BWR Type 1 (BWR-1, BWR/1): In 1955 GE developed their original VBWR design into the 197 MW Dresden 1 (6×6, 7×7) reactor, embodying the first iteration of GE's BWR/1 design. Dresden 1 used forced circulation (via external recirculation pumps) and a unique dual cycle (direct+indirect) heat transfer design that proved to be uneconomical.

Boiling-water reactors (BWRs) employ such pressure suppression containment designs. Mark I and Mark II are specific containment configurations for BWRs that use water suppression pools to remove energy from the reactor following a LOCA or other plant transients or accidents.

BWR Mk I containment consists of a light-bulb shape drywell, a torus (wetwell) containing water required for suppression of the fluid pressure and temperature discharged during the postulated design basis accident

2024年1月1日 · The BWR designs have been broken down into six classifications of the primary system and three classifications of containment, BWR/1 through BWR/6 and Mark I through Mark III, respectively.

This enclosure provides an overview of various plant design features that help protect boiling water reactors (BWRs) with Mark I and Mark II containments from certain severe accident challenges, a brief assessment of these design features for reducing radiological releases resulting from severe accidents, as well as an assessment of external con...

BWR secondary containments. This paper describes the results of a recent ORNL study of the impact of BWR MK I primary containment failure dynamics on sec. ndary containment integrity. The fundamental design characteristics of the Browns Ferry secondary containment are first discussed, followed by a brief description of potential MK I severe accide

沸騰水型軽水炉（BWR）の変遷 沸騰水型軽水炉(BWR)の変遷

ンクリ丁卜製を採用するかは,その国における規格や某準,立地条件,経済性,各柏の技術レベルなどの要因を加味して決められるわけであるが,本稿では我が国で採用されている鋼製MARK-II形相桐谷著削二ついて以下に述べる。 納容器の構造につき詳述する。 許容値以下に収める。 スラス! 行なわれる。 また,桁納谷器内外への所与-iの出入りは所員用. 出入口19を通して行なわれる。

The containment for the two plants consisted of large dry spherical steel containments, comparable to that of the earlier PWR steel containments. Humboldt Bay was the first U.S. BWR plant with a pressure suppression feature and has been termed as Pre-Mk I containment.

The Mark I containment program began in 1975 when NRC sent letters to Mark I owners requiring Reevaluation of Containment Response to Hydrodynamic Loads. The BWR Owners Group embarked on a program to resolve the issues. The issues were highly scrutinized and reviewed for plant-specific applicability on operations and structural capability.