Document: NUREG-0800
Document ID: 808cea66-69b8-4f91-9fb2-62b3b99bc87a
Document Type: srp
Title: NUREG-0800
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340579.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3
CFR Part: 
CFR Title: 

Content:
ly, strain measurements sufficient to permit an evaluation of strain distribution should be recorded at least at two opposing meridians at the following locations on the wall: (1) at the bottom of the wall, and (2) at mid-height of the wall. These strain measurements should be made at least at three positions within the wall section; one at the center and one each near the inner and outer surfaces. d. In nonprototype drywells, deflection and strain measurements need not be made if strain levels have been correlated with deflection measurements during the acceptance test of a prototype drywell if measured strains and deflections are within the predefined tolerance of their predicted responses. e. Any reliable system of displacement meters, optical devices, strain gauges, or other suitable apparatus may be used for the measuremens. f. If the test pressure drops due to unexpected conditions to or below the next lower pressure level, the entire test sequence should be repeated. Significant deviations from the previous test should be recorded and evaluated. g. If any significant modifications or repairs are made to the drywell following and because of the initial test, the test should be repeated. h. A description of the proposed acceptance test and instrumentation requirements should be included in the preliminary safety analysis report. i. The following information should be submitted prior to the performance of the test: (i) The numerical values of the predicted responses of the structure which will be measured. (ii) The tolerances to be permitted on the predicted responses. (iii) The bases on which the predicted responses and the tolerances thereon were established. j. The following information should be included in the final test report: (i) A description of the actual test and instrumentation. (ii) A comparison of the test measurements with the allowable limits (predicted response plus tolerance) for deflections and strains. 3.8.3-28 Rev. 1 - July 1981 - (iii) An