DSS-M.04.03 — Pellet / BB Impact Signature

A pellet/BB impact is a high-velocity, localized strike that produces a central crater/divot and may initiate radial cracking or a bullseye/star pattern depending on glass type and energy. Classification here is appearance-only per VIS (method-agnostic). Inspect under VIS lighting/geometry, after Non-Invasive Reveal, and record surface numbering and worked-surface status on Forms: Active cracks/star networks are integrity indicators → CAT-5 (out of in-place scope).

• Central impact crater with a bright rim; may show peppered satellites near the origin.
• On annealed/laminated, can present radial arms / partial bullseye; on tempered, may show local spall or escalate to full fragmentation (document separately if so).
• Distinct from hot-particle fields by its singular origin and impact geometry (not distributed speckling). Use raking light + oblique sweep to develop edge contrast.

Surface-catch class (MSRT)

• Shallow pellets may read SC-1 (slight); pronounced craters show SC-2 (clear) at the rim. Perform one light, non-marring pass only; polymer stylus preferred on suspected coated faces. MSRT supports classification, not acceptance.

Visual signature

• Localized pit/crater with bright, rough flanks; if radial arms or a running crack are present, treat as integrity (see CAT mapping).

Viewing / lighting

• Evaluate clean & dry at 12 / 36 / 72 in, normal incidence and oblique sweep (~60°-120°) with raking light per VIS.

Location / access

• Record pane ID and surface numbering (#1-#4; laminate-internal). Use parallax to rule out between-pane look-alikes (e.g., cavity fines/marks); fixed parallax indicates a between-pane condition (CAT-5 by location).

Assign category by appearance + MSRT + morphology (three-part cueing under VIS). Depth figures are indicative to anchor the spectrum:

• CAT-2 (Light): Small crater with SC-1, clean rim, no chip flanks, no cracks; mainly a raking-only cue at close/standard view. Indicative depth: ~10-40 μm.
• CAT-3 (Moderate): Pronounced crater with SC-2 (clear); minor chip flanks and/or nearby modeled micro-texture; noticeable at standard view; no cracks. Indicative depth: ~40-120 μm.
• CAT-4 (Severe): Deep crater with rough, bright flanks, peppered satellites; clearly visible at standard & wide-field views; no cracks. Indicative depth: ~120-300 μm+.
• CAT-5 (by integrity/location): Any radial/star cracking, running edge crack, or moving pane → CAT-5 (non-repairable/out of in-place scope). Between-pane presentation by fixed parallax → CAT-5 by location. Document and refer per project protocol.

CAT assignment is appearance/condition-based; acceptance is separate (VIS §6).

• vs. Impact divot (M.04.01): A simple divot lacks radial arms and often has smaller, cleaner rims; pellet strikes trend larger energy, may show satellite pits or incipient cracking-if cracks present → CAT-5.
• vs. Star break/bullseye initiation (M.04.02): If star network is evident, classify under M.04.02 (default CAT-5 by integrity).
• vs. Hot-particle peppering (Th.01.01/Th.01.02): Thermal/ferrous peppering forms distributed fields of fused nodules/pits (often in clusters) rather than a singular impact origin; peppering commonly reads as rough chip-like flanks/fused particles and is mapped under thermal entries.
• vs. Internal cavity artifacts (A-family): Desiccant fines/moisture/haze present between panes and show fixed parallax; do not respond to reveal on #1/#4. Treat as CAT-5 by location.

• Photo set (VIS): 12 / 36 / 72 in, normal + oblique, include raking macros of the crater rim (and any satellites) and at least one context frame showing proximity to edges/hardware; record distance/angle in-frame.
• MSRT result: Record SC-class (SC-0/1/2) with one light, non-marring pass at the rim (not across any cracks). Prefer polymer stylus on suspected coated faces.
• Forms: Pane ID; product family & surface numbering (#1-#4; laminate-internal); worked surface Y/N; functional coating on worked surface? (Y/N/Unknown); reveal status; lighting/time; geometry checklist; photos attached.
• Acceptance split: VIS §6 governs post-restoration appearance; classification ≠ acceptance. Transition edges, residual pits, embedded particulates, and coating anomalies on coated faces remain disqualifying per the applicable acceptance category.

• M.04.03 Pellet/BB Impact - Localized crater on surface #___ with SC-[1/2] at rim; [no radial cracking / radial arm(s) present]. Visible at [12/36/72 in] under VIS geometry after Non-Invasive Reveal. Classification: CAT-[2/3/4] by morphology + MSRT; if cracking present → CAT-5 (integrity). Location/access: surface numbering recorded; parallax checked. Acceptance: per VIS §6; documentation attached (photo set + forms).