[Federal Register Volume 82, Number 139 (Friday, July 21, 2017)]
[Notices]
[Page 33933]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2017-15336]


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NUCLEAR REGULATORY COMMISSION

[NRC-2017-0161]


Assessment of the Assumption of Normality (Employing Individual 
Observed Values)

AGENCY: Nuclear Regulatory Commission.

ACTION: Regulatory guide; withdrawal.

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SUMMARY: The U.S. Nuclear Regulatory Commission (NRC) is withdrawing 
Regulatory Guide (RG) 5.22, ``Assessment of the Assumption of Normality 
(Employing Individual Observed Values).'' This RG is being withdrawn 
because the guidance for licensees to develop written procedures 
describing statistical analyses of nuclear material accounting data, 
specifically when assessing the assumption of normality in a data set, 
is no longer needed.

DATES: The effective date of the withdrawal of RG 5.22 is July 21, 
2017.

ADDRESSES: Please refer to Docket ID NRC-2017-0161 when contacting the 
NRC about the availability of information regarding this document. You 
may obtain publicly-available information related to this document, 
using the following methods:
     Federal Rulemaking Web site: Go to http://www.regulations.gov and search for Docket ID NRC-2017-0161. Address 
questions about NRC dockets to Carol Gallagher; telephone: 301-415-
3463; email: [email protected]. For technical questions, contact 
the individuals listed in the FOR FURTHER INFORMATION CONTACT section 
of this document.
     NRC's Agencywide Documents Access and Management System 
(ADAMS): You may obtain publicly-available documents online in the 
ADAMS Public Document collection at http://www.nrc.gov/reading-rm/adams.html. To begin the search, select ``ADAMS Public Documents'' and 
then select ``Begin Web-based ADAMS Search.'' For problems with ADAMS, 
please contact the NRC's Public Document Room (PDR) reference staff at 
1-800-397-4209, 301-415-4737, or by email to [email protected]. The 
ADAMS accession number for each document referenced in this notice (if 
that document is available in ADAMS) is provided the first time that a 
document is referenced. The basis for the withdrawal of this guide is 
found in ADAMS under Accession No. ML16225A659.
     NRC's PDR: You may examine and purchase copies of public 
documents at the NRC's PDR, Room O1-F21, One White Flint North, 11555 
Rockville Pike, Rockville, Maryland 20852.
    Regulatory guides are not copyrighted, and NRC approval is not 
required to reproduce them.

FOR FURTHER INFORMATION CONTACT: Glenn Tuttle, Office of Nuclear 
Materials Safety and Safeguards, telephone: 301-415-7230; email: 
[email protected]; and Harriet Karagiannis, Office of Nuclear 
Regulatory Research, telephone: 301-415-2493; email: 
[email protected]. Both are staff of the U.S. Nuclear 
Regulatory Commission, Washington, DC 20555-0001.

SUPPLEMENTARY INFORMATION: Regulatory Guide 5.22 was published in April 
1974 to provide guidance on meeting the requirements related to 
material control and accounting (MC&A) statistical control procedures 
in Sec.  70.22(b) of title 10 of the Code of Federal Regulations (10 
CFR), ``Contents of applications.'' This requirement, regarding 
submittal of the licensees' description of its MC&A procedures, did not 
specifically require the methodology that the guidance in RG 5.22 
addressed and no longer exists in 10 CFR 70.22(b). The MC&A 
requirements have all been moved to 10 CFR part 74 and no specific 
requirements exist for assessing the assumption of normality.
    Regulatory Guide 5.22 endorsed the American National Standards 
Institute (ANSI) Standard N15.15-1973, ``Assessment of the Assumption 
of Normality (Employing Individual Observed Values),'' with 
qualifications. The ANSI Standard N15.15-1973 provided a common method 
used in assessing the assumption of normality in a data set. However, 
the NRC is not aware that any licensee ever used this particular RG or 
the ANSI standard it endorsed since the method is not required by NRC 
regulations. Instructions on performing such an analysis, if a licensee 
chose to test their MC&A data for the assumption of normality, can be 
found in NUREG/CR-4604 (PNL-5849), ``Statistical Methods for Nuclear 
Material Management'' (ADAMS Accession No. ML103430339). NUREG/CR-4604 
was developed to be a comprehensive guidance document on statistical 
methods that licensees may use in evaluating MC&A data.
    Withdrawal of a RG means that the guide no longer provides useful 
information or has been superseded by other guidance, technological 
innovations, congressional actions, or other events. The NRC is 
withdrawing RG 5.22 because it is no longer needed. The withdrawal of 
RG 5.22 does not alter any prior or existing NRC licensing approvals or 
the acceptability of licensee commitments to RG 5.22. Although RG 5.22 
is withdrawn, current licensees may continue to use it, and withdrawal 
does not affect any existing licenses or agreements. However, by 
withdrawing RG 5.22, the NRC will no longer approve its use in future 
requests or applications for NRC licensing actions.

    Dated at Rockville, Maryland, this 17th day of July, 2017.

    For the Nuclear Regulatory Commission.

Thomas H. Boyce,
Chief, Regulatory Guidance and Generic Issues Branch, Division of 
Engineering, Office of Nuclear Regulatory Research.
[FR Doc. 2017-15336 Filed 7-20-17; 8:45 am]
 BILLING CODE 7590-01-P