Norsk Standard MFM

NS-EN 474-1:2006+A3:2013

EN 474-1 :2006+A3:2013 (E)

Annex F (normative)

Requirements for earth-moving machinery used in underground working in non-explosive atmosphere

F.1General

This annex gives additional requirements and exceptions for earth-moving machinery intended to be exclusively used in underground working in non-explosive atmosphere.

NOTE 1

Examples of underground working are underground mining and tunnelling.

NOTE 2

For additional requirements for earth-moving machinery used underground in potentially explosive

atmospheres, see EN 1710:2005.

NOTE 3

Finishing or maintenance work in open tunnels is not regarded as underground work according to this

European Standard.

F.20perator's station

F.2.1 Operator's station with cab

Earth-moving machines used in underground working shall be equipped with a cab in accordance with 5.3.

F.2.2 Operator's station with reduced dimension of the cab

F.2.2.1 Exception to F.2.1

The following exceptions to F.2.1 stated in F.2.2.2 to F.2.2.5 can be accepted if the machine is intended to be used for underground working site not permitting full cab height.

:t:

F.2.2.2 Space envelope

The space envelope height of machines with cab can be reduced, but shall not be less than 900 mm above SIP.

F.2.2.3 Transmitted vibration

The seat shall comply with EN ISO 7096:2000. If for technical reasons this is not possible, seat of input spectral class EM 8 may be used.

F.2.2.4 Seat

If 5.4.1.3 cannot be met for space reasons, vertical adjustment according to ISO 11112:1995, Table 1, h1, is not required.

F.2.2.5 Alternative opening (emergency exit)

An alternative opening shall be provided. The rectangular dimension shall be not less than 470 mm D 600 mm.

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