1. The following items are not covered by ASME B 16.5:
a. Class 150 flanges
b. Class 300 flanged fittings
c. Butt welded pipe caps
d. All of the above
2. In a system hydrostatic test, the maximum hydrostatic test pressure allowed for a flange is:
a. Not required
b. Conducted at 1.5 x class rating @ 100 0 F
c. Conducted at 25 psi above class rating
d. Required only for welded flanges
3. "High strength" bolting is described as equivalent to :
a. ASTM A 193 B5
b. ASTM A 193 B7
c. ASTM 320 GR 8
d. Any high carbon steel bolt
4. The pressure class ratings covered by ASME B16.5 are
a. 150, 300, 400, 600, 900, 1500, 2500
b. 150, 300, 400, 450,600,900,1500
c. 125, 150, 300, 400, 600, 900, 1500, 2500
d. 150, 300, 400, 600, 700, 900, 1000, 1500
5. The standard finish for raised face flanges per ASME B16.5 is :
a. 250 μ to 500 μ / inch
b. 125 μ to 250 μ / inch
c. 260 mm to 500 mm / inch
d. 250 μ / mm to 500 μ / mm
6. Socket weld and threaded flanges are not receommended for service beyond the following temperatures if thermal cycles are involved :
a. –20 – 6500F
b. –30 – 6000 F
c. –50 – 5000F
d. –50 – 5000F
7. "Low strength " bolting is "
a. 30 KSI yield strength
b. 30 KSI yield strength
c. 30 KSI tensile strength
d. 100 KSI yield strength
8. Ring joint sidewall surfaces ( gasket groove ) must not exceed ______________roughness.
a. 50 / in
b. 63 / in
c. 100 /in
d. 63 mm / in
9. Which of the following items must be marked on all flanges or flanged fittings?
a. Temperature
b. Actual working pressure
c. ASTM material specification
d. Hydrotest pressure
10. When used abve ________ 0F, class 150 flanges may develop leakage unless special precautions are taken regarding loads or thermal gradients.
a. 150
b. 300
c. 600
d. 400
11. The three basic parts to a flanged joint are :
a. Flanges, welds, gaskets
b. Flanges, bolts, nuts
c. Flanges, bolts, gaskets
d. Flanges, gaskets, threads
12. Class 600 flaged joints may develop leakage, unless special considerations for thermal gradients are applied at temperatures above ________ 0F.
a. 600
b. 800
c. 950
d. 750
13. A Class 400 flanged fitting must be hydrotested at what pressure, if the 1000F rating is 800 psig?
a. 1020 psig
b. 1200 psig
c. 1225 psig
d. Not required per ASME B16.5
14. The maximum temperature for hydrotesting a fitting is :
a. 12 0F
b. 1250C
c. Per Construction Code requirements
d. Per Owner / User system requirements
15. The minimum duration for hydrotesting on NPS 12 fitting shall be:
a. 2 min
b. 1 min
c. 3 min
d. No requirements to test fittings
