What a question!. I'm not sure that I can offer any answers.
Who was it who allocated that topic to you? If a member of the Fort Hare faculty, then perhaps you should ask them for advice/support.
If it's something that you've thought of doing, then one needs to think in terms of the size of the thesis as prescribed by the University Regulations, and the length of time available to complete it, and what the financial and other costs are likely to be. Once again, the staff of the faculty would be best placed to help.
Mbulelo - at the end of the day most public health topics are researchable. You need to do at least an initial literature search and appraisal around procurement and look for the initial knowledge-gaps - whether that be nationally or internationally. The gaps should also give you some indication as the most appropriately methodology and design to adopt. Christopher is correct, also, in terms of establishing how your chosen topic would fit with institutional HDR procedures and your supervision team.
Year, it seems to be researchable OK... There would be thousands of approaches how to do it. In my country (Czech Rep.) the hot topic now is if intial price should be the primary criterion in procurement.
This is a topic that can be classed under heath system in Public Health. Yes, this is researchable, but what really counts is the method of approach (methodology) in achieving your planned objectives. For a start, this will be best carried out qualitatively.
I have just submitted a paper to JASA on ISO estimations of noise-induced hearing impairment. You might want to read this paper and follow up on the topic because it is necessary that procurement of new industrial equipment have the requirement of acceptable noise levels for the protection of workers' hearing.