ASE B2 Unit 1 — Question Coverage Audit (2026-06-10)

RESOLVED 2026-06-10. Buckets A1–A7 authored into Lessons 1.1, 1.3, 1.4, 1.5, 1.6 (Grade D air, waterborne/VOC/hazardous-waste, hazard symbols, spill response + fire classes, ingestion) and seeded live. Quiz mapping tightened: Unit 1's Quick Check now serves only the 137 safety/environmental F questions and excludes the 24 off-topic ones (booth equipment → Unit 6; trim/decals/pinstripe/ airbag → future units) via ACADEMY_UNIT_EXCLUDE in simulator.html. 9 new image prompts added to the Question Image Helper. Original findings kept below for reference.

Checked all 161 ASE B2 category-F questions (the pool Unit 1's Quick Check pulls from) against the actual Unit 1 lesson text. Goal: every fact a student needs to answer a question must be taught in the Academy.

Headline

• ~79 of 161 covered, ~82 have a gap (a fact the question tests that Unit 1 never teaches).
• The core safety teaching is strong — PPE, respirators, the four hazard families, SDS, OSHA/EPA roles all scored well (the pure-safety batch scored 22/27).
• The gaps are not random — they fall into a few clean buckets, and a big share are topics that aren't really "shop safety" at all.

Why so many gaps: category F = "Safety Precautions AND Miscellaneous"

Unit 1 was built as "Shop Safety & Survival" and teaches the safety half thoroughly. But the ASE B2-F category also bundles a miscellaneous half (trim/molding reinstall, decals & graphics, pinstriping, masking, airbag-cover handling) and spray-booth equipment and environmental/VOC regulation — and the Quick Check currently pulls from the WHOLE F pool. So a student on a safety page can draw a "how to apply a pinstripe" question they had no way to learn from a safety lesson.

The gap buckets

A. Should be ADDED to Unit 1 (legitimate safety/environmental depth) — high value

1. Supplied-air system specifics → Lesson 1.5 (~13 q): the "Grade D" breathing-air standard and its numbers (O2 19.5–23.5%, CO <10 ppm, oil <5 mg/m³, CO2 <1000 ppm), the in-booth audible alarm, loose-fitting hoods need no fit test (and allow facial hair), pump intake/regulator/gauge function, 200–300 hr filter interval. Q23,24,25,26,29,149,150,152,155,156,157,158,161.
2. Waterborne is still hazardous + waste handling → Lesson 1.1/1.4 (~13 q): waterborne still has toxic co-solvents (a dust mask isn't enough; can't go down a drain; still hazardous waste), gun-washer flocculation (powder coagulates solids → controlled waste, not the dumpster), never mix solvent + waterborne waste (explosive hydrogen gas). Q46–54,56,57,58,48.
3. VOC regulation details → Lesson 1.1 (~15 q): the Clean Air Act by name, VOC units (lb/gal, g/L), "as packaged" vs "as applied", high-solids clears, transfer efficiency (HVLP 65% rule, 20–40% conventional), smog/ground-level-ozone chemistry, stratospheric vs ground ozone. Q1,44,45,119–135, 143,144,146,147.
4. Hazard-symbol vocabulary → Lesson 1.3 (2 q): "Reactive" and "Corrosive" hazard classes/symbols. Q83,87.
5. Spill response & Right-to-Know → Lesson 1.4 (~4 q): alert/evacuate coworkers on a spill, report an unlabeled drum to a supervisor, contaminated absorbent becomes hazardous waste, you can't be fired for requesting safety info. Q84,93,95,96.
6. Ingestion route → Lesson 1.6 (~3 q): no eating/drinking/smoking in the booth/mixing area, wash hands first, never reuse a beverage/food container for chemicals. Q34,110 (Q105 borderline).
7. Fire extinguisher classes & suppression → Lesson 1.4/1.7 (~5 q): A/B/C/D classes (C electrical, B liquids), mandatory booth suppression, don't tape sprinkler heads, mixing-room curbed floors. Q41,42,64,68,71,74.

B. Belongs in OTHER units, not Unit 1 (don't cram into safety)

8. Spray-booth equipment & design → Unit 6 "Spray Equipment & The Air System" (~12 q): crossdraft/ downdraft, intake/exhaust/arrester filters, interlocks, forced-air/infrared curing, water-bath booths, explosion-proof fixtures. Q9,21,60,61,62,63,66,67,70,72,73,78.
9. "Miscellaneous" trim work — NOT safety (~8 q): body-side moldings, vinyl decals/graphics, pinstriping, masking slip-solution, airbag-cover refinishing. Q5,8,12,14,16,19,20,22. These need a home (a future "B2-F Miscellaneous" lesson or the relevant repair-order units).

Recommended fix

• Author buckets A1–A7 into the matching Unit 1 lessons (closes ~50+ gaps; all legitimate safety/ environmental content for the F exam). Rebuild + re-seed.
• Buckets B8–B9: leave for the units that actually teach them (booth → Unit 6) AND tighten the quiz mapping so Unit 1 safety pages don't pull booth/trim questions a safety lesson can't teach. Options: sub-tag the F pool (safety vs misc vs booth vs VOC), or point each repair-order unit's Quick Check at the right sub-slice instead of all of F.

Method (repeatable for every future unit — see memory academy-must-cover-question-facts)

Pulled questions from functions/scripts/_vault_backups/bundled_questions_b2/B2_F_*.json, lesson prose from u1_enhanced.json, fanned out 6 reviewers (~27 q each) comparing each question's tested fact against the full lesson text, flagged only the gaps.