GRSP Ad hoc Group on R44 COP

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Presentation transcript:

GRSP Ad hoc Group on R44 COP Informal document No. GRSP-34-28 (agenda item B.1.5.) GRSP Ad hoc Group on R44 COP 34th GRSP - 8 to 12 December 2003

The Ad hoc group Germany UK Sweden Spain Clepa France Meeting the 16 & 17 October in Paris Working documents: GRSP/2001/13 GRSP/2003/13 34th GRSP - 8 to 12 December 2003

Agreed principles 3 phases Statistical Control based on: Type approval Qualification of production Control Of Production Statistical Control based on: Mean value Standard deviation 34th GRSP - 8 to 12 December 2003

Sampling Clepa shows that 10 samples don’t bring a lot more confidence than 5 34th GRSP - 8 to 12 December 2003

CRS population Clepa shows that the repartition of the CRS population is skewed and not normal X 2.4S FAIL L 34th GRSP - 8 to 12 December 2003

Qualification of the production With for maximum horizontal head excursion M + 1 x SD ≤ Limit no value ≥ 1.05 x Limit on 5 samples we are confident in the improvement of quality of the production Application of the first criteria to the 3 ms clipped resultant chest acceleration for information only 34th GRSP - 8 to 12 December 2003

Conformity Of Production By batch control Normal: 2 (+2) by batch between 500 and 5000 units => 0.04% (0.08%) (x 4) Strengthened: 4 (+4) by batch between 500 and 5000 units => 0.08% (0.16%) (x 5) By continuous control Normal: 0.02% of the production (x 40) Strengthened: 0.05% of the production (x 30) 34th GRSP - 8 to 12 December 2003

Conclusions Some add on: Control and recording of marking Application to Universal, Semi Universal and Restricted CRS Needs that approval Authorities must verify the conformity of production procedures of manufacturers during periodic visits 34th GRSP - 8 to 12 December 2003