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The differences between petroleum inspectors and senior inspectors can be seen in a few details. Each job has different responsibilities and duties. Additionally, a senior inspector has an average salary of $53,511, which is higher than the $48,415 average annual salary of a petroleum inspector.
The top three skills for a petroleum inspector include regular communication, API and ladders. The most important skills for a senior inspector are asphalt, traffic control, and construction inspection.
| Petroleum Inspector | Senior Inspector | |
| Yearly salary | $48,415 | $53,511 |
| Hourly rate | $23.28 | $25.73 |
| Growth rate | -3% | -3% |
| Number of jobs | 17,162 | 16,842 |
| Job satisfaction | 3 | - |
| Most common degree | Bachelor's Degree, 32% | Bachelor's Degree, 37% |
| 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.
In the manufacturing industry, a senior inspector is responsible for performing quality assurance procedures to ensure that products adhere to the company's standards and regulations. Among their responsibilities include gathering and analyzing data to study product specifications, performing various examinations and product assessments, identifying issues and inconsistencies, and providing advice to staff as needed. Besides conducting regular inspections, they must also produce progress reports, provide technical guidance and support, and develop quality assurance strategies. Moreover, as a senior inspector, it is essential to lead and serve as a mentor to junior inspectors while enforcing the company's policies.
Petroleum inspectors and senior inspectors have different pay scales, as shown below.
| Petroleum Inspector | Senior Inspector | |
| Average salary | $48,415 | $53,511 |
| Salary range | Between $29,000 And $78,000 | Between $35,000 And $80,000 |
| Highest paying City | Linden, NJ | Newington, CT |
| Highest paying state | Connecticut | Connecticut |
| Best paying company | Intertek | PBF Energy |
| Best paying industry | Technology | Technology |
There are a few differences between a petroleum inspector and a senior inspector in terms of educational background:
| Petroleum Inspector | Senior Inspector | |
| Most common degree | Bachelor's Degree, 32% | Bachelor's Degree, 37% |
| Most common major | Business | Civil Engineering |
| Most common college | - | - |
Here are the differences between petroleum inspectors' and senior inspectors' demographics:
| Petroleum Inspector | Senior Inspector | |
| Average age | 45 | 45 |
| Gender ratio | Male, 95.7% Female, 4.3% | Male, 88.6% Female, 11.4% |
| 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, 12.2% Unknown, 4.4% Hispanic or Latino, 19.9% Asian, 8.8% White, 54.0% American Indian and Alaska Native, 0.8% |
| LGBT Percentage | 4% | 4% |