Luoyang Wohong Petrochemical Equipment: Introduction to Spare Parts Support and Regular Inspection Services for Solvent Recovery Unit

After the solvent recovery device is put into operation, two routine matters that determine its availability are spare parts and routine inspections: a shortage of spare parts can turn a minor fault into a shutdown; a lack of routine inspections can delay the discovery of hidden dangers until the equipment trips. Spare parts support and regular routine inspection services are to institutionalize these two matters, ensuring the device maintains stable operation between two major overhauls.

This service targets two types of customers: for those who have self-built devices but lack an operation and maintenance team, the inspection and spare parts will be undertaken by the service provider; for those who have an operation and maintenance team, the service provider will provide technical support and key spare parts guarantee, with the responsibilities and boundaries of both parties clearly stated in the agreement.

How does spare parts support operate

Spare parts are managed by classification based on their consumption characteristics: Vulnerable parts - sealing rings, filter cartridges, and packing, which have stable consumption patterns and are regularly stocked in the station, with the service provider replenishing them periodically; Periodic parts - mechanical seals of pumps, heat exchanger cartridges, and adsorbent materials, which are replaced based on operating hours or pressure difference, with the service provider providing advance reminders according to the account book and ensuring delivery within the agreed period; Key parts - compressors, fans, and control modules, which are high-value components with significant impact in case of failure, are stored in the service provider's regional warehouse, with urgent parts delivered within the agreed timeframe.

The spare parts ledger serves as the foundation for maintenance: it dynamically updates the installation location, replacement records, and inventory quantity of each spare part. The trend data of spare parts consumption also serves as a reference for assessing equipment status. If the consumption of a certain type of seal suddenly accelerates, it often indicates wear and tear on the shaft or cavity. Therefore, the inspection team should shift their focus accordingly during routine inspections.

How to organize inspection tours

Regular inspections are conducted monthly, each lasting from half a day to a day: review of operational data - comparing recovery rates, energy consumption, and alarm records with those from the previous inspection, with a focus on verifying drift items; on-site point-by-point inspection - inspecting pump vibration and temperature rise, pipeline sealing, condensing unit status, and instrument readings, scoring each item according to the inspection checklist; on-site handling - minor defects are addressed on the spot, while those that cannot be resolved are included in the maintenance plan with recommended solutions.

The inspection report shall be delivered within three working days after completion, including inspection results, comparison with the previous period, list of hidden dangers, and suggestions. With this report in hand, the station's maintenance plan will have a basis. A deep inspection shall be conducted quarterly, along with a verification of the pumping capacity and a system pressure maintenance leak check, which shall be linked with the annual maintenance plan.

The value of inspection services lies in their continuity: using the same checklist and the same benchmark for judgment, comparisons across months become meaningful. The trend curve of equipment status is plotted quarterly, enabling early detection and early arrangement of deterioration. Maintenance shifts from reactive repair to planned arrangement, with the station master controlling the downtime period and duration. The initiative in production is not lost due to equipment issues.

Service content and delivery

How to implement the service

1. Sign a service agreement to clarify the inspection frequency, spare parts classification, and response time;
2. Establish device archives and spare parts ledgers, and input baseline data;
3. Monthly inspections are conducted according to the schedule, and reports are submitted on time;
4. Replenish consumable parts periodically and update inventory dynamically;
5. Remind in advance for the replacement of periodic parts, and ensure timely delivery for key components;
6. Conduct an annual service summary, document the trend of equipment status and formulate plans for the next year.

Frequently Asked Questions

The station already has an operation and maintenance team. Is this service still needed?

Let's identify the shortcomings: the daily operation and maintenance team can cover the needs, but what is lacking is experience data on key spare parts channels and status judgment. In this case, signing a contract based on a combination of key parts guarantee and quarterly in-depth inspection is more cost-effective than a full-service contract.

Are all the problems found during the inspection repaired on the spot?

Minor defects should be addressed on the spot. Those requiring machine downtime or special operations should be included in the plan and provided with suggested solutions. The boundaries between on-site repairs and planned repairs should be clearly stated in the agreement to avoid any temporary disputes on site.

Will the spare parts inventory occupy a lot of funds?

Hierarchical management aims to control costs: low-value consumables are kept in stock, while high-value critical components are covered by regional warehouses, with the station only responsible for maintaining a small amount of standing inventory. Compared to the losses incurred during an unexpected downtime, the return on spare parts investment is clear.

This article is compiled by Luoyang Wohong Petrochemical Equipment Co., Ltd., which provides design, manufacturing, and operation and maintenance services for condensation recovery, membrane separation recovery, and complete solvent recovery equipment to chemical and pharmaceutical enterprises. If you need process evaluation or scheme configuration, please feel free to contact us for discussion.