Module 1 Detailed Planning Flashcards
The classification of a group of items in decreasing order of annual dollar volume (price multiplied by projected volume) or other criteria. This array is then split into three classes, called A, B, and C. The A group usually represents 10 percent to 20 percent by number of items and 50 percent to 70 percent by projected dollar volume. The next grouping, B, usually represents about 20 percent of the items and about 20 percent of the dollar volume. The C class contains 60 percent to 70 percent of the items and represents about 10 percent to 30 percent of the dollar volume. The ABC principle states that effort and money can be saved through applying looser controls to the low-dollar-volume class items than to the high-dollar-volume class items. The ABC principle is applicable to inventories, purchasing, and sales.
ABC classification
Additional inventory above basic pipeline stock to cover projected trends of increasing sales, planned sales promotion programs, seasonal fluctuations, plant shutdowns, and vacations.
anticipation inventories
The number of hours a work center can be used, based on management decisions regarding shift structure, extra shifts, regular overtime, observance of weekends and public holidays, shutdowns, and the like.
available time
One-half the average lot size plus the safety stock, when demand and lot sizes are expected to be relatively uniform over time. The average can be calculated as an average of several inventory observations taken over several historical time periods; for example, 12-month ending inventories may be averaged. When demand and lot sizes are not uniform, the stock level versus time can be graphed to determine the average.
average inventory
A technique for calculating operation start dates and due dates. The schedule is computed starting with the due date for the order and working backward to determine the required start date and/or due dates for each operation.
back scheduling
A method of inventory bookkeeping where the book (computer) inventory of components is automatically reduced by the computer after completion of activity on the component’s upper-level parent item based on what should have been used as specified on the bill of material and allocation records. This approach has the disadvantage of a built-in differential between the book record and what is physically in stock.
backflush
A financial statement showing the resources owned, the debts owed, and the owner’s share of a company at a given point in time.
balance sheet
1)The capability of a system to perform its expected function. 2) The capability of a worker, machine, work center, plant, or organization to produce output per time period. The amount required represents the system capability needed to make a given product mix (assuming technology, product specification, etc.). As a planning function, both the amount available and the amount required can be measured in the short term (requirements plan), intermediate term (rough-cut plan), and longterm (resource requirements plan). Control is the execution through the I/O control report of the short-term plan. This can be classified as budgeted, dedicated, demonstrated, productive, protective, rated, safety, standing, or theoretical. 3) Required mental ability to enter into a contract.
capacity
The capability of a system or resource to produce a quantity of output in a particular time period.
capacity available
The function of establishing, measuring, monitoring, and adjusting limits or levels of capacity in order to execute all manufacturing schedules (i.e., the production plan, master production schedule, material requirements plan, and dispatch list). This is executed at four levels: resource requirements planning, rough-cut planning, requirements planning, and input/output control.
capacity management
The process of determining the amount of capacity required to produce in the future. This process may be performed at an aggregate or product-line level, at the master-scheduling level, and at the material requirements planning level.
capacity planning
The capacity of a system or resource needed to produce a desired output in a particular time period.
capacity required
The function of establishing, measuring, and adjusting limits or levels of capacity. In this context, the term refers to the process of determining in detail the amount of labor and machine resources required to accomplish the tasks of production. Open shop orders and planned orders in the MRP system are input to this, which through the use of parts routings and time standards translates these orders into hours of work by work center by time period. Even though rough-cut capacity planning may indicate that sufficient capacity exists to execute the MPS, this may show that capacity is insufficient during specific time periods.
capacity requirements planning (CRP)
The cost of holding inventory, usually defined as a percentage of the dollar value of inventory per unit of time (generally one year). This depends mainly on the cost of capital invested as well as costs of maintaining the inventory such as taxes and insurance, obsolescence, spoilage, and space occupied. Such costs vary from 10 percent to 35 percent annually, depending on type of industry. This is ultimately a policy variable reflecting the opportunity cost of alternative uses for funds invested in inventory.
carrying cost
The net flow of dollars into or out of the proposed project. The algebraic sum, in any time period, of all cash receipts, expenses, and investments. Also called cash proceeds or cash generated.
cash flow
A status awarded to a supplier that consistently meets predetermined quality, cost, delivery, financial, and count objectives. Incoming inspection may not be required.
certified supplier
1)A shipment that is handled by a common carrier. 2)The process of a supplier placing goods at a customer location without receiving payment until after the goods are used or sold.
consignment
A process by which a supplier is notified daily of actual sales or warehouse shipments and commits to replenishing these sales (for example, by size or color) without stockouts and without receiving replenishment orders. The result is a lowering of associated costs and an improvement in inventory turnover.
continuous replenishment
An accounting classification useful for determining the amount of direct materials, direct labor, and allocated overhead associated with the products sold during a given period of time.
cost of goods sold (COGS)
An inventory accuracy audit technique where inventory is counted on a cyclic schedule rather than once a year. A count is usually taken on a regular, defined basis (often more frequently for high-value or fast-moving items and less frequently for low-value or slow-moving items). Most effective systems require the counting of a certain number of items every workday with each item counted at a prescribed frequency. The key purpose of this process is to identify items in error, thus triggering research, identification, and elimination of the cause of the errors.
cycle counting
One of the two main conceptual components of any item inventory, this is the most active component. This depletes gradually as customer orders are received and is replenished cyclically when supplier orders are received. The other conceptual component of the item inventory is the safety stock, which is a cushion of protection against uncertainty in the demand or in the replenishment lead time.
cycle stock
1)Inventory-on-hand metric converted from units to how long the units will last. For example, if there are 2,000units on hand and the company is using 200 per day, then there are 10 days of supply. 2) A financial measure of the value of all inventory in the supply chain divided by the average daily cost of goods sold rate.
days of supply
An amount of inventory maintained between entities in a manufacturing or distribution network to create independence between processes or entities. The objective of decoupling inventory is to disconnect the rate of use from the rate of supply of the item.
decoupling inventory
Proven capacity calculated from actual performance data, usually expressed as the average number of items produced multiplied by the standard hours per item.
demonstrated capacity
Labor that is specifically applied to the good being manufactured or used in the performance of the service.
direct labor
Material that becomes a part of the final product in measurable quantities.
direct material
Inventory, usually spare parts and finished goods, located in the distribution system (e.g., in warehouses or in transit between warehouses and the consumer).
distribution inventory
A program through which specific quality and packaging requirements are met before the product is released. Prequalified product is shipped directly into the customer’s inventory. Dock-to-stock eliminates the costly handling of components, specifically in receiving and inspection, and enables product to move directly into production.
dock-to-stock
A type of fixed order quantity model that determines the amount of an item to be purchased or manufactured at one time. The intent is to minimize the combined costs of acquiring and carrying inventory. The basic formula is:
Square root of: 2AS/iC
where A = annual usage in units, S = ordering costs in dollars, i = annual inventory carrying cost rate as a decimal, and C = unit cost.
economic order quantity (EOQ)
A measurement (usually expressed as a percentage) of the actual output relative to the standard output expected. Efficiency measures how well something is performing relative to existing standards; in contrast, productivity measures output relative to a specific input (e.g., tons/labor hour). Efficiency is the ratio of (1) actual units produced to the standard rate of production expected in a time period, or (2) standard hours produced to actual hours worked (taking longer means less efficiency), or (3) actual dollar volume of output to a standard dollar volume in a time period. For example: (1) There is a standard of 100 pieces per hour and 780 units are produced in one eight-hour shift; the efficiency is 780 ÷ 800 converted to a percentage, or 97.5 percent. (2) The work is measured in hours and took 8.21 hours to produce 8 standard hours; the efficiency is 8 ÷ 8.21 converted to a percentage, or 97.5 percent. (3) The work is measured in dollars and produces $780 with a standard of $800; the efficiency is $780 ÷ $800 converted to a percentage, or 97.5 percent.
efficiency
The time associated with elements of a setup procedure performed while the process or machine is running.
external setup time
Those items on which all manufacturing operations, including final test, have been completed. These products are available for shipment to the customer as either end items or repair parts.
finished goods inventory
A lot-sizing technique in MRP or inventory management that will always cause planned or actual orders to be generated for a predetermined fixed quantity, or multiples thereof, if net requirements for the period exceed the fixed order quantity.
fixed order quantity
Traditionally, all manufacturing costs—other than direct labor and direct materials—that continue even if products are not produced. Although fixed overhead is necessary to produce the product, it cannot be directly traced to the final product.
fixed overhead
A form of independent demand management model in which an order is placed every n time units. The order quantity is variable and essentially replaces the items consumed during the current time period. If M is the maximum inventory desired at any time and x is the quantity on hand at the time the order is placed, then in the simplest model, the order quantity equals M minus x. The quantity M must be large enough to cover the maximum expected demand during the lead time plus a review interval. The order quantity model becomes more complicated whenever the replenishment lead time exceeds the review interval, because outstanding orders then have to be factored into the equation.
fixed reorder cycle inventory model
Inventory that is carried as a cushion to protect against forecast error.
fluctuation inventory
The category of expenses on an income statement that includes the costs of general managers, computer systems, research and development, etc.
general and administrative expenses (G&A)
Accounting practices that conform to conventions, rules, and procedures that are generally accepted by the accounting profession.
generally accepted accounting principles (GAAP)
The difference between total revenue and the cost of goods sold.
gross margin
A form of inventory buildup to buffer against some event that may not happen. Hedge inventory planning involves speculation related to potential labor strikes, price increases, unsettled governments, and events that could severely impair a company’s strategic initiatives. Risk and consequences are unusually high, and top management approval is often required.
hedge inventory
A financial statement showing the net income for a business over a given period of time.
income statement
The time associated with elements of a setup procedure performed while the process or machine is not running.
internal setup time
Material moving between two or more locations, usually separated geographically; for example, finished goods being shipped from a plant to a distribution center.
in-transit inventory
1)Those stocks or items used to support production (raw materials and work-in-process items), supporting activities (maintenance, repair, and operating supplies), and customer service (finished goods and spare parts). Demand for inventory may be dependent or independent.Inventory functions are anticipation, hedge, cycle (lot size), fluctuation(safety, buffer, or reserve), transportation (pipeline), and service parts.2)All the money currently tied up in the system. As used in theory of constraints, inventory refers to the equipment, fixtures, buildings, and so forth that the system owns—as well as inventory in the forms of raw materials, work-in-process, and finished goods.
inventory
When the on-hand quantity is within an allowed tolerance of the recorded balance. This important metric usually is measured as the percent of items with inventory levels that fall within tolerance. Target values usually are 95 percent to 99 percent, depending on the value of the item. For logistical operations (location management) purposes, it is sometimes measured as the number of storage locations with errors divided by the total number of storage locations.
inventory accuracy
A change made to an inventory record to correct the balance in order to bring it in line with actual physical inventory balances. The adjustment either increases or decreases the item record on-hand balance.
inventory adjustment
Inventory used to protect the throughput of an operation or the schedule against the negative effects caused by delays in delivery, quality problems, delivery of an incorrect quantity, and so on.
inventory buffer
The activities and techniques of maintaining the desired levels of items, whether raw materials, work in process, or finished products.
inventory control
The branch of business management concerned with planning and controlling inventories.
inventory management
Inventory models for the replenishment of inventory. Independent demand inventory ordering models include fixed reorder cycle, fixed reorder quantity, optional replenishment, and hybrid models, among others. Dependent demand inventory ordering models include material requirements planning, kanban, and drum-buffer-rope.
inventory ordering system
The number of times that an inventory cycles, or “turns over,” during the year. A frequently used method to compute inventory turnover is to divide the annual cost of sales by the average inventory level. For example, an annual cost of sales of $21 million divided by an average inventory of $3 million means that inventory turned over seven times.
inventory turnover
A cost accounting system in which costs are assigned to specific jobs. This system can be used with either actual or standard costs in the manufacturing of distinguishable units or lots of products.
job costing
This cost includes the product cost plus the costs of logistics, such as warehousing, transportation, and handling fees.
landed cost
1)A span of time required to perform a process (or series of operations). 2) In a logistics context, the time between recognition of the need for an order and the receipt of goods. Individual components of lead time can include order preparation time, queue time, processing time, move or transportation time, and receiving and inspection time.
lead time
A measure (usually expressed as a percentage) of satisfying demand through inventory or by the current production schedule in time to satisfy the customers’ requested delivery dates and quantities. In a make-to-stock environment, level of service is sometimes calculated as the percentage of orders picked complete from stock upon receipt of the customer order, the percentage of line items picked complete, or the percentage of total dollar demand picked complete. In make-to-order and design-to-order environments, level of service is the percentage of times the customer-requested or acknowledged date was met by shipping complete product quantities.
level of service
An accounting/financial term (balance sheet classification of accounts) representing debts or obligations owed by a company to creditors. Liabilities may have a short-term time horizon, such as accounts payable, or a longer-term obligation, such as mortgage payable or bonds payable.
liabilities