Final Report Lot 9: Public street lighting - Amper

Table 37: Input data for the materials extraction and production of the HPS 70W lamp
MATERIALS Extraction & Production Weight Category Material or Process
Description of component in g Click &select select Category first !
BULB_Envelope_Glass 35,33 7-Misc. 54-Glass for lamps
BULB_Stem tube_Glass 3,80 7-Misc. 54-Glass for lamps
BULB_Lead wires_Low carbon steel 2,00 3-Ferro 25-Stainless 18/8 coil
BULB_Tube_Si, B, Al, Na, K, Mg, Ca, Ba, -oxides 1,17 5-Coating 40-Cu/Ni/Cr plating
BULB_Getter_Zr, Al, Fe 0,14 4-Non-ferro 27-Al diecast
BURNER_PCA (Poly Crystallyne Aluminium Oxide) 2,47 4-Non-ferro 26-Al sheet/extrusion
BURNER_Amalgam_Hg, Na 0,02
BURNER_Electrode&Emittor_Tungsten&Ba,Y,W-oxides 0,29 4-Non-ferro
BURNER_Frit ring_Ca, Ba, Al-oxides 0,02 4-Non-ferro
BURNER_Niobium Tube 0,53 4-Non-ferro
LAMP BASE (E27)_Cap_Brass and glass-frit 9,4 4-Non-ferro 31-CuZn38 cast
LAMP BASE (E27)_Solder_Sn, Pb, Sb 1,50 6-Electronics 52-Solder SnAg4Cu0.5
LAMP BASE (E27)_Capping cement_CaCO3 1,1 7-Misc.
More than 96wt% of the materials are modelled in the environmental assessment, which
indicates that the environmental impact of the production phase is not largely underestimated.
Some remarks about these input data:
- Oxides of alkaline earth metals (Si, B, Al, Na, K, Mg, Ca, Ba) for the tube are modelled as
Cu/Ni/Cr plating. We assume that this parameter approaches better the reality than not
taking it into account. In the MEEUP database this material/process comes closest to the
mix of materials.
- For the production of amalgam (mercury and sodium, resp 0.015g Hg and 0.005g Na)
detailed data are not available. The efforts to include the impact of mercury in the
production phase do not outweigh the results since a rough assessment already shows that
the impact of the production phase is not significant compared to the use phase of a lamp.
- The production of the electrode and emitter (burner), the frit ring, the niobium tube and the
capping cement in the lamp base are not accounted for because data are not available. We
don’t expect that the environmental impact of these materials outweighs the negligible
weight share of these materials in the lamp.
- Similar to the HPM lamps the most important parts in terms of material composition are the
bulb (envelope and stem tube, together 70wt%) and the lamp base (20wt%).
The mercury content in the HPS 70W lamp is 0.015g (and 0.005g Na).
The table below gives the other inputs that refer to the production (manufacturing processes) of
the lamp. We assume no specific differences in the production parameters among the different
lamp types. Following the VHK case study we assume that for the production of 1 kg sheet
metal for lamps, 1.25 kg sheet metal is needed as input material (25% sheet metal scrap).
113