PNEUMATIC TEST PROCEDURE COMPRESSOR AIR SYSTEM PIPE LINE CMM/PFBR/8-75-2-7034/PO CMM/PFBR/8-75-2-7034/PO/10043 /10043 dtd. 09.03.2007 PROCEDURE FOR PNEUMATIC TEST
1. Scope: This document covers the procedure and technical requirements for pneumatic leak testing of the compressor air system air lines.
3. Equipments and general requirements: a) b) c) d) e)
Air Air Com Compr pres esso sorr Flex Flexib ible le hose hose Calibr Calibrate ated d Press Pressure ure gauge gauge Tempor Temporar ary y pipin piping g set set Soap Soap sol solut utio ion n
4. Pre-setting: Pipe connected to equipments shall be isolated and instruments will be removed, by using standards metal plugs and blind flanges all points will be closed. Existing piping support will be used.
5. Pneumatic test pressure: The minimum leak test pressure shall be 4.4 bars, as measured at the pressure gauge fixed on the pipe line.
6. Procedure: All joints, including welds, shall be accessible and left uninstalled, unpainted and exposed for examination during the test joints. Piping systems shall have been completely checked for correctness. All lines, vessels and equipment shall be checked to insure the entire system can be completely drained after testing. Lines containing check valves shall have the source of pressure located in the piping upstream of the check valve so that the pressure is applied under the seat. Fix the hose pipe of air compressor along with the air supply valve to the free nozzle. Fill the pipe line with compressed air.
Preperared by Signature
Checked by
Approved by
Atlas Copco India ltd. Name
Ajesh Kamal
Puneeth Kumar R
PNEUMATIC TEST PROCEDURE COMPRESSOR AIR SYSTEM PIPE LINE
CMM/PFBR/8-75-2-7034/PO/10043 dtd. 09.03.2007
Document no.: AC/BHAVANI/PN/101
Rev. No. : 00 Pages: 2 of 2 Date: 20.07.11
During pneumatic testing care must be exercised not to exceed the specified design pressure by more than 10 percent. The pressure pipe line is held at design pressure for 10 minutes prior to raising the pressure to the test pressure. At test pressure shall be held for 30 minutes during which time to access within the exclusion zone will be allowed. All critical joints shall be inspected for any leakages by using soap solution. Leak identified shall be marked with marker pen and the system shall be depressurized prior to any repair or rectification work being undertaken. Depressurization of the system on completion of the inspection shall be by nominated vent valves taking into consideration any none return valves included within system. After rectifying the leakages, testing shall be carried out again as per same procedure.
7. Controlling and monitoring: Pipe line test shall be recorded in the test report.
8. Quality surveillance: The pneumatic leak testing shall be performed in presence of BHAVINI representative.
