Document/Revision No. BP-EN-SDGEN1 1.0 Effective: April 1, 2013
Safe-Drive™ Process Refractometer
PR-23-SD Generation 1
Best Practices
1 About This Document
This document is intended for individuals
installing, commissioning, operating, and/
or servicing the Safe-Drive™ Process
Refractometer PR-23-SD generation 1
model that has been manufactured in
years 2006–2013. The purpose of this
document is to provide a quick guide for
the abovementioned tasks in the form of
K-Patents recommended best practices.
This document in intended for PR-23-SD applications that have a steam wash system
(typical application for black liquor).
NOTE: These instructions are for quick reference only. For more thorough guidance, please
refer to K-Patents user manual and documentation.
2 Before Installation
2.1 Installation Location Checklist
Before the SD sensor system is installed, it is important to inspect the installation location
carefully for the following conditions:
●
Install the SD sensor system onto either vertical or horizontal pipeline. The
recommended ow rate is 0.4 m/s – 2 m/s (1.5 ft/s – 6 ft/s).
●
Mount the system at waist level. This is the natural and safe height for the system and
enables you to use the tools more ergonomically.
●
Leave a 1 m (approximately 3 ft) space around the installation for operating around the
SD sensor system. For the same reason, the steam connections should be installed
on the sides or back of the sensor system.
●
Recommended maximum ambient temperature of installation location is 45°C (120°F).
●
Avoid locations that are blocked by other piping and/or equipment, or require additional
tools, such as a ladder, to access the sensor. The installation location must be level,
rm, and free of clutter to provide safe and easy access to the system.
Sensor insertion / removal instruction cardSupplied by K- Patents
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Product user manualSupplied by K- Patents
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NOTE: The material of the SDI valve body that is welded onto a process pipe is Duplex
steel SAF2205 (EN 1.4462, ASTM S32205/S31803). Choose the welding method and
ller accordingly.
K-Patents recommends complying with the applicable EN / ASTM standards.
3 Safety Requirements
These safety requirements must be followed at all times when installing, operating, or
servicing PR-23-SD sensor. These are the minimum safety requirements – your company
may require additional PPE (personal protective equipment).
For more information on safety issues, please see K-Patents Safety Instructions.
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Document/Revision No. BP-EN-SDGEN1 1.0 Effective: April 1, 2013
Safe-Drive™ Process Refractometer PR-23-SD Best Practices, Generation 1
Figure 3 Safety symbols
WARNING: Watch out for hot steam and process pipes. Wear protective clothing as
instructed below to work safely.
●
Only authorized personnel can perform the tasks instructed in this document.
●
Long-sleeved safety clothing.
●
Safety glasses and/or goggles.
●
Hard hat or helmet.
●
Protective gloves.
●
Locate the nearest emergency shower and eye wash before starting the work.
●
Never operate the Safe-Drive™ Retractor alone.
●
Hard-cap safety boots.
4 Installation Process
For more thorough instructions, please refer to K-Patents user documentation or visit the
K-Patents website to see the instructional video (www.kpatents.com, PR-23-SD SafeDrive™ Operation Guide Video).
Installation of the SD sensor system consists of
●
Cutting pipe opening for SDI isolation valve.
●
Welding and assembling the SDI valve onto the processing piping.
●
Installing the steam prism wash system.
●
Installing the PR-23-SD sensor.
●
Installing the DTR transmitter.
4.1 Spool piece assembly
If the SDI valve was supplied pre-welded and assembled onto a pipe spool piece for
integration in existing piping on site, please skip ahead to installing prism wash.
Figure 4 Vertical and horizontal spool piece assemblies
4.2 Cutting Installation Opening for SDI Valve
Use the installation guide sticker provided by K-Patents to determine the installation opening
shape and size suitable for your process pipe. If you do not have the guide sticker at hand,
please follow the instructions in the images below:
Figure 5 Installation guide sticker
NOTE: For larger pipes, use the same dimensions as for 24” (610 mm) pipes.
To cut the installation opening
1. Cut the installation guide sticker to match the pipe size.
2. Clean the surface of the pipe around the installation area and attach the sticker onto
the pipe.
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Document/Revision No. BP-EN-SDGEN1 1.0 Effective: April 1, 2013
Safe-Drive™ Process Refractometer PR-23-SD Best Practices, Generation 1
NOTE: Make sure that the FLOW marker is parallel to the pipe and points to the correct
ow direction. On a horizontal pipe the nozzle points downwards and on a vertical pipe
it points to right. The SD sensor system must always be installed in horizontal position
and on the side of the pipe.
3. Drill two holes – 50 mm (2”) and 25 mm (1”) – as guided by the sticker.
4. Remove the bridge between the holes so that the opening is exactly the shape of
the sticker.
Process pipe
Cutout
Cutout
Safe Drive
mounting flange
Process pipe
Weld
Weld
Safe Drive
mounting flange
Figure 6 Installation on vertical and horizontal pipes
4.3 Disassembling SDI Valve for Welding
To avoid thermal damage to the isolation valve sealing, you must separate the valve body
from the valve assembly before it is welded onto the pipe.