what is the most critical course of action in restorative drying
to respond quickly
what is the standard care for water restoration professionals
... [Show More] developed by the restoration industry entitled
IICRC S500
to help protect technicians from the many hazards associated with contaminated water losses restores need to have ready access to several items these items protect for all
potential exposures to the body
respiratory protection regulations state that the employer must provide
medical evaluations fit testing and training
as a minimum medical requirement technicians performing water damage restoration services need medical consultation with their
primary health care physician for appropriate immunizations
the contract clearly states the agreement between the building owner and the restoration contractor the form specifies who is responsible for payment and the terms of
payment and should be signed before work begins
the most common safety hazards associated with water damaged structures results in
slips and falls
federal regulations apply to the handling of
lead-based paint and asbestos
after safety concerns have been addressed and the initial water source has been stopped the restore must complete an evaluation of the waters migration through the structure during this process to restore inspects all
potentially affected areas
the ultimate goal is to find the edge of water migration which moves in a three-dimensional path through the structure this is accomplished across carpeted surfaces using a
moisture sensor and across most hard surfaces using a moisture meter non-penetrating moisture meter
water from a clean source with no substantial risk of causing sickness or discomfort is said to be
category 1 clean water
what are the has a significant degree of chemical biological and or physical contamination is
Category 2
when water intrusion results from a grossly unsanitary Source or carries
pathogenic disease causing agents it is said to be Category 3
worker and occupant health and safety are the first priority on every sewage loss areas affected by Category 3 water intrusion are marked and posted as potentially hazardous
when resistance is encountered and Performing proper services in a category 3 water loss becomes a challenge restores
stop work immediately and prevent liability
losses where regulated or hazardous materials have contaminated the structure are considered
special situations
Third Party Experts are commonly referred to as indoor environmental professionals or IEPs
pre-existing conditions should be identified documented and communicated to all
materially interested parties during the initial inspection
when carpet delamination the loss of Integrity in the adhesives used to laminate the primary and secondary backing has occurred further damage is very likely for this reason when extensive carpet delamination is discovered ignitions must call it to the attention of all materially interested parties document the condition and
replacement
there are a number of causes for carpet delamination many of them related to
improper restoration activities
typical causes of carpet delamination are
folding or stretching carpet When Wet overly aggressive extraction improper specified underlay improper installation improper removal of taxes trip improper floating of carpet excessive wear pet damage
hygroscopic materials gain and lose moisture continually in an effort to equalize with the water content in the surrounding air mass the more hygroscopic the material the faster it will collect water vapor and the easier it will suffer
secondary damage
when water intrusion results in water running through wall cavities inspection access holes are used to ensure that blown in insulation has not compacted and lost it
r value
cleaning procedures must be employed before the drying of a category 2 water loss can continue at minimum affected underlay must be removed and disposed of and the carpet must be thoroughly cleaned using a hot water extraction method
various cleaning and decontamination procedures must be used on Category 3 water losses including the removal of all
porous materials affected by water intrusion
mini building materials will absorb excess water vapor and suffer damage especially when the air is allowed to remain above
60% relative humidity
abide by local laws and regulations when disposing extracted water ways water is best disposed of into a sanitary sewer
the primary goal of the initial extraction of the affected area is to contain further
migration of water within the structure
whenever a carpet must be disengaged from the topless strip a
knee kicker and carpet all must be used
if the carpet is to be reinstalled technician should avoid cutting carpet seams unless it is absolutely
necessary
how many gallons of water are present in a basement that measures 30 x 25 where water is standing at a depth of 6 ft 9 in
37867.5
the most effective way to speed up the drying process is to remove as much of the water in the liquid state as possible during
extraction face pore extraction will significantly slow the drying process
every cubic foot of standing water present in a structure contains
7.48 gallons
each gallon of water weighs
8.34 lb
there are three levels of biocidal activity according to the Environmental Protection Agency
sanitizer disinfectant sterilizer
whenever a chemical antimicrobial or biocide is used restorers must follow the
directions explicitly
most antimicrobials require that the area of application be
vacated by occupants and pants during application and for a period of time after application
establishing a dry standard is the best way to set restorative drying goals a dry standard is established by obtaining a moisture reading using
unaffected material
the numerical value from a moisture meter can be documented and used to monitor progress for this reason the amount of moisture absorbed by semi Power Structural Materials is measured most accurately with a moisture
moisture meter not a moisture sensor
because of their non-invasive nature and quick surveying capabilities non-invasive meters are the most effective tools for locating abnormal moisture behind and beneath finishing materials such
ceramic tile and vinyl floor coverings
a thermo hygrometer is used to monitor any air that can influence the
temperature and humidity within a restorative drying environment
after physically removing excess water the time required to dry wet materials is influenced most by the
rate of evaporation
as the water is rapidly evaporated the vapor water is removed by
dehumidification or ventilation
as moisture evaporates from a wet material the surface of the material becomes
cooler because energy is released from the material
condensation occurs when a vapor changes to a
liquid occurs as energy is removed
sublimation occurs when a solid changes to a vapor without going through a liquid phase
freeze drying sublimation is typically used with valuable saturated books and documents books and documents saturated with clean water maybe restorable if
Frozen or dried as quickly as possible
when the air temperature increases it can hold
more water vapor
evaporation will increase when
what materials are warmed dryer air is used air is moved rapidly across a wet surface
if a material is not drying well what would be the most effective method of increasing evaporation
warm the material [Show Less]