§ 56.97-40 - Installation tests.

§ 56.97-40 Installation tests.

(a) The following piping systems shall must be hydrostatically leak tested in the presence of a marine inspector at a pressure of 11⁄2 .5 times the maximum allowable working pressure of the system:

(1) Class I steam, feedwater, and blowoff piping. Where piping is attached to boilers by welding without practical means of blanking off for testing, the piping shall must be subjected to the same hydrostatic pressure to which the boiler is tested. The maximum allowable working pressures of boiler feedwater and blowoff piping shall must be the design pressures specified in §§ 56.50-30(a)(3) and 56.50-40(b) of this subpart, respectively.

(2) Fuel oil discharge piping between the pumps and the burners, but not less than 500 pounds per square inch.

(3) High-pressure piping for tank cleaning operations.

(4)

Flammable or corrosive liquids and compressed gas cargo piping, but not less than 150

pounds per square inch

psig.

(

5

4) Any Class I, I-L, II-L piping.

(

6

5) Cargo oil piping.

(

7

6) Firemains

, but not less than 150 pounds per square inch

.

(

8

7) Fuel oil transfer and filling piping.

(

9

8) Class I compressed air piping.

(

10

9) Fixed oxygen-acetylene system piping.

(b) Installation testing requirements for refrigeration, fluid power, and liquefied petroleum gas cooking and heating systems may be found in part 58 of this subchapter.

(c) Class II piping systems shall must be tested under working conditions as specified in the section on initial service leak test, § 56.97-38.

[CGFR 68-82, 33 FR 18843, Dec. 18, 1968, as amended by CGFR 69-127, 35 FR 9980, June 17, 1970; CGD 72-206R, 38 FR 17229, June 29, 1973 CGD 73-254, 40 FR 40168, Sept. 2, 1975; CGD 95-028, 62 FR 51202, Sept. 30, 1997]