Enraf Tanksystem HERMetic UTImeter Rtex, Operation And Service Manual

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50455/RTEX/0807 UTImeter Rtex
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4. Recommendation for safe use
1. This Operation and Service Manual is a guide in order to help the user to operate the instrument to our
best knowledge.
2. Nevertheless the maker disclaims all responsibility and liability for damage resulting from the use of the
equipment regardless of the cause of the damage.
3.
Attention is drawn to the possible hazard due to electrostatic charges which may be present in the
tank.
This may happen in particular with static accumulator liquids, i.e. liquids which have low conductivity
of 50 picoSiemens/metre (pS/m) or less.
4.
It is very important that the instrument is grounded to the tank before the probe is introduced into
the tank and remains grounded until after complete withdrawal from the tank.
4.1. If the instrument is installed with the quick connect coupler, grounding is effected through the quick
connect coupler and the mating nipple of the valve provided that these parts are kept clean and free
from corrosion in order to guarantee electrical conductivity. If a grease is used for this purpose, it
must be one which contains graphite.
4.2. If the instrument is not connected to the mating deck valve, the instrument has to be also earthed by
means of the grounding cable and clamp.
5.
It is anticipated that the user will have specific operating methods laid down to ensure safety
when using this type of apparatus. In this case the user's instructions shall be strictly observed.
6.
In the absence of such instructions the following should be noted:
6.1. If a metal sounding pipe is fitted beneath the deck valve or tank is inerted, then ullaging, etc. is
permissible at any time with no restriction.
6.2. If there is no sounding tube or tank is not inerted, the following precautions shall be taken:
6.2.1. If the cargo is not a static accumulator liquid, i.e. its conductivity is more than 50 pS/m, then
ullaging is permitted provided that the instrument is properly grounded and earthed before
the probe is inserted into the tank and remains earthed until the probe has been removed
from the tank.
6.2.2. If the cargo is a static accumulator liquid, i.e. its conductivity is less than 50 pS/m, then
ullaging is permitted provided that:
6.2.2.1. The instrument is properly grounded and earthed before the probe is inserted into
the tank and remains earthed until the probe has been removed from the tank.
6.2.2.2. The apparatus is not introduced into a tank until at least 30 minutes have elapsed
after completion of any loading operation or stopping the injection of inert gas.
6.3. For further guidance refer to International Safety Guide for Oil Tankers and Terminals (ISGOTT),
ISBN 1 85609 081 7, Fith Edition 2006, or consult the appropriate Legislative Authority for the
installation.
7. Warning: change of battery must be carried out in safe area only (non flammable atmosphere).