How extensive is the scope of spare parts?

The quantity of spare parts should be determined based on the importance of the equipment and its failure frequency.

The labor-intensive task is to tally the specifications, materials, quantities, and brands of components by specialty.

Personally, I think two factors determine the scope of spare parts: 1. The degree of damage to the equipment’s components and the frequency of such damage； For example, mechanical seals suffer from higher failure rates compared to other components, so spares are required. 2. The price of spare parts and the procurement timeline ； In large measure, spare parts have little value in terms of the equipment itself; moreover, regular supplies that can be delivered to the company promptly do not need to be included in the spare parts inventory

This post was last edited by Luobupo de Yu on 2020-6-16 08:42. A large inventory of spare parts consumes corporate funds； With few reserves available, there may be a shortage when needed, which could affect production. Stocking can only be done based on importance and frequency of damage. For example, mechanical seals and bearings for pumps should always be on hand. Pumps’ shafts, impellers, and volutes do not suffer from damage frequently; if you operate one pump while keeping another as a backup and have a good relationship with the manufacturers of spare parts, then the decision can be made based on the level of importance. In fact, it mainly depends on how much the company allows to be kept At the same time, the operation level and the depth of maintenance are also decisive factors.

Conventional random spare parts usually include machine seals, sealing rings, gaskets, and shaft sleeves – components that may develop problems during the commissioning phase. Only with long-term use is consideration given to bearings, impellers, shafts, and the like.

This post was last edited by 3983596_FPPZ on 2020-6-16 09:41. Spare parts refer to those components in a device that are relatively weak, prone to damage, and subject to wear during operation; such components are likely to fail or get damaged, and their procurement takes time. Spare parts vary from one device to another – for example, the impeller in one pump may be considered a spare part, while the impeller in another pump might not be. What constitutes spare parts and what their scope is are determined through negotiation with the equipment manufacturer based on specific circumstances. The manufacturer can only provide recommendations; there is no obligation. The user must make a choice based on factors such as the frequency of device use, the company’s level of equipment management, operational skills, the stability of process parameters, the quality of the equipment, its importance, and any regulations set by the company – nothing is absolute. For devices that are used frequently, where the pump position is crucial, and the company has no budget constraints, it is possible to stock more spare parts based on specific circumstances, or to expand the range of spare parts available. If everything could potentially get damaged, then it seems a bit excessive to do so

Our company uses the “ABC Kanban Management” system to store spare parts, and for critical spare parts, we establish long-term supply agreements with suppliers to create dedicated spare parts warehouses.

This is the general issue with equipment management; to add something, it involves transferring some of the internal on-site spare parts to the supplier’s inventory. There is a standard that cannot be achieved, namely “achieving zero inventory” – that is the ultimate goal: lol

Maintain reserves in proportion based on the same number of devices