Information
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Document No.
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Audit Title
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Conducted on
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Prepared by
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Location
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Personnel
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Volumes produced
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Products produced
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Operational hours
Technical Performance
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Check Previous Internal and External Technical Audit Actions
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How does the plant ensure only approved materials are used in the product (approved material list available?)
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Batching Accuracy Reports for Water, Cement, Admixtures. Variance % batched verses target,
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Workability control, standard concrete should be within +- 20% <br>
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Aggregate Supply review: Supply agreement in place - what are the terms / specifications: Moisture and grading, how is this checked?
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Stock Control review:<br>Last 12 months stock records, variances of over 3%, records of investigations. <br>Check for trends in stock losses and gains.<br>Cement, Aggregate, Admixture and Fibres
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Slump control KPI: Each load should be within 20% of target
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Concrete returned to site due to plant error: volumes m3
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Strength results and SD
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Records of complaint, details of investigations and follow actions?
Plant Maintenance
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Plant can provide details of Plant Checks completed?
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Can the site provide details of Outstanding Defects?
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Details and records of completed defects
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Details and records of Mandatory Inspection and Tests
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Planned maintenance and servicing
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Pre start check: how does the site ensure that the plant is safe and ready to operate?
Plant Performance
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Water usage total and by cubic meter (below 100 litres per m3 is good, above 300 litres is poor)
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Electricity usage total and by cubic meter
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Waste created total
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KPI and target for availability
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KPI and for reliability?
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Plant on budget for maintenance spend?
Waste Water and Permits
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What are the sources of waste
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Cementitious and Aggregate Waste: how is returned concrete managed, how is washout waste managed
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Does the site hold relevant records of waste removed from site?
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Does the site have detailed water management plan? Permits and records kept
Safety
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Does the site have job specific risk assessments for tasks being undertaken, is there evidence of staff involvement, is there evidence of control measures being put in place?
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Examples of risk assessments and how staff undertaking tasks are involved
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Add media
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How are major hazards controlled: permits to work system?
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Add media
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Does the site have a COSHH system covering substances held on site?
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Energy safety, have isolators been individuals marked, is there a way of identifying what the each isolator isolates. Do the isolators have a regular check system.
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Noise and dust: has the noise and dust been assessed with areas marked as potentially hazardous
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PPE: issue logs in place, do staff have PPE to match the COSHH and noise / dust assessments
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Are the risks of legionaries covered?
Material Handling
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Stock bays: good condition, labeled, no signs of contamination
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Agg bins: labeled, signs of build up, contamination, moisture probes fitted correctly and activated
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Conveyors: Excessive build from spillage? Emergency pull wires in place
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Ground hopper - signs of build up?
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Cement silos: inlets labeled, anti whip arresters fitted, auto shut offs fitted, prvs clean, no spillage, fitters clean and inspected annually
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Admixtures storage: bunded, frost protection, labeled, no signs of contamination, age of admixtures recorded, deliver notes kept, admixture agitated
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All Calibration points identified.
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Weigh hoppers: clear after every load, load cells clean, free moving?
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Is recycled water used? Suspended solids?
Mixing and discharge
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Batch console labeled, any calibration security available/ event numbers / stickers
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Check batch record printouts: water design vs target vs actual, trim, water in truck, moisture calculations
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Is the batching system linked for recipes - if so what happens when the link is down?
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Mixer: signs of build up, tips adjusted? Mix washout in good condition? Isolation system in good working order?
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How long does the mix spend in the mixer? Is there an ammeter fitted, is it used to measure slump?
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Can you see in the back of the truck / discharge point?
Housekeeping
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Are walk ways clean and clearly marked?
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Are work areas clean and tidy?
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Are storage areas clean and tidy?
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Are welfare areas clean and tidy?
