6 Monthly Bag House Inspection
This procedure outlines the steps for a 6 Monthly inspection of the Bag House, including pre-inspection safety checks, visual and operational checks, compressed air system inspection, drum and material handling, general inspection, and post-inspection documentation.
Hexham NSW - Valmont Coatings - APAC
07/02/2025
6 Monthly Bag House Inspection
This procedure outlines the steps for a 6 Monthly inspection of the Bag House, including pre-inspection safety checks, visual and operational checks, compressed air system inspection, drum and material handling, general inspection, and post-inspection documentation.
Visual and Operational Checks
Check for any visual alarms on top of cabinet
Record Differential Pressure (dp) from magnehelic gauge
Meter name
Unit
Is the Differential Pressure within the nominal operating range of 0.6kpa to 1.1kpa?
Inspect and record Hopper Temperatures
Inspect and Ensure Hopper heating element is working correctly
Check inside walls of hopper is clean, and there is no build up.
Check for excessive build up on outside of the filter bags.
Check that moisture not present in filter bags.
36. Check there are no leaking or broken filter bags.
Dismantle and check diaphragm valves (RCA-45) for cracks or leaks 35 off
Check all wiring to solenoids (Goyen 24 volt) are in good condition and securely fastened.
Inspect if required Clean-air chamber inspection
Is there ingress of water from pipe work or hatches, Report if there is ingress of water from pipe work or hatches.
Check hopper door seals correctly.
Check fan belts, bearings, check condition of pulleys, belts, adjust belts, replace if required. (belts 3 x PMG – SPC 3750)
Inspect and record No. 1 Plummer block bearing Temperature
Meter name
Unit
Inspect and record No. 2 Plummer block bearing Temperature
Meter name
Unit
Inspect and record Electric motor Temperature
Meter name
Unit
Grease bearings on fan bearing blocks, check level in lubricator if fitted.
(Electrician only) Check condition of main control panel wiring, and components.
(Electrician only) Check condition of wiring to fan motor, and other ancillary equipment.
Trigger the pulse valves are controlled to fire when DP reaches the high set point, and turn off when DP reaches low set point. To trigger the firing, move the upper set point (red) needle on the magnehelic down to below the black needle, after pulse firing is proven, move the set point needle back to its original position.
Check Fume hood rubber seals and door closure to ensure no emissions leaking
Compressed Air System
Record compressed air pressure
Meter name
Unit
Check compressed air system for leaks and organize repair if required
Check compressed air filter trap and drain water if required
Inspect Compressed Air dryer to ensure system is working correctly.
Check condition of air lines (6mm) to Magnahelic gauge, for leaks or damage. Damaged, or leaking, can lead to incorrect DP readings.
Drum and Material Handling
Check drums for moisture and level, replace if required
Inspect Ash Drum connection to Bag House sealing to drum. Rain can run down the side of the Bag House, and the suction can draw water into Bag House causing damage. Check for holes in lid. Additional plastic may be required.
General Inspection
Check for any abnormal noises, leaks, or vibration
Ensure all guards and covers are in position
Is the Ladder and handrails, access ways clear and in good condition?
Check Stairwell, and structure condition for any potential corrosion, or issues.
Check Duct Work condition for corrosion, or leaks.
Ensure any usage of lime is recorded
Check condition of discharge valve to ash drums, ensure free moving, and not seized.
Post-Inspection
Comments / Issues
Signature
Click here to sign
Source: Hexham NSW - Valmont Coatings - APAC (Community Member)