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The differences between petroleum inspectors and quality assurance inspectors can be seen in a few details. Each job has different responsibilities and duties. Additionally, a petroleum inspector has an average salary of $48,415, which is higher than the $36,842 average annual salary of a quality assurance inspector.
The top three skills for a petroleum inspector include regular communication, API and ladders. The most important skills for a quality assurance inspector are calipers, micrometers, and corrective action.
| Petroleum Inspector | Quality Assurance Inspector | |
| Yearly salary | $48,415 | $36,842 |
| Hourly rate | $23.28 | $17.71 |
| Growth rate | -3% | -3% |
| Number of jobs | 17,162 | 74,410 |
| Job satisfaction | 3 | 3 |
| Most common degree | Bachelor's Degree, 32% | Bachelor's Degree, 34% |
| Average age | 45 | 45 |
| Years of experience | - | - |
Petroleum Inspectors are responsible for examining petroleum shipments to ensure they meet contract specifications. Their duties include examining samples during petroleum tank transfer for water or discoloration, withdrawing samples from the petroleum tank, and conducting laboratory analysis on bottled, stored samples. They also use calibration tables to quantify consignments and sounding shore tanks using steel tape. Petroleum inspectors may conduct calibration on meters and tanks. Petroleum inspectors ensure that shipments passing through adhere to performance and safety regulations.
Quality Assurance Auditors are employees who ensure the adherence of other employees to company processes and guidelines. They are expected to be experts on quality assurance processes and procedures. They also have in-depth knowledge of the expected outcomes of such processes to ensure that the company only provides quality products and services. Quality assurance auditors are also familiar with regulatory laws and policies of governing bodies that oversee companies in their particular industry. They ensure that their companies are compliant and may conduct random quality checks every now and then.
Petroleum inspectors and quality assurance inspectors have different pay scales, as shown below.
| Petroleum Inspector | Quality Assurance Inspector | |
| Average salary | $48,415 | $36,842 |
| Salary range | Between $29,000 And $78,000 | Between $27,000 And $49,000 |
| Highest paying City | Linden, NJ | Renton, WA |
| Highest paying state | Connecticut | Washington |
| Best paying company | Intertek | Los Alamos National Laboratory |
| Best paying industry | Technology | Government |
There are a few differences between a petroleum inspector and a quality assurance inspector in terms of educational background:
| Petroleum Inspector | Quality Assurance Inspector | |
| Most common degree | Bachelor's Degree, 32% | Bachelor's Degree, 34% |
| Most common major | Business | Business |
| Most common college | - | - |
Here are the differences between petroleum inspectors' and quality assurance inspectors' demographics:
| Petroleum Inspector | Quality Assurance Inspector | |
| Average age | 45 | 45 |
| Gender ratio | Male, 95.7% Female, 4.3% | Male, 71.7% Female, 28.3% |
| Race ratio | Black or African American, 13.6% Unknown, 4.2% Hispanic or Latino, 24.0% Asian, 7.7% White, 49.6% American Indian and Alaska Native, 0.7% | Black or African American, 11.0% Unknown, 4.7% Hispanic or Latino, 21.2% Asian, 9.1% White, 53.2% American Indian and Alaska Native, 0.8% |
| LGBT Percentage | 4% | 4% |