General Specifications for NRG COMPANY, INCORPORATED Chain and Flight Skimmer Equipment Part 1 - General   Scope of Work  Shop Painting   Design Criteria  Power Supply   Experience Qualifications  Spare Parts   Bolts and Anchor Bolts     Surface Preparation   Part 2 - Products   Fiberglass Flight Skimmer Blades "Click Here"   Skimmer Chain and Attachment Links   Wear Shoes   Filler Blocks   Skimmer Sprockets Alternate Idler Sprockets - Static Shaft System     Shafts   Bearings   Return Tracks   Wear Strips   Scum Beach   Drive Unit   Drive Chain