QA versus QC iFluids Engineering Quality is a measure of excellence or a state of being free from defects, deficiencies, and significant variations, brought about by the strict and consistent adherence to measurable and verifiable standards to achieve uniformity of output that satisfies specific customer or user requirements.

1. Quality Assurance versus Quality Control
Item Quality Assurance, QA Quality Control, QC
1. Project
Procurement
QA provided Scope of Work,
Conditions of Contract,
Specification.
QC is to adopt and follow what are the
requirements in the Scope of work,
Condition of Contract, Specification.
And to execute the project as per such
standards in no more no less.
QC shall make sure that all works to be
executed as per standards and drawings.
2. Drawing
QA ensures drawings are submitted
and approved by the Local
Authorities and or Engineer for site
application.
QC will conduct periodical checks of
revisions and issue log of drawings to
staff to update them for the new
revisions. QC will withdraw uncontrolled
copy of drawings.
3. Materials
QA is to make sure materials is
submitted via Material Approval
Request (MAR) and shall ensure
compliance of specification.
QC is to Monitor the latest revision of
Material Approval Request (MAR) by
acquiring material log sheet from
Document Control. QC is to check
materials upon arrival on site to verify
compliance from the approved MAR. QC
is to conduct site surveillance for the
materials used on site.
4. Document
Controller
QA to record the outgoing and
incoming of the materials submittal
or MAR, Drawings and Related
Documents and make sure recorded
it in log sheets. Document
controlling process or procedure set
out in the company procedures shall
be followed.
QC shall make sure that such documents
are stamped and filed in a manner that it
can be searchable. When placed in box
files make sure clearly labeled.
QC shall stamped drawings with
"Controlled Copy" for the latest revision
and otherwise stamped as "Superseded".
Drawing shall Stamped "Issued for
Construction" when released for site use.
5. QA/QC
Engineer
Example: Ceramic tile Material
QA shall make sure that material has
MAR approved.
QC shall issue a Material Inspection for
checking with the Engineer. QC shall
verify the size, thickness, colour shade
and the supplier. Requirements from
approved MAR shall be verified by
means of such physical check.
6. Site
Activity
QA is concern with the fabrication of
Method Statement, Inspection and
Test Plan including Checklist for
each activity in order to meet the
requirements.
QC is to check and verify the activity,
material and tests by means of
Inspections as detailed in the MS and
ITP. Stages of activity that will satisfy
standard or requirements shall be written
on Checklist.