Derby's Street Lighting PFI Contract
Markeaton Street, City Centre
The equipment being removed consisted of the following items in 1997:
Seq. No. | Lamp Number | Location | Lamp Type | Watt | Isolation Point |
1 | 30834 | ADJ NO 154 NUNS ST | SXPL3 | 35 | |
2 | 30835 | OS NO 27 | SXPL2 | 35 | |
3 | 30836 | OS NO 40 | SXPL2 | 35 | |
4 | 30837 | OPP NO 58 | SXPL2 | 35 | |
5 | 30838 | OS NO 72/74 | SXPL2 | 35 | |
6 | 30839 | OS NO 107 | SXPL2 | 35 | |
7 | 30840 | OPP NO 115 | SXPL2 | 35 | |
8 | 30841 | OPP NO 129 | SXPL3 | 35 | |
9 | 30842 | OPP MARKEATON MILL | SXPL2 | 35 | |
10 | 30843 | O/S NOS 137/139 | SXPL2 | 35 | |
11 | 30844 | OS NOS 145/147 | SXPL2 | 35 | |
12 | 31460 | OS NOS 153/155 | SXPL2 | 35 | |
13 | 31461 | OS NOS 159/161 | SXPL2 | 35 | Y |
14 | 31462 | ADJ GAS GOVERNOR | SXPL1 | 35 | |
15 | 31463 | OS ALLOTMENTS | SXPL1 | 35 | |
16 | 31464 | NEAR ALLOTMENTS | SXPL2 | 35 | |
17 | 31465 | NONE STATED | SXPL1 | 35 | |
18 | 31466 | NONE STATED | SXPL1 | 35 | |
19 | 31467 | ADJ NORTH LODGE | SXPL1 | 35 | |
20 | 31468 | OS NORTH LODGE | SXPL2 | 55 | |
21 | 31469 | FP OS NORTH LODGE | SXPL2 | 35 | |
22 | 31470 | FP OS WOOD | SXPL1 | 35 | |
23 | 31471 | FP OS WOOD | SXPL2 | 35 | |
24 | 31472 | FP OS WOOD | SXPL2 | 35 | |
25 | 31473 | FP OS WOOD | SXPL2 | 35 | Y |
26 | 31474 | FP OS LAKE | SXPL1 | 35 | |
27 | 98485 | FP OS LAKE | SXPL2 | 35 | |
28 | 84899 | F/P OS LAKE | SXP2 | 35 | |
29 | 84900 | CENTRE OF F/BRIDGE | SXPL2 | 35 | |
30 | 106531 | JUNC MERCHANT ST | FL | 8 | |
31 | 113492 | DESIGN | FL | 8 | |
32 | 113490 | DESIGN | FL | 8 | |
33 | 113491 | DESIGN | FL | 8 |
The following photographs were taken on Sunday, 16th January 2011. Only the lighting from sequences 20 to 28 (above) is covered on this page.
A 6 m column fitted with an SGS 252-size Iridium was set to be replaced with...a 6 m column fitted with an SGS 252-size Iridium! The outgoing column used to be fitted with a 55 Watt SOX lantern.
The outgoing installations on the adjacent footpath all consisted of Abacus 5 m base-hinged tubular steel columns; all supporting Thorn Beta 5 35 Watt SOX lanterns. The replacement columns are all 6 m Mallatite mid-hinged tubular steel products.
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The replacement Iridium lanterns are of the 'open reflector' variety; this has led to an internal component falling into the lantern's bowl.
This Beta 5 still looked relatively new, although an airgun pellet hole in the lantern's bowl had resulted in a large amount of detritus gathering around the lamp; significantly reducing the lantern's useful output.
The second Beta 5 sported a deeper bowl and was in a much cleaner internal condition.
The path then forked, although both sections were lit.
The outer bulb of the lamp fitted in this Beta 5 was completely black:
This Beta 5's bowl was also in need of cleaning - the new lighting here ought to brighten up the footpath considerably! A photocell was not yet fitted to the replacement lantern at the time of photographing.
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The first Beta 5 on the right-hand side of the fork was another that sported a deep bowl.
The lantern appeared to be slightly damaged, as evidenced by its tilt on the bracket. Although the bowl may have been of polycarbonate construction (due to its slight yellow tinge), it may actually have been another acrylic bowl that simply required cleaning.
The following Beta 5's bowl had been secured using a length of insulation tape.
The new column was still awaiting its lantern at this time.
I had previously photographed the next installation in 2006, when the lantern had been vandalised.
The lantern wasn't in the best of conditions five years later - its taped-on bowl was broken, and the lamp did not work at night. Given that the column was set to be replaced almost imminently at this stage, repairs are now highly unlikely.
Thanks to the proximity of the adjacent footbridge, this column (and its replacement) could be seen from a rather unusual (unless you have access to a platform vehicle or are exceptionally tall!) angle.
Beginning in June 2017, a number of lanterns in Derby City Centre that were fitted new as part of the PFI replacement schemes a few years previously were replaced with OrangeTEK 'AriaLED' lanterns, as an energy-saving measure. The example seen immediately above saw such an exchange occur.
Only 10 LEDs are employed in this lantern; however, as the modules that contain them are configured for 20 LEDs, the front section contains 10 blank positions.
Once again, the adjacent bridge proved useful in photographing the lantern from a higher position than would be possible ordinarily.
This above-lantern view reveals a small thumbscrew on the top of the canopy.
An identification label exists behind the NEMA socket.
The Royce Thompson SC1000/SAV photocell fitted to the Iridium employed here previously has been re-used with this lantern.
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