IWL-2310 REQUIREMENTS FOR CLASS CC COMPONENTS IWL-2421
(4) to determine the condition of concrete surfaces
affected by repair/replacement activities, in accordance
with IWL-5250.
(c) Visual examinations shall be performed directly
or remotely, with adequate illumination, by personnel
with visual acuity sufficient to detect evidence of degra-
dation.
(d) The Owner shal define qualification requirements
for personnel performing examinations of concrete and
tendon anchorage hardware, wires, or strands.
(e) The Owner shall define requirements for visual
examination of tendon achorage hardware, wires, or
strands.
IWL-2320 RESPONSIBLE ENGINEER
The Responsible Engineer shall be a Registered
Professional Engineer experienced in evaluating the
condition of structural concrete. The Responsible Engi-
neer shall have knowledge of the design and Construc-
tion Codes and other criteria used in design and con-
struction of concrete containments in nuclear power
plants.
The Responsible Engineer shall be responsible for
the following:
(a) development of plans and procedures for examina-
tion of concrete surfaces;
(b) approval, instruction, and training of concrete
examination personnel;
(c) evaluation of examination results;
(d) preparation or review of Repair/ Replacement
Plans and procedures;
(e) review of procedures for pressure tests following
repair/replacement activities;
(f) submittal of a report to the Owner documenting re-
sults of examinations, repair/replacement activities, and
pressure tests.
IWL-2400 INSERVICE INSPECTION
SCHEDULE
IWL-2410 CONCRETE
(a) Concrete shall be examined in accordance with
IWL-2510 at 1, 3, and 5 years following the completion
of the containment Structural Integrity Test CC-6000
and every 5 years thereafter.
(b) The 1, 3, and 5 year examinations shall commence
not more than 6 months prior to the specified dates
and shall be completed not more than 6 months after
such dates. If plant operating conditions are such that
examination of portions of the concrete cannot be
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completed within this stated time interval, examination
of those portions may be deferred until the next regularly
scheduled plant outage.
(c) The 10 year and subsequent examinations shall
commence not more than 1 year prior to the specified
dates and shall be completed not more than 1 year
after such dates. If plant operating conditions are such
that examination of portions of the concrete cannot be
completed within this stated time interval, examination
of those portions may be deferred until the next regularly
scheduled plant outage.
IWL-2420 UNBONDED POST-TENSIONING
SYSTEMS
(a) Unbonded post-tensioning systems shall be exam-
ined in accordance with IWL-2520 at 1, 3, and 5 years
following the completion of the containment Structural
Integrity Test and every 5 years thereafter.
(b) The 1, 3, and 5 year examinations shall commence
not more than 6 months prior to the specified dates
and shall be completed not more than 6 months after
such dates. If plant operating conditions are such that
examination of portions of the post-tensioning system
cannot be completed within this stated time interval,
examination of those portions may be deferred until
the next regularly scheduled plant outage.
(c) The 10 year and subsequent examinations shall
commence not more than 1 year prior to the specified
dates and shall be completed not more than 1 year
after such dates.
IWL-2421 Sites With Multiple Plants
(a) For sites with multiple plants, the examination
requirements for the concrete containments may be
modified if the containments utilize the same pre-
stressing system and are essentially identical in design,
if post-tensioning operations for each subsequent con-
tainment constructed at the site were completed not
more than 2 years apart, and if the containments are
similarly exposed to or protected from the outside
environment.
(b) When the conditions of IWL-2421(a) are met,
the inspection dates and examination requirements may
be as follows.
(1) For the containment with the first Structural
Integrity Test, all examinations required by IWL-2500
shall be performed at 1, 3, and 10 years and every
10 years thereafter. Only the examinations required by
IWL-2524 and IWL-2525 need be performed at 5 and
15 years and every 10 years thereafter.
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