Paragraph 1 Inspection proceduresF1
The inspector shall use, at his election, one of the two inspection methods described in sub-paragraphs (2), (3) and (4) below.
The inspection methods referred to in sub-paragraph (1) above are a single submission scheme (“method A”) and a multiple submission scheme (“method B”). In the case of each method, the check to be carried out by the inspector shall consist of determining the number of defective measures in the sample taken by him.
Where the inspector elects to use method A, he shall apply, for the purpose of accepting or rejecting the lot submitted, a sampling plan having the following characteristics, that is to say—
a standard quality level (SQL) between 0.40 and 0.90 per cent; and
a limiting quality level (LQ5) between 4.0 and 6.5 per cent.
The following are examples of sampling plans—
Single sampling plan
Sample size number Acceptance number Rejection number LQ5 SQL a 80 1 2 5.8 0.44 b 125 2 3 5.0 0.65 Double sampling plan
Sample size Total size Acceptance number Rejection number LQ5 SQL a First 50 50 0 2 Sample 5.8 0.44 Second 50 100 1 2 Sample b First 80 80 0 3 Sample 5.0 0.65 Second 80 160 3 4 Sample
Where the inspector rejects a lot, he may, if he considers it appropriate to do so and the person submitting it so agrees, inspect each measure of length comprised in the lot and pass, or refuse to pass, as appropriate, each such measure as fit for use for trade in accordance with regulation 25 of these Regulations.
Where the inspector elects to use method B, he shall apply, for the purpose of accepting or rejecting the lot submitted, sampling plans in accordance with the table below—
Sampling plans
| Order of submission | Sample size | Acceptance number | Rejection number |
|---|---|---|---|
| 1 | 70 | 0 | 1 |
| 2 | 85 | 0 | 1 |
| 3 | 105 | 0 | 1 |
| 4 | 120 | 0 | 1 |
Where the inspector has accepted a lot, he shall test the next lot to be submitted to him in accordance with the parameters applicable to “Order of submission 1” in the above sampling plans.
Where the inspector has rejected a lot (and accordingly not passed the measures of length comprised in it as fit for use for trade), the person submitting it to the inspector may submit to him for inspection either the same or another lot. The inspector shall then inspect the lot submitted to him in accordance with the parameters of the line of the above sampling plans immediately below the one applied by the inspector to the lot rejected by him immediately before. If the inspector does not accept the lot after inspecting it in accordance with the parameters applicable to “Order of submission 4” in the above sampling plans, he shall, if the person submitting it so agrees, inspect each measure of length comprised in the lot.
Annotations
Textual amendments
- F1
Sch. 2 inserted (25.11.1996) by The Measuring Equipment (Measures of Length) (Amendment) Regulations 1996 (S.I. 1996/2636), reg. 1, Sch.