SCBA Tank Inventory "Aluminum O2 and SCBA tanks should be hydrotested every five years (DOT regulation), and replaced after 3 tests, or before 15 years from purchase (reference?). Composite SCBA should be hydrotested every three years (DOT reg). Once hydrotested, tanks need to be refilled." "HI AL = High Pressure (4500 psi) 30 minute, 45ft^3 aluminum tank" "LO AL = low pressure (2200 psi) 30 minute, 45ft^3 aluminum tank" Manufactured last hydro number of hydros needs hydro by retire by HI AL #1 Feb-92 Feb-01 2 Feb-06 Feb-07 HI AL #2 Mar-91 Feb-01 2 Feb-06 Mar-06 HI AL #3 Mar-92 Jan-96 1 Jan-01 Mar-07 HI AL #4 Mar-92 Jan-91 1 Jan-96 Mar-07 HI AL #5 Feb-92 Feb-01 2 Feb-06 Feb-07 HI AL #6 Mar-91 Dec-97 2 Dec-02 Mar-06 LO AL #1 Jul-89 Aug-96 2 Aug-01 Jul-04 LO AL #2 Jun-87 May-97 3 May-02 Jun-02 LO AL #3 Apr-87 Feb-01 5 Feb-06 Apr-02 LO AL #4 Jun-87 May-97 3 May-02 Jun-02 LO AL #5 Sep-91 Feb-99 1 Feb-04 Sep-06 LO AL #6 Sep-91 Feb-99 1 Feb-04 Sep-06 LO AL #7 Sep-91 Feb-99 3 Feb-04 Sep-06 LO AL #8 Jun-87 Apr-97 4 Apr-02 Jun-02 LO AL #9 Apr-91 Apr-97 2 Apr-02 Apr-06 LO AL #10 Sep-91 Feb-99 1 Feb-04 Sep-06 Years to hydro max age Jan-05 Jan-15