§ 2565. Static Liquid Pressure Testing.

(a) Each transfer pipeline system and mechanical loading arm must not leak when undergoing an SLPT of at least 125 percent of the maximum allowable operating pressure.

(b) The pressure tests required by this section shall be conducted in accordance with Part 195 of Title 49 of the Code of Federal Regulations as in effect on October 1, 1996, except that an additional four-hour leak test under Section 195.303 of Title 49 of the Code of Federal Regulations as in effect on October 1, 1996, shall not be required.

(c) A deadweight gauge capable of measuring to one-pound-per-square-inch (psi) increments shall be used during each pressure test. The deadweight gauge shall be calibrated to a standard directly traceable to the National Institute of Standards and Technology at least once every two years and shall have a valid Certificate of Traceability.

(1) Deadweight pressure readings shall be taken at least once each hour during the test.

(2) A pressure recording device shall continuously record the pipeline pressure versus time during the test. The pressure recording device shall be calibrated prior to every test.

(d) Test Temperature Data.

(1) Test temperature data shall be recorded as prescribed in the following subsections (d)(1)(A), (B) and (C):

(A) A temperature recording device shall continuously record the internal test medium temperature versus time during the test. The temperature recording device shall be calibrated prior to every test and have a resolution of plus or minus 0.1 degree Fahrenheit for a water test medium or plus or minus 0.01 degree Fahrenheit for any hydrocarbon test medium. The range of the recording device shall be suitable for anticipated temperatures.

(B) The ambient air temperature, wind speed, precipitation and cloud cover shall be recorded at the same interval the deadweight pressure readings are taken.

(C) The pipe wall temperature shall be recorded at the same interval the deadweight pressure readings are taken.

(2) In circumstances where the test temperature data cannot be recorded as required by subsection (d)(1) of this section, temperature measuring devices shall be placed so as to provide representative sample temperatures of test medium, ambient air and pipe wall. Resolution of instruments to measure temperature of pipewall or test medium shall be as specified in subsection (d)(1)(A) of this section. Pipewall temperature measuring probes shall be appropriately located, be firmly attached to the pipewall and insulated so as to minimize influence from ambient temperature and solar radiation.

(e) Where different sections of a pipeline or pipeline system are located in considerably different environments (e.g., in the open air or below ground or water), the temperature of each segment in each environment shall be monitored separately. For the purposes of pressure compensation calculations due to temperature variations, each segment's temperature in its respective environment shall be used. The total pipeline or pipeline system temperature change shall be determined by adding the temperature change of each segment and prorating the segment's length to the total pipeline length or pipeline system length. Alternatively, each segment in its respective environment may be treated as a separate pipeline under test and the compensated pressure variations due to each segment's temperature variations may be added to arrive at the system pressure variation.

HISTORY

1. New section filed 8-12-97; operative 9-1-97 pursuant to Government Code section 11343.4(d) (Register 97, No. 33).

2. Amendment subsections (d)(1)-(d)(1)(B) and (d)(2) filed 2-2-2007; operative 3-4-2007 (Register 2007, No. 5).

Note

Note: Authority cited: Sections 8755 and 8757, Public Resources Code. Reference: Sections 8751, 8752, 8755, 8756 and 8757, Public Resources Code.