Leak Detection - CEMO DWT Transport-, Montage- Und Betriebsanleitung

GB
Page 3 of the notification dated 20 July 2001 of the amendment and supplementation of the General Building
Inspectorate Approval No. Z-40.11-280 dated 30 January 2001
Section 2.1 (Properties and Composition) is supplemented with Sections 2.1.5 and 2.1.6:
2.1.5

Leak detection

The external wall of the tank is translucent. Leaks in the internal wall can thus be detected fast
and easily. Fluids penetrating the monitoring chamber will be completely contained. The tanks
thus comply with Requirement R
stances hazardous to water and on specialist companies (VAwS).
2.1.6 Leak detection
Tanks on which a leak detector is connected to the monitoring chamber also meetRequirement
R as per the German ordinance regarding the handling of substances hazardous to water and
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on specialist companies (VAwS).
Paragraphs (3) and (4) of Section 5.1.1 (Tank Equipment) are replaced by the following para-
graphs:
(3) If a leak detector is connected, the connection for the measuring line must be provided at the
highest point of the monitoring chamber (see Appendix 1.2).
(4) If a low-vacuum leak detector is used (alarm triggered at the latest at -30 mbar), the connec-
tion for the suction line is located on the tank cover. In this case, thesuction line must be laid to
the lowest point of the monitoring chamber (see Appendix 1.3). In the case of tank systems as
specified in Paragraph (7), the use of low- vacuum leak detectors is permitted only if the differ-
ence between the alarm trigger point and the operating negative pressure of the leak detector
amounts to 45 mbar at most.
(5) If a high-vacuum leak detector is used (alarm triggered at the latest at -325 mbar), the leak
detector of type VL 320-420 made by SGB which has the General Building Inspectorate Ap-
proval No. Z-65.22-288. The connection for the suction line is located at the level of the measur-
ing line connection. A connection to the lowest point of the monitoring chamber is not required
if this high-vacuum leak detector is used.
(6) The installation of the leak detector and the connection of the monitoring chambers for tank
systems must be carried out in accordance with the specifications of the usability certification
issued for the leak detector by the Building Inspectorate.
(7) When used to store EL-grade heating oil and diesel fuel, the tanks may be connected to form
a tank system with up to 5 tanks of the same size in a row or hydro- mechanically unbranched
in two rows (block set-up). To do this, the tanks must be equipped with the filling system made
of plastic and steel, Type „C-B 3" made by Chemowerk GmbH and the non-communicating
emptying system Type „WK II" or „WK IV" made by Wilhelm Keller GmbH & Co. KG. When the
tanks are set up in a row (not block set-up), the non-communicating emptying system Type „C-
A 4" may be used. The standard DIN 4755-2
List A, Part 1, Filling and Removal System apply to the emptying system and are not part of this
general building inspectorate approval.
5 DIN 4755-2
80
as per the German ordinance regarding the handling of sub-
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February 1984 Oil furnace systems; heating oil supply, heating oil supply systems;
safety requirements, test
and Serial. No. 15.28 of the Building Regulations
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