‘Sustainable jacket’ for Kloosterboer Rotterdam Cool Port

Sustainable building cold storage freezer warehouse in accordance with BREEAM-NL

ULO storage for fruit and other products



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‘Sustainable jacket’ for Kloosterboer Rotterdam Cool Port

Sprangers Bouwbedrijf in Breda commissioned Roma Isolatiesystemen to build the insulated construction for Kloosterboer's new state-of-the-art DC.

Most of the vegetables and fruit imported via deep sea transport arrive at the Maasvlakte. Rotterdam Cool Port a ‘trimodal terminal’, situated at the intersection of water, road and rail, and thus in an excellent position for exchanging goods with the container cluster on the Maasvlakte.


The Roma insulated construction concept focuses on preserving the cold conditions inside the building, and not allowing heat to enter. The goal of the building partners is to construct a sustainable DC with a BREEAM-NL certification of at least ‘Excellent’, which will enter operation from the second quarter of 2017. Metal insulated Roma coldstore panels are used for the exterior and interior walls, ceilings as well as roofs.

Roma does more than just make a good contribution to a high BREEAM-NL score. It also builds the internal cells in the DC in accordance with the Q-50 standard for airtightness. Managing director Paul Pallandt: ‘We are pleased that the well-known builder Sprangers selected us for this project. It is a great project in which we can display our expertise with longlife sourced materials, installation and detailing which meet the high requirements.’ Roma commenced building the refrigeration cluster at the City Terminal location in the Waal-Eemhaven in August.

The cooperation between Roma and Sprangers for client Kloosterboer dates from long ago. This includes the storage warehouses in the 1990s for Kloosterboer Vlissingen, and the first phase of the large freezer warehouse Kloosterboer Delta Terminal on the Maasvlakte in 2002.

Sustainable building cold storage freezer warehouse in accordance with BREEAM-NL

How can Roma Isolatiesystemen contribute to obtaining a BREEAM-NL certification with insulation building concepts?

What is BREEAM-NL?

The principals of more and more construction projects want to achieve BREEAM-NL certification. BREEAM-NL provides insight into how sustainable the project is. Independent assessors evaluate whether sufficient sustainable performances (credits) have been achieved for awarding the certificate. The Dutch Green Building Council (DGBC) awards projects for designs as well as for the completion of a new building or renovation project.

The benefits of BREEAM-NL:

  • Added value for properties
  • Tax benefits
  • Internationally recognised quality mark for sustainability
  • Contribution to a better environment
  • Contribution to an improved corporate image

  • Broad range for sustainability

    The assessment method of BREEAM-NL is specified in the BREEAM-NL guidelines. Every credit scores a number of points. A total of more than 100 credits can be obtained, divided into nine main categories, each with its own weighting factor. A BREEAM assessor evaluates whether sufficient points have been scored in the project. The number of stars on the certificate shows the qualification: one star stands for ‘pass’, while five stars indicate ‘outstanding’.

    With its products and services, Roma isolatiesystemen contributes to BREEAM-NL certification in the following categories:

  • Energy
  • Materials
  • Waste

  • Extra points can also be scored for certain categories on the basis of ‘Exemplary Performance’. The degree of energy efficiency for usable area with an industrial function can be set out clearly using the technical checklist for cold stores and freezer warehouses BREEAM-NL ENE 1.

    Innovation points

    Extra points can also be scored for innovation. One example is meeting the ‘Exemplary Performance’ requirements for a specific category. Another is the use of technologies independently of and supplementary to the prescribed BREEAM performances. This improves sustainability even more. Moreover, it stimulates others to increase the application in the market.

    BREEAM-NL projects

  • New premises for processed meats factory Berkhout/Langeveld/WDP Wijchen
  • New premises for slaughterhouse Hutten en Zonen in Heeten
  • New Distribution Centre building for Lidl in Heerenveen and Waddinxveen
  • New coldstore and deepfreeze warehouse Kloosterboer Cool Port in Rotterdam

  • Are you planning to build or renovate with a BREEAM label in mind?
Visit the website
    Would you like to know more about what Roma isolatiesystemen can mean for you in this respect? Please contact us.


    ULO storage for fruit and other products

    The gastight building concept. What is the idea behind a ULO storage?

    Creating optimum conditions in the coldstore to preserve the fruit longer, so that the consumer can enjoy fresh fruit with a great taste all year round.

    What is an Ultra Low Oxygen (ULO) cell exactly?

    In simple terms, a ULO storage is a gastight coldstore constructed from high quality insulated panels. Lowering the oxygen level and raising the CO2 value is called controlled atmosphere (CA) storage. Storage at an extremely low oxygen level is called ULO storage. 
During storage, fruit 'breathes' using oxygen (O2) and producing ethyleen or carbon dioxide (CO2). The situation in the ULO cell depends on the type and variety of fruit and can be as follows:

  • refrigeration with temperatures ranging from -2ºC to 5ºC
  • reduction of the oxygen (O2) level to 1.2%
  • increase of the CO2 value up to a maximum of 4%

    These conditions are controlled by the following process:

  • at least three times a week, samples of the cell air are taken using a measuring and control unit, in order to determine the respiratory quotient (RQ) and to correct the oxygen level automatically, if required.
    - If the oxygen level is too low, an aeration fan switches on. If the oxygen level is too high,
    CO2 is sprayed into the cell using a CO2-scrubber.
    - If the CO2 level is too high, the CO2 scrubber is activated which removes it from the air in the cold store.

  • After the harvesting, it is recommended that fruit is stored at high relative humidity of 90-95%, in order to limit dehydration as much as possible. The entire process ensures that the respiratory process of the fruit is slowed down. This CA or ULO storage process is also known as putting fruit to sleep.

    Sleep via Controlled Atmosphere (CA) and Ultra Low Oxygen (ULO)

    After fruit like apples and pears has been harvested, you can usually store it for a week. Refrigeration extends the life by a maximum of two months. If ULO and CA technology is used, we can extend it even further. It means that the fruit scarcely breathes at all, and can be stored for six to twelve months. Controlled Atmosphere (CA) allows us to raise the CO2 level if desired.

    Coma via Dynamic Controlled Atmosphere (DCA)

    Applying a Dynamic Controlled Atmosphere (DCA) makes it possible to keep the fruit even longer. This is achieved through continuous measurement of oxygen and CO2 values, among other things, as well as alcohol as an indicator of imminent fermentation, so that this can then be controlled automatically. Oxygen percentages of less than 1% are not uncommon. No chemical substance is used at all. Another sustainable advantage of DCA is that you can save around 20% in refrigeration costs. This is because when the apples and pears are in a ‘coma’, they generate less heat than when they are ‘asleep’.

    Physical dangers and safety measures for ULO cells


  • Danger of suffocation
  • Danger of falling from the top of the ULO cell through the inspection hatch

  • Safety measures:

  • Clear warning sticker in several languages
  • Light signals
  • Barred openings behind gastight inspection hatches
  • Special locks on the gastight entrance doors

  • The Dutch Fruit Growers Organisation (NFO) has drawn up a protocol for ULO storage and cell checks. It contains guidelines for safe working in and around ULO or CA cells, and the best way for taking samples from the cells.

    Do you have renovation or building plans for a ULO cell?

    The basis for optimum condition in a ULO cell is the objective of 100% gastightness of the cell. Roma Projects has developed the gastight building concept for this purpose. For applying this concept, Roma uses high quality insulated panels to build the coldstore. The precise fitting of the insulated panels and vapour-proof construction details guarantee a vapour-proof construction with optimally fitting joints. We give the coldstore a vapour-proof finish on the ‘warm’ outside. Careful sealing and gastight coating on the inside of the joints, profiles, ducts for pipes and finishes of the corners in walls and ceilings take care of the rest.

    With tailor-made gastight sliding and vertical lift doors Roma Products manufactures and installs itself, you can lay out the storage room the best way possible. Inspection hatches, test tubes and lung for storage of low-oxygen air complete the gastight concept.
    Before the ULO cell is put into operation, Roma measures the gas leakage rate against the standard of 0.1 cm² per 100 m³ cell volume.