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

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.

MRP software combines the master production schedule, the bill of materials and the inventory information to work out the net requirements (net MRP) of what to purchase or produce and when.

These net requirements are worked out using the following equation:

Net requirements = Total requirements - Available inventory

Where:

Total requirement = Gross requirements (gross MRP)

Available inventory = Inventory on hand + Units on order

In the other words, Gross MRP = Net MRP + Available inventory, so the answer should be "The gross MRP includes consideration of available inventory, whereas the net MRP does not"

LO 2, AC 2.3

Explanation

Safety stock is also known as buffer stock. As this name suggests, this type of stock provides some kind of 'buffer', which means safety stock will help the business to reduce the shocks induced by volatile demand or disruption on the supply chain. In other words, safety stock will reduces the probability of stockouts. The following graph would explain the reason why an organisation should have safety stock:

Chart, histogram Description automatically generated

Figure 1: Safety stock graph

As it is only the buffer against uncertainty, safety stock level should be equal to the deviation of demand or replenishment time. Safety stock should be able to accommodate variance of demand and variance of lead time.

Explanation

There are two main processes of recycling – open loop recycling and closed loop recycling.

Open Loop Recycling

Open loop recycling is a method that delays disposal by converting manufactured goods and spent materials into both new raw materials, which can be used for a manufacturing purpose, as a fuel source for a different manufacturing process and waste products.

Typically, materials recycled through open-loop recycling will be used for purposes different from their original purpose.

This means that the input into the recycling process is converted to a new raw material, which can be used as an input into another manufacturing process.

Materials in an open loop recycling process are treated using various forms of treatment including heat, chemical reactions, or physical crushing.

Closed Loop Recycling

Closed loop recycling is a process where waste is collected, recycled and then used again to make the same product it came from. This process is restorative and regenerative by design and aims to keep materials at their highest utility and value always.

Closed loop recycling is focused on resource sustainability, which means that recycling of a material can be done indefinitely without degradation of properties. In this case, conversion of the used product back to raw material allows repeated making of the same product, which helps hazardous waste generators reduce carbon footprint and achieve corporate sustainability initiatives.

Closed-loop recycling is common in specialized industries, such as the computer and battery industries, which use expensive or complex goods that cannot easily be broken down post-consumption into constituent materials.

A prime example of a closed-loop recycling process is the recycling of aluminum cans. Aluminum can be recycled to form new cans with little material degradation or waste creation.

Explanation

Void filling is the general term giving to the challenge of filling the space left in a box after the products have been packed. This means that if there is no void filling material, the product inside can move around and could be damaged. Materials to fill voids to secure contents

• Polystyrene (PS) is a synthetic aromatic hydrocarbon polymer made from the monomer known as styrene.[5] Polystyrene can be solid or foamed. General-purpose polystyrene is clear, hard, and rather brittle. It is an inexpensive resin per unit weight. It is a rather poor barrier to oxygen and water vapour and has a relatively low melting point.[6] Polystyrene is one of the most widely used plastics, the scale of its production being several million tonnes per year.[7] Polystyrene can be naturally transparent, but can be coloured with colourants. Uses include protective packaging (such as packing peanuts and CD and DVD cases), containers, lids, bottles, trays, tum-blers, disposable cutlery[6] and in the making of models. Polystyrene is generally considered to be non-biodegradable. However, certain organisms are able to degrade it, albeit very slowly.

• Chips made of bio-degradable materials

• Absorbent and fire-resistant material

• Shredded paper, cardboard or wood-Based material

• Paper or cardboard rolls

• Bubble wrap

• Air-filled cushions

• Self expanding foam

Straps are used to group items into unit load. Polypropylene or polyester are the materials most often used. The wider the strap, the stronger it will be. Using more than one strap and straps for length and width will create a strong place for stock.

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

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

ABC classifications are applied to stock and its management is based loosely on the Pareto princi-ple, better known as the 80/20 rule.

The likely outcome of analysis of inventory (value importance):

- Category A - about 20% of the stock items account for about 80% of the total inventory value. Items in category A have the highest value.

- Category B - about 30% of items account for about 15% of total inventory value

- Category C - the remaining 50% of items account for 5% of the total inventory value

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

Lean thinking aims to remove wastes from work processes. Before diving into the 8 wastes, it is important to understand what waste is. Waste is any action or step in a process that does not add value to the customer. In other words, waste is any process that the customer does not want to pay for.

The original seven wastes (Muda) was developed by Taiichi Ohno, the Chief Engineer at Toyota, as part of the Toyota Production System (TPS). The seven wastes are Transportation, Inventory, Motion, Waiting, Overproduction, Overprocessing and Defects. They are often referred to by the acronym ‘TIMWOOD’. The 8th waste of non-utilized talent or ‘Skills’ of workers was later introduced in the 1990s when the Toyota Production System was adopted in the Western world. As a result, the 8 wastes are commonly referred to as ‘TIMWOODS’.

A picture containing application Description automatically generated

Source: The lean way

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

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

Direct and indirect costs of holding inventory include the following:

- Acquisition costs

- Holding costs: There are 2 different types of holding costs: costs related to the value of the goods (including opportunity costs, costs of insurance, losses due to product deterioration, etc) and costs related to the physical characteristics of this inventory.

- Costs of stockouts

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

Direct and indirect costs of holding inventory include the following:

- Acquisition costs: preparing the requisition, supplier selection and approvals, time and costs of the procurement process, etc.

- Holding costs

- Costs of stockouts

LO 2, AC 2.2

Explanation

ABC analysis is an approach for classifying inventory items based on the items’ consumption val-ues. Consumption value is the total value of an item consumed over a specified time period, for example a year. The approach is based on the Pareto principle to help manage what matters and is applied in this context:

- A items are goods where annual consumption value is the highest. Applying the Pareto principle (also referred to as the 80/20 rule where 80 percent of the output is determined by 20 percent of the input), they comprise a relatively small number of items but have a relatively high consumption value. So it’s logical that analysis and control of this class is relatively intense, since there is the greatest potential to reduce costs or losses.

- B items are interclass items. Their consumption values are lower than A items but higher than C items. A key point of having this interclass group is to watch items close to A item and C item classes that would alter their stock management policies if they drift closer to class A or class C. Stock management is itself a cost. So there needs to be a balance between controls to protect the asset class and the value at risk of loss, or the cost of analysis and the potential value returned by reducing class costs. So, the scope of this class and the inventory management policies are determined by the estimated cost-benefit of class cost reduction, and loss control systems and processes.

- C items have the lowest consumption value. This class has a relatively high proportion of the total number of lines but with relatively low consumption values. Logically, it’s not usually cost-effective to deploy tight inventory controls, as the value at risk of significant loss is relatively low and the cost of analysis would typically yield relatively low returns.

LO 2, AC 2.1

Explanation

The ISO 14000 family of standards are developed by ISO Technical Committee ISO/TC 207 and its various subcommittees. For a full list of published standards in the series see their standards catalogue. ISO 14001 provides requirements with guidance for use that relate to environmental systems. Other standards in the family focus on specific approaches such as audits, communications, labelling and life cycle analysis, as well as environmental challenges such as climate change.

ISO 27000 family of standards concerns information technology, with the goal of improving security and protecting company assets. Started in 2005, the two most popular standards are ISO 27001:2013 and 27002:2013. 27001 is management-based system, whereas 27002 is a technical document, focused on the individual and putting a code of conduct in place. Organizations can choose either standard; ISO 27001 has over 22,000 certifications worldwide. It is a broad standard, and for this reason the certification can be customized to fit the needs of the organization, and is not mandatory.

ISO 22000 sets out the requirements for a food safety management system and can be certified to it. It maps out what an organization needs to do to demonstrate its ability to control food safety hazards in order to ensure that food is safe. It can be used by any organization regardless of its size or position in the food chain.

ISO 9001 is a family of quality management standards, there are fourteen in total. Of these, ISO 9001:2015 is the only one that can be certified to. It was first published in 1987, and has since been updated about every 7 years. The standard details how to put a Quality Management System (QMS) in place to better prepare your organization to produce quality products and services. It is customer focused, and places an emphasis on continuous improvement and top management processes that extended throughout the organization.