The ‘double insurance’ of bolt hole quality inspection
Our factory’s quality inspection department implements a “double person double inspection” system for bolt holes: two self inspectors independently inspect and cross check, and the data error rate needs to be controlled within 3%. Since the beginning of this year, the system has successfully intercepted 8 batches of unqualified bolt holes, avoiding economic losses exceeding 1.5 million yuan.
Bolt holes are the ‘lifeline’ of flanges, and even a slight mistake can lead to a leakage accident, “emphasized Wang, the quality inspection supervisor. On the workshop wall, a real-time updated electronic screen displays the daily quality inspection data: the two person inspection consistency rate is 99.5%, and the bolt hole problem rectification rate is 100%.
Post time: Jul-07-2025