Vuba aha, Twari twakoze igenzura rya Nondestructive penetrant test (PT) kubushakashatsi bwa chrome buhanitse dukurikije ibyo abakiriya bakeneye,Intambwe ni as ikurikira：
1. Sukura hejuru yatunganijwe
2. Shira umutuku winjira
3. Sukura umutuku winjira
4. Sasa umutezimbere wera, uwiteza imbere ntagaragara nkumutuku, kubwibyo rero nta nenge kuri iyi casting.