Real-life examples and practical experiences.

Pro­tec­tive ven­ti­la­ti­on of mo­bi­le ma­chi­nes is a high­ly di­ver­se chal­len­ge that does not know any stan­dard so­lu­ti­on.

Each work en­vi­ron­ment is dif­fe­rent and is cha­rac­te­ri­zed by dif­fe­rent con­ta­mi­na­ti­ons. That is way the pro­tec­tion of your em­ployees from dust, ga­ses and other dan­ge­rous en­vi­ron­men­tal in­flu­en­ces nee­ds to be tailo­red pre­cise­ly to the re­spec­tive si­tua­ti­on. SEKA has the ex­pe­ri­ence de­ri­ved from count­less ap­p­li­ca­ti­ons.

Practical experiences

We would like to provide you with real-life examples demonstrating how we have solved typical challenges.


Solid waste landfills:
Foul odors are not the real problem

Not only foul odors are ty­pi­cal of mu­ni­ci­pal so­lid was­te land­fills. They are also cha­rac­te­ri­zed by high con­cen­tra­ti­ons of spo­res, fun­gi and vi­ru­s­es. An ad­di­tio­nal pro­blem is that pa­per, plas­tic foils and other sub­stan­ces can clog the air in­lets of the pro­tec­tive ven­ti­la­ti­on sys­tem.

SEKA uses an es­pe­cial­ly lar­ge-sca­le air in­let roo­ted over the roof of the ca­bin. It works with a re­la­tive­ly low air­flow which prevents that so­lid was­tes can clog the in­let gril­le of the pro­tec­tive ven­ti­la­ti­on sys­tem.

Con­side­ring the high con­tent of air­bor­ne fi­b­res and par­ti­cles in the am­bi­ent air we re­com­mend a me­di­um-si­zed S8.35 HEPA filter con­for­ming to HEPA filter class H14. Such fil­ters are also re­com­men­ded for as­be­stos. For fil­te­ring ga­ses and odors we re­com­mend an activated carbon filter, mo­del S8.4C with a volume of 4.0 kg.


Remediation of contaminated sites:
Targeted solution for any application

The re­me­dia­ti­on of con­ta­mi­na­ted sites can re­sult in an at­mo­s­phe­re con­tai­ning a va­rie­ty of pol­lut­ants. Be­si­des the high dust con­tent, this es­pe­cial­ly in­clu­des va­rious ty­pes of ga­ses.

It would be ir­re­s­pon­si­ble to give a blan­ket re­com­men­da­ti­on for pro­tec­tive ven­ti­la­ti­on of the ca­bin of a ma­chi­ne wi­thout any in­di­vi­du­al as­sess­ment of the exis­ting ex­po­sure. De­pen­ding on the si­tua­ti­on, howe­ver, of­fer the fol­lo­wing two ap­proa­ches can be sug­gested:

Use of a S8.25 HEPA fil­ter con­for­ming to the filter class HEPA H14 in com­bi­na­ti­on with alarge activated carbon filter with a mass of 9.0 kg. Such a lar­ge fil­ter of­fers suf­fi­ci­ent re­lia­bi­li­ty even in the case of un­ex­pec­ted “hot spots”. Sin­ce the most sui­ta­ble type of coal lar­ge­ly de­pends on the ap­p­li­ca­ti­on, we of­fer our con­sul­tan­cy ser­vices.

Use of a S8.25 HEPA fil­ter con­for­ming the filter class HEPA H14 in com­bi­na­ti­on with two different activated carbon filters equip­ped with different types of coal. This com­bi­na­ti­on is es­pe­cial­ly re­com­men­ded in com­bi­na­ti­on with sub­stan­ces with a boi­ling point be­low 65°C. We sug­gest a com­bi­na­ti­on of an ABEK fil­ter and an AX fil­ter.


Hazardous waste sites:
Measures against unknown contaminations

In ha­zar­dous was­te sites an es­pe­cial­ly high le­vel of dan­ge­rous sub­stan­ces must be ex­pec­ted. Of­ten it is not pos­si­ble to pre­cise­ly de­ter­mi­ne the ex­act com­po­si­ti­on of the am­bi­ent air. The­re might be sub­stan­ces that bind oxy­gen or ex­pel air. Even rem­nants of war­fa­re must be ex­pec­ted.

In ad­di­ti­on, ha­zar­dous was­te sites are of­ten en­clo­sed with a tent or hall. Alt­hough this re­du­ces en­vi­ron­men­tal pol­lu­ti­on, the pol­lutant con­cen­tra­ti­on in the in­te­ri­or will even be hig­her. In ad­di­ti­on, the­re may also be a dan­ge­rous drop in the oxy­gen con­tent.

Ac­tiva­ted car­bon fil­ters are usual­ly not suf­fi­ci­ent to ful­ly fil­ter out the con­ta­mi­na­ti­ons to be ex­pec­ted in such ha­zar­dous was­te sites. For this re­a­son, SEKA re­com­mends the use of a compressed air system (ADLA). It works com­ple­te­ly in­de­pen­dent from the am­bi­ent air and re­pres­ents the only so­lu­ti­on to ful­ly pro­tect the ope­ra­tor of a con­struc­tion ma­chi­ne from any health ha­zards. For tem­pora­ry use, com­pres­sed air sys­tem can also be ren­ted.

Here you can find also an application example from the chemical industry.

Anwendung FendtRogartor Web


Overpressure cabins for tractors

A newly issued directive of the German Federal Ministry of Consumer Protection and Food Safety focuses on the issue of occupational safety in relation to the application of crop protection products.

According to EN15695, the driver of a tractor or tractor must be effectively protected against the adverse effects that can occur when applying pesticides and liquid fertilizers. With a pressurized driver’s cab and a standard-compliant filter system, SEKA provides a workplace that complies with statutory regulations.



Biological does not mean safe

The bio­lo­gi­cal pro­ces­ses ta­king place in com­pos­ting plants usual­ly do not only pro­du­ce foul odors. They of­ten also re­sult in dan­ge­rous con­cen­tra­ti­ons of am­mon. In ad­di­ti­on, high con­cen­tra­ti­ons of fun­gi, spo­res and fine dust are part of the sur­roun­ding at­mo­s­phe­re.

For pro­tec­tive ven­ti­la­ti­on sys­tems to be used for com­pos­ting sites, SEKA re­com­mends the use of a me­di­um size S8.35 dust fil­ter con­for­ming to filter class HEPA H14 in com­bi­na­ti­on with an activated carbon filter with a mass of 4.0 kg of K type coal which is es­pe­cial­ly sui­ted to ab­sorb am­mon.


Asbestos disposal:
Strong measures against critical fibres

The dis­po­sal of as­be­stos does not only come with high con­cen­tra­ti­ons of dust. The fi­b­res con­tai­ned in the en­vi­ron­ment are also es­pe­cial­ly cri­ti­cal, be­cau­se they are con­side­red to be an ex­tre­me­ly car­ci­no­ge­nic health ha­zard.

For as­be­stos dis­po­sal, SEPA re­com­mends ex­tra lar­ge HEPA fil­ters con­for­ming to filter class ULPA U15. This fil­ter class is two le­vels above fil­ters ac­cor­ding to class H13 and is able to re­lia­bly re­mo­ve as­be­stos fi­b­res. Fil­ter class U15 de­fi­ni­te­ly conforms to the class H filters ac­cor­ding to EN­60335 (dust re­mo­ving de­vices) de­man­ded by the Pro­fes­sio­nal As­so­cia­ti­on.

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