| Description of asset |
Number of years of life of asset |
| (1) |
(2) |
| 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.
|
| |
(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) dam, spillways, weirs, canals, reinforced concrete flumesand syphons.
|
One hundred. |
| |
|
(ii) reinforced concrete pipe line and surge tanks steel pipelines, sluice gates, steel surge tanks, hydraulic control valvesand other hydraulic works.
|
Forty. |
| |
(d) |
Building and civil engineering works of a permanentcharacter, not mentioned above-
|
|
| |
|
(i) Office and showrooms |
Fifty. |
| |
|
(ii) Containing thermoelectric generating plant |
Thirty. |
| |
|
(iii) Containing hydroelectric generating plant |
Thirty five. |
| |
|
(iv) Temporary erections such as wooden structures. |
Five. |
| |
|
(v) Roads other than katcha roads. |
One hundred. |
| |
|
(vi) Others. |
Fifty. |
| |
(e) |
Transformers, transformers kiosks, sub-station equipment andother fixed apparatus (including plan foundation)-
|
|
| |
|
(i) Transformers (including foundation) having a rating of100 kilovolt amperes and over)
|
Thirty five. |
| |
|
(ii) Others |
Twenty five. |
| |
(f) |
Switchgear, including cable connections |
Twenty. |
| |
(g) |
Lightening arrestors- |
|
| |
|
(i) Station type |
Twenty. |
| |
|
(ii) Pole type |
Fifteen. |
| |
|
(iii) Synchronous condensers |
Thirty five. |
| |
(h) |
Batteries |
Ten. |
| |
(i) |
(i) Underground cables including joint boxes anddisconnecting boxes.
|
Forty. |
| |
|
(ii) Cable duct system. |
Sixty. |
| |
(j) |
Overhead lines including support- |
|
| |
|
(i) Lines on fabricated steel support-operating at nominalvoltages higher than 66 kilovolts.
|
Thirty five. |
| |
|
(ii) Lines on steel supports-operating at nominal voltageshigher than 13.2 kilvolts but not exceeding 66 kilovolts.
|
Thirty. |
| |
|
(iii) Lines on steel or reinforced concrete supports. |
Twenty five. |
| |
|
(iv) Lines on treated wood supports. |
Twenty. |
| |
(k) |
Meters |
Fifteen. |
| |
(l) |
Self-propelled vehicles |
Seven. |
| |
(m) |
Static-machine tools |
Twenty. |
| |
(n) |
Air conditioning plant- |
|
| |
|
(i) Static |
Fifteen. |
| |
|
(ii) Portable |
Seven. |
| |
(o) |
(i) Office furniture and fittings |
Twenty. |
| |
|
(ii) Office equipment |
Ten. |
| |
|
(iii) Internal wiring including fittings and apparatus. |
Fifteen. |
| |
|
(iv) Street-light fittings |
Fifteen. |
| |
(p) |
Apparatus let on hire- |
|
| |
|
(i) Other than meters |
Seven. |
| |
|
(ii) Meters |
Twenty. |
| |
(q) |
Communications equipment- |
|
| |
|
(i) Radio and high frequency carrier system. |
Fifteen. |
| |
|
(ii) Telephone lines and telephone. |
Twenty. |
| D. |
Assets purchased second hand and assets not otherwiseprovided for in this table.
|
Such reasonable period as Government determines in each casehaving regard to the nature of the asset at the time of itsacquisition by the licensee.
|