# Chemical Reactor Pre-Charge Checklist > Source: https://netray.co/tools/chemical-reactor-pre-charge-checklist > Publisher: Netray (netray.co), AI and integration engineering for ERP and manufacturing systems. > Section: Free Tools ## Short answer A pre-start checklist an operator can walk through before charging a batch reactor, with critical items flagged. ## Category ehs-workforce ## Industry Chemical Manufacturing ## Audience - Shift supervisor - Process operator - EHS manager ## Tool **Kind:** checklist **Groups:** #### Vessel condition and line clearance **Items:** **Text:** Previous batch is closed out and the vessel is emptied as required **Critical:** true Cleaning is complete and the cleaning record is signed **Text:** Vessel is visually inspected for residue, water and foreign material **Critical:** true Previous product label and status tags are removed Agitator turns freely and the seal system is filled **Text:** Bottom outlet valve is closed and locked or sealed per procedure **Critical:** true **Text:** No open work permits remain on the vessel or connected lines **Critical:** true #### Isolation and utilities **Items:** **Text:** Lines to other vessels are blanked or double isolated **Critical:** true Utility connections for cooling and heating are verified and flow tested **Text:** Nitrogen supply and pressure are available if inerting is required **Critical:** true **Text:** Vessel oxygen level is confirmed below the batch limit when required **Critical:** true **Text:** Vent line and scrubber are open and in service **Critical:** true Cooling water or brine temperature is within the batch limit Steam trap and condensate return are clear #### Instruments and safety systems **Items:** **Text:** Temperature and pressure transmitters read plausible values and are in calibration **Critical:** true Level indication is checked against a known reference **Text:** High temperature and high pressure alarms are active with correct set points **Critical:** true **Text:** Rupture disc or relief valve is in place, in date and not isolated **Critical:** true **Text:** Emergency stop and quench or kill system are tested and available **Critical:** true Charge flow meters or load cells are zeroed and checked Control system recipe version matches the approved master #### Materials and documents **Items:** **Text:** Batch record is the current approved revision **Critical:** true Raw material lots are released and match the batch record Quantities are verified by a second person **Text:** Material compatibility is checked against the charge sequence **Critical:** true Safety data sheets are available at the point of use **Text:** Charge order and addition rates are understood by the crew **Critical:** true Required PPE is available and in good condition Emergency shower, eyewash and spill kit are accessible and checked **Scoring Note:** All items marked critical must be confirmed before the first material is charged. If any critical item fails, stop and escalate to the shift supervisor. ## Content **Intro:** Most batch incidents start before the first drum is charged. This checklist walks an operator through vessel condition, isolation, instruments, safety systems and documents, and marks the items that should stop the batch if they fail. **Sections:** #### How to use it **Body:** Print or export the checklist and complete it at the vessel with the shift supervisor. Tick each item as it is verified by observation, not by memory. Critical items are flagged. If one cannot be confirmed, do not charge. Attach the signed list to the batch record so that a later review can see what was verified and by whom. #### What the groups cover **Body:** The four groups follow the usual failure paths. Vessel condition and line clearance prevent contamination and incorrect residues. Isolation and utilities prevent accidental transfer and ensure inerting and venting. Instruments and safety systems confirm that the plant can detect and control a deviation. Materials and documents confirm that the right chemicals, in the right order, are used. **Bullets:** - Cross-contamination and mix-up - Loss of cooling or inerting - Blocked vent or isolated relief device - Wrong revision or wrong lot #### Adapting it to your site **Body:** This is a generic starting point. Your own process hazard analysis, permit to work rules and batch master determine what is mandatory. Add product-specific items such as hold times, moisture limits or catalyst handling steps, and remove any that do not apply. Review the list after any incident, near miss or change to the process. **Bullets:** - Link items to written operating procedures - Review after management of change events - Keep the signed record with the batch file - Train new operators with the list before first use **Cta:** If you want pre-start checks tied to production orders and approvals in your ERP or MES, Netray can review the workflow with you. Ask for a quick call. **Faq:** #### Is this checklist enough for regulatory compliance? **Answer:** No. It is a practical starting point for operators. Compliance depends on your jurisdiction, process safety management program, permits and site procedures. Use it alongside your formal documented procedures. #### Who should sign it? **Answer:** The operator who performs the checks and the shift supervisor who reviews it. For high hazard batches, add a second person verification for critical items such as isolations and charge quantities. #### Why are some items critical? **Answer:** Critical items are those whose failure can directly lead to loss of containment, runaway reaction, ignition or major contamination. They must be confirmed before charging. Your own hazard analysis may mark different items. #### Can I add my own items? **Answer:** Yes. Export to Word or Excel and edit. Add vessel-specific checks, product hold points and local regulatory steps. Keep the list short enough to be used in practice, not skipped. ## Search terms reactor pre-start checklist, batch reactor charging checklist, chemical plant pre start up safety review, reactor readiness checklist, operator checklist chemical batch, reactor line clearance, batch charging verification --- Talk to an engineer: https://netray.co/contact?intent=erp_ai | Machine catalog: https://netray.co/agent/catalog.json