7 Inspection Data Evaluation, Analysis, and Recording Flashcards
- 1 Corrosion Rate Determination
- 1.2 Point-to-Point Method
The authorized inspector, in consultation with a corrosion specialist, shall select the corrosion rate that _________the current process (see 6.3.3 for inspection interval determination).
best reflects
- 1 Corrosion Rate Determination
- 1.3 Statistical Analysis Method
Statistical analysis employing point measurements is not applicable to piping circuits with significant localized ___________ mechanisms (See additional notes and statistical analysis in 6.5)
unpredictable corrosion
7.3 Newly Installed Piping Systems or Changes in Service
A corrosion rate for a piping circuit may be calculated from data collected by the owner/user on piping systems of ________ in comparable service and comparable operating conditions.
similar material
7.3 Newly Installed Piping Systems or Changes in Service
If data for the same or similar service are not available, a corrosion rate for a piping circuit may be estimated from the owner/user’s experience or from __________ on piping systems in comparable service.
published data
7.3 Newly Installed Piping Systems or Changes in Service
If the probable corrosion rate cannot be determined by either method listed in 7.3a) or 7.3b), the initial thickness measurement determinations shall be made after no more than _______ of service by using nondestructive thickness measurements of the piping system
three months
7.4 Existing and Replacement Piping
For repaired or in-kind replacement piping, the corrosion rate shall be established based on the previous ____________ at the replacement location or the circuit average rate.
worse case measured rate
7.4 Existing and Replacement Piping
If calculations indicate that an inaccurate rate of corrosion has been assumed, the rate to be used for the next period shall be adjusted to agree with the ___________
actual rate found.
7.5 MAWP Determination
The MAWP for the continued use of piping systems shall be established using the __________
applicable code
7.5 MAWP Determination
Computations may be made for known materials if all the following essential details are known to comply with the principles of the applicable code:
a) upper and/or lower temperature limits for specific _____
b) _______of materials and workmanship,
c) inspection requirements,
d) reinforcement of openings,
e) any ____service requirements.
a) materials,
b) quality
c) inspection requirements,
d) reinforcement of openings,
e) cyclical
7.5 MAWP Determination
When the MAWP is recalculated, the wall thickness used in these computations shall be the actual thickness as determined by inspection minus ______________ before the date of the next inspection (see 6.3.3).
twice the estimated corrosion loss
7.6 Required Thickness Determination
For services with high risk, the piping engineer should consider ______________ to provide for unanticipated or unknown loadings, or undiscovered metal loss
increasing the required thickness
7.6 Required Thickness Determination
Table 7 in Section 12 of API 574 provides examples of minimum alert thicknesses and default minimum structural thicknesses for carbon and low alloy steel piping operating below ________
400 °F (205 °C).
7.7 Assessment of Inspection Findings
The following techniques may be used as applicable.
b) Assessment of General Metal Loss—API 579-1/ASME FFS-1, Part 4.
c) Assessment of Local Metal Loss—API 579-1/ASME FFS-1, Part 5.
d) Assessment of Pitting Corrosion—API 579-1/ASME FFS-1, Part 6.
e) To evaluate blisters and laminations, a Fitness-for-Service assessment should be performed in accordance with API 579-1/ASME FFS-1, Part 7.
f) To evaluate weld misalignment and piping distortions, a Fitness-for-Service assessment should be performed in accordance with API 579-1/ASME FFS-1, Part 8.
g) To evaluate crack-like flaws, a Fitness-for-Service assessment should be performed in accordance with API 579-1/ ASME FFS-1, Part 9.
h) To evaluate the effects of fire damage, a Fitness-for-Service assessment should be performed in accordance with API 579-1/ASME FFS-1, Part 11.
7.8 Piping Stress Analysis
Piping flexibility is of increasing concern the larger the diameter of the piping and the greater the difference between ambient and ________________
operating temperature conditions.
7.8 Piping Stress Analysis
Piping stress analysis to assess system flexibility and support adequacy is _______ performed as part of a piping inspection
not normally
7.8 Piping Stress Analysis
When unexpected movement of a piping system is observed, such as during an external visual inspection (see 5.5.5), the inspector should discuss these observations with _________ and evaluate the need for conducting a piping stress analysis.
the piping engineer
7.8 Piping Stress Analysis
Comparing predicted thermal movements with observed movement can help identify the occurrence of unexpected operating conditions and deterioration of ________
guides and supports
- 9 Reporting and Records for Piping System Inspection
- 9.1 Permanent and Progressive Records
Piping system __________ shall maintain permanent and progressive records of their piping systems and pressure- relieving devices
owner/users
- 9 Reporting and Records for Piping System Inspection
- 9.1 Permanent and Progressive Records
Permanent records will be maintained throughout the ________ of each piping system
service life
- 9 Reporting and Records for Piping System Inspection
- 9.2 Types of Piping Records
Piping system and pressure-relieving device records shall contain four types of information pertinent to mechanical integrity as follows.
a) Fabrication, Construction and Design Information to the Extent Available
b) Inspection ______
c) Repair, Alteration, and Re-rating Information
d) _________ assessment documentation requirements are described in API 579-1/ASME FFS-1
a) Fabrication, Construction and Design Information to the Extent Available
b) History
c) Repair, Alteration, and Re-rating Information
d) Fitness-for-Service
- 9 Reporting and Records for Piping System Inspection
- 9.3 Operating and Maintenance Records
Site operating and maintenance records, such as operating conditions, including process upsets that may affect mechanical integrity, changes in service, mechanical damage from maintenance should also be available to the ________
inspector
- 9 Reporting and Records for Piping System Inspection
- 9.4 Computer Records
Computer programs are particularly useful for the following:
a) ___________ the actual thickness readings;
b) calculating short and long-term corrosion rates, retirement dates, MAWP, and re-inspection intervals;
c) ________ areas of high corrosion rates, piping circuits overdue for inspection, piping close to the minimum required thickness, and other information
a) storing and analyzing
b) calculating short and long-term corrosion rates, retirement dates, MAWP, and re-inspection intervals;
c) highlighting
- 9 Reporting and Records for Piping System Inspection
- 9.6 Inspection Isometric Drawings (ISOs)
The primary purpose of inspection ISOs is to identify the location of ______ and to identify the location of any recommended maintenance.
CMLs
7.10 Inspection Recommendations for Repair or Replacement
A list of repair or replacement recommendations (includes recommendations for non-conformances) that impact piping integrity is required and shall be ____
kept current
7.11 Inspection Records for External Inspections
Results of external piping system inspections shall be __________
documented
7.13 Deferral of Inspections, Tests, and Examinations
Piping or pressure-relieving devices that are operated beyond the due date without a valid deferral in accordance with these requirements are _______ by this code
not permitted
7.13 Deferral of Inspections, Tests, and Examinations
All deferrals shall be ________
documented
- 13 Deferral of Inspections, Tests, and Examinations
- 13.1 Simplified Deferral
A simplified short-term deferral may be approved by the owner-user if all of the following conditions are met:
a) The current due date for the inspection, test, or examination has not been _________
b) The proposed new due date would not increase the current inspection/servicing interval or due date by more than ___ or _____, whichever is less.
c) A review of the current _________, as well as the piping or pressure-relieving device history, has been completed with results that support a short-term/one-time deferral.
d) The deferral request has the consent of the inspector representing or employed by the owner-user and an appropriate __________________
a) previously deferred.
b) than 10 % or six months
c) operating conditions
d) operations management representative(s).
- 13 Deferral of Inspections, Tests, and Examinations
- 13.2 Deferral
a) Perform a documented risk-assessment or update an existing ____
b) Determine if the deferral requires the implementation of, or modification to existing __________or operating process control limits.
c) Review the current _________ to determine if modifications are needed to support the deferral.
d) Obtain the consent and approval of appropriate piping personnel including the___________ representing, or employed by the owner-user and appropriate operations management representative(s).
a) RBI
b) integrity operating windows
c) inspection plan
d) inspector
