PR1 ges1 - PVtools
Transcript of PR1 ges1 - PVtools
UHDE-STANDARD UN
5222-02 Part 3 (M)
Complementary material
HOLD DOWN GRID Page 1 of 2
[Modified On: 29/08/2008]
© 2008 UHDE INDIA Technical Discipline: MQ
1 Standard requirements for design/ construction In the case of upwards stream flow, the force by weight of the grid in corroded condition must exceed by at least 50 % of the pressure loss of the packing less force by weight of the packing. If the weight force of the hold-down grid is too low, increase thickness of the flat steel members or provide fixing arrangement for the hold-down grid.
1.1 Materials Wire mesh packing: Corrosion-resistant steel (e.g. SS 304) Support grid and connecting elements: see technical specification of vessel
Figure 1.
UHDE-STANDARD September 2004
UN 5222-02
Part 3
Complementary material
HOLD DOWN GRID Page 2 of 2
Free cross section of wire mesh packing (acc. to DIN ISO 4783-1):
• for 0.5 mm wire diameter = 69 %
• for 0.63 mm wire diameter = 64 %
Reference Standards
DIN ISO 4783-1 : 1996-10 Industrial wire screens and woven cloth; Guide to the choice of aperture
size and wire diameter combinations; Generalities
UF V360-21 Part 1 E 01-12
A B C D E F G H I K L UAN : Z-Nr.:
TON :
Designation
Seam-No. Number °C min.
Date Manufacturer
°C max.
Order-No.
Year of construction Work-No.
°C
Vessel sketch with seam-No.
°C
mm mm mm
°C
°C
mm mm mm
°C
°C
mm mm mm
°C
°C
mm mm mm
°C
°C
mm mm mm
°C
°C
mm mm mm
°C
°C Drawing-No. Sheet 1 Rev.
mm mm mm from 2
preheat-inter-
pass temp.
Welding process
Sketch of joint,
seam and preparation
with dimensions
Part-No.
to
part-No.
Material
to
material
Joint
efficiency
Filler metals / make and brand
DIN- or ASME designation
Wire diameter
seal run
Wire diameter
filler passes
Procedure
qualification test
Yet to be done
Examin. of welding
Groove faces
Liq
uid
penetr
. exam
.
Magnetic p
art
ic. exam
.
Ultra
sonic
exam
.
Vis
ual exam
.
Back Exam. root pass before
welding reverse sidechipping
WELDING PROCEDURE AND TESTING SCHEDULE
We reserve all rights relating to this technical documents
Yes No
Liq
uid
penetr
. exam
.
Magnetic p
art
ic. exam
.
Radio
gra
phic
exam
.
Vis
ual exam
.
Procedure
Wire diameter
root pass
A
Seam-No.
UF V360-21 Part 1 E 01-12
M N O P Q R S T
Ultrasonic examination
Method of annealing Dates of annealing Temp. control Longitudinal Transverse
Rate of heating °C / h Work piece Fluid Pressure
Holding temperature °C bar
Holding time Min. Furnace Pressure Holding time
Rate of cooling °C / h bar Min.
°C / h AD-Merkblatt
°C ASME Code
Min.
°C / h
°C / h Special remarks :
°C
Min.
°C / h
°C / h
°C
Min. Symbols in the testing schedule
°C / h Inspector
°C / h
°C
Min.
°C / h
°C / h
°C
Min.
°C
°C / h
°C
Min.
°C
°C / h
°C
Min. Drawing-No. Sheet 2 Rev.
°C from 2
Furn
ace
Induction h
eating
Resis
tance h
eating
Insid
e
Insid
e
Ou
tsid
e
Radiographic -
examination
Ou
tsid
e
Ou
tsid
e
Ou
tsid
e
Rad
iog
rap
hic
exam
inati
on
Remarks
special tests
Leakage
test
Pressure
test
Insid
e
Insid
e
Liquid penetrant
examination
Magnetic
particle
examination
Heat treatment (PWHT)
Each test to be confirmed by the inspector by placing his
initials and data next to the test symbol
Inspections standard
Test scope
100%
25%
Ult
raso
nic
exam
inati
on
Insp
ecti
on
co
mp
.
Man
ufa
ctu
rer
UH
DE
Liq
uid
pen
etr
an
t exam
inati
on
Random incl. cross section
After PWHT
After pressure test
Mag
neti
c p
art
icle
exam
inati
on
We reserve all rights relating to this technical documents
WELDING PROCEDURE AND TESTING SCHEDULE