FAQ

Inspection watertight floor, Air Test and industrial sewer

WHEN IS A FACILITY OR PAVEMENT IMPERMEABLE?

The definition of impermeability is as follows: “Impermeable is the situation in which a fluid has not reached the side of a facility not loaded with fluid.”

DOES YOUR IMPERMEABLE SURFACE OR CONTAINMENT SYSTEM NEED TO BE INSPECTED?

Impermeable surfaces and containment systems may be required in your country.When you rope in SFA-Testsystemen for an inspection, we first always examine whether the qualification “impermeable” does apply to the object to be assessed. If a lighter system can suffice, SFA-Testsystemen will update you about it, and if required be helpful in the discussion related to it with the Competent Authority (e.g., municipality or province).

IS THE INDUSTRIAL SEWER ALSO TESTED?

The watertight containment system or surface is often connected to the industrial sewer. However, it is not always required for the industrial sewer to be assessed in the laws and regulations or licensing. In all cases, the Expert Inspector will point out the potential risks of soil contamination by company wastewater that is drained by a potentially defective industrial sewer to the user of the facility. SFA-Testsystemen then also advises its customers to subject the industrial sewer to regular inspection as well. We can determine the extent of impermeability for you using the pressuring of the sewer.

DELIVERY CHECK OF NEW IMPERMEABLE SURFACE OR CONTAINMENT SYSTEM

Upon constructing a new impermeable facility (surface, containment system, industrial sewer), the future user will benefit by knowing for sure that the facility built is actually also impermeable at all points.  You are paying for an impermeable surface or containment system, thus you also want a guarantee that it is impermeable. This assurance can be obtained by conducting a delivery check using the SFA Air Test System, which is something that may customers already do. All defects signalled with the SFA Air Test can then be established even before delivery at the buyer's cost. It goes without saying that based on this study (and any restoration), the Statement of Impermeable Facility is issued to this facility even directly. Contact us for the specification documents for a delivery inspection of your impermeable surface or containment system.

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OTHER ENVIRONMENTAL TESTS

An optimum result can be achieved by combining several required inspections and checks on site, with efficient use of resources.
Thus, we can combine the inspection programme for impermeable floors or hard surfaces as desired with activities that a re part of:

  • Sewer inspection
  • Groundwater monitoring
  • Steam return systems
  • Soil air monitoring
  • Measurement of ground resistance
  • Inspection of earthing
  • KB and water/sediment of underground tanks and pipelines
  • Etc.

Checking and maintaining fire-extinguishing equipment

WHICH 3 FACTORS PAY A ROLE WHEN FIRE OCCURS?

The three elements causing fire constitute the so-called fire triangle. The fire triangle consists of (1) inflammable material, (2) oxygen, (3) temperature. As long as one of these items is missing, no fire can occur.

WHAT KIND OF EXTINGUISHERS ARE AVAILABLE IN THE MARKET?

CO2 extinguisher: Operation: Hold extinguisher upright. Based on the flames, direct to 1 to 1.5 m from the origin of the fire. Hold  spout chute at handle.  Spray continuously on fluids. Very efficient for flames. Issues: Is only used for small fires. Be careful of frostbite: -78°C.

Powder extinguisher: Operation: Hold extinguisher upright. Based on the flames, direct to 3 to 4 m from the origin of the fire. Interrupted spray on solid substances. Spray continuously on fluids. Quick and efficient for flames. Independence: 15 sec. issues: Damage after extinguishing action, the powder creeps into the smallest crannies. Limits sight.

Water with fire extinguisher additive Operation: Hold extinguisher upright. Direct to the base of the flames, distance to the fire origin varies based on the spray. Continuous extinguishing action due to the foam layer. Efficient on residues on ignition. Interrupted spray on solid substances. Independence: 60 - 90 sec. issues: Little damage after extinguishing action.

Port. wall reel Operation:  Direct to the base of the flames, distance to the fire origin varies based on the spray. Efficient on residues on ignition. Interrupted spray on solid substances. Independence: unlimited. Issues: Damage after extinguishing action. Risk of fluids. Electrocution.

WHICH FIRE EXTINGUISHER SHOULD I USE WITH WHICH FIRE ORIGIN?

CO2 fire extinguisher: Is used only in small fires of type B (inflammable fluids) and type C (gases).

Powder fire extinguisher: Is used in fires of type A (solid substances), type B (inflammable fluids) and type C (gases). D powder is a special type of powder which is only suitable for metallic burns. Water with additive to fire extinguisher in fires of type A (solid substances) and type B (inflammable fluids).

Wall reel: Only efficient in fires of type A (solid substances).

It is different for each type of fire extinguisher, below is an estimate of average extinguishing times: CO2 extinguisher: 20 sec. Powder extinguisher: 15 sec. Water with additive fire extinguisher: 60 - 90 sec. Wall reel: unlimited.

WHAT IS THE LIFE CYCLE OF A PORTABLE FIRE EXTINGUISHER?

A fire extinguisher may be no more than 20 years old according to NEN 2559. However, the same standard says that a fire extinguisher needs to be refurbished after 10 years. It is cheaper from an economic perspective to purchase a new fire extinguisher after 10 years than to overhaul it.

DOES A FIRE EXTINGUISHER NEED TO BE CHECKED?

You, as a user, need to plan annual maintenance of the fire extinguisher and pressure bottle maintenance by an authorised person. This maintenance occurs in agreement with the prescribed standard in the matter of protection against fire and penetration. The frequency can be reported, taking environmental factors or special risks into account.

HOW MANY FIRE EXTINGUISHERS DO I NEED TO PLACE?

The number of fire extinguishers that actually need to be placed now is indicated in the new standard NEN 4001. A number of factors are assumed in this regard. How big is the risk of fire? How many people present? Size of the building. The bigger the risk, number of people in the building, the greater the number of extinguishers to be placed. For a big risk, you need to assume about 1 fire extinguisher per 100 m2, for least risk, you need to assume about 1 fire extinguisher per 300 m2. It may be either a powder or foam extinguisher. You can also place a carbon dioxide extinguisher but it must then be placed up on the strength.

CHECK FIRE EXTINGUISHERS 1 TIME PER YEAR OR NOT?

There has also been a change with respect to the test period of small fire extinguishers with the introduction of the use decision.  There is a lot of lack of clarity about this currently in the country. Maintenance needs to be redone once annually.  If the customer wishes a check 1x per two years, a period of one year will still be cut to one year!  Otherwise, the REOB maintenance company will not satisfy the standard. It must also be reviewed well whether there are other criteria which the object must satisfy. Perhaps a specifying law or regulation is in force with respect to the fire-prevention equipment. Besides, there is still fire insurance which can put down a requirement with respect to fire-prevention equipment. Even these laws, regulations and requirements of the fire insurer are often issued at least 1x per year! Thus, note well when agreements are made with respect to the test period of small fire extinguishing equipment. In many case, the check will remain 1x per year.

WHAT ARE THE REQUIREMENTS FOR INFLAMMABLE SUBSTANCES AND MATERIALS?

Plots or parts of plots where inflammable substances or materials are stored must be provided with sufficient protection per 150 m2 or a part thereof, consisting of: — one 6 kg extinguishing equipment with extinguishing substance ABC or BC powder or — one 6 l extinguishing equipment with water as extinguishing substance, water with additives or foam.  Even movable extinguishing equipment can also be applied instead of portable extinguishing equipment. One movable extinguishing equipment with contents of 50 kg powder of 45 l or 50 l foam thus replaces eight portable extinguishing equipment items with contents of 6 kg powder or 6 l foam, or five movable extinguishing equipment items with contents of 9 kg or 12 kg or 9 l foam. NOTE: The extinguishing substance is chosen as per table 1 in Nen 4001. The extinguishing equipment must be placed such that quick, safe and effective use is possible.

HOW MUST SMOKE DETECTORS BE MAINTAINED?

Except for periodic testing with the test switch, the smoke detector must moreover be cleaned once per year with a soft brush and the vacuum cleaner.  Clean the lid with a damp cloth as well. Switch off the mains voltage to the smoke detectors before you start cleaning them.  Do not forget to switch the power back on after cleaning. The batteries of the smoke detectors must be replaced at least once in 4 years.

HOW MUST SMOKE DETECTORS BE TESTED?

Test the smoke detector once per month by pressing on the test switch for +/- 20 seconds. The electronic buzzer must give the alarm signal. You always need to test the smoke detector after a long period of absence (e.g., vacation) as well as after replacing the battery or power failure. The smoke detector will be automatically reset to the monitoring state when the cause of the alarm (i.e., smoke) has completely disappeared. If the smoke detector does not satisfy the requirement, you need to get it repaired immediately or replaced by a recognised installer.