Quality
Control - Reduces costs...enhances production
Construction contractors enhance their opportunity
for additional NATO and US Government business by maintaining a
strong Quality Control (QC) system. Scheduled goals are achieved
through regular production/QC meetings and proactive contractor
leadership that "builds it right the first time" and builds
it safely. QC staff manage specified QC processes, including submittals,
preventative controls, inspections, tests and documentation. The
contractor manages daily quality control of all trades from project
award through to completion inspections and acceptance by the customer.
The inspector, in its quality assurance (QA) role, assures that
the contractor's QC system is effective.
Three phase control concept.
The contractor's control of quality is divided into three phases
for each Definable feature of work (DFOW). A DFOW is a task that
is separate from other tasks and has control requirements unique
to that task. Typical examples of DFOW's are exterior water piping,
excavations for foundations , masonry walls, interior electrical
wiring, etc. Performance of all three phases is the contractor's
responsibility. Each control phases is an opportunity to prevent
problems and costly rework.
The preparatory phase
Is performed and documented prior to starting the DFOW: Example
actions include: reviewing and approving submittals, reviewing applicable
contract drawings, specifications, test requirements, safety requirements
and activity hard analysis, inspecting delivered materials and construction
to be interfaced with etc. Construction standards and contract interpretation
issues are discussed and settled before start of the DFOW to avoid
the need for "tear out" after work is in place. The preparatory
process pays dividends by locating and resolving conflicts in advance
of construction.
Contractor Responsibilities
Produce a quality product on time, safely and in compliance with
the contract. Provide a quality control system that prevents deficiencies.
Identify each proposed DFOW and establish a 3-phase control process.
Inspect construction and perform specified testing to ensure quality.
Track and correct any non-complying work. Provide submittals of
all products incorporated into the work. Document and maintain records
of all QC activities. Perform punch-out inspections and participate
in Pre-final and final acceptance inspections.
Plan of Action
Requirements for developing the QC plan are found in the QC specifications
of the contract. The contractor submits a QC plan showing how the
designated QC organization will proactively manage and control all
on-site operations, and off-site fabrication, e.g. structural steel,
pre-cast concrete, major systems.
Required Meetings
Prior to the start of work, a pre-construction conference, a QC
plan meeting and a coordination and mutual understanding meeting
are held. These meetings assure a complete understanding of the
QC system and clarify the interrelationships between contractor
and customer personnel. During construction, the contractor conducts
regular QC/progress meetings, preparatory and initial phase meetings.
The initial phase
is performed and documented at the beginning of each DFOW. This
is an opportunity for the contractor to get the work off to a proper
start in compliance with contract requirements and to establish
standards and quality of workmanship. Testing procedures and compliance
with safety standards are validated. The initial phase helps to
achieve preventative control and to reach early agreements on quality.
Submittals and Procedure Control
The contractor is responsible for review, approval and management
of submittals and for timely delivery of approved materials, fabricated
items and equipment to be installed. The contract lists the required
submittals. The QCM certifies that each submittal is in compliance
with the technical provisions of the contract. The contractor prepares
a submittals register and a network of scheduled activities, updated
each month to minimize the potential for construction delays due
to missing or unapproved materials or equipment. The schedule must
allow adequate time
for customer-approved submittals.
Testing
Testing is the contractor's responsibility and is essential to controlling
quality. The contractor must: Check the contract to determine required
on-site and off-site testing.
Select qualified personnel, labs, equipment and procedures that
comply with specified standards.
Schedule timely testing and follow up testing. Submit required testing
documentation in a timely manner. The QAR may check laboratories,
equipment and procedures for compliance.
The follow-up Phase
For each DFOW is surveillance, inspection and documentation of the
work to determine continuation of compliance with the contract requirements
and quality of workmanship confirmed during the preparatory and
initial phases. The follow-up phase may be performed on a daily,
routine or predetermined basis as required to ensure contract compliance.
The follow-up phase is more productive when preceded by thorough
preparatory and initial phases.
Completion inspections
Completion inspections by the contractor's QC organization ensure
a facility that complies with the contract for turnover to the customer.
When work is complete, the QCM conducts a punch out inspection.
After correction of the punch list work, the QCM participates in
a pre-final inspection and final acceptance inspection with the
customer. Effective QC action enables the contractor to expeditiously
schedule and complete outstanding compliance items. Prompt completion
allows full payment to be made.
Reporting
Documentation is the proof of QC efforts and contract compliance.
The required reports must be complete and accurate, must be validate
the adequacy of quality controls and must be submitted on time.
Daily production reports document prime and sub-contractors activities
and safety compliance. Daily QC reports list the DFOW, phase of
control, observations, results of control actions taken and any
corrective actions. Include complete information on the 3 phase
controls, inspections, tests, rejected work and safety monitoring.
Document instructions received from the customer. Each daily report
must be referenced to its associated Schedule Activity ID.
Quality Assurance Representative
Role
The quality assurance representative, QAR will review daily reports
and other required documentation to determine the adequacy of the
contractors QC system. The QAR' interest is that the contractor
maintains the necessary control to prevent any "rework"
or tear out. The QAR will emphasize inadequacies in the quality
control program instead of individual construction deficiencies.
QC+QA=CQM
Construction quality management (CQM) requires the combined efforts
of contractor QC personnel and customer QA personnel to achieve
our shared goals - quality construction built safely, on time and
within budget.
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