U.S. Nuclear Regulatory Commission
Applicability of 10 CFR 50 Appendix B to Chemicals and Reagents
Title: Applicability of 10 CFR 50 Appendix B to Chemicals
See Interpretative Guide from the IE Manual entitled as
above and dated April 1, 1977. This document states that
Appendix B to 10 CFR 50 applies to chemicals and reagents
used in primary and secondary systems water chemistry
control and analysis. Appropriate controls include testing
prior to initial use, and labeling and dating to assure
proper shelf-life control.
The purpose of this document was to identify specific
criteria that should be used by Inspection and Enforcement
personnel for the review and evaluation of licensee
management control systems for chemicals and reagents used
in primary and secondary system water chemistry control and
analysis. 10 CFR 50.34 (b) (6) requires licensees to
describe in the Final Safety Analysis Report (FSAR)
information relating to managerial and administrative
controls to be used to assure safe operation.
In complying with these requirements, most licensees
document an FSAR commitment to the requirements of ANSI
N18.7. Section 5.3.7 of ANSI 18.7-1972 and Section 5.3.8
of ANSI 18.7-1976 provide general guidance concerning
chemical and radiochemical control activities.
The criteria of 10 CFR 50 Appendix B delineate the need for
appropriate controls of certain materials. These materials
include chemicals and reagents used in primary and
secondary system water chemistry control and analysis.
These controls may be in the form of administrative
procedures which include provisions for storage and use of
laboratory and bulk chemicals used in primary and secondary
water chemistry control and analysis. Examples of the type
of controls deemed appropriate include:
1. Testing of purchased and lab-prepared chemicals and
reagents prior to initial use to ensure that physical and
chemical properties are consistent with purchase
specifications or other technical requirements.
2. Labeling and dating to assure proper shelf life
control plus any special environmental considerations that
must be maintained during storage.
Regulatory references: 10 CFR 50, Regulatory Guide 1.33
Subject codes: 10.2, 10.4