L4M7 Sample Questions Answers

Explanation

For JIT manufacturing to succeed, companies must have steady production, high-quality workmanship, glitch-free plant machinery, and reliable suppliers.

JIT production systems cut inventory costs because manufacturers do not have to pay storage costs. Manufacturers are also not left with unwanted inventory if an order is canceled or not fulfilled.

Explanation

Master production schedule (MPS) plans items that have “direct” demand, or “independent de-mand.” With independent demand, the demand comes from sales orders, service orders, or fore-casts, and the demand comes directly from customer—or forecasted—requirements. It is the list that provides the timing of the production schedule and shows how much each machine can produce, how many shifts are used, etc.

A bill of materials (BOM) is a comprehensive inventory of the raw materials, assemblies, subas-semblies, parts and components, as well as the quantities of each, needed to manufacture a product.

Explanation

Material requirement planning (MRP) is a production planning and material (inventory) control system used in manufacturing. Objectives of MRP are to ensure materials are available for production while minimising inventory and to plan production and procurement activities.

Bill of materials (BOM) is an important component of MRP. BOM is also known as product struc-turer. This lists all the items that comprise each assembly and sub-assembly that make up the final product or end item. Therefore, MRP is commonly used to manage dependent demand stock.

Explanation

Fixed-Time Period System (or Periodic Review system) is the inventory management system in which inventory is checked in fixed time periods, T, and the quantity ordered varies. The system also contains a target inventory level, R, which is restored when order received. The order quantity is calculated as:

Q = R – IP

where: Q = order quantity

R = target inventory level

IP = inventory position

Inventory position (IP) is equal to inventory on-hand plus quantity on order minus backorder (if any)

The order quantity varies because the inventory position at each review point differs from each other.

Diagram Description automatically generated with medium confidence

LO 2, AC 2.3

Explanation

All risk management processes follow the same basic steps, although sometimes different jargon is used to describe these steps. Together these 5 risk management process steps combine to deliver a simple and effective risk management process.

Step 1: Identify the Risk. You and your team uncover, recognize and describe risks that might affect your project or its outcomes. There are a number of techniques you can use to find project risks. During this step you start to prepare your Project Risk Register.

Step 2: Analyze the risk. Once risks are identified you determine the likelihood and consequence of each risk. You develop an understanding of the nature of the risk and its potential to affect pro-ject goals and objectives. This information is also input to your Project Risk Register.

Step 3: Evaluate or Rank the Risk. You evaluate or rank the risk by determining the risk magni-tude, which is the combination of likelihood and consequence. You make decisions about whether the risk is acceptable or whether it is serious enough to warrant treatment. These risk rankings are also added to your Project Risk Register.

Step 4: Treat the Risk. This is also referred to as Risk Response Planning. During this step you assess your highest ranked risks and set out a plan to treat or modify these risks to achieve acceptable risk levels. How can you minimize the probability of the negative risks as well as enhancing the opportunities? You create risk mitigation strategies, preventive plans and contingency plans in this step. And you add the risk treatment measures for the highest ranking or most serious risks to your Project Risk Register.

Step 5: Monitor and Review the risk. This is the step where you take your Project Risk Register and use it to monitor, track and review risks.

Explanation

ABC analysis is applied to stock and its management. It is based loosely on the Pareto principles, better known as 80/20 rule. Pareto principle is the theory that 80% of outcome results from 20% of inputs. For example, 80% of sales are to the top 20% of customers; 80% of spend on inventory is accounted for by the top 20% of stock items.

The ABC concept is based on Pareto's law. The following steps are carried out for the ABC analy-sis.

- Step 1: Compute the annual usage value for every item in the sample by multiplying the annual requirements by the cost per unit.

- Step 2: Arrange the items in descending order of the usage value calculated above.

- Step 3: Make a cumulative total of the number of items and the usage value.

- Step 4: Convert the cumulative total of the number of items and usage values into a percentage of their grand totals.

- Step 5: Draw a graph connecting cumulative % items and cumulative % usage value. The graph is divided approximately into three segments, where the curve sharply changes its shape. This indicates the three segments A, B and C.

LO 2, AC 2.1

Explanation

Economic order quantity (EOQ) was developed in 1913 by Ford W. Harris and has been refined over time. The formula assumes that demand, ordering, and holding costs all remain constant. The EOQ minimizes the total annual inventory cost.

EOQ formula is as follow:

LO 2, AC 2.3

Explanation

Safety stock is the stock held as a contingency or insurance against disruption or unexpected de-mand. Holding safety stock reduces the risks of stockouts, when an organisation is unable to meet an order or continue production due to lack of finished goods or input materials.

For single items, an extra investment in inventory (higher levels of safety stock) will always in-crease customer service levels. Conversely, higher service levels imply larger quantities of safety stocks and an increased investment in inventory. (Procurement and Supply Chain Management - 9th Edition)

However, high levels of safety stocks also increase the inventory cost. There must be a balance between inventory costs and customer service. Thus, calculating the should-be safety stock based on a determined service level has long been recommended by many professionals.

Explanation

ISO 18602:2013 is about Packaging and the environment — Optimization of the packaging system. ISO 18602:2013 specifies requirements and a procedure for assessment of packaging to ensure that the weight or volume of its material content is optimized consistent with the functions of packaging. This is one of several options for reducing the impact of packaging on the environment.

It also provides methodologies and procedures for

- determining the amount and minimization of substances or mixtures hazardous to the environ-ment, and

- determining the amount of four heavy metals (lead, cadmium, mercury, hexavalent chromium) in packaging.

The optimum balance in this standard weighs the environmental impact of losses that may happen with no packaging or inadequate packaging against the environmental impact from excess packag-ing.

The process for packaging design, including material selection, is not part of ISO 18602:2013.

The procedure for applying ISO 18602:2013 is contained in ISO 18601.

Explanation

Purchase order lead time (POLT) refers to the number of days from when a company places an order for production inputs it needs, to when those items arrive at the manufacturing plant.

LO 2, AC 2.3

Explanation

Tote box is the reusable storage box. These can be open or have lids or flaps to close them and come in a large variety of sizes and weight loadings.

A tote is ideal for holding and hauling items such as: tools, fasteners, bark dust, dry cement, cords, wires, smaller boxes,...

Pallets are the platform structures designed to support a load and be lifted using the forks (typically seen on forklift trucks and other equipment). These are in a variety of standard sizes and can be made of many materials including plastics, resin, board or timber. Pallets are not containers, but support platforms.

Bar racks are designed to store bars and pipes

Stock cages are available in many sizes and can hold single items or groups of items

Explanation

The main improvements from ERP to ERP II are the following:

- ERP II is web enabled as compared to Conventional ERP Which is not.

- ERP is restricted to provide selected exhaustive or rigorous or wide-spread coverage in its mod-ules. But as compared to ERP, ERP II provides the true and accurate blend of the macro and the micro and affords customers with curative actions/measures after identifying the slip-up/error or fault;

- ERP was embattled more headed for manufacturing or industrialization and the dilemma or difficulty is conquer in ERP II by endowing clarification for all kind of industries and sectors.

- ERP is not in the position or could not possibly integrate/incorporate diverse functions from di-verse departments/divisions but ERP II could possibly do so as well as from different industries as compared to conventional ERP.

- For WEB and WAP connectivity ERP II grip CRM and SCM Functionalities.

- ERP II be obliged the function and purpose to an external/outdoor one and smooth the progress of better networks than remaining as internal/interior application.

Explanation

Raw materials are basic input materials - they are only processed limitedly or have not been pro-cessed at all. Their values are equal to acquisition cost and are the lowest value of stock held.

Secondary components are the products that are combined with others to produce the finished goods. They are acquired in the processed state. Their value is higher than raw materials, but still at acquisition cost.

Work in progress is the stock part-way through manufacture that has not been finished. It is typically not completed yet, so it doesn't have full value. But the costs of processing already carried out makes it more valuable than materials and components.

Finished goods are completed and ready to be used or sold. Finished goods are the most expensive and need to be stored in good conditions.

Explanation

The most common subjective forecasting techniques include the following:

- Market surveys

- Employee surveys

- Expert knowledge (Delphi method is a method using expert knowledge)

- Test marketing

Cycle counting is a periodic analysis of inventory in a storage location which is conducted through the counting of samples instead of physically counting the entire inventory available, so as to quickly have an accurate estimate of the inventory available without causing a stop to the day to day working as is the case with physically counting every unit.

The Pareto principle (also known as the 80/20 rule, the law of the vital few, or the principle of fac-tor sparsity) states that, for many events, roughly 80% of the effects come from 20% of the causes.

Weighted moving averages assign a heavier weighting to more current data points since they are more relevant than data points in the distant past. The sum of the weighting should add up to 1 (or 100 percent).

Explanation

Fixed assets may be sold anytime during their useful life. This gives rise to the need to derecognize the asset from balance sheet and recognize any resulting gain or loss in the income statement.

The accounting for disposal of fixed assets can be summarized as follows:

- Record cash receive or the receivable created from the sale:

Debit Cash/Receivable

- Remove the asset from the balance sheet

Credit Fixed Asset (Net Book Value)

- Recognize the resulting gain or loss

Debit/Credit Gain or Loss (Income Statement)

Example

ABC LTD purchased a machine for $2000 on 1st January 2001 which had a useful life of 5 years and an estimated residual value of $500. The machine was being depreciated on straight line basis. However, ABC LTD decided to sell the asset on1 January 2003 for $1500 in order to raise cash for the purchase of a new machine.

The disposal of the fixed asset will be recorded as follows:

Record cash received or the receivable arising from the sale:

Debit Cash $1,500

Remove the asset from the balance sheet

As a fixed asset is recognized in the balance sheet at the Net Book Value (i.e. Cost less Accumulated Depreciation), the machine will be removed from the accounts of ABC LTD in two parts:

First, the Machine Cost must be removed by crediting the ledger:

Credit Machine Cost $2,500

Second, the Accumulated Depreciation in respect of the machine must be removed by debiting the ledger:

Debit Accumalated Depreciation $600*

*Accumulated Depreciation: (2000 - 500)/5 x 2 Years

The combined effect of the above two transactions would be to remove the machine's net book value of $1400 (2000 - 600) from the balance sheet.

Recognize the resulting gain or loss on the sale of machine

ABC LTD received $1500 for an asset with a balance sheet worth of $1400. It therefore earned a gain of $100. The gain will be recorded as follows:

Credit Gain on Disposal $100

Explanation

The net requirements are worked out using the following equation:

Net requirements = Total requirements - Available inventory

Where:

Total requirements = Gross requirements

Available inventory = Inventory on-hand + Units on-order

In the other words: Net requirements = Gross requirements - Inventory on-hand - Units on-order

Inventory on-hand is also known as Inventory level, whereas Units on-order can be called Scheduled receipt.

Explanation

Reorder point is the point either in time or in a process when the next order should be placed.

Explanation

Materials that will not easily deteriorate, are generally stored in open or fairly covered areas (stockyard). The materials are usually in bulk, like steel plates or coils casting, timber coal, steel barrels, cable drums, piping, lampposts, lorries, etc.

Stockyards are open or semi-covered areas that are used for the following:

- Bulk loose or packaged materials

- Bulky or oversized items that may be difficult to move inside

- Materials that may require specialised handling, loading or unloading

Below image shows the example of a stockyard that stores loose coal and its handling system.

LO 1, AC 1.1

Explanation

VACUUM LIFTER uses the vacuum pad which attaches itself to a product. The suction force al-lows the product to be lifted (and rotated and placed). Vacuum lifters are used for moving and positioning glass sheets, but are also seen lifting boxes, plastic sacks, sheets of building materials and pipework. Some models feature hydraulic arms which allow easy movement of the lifted load. The lifting system will have a number of sucker pads and vacuum capability which determines the maximum weights and largest items that can be lifted.

DOLLY consists of stack and sets of wheels (either casters or rollers) under the stack that allow the dolly and the heavy object on top of it to move easily and smoothly. For moving in a straight line, rollers is ideal. If you want to move manoeuvrability, dolly with sets of casters will let you swivel and turn.

SACK TRUCK (hand truck) is an L-shaped box-moving handcart. It comprises a small base plat-form with two wheels at the base and a larger vertical structure. A small ledge to set objects on flat against the floor when the sack truck is upright. When moving, the truck and object are then tilted backward based on the vertical structure until the weight is balanced over the large wheels, making otherwise bulky and heavy objects easier to move.

PALLET STACKER is designed to lift and stack pallets. This one is fully mobile so can move easily around the warehouse. An operator would typically sit or stand while driving like a counter-balanced, reach or straddle lift truck.

LO 1, AC 1.3

Explanation

The design of a building should consider the advantages of natural light as this can reduce the cost of artificial lighting and improve the environmental performance of the building. Daylight entering the building can also help reduce heating costs. Unfortunately some stocks react badly to direct sunlight, and some stock reacts badly to extreme of temperature or may require a specific temperature for storage. Some stock may require a warmer temperature than the ambient temperature and other stocks may require cooler temperature. For example, fabric and garment are sensitive to direct sunlight as ultraviolet light catalyses a reaction between the water present in all fabrics and atmospheric oxygen to create hydrogen peroxide. This is a bleaching agent and breaks down the chemical bonds that give dyes their colour.

Explanation

A lease is a contractual arrangement calling for the lessee (user) to pay the lessor (owner) for use of an asset. Property, buildings and vehicles are common assets that are leased. Industrial or business equipment is also leased. Since the lessee does not own the asset, it is not responsible for disposing the assets, and therefore, disposal costs are not attributable to the lessee. The lessee usually incurs rentals and operating costs. Finally, a company should treat the lease the same as other contracts, which they must qualify the supplier.

Explanation

JIT, often referred to as the Toyota production system (TPS), originated in Toyota’s manufacturing plants in Japan in the early 1970s. It was first introduced by the organisation's owner, Taiichi Ohno. The prime goal of JIT is the achievement of zero inventories.

The just-in-time objectives of eliminating waste can be summarised in the 'five zeros: zero defects, zero set-up times, zero inventories, zero handling and zero lead times.

Explanation

Temporary warehousing (or 'Very short-term warehousing') is offered in the market where organ-isation makes their requirements for space open online to offers or bids for available space. This appears to be an emerging market and service providers in the UK and USA typically quote a price per pallet per week with some also requiring a 'transaction fee' for movements of each pallet in and out.

Consignment stocking is a facility offered by a supplier to a buyer to allow a delivery of stock to the buyer with payment only after it is used or sold to a customer.

Double-deep pallet racking and carousel-style storage are two tools that leverage space within a warehouse:

Double-deep pallet rack

Carousel style storage

Explanation

According to L4M7 study guide, acquisition costs in procurement are the costs associated with the activities involved in a purchase. A buying organisation incurs acquisition costs in low-value purchases as well as high-value purchases. The following purchases tend to have lower acquisition costs:

- Straight re-buy from a current supplier

- Purchase of standard catalogued products

Otherwise, any purchases of high value, high-risk items generally require greater attention of buying organisation and thus, they are likely to have higher acquisition costs. Spot purchase of a technically complexed machinery, Purchase of ERP system and Procurement of construction projects are examples of high-value, high-risk purchases.

Explanation

Minimum open aisle width for standard counterbalance forklift is 10.5-13.1 ft. You can look at the minimum aisle width for different equipment here, or calculate yourself with an instruction here.

LO 1, AC 1.3

Explanation

The triple bottom line is a sustainability framework that examines a company’s social, environment, and economic impact (or People, Planet, Profit).

Explanation

In inventory management, service level is the expected probability of not hitting a stock-out during the next replenishment cycle or the probability of not losing sales.

Key performance indicators (KPIs) can be used to analyse data based on performance objectives and set actionable goals for improvement. KPIs can be developed in conjunction with suppliers as well as others, and can be used to measure the essential elements of the process.

Safety stock is the amount of inventory a business needs to have to achieve a certain level of risk mitigation when it comes to stockouts.

Reorder level (or reorder point) is the inventory level at which a company would place a new order or start a new manufacturing run.

Explanation

Obsolescent stock is stock, usually finished goods, which is in good condition and satisfactory working but for which demand is irreversibly falling towards zero. Once this demand reaches zero the stock canbe considered 'obsolete'. It cannot be used or sold in its current state. Food ingredients (like candy canes) which are out of date are another example.

Explanation

The amount of closing stock (properly valued) is used to arrive at the cost of goods sold in a periodic inventory system with the following calculation:

Opening stock + Purchases - Closing stock = Cost of goods sold

Explanation

Costs of holding inventory include the following:

• Acquisition cost

• Inventory holding cost

• Costs of stock-outs

Acquisition costs follow the typical procure-to-pay model. Benefits of procure-to-Pay (P2P) software include:

- Vendor Management, which includes researching, selecting, engaging with, and evaluating the performance of suppliers who make up your supply chain.

- Purchase Requisition Workflows, or the formal process of creating and submitting a purchase requisition (PR) for approval to meet a specific business need.

- Purchase Order (PO) Workflows, covering the creation of a formal, detailed PO from the purchase requisition, including information on the quantity and quality of goods and services, as well as specific terms and conditions.

- Receiving, which includes the acceptance of physical goods (or review of quality and completion for services) and entering the accepted order into inventory, tracking, and accounting systems.

- Invoice Management, during which the invoice is compared to the original PO to verify pricing, quality, quantity, and terms have been met.

- Accounts Payable Workflows, wherein the accounts payable department processes the invoice for payment, submits the payment to the vendor, and reconciles any related financial entries in the accounting system.

The software is intended to help reduce the acquisition costs.

LO 2, AC 2.2

Explanation

Holding costs (carrying costs) are the costs associated with the storage and handling of physical stock. There are two different types of holding costs:

- Costs related to the value of the goods: financial costs (i.e. the interest on the working capital tied up in inventory, which may be the bank borrowing rate or the company's target for return on capital); cost of insurance; losses due to product deterioration; losses due to obsolescence and redundancy of inventory; losses due to theft, accidental damage etc.

- Costs related to the physical characteristics of the inventory include the following: storage space; power, heat and lighting of the store; movement equipment; labour costs; administration costs.

Explanation

Organisations often create their own stock keeping unit (SKU) numbering system, which may or may not have a meaningful structure. Stock keeping unit is a number that is assigned to a product for the purpose of inventory management and is of tracking. In other words, a stock keeping unit is a unique identifier assigned to each product for easier and more efficient record keeping.

An FDA (US Food and Drug Administration) product code describes a specific product and contains a combination of five to seven numbers and letters. The product code submitted with each FDA line item should match the actual product name and/or invoice description of the product.

The International Standard Book Number is a numeric commercial book identifier which is in-tended to be unique. Publishers purchase ISBNs from an affiliate of the International ISBN Agency.

The Harmonized Commodity Description and Coding System, also known as the Harmonized System (HS) of tariff nomenclature is an internationally standardized system of names and numbers to classify traded products.

Explanation

A 'U' flow occurs when the goods receipt and dispatch functions are located at the same end of a warehouse building.

Products flow in at receiving, move in to storage in the back of the warehouse, and then to shipping, which is located at the adjacent to receiving on the same side of the building.

Items with higher throughput level are located closer to the loading bays. An example of a 'U' flow design can be seen in the diagram below.

Diagram Description automatically generated

Advantages of 'U' Flow

- Excellent utilization of dock resources because the receiving and shipping processes can share dock doors

- Facilitating cross-docking because the receiving and shipping docks are adjacent to one another and may be co-mingled

- Excellent lift truck utilization because put away and retrieval trips are easily combined and be-cause the storage locations closest to the receiving and shipping docks are natural locations to house fast moving items

- Yields excellent security because there is a single side of the building used for entry and exit

Explanation

The costs of stockouts - the costs of being out of inventory - include:

- Loss of production output

- Costs of idle time and of fixed overheads spread over a reduced level of output

- Costs of any action taken to deal with the stockout, such as buying from another stockist at an enhanced price, switching production, obtaining substitute materials

- Loss of customer goodwill due to the inability to supply or late delivery.

(Procurement and Supply Chain management - 9th Edition, K. Lysons and B. Farrington, 2016)

LO 2, AC 2.2

Explanation

Net present value (NPV) is the 'today' net value that deprives from 'future' cash flow of an invest-ment or a capital purchase.

The following formula is used to calculate NPV

Chart Description automatically generated with low confidence

Where:

Rt is the net cash flow (cash inflow - cash outflow) during the period t

i is the discount rate

t is the number of time periods

As you can conclude from the above formula, the net present value increases when the numerators (net cash flows) increase and/or denominators (1+i) decrease. So the correct answer should be "Net cash flow during a time period increases"

The purpose of this exercise is to help you identify the factors that influence the net present value and how to increase/decrease NPV in real-world scenario.

Explanation

The bullwhip effect (or Forrester effect) is a distribution channel phenomenon in which forecasts yield supply chain inefficiencies. It refers to increasing swings in inventory in response to shifts in customer demand as one moves further up the supply chain.

Seasonal demand: consumer interest in purchasing particular products only during a specific peri-od within the calendar year.

OPITZ is a coding system used to form Groups in Group Technology philosophy of Manufactur-ing.

The Pareto Curve is the shape created when the bars of a Pareto Chart are progressively summed and the points joined together. The final curve ends at 100% of items in the chart, which means that you can then draw a line across at 80% and 'bounce' it down to find the bar which, when combined with all bars to its left, will give 80% of all items.

Explanation

In a traditional warehouse, storage racks are arranged to create parallel picking aisles, perhaps with one or more cross aisles to allow workers to move quickly between picking aisles. This structure forces workers to travel rectilinear distances (north-south and east-west) to picking locations.

Kevin R. Gue and Russell D. Meller proposed alternative aisle designs:

- The 'Fan' shaped layout (or “Flying V”). This layout maintains parallel picking aisles, but al-lows the cross aisle to take on a different shape. If travel begins and ends at the bottom of the V, Gue and Meller expected distance to retrieve a single pallet is 10% less in this warehouse than in an equivalent traditional design.

- The Herringbone-shaped layout (or commonly referred as Fishbone layout) combines the verti-cal picking rows of a traditional warehouse with a second set of horizontal picking rows, divided by a V-shaped diagonal alley crossing the entire warehouse. This simple modification to the typical warehouse design allows employees (e.g. a forklift driver) to increase travel speed between picking locations. Efficiency gains achieved through a layout reconfiguration would reduce picking cost up to 23% compared to an equivalent warehouse using a traditional configuration.

Reference

Aisle Design - Kevin Gue

LO 1, AC 1.1