Qinshan CANDU Project Construction Experiences and Lessons
Qinshan CANDU Project Construction Experiences and Lessons
Qinshan CANDU Project Construction Experiences and Lessons
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2003 February<br />
Steam generators (220 tons each), temporary roof (150 tons) pressurizer (103 tons), reactivity<br />
mechanisms deck (43 tons), feeder frames (40 tons each), fuelling machine bridges (16 tons<br />
each), condenser lower shells (270 tons each), turbine generator stator (280 tons), deaerator<br />
(90 tons) <strong>and</strong> major heat exchangers were among items installed using the heavy lift crane. On<br />
completion of major equipment installation, the temporary roof was replaced by a permanent<br />
reactor concrete dome. The open top method allowed work to be done from the top <strong>and</strong> from<br />
below, which increased work flexibility. Future use <strong>and</strong> experience with open top planning will<br />
result in further schedule reductions for <strong>CANDU</strong> projects.<br />
8.1.3 Information Technology <strong>and</strong> Engineering Tools<br />
TQNPC as owner supported the use of the new electronic tools, which contributed substantially<br />
to the successful management of the <strong>Project</strong>. <strong>Qinshan</strong> <strong>CANDU</strong> features optimized state-of-theart<br />
information <strong>and</strong> engineering tools <strong>and</strong> systems, including:<br />
a) Three-dimensional Computer Aided Design <strong>and</strong> Drafting Systems (3D CADDS)<br />
AECL had used CADDS technology in some parts of its <strong>CANDU</strong> reactor designs, but had<br />
not previously used this tool to produce Released for <strong>Construction</strong> design. A QA program<br />
<strong>and</strong> procedures for production were developed to enable CADDS to be used to issue formal<br />
construction documentation that satisfied the requirements of the QA program. The design<br />
information in CADDS was integrated with other AECL electronic management systems for<br />
controlling <strong>and</strong> managing materials <strong>and</strong> documentation. Material information extracted from<br />
CADDS, for example, carries a stock code number <strong>and</strong> a physical description, which are<br />
linked with AECL’s <strong>CANDU</strong> Material Management System (CMMS).<br />
Use of 3D CADDS in the design phase led to dramatic reductions in interferences among<br />
different design elements such as piping, cable trays, structural members <strong>and</strong> equipment.<br />
Using manual design techniques, such interferences in the past numbered in the thous<strong>and</strong>s for<br />
a major project <strong>and</strong> had to be corrected in the field, but with CADDS, they are substantially<br />
reduced.<br />
b) <strong>CANDU</strong> Material Management System (CMMS)<br />
CMMS identifies <strong>and</strong> tracks equipment <strong>and</strong> material from design through to construction <strong>and</strong><br />
operation of the station. CMMS is described in Section 11.<br />
c) Integrated Electrical <strong>and</strong> Control (IntEC) database<br />
IntEC is a state-of-the-art cabling <strong>and</strong> wiring system database developed by AECL. It was<br />
successfully used by <strong>Project</strong> participants, including construction contractors. IntEC provides<br />
wiring, cabling, connection <strong>and</strong> equipment information <strong>and</strong> includes live design (in Canada<br />
<strong>and</strong> USA) <strong>and</strong> as-pulled data (at Site) for all the wiring, cabling <strong>and</strong> connections. Design<br />
information in CADDS <strong>and</strong> IntEC is integrated with other AECL electronic management<br />
systems for controlling <strong>and</strong> managing materials <strong>and</strong> documentation.<br />
d) Asset Information Management (AIM) <strong>and</strong> TRAK integrated databases<br />
Configuration <strong>and</strong> control of documentation (which includes documents <strong>and</strong> drawings) are<br />
priorities for complex engineering projects. The AIM (Asset Information<br />
Management)/TRAK system for managing <strong>Project</strong> documentation provides all <strong>Project</strong><br />
participants with a common <strong>and</strong> real time view of all design <strong>and</strong> construction documents.<br />
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