HEPI DRAWING UPDATE

Abstract:: REDRAW ORIGINAL DOCUMENTS ON NEW FORMATS, UPGRADE NOTES
DOES NOT AFFECT FORM FIT OF FUNCTION

Notes and Changes:: REDRAW ORIGINAL DOCUMENTS ON NEW FORMATS, UPGRADE NOTES
DOES NOT AFFECT FORM FIT OF FUNCTION. THE HEPI ACTUATORS ARE CONSIDERED A PURCHASE PART AND NOT INCLUDED IN THIS DOCUMENTATION UPDATE.
IN THE EVENT THAT PARTS NEED TO BE REORDERED, THE FOLLOWING ISSUE MUST BE REVIEWED:
1. THE HAM PIERS NEED TO BE REVIEWED IT APPEARS TO BE TO TALL TO PLACE THE SUPPORT TUBES AT NOMINAL HEIGHT AND THE TWO PIERS SHOULD BE MIRRORS OF EACH OTHER, THEY ARE NOT THE PLATES ARE SHIFTED AND THE HOLES DO NOT LINE UP.
2. THE BSC BELLOWS GUARD MODEL WAS NOT THE SAME AS THE ORIGINAL DRAWING, DUE TO MODELING TECHNIQUES IT WAS DECIDED TO IDENTIFY THE DISCREPANCIES ON THE DRAWING AND NOT TO REMODEL THE BELLOWS. THIS WAS DONE
3. THE PACKAGE SHOULD BE REVIEWED PRIOR TO ANY REORDERING OF PARTS. NO TOLERANCE STUDY HAS BEEN DONE.
4. THE PROCEDURES HAVE NOT BEEN UPDATED BY THIS DCN
5. THE PAINT USED ON THE HEPI PARTS AND PRINTS WERE A SPECIAL PAINT DEVELOPED FOR LIGO AND IS NO LONGER AVAILABLE

LIGO Document E1100015-x0