ML19221B267
| ML19221B267 | |
| Person / Time | |
|---|---|
| Issue date: | 06/30/1975 |
| From: | NRC OFFICE OF STANDARDS DEVELOPMENT |
| To: | |
| References | |
| REGGD-07.004, REGGD-7.004, NUDOCS 7907200129 | |
| Download: ML19221B267 (1) | |
Text
U.S. NUCLEAR REGULATORY COMMISSION June 1975 REG JLFOPdf bu8DE OFFICE OF STANDARDS DEVELOPMENT s
REGULATORY GUIDE 7.4 LEAKAGE TESTS ON PACKAGES FOR SHIPMENi OF RADIOACTIVE MATERIALS A. INTRODUCTIJN
- 3. Mmimum requirements for leakage test pro-cedures.
The Commission's regulation, 10 CFR Part 71,
" Packaging of Radioactive Materi.1 for Transport and ANSI N14.5 is related directly to the package TransporNion of Radmactive M.tenal Under Certam containment requirements of the International Atomic Conditions," apphes to licensees < f the Commission who Energy Agency, Safety Senes, No. 6.1973 Edition. The transport licensed material or who dehser licensed IAEA requirements specify containment in terms of matenal to a carner for transport. Certain standards and maximum leakage of radioactive material per unit time.
requirements in 10 CFR Part 71 preser be that there.31 ANSI N14.5 describes methods for converting : hose be no release, or limited release, of rad.etive matenala.
containment iequirements to maximum permissible Icak.
from a package or component of a packag,. under certair age rates for the tracer fluid, usually a gas, of a leakage conditions. Section 71.35. " Standards for Normal Con-test procedure. While 10 CFR Part 71 does not generally ditions cf Transport for a Single Package," for example, specify containment in terms of permissible leakage requires that there be no release of radioactive,matenal rates, it is recognized that no system provides absolute from the package contamment vessel under the specified containment. ANSI N14.5 was issued in December 1974 normal t aditions of transport. Section 71.53, "Fre-for trial use and comment.
hminary Determinations," as another example, requires that the pekage contamment vessel not h d at an C. REGULATORY POSITION internal pressure 50 percent higher than the maximum normal operating pressure. This regulatory guide identi.
fies a leak test standard acceptable to the NRC staff for The guidance contamed in ANSI N14.5, " Leakage use in demonstrating that packages of radioactive mate.
Tests on Packages for Shipment of Radioactive Mate.
nal comply with these coatainment requirements.
nals,' constitutes a procedure generally acceptable to the NRC staff for assessing the containment properties B. DISCUSSION of a radmactive material package to satisfy the pro visions of 10 CFR Part 71.
Subcommittee N14.5, Leakage Tests on Packages for Shipment of Radioactive Materials, of the American D, IMPLEMENTATION National Standards Institute ( ANSI) has prepared a standard ( ANSI N14.5') that specifies The purpose of this section is to provide information
- 1. Mmimum leakage test requirements for package to apphcants and hcensees regarding the staff's plans for utihzing this regulatory guide.
containment systems;
- 2. Methods for relatmg leaka,;e test procedures to Effective on pubhcation of this guide, the method desenbed herein will be considered 1cceptable by the package contamment requirements;and Commission's staff in assessing hcensees' performance with respect to demonstrating that packages or their
' Copics of ANSI N 14 5. " Leakage T est s on Packages for Components do not leak. Alternative methods that SNpment of Radoactive Matenals," may be obtaincJ from the Sab Dq art me n t.
A merh an N a tm n a' s tand arJ s insutute, satisfy the requirements in the Commission's regulations 14 30 Brmdw.n, Nm Ymk, N Y.10u t R wall also be considered acceptable.
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