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Appendix requirements for compressed air – Anschutz 9003 User Manual

Page 18

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34

atmospheric pressure must be in line with the
values of the chart.

lubricants 1) is to be applied.

3. Smell and taste
The air must be without significant smell or
taste.

4. Content of carbon dioxide
The content of carbon dioxide must not
exceed 500 ml/m

3

(500 ppm).

5. Content of carbon monoxide
The content of carbon monoxide must not
exceed 15 ml/m

3

(15 ppm).

Content of water

1. There must be no liquid water.

2. The air for compressed air respirators must
have a dew point which is low enough to
avoid condensing and freezing. If the
equipment is used and stored under a known
temperature the dew point under pressure
must be at least 5

°

C below the assummably

lowest temperature. If the conditions for use
and storage of the compressed air reservoir
are not known, the dew point under pressure
must not exceed -11

°

C.

3. The maximum content of water in the air at

Nominal

Max. contents of water in the

pressure

air at atmospheric pressure

bar

mg/m

3

40 - 200

50

> 200

35

Chart 1

Note:

The contents of water of the air which is
delivered from the compressor to fill 200 bar
or 300 bar compressed air containers should
not exceed 25 mg/m

3

.

Checks

Checks

Checks

Checks

Checks

Any suitable method is allowed as far as it
corresponds to the following general
requirements:
• to measure and judge the results the

accuracy of the method must be
considered and

• the proof limit of the applied method must

be below the required limit.

Appendix

Requirements for Compressed Air

Oxygen

The content of oxigen must be within the range
of (21 +/- 1) Vol. % (dry air).

Impurities

1. General information
Compressed air for respiratory equipment
must not contain impurities in a concentration
which might have toxic or harmful effects. In
any case there must be as little impurities as
possible and they must be far below the na-
tional limit of exposition. Combined effects
of more than one impurity must be considered.
If there are no national restricting requirements
the values of 2 to 3 must be applied.
Note: The limit concentration for every
impurity should be deducted from the natio-
nal limit of exposition. The influences of
pressure and exposition time should be
considered as much as possible.

2. Lubricants
The content of lubricants (drops or mist) must
not exceed 0.5 mg/m

3

. In case of synthetic

Components

Mass-%

Volume-%

(dry air)

(dry air)

Oxygen (O

2

)

23, 14

20, 9476

Nitrogen (N

2

)

75, 5

78, 084

Argon (Ar)

1, 288

0, 934

Carbon dioxide (CO

2

)

0, 048

0, 0314

Hydrogen (H

2

)

0, 000003

0, 00005

Neon (NE)

0, 00127

0, 001818

Helium (HE)

0, 000073

0, 000524

Krypton (Kr)

0, 00033

0, 000114

Xenon (Xe)

0, 000039

0, 0000087

Chart 2

Chart 2

Chart 2

Chart 2

Chart 2

Typical composition of natural air

Typical composition of natural air

Typical composition of natural air

Typical composition of natural air

Typical composition of natural air
(ISO 2533)

(ISO 2533)

(ISO 2533)

(ISO 2533)

(ISO 2533)