Document: NRC Regulatory Guide
Document ID: 0983c879-43f8-412c-9dbd-bbadabdfe3f3
Document Type: regulatory_guide
Title: Mechanical (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1306/ML13064A126.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.10
CFR Part: 
CFR Title: 

Content:
e. 4. Tensile Test Frequency: Separate test cycles should be established for mechanical splices in horizontal, vertical, and diagonal bars, for each bar size, and for each splicing crew as follows: a. Test Frequency for Production Splice Test Samples. (Program to be used where no curved bars are Cadwelded). If only production splices are tested, the sample frequency should be: 1 of the first 10 splices 1 of the next 90 splices 2 of the next and subsequent units of 100 splices b. Test Frequency for Combinations of Production and Sister Splices. If production and sister splices are tested, the sample frequency should be: 1 production splice of the first 10 production splices 1 production and 3 sister splices, for the next 90 production splices 3 splices, either production or siater splices, for the next and subsequent units of 100 splices. At least one-fourth of the total number of splices tested should be production splices. 5. Procedure for Substandard Tensile Test Results a. If any production or sister splice tested fails to meet the tensile test specification of paragraph 3a. Copies may be obtained from the American Society for Testing and Materials, 1916 Race Street, Plhiladelphia, Pa. 19103. 1.10-2 above, and the observed rate of splices that fail the tensile test at that time does not exceed 1 for each 15 consecutive test samples, the sampling procedure should be started anew. If any production or sister splice used for testing fails to meet the tensile test specification in paragraph 3a. above, and the observed rate of splices that fail the tensile test exceeds 1 for each 15 consecutive test samples, mechanical splicing should be terminated. In addition, the adjacent production splices on each side of the last failed splice and four other splices distributed uniformly throughout the balance of the 100 production splices under investigation should be tested, and an independent laboratory analysis should be made to identify the cause of all failures. The results