Kapat KARAT-520, Operation Manual

Page: 37 / 52

Figure 2.8 – Requirements to welding during straight pipes installation
Concentric reducer
GОSТ 16037-80-С2
2.3.4.4. Straight pipes mounting
Straight pipes should be mounted on pipeline as follows:
For SAE 1:
n
Welding of (if necessary) confusor and diffusor to straight pipes in
accordance with requirements mentioned on figure 2.8;
n
Assembling of straight pipes, welded confusor and diffusor and
mounting insert;
n
Inserting of the present assembly in pipeline and its welding to sys-
tem pipeline in accordance with requirements of figure 2.8;
n
MI dismantling and flowmeter installation on its place.
For SAE 2:
Mounting in pipeline without straight pipes insert:
n
Measuring the actual external diameter of system pipeline and
flanges boring (if necessary), included in SAE 2, providing diameter
clearance less than 0.1 mm;
n
Flanges welding to system pipeline in accordance with require-
ments to flange installation accuracy, given on figure 2.6;
n
Flowmeter installation after welding and mounting works completion.
Mounting in pipeline with straight pipes insert:
n
Straight section preparation in accordance with figure 2.6 and table 2.1;
n
Welding of confusor and diffusor to straight pipes in accordance with
requirements given on figure 2.8;
n
Assembling of straight pipes, welded confusor and diffusor and
mounting insert;
n
Inserting of the present assembly in pipeline and its welding to sys-
tem pipeline in accordance with requirements of figure 2.8;
n
MI dismantling and flowmeter installation on its place.
СМАФ.407251.002 РЭ . August 2012 Edition 3.0 КАRАТ-520 Ultrasonic flowmeters
37
1.
Description
and operation 2.
Intended use 3.
Maintenance 4.
Verification 5.
Repair 6.
Transportation
and warehousing 7.
Utilization