Authorization:
The engineering construction unit or supervision unit shall submit the Power of Attorney for Witness Units and Witnesses to the construction unit, engineering quality supervision station and engineering inspection unit. The power of attorney shall specify the names, certificate numbers and witness numbers of the witness unit and the witnesses of this project, and the number of witnesses shall not be less than 2.
Sampling:
When sampling and making samples at the site, the sampling personnel of the construction enterprise must have witnesses present, monitor the samples, take effective measures to seal the samples together with the inspectors entrusted by the inspection, or send the samples to the testing unit.
Send for inspection:
When the inspection unit accepts the entrusted inspection task, it must fill in the entrustment form, and the witness shall produce the witness certificate and sign the inspection entrustment form. Testing units must implement a password management system.
Test report:
The inspection unit shall affix the seal of "witness sampling inspection" on the inspection report. If there are unqualified samples, they should be reported to the quality supervision station within 24 hours, and the unqualified project account should be established. ?
Five requirements:
① The test report should be printed by computer.
(2) The test report adopts a unified form at the provincial level.
③ The signature of the test report must be handwritten.
④ The test report shall be in a unified format and stamped with the special seal of "Witness Inspection".
(5) Indicate the name of the witness.
Report set:
The first case: the inspection result is qualified, and the construction unit receives the report and handles the sign-in registration.
In the second case: if the test result is unqualified, the testing unit will notify the witness to report to the monitoring station. The witness received the test report.
To witness the test report of sampling for inspection, the laboratory shall indicate the witness in the remarks column of the report and affix the special seal of "Witness for Inspection", and shall not affix the seal of "Responsible only for incoming samples". Once the test is unqualified, it shall immediately notify the construction quality supervision institutions and witness units that supervise the project. If the inspection is unqualified and double sampling and re-inspection are required according to relevant regulations, it shall be implemented according to witness sampling and inspection procedures. The test report without witness and "witness inspection" shall not be used as quality assurance data and completion acceptance data.
Extended data:
Witness sampling and inspection: relevant personnel of the construction unit shall take samples at the site according to regulations and send them to a qualified testing unit for testing. Witnesses and sampling personnel are responsible for the representativeness and authenticity of the samples. Today, most of this work is done by supervisors and construction units.
Practice has proved that witness sampling and inspection work is the primary link to ensure the notarization, scientificity and authority of construction engineering quality inspection, and plays an important role in improving engineering quality and achieving quality objectives. It provides a direct basis for the supervision unit to accept and evaluate the project quality. However, in the actual operation process, due to the reasons from the owner, supervisor, construction unit and inspection department, there are some difficulties and problems in the development of this work, that is, the authenticity of the work is difficult to guarantee.
References:
Baidu encyclopedia-witness sampling