuclear Regulatory Commission. 

Andrea D. Valentin, 

Chief, Regulatory Guide Development Branch, 

Division of Engineering, Office of Nuclear 

Regulatory Research. 

[FR Doc. E9–5698 Filed 3–16–09; 8:45 am] 

BILLING CODE 7590–01–P 

NUCLEAR REGULATORY 

COMMISSION 

[NRC–2009–0114] 

Notice of Issuance of Regulatory Guide 

AGENCY: Nuclear Regulatory 

Commission. 

ACTION: Notice of issuance and 

availability of Regulatory Guide (RG) 

10.4, Revision 3. 

FOR FURTHER INFORMATION CONTACT: 

Mark Orr, Regulatory Guide 

Development Branch, Division of 

Engineering, Office of Nuclear 

Regulatory Research, U.S. Nuclear 

Regulatory Commission, Washington, 

DC 20555–0001, telephone (301) 251– 

7495 or e-mail to Mark.Orr@nrc.gov. 

SUPPLEMENTARY INFORMATION: 

I. Introduction 

The U.S. Nuclear Regulatory 

Commission (NRC) is issuing a revision 

to an existing guide in the agency’s 

‘‘Regulatory Guide’’ series. This series 

was developed to describe and make 

available to the public information such 

as methods that are acceptable to the 

NRC staff for implementing specific 

parts of the agency’s regulations, 

techniques that the staff uses in 

evaluating specific problems or 

postulated accidents, and data that the 

staff needs in its review of applications 

for permits and licenses. 

Revision 3 of RG 10.4, ‘‘Guide for the 

Preparation of Applications for Licenses 

to Process Source Material,’’ was issued 

for public comment with a temporary 

identification as Draft Regulatory Guide 

(DG)–0020. RG 10.4 directs the reader to 

the type of information acceptable to the 

NRC staff for the review of an 

application for new licenses, license 

amendments, and license renewals for 

the processing and use of source 

material in such activities as research 

and development; shielding; 

manufacturing depleted uranium and 

thorium-magnesium alloy products; 

manufacturing glass containing 

uranium; manufacturing and 

distributing other products containing 

source material; or shaping, grinding, 

and polishing lenses containing 

thorium. RG 10.4 does not apply to (1) 

activities related to the reactor fuel cycle 

such as uranium and thorium mill 

operation and uranium hexafluoride 

production or (2) large-scale processing 

of source material for extraction of 

metallic compounds such as zirconium 

or hafnium. 

II. Further Information 

In September 2008, DG–0020 was 

published with a public comment 

period of 60 days from the issuance of 

the guide. The public comment period 

closed on November 10, 2008. No 

comments were received. Electronic 

copies of RG 10.4, Revision 3 are 

available through the NRC’s public Web 

site under ‘‘Regulatory Guides’’ at 

http://www.nrc.gov/reading-rm/doccollections/. 

In addition, regulatory guides are 

available for inspection at the NRC’s 

Public Document Room (PDR), which is 

located at Room O–1F21, One White 

Flint North, 11555 Rockville Pike, 

Rockville, Maryland 20852–2738. The 

PDR’s mailing address is USNRC PDR, 

Washington, DC 20555–0001. The PDR 

can also be reached by telephone at 

(301) 415–4737 or (800) 397–4209, by 

fax at (301) 415–3548, and by e-mail to 

pdr.resource@nrc.gov. 

Regulatory guides are not 

copyrighted, and NRC approval is not 

required to reproduce them. 

Dated at Rockville, Maryland, this 27th day 

of January 2009. 

For the Nuclear Regulatory Commission. 

Andrea D. Valentin, 

Chief, Regulatory Guide Development Branch, 

Division of Engineering, Office of Nuclear 

Regulatory Research. 

[FR Doc. E9–5703 Filed 3–16–09; 8:45 am] 

BILLING CODE 7590–01–P 


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