6. Warehousing and storage
- Decide on the level of stock required and ensure good stock management.
- Determine storage space requirements based on the level of stock required.
- Select a warehouse that meets adequate design requirements including security, access, size, ventilation, location and utilities.
- Ensure all goods are received by the storekeeper and inspected on delivery.
- Ensure the warehouse space is organised to facilitate effective storekeeping and comply with safety standards, and allow sufficient space for delivery and packing.
- Implement good piling/stacking practices.
- Implement an appropriate rotary system for the order of stock coming in and out, considering expiry dates.
- Ensure food storage complies with a food safety checklist.
- If good quality warehouse options are not available, consider emergency storage solutions such as containers and Rubb halls.
- Implement minimum standards for warehouse management tools, including the use of waybills, and other standard warehouse and inventory management documentation.
- Put in place adequate warehouse staffing including storekeeper and loaders.
- Consider sharing warehouse space with other NGOs as a cost-saving measure but ensure very clear delineation of space, controls and liabilities.
- Supply the warehouse with adequate levels of materials and equipment.
- Ensure safety measures are in place including safety equipment and practices.
- Put controls in place to minimise security risks to warehouse and stock.
Storage may be short-term for goods in transit or long-term to accumulate working stock that can be used for long-range planning and distribution, or used as a contingency.
The stock in the warehouse acts as a regulating buffer between supplies (stock entries) that are normally intermittent and needs (stock deliveries) that are normally regular or unexpected (emergency). Stock management involves managing an appropriate level of stock in the warehouse for regular needs as well as a certain level of supplies in case of emergencies. Stock has a cost-the price of items plus the warehousing charges (rent, human resources and materials). A good stock management system requires the right balance between costs and response to need.
The decision to create stock depends on several factors. First, you have to balance the benefit of holding stock against the cost of doing so. Second, you need to think about:
- protecting against uncertainty-if deliveries are late, sufficient inventory protects from stock-out
- bulk purchasing-prices are generally lower
- anticipating fluctuations or emergencies.
Warehouses contain different items identified as:
- fast/slow movers.
Items with a fast turnover, in terms of consumption, need good planning. Variations such as monthly consumption, delivery lead time (time period between accepting an order and the actual delivery of that order), expiry date (if applicable) and destination (what is going where) need to be monitored closely.
The quantity per item of stock required is based on two elements:
- Buffer stock-the buffer stock is the necessary quantity to supply the ongoing programmes without using the contingency stock.
- Contingency stock (or minimal stock)-the contingency stock is for unexpected events. Only vital articles form contingency stock. The contingency stock level is the result of coordination between the logistic department and the programme department. The contingency stock depends mainly on the humanitarian and security situation.
The following data are necessary to determine the buffer stock per article:
- estimated monthly consumption of the article
- frequency of orders to replenish the stock
- standard delivery time of the orders.
The amount of storage capacity required will depend on the type of storage required. The items and quantities needing to be stored are based on the:
- programme’s needs within a given period
- buffer stocks based on the time necessary to replenish
- contingency stock
- storage requirements and lifetime of products.
To determine the size of the warehouse required, use the volume and floor space needed, rather than the weight of the items to be stored. Extra space is needed to load, unload and repack damaged bags, and will also help with ventilation. A good ratio is 30% for access and 70% for storage.
Storage height depends on the type of items and packaging. A two-metre stacking height is appropriate for the majority of items. Piling over three metres is dangerous and may jeopardise stock at the bottom.
6.2.1 How to calculate space required
Example of calculation of the storage space required for a distribution of 10,000 rations of four litres of oil, 15 kg of wheat flour and one kg of iodised salt.
Items Net weight (kg) Volume
Oil 40,000 40 * 1.8 = 72 m3
Wheat flour 150,000 150 * 1.7 = 255 m3
Iodised salt 10,000 10 * 0.8 = 8 m3
Total 200,000 335 m3
Note: For some items, consider packaging weight and volume for the calculation.
Storage space with a stacking height of two metres will be: 335 / 2 = 167.5 m2
Suitable surface for access and ventilation is: 167.5 / 7 * 3 = 71.8 m2
The logistician will need roughly 240 m2 (167.5m2 + 71.8m2)
Note: Total weight for the distribution is a key factor for transportation, as it will determine the number of trucks or trips needed.
- Accessibility: Access to warehouse should be easy for cars and trucks in all weathers.
- Utilities: There should be office space for the storekeeper, preferably with toilet and wash-up facilities, and regular garbage disposal. Lighting in the warehouse and surrounding area. The warehouse should be fenced and facilities should be present for watchmen.
- Size: The warehouse should have sufficient capacity to meet forecast requirements for temporary or transit storage.
- Security: Area should not be likely to invite intrusion or vandalism.
- Proximity: There should be good access to transport infrastructure.
- Easy movement: The warehouse should have sufficient additional floor area to permit easy stock handling and access to all stocks for inspection, and insect and pest control.
- Ventilation: The construction should be dry and well ventilated. The roof should be leak-proof. There should be no broken windows. Doors should close securely with no gaps. To reduce temperature inside the warehouse, you should paint the roof and walls outside, in white.
Maintenance: The floor should be flat and solid, preferably smooth and crack-free concrete. The walls should be as clean and smooth as possible.
The storekeeper must be informed in advance by the logistician about deliveries, to be ready for storage (with sufficient clean space) and to recruit loaders if necessary. The storekeeper must know:
- the quantity of items (volume/weight/packaging)
- the delivery date
- the supplier/organisation name for external deliveries.
The storekeeper must inspect the delivery on arrival. If the inspection indicates poor quality, the storekeeper must refuse the delivery; it is easier to request the exchange of products at this stage. The delivery inspection involves the storekeeper:
- checking the quantity that is delivered matches the quantity mentioned on the delivery note; count and/or weigh the items when needed
- performing an administrative check-general documentation, consistency between the batch numbers, conformity certificates (or composition) and delivery notes
- refusing goods of an obviously poor quality-torn bundles, leaking drums, signs of insects, rusty tins, bad smells, wet goods
- repairing any weakened packages before storage
- writing the date of entry of stock on all the bags/final packaging if that perishable item has no date on the package.
Zones for activities and areas for storage must be defined inside the warehouse. These zones and areas can be identified by painting on the floor or, when feasible, by using metallic wire grids with secure locks. The space should be divided into four specific zones:
- arrival zone-during unloading, the storekeeper will inspect the delivery for quality and quantity. If this is correct, the storekeeper will accept and register the goods
- packing zone-for some deliveries, the storekeeper must prepare the order. The packing zone can also be used for repacking
- delivery zone-to save time during loading and to avoid disorder, items ready to be delivered are stored per destination
- storage zones-where stock is stored.
The organisation of storage zones will depend on the:
- volume and nature of products to store
- turnover of products-goods with the highest turnover must be more accessible
- compatibility of products.
An easy-reference guide should be developed for high-turnover stocks with numerous products. The guide will show:
- the precise division or building
- the shelf or rack, the column, and row or bin within the shelf.
This reference will be mentioned on the stock card to find the product’s physical location within the warehouse.
6.5.1 Storage of products
- Food items cannot be stored with chemicals of any kind (including cement) (see 6.8 below)
- Drugs and medical supplies need a separate building or room. These products are usually under the responsibility of a pharmacist.
- Fuel and spare parts for vehicles need a separate storage, if possible, close to the workshop.
The storekeeper must follow these rules:
- Always store on pallets or shelves. (When there are not enough pallets, the goods that are less vulnerable to humidity will stay temporarily on the floor. If available, the storekeeper should layer the floor with plastic sheeting.)
- Ensure stacks are standardised to facilitate the physical inventory.
- Use one pile per product, per packaging, per expiry date and per donor.
- On each layer, alternate the direction of boxes to prevent a stack from tipping over.
- Leave 70 cm of empty space between stacks and walls.
- Do not exceed a height of three metres for stacks. Do not store above one metre per square metre.
When moving stock, the storekeeper should follow the following principles:
- First in, first out-goods that have been longest (subject to expiry date) in stock are delivered and/or consumed first, except for goods that expire.
- First expired, first out when dealing with products that can expire. Note that what comes in first, does not necessarily go out first (recently received drugs might have a more recent expiry date). Goods are stored according to expiry date-latest expiry at the back.
Storage requirements are much more stringent for food items than for non-food items.
Failure to meet these requirements will jeopardise the quality and safety of food items. Specific requirements are indicated on the packaging of food items. If there is no specification, good practices require:
- a shaded place (no direct sunlight on the goods)
- a dry environment (less than 70% humidity)
- a temperature between 0°C and 30°C.
The storekeeper is responsible for maintaining the quality of stored food items. Storekeepers must highlight on the stock report any quality problems and all goods close to the expiry date. The majority of non-food items can be stored in a non-optimal way for several days without major damage, whereas food items deteriorate very quickly or immediately.
In food aid programmes, the loss of food due to bad storage conditions has direct consequences for beneficiaries. Good storage techniques reduce the risks of food waste. In addition, specific food quality management is required to detect any possible damage and to take steps to halt any spoilage and consequent loss. For more information see Chapter 19 Distribution.
- For small volumes, containers 6 or 12 meters long can be used as alternative storage facilities.
- Containers offer a strong and waterproof structure. They are easy to secure and to transport. On the negative side, they can have poor ventilation, which leads to high temperatures and humidity. A weightless roof above the container reduces the temperature due to sunlight.
- The Rubb hall is a large tent designed for storage.
- The weakness of the Rubb hall is security. Efficient drainage around the tent is needed for rainwater.
- To avoid mud, you must use gravel or light concrete on the access roads and surroundings. When possible, place the tent on a dry, flat surface on high ground to avoid flooding.
- For a brief period, and if no better solution is found, emergency storage can be used. The minimum material required is plastic sheeting and wood.
- Prepare a flat surface with drainage for rainwater.
- If available, spread gravel on the surface. Lay the plastic sheeting on the flattened ground.
- Set the wooden pallets on the plastic sheeting and pile up items on the pallets.
- Cover with a top plastic sheet to protect items from sunlight and rain.
- Remove top plastic sheeting regularly for ventilation.
This solution is only acceptable for a short period, such as one-shot distribution.
A warehouse management system is a basic accountability requirement, and is essential for effective management of the warehouse and for tracking stock. Each warehouse must maintain the documentation in section 6.10.1.
6.10.1 Warehouse management tools-minimum requirements
- Are an official document
- Must accompany all commodity movements within the CARE logistics systems
- Are the primary document to accompany commodity movements through the logistic system, from one point to another
- Are standard transportation documents world-wide and generally contain the same information, but the design of the waybill may vary
- Come in multiple copies, usually five, on pre-printed pads in different colors
- Are numbered with a reference number and dated
- State the point of loading and the place of delivery
- State the number of units or pieces loaded
- List the transport vehicles’ registration numbers including trailer numbers if used
- The standard CARE waybill is divided into three parts: basic reference data, dispatch information and receipt information
- Should be issued per transport vehicle
- Are stamped with the transporter’s stamp, and signed by the driver
- Should be completed after each shipment has been unloaded
- The receiver must send a signed copy to the transporter upon receipt of goods
- Any shortages or damage to commodities must be noted on the waybill before returning it to the transporter, usually via the driver
- Any failure to note damages or shortages may result in the receiver losing the ability to file a claim with the transporter.
Ledger format (Annex 15.7)
The CARE inventory ledger form is used to record all commodity transactions for a particular shipment. Each shipment will have its own CARE inventory ledger form. The inventory ledger is activated when a new shipment enters the CARE logistic system and is closed when the shipment has been fully received and distributed, and no longer physically resides in stock.
Release order (Annex 15.8)
This document authorizes the storekeeper to release and expedite the goods mentioned on it.
Stack card/bin card (Annex 15.9)
The stack card is a reference associated with each stack of commodities in the warehouse. It provides a record of issues and receipts from a particular stack. No stack should contain more than one shipment. The stack card is an obligatory part of any warehouse management system and is critical to undertake a physical inventory of commodities stored in a warehouse.
Stock report (Annex 15.10)
Items with a high turnover should be the subject of a weekly stock report. A stock report gives an accumulated overview of total incoming and outgoing transactions within a specified time frame. This is related to the previous stock figures and matched against the stock count.
Physical inventory tally sheet (Annex 15.11)
Physical inventory of the stock must be conducted on a regular basis (at least every three months) on a stack-by-stack basis. The number of units counted must be compared with the stack card to ensure that no unrecorded issues or receipts have taken place. A loss report must be completed for the difference between the stack balance and the physical count.
Loss adjustment reports (Annex 15.12)
The loss and adjustment report (LAR) is a reporting form that is used to record any losses or excesses of commodities in the logistic network, including losses in transit and in storage.
Packing list (Annex 15.13)
This document specifies the distribution of goods in individual packages.
Daily report receipt form (Annex 15.14)
This form is used by the storekeeper to report daily on the receipt of incoming goods in the warehouse.
Note! For central warehouses, the storekeeper should computerize the data daily. A basic computer with a spreadsheet will save time if stock reports are already in electronic format.
An employee must be in charge of the warehouse and storage management. For a small volume of activity, this function can be managed by another logistics function. Above a given volume in stock or frequency of deliveries, a storekeeper has to be recruited to take care only of the warehouse management.
The main responsibilities and tasks are to:
- ensure a correct physical and administrative stock management
- manage the team of loaders
- check the safety of the warehouse and goods.
The storekeeper is responsible for implementing all necessary measures related to the maintenance of the quality of stored food items. If a problem cannot be solved at the storekeeper’s level, the logistician has to be informed. The storekeeper is responsible for the items stored. Any discrepancy with the stock book should be justified, otherwise disciplinary sanctions may be applied.
Loaders are under the responsibility of the storekeeper. They have to load, move and unload goods. They also undertake minor repair and repacking of damaged bags. The number of persons will depend on the volume and on the storage facilities. Loaders can be permanent employees, daily workers or a team paid per ton or unit carried depending on the frequency of activities. Generally, you should hire a team of loaders to cover regular needs and extra loaders on a daily basis (or for a specific task) to meet additional workloads.
To perform adequate storage and safe handling some equipment is needed. Requirements depend on the volume of movements, availability and practices in the country of operation, but may include:
- pallets or wooden platforms, shelves
- trailer or wheelbarrows, hydraulic loading and moving equipment (trans-pallet, forklift)
- manual and precision scale, measuring tape, empty bags and boxes, ladder (to access the top of piles).
For correct stock management, some simple equipment is necessary, such as:
- stock management procedures (stock cards, delivery notes and other forms as described in section 6.10.1)
- basic stationery, adhesive tape, calculators and office supplies (such as an archiving cupboard with a lock)
- conversion tables (weights, measures and volume)
- safety equipment including a first aid kit, sand, buckets, axes and appropriate fire extinguishers
- equipment to repair damaged packaging
- tools for opening and closing crates
- cleaning materials
- traps for rodents
- a computer for the central warehouse.
Rental and security costs could be significantly reduced by sharing a warehouse (with several divisions) or a compound (with several buildings) with another NGO. However, it should never involve sharing a single undivided space, as this could be a source of problems in terms of coordination, responsibility and procedure.
If an organization asks for temporary storage in CARE warehouses, the logistician has to clarify the:
- duration of storage and the cost in terms of pallets, cleaning and labor, if any
- person entitled by the other organization to release the goods and documentation used
- non-liability of CARE for the goods in case of damage, looting or theft.
- Make sure that mechanical equipment is maintained, and used only by authorized personnel.
- Make sure that safety instructions are strictly followed (tools, handling, lifting).
- Make sure that there are first aid kits, that they are maintained, and that someone knows how to use them.
- Keep an accident log together with the Safety and Security Officer.
- Check periodically that all openings (doors, windows, etc.) are working properly.
- Assign responsibilities and set out the steps that each staff member should take in case of fire.
- Make sure that fire-fighting equipment is immediately accessible inside and outside buildings.
- Prohibit smoking by anyone (including visitors and drivers).
- Never store, even temporarily, flammable materials in the main storage area.
The value of the products in the warehouse is significant and the insurance system is usually not functional in areas where CARE is operating. Below is some advice for the logistician to reduce the risk caused by five common threats:
- Internal pilfering-this threat can be limited by using clear procedures, documentation and undertaking responsibility for the warehouse.
- Robbery-a team of guards or a private company guard has a dissuasive effect; the number of people involved depends on the value of the stock. Reinforcing passive protection means strengthening the warehouse with high walls, barbed wire, metal gates and doors, efficient lighting, strong padlock, grids on the windows and ventilation openings.
- Looting by armed groups-prevention is possible by reducing the quantities in stock and by choosing a warehouse located in a non-exposed area. It may lead to a ‘zero stock’ policy in certain operating zones.
- Fire-prevention is essential. Smoking is forbidden inside a warehouse. Sensitive items (fuel, oils and chlorate) are kept in separate divisions. Fire extinguishers and sand must be available. Staff must be trained and tasks allocated in case of fire.
- Natural disaster-the choice of the location and the resistance of the building itself may protect the stock; this applies in particular to flooding or typhoons.
See also Safety and security.