author(s): matthew evatt - noao

Doc #: 2100-AD-015-0056 Revision: A

PROCEDURE FOR LIFTING 60 FT PERSONNEL LIFT FROM GARAGE TO C-FLOOR IN MAYALL TELESCOPE

Author(s): Matthew Evatt

Procedure For Lifting 60 Ft Personnel Lift From Garage To C-Floor In Mayall Telescope

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1. Contents Revision History .............................................................................................................................. 3

1. Purpose .................................................................................................................................... 4

2. Applicable To ........................................................................................................................... 4

3. Scope ....................................................................................................................................... 4

4. Definitions ................................................................................................................................ 4

5. Training .................................................................................................................................... 4

6. Safety ....................................................................................................................................... 4

7. Personnel, Equipment and Materials Required ...................................................................... 4

8. Procedure ................................................................................................................................ 6

9. Procedure Review .................................................................................................................... 8

10. Records ................................................................................................................................ 8

11. References ........................................................................................................................... 8

12. Calculations ......................................................................................................................... 9


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Revision History

Rev

Date Approved

Sections Affected

Reason for Change

Remarks and/or Change Details

Name

-- 5-Dec-2016 Initiated M. Evatt

Approved by:

SigEng

Name, ME Title

SigEM

Name, EL Maint

SigSci

Name, SciOps

Tammie Lavoie 17 February 2017 Tammie Lavoie, Safety Manager Date


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1. Purpose

The purpose of this procedure is to detail how to rig and lift a 60 foot personnel lift from the ground floor to the C-floor of the Mayall telescope. A personnel lift of this size will be required during DESI installation.

2. Applicable To

Mayall 4m telescope, DESI

3. Scope

The scope of this document includes: - Opening the 4m dome main floor hatch - Rigging and lifting the personnel lift from the ground floor up to the C-floor

4. Definitions

5. Training

Personnel working on this task must be trained in the following: 1. Crane operator (1 person)

2. Qualified rigger (1 person)

3. General craftsperson (2 people)

6. Safety

1. JHA Form

2. Daily Briefing Form

7. Personnel, Equipment and Materials Required

Personnel: 1. Crane operator (1 person)

2. Qualified rigger (1 person)

3. General craftsperson (2 people)

Equipment:

1. 60 foot articulating boom lift - for example, the JLG 600AJ articulating boom lift as shown

in Figure 1.


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Note: The JLG 600AJ articulating boom lift shown in Figure 1 is very similar to what we

will rent for the DESI Installation. The JLG 600AJ weighs 22740 lbf. (Source: https://www.jlg.com/en/equipment/engine-powered-boom-lifts/articulating/600-series/600aj?Cookie=language).

Note: The Genie S60 telescopic boom lift shown in Figure 2 was rented for use in

changing the damaged dome crane cables in 2007 in the Mayall telescope.

The Genie S60 weighs approx. 20521 lbf (Source: http://www.ritchiespecs.com/specification?type=Lifting&category=Boom+Lift&make=Genie&model=S60&modelid=108183).

2. Wire rope lifting sling assembly used to lift the hatch covers out of the main floor (Refer to

NOAO document 2100-AD-015-052 for removing the hatch cover)

3. 4 EA EA 12 ft Long x 3 inch wide lifting straps, capacity greater than 12400 lbs. For

example, McMaster Carr 9077T3 12 ft x 3 inch wide with 16400 lbs vertical capacity.

See Calculations Section at the end of this document for lift calculations.

4. 4 EA Shackles with capacity greater than 12500 lbs. For example, McMaster 8494T54 Black

Oxide Steel 1" Shackle with Screw Pin - 17000 lbf capacity, 1-1/8" Pin Diameter, 2-3/4"

Inside Width

See Calculations Section at the end of this document for lift calculations.

5. Flat washers for 1” shackle pin to center the boom lift’s lifting lugs on the shackles.

Figure 1. JLG 600AJ Articulating Boom Lift

Figure 2. Genie S60 Rigged for Lifting Through Hatch


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8. Procedure

1. Open main floor hatch referencing NOAO document 2100-AD-015-052 and 2100-AD-015-

052-JHA for instructions (JHA-01).

2. Rig personnel lift using one 12 foot x 3 inch x 12500 lbf (minium vertical lift capacity) strap

and one 12500 lbf (minimum lift capacity) lifting shackle per lifting lug on the personnel

lift. See Section 12. Center the lifting lugs on the shackle pins using washers as shown in

Figure 4 (JHA-02).

3. Lower the 50 ton crane hook down to the

ground floor (JHA-02).

4. Raise the boom and basket of the lift up

until the length of the boom lift is short

enough to fit through the open hatch. If

this is not done, the articulating boom lift

will not fit through the hatch (see Figure

5). Refer to Figure 2 and Figure 3 for

how the 60 ft Genie lift was configured when it was lifted through the hatch in 2007 for

work on the overhead crane cables (JHA-03).

Figure 4. Lifting Shackle with Centering Washers

Figure 3. 60 Ft Genie Being Lifted Through Hatch in 2007


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5. Tie two appropriately long tag lines to the boom lift to control swinging and rotation

during the lift (JHA-02). One of these will be held by a person on the ground to start, and

then the other will be held by a person on each floor as the load is lifted through the

hatches of each floor. As the load goes through hatches at each floor, the person holding

the tag line from the floor below will let go of it, then go up to the floor above it and be

ready to get the tag line there (JHA-04).

Figure 5. Envelope of 60 Ft Boom Lift vs Hatch Opening


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6. Set the lift on the Console floor approximately in the location shown in Figure 6.

7. Close the main floor hatch (per 2100-AD-015-0052 and 2100-AD-015-0052-JHA) (JHA-05).

8. Stow the crane.

9. Procedure Review

None

10. Records

1. JHA signature sheet; kept by safety office, scanned and stored \ets_share\Safety 2. Fall protection training: kept by Safety Office 3. Rigging, suspended load: kept by Safety office 4. Maintenance record

11. References

Call out procedures by number & title

DOCUMENT NUMBER DOCUMENT TITLE

NA KPNO Emergency Manual

2100-AD-015-0052 Procedure for opening main floor hatch

2100-AD-015-0052-JHA JHA for opening main floor hatch

JLG 3121615 JLG 600AJ Operator’s Manual (If this lift is the one rented)

Figure 6. Console Floor Location for Boom Lift


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12. Calculations


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author(s): matthew evatt - noao

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