Document Overview:

The document appears to reference ultrasonic testing (UT) procedures related to multilayer units and bridge components, with a specific time duration mentioned (11 hours) for a certain number of units.

Key Sections and Information

1. Testing Duration and Units

• Reference to "Below 3 units bridge (11 hours)" suggests a testing or inspection timeframe allocated for up to three bridge units.
• Mentions of "UT Multilayer" indicate ultrasonic testing applied to multilayer components, though the exact number of units is unspecified or missing.

2. Ultrasonic Testing (UT) Multilayer Units

• Two entries for UT Multilayer units bridge are noted, but the exact unit counts are not provided (indicated by placeholders or missing data).
• This implies multiple multilayer units undergo ultrasonic testing, possibly with different quantities or configurations.

Summary and Recommendations

• The document fragment lacks complete data on unit counts and detailed procedures.
• For clarity and effective planning, it is critical to specify the exact number of units for each testing batch.
• Including detailed testing parameters, acceptance criteria, and procedural steps would enhance the technical value.

Note: Due to incomplete data and placeholders, a comprehensive summary is limited. Further detailed documentation is recommended for full procedural understanding.