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:
ile tests in paragraph 3 below, or if (3) there is another reason to question their ability. The requalification procedure should be identical to the! original qualification procedure described above. 2. Visual Inspection: Each splice should be inspected prior to forming to assure that all preparations required by the designer and the splice manufacturer have been properly carried out (e.g., cleaning, drying, alignment). All completed mechanical splices should be inspected at both ends of the splice and at the tap hole in the center of the splice sleeve in accordance with the requirements specified by the designer of the structure and approved by the licensee. All visual inspections on completed splices should be performed only after the splices have cooled to ambient temperatures. Among the items which should be included in the specifications are longitudinal centering of sleeve on the spliced ends, allowable voids in filler metal, extent of leaking of filler metal, permissible gap between rebar ends, cartidge size, gas blowout, amount of packing and. slag at the tap hole. Splices that fail to pass visual. inspection should be discarded and replaced, and should not be used as tensile test samples. 3. Tensile Testing: Splice samples may be production splices (i.e., those cut directly from in-place reinforcing) or sister splices (i.e., those removable splices made in-place next to production splices and under the same conditions). Since curved reinforcing bars will not tensile tesi accurately, production splice samples should not be removed from curved reinforcing bars for tensile testing. Straight sister splice samples should be made as testing substitutes for each of the required curved reinforcing bar production splices. The sampling frequency specified in paragraph 4b. should then be followed. Production splice samples should not be cut from the structure where the mechanical splicing sleeve is shop welded to an anchorage in a region of high stress concentration,