Matthews Household · Irthington · Offline · file:// OK

MERGE-NOTES — Perplexity Deep Research → official corpus

Merged: 27 Sep 2026 (Europe/London)
Sources compared: Official chapters 01–15 + main guide vs Perplexity perplexity/01–05.
Rule: Prefer official UK primary sources (Prepare, GOV.UK, EA, FSA, NHS, ENWL, UU, Cumberland, Met Office, HSE) when they disagree. Keep Perplexity raw reports untouched.

Net-new facts worth keeping (with Perplexity chapter)

EA warning lead times: Flood Alerts usually 2–12 hours before flooding; Flood Warnings often 30 minutes–2 hours. Act on the message, do not wait for water at the door. (P02)
Flood Alert as its own tier (flooding possible — prepare now), distinct from Flood Warning / Severe Flood Warning. Official Ch.02 listed Warning + Severe more clearly than Alert. (P02)
Cumberland property-flood report: LFRM@cumberland.gov.uk / council property-flooding form (not an emergency channel). (P02)
Highway flooding / blocked drains (Cumberland): 0300 373 3736. (P02)
UU Priority Services delivery trigger: company may try alternative water for registered customers if supply likely off >12 hours. (P03 / aligns with Ch.04 spirit)
Starlink Mini USB-PD: needs 100 W / 20 V / 5 A; Starlink says USB-PD below 65 W will not work; prefer C1000 100 W USB-C (or Mini’s own PSU on AC), not the C1000’s 30 W USB-C. (P03)
C1000 usable AC energy: Anker ~0.85 inverter factor → ~898 Wh usable from 1,056 Wh (planning). DC/USB nearer ~90% / ~950 Wh. (P03)
Duty-cycle runtime table (Mini + ~30 Wh/day phones on ~898 Wh usable): continuous ≈0.9–1.4 days; 8 h/day ≈2.6–3.9 days; 4 h/day ≈4.7–6.9 days. (P03)
Model check: original C1000 A1761 = 1,056 Wh; newer C1000 Gen 2 ≈ 1,024 Wh — confirm label. (P03)
Household water maths (5 adults + small dog planning): drinking-only floor ≈ 111 L / 7 d or 221 L / 14 d; practical potable ≈ 181 L / 7 d or 361 L / 14 d; comfortable (10 L/adult) ≈ 356 / 711 L. Dog planning example ~0.75 L/day for ~10 kg dry-fed dog — confirm with vet for your dog. (P05; official Ch.08 had comfortable band only)
Food energy planning aid: ~2,250 kcal/adult/day midpoint + 10% contingency → ~86,625 kcal / 7 d or 173,250 / 14 d for five adults (not an official ration). Keep ≥3 days (~33,750 kcal) truly no-cook. (P05)
UK petrol at home: up to 30 L without notifying Petroleum Enforcement Authority, suitable containers, not in living accommodation; generator outdoors, exhaust clear of openings (≥6 m practical spacing). Never back-feed via a wall socket. (P05 / HSE-aligned)
OTC module denser safeguards: avoid multi-symptom cold/flu sachets as default (hidden paracetamol); label box HUMANS ONLY — NEVER GIVE TO DOGS; pharmacist review of contraindications. (P04)
Charcoal BBQ: can keep producing CO for hours after flames look out — keep outdoors while cooling. (P04)
Offline document bag > Faraday pouch: waterproof paper plan + encrypted USB + NCSC-style 3-2-1 copies; Faraday optional defence-in-depth only. (P04; reinforces Ch.12)
Flood recovery ops: pump only when outside water level is lower than inside; do not high-pressure wash contaminated mud (aerosolises sewage); structural advice if water ≥ ~1 m deep (GOV.UK theme). (P05)
Car fuel: keep tank ≥ about half full ahead of winter storm forecasts (stations may not pump in a cut). (P05; official Ch.14 said ~¼ — adopt half as useful upgrade)
One grab bag per adult + shared modules + dog carrier/module (liftable bags). (P05)
FSA power-cut food times (confirmed): fridge ~4 h; full freezer ~48 h; half-full ~24 h (estimates; doors shut). (P01/P05 — see conflicts)

Conflicts — resolved in favour of official UK primary sources

Topic	Perplexity	Official / primary	Resolution
Starlink Mini average draw	Often 25–40 W	Ch.13 / Anker citing Starlink 20–40 W	Keep 20–40 W; use Perplexity duty-cycle maths with that band
Freezer after power cut	Full 48 h / half 24 h (FSA)	Ch.03 also cites GOV.UK after-flood discard if freezer off >24 h; guide previously said ~24 h / ~12 h	Power cut: FSA 48 h / 24 h. Flood aftercare: keep GOV.UK conservative >24 h discard framing. Fix guide’s half-full 12 h error → 24 h
Local council winter pages	Mentions Westmorland & Furness	Irthington = Cumberland (Ch.05)	Ignore W&F as authority for this property
Sandbags	Council does not distribute	Same in Ch.02 + guide	Agree — keep
Water litres	Same 2.5–3 / ~10 L bands	Ch.01/08	Agree — keep official wording; add P05 household totals as planning aid
ENWL 0800 195 4141	Framed as main cut line	Ch.03: 105 primary; 0800 for Extra Care / general	Prefer 105 for cuts
Flood Re BBB £10k	Same	Ch.15	Agree — keep
Generator spacing	≥6 m	Ch.11 cites ~7 m / 20 ft OSHA-style best practice	Keep “generous outdoor spacing / follow manual”; 6 m is compatible

Suspicious / weak / IGNORE (do not fold into guide as household fact)

Honda EU22i petrol maths, 4.2 kW LPG cabinet heater g/h, and log-stove kg/day examples — worked illustrations only; household does not automatically own these. Do not FILL inventory from them.
Exact camping-stove gram-per-boil figures from unnamed “stove maker” planning cards — useful only as outdoor-cook order-of-magnitude; never indoors.
Treating Faraday pouches as EMP “protection” beyond optional RF attenuation — Perplexity itself is cautious; do not escalate beyond Ch.12 realism.
Any implication of a universal MHRA-approved emergency medicine list — Perplexity correctly says none exists; keep NHS/pharmacist framing.
Invented personal FILL values (postcode minutiae beyond CA6, meter locations, policy numbers, dog exact kg) — planning assumptions only.
Panic-buy implications from the full 14-day shopping brief — stage stocks gradually per Prepare.

Digest & guide actions

Digest: 16-perplexity-deep-research-digest.md (ESSENTIAL vs USEFUL, de-duplicated).
Raw Perplexity folder retained: perplexity/.
Main guide: Info bank pointer + critical numbers/checklists folded into existing §§; freezer times corrected to FSA; FILLs untouched.

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