GB 24161-2009Periodic inspection and evaluation of composite cylinders for breathing apparatus (English PDF)

4.1 Inspection agency

4.1.1 Periodic inspection of composite inspection agency, should have the conditions meet the requirements of GB 12135 and press TSGZ7001 by country House special equipment safety supervision and administration department for approval.

4.1.2 The inspection agency must be equipped with test performance composite cylinders of special test instruments and equipment. If the cylinder inside glimpse of light, low-power magnifying glass, Electronic balance, can be inserted into the endoscope composite cylinders, rectangular device, meter stick, depth sounder, in line with GB/T 3934 of M18 × 15-6H threaded plug Regulation, M18 × 1.5-6h thread ring gauge or in compliance with the appropriate standards, and the threaded cylinder valve adapted to other specifications threaded plug, threaded ring and the like.

4.2 Periodic Inspection

Periodic inspection cycle 4.2.1 composite cylinders are generally inspected once every three years.

4.2.2 During use, if found that composite cylinders have serious corrosion damage or doubts about its safety and reliability, should be carried out in advance test.

4.2.3 stock or disable more than one inspection cycle composite cylinders shall be tested prior to enabling.

4.3 Test Project

Composite cylinders Periodic inspection items include visual inspection, internal inspection, bottle inspection, hydrostatic testing, internal drying cylinder valve and air tightness test Test.

5.1 Record

5.1.1 Only by checking the registration and inspection of composite cylinders manufacturing marks mark. And "composite cylinders visual inspection evaluation form" (see Appendix A) on Detailed records of the following. the use of gas cylinder units, test dates, number of cylinders, cylinder volume of water, nominal working pressure, date of manufacture, test pressure Due date, thread size and so on.

5.1.2 without obtaining national special equipment safety supervision and management department of the manufacturing license of manufacturing production of composite cylinders, manufacturing and inspection mark Key inspection mark or incomplete items will not be blurred examination nor documented registration composite cylinders, press scrap.

Over the design life of composite cylinders 5.1.3 upon registration shall not test, press scrap.

5.1.4 Early inspection of composite cylinders shall identify the cause and make records.

5.2 composite cylinder media should be air, oxygen or nitrogen-oxygen gas mixture, for unknown media bottle, cylinder valve can not open the gas cylinder should be Seized bottles were stored in order to be properly handled separately. After the filling of oxygen cylinders, the test should be strictly forbidden to do tests or oil degreasing.

5.3 Dismantling the cylinder valve

If there are composite cylinders of compressed gas, should slowly open the cylinder valve, deflate, until confirmed bottle gas pressure and environmental pressure a when delivered, the composite cylinders on the cylinder clamping fixture, with appropriate methods remove the cylinder valve.

5.4 Composite inner and outer cylinder surface cleaning

Available neutral detergent and water temperature not exceeding 60 °C clean water to clean the surface of the composite inner and outer cylinders of dirt, corrosion, loose table Surface protection layer and other surface debris impede inspection.

5.5 Composite cylinder external cleanup

Inspectors should be able to see the entire outer surface of the composite cylinders. If the sticker to cover up damage to composite cylinders or suspected loss Injury, should be removed sticker. Suspicious injuries signs include. signs or stickers scratched, obviously affected by the impact of traces of oil and so on. Some paste Material will swell in water or water affect the test results, must be removed.

5.6 Composite cylinder internal cleanup

5.6.1 remove any debris composite cylinders inside.

5.6.2 Check all debris removed from the composite cylinders and are recorded in "composite cylinders visual inspection assessment table".

6.2 Rating injury

The degree of injury is divided into three levels.

An injury. refers to minor injury, such as a protective layer or wear a small amount of glass fiber wear, minor scratches and obvious impact marks.

Such damage will not adversely affect the safety of composite cylinders and continue to use, it is normal and acceptable, may continue to use (as shown in Figure F.2,

Figure F. 5, Figure F. 7 and F. 10).

Two injury. refers to the wear and tear damage to a proportionally larger damage, as shown in Figure F. 3 shows the wear. Such damage should be repaired, Pressure test after repair. If the protective layer mend noticeable bulge or falling pressure test composite cylinders should be scrapped.

Three injury. refers to more than two injury wear, scratches and composite cylinders by structural damage impact damage or injury caused by thermal, chemical Goods of corrosion damage. Composite cylinders such damage should be scrapped (as shown in Figure F.1, Figure F.4, Figure F.6, Figure F.8, FIG F.9 and F.11).

6.3 Criteria

6.3.1 Wear

A. depth of less than 0.25mm (as shown in Figure F.2).

Two. depth greater than 0.25mm, which is the glass fiber layer, but the carbon fiber layer intact (Figure F.3).

Three levels. the degree of injury more than two carbon fiber layers injured (Figure F.4).

6.3.2 Scratched

A. regardless of the number or direction, depth of less than 0.25mm (as shown in Figure F.5).

Two. depth greater than 0.25mm, which is the glass fiber layer, but the layers of carbon fiber intact.

Three. more than two degree of injury, the carbon fiber layer has been exposed or damaged (Figure F.6).

6.3.3 Impact damage

A. glass fiber layer appear white spots or area of not more than 50mm2 stratification (Figure F.7).

Class 2. exposed fiberglass, but carbon fiber layer intact.

Three. surface area greater stratification, the carbon fiber layer is exposed to structural deformation or composite cylinders (Figure F.8 and F.9).

6.3.4 Layered

A. pale scar confined to the surface of the glass fiber layer and the area no more than 50mm2.

Two. white scar depth is greater than 0.25mm, but the carbon fiber layer intact.

Three. more than two degree of injury, the carbon fiber layer has been damaged.

6.3.5 Structural Damage

Three. the original structure of the composite cylinder is changed, such composite cylinders or cylinder arc face any concave, convex phenomenon; internal mesh Unit display metal liner deformation; and the cylinder valve connecting portion showing distortion and so on (see Figure F.9).

6.3.6 Thermal Damage

A. only the protective layer is black smoke, external surface cleaning treatment (Figure F.10).

Three levels. local composite cylinder drum kits, carbon fiber layer have significant thermal damage, shape deformation, of the metal liner (Figure F.11).

Chemicals 6.3.7 Corrosion Damage Three. winding layer by chemical corrosion damage, you should check whether the outer surface of the composite cylinders have chemical signs of corrosion. Such as winding layer Partially discolored, dirty or sticky resin, unknown chemicals remain in the inner and outer surfaces of composite cylinders, etc. (eg F.1).

10.1 Drying method and requirements

10.1.1 pressure-tested qualified composite cylinders must be carried out only by internal drying.

10.1.2 the bottle upside down and for some time to bottle the residual water drain net, then use dry air purge, internal heat or other appropriate Method to dry the inside.

10.1.3 When the internal drying temperature should not exceed 65 °C; time should be long enough to ensure that the bottle is completely dry.

10.2 Drying health check

With the endoscope or small bulbs observation bottle drying conditions, such as the inner wall has been fully in dry state, you can install the cylinders.

11.1 Pingfa test

11.1.1 threaded cylinder valve response integrity check, if the gap, crack, incomplete or broken thread, the cylinder valve should be scrapped.

11.1.2 the body deal with inspection and, if abnormal deformation of the cylinder valve should be scrapped.

11.1.3 Thread deformation repair

Bottle with screw connection being dropped, the impact caused by deformation of the thread should be used in line with GB/T 970.1 of M18 × 1.5-6h round Dies for threaded cylinder valve repair, and then in line with GB/T 3934 of M18 × 1.5-6h threaded ring test. For other specifications Threaded applications comply with the appropriate standard round die and threaded ring for repair and inspection. The cylinder valve should be scrapped when test results failed.

11.1.4 Cylinder valve tightness test

Only the cylinder valve should be by air tightness test. If leakage should be replaced with new cylinders. For replacement of wearing parts such as seals, have to Written authorization to the cylinder valve manufacturer and under its guidance, and requirements should be GB 15382 to re-do the valve tightness test.

11.2 Cylinder valve assembly

On the cylinder valve thread and seals After applying the right amount of grease, first hand the bottle screw screwed into the cylinder valve and then treated with a composite gas cylinders clip it Bottle, then tighten the cylinder valve torque wrench, torque is 80N · m ~ 100N · m.

Note. do not enter the rotating cylinder valve can not be forcibly screwed, you should check the cylinder valve thread.

13.1 Check mark

13.1.1 inspection of composite cylinders, reference should "Gas Cylinder Safety Supervision" by the only good test mark.

13.1.2 check mark using 39mm × 22mm label sheets.

13.1.3 check mark Content.

a) Inspection Unit Code;

b) test color;

c) Inspection date (month and year);

d) the next test date (month and year).

Example.

13.1.4 Test color should follow the "Gas Cylinder Safety Supervision" requirement.

13.1.5 check mark should be at the end of the barrel near the bottle shoulder, circumferentially distributed. Each of the check mark should be suitably spaced arrangement neat.

13.1.6 test high marks word 5mm ~ 10mm, should be broadly consistent with manufacturing marks, writing should be clear.

13.1.7 Check mark paste method

In the composite cylinders with non-playing stenciled way to do check mark. Methods for testing on composite cylinders labeled as follows.

a) water with 400 # sandpaper polished on the surface slightly 13.1.5 predetermined position, an area of about 45mm × 25mm;

b) the inspection label on polished place, covered with a transparent epoxy test label.

13.2 Inspection records and scrap

Save 13.2.1 Test record the following recording applications written or electronic form to save the file.

a) "visual inspection of composite cylinders assessment form";

b) "cylinder hydraulic test equipment inspection table" in Appendix B;

c) "composite cylinders Hydrostatic Test Data Sheet" in Appendix C;

d) "composite cylinders Periodic Inspection Report" in Appendix D;

e) "composite cylinders scrapped notice" in Appendix E.

13.2.2 Scrap

Scrapped composite cylinders filled by the inspector "composite cylinders scrapped notice", the technical person in charge of reviewing affix the seal of inspection, the cross to archive and composite cylinders property unit scrapped composite cylinders were crushed or amputated and other destructive process.

Appendix A

(Informative)

Composite cylinder visual inspection evaluation form Composite cylinder visual inspection evaluation form Cylinders using Address Postal Code Phone Cylinder water capacity cylinders number of cylinders color inspection date Nominal working pressure Date of manufacture Degree Have gas bottle valve You are repaired Hydrostatic test date External inspection Signs of heat damage nicks for wear Have any abnormal deformation stratified the outer surface of the description Defect position description other Eligible scrap judgment to be repaired Internal inspection There are the types and quantities of debris odorless the inner surface condition description Defect position description other Eligible scrap judgment to be repaired Check the bottle screw Thread size thread status description Thread Status Assessment other Eligible scrap judgment to be repaired Cylinder valve inspection no cylinder valve cylinder valve and cylinder connecting thread status description Airtightness description Disc whether to replace if Composite cylinders condition Eligible cylinders adhesive labels Attach a label to be repaired cylinders repair cleaning water pressure dropped Other suggestions the labeling of cylinders scrapped Inspector qualification certificate number date Appendix B (Informative) Hydraulic cylinders with measurable test equipment checklist Hydraulic cylinders with measurable test equipment checklist Standard bottle number.

Calibration date

year month day

Check time

Test pressure /

MPa

Standard volume

Full deformation

delta Vp B/mL

Found volume

Full deformation

delta Vp/mL

Residual volume

Deformation /

Full deformation

Volume relative error delta<=1% Verifier Remarks Description. 1. Standard full volume deformation delta Vp B (mL), obtained from the standard bottle calibration certificate.

2. Volume residual deformation value (mL), deformation after pressure release should be zero.

Appendix C

(Informative)

Composite cylinders Hydrostatic Test Data Sheet Composite cylinders Hydrostatic Test Data Sheet Equipment Type. Standard bottle number. Test methods. external test temperature measurement method. °C Test Date. The date Property Unit. Manufacturing Country. manufacturing units. Cylinder Model. Cylinder water capacity. L Nominal working pressure. MPa Cylinders Numbering Factory date hydrostatictest pressure/MPa compress time/Volume Full deformation (delta Vp) /mL Volume Residual deformation value ([Delta] Vp ') /mL Volume Residual deformation rate /Happened What bottle Anomalies test results Pass Fail Experimenter Description. 1. Volume residual deformation rate = [volume residual deformation value (delta Vp ')/full volume deformation (delta Vp)] × 100%.

2. Composite cylinder volume residual deformation rate of <=5% qualified.

3. Hydrostatic test pressure hydrostatic test pressure composite cylinders tested by bottle labels prescribed.

4. For the test invalid test bottles if the test pressure has been raised to the test pressure test bottle more than 90%, should increase the pressure test 0.7MPa, or increased to 1.1 times the original test pressure (whichever is smaller value), re-test.

5. For unqualified composite cylinders shall be indicated treatment, such as re-testing, scrapped.

Appendix D

(Informative)

Composite cylinders Periodic Inspection Report Composite cylinders Periodic Inspection Report (No. word) According to "Gas Cylinder Safety Supervision" and "respirators periodic inspection of composite cylinders and assessment" requirement, the test, inspection your unit Only composite cylinders, by this inspection and testing stations, qualified composite cylinders, a total only, bottle number is.

Notice is hereby given.

Inspector (signature or seal) Technical unit responsible (signature or seal) (unit test chapter) year month day Appendix E (Informative) Composite cylinders scrapped notice Composite cylinders scrapped notice (No. word) According to "Gas Cylinder Safety Supervision" and "respirators composite cyli...