Document ID: chunk:federal_register_of_legislation:F2024L00446:front:0:p59
Version: federal_register_of_legislation:F2024L00446
Segment Type: other
Provision Reference: 
Character Range: 181671–183070

the production defective is 0.l (consumer's risk
              = 10 per cent).

              For each of the criteria emissions given in Table 1B of paragraph 6.3.10. of this Regulation, the following procedure is used (see Figure 8/1 in paragraph 8.2.3.2. of this Regulation) where:

               L = the natural logarithm of the limit value for the criteria emission,

               xi = the natural logarithm of the measurement for the i-th vehicle of the  sample,

               s = an estimate of the production standard deviation (after taking the  natural logarithm of the measurements),

               n = the current sample number.

               Compute for the sample the test statistic quantifying the sum of the standard deviations from the limit and defined as:

               If the test statistic is greater than the pass decision number for the sample size given in Table A2/1, the criteria emission is passed;

               If the test statistic is less than the fail decision number for the sample size given in Table A2/1, the pollutant is failed; otherwise, an additional vehicle is tested and the calculation reapplied to the sample with a sample size one unit greater.

              Table A2/1
              Pass/fail decision criteria for the sample size

Cumulative number
of tested vehicles (current sample size)  Pass decision threshold  Fail decision threshold