5 Inspection, Examination, and Pressure Testing Practices Flashcards
5.1.2 Development of an Inspection Plan
Developed by
Inspector
5.1.2 Development of an Inspection Plan
Corrosion specialist shall be conducted when temperature > ______ and piping system that operate bellow ________ transition temperature
750 °F
ductile to brittle
5.2.5 Frequency of RBI Assessments
RBI assessment shall be updated at least every ______
10 years
5.5 General Types of Inspection and Surveillance
Revisions to the inspection plan shall be approved by
the inspector and/or piping engineer
5.8 Corrosion Under Insulation Inspection
CUI shall be considered for externally-insulated carbon and low alloy piping operating between 1
0 °F (–12 °C) and 350 °F (175 °C)
5.10 Injection Point Inspection
When designating an injection point circuit for the purposes of inspection, the recommended upstream limit of the injection point circuit is a minimum of ______ or________ upstream of the injection point, whichever is greater
-12 in. (300 mm), three pipe diameters
5.10 Injection Point Inspection
The recommended downstream limit of the injection point circuit is the second change in flow direction past the injection point, or _____beyond the first change in flow direction, whichever is less.
25 ft (7.6 m)
5.10 Injection Point Inspection
During periodic scheduled inspections, more extensive inspection should be applied to an area beginning ______upstream of the injection nozzle and continuing for at least _____ injection point.
12 in. (300 mm), ten pipe diameters
5.11 Pressure Testing of Piping Systems
pressure tests shall be performed in accordance with the requirements of______
ASME B31.3
5.11 Pressure Testing of Piping Systems
When a pressure test is required, it shall be conducted after_______
any heat treatment.
- 11 Pressure Testing of Piping Systems
- 11.2 Test Fluid
If the liquid is flammable, its flash point shall be at least______ or greater
120 °F (49 °C)
- 11 Pressure Testing of Piping Systems
- 11.2 Test Fluid
Piping fabricated of or having components of austenitic stainless steel should be hydrotested with a solution made up of potable water (see note), de-ionized/de-mineralized water or steam condensate having a total chloride concentration (not free chlorine concentration) of less than _____
50 ppm.
- 11 Pressure Testing of Piping Systems
- 11.2 Test Fluid
For sensitized austenitic stainless steel piping subject to polythionic stress corrosion cracking, consideration should be given to using an ____solution for pressure testing
alkaline-water
- 11 Pressure Testing of Piping Systems
- 11.3 Pneumatic Pressure Tests
As a minimum, the inspection precautions contained in ______ shall be applied in any pneumatic testing
ASME B31.3
- 11 Pressure Testing of Piping Systems
- 11.4 Test Temperature and Brittle Fracture Considerations
A number of failures have been attributed to brittle fracture of steels that were exposed to temperatures below their transition temperature and to pressures greater than ___ of the required hydrostatic test pressure or ___ of stress, whichever is less
25 %, 8 ksi
- 11 Pressure Testing of Piping Systems
- 11.4 Test Temperature and Brittle Fracture Considerations
To minimize the risk of brittle fracture during a pressure test, the metal temperature should be maintained at least____above the MDMT for piping that is more than 2 in. (5 cm) thick, and ____above the MDMT for piping that have a thickness of 2 in. (5 cm) or less
30 °F (17 °C), 10 °F (6 °C)
- 11 Pressure Testing of Piping Systems
- 11.6 Pressure Testing Alternatives
Appropriate ____shall be specified and conducted when a pressure test is not performed after a major repair or alteration
NDE
- 11 Pressure Testing of Piping Systems
- 11.6 Pressure Testing Alternatives
Substituting NDE procedures for a pressure test after an alteration is allowed only after the ______ and _____ have approved the substitution.
engineer and inspector
- 11 Pressure Testing of Piping Systems
- 11.6 Pressure Testing Alternatives
For cases where UT is used in lieu of a pressure test, the______ shall specify industry-qualified UT angle beam examiners
owner/user
- 11 Pressure Testing of Piping Systems
- 12 Material Verification and Traceability
The ____ shall assess the need for and extent of application of a material verification program consistent with API 578
owner/user
5.12 Material Verification and Traceability
Components identified during this verification that do not meet acceptance criteria of the PMI examination program (such as in API 578) would be targeted for replacement. The _____and ______ , in consultation with a corrosion specialist, shall establish a schedule for replacement of those components
owner/user, authorized piping inspector
5.12 Material Verification and Traceability
In lines in older process units operating above _____ and subject to sulfidation corrosion, carbon steel piping containing less than____silicon can corrode at significantly higher rates than higher silicon carbon steels (modern “silicon-killed” process)
500 °F (260 °C), 0.1 wt %
5.13 Inspection of Valves
Bodies of valves that are exposed to significant temperature cycling (for example, catalytic reforming unit regeneration and steam cleaning) should be examined _____ for thermal fatigue cracking
periodically
5.13 Inspection of Valves
If gate valves are known to be or are suspected of being exposed to severe or unusual corrosion-erosion, thickness readings should be conducted on ________, since this is an area of high turbulence and high stress.
the body between the seats
5.13 Inspection of Valves
Control valves or other throttling valves, particularly in high-pressure drop and slurry services, can be susceptible to _______
localized corrosion/erosion
5.13 Inspection of Valves
Critical check valves shall be adequately inspected or tested to provide greater assurance that they will prevent__________
flow reversals
5.14 In-service Inspection of Welds
Crack-like flaws and environmental cracking shall be assessed by an ____ in accordance with API 579-1/ASME FFS-1 and/or _____
engineer, corrosion specialist
5.14 In-service Inspection of Welds
Preferential weld corrosion shall be assessed by ______
the inspector
5.15 Inspection of Flanged Joints
Flanged joints that have been clamped and pumped with sealant should be checked for leakage at _____
the bolts
5.15 Inspection of Flanged Joints
If flanges are significantly bent or distorted, their markings and thicknesses should be checked against ________ before taking corrective action
engineering requirements
5.15 Inspection of Flanged Joints
Any fastener failing to do so is considered acceptably engaged if the lack of complete engagement is not more than _____
one thread.
