#SC 40RT 06 – 101027Page 16 of 44
7.5. Pickling / Passivation Procedure
In many cases it is convenient to use the Scanjet tank cleaning machines for
surface treatment of tanks. The fluids used for this kind of procedure are mostly
Nitric and Hydrofluoric acid in different proportions. These chemicals are highly
aggressive to most materials including the standard Viton® seals inside the tank
cleaning machine. Scanjet recommends a change of seals to Kalrez® which is a
perfluorelastomer and chemically stable with these acids.
This guide is valid for the following Scanjet machines: SC 30T, SC 30TH, SC 30TL,
SC 40RT
Working procedure:
Before operation:
• Make sure that nothing is blocking
the nozzle movement
• Open the red cofferdam plug (A)
During operation:
• Continuously check the cofferdam
for leakage
• If leakage occurs, stop the operation flush the machine with freshwater and
change seals
After operation:
• Directly flush the machine with freshwater to make sure no residues are left
in the machine
• Drain the drive unit, if fluid comes out open the drive unit and inspect
• Once again check the cofferdam and put back the red plug
Failure to comply to these recommendations could lead to serious damages to
the machine. Do not forget to use safety glasses and protection clothes when
doing the procedure.
It is recommended to follow a protocol and write a report for every machine.
A
Designer
Date
Date
Drawer
Surface treatment
Weight
Note
Dimension
Material
General Tolerances
Tolerance ISO 2768-m
Gen. surface
N9
This document is our property and shall not without our
permission in writing be altered, copied, used for manu-
facturing or communicated to any person or company.
Drawing no. / Ritningsnr.
Format
SC40RT
A4
Scale
SC40RT
1:5
SC40RT
Denna handling är vår egendom och får ej utan vårt
skriftliga medgivande ändras, kopieras, användas för
tillverkning eller delges annan person eller firma.
SS-ISO 2768-m for machined parts
(30)-120=
0.3
0.5-3=
0.1 (120)-315=
0.5
(3)-30=
0.2 315)-1000=
0.8
P03.1
Törnedalsgatan 1, 275 21 Sjöbo
SWEDEN
ML
Revision
05-04-19
E
No.
Revision note
Date
Sign.
Qty.
Ins.
gram
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