BS EN 326-2:2010+A1:2014
$189.07
Wood-based panels. Sampling, cutting and inspection – Initial type testing and factory production control
| Published By | Publication Date | Number of Pages |
| BSI | 2014 | 48 |
This European Standard specifies methods for internal initial type testing (ITT) and internal factory production control (FPC) as well as external control of wood-based panels for their compliance with EN 13986 and other relevant product specifications. However, it may also apply, at the option of the manufacturer, to wood-based panels applied for non-construction purposes.
This European Standard is not applicable for the assessment of compliance with specifications of panels comprised in consignments. In such cases, EN 326‑3 applies.
For internal factory production control, if required, methods for the assessment of conformity of batches and of production over longer periods are given.
For external control, if required, methods for the initial inspection of a factory and initial type testing of a product, and for the surveillance of the factory production control, are given.
In the factory production control small test pieces are used. The statistics of evaluation is based on normal distribution.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | Contents Page |
| 7 | 1 Scope 2 Normative references 3 Terms and definitions |
| 9 | 4 Symbols and indices 4.1 Letter symbols (see also EN 326-1:1994) |
| 10 | 4.2 Indices (see also EN 326-1:1994) |
| 11 | 5 Initial type testing (ITT) 5.1 General 5.2 Initial type testing by variables 5.2.1 General 5.2.2 Sampling of panels |
| 12 | 5.2.3 Evaluation 5.2.3.1 Evaluation by using the test results directly |
| 13 | 5.2.3.2 Evaluation by using relative test results 5.3 Initial type testing by attributes 5.3.1 Sampling |
| 14 | 5.3.2 Evaluation 5.3.2.1 General 5.3.2.2 Single sampling plan (Option 1) 5.3.2.3 Double sampling plan (Option 2) (see Table 4) 6 Factory production control 6.1 General |
| 15 | 6.2 Sampling 6.2.1 General 6.2.2 Dimensional tolerances, squareness and edge straightness 6.2.3 Other properties assessed as attributes and not included in 6.2.1 or 6.2.2 6.2.4 Sampling and cutting of test pieces 6.3 Factory production control by variables 6.3.1 Characteristics |
| 16 | 6.3.2 Product types 6.4 Control of production 6.4.1 General |
| 17 | 6.4.2 Factory production control by variables for batch production |
| 19 | 6.4.3 Factory production control by attributes for batch production 6.4.3.1 Bonding strength of plywood 6.4.3.2 General characteristics |
| 20 | 6.4.4 Internal records of an established product 6.4.4.1 Control charts |
| 21 | 6.4.4.2 Conformity of established product 6.5 Initial inspection of factory and factory production control (FPC) |
| 22 | 6.6 Continuous surveillance, assessment and approval of the factory production control |
| 23 | Annex A (informative)Example of initial type testing by variables – Evaluation of bending strength of particleboards (see 5.2) A.1 Example A.2 Sampling (see 5.1.2) |
| 24 | A.3 Test results, records and evaluation (see 5.2.3 and EN 326-1:1994, Clause 7) |
| 25 | Annex B (informative)Factory production control by variables – Example: Batch production (see 6.4.2) B.1 General B.2 Sampling B.3 Testing B.4 Calculation and recording of test results of the first sample B.4.1 Example for the case that the first sample of one panel fulfils the panel characteristic requirement |
| 26 | B.4.2 Example for the case that the first sample of one panel does not fulfil the panel characteristic requirement |
| 29 | Annex C (informative)Example of initial type testing attributes – Evaluation of bonding quality of plywood (see 6.4.3.1) C.1 Example C.2 Sampling plan C.3 Sampling (see 5.3.1) C.4 Test data and evaluation of bond shear strength and apparent cohesive wood fibre failure percentage C.4.1 General C.4.2 First sample C.4.2.1 Test data after pre-treatment 5.1.1 according to EN 314-1:2004 |
| 30 | C.4.2.2 Test data after pre-treatment 5.1.4 according to EN 314-1:2004 |
| 31 | C.4.3 Second sample C.5 Single sampling plan |
| 32 | Annex D (informative)Control of factory production control records – Examples of the determination of differences between factory testing and external testing (see 6.6) D.1 General D.1.1 Use of unconditioned test pieces D.1.2 Paired testing D.1.2.1 General D.1.2.2 Selection and cutting |
| 33 | D.2 Example (1): Swelling in thickness tested according to EN 317 D.2.1 Sample of example (1) D.2.2 Control of variability |
| 35 | D.3 Example (2): Internal bond tested according to EN 319 D.3.1 General D.3.2 Sample of Example (2) D.3.3 Control of variability |
| 36 | D.4 Determination of a significant difference between the results from the alternative test procedure and from the standard reference test method |
| 38 | Annex E (informative)Example of the calculation of a linear correlation (see 6.6) |
| 42 | Annex F (informative)Example of the determination of a significant difference between the results from the alternative test procedure and from the standard reference test method (see 6.6) in accordance with EN 13986 F.1 General |
| 43 | F.2 Control of variability (see Annex D) |
| 44 | F.3 Determination of a significant difference (see Annex D) |
