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GB 10543-2014: [GB/T 10543-2014] Rubber hose and hose assemblies for aircraft ground fuelling and defuelling
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Basic data | Standard ID | GB 10543-2014 (GB10543-2014) | | Description (Translated English) | [GB/T 10543-2014] Rubber hose and hose assemblies for aircraft ground fuelling and defuelling | | Sector / Industry | National Standard | | Classification of Chinese Standard | G42 | | Classification of International Standard | 83.140.40 | | Word Count Estimation | 30,311 | | Date of Issue | 12/12/2014 | | Date of Implementation | 10/1/2015 | | Older Standard (superseded by this standard) | GB 10543-2003 | | Quoted Standard | GB/T 5564-2006; GB/T 9867-2008; GB/T 528-2009; GB/T 3512-2001; GB/T 9881-2008; GB/T 5563-2013; GB/T 1690-2010; GB/T 20739-2006; GB/T 9573-2013; GB/T 8019-1987; GB/T 24134-2009; ISO 7989-1; YB/T 5357-2009; GB/T 9572-2013; GB/T 14905 -2009; GB/T 7528-2011 | | Adopted Standard | ISO 1825-2010, IDT | | Regulation (derived from) | National Standards Bulletin 2014 No. 30 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the aircraft ground fueling and drain with the size, structure and requirements of the four kinds of typed hose and hose assembly. This standard applies to: a) the volume fraction of aromatics content of not more than 30% of the pe | GB 10543-2014: [GB/T 10543-2014] Rubber hose and hose assemblies for aircraft ground fuelling and defuelling
---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Rubber hose and hose assemblies for aircraft ground fuelling and defuelling
ICS 49.100; 83.140.40
G42
National Standards of People's Republic of China
Replacing GB 10543-2003
Aircraft ground fueling and drain hose and rubber
Hose assemblies - Specification
(ISO 1825.2010, IDT)
Issued on. 2014-12-22
2015-10-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
The standard Chapter 8 (in which fuel contaminants and fire performance), Chapter 9 is mandatory, the rest are recommended.
This standard was drafted in accordance with GB/T 1.1-2009 given rules.
This standard replaces GB 10543-2003 "aircraft ground fueling and drain rubber hose and hose assemblies", and
GB 10543-2003 compared to the main technical changes are as follows.
--- Revised classification, the abolition of A and D (see Chapter 4, 2003 version 4.1);
--- Increase the combustion tube test (see Table 5);
--- Modified room temperature Flexing test temperature by 23 ℃ to 20 ℃ (Table 5, Appendix E, 2003 version of Table 3);
--- Modify the low temperature flexibility tests from -25 ℃ to -30 ℃ (Table 5, Appendix F, 2003 version of Table 3);
--- Modify the index of fuel mass fraction soluble matter, from 3% to 4% (see table version 4,2003 Table 2);
--- Modify the fuel before and after contact with the interlayer adhesion strength (see Table 5,2003 version of Table 3);
--- Modify the pressure requirements (see Table 5,2003 version of Table 4);
--- Modified flag (see Chapter 11, Chapter 14 of the 2003 edition);
--- Increased test proved/report (see Chapter 12);
--- Added Appendix F, Appendix I, Appendix Appendix N and O;
--- Revised Appendix A (see Appendix A, 2003 edition of Appendix A);
--- Amend Appendix B in the low temperature brittleness test temperature tolerance range (see Appendix B, 2003 edition of Appendix B);
--- Revised Appendix D (see Appendix D, 2003 edition Appendix D);
--- Revised Appendix E Flexing test temperature (see Appendix E, 2003 edition Appendix E);
--- Amend Appendix F (see Appendix G, 2003 edition Appendix F);
--- Amend Appendix G (see Appendix H, 2003 edition Appendix G);
--- Amend Appendix H (see Appendix J, 2003 edition Appendix H);
--- Amend Appendix J (see Appendix K, 2003 edition Appendix J);
--- Revised Appendix M (see Appendix M, 2003 edition Appendix M);
--- Amend Appendix K (see Appendix L, 2003 edition Appendix K);
--- Deleted Appendix L.
This standard uses the translation method identical with ISO 1825.2010 "Aircraft ground refueling and drain rubber hose and hose assemblies Regulation
Fan. "
Correspondence between the consistency of the standards of international documents and normative references of the following documents.
--- GB/T 528-2009 vulcanized rubber or thermoplastic rubber tensile stress strain properties (ISO 37.2005, IDT);
--- GB/T 1690-2010 vulcanized rubber or thermoplastic rubber of resistance to liquids - Test methods (ISO 1817.2005, MOD);
--- GB/T 3512-2001 vulcanized rubber or thermoplastic rubber hot air and heat accelerated aging test (eqvISO 188.1998);
--- GB/T 5563-2013 Rubber and plastic hoses and hose assemblies - Hydrostatic testing (ISO 1402.2009, IDT);
--- GB/T 7528-2011 Rubber and plastic hoses and hose assemblies terminology (ISO 8330.2007, IDT);
--- GB/T 8019-1987 motor gasoline and aviation fuel gum assay (Jet evaporation method) (ISO 6246. 1981, MOD);
--- GB/T 9572-2013 Rubber and plastic hoses and hose assemblies - Determination of resistance and conductivity (ISO 8031.2009, IDT);
--- GB/T 9573-2013 Rubber and plastic hoses and hose assemblies hose size and hose assemblies length measurement method
(ISO 4671.2007, IDT);
--- GB/T 9881-2008 rubber terminology (ISO 1382.2008, MOD);
--- GB/T 14905-2009 Rubber and plastics hoses - Determination of adhesion between layers (ISO 8033.2006, IDT);
--- GB/T 20739-2006 Rubber Products Storage Directory (ISO 2230.2002, IDT);
--- GB/T 24134-2009 Rubber and plastics hoses under static conditions Assessment of ozone resistance (ISO 7326.2006, IDT);
--- YB/T 5357-2009 steel plating of zinc or zinc - 5% aluminum alloy (ISO 7989-2.2007, MOD).
This standard made the following editorial changes.
--- Remove the body "bar" unit, said retaining only "MPa" units.
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Rubber and rubber products hose Standardization Technical Committee Technical Committee (SAC/TC35/SC1) centralized.
This standard was drafted. Hose Co., Ltd., Guangzhou, Shenyang new Feiyu Rubber Products Co., Ltd., Shenyang Rubber Research and Design Institute.
The main drafters of this standard. HE Meng Group, Cai Hui, Zhang Hang, Wang Shuli, yellow stream Hui, WANG Shu.
This standard replaces the standards previously issued as follows.
--- GB 10543-1989, GB 10543-2003.
Aircraft ground fueling and drain hose and rubber
Hose assemblies - Specification
1 Scope
This standard specifies the aircraft ground fueling and drain with the size, structure and requirements of the four kinds of typed hose and hose assembly.
This standard applies to.
a) the volume fraction of aromatics content of not more than 30% of the petroleum-based fuel;
b) working environment temperature -30 ℃ ~ 65 ℃, and without damaging static storage at -40 ℃ ~ 70 ℃ weather conditions;
c) the maximum working pressure of 2.0MPa, including when using the hose to withstand the impact pressure.
Note 1. C type hose suitable for aircraft refueling facility under all normal working pressure. Also applies to non-vacuum applications over refueling facilities/fuel oil railcar
And drain.
Note 2. F type hose for C hoses NA high flow refueling aircraft and drain facilities.
Note 3. E-type and F type hose is also suitable for oil tanker truck and railcar filling and drain, refueling tankers to the oil, and does not allow a large twist lift
Lifting platform.
2 Normative references
The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein
Member. For undated references, the latest edition (including any amendments) applies to this document.
GB/T 5564-2006 Rubber and plastic hoses low flexing test (ISO 4672.1997, IDT)
GB/T 9867-2008 Rubber, vulcanized or thermoplastic - Determination of abrasion resistance (abrasion rotating cylindrical drum machine method) (ISO 4649.
2002, IDT)
ISO 37 Rubber, vulcanized or thermoplastic - Determination of tensile stress-strain properties (Rubber, vulcanizedorthermoplas-
tic-Determinationoftensilestress-strainproperties)
ISO 188 vulcanized rubber or thermoplastic rubber Accelerated aging and heat resistance test (Rubber, vulcanizedorthermoplastic-
Acceleratedageingandheatresistancetests)
ISO 1382 term rubber (Rubber-Vocabulary)
ISO 1402 Rubber and plastics hoses and hose assemblies - Hydrostatic testing (Rubberandplasticshosesandhose
assemblies-Hydrostatictesting)
ISO 1817.2005 Test methods for liquid-resistant vulcanized rubber (Rubber, vulcanized-Determinationoftheeffect
ofliquids)
ISO 2230 Rubber products stored Guide (Rubberproducts-Guidelinesforstorage)
ISO 4671 Rubber and plastics hoses and hose assemblies hose sizes and methods of measurement (Rubberand length of hose assemblies
plasticshosesandhoseassemblies-Methodsofmeasurementofthedimensionsofhosesandthe
lengthsofhoseassemblies)
ISO 6246 Petroleum products volatile and middle distillate fuel evaporation residue top blowing method (Petroleumproducts-Gum
contentoflightandmiddledistilatefuels-Jetevaporationmethod)
Determination of resistance under ISO 7326 Rubber and plastics hoses ozone static conditions Performance (Rubberandplasticshoses-Assess-
mentofozoneresistanceunderstaticconditions)
Part 1 ISO 7989-1 nonferrous metal plating and steel wire products. General principles (Steelwireandwire
products-Non-ferrousmetaliccoatingsonsteelwire-Part 1. Generalprinciples)
ISO 7989-2 steel and non-ferrous metal coated wire products - Part 2. Zinc or zinc alloy plating (Steelwireand
wireproducts-Non-ferrousmetaliccoatingsonsteelwire-Part 2. Zincorzinc-aloycoating)
ISO 8031 Rubber and plastics hoses and hose assemblies resistance and conductivity measurement (Rubberandplasticshosesand
hoseassemblies-Determinationofelectricalresistanceandconductivity)
Determination of ISO 8033 Rubber and plastics hoses adhesion strength between layers (Rubberandplasticshoses-Determination
ofadhesionbetweencomponents)
ISO 8330 Rubber and plastics hoses and hose assemblies term (Rubberandplasticshosesandhose
assemblies-Vocabulary)
3 Terms and Definitions
ISO 1382 and ISO 8330 define the following terms and definitions apply to this document.
3.1
Hose assemblies hoseassembly
Equipped with a permanent or reusable hose fittings on the hose end.
3.2
Electrically connecting hose or hose assemblies electricalybondedhose/hoseassembly
A wire connection to export static hose or hose assemblies.
3.3
Electrically conductive hoses or hose assemblies electricalyconductivehose/hoseassembly
Conductive rubber layer instead of using static electricity exported wire hose or hose assemblies.
Category 4
According hose structure and conductivity will be divided into four kinds of type, two levels.
Typed level structure
BM electrically connected to at least two laying low resistance conductor and an outer layer of conductive adhesive
C Ω antistatic, laying a layer of conductive outer plastic
EM is electrically connected to at least lay a metal spiral, two low resistance conductor and an outer layer of conductive adhesive. Higher oil discharge capacity
F Ω antistatic, laying at least one non-conductive and non-metallic spiral conductive outer layer of glue
5 volume drum size
Hoses should be adapted to work on a hose reel drum assembly equipment. Hose reel drum dimensions are shown in Table 1.
Note. The volume wrapped in a cross section of the hose reel drum remains substantially round, not flat collapsible hose can curl confused.
Table 1 reel drum diameter
Nominal inside diameter of the hose
The minimum outer diameter of the reel drum with
6 Materials and Structures
6.1 Hose
If the hose is manufactured and cored law on the core sulfide, particulate release agent should not be used. Hoses should be uniform quality, visual inspection
It should be no holes, bubbles, foreign matter and other defects.
Hoses should be of the following components.
--- Petroleum-based fuel resistant synthetic rubber inner liner;
--- Woven, braided or wound reinforcing fabric layer;
--- Abrasion resistance, and resistance to outdoor exposure to petroleum-based fuels conductive synthetic rubber coating.
Only E and F of the hose should be buried spiral structure enhancement layer. Enhanced E-type steel hose should be used and high carbon steel wire
Compliance with the ISO 7989-1 and ISO 7989-2.
B and E should be laid low resistance wire, to ensure a conductive hose.
Outer coating may allow a slight water wove sulfide produced.
6.2 hose assemblies
To meet electrical performance requirements, the assembly method of joints shall comply with the requirements of Chapter 9.
7 Dimensions and Tolerances
An inner diameter of 7.1
When measured by the method of ISO 4671, and the inner diameter and tolerances shall comply with the requirements of Table 2.
Table 2 and inner diameter tolerances
Nominal inside diameter of the hose
Hose ID
7.2 Thickness
When measured by the method of ISO 4671, the thickness of the inner liner of the hose should be not less than 1.6mm.
When measured by the method of ISO 4671, the nominal inside diameter of the hose is less than 50, the thickness of the cover layer should not be less than 1.6mm. Nominal inside
Diameter greater than or equal to 50 hoses, the thickness of the cover layer should not be less than 2.0mm.
7.3 concentricity
When measured by the method of ISO 4671, the concentricity of the hose with the inner wall until all indicator reading sheet overcoat layer between the surface measured
Shown, should not exceed 1.0mm.
7.4 length tolerance
Measured length tolerance should be specified length of ± 1%.
7.5 Hose mass per unit length
The maximum mass per unit length of the hose should be consistent with the requirements in Table 3.
Table 3 mass per unit length of the hose
Nominal inner diameter
The maximum length of the hose unit mass
kg/m
B and C E and F
Table 3 (Continued)
Nominal inner diameter
The maximum length of the hose unit mass
kg/m
B and C E and F
8 Physical Properties
8.1 mix
When using the test methods specified in this standard, the physical properties of the rubber compound with an inner liner and an outer cover layer should be in accordance with Table 4 shows the value of. should
Or from a separate test specimens vulcanized test pieces were tested on the hose, but the low temperature brittleness and abrasion test should be the same in the hose and curing conditions
Test on molded test pieces. Should type test and routine test given in Appendix M, it is proposed to produce acceptance test in accordance with Appendix N
get on.
Table 4 rubber compound requirements
performance
Claim
Outer liner cladding
experiment method
Tensile strength, minimum/MPa 7.0 7.0 ISO 37 (dumbbell specimens)
Elongation at break, min /% 250 300 ISO 37 (dumbbell specimens)
Fuel swelling, changes in the volume of liquid B, the maximum/5075%
ISO 1817.2005,7.3
(B solution in 40 ℃ × 48h)
Fuel solubles content, maximum/NA 4.0% See Appendix A
Low temperature brittleness no cracks no cracks in Appendix B
Wear resistance, maximum/mm3 NA 140 GB/T 9867-2008 Method A
Anti-aging properties
Tensile strength /%
Elongation at break Change /%
(Oven method)
8.2 hoses and hose assemblies
Hoses and hose assemblies shall meet the requirements specified in Table 5.
Table 5 Requirements hoses and hose assemblies
Performance requirements, test methods
Hose sizes
An inner diameter shown in Table 2 ISO 4671
Lining thickness, minimum 1.6mm ISO 4671
Overlay thickness, minimum
1.6mm (nominal inside diameter of < 50)
2.0mm (nominal inner diameter ≥50)
ISO 4671
Concentricity, maximum 1.0mm ISO 4671
Length tolerance ± 1% ISO 4671
Mass per unit length, see Table 3 Maximum
Hose test
Interlayer adhesion strength
In contact with the fuel before the minimum
After contact with the fuel, the minimum
3.0N/mm
2.0N/mm
Appendix C
Fuel contaminants, Re, maximum 10mg/100mL Appendix D
Ozone resistance 2x magnifier hose without cracking
ISO 7326
(40 ℃ × 72h)
Can flex
Room temperature
Hypothermia
Without permanent deformation or visible structural damage.
Resistance does not increase, does not damage the electrical continuity.
At (20 ± 5) ℃ to verify pressure test shall comply with the requirements of Appendix J
Appendix E (20 ° C)
Appendix F (-30 ° C)
Flattening recovery rate (F models only)
After 1min
After 10min
Restore the original diameter of 90%
Restore the original diameter of 95%
At (20 ± 5) ℃ to verify pressure test shall comply with the requirements of Appendix J
Appendix G
Bending Properties and (B and C only) hose (20 ± 5) ℃ verify no leakage under pressure.
Resistance does not increase, does not damage the electrical continuity.
Adhesion strength between layers is not less than 2.0N/mm
Appendix H
Fire performance hose should immediately stop burning the flame is removed, or no visible light emission within 2min
Appendix I
Working under pressure change in length, the largest
B and C. 0 to 7%;
E and F. 0 to 12%
Appendix J
Verify pressure
At 4.0MPa pressure.
No leakage or damage;
No electrical continuity or resistance increases beyond the specified
Appendix J
Burst pressure, the minimum 8.0MPa Appendix J
Table 5 (Continued)
Performance requirements, test methods
Vacuum test
B and C (all sizes). at 50kPa absolute pressure hose no visible structural damage;
B and C (size 19 to 63 inclusive). absolute pressure at 85kPa, flattened hose not exceed 20% of the original diameter;
Type E. absolute pressure at 15kPa, metal balls can damage not visible through the hose structure;
F type. absolute pressure at 35kPa, metal ball through no visible structural damage
Appendix K
Electrical performance requirements of the electrical properties of the hose should meet the performance requirements of electrical hose assemblies 9.1, 9.2
Hose assemblies
Verification test
At 4.0MPa pressure.
No leakage or damage;
No electrical continuity or resistance increases beyond the specified
Appendix J
Joint robustness under pressure regulations, there should be no leakage or joint pull off phenomenon Appendix L
Electrical Properties
B and E. maximum resistance 100Ω;
C and F. resistance is 103Ω ~ 106Ω
9.1
9.2
9 Electrical Properties
9.1 B and E (electrical connection)
In between or among the reinforcing layer should be laid at least two low resistance electrically connected to the metal wire, which should pave the way to ensure that the use of the hose
Along the full length of the hose to maintain electrical continuity. Each connecting wire should be not less than 95 shares. Used for metal wires should have excellent fatigue resistance.
When B-type and E-type hose mounting connectors, electrical wire connecting portion to grow to be folded into the hose lumen disposed inner liner and pipe fittings
Stem position about half length. If the hose is not equipped with connectors, electrical wires should be connected to each end of each hose to grow at about 150mm.
When tested in accordance with ISO 8031, each assembly resistance should not exceed 100Ω.
Note. Make sure electrical continuity of a suitable and efficient method is to use a 4.5V battery and a 3.5V, 0.3A test lamp. Micro-light bulb is enough to represent a desirable electrical continuity.
9.2 C and F (antistatic, conductive layer having an outer cladding)
For hose assemblies, it is necessary to form an electrical connection between the outer cladding and fittings. When the test in accordance with ISO 8031, the resistance of each assembly should be 103Ω ~ 106Ω.
10 Frequency of testing
To confirm the type test is a method of manufacturing a hose to meet this standard for all materials, construction and test requirements of the test. The test shall be repeated five years or when changes in manufacturing methods or materials occur at least every other.
Routine tests are tests before shipment to all hoses and hose assemblies as requested by.
Production factory acceptance test is to control the quality of products and the implementation of appropriate tests.
Type tests and routine tests specified in Appendix M of making.
Production acceptance test is given in Appendix N of. Appendix N specified test frequency only as a recommendation.
11 logo
11.1 Hose
Each hose should be on the outer coating of not more than 1m intervals clearly and permanently mark the following.
a) manufacturer's name or logo, such as MAN;
b) the manufacturer's product identification, such as No.123;
d) typed and levels such as C/Ω;
e) nominal diameter, such as 63;
f) the maximum working pressure in MPa, such as 2.0MPa;
g) after manufacturing quarter and year two, as 2Q10;
h) a unique serial number.
11.2 hose assemblies
Hose assemblies joints should be permanently identifies the following information.
a) the name or code fitter;
b) Hydraulic test report corresponding to the serial number (The serial number should be the same hose assemblies manufacturer at the factory inspection records on the test file).
Rec hose together with fittings, hose assemblies that is provided to the end user.
12 test showed single or test report
When asked, each hose or hose assemblies shall provide proof of a single test or test report. Where applicable, include the following.
a) hose manufacturer's name;
b) the joint name of the manufacturer;
c) fitter name;
d) Do not hose type/level;
e) or hose assembly length and the nominal inner diameter;
f) hose serial number or reference number;
g) assembly serial number or reference number;
h) hose manufacturing year and quarter;
i) assembly manufacturing month and year;
j) verification hydrostatic pressure;
k) resistor;
l) date of the test.
13 Cleanliness
Before delivery hose cavity should be thoroughly cleaned, rinsed and dried.
Note. The recommended method of rinsing and disposal hose Appendix O.
14 Transport and storage protection
To protect the pipe joint and to prevent damage to the inner liner, at the end of the test, the manufacturer shall install protective caps at the ends of all hoses and hose assemblies.
Appendix A
(Normative)
Determination of Fuel solubles
A.1 Test Procedure
A.1.1 Take one 5g samples from a hose liner, remove attached to its fibers. The sample cut into small pieces approximately 3mm3 of sample, accurately weighed 5g ± 0.01g crushed sample is placed in a flask, ISO 1817.2005 specified in the B solution 100mL, at 40 ℃ ± 2 ℃
Maintained at a temperature 96h. Take appropriate measures to prevent liquid evaporation losses.
A.1.2 The hot flask was filtered through a filter into a pre-weighed good quality glass dish. The flask was washed with a small amount of liquid B and the filter residue.
A.1.3 glass dish in a water bath of liquid evaporated and the residue was dried with a ventilation drying oven at a temperature of 150 ℃ ± 3 ℃ for 2h. The residue was weighed quality, accurate to 0.01g.
Note. During the test, the residue should be taken to avoid overheating, because they can not estimate the extent of polymer degradation due to overheating, and thus draw the wrong result.
A.2 Calculation Results
Fuel solubles content of the fuel is calculated as a percentage by mass soluble residue original specimen quality.
Appendix B
(Normative)
Low temperature brittleness test methods
B.1 Test Equipment
Test equipment Figure B.1.
Figure B.1 low temperature brittleness test equipment
B.2 step
A sample of 150mm × 25mm × 2mm fixed to the two clamps, so that in a plane, which is exposed 127mm
In between the two clamps, then reduce fixture spacing 1mm. If the sample taken from the hose, you should remove the adhesion reinforcing fabric.
Placed within the specimen holder containing a coolant Dewar vessel, the sample is completely immersed in it. At a temperature of -40 ℃ ± 1 ℃ to maintain 30min, then a fixture in the same plane will move directly to another fixture in the 20s to shorten the clamp spacing 25mm.
Check sample cracking the case.
Note. adding methanol or ethanol crushed ice (solid carbon dioxide) method can be used to obtain the temperature of -40 ℃, and by carefully adding ice to pieces
Maintaining the temperature.
Appendix C
(Normative)
Adhesive strength test method between the layers
Adhesive strength C.1 and fuel before contact
Cut from E and F type hose along the helical direction of the sample, according to the provisions of ISO 8033 adhesion test carried out to measure the following minimum adhesion strength between the layers (N/mm).
a) an inner liner and an enhancement layer;
b) enhancement layer and an outer cladding layer;
c) enhancement between the layers.
C.2 adhesion strength after contact with fuel
The hose was cut about 300mm long sample, and closed at one end. Use by ISO 1817.2005 is filled with a predetermined liquid B and the other end of the hose to gently cover. The sample was placed at 20 ℃ ± 5 ℃, adjusted 168 2 0h. Clear hose, according to the determination of the minimum Cl bond strength between the layers.
twenty one
Appendix D
(Normative)
Test methods for resistance to fuel contamination
D.1 Principle
By measuring the analog pretreatment liquid dissolved substance out from the hose to determine fuel contaminants. Results nominal inside diameter of the hose 76 representation.
D.2 Test Procedure
Take a long hose not less than 300mm, sealed at one end with a glass stopper. Use by ISO 1817.2005 hose filled with liquid B regulations, and kept at room temperature for 3d. Liquid is drawn off, visual inspection of liquid contaminants.
B filled with liquid hose again, at room temperature the next day, drain the fluid, visual inspection of liquid contaminants. This procedure is repeated at intervals of daily continuous 4d test.
B filled with liquid hose again and kept 3d at 20 ℃ ± 5 ℃. Liquid is drawn off and the residue was measured according to ISO 6246 after the liquid evaporates.
Also according to ISO 6246 Determination of residue blank sample (liquid B) after evaporation.
Calculated R value, that is the residue after subtracting the mass of volatile quality blank test, test per 100mL liquid residue expressed in milligrams.
D.3 Calculation Results
...
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