Derby's Street Lighting PFI Contract

Ardleigh Close, Mickleover

Columns being removed on this road were:

Seq. No. Lamp Number Location Lamp Type Watt Isolation Point
1 60249 O/S NO 1 SXPL3 35  
2 60250 OS NOS 5/7 SXPL2 35  
3 97871 ON FP BTWN 9/12 SXPL3 35  

The following photographs were taken on Sunday, 21st March 2010. The two GEC Z9532s along here survived until the end. The outgoing columns on the road were gone by Friday, 26th March.

The first Z9532 received a replacement photocell on the 15th May 1996, followed by another one (and a lamp) on the 21st March 2005. This photocell is probably the Zodion SS3DR that is seen in the above pictures. The second Z9532 seems to have been a bit of a problem child in later years - it gained a new ballast and lamp on the 12th July 1999, a new photocell on the 28th July, another new ballast on the 21st August 2000, another new photocell and lamp on the 22nd October 2004, new photocell, lamp, ballast, ignitor and capacitor on the 11th July 2006, another new photocell on the 17th August, followed by a new lamp a day later, and then a replacement photocell on the 18th September. That photocell was then replaced on the 16th April 2008 with the Royce Thompson SC1000 seen in the pictures below. The lantern's final recorded maintenance visit was on the 4th June, when it received one last lamp.

A new column was installed at the start of the footpath:

The Stainton column supporting this GEC Z5698U is in need of a repaint (which I somehow don't think will happen now!), but apart from this, the column is in good condition for its approximate age of thirty years old.

It can just be seen that the Z5698U is not fitted with a photocell; this is due to the outgoing lighting on the footpath being group-switched from a single control point. This column received several reports of vandalism in its final few years of existence, with the control point gaining new photocells on the 4th March, 21st April, and the 9th May 2005, as well as on the 21st December 2006 - I suspect that this might have been due to adjacent tree branches knocking the control cell out of its NEMA socket, rather than actual vandalism occurring. The lantern was last re-lamped on the 4th December 2006.

 

Moving along the footpath in the direction of Roughton Close, another cell-less Z5698U is seen. Back on the 11th March 2005, I photographed this lantern (and the other lanterns on the circuit) dayburning. The cell attached to the control point lantern had developed a fault. This obviously then led to everything under its control remaining lit until it was replaced - a disadvantage of group switching.

The lanterns once again started dayburning on Friday, 26th March 2010. On this occasion, however, the control point column was not also illuminated. This possibly suggests that the feed cable for the slave lanterns was removed from the control point and temporarily installed in the replacement column in order to keep the lanterns operating (albeit permanently) until the services were transferred over to the new columns.

More changes had occurred by Sunday, 4th April 2010 - only one Z5698U continued to dayburn by then:

The other column was no longer connected; instead, the supply cables had been removed from the column and connected into two waterproof cable joints.

Two new cables then led from the joints into the new column:


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