NEN EN 295-2 : 2013

      Cooperating organizations
      National foreword
1 General
      1.1 Object and field of application
      1.2 References
      1.3 Definitions
             1.3.1 Batch
             1.3.2 Isolated batch
      1.4 Internal quality control and third party
             assessment
             1.4.1 Quality supervision
             1.4.2 Internal control
             1.4.3 Inspection and audits by third party
                      assessors
      1.5 Sampling of fired ware (EN 29002:1987 Clause 4.9)
             1.5.1 Selection of samples
             1.5.2 Change in batch condition
      1.6 Calibration (EN 29002:1987 Clause 4.10)
2 Records
3 Quality control testing
      3.1 General
             3.1.1 Visual inspection
             3.1.2 Rejection after retest
      3.2 Pipes
             3.2.1 Routine testing
             3.2.2 Batch sizes
             3.2.3 Sample size for pipes for quality at the
                      manufacturer's works
             3.2.4 Retest procedure for pipes from
                      resubmitted rejected batches
             3.2.5 Sampling after delivery works
      3.3 Regular test: Pipes to EN 295-1 Clause 2.14
      3.4 Optional tests - pipes to EN 295-1 Clauses 2.10,
             2.11, 2.13, 2.15, 2.16 and 2.17
      3.5 Fittings
             3.5.1 Routine testing
             3.5.2 Batch sizes - Fittings
             3.5.3 Sample size - Fittings
             3.5.4 Retest procedure for fittings from
                      resubmitted rejected batches
      3.6 Regular tests - Fittings
             3.6.1 Regular test and sampling to EN 295-1
                      Clause 2.6
             3.6.2 Regular test and sampling to EN 295-1
                      Clause 2.18 (excluding junctions)
             3.6.3 Regular test and sampling to EN 295-1
                      Clause 2.18 - junctions
             3.6.4 Retest procedure and sampling for regular
                      tests to 3.6.2 and 3.6.3
      3.7 Optional tests for fittings for EN 295-1 Clauses
             2.12.2 and 2.15
      3.8 Regular tests and sampling to EN 295-1
             Clause 2.12.1
      3.9 Joints - sleeve design flexible mechanical
             3.9.1 Batch sizes
             3.9.2 Acceptance procedures relating to
                      couplings for sleeve joints purchased
                      from an outside supplier (EN 29002
                      Clause 4.5.4) to EN 295-1 Clause 3.1.4
             3.9.3 Acceptance procedures relating to
                      polypropylene couplings made by coupling
                      manufacturers who hold a Certificate mark
                      license to EN 295
      3.10 Joints - polyurethane
             3.10.1 Regular test and sampling to EN 295-1
                      Clause 3.1.2
             3.10.2 Evaluation tests and sampling to EN 295-1
                      Clause 3.1.2
             3.10.3 Retest procedure and sampling for regular
                      tests to 3.10.1.1 and 3.10.1.2
             3.10.4 Retest procedure and sampling for regular
                      tests to 3.10.1.3 and 3.10.1.4
      3.11 Rubber sealing elements
             3.11.1 Regular test and sampling for rubber
                      sealing elements attached to the pipe to
                      EN 295-1 Clause 3.1.1
             3.11.2 Retest procedure and sampling for tests
                      to 3.11.1
      3.12 Moulded plastics internal socket diameter
             3.12.1 Regular testing and sampling to EN 295-1
                      Clause 3.6 and EN 295-1 Table 8
             3.12.2 Retest procedure and sampling for tests
                      to 3.12.1
      3.13 Pipe joint assemblies
             3.13.1 Type tests and sampling to EN 295-1
                      Clauses 3.2.1, 3.3, 3.4 and 3.7.1
             3.13.2 Retest procedure and sampling for type
                      tests to 3.13.1
             3.13.3 Evaluation tests and sampling to EN 295-1
                      Clauses 3.2.2, 3.3, 3.4, 3.5, 3.8 and 3.9
             3.13.4 Optional tests to EN 295-1 Clause 3.7.2
             3.13.5 Sampling after delivery from
                      manufacturer's works
4 Inspection procedures and switching rules for inspection
      by attributes - Table 3 to Table 7
      4.1 Acceptability determination
             4.1.1 Single sampling
             4.1.2 Double sampling
      4.2 Operation of switching rules
             4.2.1 Normal inspection
             4.2.2 Normal to reduced inspection
             4.2.3 Reduced to normal inspection
             4.2.4 Tightened inspection
             4.2.5 Tightened to normal inspection
             4.2.6 Discontinuation of inspection
      4.3 Tightened inspection for rejected batches
5 Inspection procedures and switching rules for inspection
      by variables - Table 8 to Table 10
      5.1 Distribution
      5.2 Acceptability determination
             5.2.1 Mean and standard deviation
             5.2.2 Acceptability criteria for specification
                      limit
      5.3 Operation of switching rules
             5.3.1 Normal inspection
             5.3.2 Normal to reduced inspection
             5.3.3 Reduced to normal inspection
             5.3.4 Tightened inspection
             5.3.5 Tightened to normal inspection
             5.3.6 Discontinuation of inspection
Table 1 - Scope of audit by third party assessors as applicable
Table 2 - Applicable dimensional and performance requirements
          for fittings EN 295-1 Clauses 2.2, 2.3, 2.6, 2.7, 2.8
          and 2.18
Table 3 - Normal inspection for both single and double sampling
          plans by attributes
Table 4 - Reduced inspection for both single and double sampling
          plans by attributes
Table 5 - Limit numbers for reduced inspection
Table 6 - Tightened inspection for both single and double
          sampling plans by attributes
Table 7 - Tightened inspection for resubmission of rejected
          batches and isolated batches
Table 8 - Normal inspection by variables
Table 9 - Tightened inspection by variables
Table 10 - Reduced inspection by variables
National Appendix NA (informative)