How to Inspect Lead Glass on Delivery (Avoid Warranty Issues)
Proper inspection of lead glass upon delivery is critical for ensuring product quality, preventing installation delays, and maintaining warranty coverage. Because lead glass is a precision radiation shielding product, even small handling issues can affect compliance with project specifications.
This guide explains exactly what to check when your lead glass arrives so you can avoid costly mistakes and ensure compliance with standards such as ASTM C1036 and project-specific NCRP Report No. 147 shielding requirements.
For installation examples and handling demonstrations, you can also view our video resources here:
👉 https://leadglasspro.com/pages/videos
Why Delivery Inspection Matters
Lead glass is manufactured to strict radiation shielding and optical quality standards. Once installed, defects or damage become expensive to correct.
Failure to inspect on delivery can result in:
- Voided or delayed warranty claims
- Project installation delays
- Non-compliance with shielding specifications
- Costly removal and reinstallation
Step 1: Inspect Packaging Before Opening
Before uncrating or unwrapping the glass, inspect the packaging thoroughly.
Check for:
- Crushed corners or frame damage
- Broken crates or pallets
- Signs of impact or puncture
- Improper storage orientation (standing vs flat)
If damage is visible on packaging, document it before opening.
Step 2: Verify Shipment Documentation
Confirm that all documentation matches your order specifications.
- Order confirmation
- Lead equivalency (mm Pb rating)
- Glass size and thickness
- Laminated vs non-laminated specification
This ensures compliance with the shielding design provided under NCRP 147.
Step 3: Check Glass Surface for Visible Defects
Once carefully uncrated, inspect the glass under good lighting.
Look for:
- Scratches or surface abrasion
- Edge chips or corner damage
- Bubbles or inclusions
- Distortion beyond ASTM limits
Lead glass should comply with ASTM C1036 for flat glass quality, including allowable blemishes and optical distortion tolerances.
Step 4: Confirm Lead Equivalency Markings
Each panel should be clearly identified with its radiation shielding rating.
Verify:
- Correct mm Pb rating (e.g., 1.5 mm Pb, 2.0 mm Pb)
- Consistency with project shielding report
- Labeling on glass or documentation
Incorrect shielding values can lead to inspection failure if installed.
Step 5: Inspect Lamination (If Applicable)
For laminated lead glass, check interlayer integrity.
Look for:
- Delamination or separation between layers
- Air bubbles or moisture intrusion
- Edge clarity and seal uniformity
Laminated products should comply with ASTM C1172 safety glazing requirements.
Step 6: Verify Dimensions and Fit Requirements
Confirm all measurements match approved shop drawings.
- Width and height tolerances
- Thickness requirements
- Frame compatibility
Even small dimensional errors can prevent proper installation into shielding frames.
Step 7: Document Everything Immediately
Proper documentation is essential for warranty protection.
Take photos of:
- Packaging condition upon arrival
- Any visible damage
- Labeling and markings
- Glass surfaces under lighting
Submit any concerns immediately before installation begins.
Common Mistakes That Void Warranty Claims
- Installing glass before inspection
- Discarding packaging before documentation
- Failing to report visible damage within required timeframe
- Not verifying mm Pb rating before installation
Most warranty issues occur because inspection steps were skipped.
Relevant Standards
- NCRP Report No. 147 – Structural shielding design for medical X-ray facilities
- IEC 61331 – Radiation protection devices standards
- ASTM C1036 – Flat glass quality requirements
- ASTM C1172 – Safety laminated glass standards
Final Thoughts
Inspecting lead glass on delivery is a critical step that protects both project timelines and compliance outcomes.
By carefully checking packaging, documentation, surface quality, and shielding ratings, you can avoid installation issues and ensure full alignment with NCRP-based shielding design requirements.
Proper inspection not only protects your investment but also ensures long-term safety and regulatory compliance in radiation environments.
Frequently Asked Questions (FAQs)
Do I need to inspect lead glass before installation?
Yes. Inspection before installation is required to maintain warranty coverage and ensure compliance.
What should I check first when lead glass arrives?
Start with packaging condition, then verify documentation and labeling before uncrating.
What standards apply to lead glass quality?
ASTM C1036 for flat glass quality and ASTM C1172 for laminated safety glass.
What if I find damage after installation?
Damage discovered after installation is typically not covered under warranty if inspection was not performed beforehand.
How do I confirm the lead rating is correct?
Check labeling and compare it with the shielding report prepared under NCRP 147 guidelines.
Can I install lead glass if packaging is damaged?
Not until it has been fully inspected and cleared for use.
