National Drilling Services

Choosing the Best Diamond Core Drilling Contractor in Manchester/North West

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Introduction

Diamond core drilling is a process which uses diamond-tipped drill bits to extract cylindrical samples from rock, stone or concrete and/or form service holes.  Diamond core drilling is commonly used for building projects, engineering works, bollards and more. In this article, we’ll discuss what diamond core drilling involves and provide tips on how to select the best contractor for your next project.

What is Diamond Core Drilling?

Diamond core drilling involves using a core drill bit tipped with industrial diamonds to cut circular holes through surfaces like rock, concrete or stone. The drill operates by rotating at high speeds while applying pressure. As it cuts, the core sample is held within a core liner which is slowly extracted to retrieve intact specimens or perfectly formed service holes. These samples allow experts to analyse the material’s characteristics and properties. Diamond core drilling can be carried out using a handheld or rig-mounted motor powered by hydraulic, air or electricity depending on the needs of the customer and/or environment.

 

When is Diamond Core Drilling Needed?

Common scenarios where diamond core drilling is required include assessing ground conditions for new building foundations, service holes for cables, waste and water pipes, ventilation such as extractor fans/aircon units and bollard/handrail installations. The intact cores extracted provide a wealth of data on the material’s structure, strength, porosity and re-bar sizes.

 

Choosing a Diamond Core Drilling Contractor in Manchester/North West  

When scouting for a contractor, safety should be the top priority. Check their safety procedures, certifications like CHAS or SSIP, and appropriate insurance. Experience and a strong reputation within the industry are also important – ask for client references. Consider if their drilling rigs are suitable for the required depths, diameters and material. Good contractors also offer high-quality core sample extraction, and testing services. Thoroughly inspect completed projects and estimates.

 

Top Tips for Finding the Best Contractor

Getting referrals from other companies, developers or well-established companies is advisable. Additionally, look for accreditations like CHAS, Constructionline and Safecontractor along with membership to the DSA. Compare quotes from three or more contractors and be sure to confirm all timescales and any expected difficulties.

 

Manchester/North West Diamond Core Drilling Case Study

The contractor was engaged to diamond core drill test cores using over coring technique whilst sensors were in place to take in-situ stress measurements. This was done by monitoring the stress cell throughout the over-coring process using a 7mm cable which passes through the drill rods, the rig motor and the water swivel to a data logger or reader.

 

Costs to Consider

Day rates for rigs and crews usually range from £300 – £1,000 depending on the scale and location of work—sample extraction, testing services and storage/transport costs also factor in the overall budget. Additional charges may apply for working at heights, night shifts or weekend work. It’s wise to acquire fixed-price quotes covering all requirements to simplify budgets.

 

Hiring Process and Tips

When requesting tenders, provide thorough details outlining drilling locations, depths, sample requirements and timelines. Ask for contractors to demonstrate experience with comparable recent projects. Thoroughly assess their detailed proposals, risk assessments and health and safety plans to ensure due care and good practices. Allow sufficient time for planning applications and permits before major works commence.

 

Here are some key safety procedures to look for when choosing a diamond core drilling contractor:

 

  • Risk Assessments and Method Statements – They should carry out site-specific comprehensive risk assessments and have documented method statements for all drilling works.
  • Personal Protective Equipment – Contractors should provide appropriate PPE like hard hats, high-vis vests, safety boots, ear defenders, gloves, and protective eyewear.
  • Drill Rig Safety – Rigs should have guards on moving parts, and emergency stops, and be fit for purpose with inspections/maintenance logs.
  • Electrical Safety – Any generators or electrical motors require inspection by qualified engineers, P.A.T Tests and RCD protection where necessary.
  • Dust and Noise Controls – Dust suppression systems, silenced generators/enclosures and regular noise level monitoring protect worker health and safety.
  • Permit to Work – A permit system with sign-off is required for hazardous jobs like confined space work or drilling near services.
  • Lifting Plans – Competent persons must supervise lifting and rigging activities with documented lifting plans supplied by the main contractor.
  • Welfare and First Aid – Main contractors must provide adequate welfare facilities, first aiders and first aid kits on larger worksites.

 

Training – Workers should hold CSCS/CPCS cards and regular refresher training in manual handling, working at height and asbestos awareness. Labourers should work alongside a fully trained NVQ level2 operative, with all supervisors having correct and recognised training such as SSSTS.

 

Conclusion

Choosing a professional, safety-conscious diamond core drilling contractor with a proven track record is paramount for successful project completion. Comparing tender proposals from various contractors’ relevant credentials will help identify the best match for your needs and ensure staff are competent and fully trained   With the right contractor on board, invaluable data for assessments and designs can be acquired.

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