CEMO DWT Información Técnica página 72

GB
National Technical Approval
No. Z-40.11-280
4 Implementation provisions
4.1 General
(1) When installing or setting up the containers and required pipeline system, the commission
must be placed with 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 has been excepted from the specialist
requirement by state regulations, or the container manufacturer uses its own specialist staff to
carry out this work.
(2) The company performing the work must confirm proper installation in accordance with the
manufacturer's installation instructions (see section 5.1.4) and the specifications in Annex 6.
(3) Steps to remedy damage should be taken in consultation with an an external expert in
water legislation or with the certification body.
(4) Maintenance must only be performed on the containers by qualified personnel.
(5) Damage and measures to correct it shall be assessed in consultation with a competent
expert on synthetic materials
(6) In areas subject to earthquakes in earthquake zones 1 to 3 pursuant to DIN 4149
containers shall be adequately secured in their positions so as to ensure that concentrated
individual loads shall not impact the containers in the event of an earthquake.
4.2 Container equipment
(1) The conditions for container equipment are based on the statutory regulations relating to
water, occupational health & safety and construction.
(2) Equipment shall be designed to prevent unacceptably high or low pressure and
unacceptable stress on the container wall.
(3) When using the containers as a container system, filling and emptying systems pursuant
to Section 4.2 (8) must be used exclusively.
(4) When connecting a leak indicator, the connection for the measurement lines must be
provided at the highest point of the interstitial space (see Annex 1.2).
(5) When a low-vacuum indicator is used (alarm sounds at -30 mbar at the latest) the
connection for the suction line shall be located on the container lid. In this case, the suction
line should run to the lowest point in the interstitial space (see Annex 1.3). For container
systems pursuant to Section 1 (5), the use of low-vacuum leak indicators is only permitted
when the difference between the alarm activation point and the operational underpressure of
the leak indicator is a maximum of 45 mbar.
(6) When a high-vacuum indicator is used (alarm sounds at -325 mbar at the latest) the
connection for the suction line shall be located at the level of the measurement line
connection. When using a high-vacuum leak indicator, a connection to the lowest point in the
interstitial space is not necessary.
(7) For container systems, the leak indicator pursuant to Paragraph (5) or Paragraph (6) and
the connection of the interstitial space must be installed according to the usability certificate
issued by the building authorities.
Experts from certification and monitoring agencies, and further experts to be named by DIBt on request
9
DIN 4149:2005-04
10
Z40365.16
72
, possibly with the involvement of the applicant.
9
Buildings in German Earthquake Zones – Design loads, analysis and structural
design of buildings
Page 7 of 11 | 22 July 2016
10 , the
1.40.11-45/16