Docsity
Docsity

Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity


Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan


Guidelines and tips
Guidelines and tips

Exam Requirements for Containment Surfaces & Pressure Components in Nuclear Plants, Exercises of High Pressure Vessels and Boilers

The examination requirements for containment surfaces and pressure retaining components in nuclear power plants. It covers various examination categories, such as e-a for containment surfaces, e-c for containment surfaces requiring augmented examination, e-f for dissimilar metal welds, and e-p for all pressure retaining components. The document specifies the extent and frequency of examinations, acceptance criteria, and inspection intervals for each category. It also notes that leakage tests may be deferred until the next scheduled leakage test in some cases.

Typology: Exercises

2011/2012

Uploaded on 07/17/2012

sashti
sashti 🇮🇳

4.5

(6)

114 documents

1 / 11

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
ARTICLE IME-2000
EXAMINATION AND INSPECTION
IME-2200 PRESERVICE EXAMINATION
(a) Examinations listed in Table IME-2500-1 shall be
completed prior to initial plant startup. These preservice
examinations shall include the pressure retaining por-
tions of components not exempted by IME-1220.
(b) When visual examinations are required, these
examinations shall be performed in accordance with
IME-2600, following the completion of the pressure
test required by the Construction Code and after applica-
tion of protective coatings (e.g., paint) when such
coatings are required.
(c) When surface examinations are required by Table
IME-2500-1, shop or field examinations in accordance
with NE-5000 for Class MC or CC-5500 for Class CC
may serve in lieu of the on-site preservice examinations,
provided:
(1) the examinations are conducted by the same
method with equipment and techniques equivalent to
those that are expected to be employed for subsequent
inservice examinations;
(2) the shop or field examination records are, or
can be, documented and identified in a form consistent
with those required in IMA-6000; and
(3) the examinations are performed after the pres-
sure test required by the Construction Code has been
completed.
(d) When a vessel, liner, or a portion thereof is
repaired or replaced during the service lifetime of a
plant, the preservice examination requirements for the
vessel repair or replacement shall be met.
(1) When the repair or replacement is performed
while the plant is not in service, the preservice examina-
tion shall be performed prior to the resumption of
service.
(2) When the repair or replacement is performed
while the plant is in service, the preservice examination
may be deferred to the next scheduled plant outage,
provided nondestructive examination in accordance with
the approved repair program is performed.
681
(3) When a system leakage test is required by
IME-5220, the preservice examination may be per-
formed either prior to or following the test.
(e) Preservice examination of welds, made as part
of a repair or a replacement program, joining a Class
MC or CC boundary and a liquid metal or cover
gas boundary, shall also comply with the preservice
examination requirements for the liquid metal or cover
gas component.
(f) Preservice examination for a repair or replacement
may be conducted prior to installation provided:
(1) the examination is performed after the pressure
test required by the Construction Code has been com-
pleted;
(2) the examination is conducted under conditions
and with equipment and techniques equivalent to those
that are expected to be employed for subsequent inser-
vice examinations; and
(3) the shop or field examination records are, or
can be, documented and identified in a form consistent
with that required by IMA-6000.
(g) When paint or coatings are reapplied, the condi-
tion of the new paint or coating shall be documented
in the preservice examination records.
IME-2400 INSPECTION SCHEDULE
IME-2410 INSPECTION PROGRAM
Inservice examinations may be performed during
plant operation or during plant outages such as refueling
shutdowns or maintenance shutdowns. System pressure
tests may be performed during plant outages or, if
allowed in the design and/ or technical specifications,
during plant operation. The requirements of either In-
spection Program A or Inspection Program B shall
be met.
docsity.com
pf3
pf4
pf5
pf8
pf9
pfa

Partial preview of the text

Download Exam Requirements for Containment Surfaces & Pressure Components in Nuclear Plants and more Exercises High Pressure Vessels and Boilers in PDF only on Docsity!

ARTICLE IME-

EXAMINATION AND INSPECTION

IME-2200 PRESERVICE EXAMINATION

(a) Examinations listed in Table IME-2500-1 shall be

completed prior to initial plant startup. These preservice

examinations shall include the pressure retaining por-

tions of components not exempted by IME-1220.

(b) When visual examinations are required, these

examinations shall be performed in accordance with

IME-2600, following the completion of the pressure

test required by the Construction Code and after applica-

tion of protective coatings (e.g., paint) when such

coatings are required.

(c) When surface examinations are required by Table

IME-2500-1, shop or field examinations in accordance

with NE-5000 for Class MC or CC-5500 for Class CC

may serve in lieu of the on-site preservice examinations,

provided:

(1) the examinations are conducted by the same

method with equipment and techniques equivalent to

those that are expected to be employed for subsequent

inservice examinations;

(2) the shop or field examination records are, or

can be, documented and identified in a form consistent

with those required in IMA-6000; and

(3) the examinations are performed after the pres-

sure test required by the Construction Code has been

completed.

(d) When a vessel, liner, or a portion thereof is

repaired or replaced during the service lifetime of a

plant, the preservice examination requirements for the

vessel repair or replacement shall be met.

(1) When the repair or replacement is performed

while the plant is not in service, the preservice examina-

tion shall be performed prior to the resumption of

service.

(2) When the repair or replacement is performed

while the plant is in service, the preservice examination

may be deferred to the next scheduled plant outage,

provided nondestructive examination in accordance with

the approved repair program is performed.

(3) When a system leakage test is required by

IME-5220, the preservice examination may be per-

formed either prior to or following the test.

(e) Preservice examination of welds, made as part

of a repair or a replacement program, joining a Class

MC or CC boundary and a liquid metal or cover

gas boundary, shall also comply with the preservice

examination requirements for the liquid metal or cover

gas component.

(f) Preservice examination for a repair or replacement

may be conducted prior to installation provided:

(1) the examination is performed after the pressure

test required by the Construction Code has been com-

pleted;

(2) the examination is conducted under conditions

and with equipment and techniques equivalent to those

that are expected to be employed for subsequent inser-

vice examinations; and

(3) the shop or field examination records are, or

can be, documented and identified in a form consistent

with that required by IMA-6000.

(g) When paint or coatings are reapplied, the condi-

tion of the new paint or coating shall be documented

in the preservice examination records.

IME-2400 INSPECTION SCHEDULE

IME-2410 INSPECTION PROGRAM

Inservice examinations may be performed during

plant operation or during plant outages such as refueling

shutdowns or maintenance shutdowns. System pressure

tests may be performed during plant outages or, if

allowed in the design and /or technical specifications,

during plant operation. The requirements of either In-

spection Program A or Inspection Program B shall

be met.

IME-2411 1998 SECTION XI — DIVISION 3 IME-

TABLE IME-2411-

INSPECTION PROGRAM A

Inspection Period, Minimum Maximum Inspection Calendar Years of Examinations Examinations Interval Plant Service Completed, % Credited, %

1st 3 100 100

2nd 7 33 67 10 100 100

3rd 13 16 34 17 40 50 20 66 75 23 100 100

4th 27 8 16 30 25 34 33 50 67 37 75 100 40 100...

IME-2411 Inspection Program A

(a) With the exception of the examinations that may

be deferred until the end of an inspection interval, as

specified in Table IME-2500-1, the required examina-

tions shall be completed during each successive inspec-

tion interval, in accordance with Table IME-2411-1.

Following completion of Program A after 40 years,

successive inspection intervals shall follow the 10 year

inspection interval of Program B.

(b) The inspection period specified in IME-2411(a)

may be decreased or extended by as much as 1 year

to enable an inspection to coincide with a plant outage,

within the limitations of IMA-2430(c).

IME-2412 Inspection Program B

(a) With the exception of the examinations that may

be deferred until the end of an inspection interval, as

specified in Table IME-2500-1, the required examina-

tions shall be completed during each successive inspec-

tion interval, in accordance with Table IME-2412-1.

(b) The inspection period specified in IME-2412(a)

may be decreased or extended by as much as 1 year

to enable an inspection to coincide with a plant outage,

within the limitations of IMA-2430(d).

TABLE IME-2412-

INSPECTION PROGRAM B

Inspection Period, Minimum Maximum Inspection Calendar Years of Examinations Examinations Interval Plant Service Completed, % Credited, %

1st 3 16 34 7 50 67 10 100 100

Successive 3 16 34 7 50 67 10 100 100

IME-2420 SUCCESSIVE INSPECTIONS

(a) The sequence of component examinations estab-

lished during the first inspection interval shall be re-

peated during each successive inspection interval, to

the extent practical.

(b) When component examination results require

evaluation of flaws, areas of degradation, or repairs in

accordance with IME-3000, and the component is found

to be acceptable for continued service, the areas con-

taining such flaws, degradation, or repairs shall be

reexamined during the next inspection period listed in

the schedule of the inspection program of IME-

or IME-2412, in accordance with Table IME-2500-1,

Examination Category E-C.

(c) When the reexaminations required by IME-

2420(b) reveal that the flaws, areas of degradation, or

repairs remain essentially unchanged for three consecu-

tive inspection periods, the areas containing such flaws,

degradation, or repairs no longer require augmented

examination in accordance with Table IME-2500-1,

Examination Category E-C.

IME-2430 ADDITIONAL EXAMINATIONS

(a) Examinations performed during any one inspec-

tion that reveal flaws or areas of degradation exceeding

the acceptance standards of Table IME-3410-1 shall

be extended to include an additional number of examina-

tions within the same category approximately equal to

the initial number of examinations during the inspection.

(b) When additional flaws or areas of degradation

that exceed the acceptance standards of Table IME-

3410-1 are revealed, all of the remaining examinations

within the same category shall be performed to the

extent specified in Table IME-2500-1 for the inspection

interval.

Table IME-2500-1 1998 SECTION XI — DIVISION 3

TABLE IME-2500-

EXAMINATION CATEGORIES

EXAMINATION CATEGORY E-A, CONTAINMENT SURFACES

Extent and Frequency of Examination

Examination

1

1st

Deferral of

Item

Parts

Requirements /

Examination

Acceptance

Inspection

Successive

Inspection to

No.

Examined

Fig. No.

Method

Standard

Interval

Inspection Intervals

End of Interval

9

E1.

Containment Vessel

Pressure Retaining Boundary

E1.

Accessible Surface Areas

2,3,

General Visual

(^7)

IME-3510.

Not permissible

Prior to each

Prior to each

Type A test

8

Type A test

8

E1.

Accessible Surface Areas

2,4,

Visual, VTM-

IME-3510.

N/A

IME-3510.

End of interval

End of interval

E1.

Vent System

Visual, VTM-

IME-3510.

N/A

Accessible Surface Areas

2,4,5,

IME-3510.

End of interval

End of interval

NOTES:(1) Examination may be made from either the inside or outside surface.(2) Examination shall include structures that are parts of reinforcing structure, such as stiffening rings, manhole frames, and reinforcement around openings.(3) Not including surface areas that are submerged or insulated.(4) Including the wetted surfaces of submerged areas and the portions of insulated surface areas that are necessary to meet the requirements of IME-1231(a)(4).(5) Examination shall include the attachment welds between structural attachments and the pressure retaining boundary or reinforcing structure, except for nonstructural and temporary

attachments as defined in NE-4435 and minor permanent attachments as defined in CC-4543.4. Examination shall include the weld metal and the base metal for

(^1)

⁄^2

in. beyond the

edge of the weld. (6) Includes flow channeling devices within containment vessels.(7) Refer to IME-3510.1 for General Visual examination method requirements.(8) Refer to IME-5220 for test requirements.(9) Deferral of inspection is not permissible in the 4th and successive inspection intervals.

REQUIREMENTS FOR CLASS MC COMPONENTS Table IME-2500-

TABLE IME-2500-1 (CONT’D)EXAMINATION CATEGORIES

EXAMINATION CATEGORY E-B, PRESSURE RETAINING WELDS

Extent and Frequency of Examination

Examination

1st

Deferral of

Item

Parts

Requirements /

Examination

Acceptance

Inspection

Successive

Inspection to

No.

Examined

Fig. No.

Method

Standard

Interval

Inspection Intervals

4

End of Interval

7

E3.

Containment Penetration Welds

3,

Visual, VTM-

IME-

25% of the total num-

25% of the total num-

Permissible

ber of welds

1,

ber of welds

1,

E3.

Longitudinal

E3.

Circumferential

E3.

Flued Head and Bellows Seal Circumferential

Welds Joined to the Penetration

E3.

Flange Welds (Category C)

6

Visual, VTM-

IME-

25% of the total num-

25% of the total num-

Permissible

ber of welds

1,

ber of welds

1,

E3.

Nozzle-to-Shell Welds (Category D)

6

Visual, VTM-

IME-

25% of the total num-

25% of the total num-

Permissible

ber of welds

1,

ber of welds

1,

NOTES:(1) Examination shall include the weld metal and the base metal for

(^1)

⁄^2

in. beyond the edge of the weld.

(2) Welds shall be randomly selected throughout the containment and representative of the type of welds described by each item number.(3) Examination shall include welds made in accordance with Section III, Class MC, including those Class MC welds shown in Figs.

NE-1120-1 and NE-1132-1. (4) Different welds shall be selected for examination each inspection interval.(5) Includes only those welds subject to cyclic loads and thermal stress during normal plant operation.(6) Welded joint categories are as defined in NE-3351 for Class MC and CC-3840 for Class CC.(7) Deferral of inspection is not permissible in the 4th and successive inspection intervals.

REQUIREMENTS FOR CLASS MC COMPONENTS Table IME-2500-

TABLE IME-2500-1 (CONT’D)EXAMINATION CATEGORIES

EXAMINATION CATEGORY E-D, SEALS, GASKETS, AND MOISTURE BARRIERS

Extent and Frequency of Examination

Examination

1st

Deferral of

Item

Parts

Requirements /

Examination

Acceptance

Inspection

Successive

Inspection to

No.

Examined

1

Fig. No.

Method

Standard

Interval

Inspection Intervals

End of Interval

5

E5.

Seals

1

Visual, VTM-

IME-

100% of each item

100% of each item

Not permissible

E5.

Gaskets

1

Visual, VTM-

IME-

100% of each item

100% of each item

Not permissible

E5.

Moisture Barriers

2,3,

IME-2500-

Visual, VTM-

IME-

100% of each item

100% of each item

Not permissible

NOTES:(1) Examination shall include seals and gaskets on airlocks, hatches, and other devices that are required to assure containment leak-tight

integrity. Disassembly of sealed or gasketed connections is not required solely for the performance of these examinations. (2) Examination shall include internal and external containment moisture barrier materials at concrete-to-metal interfaces intended to prevent

intrusion of moisture against the pressure retaining metal containment shell or liner. (3) Containment moisture barrier materials include caulking, flashing, and other sealants used for this application.(4) Examination shall include all accessible surfaces of internal and external containment moisture barriers.(5) Deferral of inspection is not permissible in the 4th and successive inspection intervals.

Table IME-2500-1 1998 SECTION XI — DIVISION 3

TABLE IME-2500-1 (CONT’D)EXAMINATION CATEGORIES

EXAMINATION CATEGORY E-F, PRESSURE RETAINING DISSIMILAR METAL WELDS

Extent and Frequency of Examination

Examination

1st

Deferral of

Item

Parts

Requirements /

Examination

Acceptance

Inspection

Successive

Inspection to

No.

Examined

3,

Fig. No.

Method

Standard

Interval

Inspection Intervals

4

End of Interval

6

E7.

Dissimilar Metal Welds

IME-2500-

Surface

IME-

50% of the total

50% of the total

Permissible

number of welds

1,

number of welds

1,

NOTES:(1) Examination shall include the weld metal and the base metal for

(^1)

⁄^2

in. beyond the edge of the weld.

(2) Welds shall be randomly selected throughout the containment and representative of the type of welds described by each item number.(3) Include dissimilar metal welds between the following combinations:

(a) carbon or low alloy steels to high alloy steels(b) carbon or low alloy steels to high nickel alloys(c) high alloy steels to high nickel alloys. (4) Different welds shall be selected for examination each inspection interval.(4) Includes only those welds subject to cyclic loads and thermal stress during normal plant operation.(5) Deferral of inspection is not permissible in the 4th and successive inspection intervals.

Table IME-2500-1 1998 SECTION XI — DIVISION 3

TABLE IME-2500-1 (CONT’D)EXAMINATION CATEGORIES

EXAMINATION CATEGORY E-P, ALL PRESSURE RETAINING COMPONENTS

Extent and Frequency of Examination

Examination/

1st

Deferral of

Item

Parts

Test

Examination

Acceptance

Inspection

Successive

Inspection to

No.

Examined

Requirements

Method

Standard

Interval

Inspection Intervals

End of Interval

E9.

Containment Vessel

System

10 CFR 50,

10 CFR 50,

Each repair,

Each repair,

Not permissible

1

Pressure Retaining Boundary

2

leakage test

Appendix J

Appendix J

modification, or

modification, or

replacement

replacement

E9.

Containment Penetration Bellows

10 CFR 50,

10 CFR 50,

10 CFR 50,

10 CFR 50,

10 CFR 50,

Not permissible

1

Appendix J

Appendix J

Appendix J

Appendix J

Appendix J

(Type Btest)

E9.

Airlocks

10 CFR 50,

10 CFR 50,

10 CFR 50,

10 CFR 50,

10 CFR 50,

Not permissible

1

Appendix J

Appendix J

Appendix J

Appendix J

Appendix J

(Type Btest)

E9.

Seals and Gaskets

10 CFR 50,

10 CFR 50,

10 CFR 50,

10 CFR 50,

10 CFR 50,

Not permissible

Appendix J

Appendix J

Appendix J

Appendix J

Appendix J

(Type Btest)

NOTES:(1) Leakage tests may be deferred until the next scheduled leakage test, if allowed by IME-5222.(2) If leak chase channels are utilized, they shall be unplugged or tested in accordance with 10 CFR 50, Appendix J, Type B test.

Fig. IME-2500-1 REQUIREMENTS FOR CLASS MC COMPONENTS Fig. IME-2500-

FIG. IME-2500-1 DISSIMILAR METAL WELDS

FIG. IME-2500-2 EXAMINATION AREAS FOR MOISTURE BARRIERS