Inactive Total Small Business Set-Aside (FAR 19.5)

633 CES/CEF requires maintenance services on (111) 150 lb. Model 600 Wheeled Liquified Gas Fire Extinguishers. Maintenance procedures are outlined in Technical Order (TO) 13F4-4-121, Paragraphs 5-12 t... 633 CES/CEF requires maintenance services on (111) 150 lb. Model 600 Wheeled Liquified Gas Fire Extinguishers. Maintenance procedures are outlined in Technical Order (TO) 13F4-4-121, Paragraphs 5-12 through 5-15. 633 CES/CEF requires the inspection of the down tube and valve assembly solder in accordance with the new Time Compliance Technical Order (TCTO) 13F4-4-501, published on 31 March 2021. This inspection should be conducted during the 6-year maintenance procedures outlined in TO 13F4-4-121.