Heavy Transport
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Hazardous Material Violation
General None Reported / Taken
Human Factors
Upon a Cat 1 approach into ZZZZ; we taxied to the gate. Upon arrival the ground crew opened the smoke curtain and immediately came to the flight deck informing us the hazmat can door was not properly secured and resting against the smoke curtain. I remember the hazmat can inspection very well. We had a lot of hazardous materials and a lot of separation issues but all were complied with; the hazardous materials folder was in compliance and the hazmat can was properly secured to line 2. I watched the handlers in ZZZ1 zip up the smoke curtain properly and properly secure the 9 G net. I did my final cabin preparation and flew to ZZZZ uneventful until the ground crew informed us that the door to the hazmat can was not attached.Cause: I never in a million years would have thought I need to make sure the door is secured to the hazmat can. We check the can; check the hose; watch the smoke barrier and 9 g net but I should watch them attach the door. This is a busy time of flight when we were getting the final and checking numbers but the safety concerns surpass all. Suggestions: Find time or wait and watch the hazmat can door being closed and secure. We had a full load of hazmat with incompatibles that had the correct spacing but all is mute if the door is not attached. From now on; I will watch the door being attached and check it is secure before they close the curtain and net.
After landing off load crew reported that the Hazmat can door was not attached and was found leaning against the smoke barrier net. Halon hose was attached to the Hazmat can. All hazardous material was still secure and tied down. Hazmat door was not in place or secured.Cause: Load crew in ZZZ1 did not attach Hazmat can door.Suggestions: Training. Follow up inspection. Change post load procedures.
Air Carrier flight crew reported being notified on arrival by ground crew that the Hazmat can door was not properly secured.