A hydraulic spares list for a site weeks from resupply

A spares list for a site weeks from resupply is a risk decision rather than a convenience one. On a site with a hydraulics counter down the road, stocking is a convenience question. On a mine camp, a remote quarry or a drilling programme where the next consignment is weeks out, it is a risk question — and the two produce very different lists from the same catalogue.

The instinct is to stock cheap things deeply and expensive things thinly. Reverse the question: what does the site lose per day while this item is absent? A fitting worth very little that stops a haul truck outranks an expensive item that stops a compressor nobody is waiting on. Once the list is sorted that way, most of it turns out to be small parts.

A site with a crimper and someone trained to use it should hold hose by the metre with ends and ferrules, because one coil covers many part numbers and a finished assembly covers exactly one. A site without that capability should hold finished assemblies for its critical circuits — tagged, so the right one is findable in a crate at night.

The first is seals. They are treated as consumables to be bought with the repair, and they are the item most likely to leave a machine dismantled while a parcel crosses a border. Hold them by the box.

The second is the expensive assembly nobody wants to buy twice. It gets left off the list precisely because it is expensive — and it is the one item whose absence costs more than its price in a single week. If a site has one machine it cannot work without, the critical line on that machine belongs in the store, however uncomfortable the invoice.

Where resupply is measured in weeks, consolidation matters more than speed. One planned consignment carrying the season’s consumables costs less in freight and in paperwork than four urgent parcels, and it is easier to clear. Plan the replenishment against the season rather than against the last failure, and keep one small air-freight budget for the genuine emergency.