Tomabi

Operating and logistics dataset from the largest petroleum stockpile base in Japan — Tomakomai Eastern National Petroleum Stockpiling Base: 6.4 million kL across 57 crude tanks on a 2.74 million m² site in three separately commissioned districts. Includes tank-level inventory and level telemetry (55 tanks of 114,800 kL and 2 of 41,000 kL, double-deck floating-roof design), tanker receipt and discharge campaign records through a single 50,000-300,000 DWT sea berth and loading arms, flow through a 9.4km x 2 pipeline pair (roughly 3km subsea plus 6km land), 24/7 centralised safety and equipment-status monitoring, ISO 45001 occupational-safety records, drill logs, and published procurement notices for maintenance and crude/chemical purchases.

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Coverage

Universe, instruments and categories.

Industry: Oil & Gas Storage & Transportation
Instruments: commoditiesequities
Categories: Alternative

Dataset card

Type: not stated
Format: Mixed: tabular time-series (tank level, throughput, equipment and alarm status from centralised monitoring), structured tabular asset registries (published capacity, tank and equipment tables), and PDF procurement/specification documents
Volume: 57 monitored crude tanks totalling 6.4 million kL with sub-daily level telemetry over a 42-year tenure gives order 10^7-10^8 tank-gauging points; berth campaign and pipeline transfer records in the low tens of thousands since 1984; plus equipment registers and alarm/drill logs across roughly 400 instrumented plant items (57 tanks, 4 crude pumps, 3 boilers, 2 gas-turbine generators, 6 fire appliances, 1,080m x 2 oil booms, one 500m berth and a 9.4km x 2 pipeline pair). Estimate from the published equipment census; no record counts are disclosed.
Users: N/A — state-contracted base operator with no user-facing product. Scale anchor instead: approximately 82 employees (April 2026), capital 100m yen, wholly owned by JERA, with official-gazette filings showing 78.7m yen net profit and 2.87bn yen total assets at 31 March 2026.
History: 42 years
Update frequency: not stated
Growth: Mature and stable, actively operated — the fixed national asset is unchanged since District 3 completed in December 1990, but the site carries live FY2026 tender notices, a May 2026 national science-and-technology commendation and a November 2025 incident report, with news archives maintained annually since FY2018. Note a consolidating ownership trend: JERA has been forming a dedicated storage operator covering the national bases, so the reporting entity may be absorbed.
Launched: 1984 for the data asset (District 1 in service September 1984); the company was established January 1981 to drive construction and re-formed as an operating-services company in February 2004 when national stockpile management was consolidated under the state agency.
Delivery: not stated
Entity mapping: not stated
Sample: not stated
Point-in-time: not stated
Licence: not stated

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