Reporting - FLIR InfraCAM User Manual

12 – Introduction to building thermography
A = (2h(L + w)) + (Lw)
t
Identify the critical defect area A
■
0.1% of the total surface area.
A = A /1000
c t
If ∑A < A the building as a whole can be considered to have 'reasonably contin-
■
d c
uous' insulation.
12.3.8.7
Reports should certificate a pass/fail result, comply with customers requirements and
as a minimum include the information required by BSEN 13187. The following data
is normally required so that survey can be repeated following remedial action.
Background to the objective and principles of the test.
■
Location, orientation, date and time of survey.
■
A unique identifying reference.
■
Thermographer's name and qualifications.
■
Type of construction.
■
Weather conditions, wind speed and direction, last precipitation, sunshine, degree
■
of cloud cover.
Ambient temperatures inside and outside before, at the beginning of survey and
■
the time of each image. Air temperature and radiant temperature should be
recorded.
Statement of any deviation from relevant test requirements.
■
Equipment used, last calibration date, any knows defects.
■
Name, affiliation and qualifications of tester.
■
Type, extent and position of each observed defect.
■
Results of any supplementary measurements and investigations.
■
Reports should be indexed and archived by thermographers.
■
12.3.8.7.1
The choice between internal and external surveys will depend on:
Access to the surface. Buildings where both the internal and the external surfaces
■
are obscured, e.g., by false ceilings racking or materials stacked against walls may
12
not be amenable to this type of survey.
Location of the thermal insulation. Surveys are usually more effective from the side
■
nearest to the thermal insulation.
Location of heavyweight materials. Surveys are usually less effective from the side
■
nearest to the heavyweight material.
The purpose of the survey. If the survey aims to show risk of condensation and
■
mould growth it should be internal.
Location of glass, bare metal or other materials that may be highly reflective. Surveys
■
are usually less effective on highly reflective surfaces.
114
. Provisionally this is set at one thousandth or
c

Reporting

Considerations and limitations
Publ. No. 1558299 Rev. a200 – ENGLISH (EN) – February 12, 2007