Evaluation of the stress distribution on the pressure vessel head according to patterns of the opening distance
Description
The distance between openings introduced by non-radial nozzles on the surface of the hemi-spherical head governs the stress pattern around openings and head itself. The ASME design code defines the minimum openings distances for the design of a pressure vessel when it meets the requirements of the article NB-3222.4(d). This report discusses and analyzes the feasibility of the minimum opening distance defined by ASME code and design cases beyond ASME requirement. The pressurizer of Korea Standardized Nuclear Power Plant (Ulchin 3 and 4) was used as the basic model for this. Stress changes according to the distance between openings were investigated and the factors which should be considered for the opening design were analyzed. (author). 6 refs., 28 figs
Availability note (English)
Available from INIS in electronic form and/or on microfiche .Files
29025628.pdf
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Additional details
Publishing Information
- Imprint Pagination
- 50 p.
- Report number
- KAERI/TR--948/98
INIS
- Country of Publication
- Korea, Republic of
- Country of Input or Organization
- Korea, Republic of
- INIS RN
- 29025628
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; S36: MATERIALS SCIENCE;
- Descriptors DEI
- DISTANCE; NOZZLES; OPENINGS; PRESSURE VESSELS; PWR TYPE REACTORS; STANDARDS; STRESS ANALYSIS
- Descriptors DEC
- CONTAINERS; ENRICHED URANIUM REACTORS; POWER REACTORS; REACTORS; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS