The phrase "avoid tampering" is correct and usable in written English.
You can use it when advising someone to refrain from interfering with or altering something, often in contexts related to security or integrity.
Example: "To ensure the integrity of the data, please avoid tampering with the files."
Alternatives: "prevent interference" or "refrain from altering".
That could set off a partisan political cat fight as Congress and the White House struggle to avoid tampering with the so-called Social Security lockbox.
In August 2014 President Ellen Johnson Sirleaf decreed that the bodies of Ebola victims be cremated: "this measure is intended to avoid tampering with the dead and contaminating water sources", she said.
If all goes accordingly, doctors will up their efforts to screen possible patients, and prescriptions will be faxed directly to the pharmacy, to avoid tampering with the prescription.
A few weeks after signing Shero, the Rangers gave the Flyers their first-round pick in the 1978 draft (Ken Linseman) and cash as compensation, allowing the Rangers to avoid tampering charges.
Even in unilateral cases, some patients wish to avoid tampering with the limbus of their unaffected eye.
If you see no light on the screen with or without sound, avoid tampering with the television or cable box.
The government avoided tampering with some socially sensitive issues like unemployment benefits: Joblessness here has soared to 23 percent, more than double the European average.
In particular, it can be observed that the wide-band, time-localized tampering is better reconstructed using the 1D-DCT basis, which is able to capture tampering correlations only along the frequency axis, avoiding tampering discontinuities over time.
From this perspective, avoiding tampering does not mean avoiding fixing problems.
When the Buccaneers lost and Dungy was fired Monday night, it seemed only formalities -- and an attempt to avoid league tampering rules -- were keeping Parcells from being named the coach.
In part, he is merely following rules and avoiding a tampering charge.
