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4.
4.
4.
4.
5 sampling
5.
Table 2 Classification of unqualified
5.
5.
5.
5.
5.
5.
5.
5.
5.
5.
5.
2.
4 Batch determination
According to the provisions of 5.
2.
3, if it is unqualified, after repairing or rejecting the unqualified product, the sample can be re-submitted for inspection with the same strictness.
If it is still unqualified, the batch will be judged as unqualified
.
5.
3 Type inspection
5.
3.
1 Form the inspection group according to the provisions of GB2829:
5.
3.
1.
1 4.
1 and 4.
3 of this standard are the first group;
5.
3.
1.
2 This standard 4.
2.
1, 4.
2.
2, and 4.
2.
3 are the second to fourth groups respectively
.
5.
3.
2 Single sampling plan according to GB2829
5.
3.
2.
1 The first group RQZ=65, DL=1, n=3, Ac=1, Re=2;
5.
3.
2.
2 The second to fourth groups RQL=30, DL=1, n=3, Ac=0, Re=1
.
5.
3.
3 Judgment of unqualified units of the first group of samples
5.
3.
3.
1 When the category B disqualification is more than one item, and the category C disqualification is more than two items;
5.
3.
3.
2 When the category B unqualified is greater than two items, and the category C unqualified is zero;
5.
3.
3.
3 Class B disqualification is zero, and class C disqualification is greater than four
.
5.
3.
4 If the sample units of the second to fourth groups have a category A unqualified, the sample unit is determined to be unqualified
.
5.
3.
5 When one test group fails, the type inspection shall be determined as unqualified
.
6 Test method
6.
1 Steel drum inspection is divided into factory inspection and type inspection
.
6.
1.
1 Factory inspection
6.
1.
1.
1 4.
1, 4.
2.
2, and 4.
3 of this standard are factory inspection items;
6.
1.
1.
2 4.
2.
1.
1 of this standard is a mandatory inspection item for each steel drum
.
6.
1.
2 Type inspection
6.
1.
2.
1 4 (requirements) specified in this standard are type inspection items;
6.
1.
2.
2 When steel drums have one of the following conditions, type inspection shall be carried out:
a.
New product or old product is transferred to factory for trial production and type appraisal;
b.
When changes in structure, materials, and processes may affect product performance;
c.
Normal production, inspection every six months;
d.
When production is resumed one year after production is stopped;
e.
When the national quality supervision agency puts forward a requirement for type inspection
.
6.
2 Basic dimensions
Detect with universal measuring tools
.
6.
3 Air tightness test
According to the provisions of GB325 Appendix B (Supplement)
.
6.
4 Hydraulic test
According to the provisions of GB325 Appendix C (Supplement)
.
6.
5 Drop test
According to the regulations of GBT4857.
5, the steel drum is not subject to humidity treatment, and 98% of the water can be filled in the drum.
Choose the edge to drop one at 5 and 6 points, and one at the 5th and 6th line.
The highest position of the steel drum after falling Drill holes to balance the pressure inside and outside the barrel
.
6.
6 Assembly quality of the closure
According to the provisions of GB13251
.
6.
7 The quality of the inner and outer surface protective layer shall be carried out in accordance with the provisions of GB325 Appendix A (Supplement)
.
6.
8 Appearance quality
Use hand feel, visual inspection and general measuring tool inspection
.
7 Marking, packaging, transportation and storage
7.
1 Mark the appropriate position on the top of the bucket
a.
The name or code of the manufacturer;
b.
Production year and month;
c.
CFC-11 packaging steel drum, one-time use
.
7.
2 Packaging
Steel drums are packed in containers, pallets or methods agreed with the user
.
7.
3 Transportation
Steel drums are thin-walled containers and should be avoided from bumping, falling and rolling during transportation, loading and unloading
.
7.
4 Storage
Steel drums should not be stacked in the open, and the bottom layer should be cushioned when stacking
.