API RP 581 - 3rd Ed.2016 - Add.2-2020 - Risk-Based Inspection Methodology

RISK-BASED INSPECTION METHODOLOGY, PART 2, ANNEX 2.A—MANAGEMENT SYSTEMS WORKBOOK 2.A-9
Table 2.A.8—Mechanical Integrity
1
2
3
4
5
Questions
Has a written inspection plan for the process unit been developed that includes the
following elements?
Possible
Score
a. All equipment needing inspection has been identified? 2
b. The responsibilities to conduct the inspections have been assigned? 2
c. Inspection frequencies have been established? 2
d. The inspection methods and locations have been specified? 2
e. Inspection reporting requirements have been defined? 2
Does the inspection plan referred to in Question 1 include a formal, external visual
inspection program for all process units?
a. Are all the following factors considered in the visual inspection program: the
condition of the outside of equipment, insulation, painting/coatings, supports and
attachments, and identifying mechanical damage, corrosion, vibration, leakage, or
improper components or repairs?
b. Based on the inspection plan referred to in Question 1, do all pressure vessels in
the unit receive such a visual external inspection at least every 5 years?
c. Based on this inspection plan, do all on-site piping systems that handle volatile,
flammable products, toxins, acids and caustics, and other similar materials receive
a visual external inspection at least every 5 years?
Based on the inspection plan, do all pressure vessels in the unit receive an internal or
detailed inspection using appropriate nondestructive examination procedures at least
every 10 years?
Has each item of process equipment been reviewed by appropriate personnel to
identify the probable causes of damage or failure?
a. Has this information been used to establish the inspection methods, locations, and
frequencies and the preventive maintenance programs?
b. Have defect limits been established, based on fitness-for-service considerations? 1
Is a formal program for thickness measurements of piping as well as vessels being
used?
a. When the locations for thickness measurements are chosen,
1. Is the likelihood and consequence of failure a major factor? 1
2. Is localized corrosion and erosion a consideration? 1
b. Are thickness measurement locations clearly marked on inspection drawings and
on the vessel or piping system to allow repetitive measurements at precisely the
same locations?
c. Are thickness surveys up to date? 2
d. Are the results used to predict remaining life and adjust future inspection
frequency?
2
1
2
2
5
5
1
3
2
2
Actual
Score