Retrotec USACE - Manual (Page 107)

Energy Conservation Measures 85
TABLE 8. ENERGY WASTE AND INEFFICIENCY IN PROCESSES.
Problem description
Waste/
ineffi ciency Reference/
appendix
Painting Operating paint booth ventilation system when not painting Waste D7.1.1
Painting when item to be painted is at improper temperature Ineffi ciency D7.1.2
Operating paint booths under positive pressure, resulting in paint fumes in
adjacent spaces
Ineffi ciency D7.1.3
Failure to recirculate more than 70% of oven-heated air Ineffi ciency D7.1.4
Use of high-pressure spray guns Ineffi ciency D7.1.5
Operations that are not enclosed, requiring excessive ventilation and move-
ment of paint fumes into adjacent spaces
Waste D7.1.6
Plating Air movement greater than 0.51 m/sec (100 fpm) near exhaust hoods Ineffi ciency D7.2.1
Operating exhaust systems when no plating operations are occurring and at
other times when not required
Waste D7.2.2
Hot plating tanks having a surface temperature greater than 125 °F Waste D7.2.3
Using single-side exhaust hood on tanks 4 ft wide or wider Ineffi ciency D7.2.4
Exhausting clean exhaust greater than 93 °C (200 °F) Waste D7.2.5
Uncovered heated tanks over 60 °C (140 °F) Waste D7.2.6
Machining Turning (lathe), drilling, milling, and grinding machines do not have local ex-
hausts or process enclosures
Ineffi ciency D7.3.1
Compressed air leaks Waste D7.3.2
Lack of task lighting and lighting levels greater than 323 lux (30 footcandles) Waste D7.3.3
Welding Using continuous operating welding exhaust Waste D7.4.1
Using stationary welding hoods Ineffi ciency D7.4.2
Excessive welding fume generation Ineffi ciency D7.4.3
Vacuum
systems Operating at lower pressure than required Ineffi ciency D7.5.1
Excessive air bleed-in through leaks Waste D7.5.2
Assembly Lack of task lighting and lighting levels greater than 323 lux (30 footcandles) Ineffi ciency D7.6.1
Foundry Running exhaust systems when not required Waste D7.7.1
Outside furnace temperature exceeding 52 °C (125 °F) Waste D7.7.2
Use of oversized equipment to produce small numbers of parts (waste) Waste D7.7.3
(Continued)