PIMS, Inc., has been manufacturing plumbing equipment since 1999. Because of the depressed economic conditions, component parts are assembled in batch runs. At any given time, each level of production has several partially assembled components. Given the following assembly and inventory information, plan the order releases necessary to assemble 400 oil leak valves for period 10.

Production of the valve begins with the base. The base is placed and secured in a housing. Ball bearings are then installed on opposing sides of the base housing. The rear base cover is fitted on and held while the front cover is secured with U-bolts. Next, the anchor assembly is connected. Finally, two sets of brackets are screwed on and the oil leak valve is checked before shipping.

MASTER FILE ITEM DESCRIPTION LEAD TIME ON ORDER SCHEDULED RECEIPT DATE ON HAND LOT SIZE (MULTIPLES) Oil Leak Valve 1 0 I Brackets 2 30 25 Shield Valve 1 40 1 Anchor assembly 3 50 Period 2 90 25 Sealing Valve 1 10 1 U-bolts 3 105 50 Front cover 2 40 50 Rear cover 2 2 50 Perod 1 0 50 Capping Valve 1 0 1 Ball bearing 3 3 50 Period 1 90 50 Back flush Valve 1 50 1 Base 3 3 25 Period 2 40 25 Base housing 4 25 Period 2 35 25