Production of ground control devices

The inspection of ground control devices is divided into factory inspection and type inspection. (Production of Ground Control Devices)

1. Factory inspection

When the product leaves the factory, each set should be inspected. If one item is found to be unqualified, the product will be judged as unqualified. The inspection items are: hydrostatic pressure test and sealing performance test. Appearance inspection. (Production of Ground Control Devices)

2. Type test

When one of the following situations occurs, type inspection should be conducted.

——Prototype trial production.

——When there are significant changes in the structure, materials, and processes of formally produced products that may affect product performance.

——When national or industry quality supervision agencies request type inspection. (Production of Ground Control Devices)

The inspection items are as follows:

a) Hydrostatic pressure test

b) Sealing performance test

c) Pressure temperature stability test

d) Appearance inspection

Judgment rule: When the product undergoes type inspection, one set of samples is randomly selected for inspection. If one indicator is unqualified, another set is selected for inspection. If one indicator is unqualified, the type inspection is judged as unqualified. (Production of Ground Control Devices)

The product specifies the following main contents:

——Manufacturer name or logo.

——Product name.

——Product model.

——Implement standards.

——Equipment parameters (including working pressure, control head main channel, applicable medium, working temperature, equipment quality).

——Manufacturing date. (Production of Ground Control Devices)