![](media/image1.png){width="1.6666666666666667in"
height="0.5833333333333334in"}

**PC 2/3 WEST INSTALLATION PROCEDURE**

**[PHENIX Procedure No. PP-2.5.5.4-17]{.underline}**

**[Revision:A Date: 12-14-00]{.underline}**

**[Hand Processed Changes]{.underline}**

**[HPC No.]{.underline} [Date]{.underline} [Page Nos.]{.underline}
[Initials]{.underline}**

\_\_\_\_\_\_\_\_\_\_\_\_\_\_ \_\_\_\_\_\_\_\_\_\_\_\_\_\_
\_\_\_\_\_\_\_\_\_\_\_\_\_\_ \_\_\_\_\_\_\_\_\_\_\_\_\_\_

\_\_\_\_\_\_\_\_\_\_\_\_\_\_ \_\_\_\_\_\_\_\_\_\_\_\_\_\_
\_\_\_\_\_\_\_\_\_\_\_\_\_\_ \_\_\_\_\_\_\_\_\_\_\_\_\_\_

\_\_\_\_\_\_\_\_\_\_\_\_\_\_ \_\_\_\_\_\_\_\_\_\_\_\_\_\_
\_\_\_\_\_\_\_\_\_\_\_\_\_\_ \_\_\_\_\_\_\_\_\_\_\_\_\_\_

**[Approvals]{.underline}**

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

PHENIX S E & I Date Cognizant Scientist/Engineer Date

/Activity Manager

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

PHENIX Safety Date C-AD SAFETY Date

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_
\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

**[1.0 Purpose and Scope]{.underline}**

This note describes the procedure that will be used to lift and install
the Pad Chambers in the West Carriage of PHENIX.

The Pad Chamber Installation Fixture is composed of two parts: the
H-frame and the lifting fixture. The H-frame includes a pair of chambers
mounted on two aluminum rails. The lifting fixture is a rigid frame made
of box beam that is used to lift the H-frame to the top of the West
Carriage where it attaches to the top of two tower structures. The
towers are fixed to the North and South Arms of the West Carriage. Each
tower has a rail attached to its inner edge. The H-frame carrying the
chambers has four steel wheels which allow the chambers to ride the
rails down from the top of the towers into the gap between the West
Carriage RICH and EMCAL.

The chambers themselves weight 165 pounds. The H-frame around the
chambers weighs an additional 80 pounds. The lifting fixture weighs 950
pounds, with the frame weighing 770 pounds, plus 40 pounds of gearing,
20 pounds of motor, 120 pounds of drive shaft. The total of the lifting
fixture, H-frame and chambers is thus 1360 pounds.

2.  **[Responsibilities]{.underline}**

> The Local Subsystem Manager for the Pad Chambers is responsible for
> ensuring that the pad chambers have been correctly inserted into the
> H-frames designed to hold them during the installation and throughout
> the running period.
>
> The Local Subsystem Manager is responsible for conducting a load test
> of the installation fixture prior to installing the first sector of
> chambers.

3.  **[Prerequisites]{.underline}**

> Before any use of the installation fixture, it must be load tested at
> 125% of its maximum working load.

4.  **[Precautions]{.underline}**

> All personnel must be cleared from the West Carriage during the
> installation of the PC West chambers.
>
> The North East Locking Bolt must be in place before the Installation
> Fixture is lifted in order to keep the PC from moving during rigging.
>
> The slings being used to lift the fixture must be checked before the
> lift.

5.  **[Procedure]{.underline}**

```{=html}
<!-- -->
```
1.  Check that the West Carriage is clear of people working.

2.  Lift the spreader bar using the large crane hook in the IR.

3.  Attach a 36 inch sling to each of the four shackles on the
    installation fixture.

4.  Loop the ends of the slings over the trunnions

5.  Put on the trunnion covers to ensure the slings do not come off
    during lifting.

6.  Attach a 36 inch sling to the shackle at the center of the drive
    shaft support.

7.  Loop this sling over the small crane hook.

8.  Raise the large hook until the installation fixture is off the
    rolling cart.

9.  Raise the small hook until the installation fixture is at an angle
    of approximately 22.5 degrees.

10. Lift the large hook until the height of the installation fixture is
    level with the West Carriage Pad Chamber Support Towers.

11. Adjust the small hook until the angle of the installation fixture is
    at 22.5 degrees.

12. Bring the installation fixture over to the West Carriage.

13. Adjust the height and position of the crane until the alignment tabs
    on the installation fixture engage with the top of the towers.

14. Using the man-lift, check that the rails carrying the chambers on
    the installation fixture line up with the rails on the towers.

15. Strap the installation fixture to the tower to ensure that the
    fixture does not move during the rolling stage of the installation.

16. When satisfied with the alignment of the rails, remove the bolt
    locking the chambers to the installation fixture.

17. Engage the motor allowing the chambers to roll down the rails.

18. Immediately after the chamber has left the installation fixture,
    verify that the cable is in the cable guide.

19. When the chamber is nearing its location on the tower, stop the
    lowering process while the chamber has about a foot left to travel.

20. Attach the stop blocks inside the North and South rails, between the
    lower and upper wheels of the chamber frame.

21. Continue lowering the chambers until the top wheels are resting on
    the stop blocks.

22. Secure a bolt through the tower beam, rail, stop block and chamber
    frame locking the frame in place to the tower on both the North and
    South side.

23. Unbolt the cable from the chamber.

24. From the man-lift, pull up the loose cable and secure it to the
    installation fixture.

25. Remove the straps holding the installation fixture to the towers.

26. Lower the crane bringing the installation fixture to the rolling
    cart.

```{=html}
<!-- -->
```
6.  **[Documentation]{.underline}**

> All drawings for the installation fixture and H-frame are part of the
> PHENIX configuration control, and can be viewed in
> /phenix/u/sivertz/drawings/west_carriage on the rcf cluster.

7.  **[References]{.underline}**

> None.