Laserfiche WebLink
,bra,..., 5 <br />MEMO TO: DIRECTOR OF PUBLIC WORKS/CITY ENGINEER, <br />MAYOR AND CITY COUNCIL <br />itFROM: PUBLIC WORKS FOREMAN <br />DATE: JULY 8, 1988 <br />SUBJECT: PURCHASE OF TRIPOD AND RETREIVAL WINCH <br />As you may or may not know, OSHA has recently adopted strict <br />regulations concerning confined space entry. OSHA is now <br />requiring the use of a man --rated tripod and safety retreival <br />winch for all entry into these spaces. Earlier this spring, <br />we received three demonstrations fror, different vendors on <br />their retreival equipment. Only two out of the three have <br />safety winches that are recommended to use by Underwriter's <br />Laboratories or Federal Insurance Board. U.L. is strongiy <br />recommending the use of a safety retreivai winch with one <br />primary break and at least one secondary emergency back-up <br />break. By purchasing one of these two units, we would be in <br />compliance with their regulations. <br />During these equipment demonstrations my crew and I noticed <br />some Aistinct advantages aril disadvantages regarding these <br />two tripods. The tripod offered by DBI/SALA did feature a <br />triple breaking system but no material winch used to lower <br />pails, equipment, drills and hammers down into a manhole to <br />perform work in that given area. This winch also required <br />the manual lowering and raising of cable which is dirently <br />hooked to the person entering the confined space. Due to <br />possible communication problems and freedom of movement <br />we foresee possibilities of confusion ir: using this <br />particular equipment. <br />The other proposed equipment is offered through Carlson <br />Equipment Company which offers the standard tripod plus a <br />retractable lifeline which is controlled through the <br />movement of the person actually entering the confin-:d <br />space. He does not have to rely on the man topside to <br />control his entry and exit. This particular winch will <br />automatically let line out for the person entering the <br />confined space and also take it up automatically when the <br />person is exiting. This system also offered a material <br />winch for lowering equipment, eta. down into the manhole. <br />Both of these systems, the DBI/SALA and Carlson Equipment <br />System, do offer fall protection incorporated into their <br />winch system. Though these two tripods are competitively <br />priced, I am strongly recommending the purchase of the <br />Miller Retractable Lifeline and Recovery system offered by <br />Carlson Equipment rather than the DBI/SALA Tripod. The <br />reason being is if we have a man in a manhole performing <br />maintenance and we need to lower him a pail of concrete or <br />any tools needed for the job, we would then under the <br />DBI/SALA System have to unhook him, raise the cable and then <br />lower the material. This is defeating the purpose of having <br />