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:
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 test should.be mlapped nea th -bse all intersecution, at midheight of the wall, at the ý'pringline of sthe domne. around the largest opening." 'and around- the :second .largest opening. if struciurally: 16a'ted' in ai different::manner from the lietopen in In.- rprestrýesse d .con tain ments. -the crack patle'rn should Al-so- be mapped at the intersection between a, buttress :anld- ýthe. wall, at the intersection between'the, top. ring girder and the wall, and on the top shel f, o th rino gýirde6r.: At each location an area of at c ..last 4 uaehtsolbempped. In pi OtOtv~pe containmfients only! strain measuremient~s .in te 'Concrete sufficient: to permit a comnpleteý e ,valuation Of* strah -distribution. shoudA be determined at the following- loations--in the'rwaill a atý the top 0)1 the base m~at onsone meridian. b. at ýthe la rgest opernin, prxmtly 0.St -fr~orn , theredge of the ,openin , jbength ta thcness at Ithe edge: of thieopemihg). anid, c.at the level of theý springline~ of thedoeo., .one mieridian ."- 4lhese measurements should be, hd avth re~e-'. positions:within.the wall, i.e., ne, .r he' . nside f.cea•" ;the.: midpon ad nefTeoutside face. In a prototyýpe. • jnt a.p~rxm presr containment theo `t-rtic, hio riio.ta and/ ii:,. a fd:. shear..:strainrs in theconcret.shou.d b.... niesured .nd . one "restressin- anctior 0.o a vertical t4ndon Th.i measurement s!ould.rbe Iade.-at a distance: belo.w the base Plate of' one. half`:thewid.th.% o1 thease..6. plate a•b' at a distance medstir•ed :normial..tob .the w-all. from ie centerline of tfihe. tendon o:of approxi • Iand one-half tendon duct dianmetes'. - . 6. In. noniprototype conitiainmients.str~ain measiuirneients:! need not be nmadeif st:rai a:ný leve's haive beenio:•rrelat•de with deflection