Definition and characteristics of zones in the office building
Table -4: Zone Z1 (entrance area to the building) characteristics
| Parameters | Comment | Symbol | Value |
| Soil surface type | Marble | ra | 10-2 |
| Shock protection | None | PA | 1 |
| Loss by touch and step voltages | Yes | Lt | 2 x 10-2 |
| People potentially in danger in the zone |
|
|
4 |
Table -5: Zone Z2 (garden) characteristics
| Parameters | Comment | Symbol | Value |
| Soil surface type | Grass | ra | 10-2 |
| Shock protection | Fence | PA | 0 |
| Loss by touch and step voltages | Yes | Lt | 10-4 |
| People potentially in danger in the zone |
|
|
2 |
Table -6: Zone Z3 (archive) characteristics
| Parameters | Comment | Symbol | Value |
| Floor surface type | Linoleum | ru | 10-5 |
| Risk of fire | High | rf | 10-1 |
| Special hazard | Low panic | hz | 2 |
| Fire protection | None | rp | 1 |
| Spatial shield | None | KS2 | 1 |
| Internal power systems | Yes |
Connected to LV power line
|
- |
| Internal telephone systems | Yes |
Connected to telecom line
|
- |
| Loss by touch and step voltages | Yes | Lt | 10-5 |
| Loss by physical damage | yes | Lf | 10-3 |
| People potentially in danger in the zone | 20 |
Table -7: Zone Z4 (offices) characteristics
| Parameters | Comment | Symbol | Value |
| Floor surface type | Linoleum | ru | 10-5 |
| Risk of fire | Low | rf | 10-3 |
| Special hazard | Low panic | hz | 2 |
| Fire protection | None | rp | 1 |
| Spatial shield | None | KS2 | 1 |
| Internal power systems | Yes |
Connected to LV power line
|
- |
| Internal telephone systems | Yes |
Connected to telecom line
|
- |
| Loss by touch and step voltages | Yes | Lt | 8 x 10-5 |
| Loss by physical damage | yes | Lf | 8 x 10-3 |
| People potentially in danger in the zone | 160 |
Table -8: Zone Z5 (computer centre) characteristics
| Parameters | Comment | Symbol | Value |
| Floor surface type | Linoleum | ru | 10-5 |
| Risk of fire | Low | rf | 10-3 |
| Special hazard | Low panic | hz | 2 |
| Fire protection | None | rp | 1 |
| Spatial shield | None | KS2 | 1 |
| Internal power systems | Yes |
Connected to LV power line
|
- |
| Internal telephone systems | Yes |
Connected to telecom line
|
- |
| Loss by touch and step voltages | Yes | Lt | 7 x 10-6 |
| Loss by physical damage | yes | Lf | 7 x 10-4 |
| People potentially in danger in the zone | 14 |
Table -9: Collection area of structure and lines
| Symbol | Value (m2) |
| Ad | 2.7 x 104 |
| Al(Power) | 4.5 x 103 |
| Ai(Power) | 2 x 105 |
| Al(Telecom) | 1.45 x 104 |
| Ai(Telecom) | 3.9 x 105 |
Table -10: Expected annual number of dangerous events
| Symbol | Value (1/year) |
| Nd | 1.1 x 10-1 |
| NL(Power) | 1.81 x 10-2 |
| NI(Power) | 8 x 10-1 |
| NL(Telecom) | 5.9 x 10-2 |
| NI(Telecom) | 1.581 |