20、 Non standard LPG cylinders, as well as LPG cylinders baked by fire and scalded by water, shall be handled according to the requirements of Item 3 above.

The above 20 inspection items are the basic items for the inspection of gas cylinders before filling. Although some of them have been inspected item by item during the regular inspection, the inspection before filling cannot be ignored under this excuse. After the gas cylinders pass the regular inspection, most of them will be repeatedly filled hundreds of times, transported thousands of times, and transported tens of thousands of times during their effective service life, which will inevitably cause some damage. In addition, some cylinder users lack the knowledge of safe use of cylinders, refit media, repair cylinder valves or do some tricks on some defects. Moreover, sometimes some harmful impurities will fall into the bottle valve or the bottle, so the inspection items cannot be reduced without authorization. Only by insisting on item by item inspection can it be ensured that no accidents caused by inspection will occur during filling, transportation, storage and use of gas cylinders.

All cylinders that pass the pre filling inspection must fill in the pre filling inspection record form. The items are:

(1) Inspection date (written on the front page);

(2) Name of inspector (written on the front page);

(3) Name of the unit to which the cylinder belongs;

(4) Data review;

(5) Cylinder number;

(6) Gas cylinder manufacturer

(7) Nominal working pressure;

(8) Date of next periodic inspection;

(9) Gas cylinder color mark and inspection color code;

(10) Visual inspection of gas cylinder;

(11) Bottle cap;

(12) Bottle valve;

(13) Fusible alloy plug;

(14) Shockproof ring;

(15) Residual pressure in the bottle;

(16) Purity of the remaining gas in the bottle;

(17) Ambient temperature;

(18) Remarks.

Due to different cylinder structures and different requirements for gas, the above registration items can be increased or decreased according to the actual situation.

In order to save registration time, some grade items can be marked with symbols, and those meeting the requirements can be marked with "√"; Unqualified delimitation“ ×” It shall be brief and concise in the remarks column. The score is unfavorable. Purpose of the system performance.