No standardized area published
Assembling intelligence…
Reading listings, research log, and source-health evidence.
BunkerStrategyIntelligence terminalBunkerStrategyIntelligence terminalReading listings, research log, and source-health evidence.
Protected F 9 Säve fuel facility beside and below the new aircraft rock hangar, reached through a horseshoe shock tunnel and a 2.5 m barrier, with two tanks totaling 1,200 m³ and an uncompleted fixed distribution scheme.
No standardized area published
Start date not established
Completion date not established
Unit-attributed from its source article
Functional recreation of the documented facility in Sweden using current construction methods and 2026 prices, preserving the documented capacity, protection, autonomy and redundancy. Ex VAT; excluding land, financing, remediation, classified mission equipment and data-centre hardware.
Provisional audited central concept screen; expected-risk calibration is pending. It is not yet a risk-adjusted expected cost.
Method, scope and confidence →11 photographs sourced from the original article, with captions where available.
Published, calculated and proxy dimensions are deliberately separated. Missing evidence stays visible instead of becoming zero.
Rock in place removed before bulking; the excavation-pricing quantity.
Internal airspace; not the amount of rock removed.
Blasted material after bulking; the haul and disposal quantity.
These cubic metres are not interchangeable.
Usable, floor or footprint area; the label is preserved because these are not always interchangeable.
No usable quantity in the reviewed source · Evidence gapRock in place removed before bulking; the quantity used to price excavation.
Proxy operational floor-area envelope for the two tank spaces, access and pump/support areas; tank capacity is published. Archetype cavern-envelope factor is 6 design m³ per usable m². · Prior model input reviewed by auditInternal air or chamber volume. It is not solid excavation without overbreak, access and support geometry.
No usable quantity in the reviewed source · Evidence gapBlasted material after bulking, or its handled mass. No swollen cubic metres are inferred when only tonnes are modelled.
Proxy operational floor-area envelope for the two tank spaces, access and pump/support areas; tank capacity is published. Archetype cavern-envelope factor is 6 design m³ per usable m². Mass uses an assumed Swe… · Reviewed mass-handling modelLength alone is insufficient; a costable tunnel also needs width, height or cross-sectional area.
No usable quantity in the reviewed source · Evidence gapPublished chamber or arch geometry used to test volume and support assumptions.
No usable quantity in the reviewed source · Evidence gapRock surface requiring bolts, mesh or shotcrete, preferably measured in square metres.
No support-area quantity is published · Audited excavation scopeCounts and dimensions of access, transfer, utility and emergency interfaces.
One protection package per 2000 usable m² / 21,528 ft², subject to a 1-package minimum. · Reviewed base modelCast inner structures and linings, kept separate from excavated rock and reinforcement mass.
Proxy operational floor-area envelope for the two tank spaces, access and pump/support areas; tank capacity is published. Archetype concrete factor is 0.4 m³ per usable m². · Reviewed base modelGroundwater, inflow, drainage, pumping and moisture-control evidence affecting construction and operation.
No usable quantity in the reviewed source · Evidence gapThe headline answers the current replacement question. Historic cost, CPI and construction-index comparisons remain separate because they answer different questions.
Different specifications receive different estimates; they are not used as the upper and lower limits of one answer.
Preserves documented capacity, protection, autonomy and redundancy using current construction methods.
Requires a modern structural, fire, protection and supplier performance brief.
Requires IT load, cooling topology, grid capacity, redundancy and autonomy. Server hardware is excluded.
No representative facility construction cost selected
General purchasing-power comparison—not a construction quote
Broad BKI proxy—not a bunker-specific rebuild price
Scope lock. Functional recreation of the documented facility in Sweden using current construction methods and 2026 prices, preserving the documented capacity, protection, autonomy and redundancy. Ex VAT; excluding land, financing, remediation, classified mission equipment and data-centre hardware. This is an incremental fuel-storage component beside the F 9 Säve rock hangar. A steep stair enters a horseshoe-shaped shock-wave tunnel. Two sequential shock doors lie on either side of an approximately 2.5 m thick wall, followed by another roughly 60 steps…
Audit revision sweden-replacement-audit-2026.08.15. The central WBS below incorporates the 61-article review. The former deterministic low/base/high cases remain available only as sensitivities and revision history.
Direct works + owner / design / investigation + legacy concept contingency
Central quantities × current installed-rate screen.
Not yet probability-weighted. The current legacy concept contingency remains separate.
22% applied to the direct-work screen.
Raw model SEK 140.5m · rounded for Confidence D.
Transitional limitation. SEK 23,893,000 is still a blanket concept contingency, not probability-weighted expected risk. This is why the amount is labelled provisional. The audited fuel storage rock WBS remains the central scope ledger.
Incremental protected fuel component beside/below the F 9 hangar.
74/100 article-geometry completeness. Detailed source extraction is available in the original-article audit.
Confidence D · geometry completeness 74/100
Do not add this blindly to related records. Child of se-f9-save-new-berghangar; never add to the inclusive parent.
Largest active lines in the audited central component schedule.
The workbook publishes one revised central schedule. Its prior low and high stress cases are retained only under sensitivities; no line-level probability distributions are implied.
Hydrogeology, drainage, pumping and moisture control · SEK 2,880,000
Storage-cavern excavation and support · SEK 36,000,000
Integrated testing, commissioning and public-safe documentation · SEK 2,220,000
| Change | Scope | Audited base | Quantity / rate basis | Provenance |
|---|---|---|---|---|
| Retained | 01Storage-cavern excavation and supportCivil Rock | SEK 36,000,000 | 4,800 Solid Design m³ × SEK 7,500 / Solid Design m³Class Proxy quantity · Assumption rateProxy operational floor-area envelope for the two tank spaces, access and pump/support areas; tank capacity is published. Archetype cavern-envelope factor is 6 design m³ per usable m². | Existing archive WBS |
| Retained | 02Rock mass handlingMass Handling | SEK 1,272,000 | 12,720 T × SEK 100 / TClass Proxy quantity · Derived rateProxy operational floor-area envelope for the two tank spaces, access and pump/support areas; tank capacity is published. Archetype cavern-envelope factor is 6 design m³ per usable m². Mass uses an assumed Swedish hard-rock density of 2.65 t/m³. | Existing archive WBS |
| Retained | 03Concrete floors, barriers and containmentStructural | SEK 2,240,000 | 320 m³ × SEK 7,000 / m³Class Proxy quantity · Assumption rateProxy operational floor-area envelope for the two tank spaces, access and pump/support areas; tank capacity is published. Archetype concrete factor is 0.4 m³ per usable m². | Existing archive WBS |
| Retained | 04Installed reinforcementStructural | SEK 560,000 | 16,000 Kg × SEK 35 / KgClass Proxy quantity · Assumption rateProxy operational floor-area envelope for the two tank spaces, access and pump/support areas; tank capacity is published. Archetype concrete factor is 0.4 m³ per usable m². Archetype reinforcement intensity is 50 kg per concrete m³. | Existing archive WBS |
| Retained | 05Cavern services and fire systemsBuilding Services | SEK 8,400,000 | 560 m² / 6,028 ft² × SEK 15,000 / Usable m²Class Proxy quantity · Assumption rateProxy operational floor-area envelope for the two tank spaces, access and pump/support areas; tank capacity is published. Fit-out factor is 0.7 times the reference scale. | Existing archive WBS |
| Retained | 06Protected access and resilient utilitiesProtection | SEK 18,000,000 | 1 Project × SEK 18,000,000 / ProjectAssumption quantity · Assumption rateOne protection package per 2000 usable m² / 21,528 ft², subject to a 1-package minimum. | Existing archive WBS |
| Retained | 07Portals and transfer interfacesSite And Access | SEK 6,000,000 | 1 Project × SEK 6,000,000 / ProjectPublished quantity · Assumption rateOne horseshoe protected entrance system is described. | Existing archive WBS |
| Retained | 10Fuel storage and transfer processProcess And Support | SEK 18,000,000 | 1,200 Storage m³ × SEK 15,000 / Storage m³Derived From Published quantity · Assumption rateSum of the reported 500 and 700 m³ tanks. | Existing archive WBS |
| Added | R371Hydrogeology, drainage, pumping and moisture control | SEK 2,880,000 | 8% of supported-rock scope as a class-screening allowance | Class assumption — site investigation/RFQ required |
| Added | R372Integrated testing, commissioning and public-safe documentation | SEK 2,220,000 | 5% of MEP/protection/mission-system scope | Class assumption — commissioning plan required |
Active base WBS SEK 95,572,000 · owner/design and contingency are added in the scenario cards above · 12 removed rows across the archive remain visible as change history.
The three inputs most likely to move the current screen.
These deterministic stress cases simultaneously vary quantities, rates, scope allowances and contingency. They are not confidence intervals and no longer serve as the headline answer.
Links support a rate, scope boundary or method. Context-only sources are not represented as quotations.
Gryaab February-2024 long-tunnel benchmark: SEK 5,513/design m³ for excavation plus support. Low case is lightly currentized; base/high add small, constrained, non-repetitive bunker uncertainty.
Gryaab February-2024 long-tunnel benchmark: SEK 5,513/design m³ for excavation plus support. Low case is lightly currentized; base/high add small, constrained, non-repetitive bunker uncertainty.
Skanska's Ostlanken order value is SEK 240m for handling 2.0m tonnes of rock and 0.4m tonnes of soil, excluding options. The base is the observed blended benchmark; bounds are assumptions.
Public ready-mix material check only; installed underground rates require RFQ.
Public retail material check only; cutting, bending, fixing, waste and underground logistics require RFQ.
Public sources establish specialized tested products but not project prices.
Store and distribute aviation fuel for F 9 and its protected hangar.
Fuel installation rebuilt with closed, site-fabricated metal tanks after leakage from the original lined rock spaces.
B012Adjacent fuel depot ceased use.
B012Facility constructed as an integrated component of the new F 9 rock hangar; article gives no independent build date.
B006Fixed internal aircraft-fuelling approach abandoned because ventilation was inadequate and explosion risk was unacceptable.
B007Prepared pipe fuelling at southern pad 3 and airfield pump station was never completed.
B008Tanks/lines empty and guided public tours planned through Aeroseum.
B005,B009Protected storage and fuel supply, with fixed internal fuelling abandoned and roll-tank distribution used.
B006,B007,B008Emptied and presented through guided tours.
B005,B00920 reviewed claims. Evidence locators resolve against the stored article hash or archived snapshot.
| Subject | Claim | Value | Date | Evidence | Certainty |
|---|---|---|---|---|---|
| milestone | Event | Fuel installation rebuilt with closed, site-fabricated metal tanks after leakage from the original lined rock spaces. | 1960s | B012 | Reported |
| milestone | Event | Adjacent fuel depot ceased use. | circa 1996 | B012 | Reported |
| technical system | Fuel | Protected depot beside/below the hangar; hazardous internal refuelling pipework was removed and sealed, with tanks later served from a surface station. | — | B012 | Reported |
| milestone | Event | Facility constructed as an integrated component of the new F 9 rock hangar; article gives no independent build date. | unknown | B006 | Reported |
| milestone | Event | Fixed internal aircraft-fuelling approach abandoned because ventilation was inadequate and explosion risk was unacceptable. | active era | B007 | Reported |
| milestone | Event | Prepared pipe fuelling at southern pad 3 and airfield pump station was never completed. | active era | B008 | Reported |
| milestone | Event | Tanks/lines empty and guided public tours planned through Aeroseum. | article era | B005,B009 | Reported |
| lifecycle summary | Event | Protected storage and fuel supply, with fixed internal fuelling abandoned and roll-tank distribution used. | military era | B006,B007,B008 | Reported |
| lifecycle summary | Event | Emptied and presented through guided tours. | museum era | B005,B009 | Reported |
| quantitative observation | Barrier Wall Thickness | 2.5 m | — | B004 | Reported |
| quantitative observation | Lower Stair Steps | 60 steps | — | B004 | Reported |
| quantitative observation | Small Tank Capacity | 500 m³ | — | B006 | Reported |
| quantitative observation | Large Tank Capacity | 700 m³ | — | B006 | Reported |
| quantitative observation | Total Tank Capacity | 1,200 m³ | — | B006 | Inferred |
| quantitative observation | Roll Tank Capacity | 2.5 m³ each | — | B007 | Reported |
| technical system | Storage | Two large tanks in separated rock spaces behind additional shock protection. | — | B004,B006 | Reported |
| technical system | Mobile Distribution | 2.5 m³ roll tanks and a two-stroke mobile pump/filter unit replaced unsafe internal fixed fuelling. | — | B007 | Reported |
| technical system | Uncompleted Fixed Distribution | Prepared ground pipes and pump station did not become a completed operating scheme. | — | B008 | Reported |
| protection | Shock Tunnel And Doors | Horseshoe entrance with two shock doors straddling an approximately 2.5 m wall, plus further door protection at a tank. | — | B004,B006 | Reported |
| protection | Depth And Separation | Steep stairs and about 60 further steps led to tanks beside and below the parent hangar. | — | B004,B006 | Reported |