söndag 31 maj 2015
If duct cleaning
If duct cleaning is determined to be the best option:
1. Hire a duct cleaning contractor who is a member in good standing of the National Air Duct
Cleaning Association. Duct cleaning companies must meet strict requirements to become NADCA
members. Among those requirements, all NADCA Members must have certified Air System Cleaning
Specialists (ASCS) on staff, who have taken and passed the NADCA Certification Examination.
2. PROTECT building occupants during and after duct cleaning:
• Place a filter over supply and return grills to capture dust when HVAC system is placed back into
service after cleaning.
• Perform duct cleaning during hours when the building is unoccupied, such as nights and
weekends.
• Use containment barriers and proper ventilation equipment, such as “negative‐air” machines
equipped with high‐efficiency filters.
• Avoid the use of biocides and sealants. Even EPA‐registered biocides may pose health risks,
including eye, nose, and skin irritation.
• No biocides are currently EPA‐registered for use on fiberglass duct board or fiberglass‐lined
ducts. Both the EPA and NADCA recommend replacing wet or moldy fiberglass duct material.
lördag 9 maj 2015
High Level
High Level Ventilation Canopy Cleaning
1 Operatives to check all PPE, cleaning equipment and chemicals required for the task. Refer to COSHH assessments supplied for chemicals being used. Operatives to set out all ‘Caution/Warning’ signage required and cordon off cleaning area prior to work commencing.
2 Operatives are reminded that canopies can be fragile or may have loose screws or bolts, seams can be broken and surface dented or misshaped.
3 Operatives to erect access equipment e.g.. stepladder or ladder in the correct and safe manner. Ladders to be erected at the correct angle of 1:4 (75º). If working between 2-6 metres height ladders must be footed or an approved ladder stopper or stabiliser used.
4 Operatives to take care if leaning ladder on to canopy cover, if possible position ladder on to nearest solid surface instead, e.g. wall.
5 Operatives to wear tool belt with all tools attached, this will leave both hands free for climbing and descending ladder or step ladder. Operatives are reminded not to climb above 4 rungs from the tops of ladders or step ladders.
6 Operatives to clean canopy using the correct chemical on a clean cloth or ‘Greenie’.
1 Operatives to check all PPE, cleaning equipment and chemicals required for the task. Refer to COSHH assessments supplied for chemicals being used. Operatives to set out all ‘Caution/Warning’ signage required and cordon off cleaning area prior to work commencing.
2 Operatives are reminded that canopies can be fragile or may have loose screws or bolts, seams can be broken and surface dented or misshaped.
3 Operatives to erect access equipment e.g.. stepladder or ladder in the correct and safe manner. Ladders to be erected at the correct angle of 1:4 (75º). If working between 2-6 metres height ladders must be footed or an approved ladder stopper or stabiliser used.
4 Operatives to take care if leaning ladder on to canopy cover, if possible position ladder on to nearest solid surface instead, e.g. wall.
5 Operatives to wear tool belt with all tools attached, this will leave both hands free for climbing and descending ladder or step ladder. Operatives are reminded not to climb above 4 rungs from the tops of ladders or step ladders.
6 Operatives to clean canopy using the correct chemical on a clean cloth or ‘Greenie’.
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