ASME B16.5 PRACTICE QUESTIONS – CLOSED BOOK – APRIL 2002 1. ASME ASME B 16.5 16.5 doe doess not not cove coverr : a. Clas Classs 150 150 flan flang ges b. Class 300 flanged fittings c. Butt Butt wel welde ded d pip pipee cap capss d. All All of of th the ab above ove 2. The maximum maximum hydrostatic hydrostatic test test pressure pressure permitte permitted d for a flange flange in a system system hydrostatic test is : a. Not req required b. Conducted at 1.5 x class rating @ 100 0 F c. Conduc Conducted ted at 25 25 psi psi above above class class ratin rating g d. Requir Required ed only only for welded welded flange flangess 3. "High strength" strength" bolting bolting is described described as equivalent equivalent to : a. ASTM A 193 B5 b. ASTM A 193 B7 c. ASTM 320 GR 8 d. Any Any hig high h carb carbon on ste steel el bol boltt 4. The pressure pressure class rating ratingss covered covered by ASME ASME B16.5 B16.5 are a. 150, 150, 300, 300, 400 400,, 600, 600, 900, 900, 1500, 1500, 2500 2500 b. 150, 300, 400, 400, 450,600,900,1500 450,600,900,1500 c. 125, 125, 150, 150, 300, 300, 400, 400, 600, 600, 900, 900, 1500 1500,, 2500 2500 d. 150, 150, 300, 300, 400, 400, 600, 600, 700, 700, 900, 900, 1000, 1000, 1500 1500 5. The standard standard finish for raised raised face face flanges flanges per per ASME ASME B16.5 B16.5 is is : a. 250µ to 500 µ / inch b. 125 µ to 250 µ / inch c. 260 260 mm mm to to 500 500 mm / inc inch h d. 250 µ / mm to 500 µ / mm 6. Socket Socket weld and threaded threaded flanges flanges are not not recomme recommended nded for service service beyond beyond the following temperatures if thermal cycles are involved : a. –20 – 6500F b. –30 – 6000 F c. –50 – 5000F d. –50 – 500 0F 7. "Low "Low stre streng ngth th " bol bolti ting ng is 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 µ / in b. 63µ / in c. 100 µ/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. Hydro test pressure 10. When used above ________ 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 flanged 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 hydro tested at what pressure, if the 100 0F rating is 800 psig? a. 1020 psig b. 1200 psig c. 1225 psig d. Not required per ASME B 16.5 14. The maximum temperature for hydro testing a fitting is : a. 12 0F b. 1250C c. Per Construction Code requirements d. Per Owner / User system requirements
15. The minimum duration for hydro testing on NPS 12 fitting shall be: a. 2 min b. 1 min c. 3 min d. No requirements to test fittings
ANSWER KEY 1.c 2.b 3b 4a 5. b 6. c 7. a 8. b 9. c 10. d 11. c 12. d 13. b 14. a 15. c
