Derby's Street Lighting PFI Contract

Duke Street, Darley Ward

The equipment being removed consisted of the following items in 1997:

Seq. No. Lamp Number Location Lamp Type Watt Isolation Point
1 27184 OPP SOWTER RD SONE 150 Y
2 27185 ON GREEN AREA SONE 150  
3 27186 OS NO 18 SXPL2 35  
4 27187 OS NOS 22/24 SXPL2 35  
5 27188 OS NO 26 SXPL2 35  
6 27189 ADJ NO 28 SXPL2 55  
7 27190 OS SCRAP YARD SXPL2 55 Y
8 27191 REAR NO 38 SXPL2 35  
9 27192 FP RR RIVERMEAD HS SXPL2 35  
10 27193 FP OS RIVERMEAD HS SXPL2 35  
11 113234 OS RIVERMEAD HS SOXL 35  
12 27194 FP OS RIVERMEAD HS SXPL2 35  
13 27195 FP OS RIVERMEAD HS SXPL2 35  
14 113235 REAR R/MEAD HOUSE SOXL 35  
100001 106888 NEARLY OPPOSITE SOWTER RD FL 8  
200001 107055 JUNC HANDYSIDE ST N/A N/A Y

The following photographs were taken on Saturday, 19th March 2011.

Two Thorn Alpha 8 lanterns attached to 8 m tubular steel columns were first from St Mary's Bridge. The replacement columns are 6 m in height.

 

The first lantern was group-switched from elsewhere; hence, the lack of a photocell control.

 
 
 

The second lantern was individually switched, however - a Royce Thompson SC1000 was fitted.

 

A nearby footpath joined the road at this point; the lighting being located on the record for Britannia Court.

1 91081 OPP NO 14 SONE 0 70

The record for this lamp suggests that a 70 W SON lantern was installed here in 1997; however, the installation now supported a Philips FGS 103 35 W SOX lantern; the Stainton hinged column still appeared reasonably new, and was perhaps a later replacement.

 

A Royce Thompson Oasis 2000 70 Lux photocell was fitted to the FGS 103.

 

The next outgoing column on the footpath was older, but it too had had its original lantern replaced:

2 91082 FP REAR OF NO37 SONE 0 70

 

A Philips Iridium was attached to the column's spigot. This lantern pre-dates the PFI; it being fitted in place of a GEC Z5699 when the supply cable was changed from being group-switched to being permanently live in 2006 in order to supply some CCTV cameras. The Z5699s were not fitted with their own photocells; with the result that they all operated continuously after the group-switching control was decommissioned. One was saved into my collection after these individually-switched Iridiums were fitted instead.

 

Returning to Duke Street, the columns now decreased in height from 8 m to 5 m. A top-entry Thorn Beta 5 was fitted here.

 

This column is likely to have once supported a side-entry 80 W MBF lantern, but was later converted to the far more energy efficient SOX lighting; the side-to-top-entry converter elbow being fitted at the same time.

 

Another column around the corner also accommodated an Iridium; this replacing a SOX lantern in the mid-2000s, in response to antisocial behaviour in the area after nightfall.

 

I dislike the appearance of this installation - the size of the Iridium looks out of proportion to the rest of the column.

 

A nearby 6 m column had also had its lantern (a 55 W SOX, but would have been a 125 W MBF installation when new) replaced with an Iridium.

 

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