|
|
|
|
|
|
|
|
|
Absolute block working
|
Means that only one train or a maximum of three on track machines with only one qualified employee in charge shall be in the block section at one time
|
|
|
Health surveillance, английский
Means the monitoring (including biological monitoring and medical assessment) of a person to identify changes in the persons health because of exposure to a hazardous substance.
Ballast, английский
Material, usually stone or aggregate, selected for placement on the roadbed for the purpose of holding the track in line laterally and longitudinally at a determined level and also to provide drainage.
|
|
|
|
|
|
|
