No standardized area published
Assembling intelligence…
Reading listings, research log, and source-health evidence.
BunkerStrategyIntelligence terminalBunkerStrategyIntelligence terminalReading listings, research log, and source-health evidence.
The archive documents Nya Varvet as a naval base and shipyard in a rock cavern. Its documented role was western naval-base, shipyard and command functions. Marina Älvsborg Radio shortwave station built on Billingen (1939).
No standardized area published
Start date not established
Completion date not established
No unit-attributed image · 25 in the 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.
The parent programme screen is lower than an included child dossier and cannot be published as an additive point estimate until parent/child scope is reconciled.
Method, scope and confidence →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.
11,000 Solid Design m³SEK 7,500 / Solid Design M3Class Proxy quantity · Assumption rateBasisMinimum protected-scope proxy aligned to the documented Billingen two-storey headquarters/logistics component. Archet… · Audit revisionInternal 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.
Minimum protected-scope proxy aligned to the documented Billingen two-storey headquarters/logistics component. Archetype cavern-envelope factor is 5.5 design m³ per usable m². Mass uses an assumed Swedish hard… · 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.
Rock-support surface does not apply to this audited morphology. · Audited morphologyCounts and dimensions of access, transfer, utility and emergency interfaces.
Archetype portal/escape count. · Reviewed base modelCast inner structures and linings, kept separate from excavated rock and reinforcement mass.
Minimum protected-scope proxy aligned to the documented Billingen two-storey headquarters/logistics component. Archetype concrete factor is 0.7 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. The article spans a naval-base campus and several distinct rock facilities. In 1939 Älvsborg Radio was built at Nya Varvet, a staff rock room was blasted in Billingen's east side around 1942, and the short-wave station received a separate rock room on Hängest…
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.
Point estimate withheld · audited seed retained only for revision history
Central quantities × current installed-rate screen.
Not yet probability-weighted. The current legacy concept contingency remains separate.
22% applied to the direct-work screen.
A scope conflict prevents a defensible point estimate.
Not a replacement estimate for the entire naval base and shipyard.
25/100 article-geometry completeness. Detailed source extraction is available in the original-article audit.
Confidence E · geometry completeness 25/100
Do not add this blindly to related records. Inclusive of se-nya-varvet-billingen-staff-rock only; child must not be added. Hängesten is separate and not an explicit child.
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.
No explicit active base-WBS line.
No explicit active base-WBS line.
Integrated testing, commissioning and public-safe documentation · SEK 3,475,000
| Change | Scope | Audited base | Quantity / rate basis | Provenance |
|---|---|---|---|---|
| Retained | 01Documented rock-facility civil worksCivil Rock | SEK 82,500,000 | 11,000 Solid Design m³ × SEK 7,500 / Solid Design m³Class Proxy quantity · Assumption rateMinimum protected-scope proxy aligned to the documented Billingen two-storey headquarters/logistics component. Archetype cavern-envelope factor is 5.5 design m³ per usable m². | Existing archive WBS |
| Retained | 02Rock mass handlingMass Handling | SEK 2,915,000 | 29,150 T × SEK 100 / TClass Proxy quantity · Derived rateMinimum protected-scope proxy aligned to the documented Billingen two-storey headquarters/logistics component. Archetype cavern-envelope factor is 5.5 design m³ per usable m². Mass uses an assumed Swedish hard-rock density of 2.65 t/m³. | Existing archive WBS |
| Retained | 03Concrete inner worksStructural | SEK 9,800,000 | 1,400 m³ × SEK 7,000 / m³Class Proxy quantity · Assumption rateMinimum protected-scope proxy aligned to the documented Billingen two-storey headquarters/logistics component. Archetype concrete factor is 0.7 m³ per usable m². | Existing archive WBS |
| Retained | 05Headquarters, workshop and storage fit-outBuilding Services | SEK 25,500,000 | 1,700 m² / 18,299 ft² × SEK 15,000 / Usable m²Class Proxy quantity · Assumption rateMinimum protected-scope proxy aligned to the documented Billingen two-storey headquarters/logistics component. Fit-out factor is 0.85 times the reference scale. | Existing archive WBS |
| Retained | 06Protection and resilient systemsProtection | SEK 24,000,000 | 1.33 Project × SEK 18,000,000 / ProjectAssumption quantity · Assumption rateOne protection package per 1500 usable m² / 16,146 ft², subject to a 1-package minimum. | Existing archive WBS |
| Retained | 07Portals and site interfacesSite And Access | SEK 12,000,000 | 2 Project × SEK 6,000,000 / ProjectAssumption quantity · Assumption rateArchetype portal/escape count. | Existing archive WBS |
| Retained | 09Naval command and secure communicationsMission Systems | SEK 20,000,000 | 1.33 Reference Package × SEK 15,000,000 / Reference PackageAssumption quantity · Assumption rateOne mission package per 1500 usable m² / 16,146 ft², subject to a 1-package minimum. | Existing archive WBS |
| Added | R482Integrated testing, commissioning and public-safe documentation | SEK 3,475,000 | 5% of MEP/protection/mission-system scope | Class assumption — commissioning plan required |
Active base WBS SEK 180,190,000 · 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 material establishes specialized systems but no prices. Package values are assumptions and must not be read as classified equivalence.
Western naval-base, shipyard and command functions.
Marina Älvsborg Radio shortwave station built on Billingen.
B009Naval shipyard closed.
B013Naval-base activity ended and the area was sold to two private companies.
B0135 reviewed claims. Evidence locators resolve against the stored article hash or archived snapshot.
| Subject | Claim | Value | Date | Evidence | Certainty |
|---|---|---|---|---|---|
| milestone | Event | Marina Älvsborg Radio shortwave station built on Billingen. | 1939 | B009 | Reported |
| milestone | Event | Naval shipyard closed. | 1966 | B013 | Reported |
| milestone | Event | Naval-base activity ended and the area was sold to two private companies. | 1986-01-28 | B013 | Reported |
| quantitative observation | Early 1950s Maritime District Workforce | 1,000 persons | — | B011 | Reported |
| quantitative observation | Boats At Peak | 40 boats | — | B010 | Reported |
Programme, sale, operating and component figures remain visible but are not silently relabelled as facility construction cost.
| Scope | Stage | Nominal | CPI 2025 | BKI 2025 | Date / evidence |
|---|---|---|---|---|---|
| Sale of the whole Nya Varvet area to Artur Källfelt Byggnads AB and Nimre AB; not cavern construction cost. {"amountBound":null,"nonAdditive":true,"publisherLegacyEquivalentSek":null,"publisherLegacyEquivalentBasis":null} | Sale | SEK 10,300,000 | SEK 26,869,757 | — | 1986-01-28B013 |