ISO 19881:2018 ガス状水素—陸上車両の燃料コンテナ | ページ 6

3.5.1

Type 1

metal container

3.5.2

Type 2

container which contains a metal liner (3.14) reinforced with a resin impregnated continuous filament (hoop-wrapped)

Note 1 to entry: See 3.11.

3.5.3

Type 3

container which contains a metal liner (3.14) reinforced with a resin impregnated continuous filament (fully-wrapped)

Note 1 to entry: See 3.10.

3.5.4

Type 4

container which contains a resin impregnated continuous filament with a nonmetallic liner (3.14) (all composite)

Note 1 to entry: See 3.3.

3.6

design family

group of containers consisting of one fully qualified design and variations on that design that comply with Table 6

3.7

destroyed

in a state of alteration which makes a container physically unusable for its purpose

3.8

dry hydrogen

hydrogen which meets or exceeds the quality level in ISO 14687

3.9

fold

place where two material flows meet in such a manner as to create a sharp visual groove

3.10

full-wrapped

reinforced by a composite (3.3) material applied over the entire liner (3.14) including the domes

3.11

hoop-wrapped

reinforced by a composite (3.3) material applied in a substantially circumferential pattern over the cylindrical portion of the liner (3.14) so that the filament does not transmit any significant stresses in a direction parallel to the container longitudinal axis

3.12

leakage

release of contents through a defect or crack

3.13

leak test gas

gas for testing leaks that consists of dry hydrogen (3.8) , dry helium or blends that contain these gases at a detectable level

Note 1 to entry: Use leak test gas in 9.3.

3.14

liner

inner gas tight container or gas container to which the overwrap is applied

3.15

maximum fueling pressure

MFP

maximum pressure applied to a compressed system during fueling

Note 1 to entry: The maximum fueling pressure is 125 % of the nominal working pressure (3.18) .

3.16

minimum required burst pressure

minimum burst pressure (3.2) that is to be met during a burst test and which is needed to demonstrate the required stress ratio (3.26)

3.17

normal cubic centimeter

Ncc

dry gas that occupies a volume of 1 cm³ at a temperature of 273,15 K (0 °C) and an absolute pressure of 101,325 kPa (1 atm)

3.18

nominal working pressure

container pressure, as specified by the container manufacturer, at a uniform gas temperature of 15 °C and full gas content

3.19

permanently attached

intended to remain fixed to a particular vehicle for the lifetime of the container or vehicle, whichever comes first

3.20

permeation

diffusion of the gaseous contents to the atmosphere at a molecular level, by means of pores or molecular gaps

3.21.1

autofrettage pressure

pressure to which a container is taken with the intent of yielding the liner (3.14) or inner surface of the container

Note 1 to entry: The autofrettage operation is considered to be part of the manufacturing operation and is conducted prior to proof testing.

3.21.2

fill pressure

pressure attained at the actual time of filling

Note 1 to entry: Fill pressure varies according to the gas temperature in the container, which is dependent on the filling parameters and the ambient conditions. The maximum fill pressure should not exceed 125 % of the nominal working pressure (3.18) .

3.21.3

hydrostatic pressure

pressure to which a container is taken during acceptance testing

Note 1 to entry: See 17.3.5.

3.22

pressure relief device

PRD

device that, when activated under specified performance conditions, is used to vent the container contents

3.23

rejectable damage

damage as outlined in ISO 19078 or CGA C-6.4 and in agreement with the container manufacturer's recommendations

3.24

rupture

sudden and unstable damage propagation in the structural components of the container resulting in loss of contents

3.25

settled temperature

uniform gas temperature after any change in the temperature caused by filling has dissipated

3.26

stress ratio

minimum ultimate strength of the fiber, as determined in pressure container burst tests, divided by the stress in the fiber at the nominal working pressure (3.18)