All brake systems default to manual function when something goes haywire with the electronic enhancements, which is why the brakes seem to work just fine. Slam on the brakes hard and I bet they lock up, which is not what should happen. More From Popular Mechanics. The likely culprit is one of the ABS wheel-speed sensors, a pinky-size part that detects the teeth of the tone ring.
Unless you are recording actual release detection results at least every 30 days and maintaining records for at least 5 years, you are not doing leak detection.  Keep all records of calibration, maintenance, and repair of your release detection equipment for at least 5 years.eep These O&M Records  Keep your manual tank gauging records for at least 5 years. Unless you are recording actual release detection results at least weekly and every 30 days and maintaining records for at least 5 years, you are not doing leak detection right.
If the total amount you are claiming is $300 or less, you do not need to keep receipts, but you must be able to show how you worked out your claims. You need to keep written evidence of your work-related expenses for five years from the due date for lodging your tax return. If you lodge your tax return after the due date, the five years start from the date you lodged your tax return. For a depreciating asset, you must keep records for five years from the date of your last claim for decline in value (depreciation). Last modified: 05 Oct 2016QC 26103.