JB/T 8687-1998 Sampling inspection of pump products

JB/T 8687-1998 This standard specifies the inspection level and qualified quality level of sampling inspection of pump products. This standard is applicable to the batch sampling inspection of the same product or the same parts produced in batches under the same conditions by pump manufacturers. JB/T 8687-1998 Sampling inspection of pump products JB/T8687-1998 standard download decompression password: www.bzxz.net

ICS23.080
Machinery Industry Standard of the People's Republic of China
JE/T8687-1998
Sampling inspection for pump pruducts1998-03-19 Issued
Ministry of Machinery Industry of the People's Republic of China
199807-01 Implementation
/8687-1998bzxz.net
Production standards are issued by the National Standardization Technical Committee and dated! The drafting unit of this standard is Shenyang Water System Research Institute, and the person in charge of this standard is Zhang Jiuwei.
Standard of the Machinery Industry of the People's Republic of China
Sampling inspection of pump products
Sampling inspection of pump products This standard specifies the inspection level of the system product sampling inspection JA/T86871998
This standard is applicable to the remaining standards! For the same products or parts produced in batches under the same conditions, the same standards are inspected in batches. The standard clauses included in the standard are listed in the reference standard. They are cited in this standard and become the clauses of this standard: When the standard is published, all versions are valid: All new standards will be revised, and all parties using this standard should explore the possibility of using the following standards to report the new version, GB2828·8? 3. Numbers and terms for inspection and sampling (applicable to the inspection of subsequent batches)
The terms and terms used in this standard shall comply with the provisions of the G standard. The sampling method and type of sampling method can be adopted in one-time sampling or one-time sampling: the one-time sampling method shall be in accordance with the provisions of Table 1, and the one-time sampling method shall be in accordance with the provisions of Table 2. Table 1
Sample size ||tt| ... tt||+··The first sampling plan A of the same company was finalized;-
The Ministry of Machinery Industry approved it on 1998-03-19
1.+Qualified state quota,
19980701 implementation
Approved by the surrounding area
9·~15
16--25
151~286
221~·50G
JH/T 8687 -1998
Second sample reporting plan
Formal book inspection
List fixed number
Additional inspection
Judgment number
Note: +·One makes every effort to keep the first sample under the first sampling method, some fresh cars are large or large, the batch size will be the largest batch size, the selection of the case group remains unchanged!
Use the new implementation of the above salary sampling and scheme, A-.Combined road determination ·Re
Inspection level regulations
Use general inspection level 1
Qualified quality level regulations
Not specially determined
Buy qualified sense plate water AL is 4,0.
To determine the strictness of inspection
Use the first sampling or the second sampling of the next month, generally the normal inspection should be used, and the inspection results can be summarized. If the quality of the positive batch is good, the inspection strictness can be adjusted according to the transfer rules specified in the multiplication table. The judgment of whether the batch is qualified or unqualified
1·Second random inspection
According to the results of the detailed inspection·If the number of unqualified products found in the sample is less than or equal to the judgment value A, the batch is judged to be qualified: if the number of unqualified products found in the positive sample is greater than or equal to the judgment value, the batch is newly determined to be unqualified: Second random inspection
JH/T 8687-1998
Based on the inspection results, if the number of unqualified products found in the first batch is less than or equal to the first determination number A:, the batch is determined to be qualified; if the number of unqualified products found in the first batch is greater than or equal to the second determination number R, the batch is determined to be unqualified. If the number of unqualified products found in the first batch is greater than the first determination number A and less than the second determination number R, the second batch is inspected. If the total number of unqualified products found in the first batch is less than or equal to the second determination number A:, the batch is determined to be qualified; on the contrary, if it is greater than or equal to the second determination number R, the batch is determined to be unqualified.
Table 3.
Table! Inspection and strict transfer table
section dangerous strict
strict inspection section
high pull release
nature inspection efficiency
strict inspection→stop and start note
this wave of batches has batches
nature wrinkle batch heart quality
technical level
quantity: 5 batches unqualified
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