| Description of Asset |
Number of Years of Life Asset |
| A. |
Land owned under full title. |
Infinity. |
| B. |
Land held under lease |
|
| |
(a) |
for investment in the land |
The period of the lease, or the period remaining unexpired onthe assignment of the lease, as the case may be.
|
| |
(b) |
for cost of clearing site. |
The period of the lease remaining unexpired at the date ofclearing the site.
|
| C. |
Assets purchased new- |
|
| |
(a) |
Plant and machinery in generating stations, including plantfoundations-
|
|
| |
(i) |
hydro-electric |
Thirty-five |
| |
(ii) |
steam electric |
Twenty-five |
| |
(iii) |
diesel-electric |
Fifteen |
| |
(b) |
Cooling towers and circulating water systems |
Thirty. |
| |
(c) |
Hydraulic works forming part of a hydro-electric systemincluding-
|
|
| |
(i) |
dams, spillways, wires, canals, reinforced concrete flumes andsyphons
|
One hundred. |
| |
(ii) |
reinforced concrete pipe-lines an surge tanks, steel pipelines, sluice gates, steel surge tanks, hydraulic control valvesand other hydraulic works.
|
Forty. |
| |
(d) |
Buildings and civil engineering works of permanent charactermentioned above-
|
|
| |
(i) |
Officers and show-rooms |
Fifty. |
| |
(ii) |
containing thermo-electric generating plant |
Thirty. |
| |
(iii) |
containing hydro-electric generating plant, |
Thirty-five. |
| |
(iv) |
temporary erections such as wooden structures |
Five. |
| |
(iva) |
roads other than kacha roads |
One hundred. |
| |
(v) |
other |
Fifty |
| |
(e) |
Transformers, transformer kiosks, sub-section equipment andother fixed apparatus (including plant foundations)
|
|
| |
(i) |
transformers (including foundations) having a rating of 100kilovolt ampers and over
|
Thirty-five. |
| |
(ii) |
other |
Twenty-five. |
| |
(f) |
switchgear, including cable connections |
Twenty. |
| |
(i) |
Lightening arrestors- |
Twenty |
| |
(ii) |
Pole type |
Fifteen |
| |
(iii) |
Synchronous condensers. |
Thirty-five. |
| |
(g) |
Batteries. |
Ten |
| |
(h)(1) |
underground cables including joint boxes and disconnectingboxes
|
Forty |
| |
(2) |
cable duct system |
Sixty |
| |
(i) |
Overhead liens including support. |
|
| |
(i) |
lines on fabricated steel supports operating at nominalvoltages higher than 66 kilo-volts
|
Thirty-five |
| |
(ii) |
lines on steel supports operating at nominal voltages higherthan 13.2 kilovolts but not exceeding 66 kilovolts
|
Twenty-five |
| |
(iv) |
lines on treated wood supports |
Twenty |
| |
(j) |
Meters |
Fifteen |
| |
(k) |
Self-propelled vehicles |
Seven |
| |
(l) |
Static machine tools |
Twenty |
| |
(m) |
air conditioning plant |
|
| |
(i) |
State |
Fifteen |
| |
(ii) |
Portable |
Seven |
| |
(n)(i) |
Office furniture and fittings |
Twenty |
| |
(ii) |
office equipment |
Ten |
| |
(iii) |
Internal wiring, including fitting and apparatus |
Fifteen |
| |
(iv) |
Street-lights |
Fifteen |
| |
(o) |
Apparatus let on hire- |
|
| |
(i) |
other than motors |
Seven |
| |
(ii) |
motors |
Twenty |
| |
(p) |
Communications equipment- |
|
| |
(i) |
radio and high frequency carrier system |
Fifteen |
| |
(ii) |
telephone liens and telephone |
Twenty |
| D. |
Assets purchased secondhand and assets not otherwise providedfor in this table.
|
Such reasonable period as the Commission determines in eachcase having regard to there nature, age and condition of theasset at the time of its acquisition by the licensee.
|