Document: NRC Regulatory Guide
Document ID: c8bca664-b179-482a-a948-1ff683ef6b67
Document Type: regulatory_guide
Title: Structural Acceptance Test for Concrete Primary Reactor
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1303/ML13038A421.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.18
CFR Part: 
CFR Title: 

Content:
be subjected lt) an JUCeptfc ieý,ihx ineses the Pontaimn ainernal pressure nlu imr approxijmate y equal pre~ssure ::iiicreinents fr omT atopeic pressure to. at least: 1.15 times, the Lcon ,t.ai %n :n .i .e n .tdesiiunrpr .essu ,re. The conrtainment shoul"'d -b.e. depiess-uný.!Zed 'in' -the. same numnber of inc.rements. Measuremens, sI should. be recorded: at atumosphieni p~ressure-s ,and atec rsuelvlof thpe pressurization aind decpressfirjation 6c Lies. At each level, the pressure should-belhcld cons~tant to r at least one hour before,-the detflee lions;'and' strains are recorded. Crack patterns Should bc ricorded at -atmospheric pressur~e both before and. mirmediatel.. alter. the test. and at the maximumn PrCSSUrTC I tel achket-d during the test. SoJ. thiat a complete -pictuie of the containment''s overAll d~edý,on pattern can be determined, the radial de--fin'S, of tile Containment should be measured at Se~erial points along six meridians spaced around. the containmne nta. including locations with varying stiffness Jiaracereisties suh: ais- buttress. wvall. large opc~ning4 ar.ý_ coflflct ions. with otlher structures. Vertical: deflections of the containment should be measured, at' thle. apex :and the springline of the dome. Fomr c-vlifdrmal- containments. these points should be located as shownil on Figure A. For cone-cylinder cont -ainments, these points should be located as shown on: Figure B3.o Thle! radial and tangential deflections of the Con~tamnm; iedt iI0adjacent to the largest opening should be mneas .ýure a t, twelve pointis as sho~wn o n Figure C. I f the second largest opening i-s structurally loaded in a diflerent .mann'er fromn the largest opening, similar mea~surmients- should be made. The measurement. points La etre or relocated for openings with different confiour ati~ons. taking into account the distribution of slreswes and: deformations anticipatedinteprcur 4. The pattern tj- cracks that exceed 0.01 inch in width befre.during. or after the