6 Quality Assurance

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Author:
oneill_ie
ID:
157422
Filename:
6 Quality Assurance
Updated:
2012-06-05 16:39:48
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QA
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Description:
QA
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  1. QUALITY ASSURANCE in CONSTRUCTION
    • A contractor’s quality actions in a traditional procurement route (independent designer) would include the following:
    • 1. Receive tender documents. Carry out tender review. Prepare QA submission
    • 2. On award of contract, carry out contract review
    • 3. Set up site team
    • 4. Prepare Project Quality Plan (PQP) and submit for approval
    • 5. Conduct suppliers and sub-contractors assessment and appraisal
    • 6. Place sub-contracts including QA conditions where appropriate to work package. Include requirement for documentation submissions, approvals and records
    • 7. Receive Detailed Quality Plans (DQP’s) from sub-contractors for approval prior to work commencing
    • 8. Prepare DQP’s for main contractor’s work
    • 9. Place “hold points” on DQP’s to monitor work packages. Approve DQP’s
    • 10. Monitor off-site work against DQP’s
    • 11. Carry out goods inward inspections to agreed procedure
    • 12. Carry out plant inspection to agreed procedure
    • 13. Control work on site against PQP and DQP’s
    • 14. Audits on and off site to agreed audit schedule
    • 15. On-going contractor and sub-contractor evaluations
    • 16. Generate records as construction proceeds
    • 17. Mark up as-built drawings
    • 18. Prepare handover packages and submit
  2. DEFECT CONTROL
    PDCA
    • 1. Design
    • · Details
    • · Materials
    • · Build ability
    • 2. Quality Plan for the project ISO 9001 Quality
    • · Sub Contractors have to sign up to quality plan
    • 3. Communicate the plan
    • · Planning of the work
    • · Stage Checks - Before close up checks
    • · Procedure for corrective actions
    • · Handover procedures – Test & commission
    • 4. Evaluation
    • · Lessons learned for next project
  3. PRODUCTION MANAGEMENT
    • · Production Organisation
    • · Construction Planning
    • · Types and Stages of planning
  4. · Preparation of Construction Programmes
    Types :
    Bar Charts (Gantt charts)

    • Advantages:
    • Show sequence & easily understood,
    • Easily updated (PC),
    • Milestones can show critical dates (deliveries, delays), Can show resources

    • Disadvantages:
    • Sometimes wishful thinking,
    • do not highlight interdependencies.
    • Complex interrelationships difficult to represent
  5. Linked Bar Charts overcome this weakness
    • 1. Finish to start relationships- Task A must finish before task B starts
    • 2. Start to start relationships- After completing Task A, Tasks B & C may begin at the same time
    • 3. Overlapping relationships – 2 weeks after starting task A, task B can start. 3 weeks after starting Task B Task C can start
    • .4. Finish to finish relationships – Task B must finish 2 weeks after Task A finishes, Tasks C&D must finish at the same time
  6. Network Analysis (activity on the arrow)
    • Advantages:
    • Better planning through logical approach,
    • Identifies critical operations, readily manipulated (PC), Planner can assign priorities (Labour, plant etc.),
    • Time- cost analysis can be carried out.
    • Readily used for cash flow and valuation forecasting

    • Disadvantages:
    • Not easy to facilitate concurrent activities,
    • resistance in small to medium companies,
    • often not understood by site staff.
  7. ·Progress monitoring and Control·
    Cost & Value Control·
    Cash Flow·
    Control of Defects·
    Feedback Analysis·
    Use of technology in the planning process

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