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National Technical Approval
No. Z-40.22-549
5
Provisions for use, maintenance, servicing and inspection
5.1
Use
5.1.1
General
(1) It should be noted that the containment units are only to be used for their intended
purpose.
(2) When using the containment units, it must be ensured that the approved containment
volume will not be exceeded if a container/vessel leaks into or onto the unit. For containment
units which can be used without a deck surface, the remaining residual volume of the unit
with incorporated containers and an ullage of 2 cm should be taken into account.
(3) The content of the largest container may not exceed the permitted volume and the total
content of the containers stored in the containment unit must not be more than ten times the
permitted containment volume. If the storage of substances hazardous to water is permitted
in other water protection areas, the containment unit in place there must be able to collect
the entire capacity of the installed containers.
(4) Where containment units are put together as surface systems, the respective installed
container must always be fully installed on a containment unit of the surface system. For
surface systems, the containment volumes of the individual containment units cannot be
added together. For surface systems, the permitted containment volume corresponds to the
respective containment volume of the individual containment unit on which the container is
installed.
(5) Containers/vessels containing substances hazardous to water with different compositions
and properties may only be placed in a shared containment unit if it is certain, or can be
proven, that the materials will not react dangerously with each other in the event of a leak.
(6) When storing containers/vessels made from different materials together, it must be
ensured that in the event of a leak, the material of nearby containers/vessels cannot be
corroded by the leaking substance.
(7) When containers/vessels are being used for filling (e.g. drums with a tap), the
handling/filling area must also be protected by the containment unit. Filling devices must not
extend beyond the edge of the containment unit.
(8) When using containers/vessels supported on feet, or with high surface loading on their
storage surface, load distribution measures should be implemented where necessary.
(9) Containers/vessels must be installed such that the containment unit remains visible, and
accessible enough to be checked.
(10) Vessels may be stacked if permitted under approved transport regulations. However,
stacks may not exceed 1.2 m in height.
(11) Approved loads for individual containment units are stipulated in Section 1 (2), Table 1.
(12) The walls of containment units must not be subject to any external loads (except from
liquid pressure in the event of a leak).
(13) Containment units may only be driven under and relocated when empty, using floor
transport (lifting trucks and forklifts). Re-positioning containment units which are loaded with
containers/vessels is not permitted.
5.1.2
Stored liquids
(1) The containment units may only be used with containers/vessels storing liquids in
accordance with Section 1 (5) and (6).
Z41782.16
National Technical Approval
No. Z-40.22-549
(2) Containment units used together as surface systems may only be used with containers
storing the liquids in paragraph (1) above if the connecting components are chemically
resistant to the liquids being stored.
5.2
Repair and maintenance
(1) When maintaining and repairing containment units, the operator of a storage system is
obliged to commission a specialist firm, within the meaning of § 3 of the Ordinance on
Facilities Dealing with Substances Hazardous to Water of 31 March 2010 (Federal Law
Gazette. I p. 377). This does not apply if this type of work is exempted from the specialist
requirement by state regulations, or the manufacturer of the containment units uses its own
specialist staff to carry out the work.
(2) Damaged containers and containment units that are not in perfect working order must be
taken out of service.
5.3
Inspections
(1) The operator is obliged to visually check at least once per week whether liquid has
escaped into the containment unit. Escaped liquid should be cleared up immediately. The
containment unit should be checked before further use and, if necessary, replaced.
(2) A rigorous visual inspection of the condition of the containment unit, including the
perforated plates and, if applicable, the connecting components used must be carried out
annually. Insofar as vessels are sited in it, these are to be removed from the containment
unit and, if necessary, the containment unit is to be cleaned.
(3) The results of the inspection carried out under (2) are to be logged and submitted to the
DIBt upon request.
(4) This shall not affect inspections required by other areas of law.
Holger Eggert
Head of division
Z41782.16
Page 8 of 9 | 18 November 2016
1.40.22-19/16
Page 9 of 9 | 18 November 2016
[Stamp]
1.40.22-19/16
National Technical Approval
No. Z-40.22-549, dated 18 November 2016
Polyethylene collection trays (injection moulded) with a
containment volume of 25 I, 35 I, 60 I and 120 I; combined
as a surface protection system
Materials
1
Containment units
(1) The body of the containment units may only be manufactured from ExxonMobil Chemical
1
HDPE HMA 025 black
and HDPE HMA 035 black
given for information in Table 1.
(2) A mixture of different moulding compounds is not permitted. Regranulates shall not be
used under any circumstances.
(3) The moulding compound must be fabricated with at least 70% virgin and 30% recycled
compound.
Table 1: Properties of HDPE HMA 025 black and HDPE HMA 035 black, for information
Property, Unit
Physical Properties
3
Density in g/cm
MFR (190/2.16) in g/10 min
Mechanical Properties
2
Tensile stress in N/mm
Elongation in %
Modulus of elasticity (secant, tension, short periods, 23°C)
2
in N/mm
Shore D-hardness (15 s)
Izod notched impact strength
HDPE HMA 025
2
in kJ/m
HDPE HMA 035
Other Properties
Oxidation induction time (OIT) at 210°C
in min
Carbon black dispersion (note)
*
The characteristic values provided are the result of materials testing
1
Moulding compound with 3% Masterbatch SAX Batch 099/81330 40 dye; UV-resistant
2
DIN EN ISO 1183-1:2004-05 Plastics - Methods for determining the density of non-cellular plastics - Part 1: Immersion
method, liquid pyknometer method and titration method
3
DIN EN ISO 1133-1:2012-03 Plastics - Determination of the melt mass-flow rate (MFR) and melt volume-flow rate
(MVR) of thermoplastics - Part 1: Standard method
4
DIN EN ISO 527-2:2012-06
Plastics - Determination of tensile properties - Part 2: Test conditions for moulding and
extrusion compounds
5
DIN EN ISO 868: 2003-10
Plastics and ebonite, Determination of indentation hardness by means of a durometer
(Shore hardness) (ISO 868:2003);German version EN ISO 868:2003
6
DIN EN ISO 180:2013-08
Plastics - Determination of Izod impact strength (ISO 180:2000 + Amd. 1:2006 +
Amd.2:2013); German version EN ISO 180:2000+ A1:2006 + A2:2013
7
DIN EN ISO 11357-6:2013-04Plastics - Differential scanning calorimetry (DSC) - Part 6: Determination of oxidation
induction time (isothermal OIT) and oxidation induction temperature (dynamic OIT) (ISO
11357-6:2008)
8
ISO 18553:2002-03
Method for the assessment of the degree of pigment or carbon black dispersion in
polyolefin pipes, fittings and compounds
9
Test report no.: 2411707, TÜV Süd, 18.02.2016 (filed at the DIBt)
Z41971.16
National Technical Approval
No. Z-40.22-549, dated 18 November 2016
Polyethylene collection trays (injection moulded) with a
containment volume of 25 I, 35 I, 60 I and 120 I; combined
as a surface protection system
Materials
2
Deck surfaces and accessories
2.1
Deck surfaces
(1) Gratings (perforated plates) made of polyethylene (PE-HD) are to be used as deck
surfaces. The design details are based on the drawings in Annex 1.9 and Table 2 below.
Table 2: Properties of grating (perforated plates)
Perforated plate
Weight
Minimum wall
for containment unit
[kg]
25 HD
1.73
35 HD
1.15
60 HD
1.73
120 HD
(2) Only the compounds in accordance with Section 1 of this appendix may be used for
manufacturing injection-moulded gratings (perforated plates).
(3) The moulding compound must be fabricated with at least 70% virgin and no more than
30% recycled compound. The use of regranulates is not permitted. A mixture of different
moulding compounds is not permitted.
2.2
Connecting components
If the containment units are combined together to form larger surface elements, connecting
components comprising a corner connector, a cover cross, a cover rail and a cover spacer in
accordance with Annex 1.10 with the properties listed below must be used:
Table 3: Properties of the connecting components
Connecting component
Material
Corner connector
See Section 1 of this annex
10
Cover cross
Cover spacer
Cover rail
10
2% Masterbatch MB UN ORANGE dye
Z41971.16
GB
Annex 2
Page 1 of 2
1
moulding compounds with the properties
Inspection Method
Characteristic Values*
2
DIN EN IS0 1183-1
0.964 - 0.966
3
DIN EN ISO 1133-1
8.0 - 8.2
4
27.1 - 27.9
DIN EN ISO 527-2
(50 mm/min)
9.2 - 10.5
1212 - 1260
DIN EN ISO 527-2
(1 mm/min)
5
DIN ISO 868
60 - 63
7.0 - 7.2
6
DIN EN ISO 180
6.9 - 8.2
3.3 - 4.2
7
DIN EN IS0 11357-6
8
ISO 18553
1.6 - 1.8
9
1.40.22-19/16
Annex 2
Page 2 of 2
Dimensions
Maximum load
thickness
( L x W x H )
[kg]
[mm]
[mm]
2.8
130
598×398×172
85
398×398×172
130
598×398×172
Dimensions
See Annex 1.10
PVC-U
1.40.22-19/16
11
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