NASA and Roscosmos initiated emergency safety procedures on June 5, 2026, after detecting an increased rate of air loss within a Russian orbital segment of the International Space Station (ISS).

在偵測到國際太空站 (ISS) 俄羅斯軌道分段的空氣流失率增加後，NASA 與 Roscosmos 於 2026 年 6 月 5 日啟動了緊急安全程序。

The incident centered on the PrK transfer tunnel of the Zvezda service module, a component characterized by NASA as having a history of structural fractures and intermittent pressure losses over a six-year period. According to reports from a senior NASA official, the atmospheric leak rate escalated from approximately 0.5 kilograms to nearly 1 kilogram per day during the current week. This degradation prompted Roscosmos to commence an extensive repair operation. A point of operational divergence occurred when Russian cosmonauts proposed the use of a saw to access the fracture site—a methodology NASA officials reportedly contested, subsequently leading to the issuance of a 'safe-haven' order.

此次事件集中在 Zvezda 服務模組的 PrK 轉接通道，NASA 將該部件描述為在六年期間內有結構裂縫和間歇性壓力流失的紀錄。根據一名 NASA 高級官員的報告，本週大氣洩漏率從每日約 0.5 公斤增加到近 1 公斤。此種惡化促使 Roscosmos 開始進行大規模維修。在操作上出現了分歧，俄羅斯太空人建議使用鋸條來接觸裂縫部位——據報導 NASA 官員對此方法表示異議，隨後導致發布了「避難」指令。

Under this protocol, five crew members—comprising the SpaceX Crew-12 mission and astronaut Chris Williams—were instructed to don extravehicular activity suits and relocate to the docked SpaceX Dragon spacecraft. This maneuver ensured the immediate availability of an evacuation vehicle should the structural integrity of the station have been further compromised. Concurrently, Roscosmos identified two leak sites, successfully sealing one with a specialized compound while continuing the assessment of the second. Following a decision by Roscosmos to suspend repair activities to facilitate further data analysis, NASA rescinded the safety order approximately two hours after its inception, permitting the crew to resume standard operations.

根據此協定，五名機組員（包括 SpaceX Crew-12 任務人員與太空人 Chris Williams）被指示穿上出艙活動太空衣並遷移至對接的 SpaceX Dragon 太空船。此舉確保了在太空站結構完整性進一步受損時，能立即擁有撤離載具。與此同時，Roscosmos 確定了兩個洩漏點，成功使用特製化合物封住其中一個，並繼續評估第二個。在 Roscosmos 決定暫停維修活動以利於進一步數據分析後，NASA 在安全指令發布約兩小時後將其撤銷，允許機組員恢復標準操作。

This event underscores the systemic challenges associated with the maintenance of an aging orbital asset. While the ISS has maintained a continuous human presence since 2000, the persistence of these structural anomalies has accelerated NASA's strategic transition toward commercially operated low Earth orbit destinations. Current legislative efforts in the United States Congress seek to extend the station's operational lifespan until 2032 to facilitate this institutional transition.

此次事件凸顯了維護老化軌道資產所面臨的系統性挑戰。雖然 ISS 自 2000 年以來一直維持有人駐守，但這些結構異常的持續存在，加速了 NASA 向商業營運近地軌道目的地的戰略轉型。美國國會目前的立法努力旨在將太空站的運作壽命延長至 2032 年，以利於此體制轉型。

The ISS crew has returned to normal operations, and the station's internal pressure remains stable while NASA and Roscosmos continue their collaborative analysis of the Zvezda module's structural failures.

ISS 機組員已恢復正常操作，在 NASA 與 Roscosmos 繼續合作分析 Zvezda 模組結構失效的同時，太空站內部壓力保持穩定。