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Job Opportunity at Petra Diamonds, Technician: Control and Instrumentation

Petra Diamonds

Petra Diamonds is a leading independent diamond mining group and an increasingly important supplier of rough diamonds to the international market. The Williamson Diamond Mine is situated 23 kilometres northeast of Shinyanga in Tanzania.

Applicants are invited to apply for the existing position mentioned above.

Position Title: Technician: Control and   Instrumentation

Location: Williamson Diamonds Limited, Mwadui, Shinyanga

Grade:               D1

Report:              Chief Engineer

Role Description: Reporting to the Chief Engineer, the role is responsible for the installation, maintenance, fault finding and repair of process instrumentation, control elements, control systems and application specific electronic equipment within the control and instrumentation (C & I) discipline.


  • Provide subject matter expertise and skills in area of responsibility; advising on solutions to enhance or ensure the effectiveness of the department/section,
  • Install and maintain radiation equipment (X-Ray Diamond Sorters) according to maintenance schedules and requirements.
  • Install and maintain communications networks.
  • De-energise and apply the lock-out procedure as per Company policy.
  • Carry out repairs, maintenance and preventative maintenance work on all C & I equipment and related control systems to comply with product technical specifications.
  • Attend to the relevant administrative functions, such as data pack documentation management. (Loop drawings, P&ID’s etc.
  • Execute C & I projects in line with accepted project management principles to enhance, improve and optimise operations.
  • Continuously analyse equipment efficiencies to recommend or implementing improvements and changes to maximise operations.
  • Co-ordinate and monitor equipment availability to ensure adherence to production parameters.
  • Co-ordinate the monitoring, installation, service and reconditioning of a variety of equipment, instruments and control systems.
  • Monitor the implementation of new equipment and systems, taking specifications in consideration.
  • Investigate and diagnose problems and breakdowns to determine resource requirements and order spares
  • Take cognisance of and adhere to Company policies, procedures and relevant legislation. Manage and report on non-compliance issues.
  • Model behaviour that is consistent with the Company Safety, Health and Environment Vision and Values. Manage and report on non-compliance issues.
  • Perform risk assessments (General and Mini).
  • Establish and maintain good working relationships and effective / sound communication systems within the Engineering Function and operation.
  • Effective team player and effective self-management Minimum Requirements:
  • Ordinary Diploma OR Bachelor of Engineering in one of the following fields: Computer Engineering, Electrical Engineering, Electronics and Telecommunications Engineering.

Minimum requirements for all applicants:

  • A minimum of 8 years’ relevant experience in the Control & Instrumentation (C & I) discipline.
  • Strong technical skills.
  • Computer Literacy and Microsoft Office Suite
  • Driver’s license

Advantageous Requirements:

  • Experience with Siemens TIA Portal and WinCC software.
  • Experience with Profibus/Profmet and industrial Ethernet networks.
  • AutoCAD and/or MS Visio experience.
  • Experience with diamond sorting equipment using X-ray media separation techniques.

Technical Competencies

  • Read, interpret, and maintain instrumentation drawings.
  • Install and maintain process instruments and control elements.
  • Calibrate process instruments.
  • Install and maintain application specific electronic systems.
  • Perform advanced fault finding and repairs.
  • Knowledge of PLC and SCADA systems and networks.

PLEASE NOTE: Petra Diamonds is currently aligning its organisational structure to the operational model therefore all job titles and job profiles are under review. This may influence the grading of the position.

Candidates meeting the requisite qualifications should submit their applications describing how they qualify for the positions. They should also send detailed CV, copies of certificates, three referees, daytime telephone numbers and e-mail addresses before 26th November, 2021 at 16hrs00. Via the following address:

Human Resources Manager,

Williamson Diamonds Ltd,

P.0. Box 23,


Or drop the same through the following email: joseph.makoro@petradiamonds.com cc e1-recruitment@petradiamonds.com

NB: Please complete an external job application form available www.petradiamonds.com/careers/current-vacancies).

Williamson Diamonds Limited supports the Mineral policy (2009) of Tanzania and is committed to ensure adequate development of local technical capacity to service the mining industry; and to employ local experts available and develop succession plans for Tanzanians to take over expatriate positions. Pre-screening, profile testing, on mine assessments, medical and security clearances form part of the minimum requirement and selection process. Short listed candidates will be required to attend a panel interview. Employment of the successful candidate is subject to passing on mine induction and the aforementioned criteria.

If you do not hear from us after 30 December, 2021 please consider yourself unsuccessful. Williamson Diamonds Limited is an Equal Opportunity Employer.

Please note that Petra Diamonds does not at any time require any form of payment for recruitment purposes. If you are approached in this regard, you should report the incident immediately via one of the following hotlines: Phone Call: +255 28 276 3872 +255 767 744 617; Email: wdlhelpdesk@petradiamonds.co.tz.

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