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保温层下腐蚀（CUI）是什么？
Corrosion under insulation: the drawing sheet, as a film
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
A
A
B
B
C
C
D
D
E
E
F
F
A
A
CLADDING
INSULATION
STEEL
BORE
4
METAL TEMPERATURE: SEE GRAPH 1
1
3
2
5
LONGITUDINAL SECTION
12 O'CLOCK
6 O'CLOCK
B
2
3
6
SECTION A–A
t NOM.
t REM.
STEEL WALL
5
WALL LOSS, HIDDEN
2
WATER AGAINST STEEL
3
INSULATION, WET
CLADDING
DETAIL B
SCALE 4 : 1
GRAPH 1
CUI RISK RANGES BY METAL TEMPERATURE
HSE 2011 · CAO ET AL. 2022
HSE 2011
MOST CRITICAL
CAO 2022*
RISKIEST
WHERE THE
SOURCES STAND
LOWER,
NOT ZERO
SOURCES
DIFFER
BOTH FLAG IT
PEAK RISK
SOURCES
DIFFER
LOWER
WHILE HOT
0
50
100
150
200
METAL TEMPERATURE, °C
* CAO ET AL. 2022, CITING NACE SP0198 AND API RP 583. RANGES ARE FROM THE TWO DOCUMENTS NAMED,
NOT THE TEXT OF A PAID STANDARD; ENGINEERING DECISIONS NEED THE CURRENT EDITION OF API RP 583.
REVISIONS
REV
DESCRIPTION
DATE
BY
0
FIRST ISSUE, FROM THE LIBRARY PAGE OF 2026-10-25
2026-10-26
BL
NOTES
WINDA
BEACON · LIBRARY
TITLE
CORROSION UNDER INSULATION
(CUI)
INSULATED HORIZONTAL PIPE: SECTIONS, DETAIL, RISK RANGES
READ
beacon.winda.ai/library/corrosion-under-insulation
CREDIT
MADE WITH AI TOOLS. CHECKED BY JUN ZHONG AS EDITOR.
DRAWN
BEACON LIBRARY
CHECKED
J. ZHONG, EDITOR
DATE
2026-10-26
DWG NO.
WB-LIB-CUI-001
REV
0
SCALE
NTS
SHEET
1 OF 1
PROJECTION
WATER, HELD AGAINST THE STEEL
STEP
1
ZONE
B2
0:00 / 1:50
工程图纸
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