Management of Hazardous Chemicals (Part 2)

04 Warehousing and storage are not simply about receiving goods, but rather the first on-site confirmation of the risk status
After hazardous chemicals enter the site, one of the most crucial management actions is the warehousing inspection. If this step is not properly executed, subsequent storage and use will be based on incorrect principles.

1. When entering the warehouse, it is necessary to verify that the "items" and "information" are consistent, including:
Is the product name, specification, and quantity consistent with the application and contract;
Is the packaging intact;
Is the hazard sign clear;
Is the certificate of conformity, MSDS, and Chinese instructions for imported materials complete;
Have the chemical properties and storage requirements been clarified.
In principle, chemicals with unclear properties, incomplete information, or abnormal packaging should not be allowed to enter the warehouse. In the management of hazardous chemicals, the habit of "accepting them first and asking questions later" should be avoided at all costs.

2. Storage must adhere to the principles of classification, zoning, and separation. The storage of chemicals should not merely consider whether there is sufficient space, but rather whether the properties are compatible, the distance is reasonable, and the environment is suitable. Necessary safety distances must be maintained between different types of chemicals, and conditions such as fire prevention, explosion prevention, moisture prevention, sun protection, anti-static measures, and ventilation must be provided.

3. Warehousing is not just about "placement"; it involves continuous monitoring of the warehouse to ensure consistency between records and physical inventory. This is just the foundation, but more importantly:
Regularly check the integrity of the packaging;
Prevent escaping, emitting, dripping, and leaking;
Ensure that warning signs, emergency facilities, and protective equipment are in place;
Control the behavioral boundaries of personnel, vehicles, and operational methods entering the storage area.
The most crucial aspect of storage management is to maintain chemicals in a "stable state". Once packaging is damaged, environmental conditions change, chemicals are mixed or misplaced, or protective measures are lacking, chemicals can quickly transition from being "stored items" to becoming "sources of accidents".

The most feared thing during the loading and unloading stage is "treating materials as ordinary goods", which is often the high-risk point for accidents
The loading, unloading, and handling of hazardous chemicals constitute a typical high-risk exposure process. It involves not only the integrity of packaging but also personnel actions, tool selection, weather conditions, and on-site order. Truly safe management of loading, unloading, and handling goes beyond mere "gentle handling". It necessitates the implementation of the following controls:
Clarify the characteristics of the materials before starting the operation;
Use appropriate handling tools and protective equipment;
Avoid high-risk actions such as falling, bumping, hitting, dragging, pulling, rolling, and toppling;
Special control measures shall be taken for flammable, explosive, and corrosive materials;
Avoid carrying out unnecessary tasks under harsh conditions such as high temperatures and thunderstorms;
Implement access and protection requirements for personnel and vehicles entering hazardous areas.
Many leakage accidents are not caused by equipment issues, but rather by damage to packaging during handling; many fire and explosion risks are not formed during storage, but are triggered by impacts, static electricity, or misoperations during loading and unloading. Therefore, the loading, unloading, and handling of hazardous chemicals must always adhere to one principle: it is not a logistics operation, but rather an activity with chemical risk attributes.

The most crucial aspect of the usage phase is not "knowing that it is dangerous", but rather "ensuring that every operation adheres to the boundary conditions of the chemicals"
The ultimate high-frequency exposure point for hazardous chemicals often lies at the site of use. However, the most common issue in use management is not the absence of regulations, but rather the gradual substitution of procedures with experience-based on-site operations. For truly effective use management, at least the following should be achieved:

1. Before use, operators must understand the MSDS and operational requirements:
What is matter;
What are the main hazards;
What are the potential contact paths;
What protective measures are needed;
How to handle in case of leakage, splashing, or accidental contact.


2. The usage and temporary storage quantities are controlled to avoid the practices of "putting in more for convenience" and "taking more initially and using slowly later". Excessive usage and temporary storage will amplify on-site exposures and the consequences of accidents.

3. Prevent contact with incompatible substances. Many serious accidents are not caused by a single substance, but by uncontrolled reactions triggered by mismixing, misadding, or miscontact.

4. After completing the task, waste materials must be promptly sorted and disposed of. Packaging materials, protective equipment, residual liquids, and waste liquids that have been contaminated with chemicals cannot be treated as ordinary garbage. The core of safety in the use process is not whether there is a management system for chemicals, but whether each operator truly understands the boundaries of these substances and knows which lines they cannot cross.

The management of highly toxic, explosive-prone, and drug-prone chemicals is not merely an "enhanced version" of general chemical management, but requires the establishment of separate defense lines
For highly toxic, explosive-prone, and drug-precursor chemicals, enterprises cannot simply follow the management approach for general hazardous chemicals. Instead, they must establish a higher standard and stricter special management mechanism.

The core of managing highly toxic chemicals lies in "strict control". It is necessary to obtain purchase vouchers in accordance with the law, adhere to requirements such as dedicated storage, dual management, dual locks, dual accounts, and dual signatures, and maintain high traceability for storage quantity, usage, flow direction, and abnormal situations. In the event of theft, loss, mis-sale, or misuse, immediate reporting is required.

2. The core of managing chemicals that can easily lead to explosions lies in "traceability and verifiability". Double-person review and ledger tracking should be implemented throughout the entire process, from procurement, acceptance, storage, requisition, return to storage, to usage, to ensure clarity in every circulation and authenticity of every inventory.

3. The core of precursor chemical management lies in the "whole-process closed-loop" approach. Apart from the procurement platform, supplier qualifications, and dual-lock special warehouses, it is even more crucial to ensure that the entire process of procurement, storage, requisition, return to warehouse, and disposal is accompanied by ledgers, responsibilities, records, and filings. The common characteristics of the management of these three types of special chemicals are: the risks are not only production safety risks, but also include public safety, security, and compliance risks. Therefore, it is necessary to implement dedicated personnel, dedicated ledgers, dedicated warehouses, and dedicated control according to higher standards.