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General technical approval/
General design certification
No. Z-40.21-432
Harmful to Water [Technische Regel wassergefährdender Stoffe - TRwS] 791-1-1
observed. Taking into account the requirements listed there for the respective system, the
containers may be connected to container systems with up to 5 containers of the same size and
type in a maximum of one row. The personnel loads described in TRwS 791-1
under letter S of Table 2 may only act on a supporting structure and not directly on the container.
(2) The containers must be fixed in their position relative to each other by means of spacers
(spacer tubes/distance strips).
3.2.4
Documentation and certificate of conformity
The company performing the work must provide confirmation, in the form of a certificate of
conformity, that the containers have been correctly positioned, installed and assembled as
described in the manufacturer's assembly instructions and in accordance with the provisions of
this decision, taking account of the provisions issued by the building authorities for items of
equipment. This confirmation is to be provided to the operator in each individual case and included
in the construction file.
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Provisions for use, upkeep, maintenance and inspection
4.1
Use
4.1.1
Stored liquids
(1) The containers may be used to store water-polluting liquids, as described in Section 1(3) and
subject to the restrictions described therein.
(2) It is not permitted to store contaminated media if the contamination in question changes the
behaviour of the substance.
4.1.2
Usable container volume
The permissible fill level of containers must be determined in such a way that the containers cannot
overflow. Excess pressures that may jeopardise the tightness or stability of the containers must
not arise. The permissible fill level of the containers is to be determined in accordance with
Annex 5. The overfill protection is to be configured accordingly.
4.1.3
Documents
The container manufacturer must provide the unit operator with the following documents:
-
Copy of this decision,
-
Copy of the regulations governing the items of equipment delivered,
-
Installation instructions for the installation of the containers or container systems,
-
Copy of the general technical approval/general design certification no.: Z-40.7-487 for the
"Füllstar" filling system (only for container systems).
4.1.4
Operation
(1) Prior to commissioning of the containers/container system, the operator must affix, in a suitable
place, a sign that is to be visible at all times with details of the liquid being stored, as described in
Section 1(3), including its density and concentration. This shall be without prejudice to any labelling
required by other legislation.
(2) The operating regulations set out in the German Ordinance on Installations for Handling
Substances Hazardous to Water [Verordnung über Anlagen zum Umgang mit wasser-
gefährdenden Stoffen - AwSV] must be observed.
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TRwS 791-1:2015-02
Technische Regel wassergefährdender Stoffe (TRwS) – Heizölverbraucheranlagen
Teil1: Errichtung, betriebliche Anforderungen und Stilllegung von
Heizölverbraucheranlagen
Z72155.20
General technical approval/
General design certification
No. Z-40.21-432
(3) Prior to filling, a check must be carried out to ensure that the medium to be stored corresponds
to that named on the sign referred to in Paragraph (1) and that the temperature of the medium
with which the container is to be filled will not cause the permissible operating temperature set out
in Section 1(3) to be exceeded. Furthermore, a check must be carried out to establish the amount
of liquid that the container is able to store and whether the limit indicator/overfill protection is in
good condition.
(4) Filling and emptying shall be effected by means of permanently connected lines (pipes or
hoses) unless the water law and occupational health and safety regulations provide for an
exception.
(5) Container systems may only be filled via permanently connected pipes or hoses from road
tankers or demountable tanks using a pump with a delivery rate of up to 1200 l/min and a zero
delivery pressure of up to 10 bar overpressure if they are equipped with devices in accordance
with Section 3.2.2(3).
(6) The filling process must be carried out under supervision at all times. Once the filling process
is complete, compliance with the permissible fill level set out in Section 4.1.2 must be checked.
(7) For the purposes of the scope of application governed by this decision (static storage), the
containers must be emptied prior to their transportation. The position in which filled or partially
filled containers have been installed cannot be changed.
(8) It is not permitted to repeatedly fill the containers with different media.
(9) When using the containers for the purpose of storing used lubricating, hydraulic or heat transfer
oils, these shall constitute collection containers with nozzles allowing for the safe connection of a
fixed pipeline or removable line for use by qualified personnel (not for general use).
4.2
Upkeep, maintenance
(1) Measures to rectify damage are to be clarified in consultation with a competent expert in the
field of plastics
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, with the assistance of the applicant where necessary.
(2) The use of solvents to clean the insides of containers (e.g. for the purposes of an inspection)
is not permitted. Accident prevention regulations and provisions governing the use of chemical
cleaning agents and the disposal of any residue must be observed.
4.3
Inspection
4.3.1
Functional inspection/pre-commissioning inspection
(1) Once the container has been installed and the corresponding pipelines and safety equipment
have been assembled, a functional inspection must be carried out. This consists of a visual
inspection, a leak test, an inspection of the filling, ventilation and extraction lines and of the
other facilities.
(2) The functional inspection is not intended to replace the mandatory pre-commissioning
inspection, which must be carried out by an expert in accordance with water law; however, it is
possible to carry out both inspections at the same time.
Z72155.20
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must be
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in the legend
1.40.21-55/20
Page 9 of 10 | 08 September 2020
1.40.21-55/20
General technical approval/
General design certification
No. Z-40.21-432
4.3.2
Ongoing inspections/post-commissioning inspections
(1) The operator must perform a visual inspection at least once per week to ensure that the
container is not leaking. In the event that a leak is discovered, the unit must be taken out of service
immediately and the damaged container must be emptied if necessary.
(2) The operational inspection of the items of equipment to be used must be carried out in
accordance with their respective regulations.
(3) If the containers are operated in an area at risk of earthquakes, a specialist company within
the meaning of Section 62 of the AwSV
ensured after the occurrence of an earthquake.
(4) This shall be without prejudice to any inspections required by other legislation.
Holger Eggert
Head of Division
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Verordnung über Anlagen zum Umgang mit wassergefährdenden Stoffen (AwSV), 18. April 2017 (BGBl. I S. 905)
Z72155.20
1.40.21-55/20
General technical approval/
General design certification
No. Z-40.21-432 of 08 September 2020
Tank system (max. 5 tanks)
Limit
indicator
Delivery
Filling
Blow-moulded polyethylene (PE-HD) containers
with integrated collection container made of galvanised sheet steel
Overview – Container system
Z73092.20
1.40.21-55/20
Page 10 of 10 | 08 September 2020
11
shall check whether proper continued operation is
Certified
Brämer
circumferential
lid edge sealing
Ventilation
Annex 1
GB
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