ML20042H010

Forwards Special Instructions Forwarded to Utils Re X-SAM Sys for Nuclear safety-related Cranes.Instructions Describe Actions for Making Critical Lifts Before Retrofit of Slide Device

ML20042H010
Person / Time
Site:	Point Beach, Duane Arnold
Issue date:	04/04/1990
From:	Thomas A EDERER, INC.
To:	Murley T Office of Nuclear Reactor Regulation
References
NUDOCS 9005170045
Download: ML20042H010 (6)

Text

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<EDERER e <" ~

INCORPORATED E

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04 April 1990 j

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% $si Via Federal Express I

-Office of Nuclear Reactor Regulation Nuclear Regulatory Commission Washington, D.C.

20555 i

Attention:

Mr. Thomas'Murly Director i

Reference:

Ederer X-SAM System for Nuclear Safety l

Related Cranes, Ederer letter dated 03 April 1990

Dear Sir:

i In response to urgent needs of our clients for hoist use,.we have provided special instructions for making critical lifts before

'l retrofit of the slide device.- This is to be handled by admini-strative control to verify that the slide-is not jammed before any critical lift.

Copies of our instructions to Iowa Electric and Wisconsin Electric are attached.

Yours truly,.

EDERER INCORPORATED Ashley Thomas 1

Vice President Engineering at:ta enclosures:

Fax.to Wisconsin Electric dated 04-April 1990 (2 pp)

I Fax to Iowa Electric dated 04 April 1990 (2 pp) 1 (complete copies in triplicate) i a

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ll1 2925 FIRST AVENUE SOUTH, SEATTLE, WA 98134 + POST OFFICE BOX 24708, SEATTLE,WA 98124 TEL:(206) 622 4421 + TWX: 910 444 2211 EDERER SEA

• ESL: 62840478

• FAX:(206) 623 8583

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04 April 1990 j

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Via Federe) Express Office of Nuclear Reactor Regulation Nuclear Regulatory Commission Washington, D.C.

20555 Attention:

Mr. Thomas Murly L

Director

Reference:

Ederer X-SAM System for Nuclear Safety Related Cranes, Ederer letter dated 03 April 1990 5

Dear Sir:

In response to urgent needs of our clients.for hoist use, we have provided special-instructions for making critical-lifts before retrofit of the slide device.

This in to be handled by admini-strative control to verify that.the r,lide is not Jammed before J

any critical lift.

Copies of our ir.structions to Iows Electric and Wisconsin Electric are attached.

l Yours truly, l

EDERER INCORPORATED Ashley Thomas Vice President Engineering i

at:ta enclosures:

Fax to Wisconsin Electric dated 04 April 1990 (2 pp)

Fax to Iowa Electric dated 04 April 1990-(2 pp)

(complete copies in triplicate) 1

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1 2925 FIRST AVENUE SOUTH, SEATTLE, WA 98134

• POST OFFICE BOX 24708, SEATTLE,WA 98124 TEL:(206) 622 4421

• TWX: 910-444 2211 EDERER SEA

• ESL: 62840478

• FAX:(206)623 8583 j

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EDEIRER

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04 April 1990 i

l FAX TRANSMITTAL 1-414-221-2010 l-To Wisconsin Electric Power Company Attn :

Mr. Bruce O. Sasman q

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From :

Mr. Ashley Thomas i

Vice President Engineering l

1 Subj :

X-SAM' Defect / Notification.

Ref Ederer Shop Order No. F-1440 4

In anticipation of-your possible need for use of the main or-auxiliary hoist systems before retrofit of the : slides, we: offer i

the following:

l I

With the system in.either the " brake' set" or " ready" condition, remove the side cover of the slide enclosure., Be ready to. catch j

g a small amount of oil.from the enclosure.

Now the slide opera-tion may be observed and the hoist accepted for-use if full lat-ching of the slide is verified.. Full latching is shown on draw-ing A-12858, Section C-c. In your maintenance manual.

Notice that the " finger" of item 52 is fully.past the " nose" of the slide, item 51.

If the finger rolleriis' stuck at the tip of the a

slide nose, then the slide is jammed-and may<not' allow setting of the drum brake if needed.

il Once the s11de is verified to be not jammed, the hoist may be used up until the brake is set again for any reason.

Then, again, the slide latching must be re-verified to be correct.

You may leave the side cover off temporarily if several verifications are anticipated in a short time span.

The cover should be re-placed if wait time goes beyond several days.

.I would expect only one verification of latching would cover many lifts, since there thould be no need to use the drum brake under normal condi-tions.

Also, you should observe the slide enclosure after-the first several minutes of use so.any excess oil leakage'can be cleaned up.

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POST OFFICE BOX 24708, SEATTLE, WA 98124 2925 FIRST AVENUE SOUTH, SEATTLE, WA 98134 TWX:910 444 2211 EDERER SEA -

• ESL:62840478 = FAX:(206)623 8583.

TEL:(206) 622 4421 a

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1 FA'X TRANSMIDTAL e

4-Visconsin E;.ectric Power Company W

'4 A r 1 19 0

!B bE8 Page 2 I trust this11nstruction will assist you in your.immediate needs for crane use.

Yours truly, EDERER-INCORPORATED

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Ashley Thomas Vice President Engineering atsta TOTAL PAGES = 3 Including Cover t

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EDERER em INCORPORATEC E

BBb 04^ April 1990

-FAX TRANSMITTAL 1-319-851-7364 To Iowa Electric Light & Power Attn :

Mr. Mike Hook From :

Mr. Ashley Thomas Vice President Engineering Subj X-SAM Defect Notification

-Ref Ederer Shop Order No. F-1475 In response to your need for use of the main hoist system before retrofit of the slide, we ar the following:

c With the system in either the

/ake set" or " ready". condition, remove the side cover of,the saide enclosure.

Be ready to catch a small amount.of oil from the enclosure.

Now the slice opera-tion may be observed and-the' hoist accepted for use if full lat-ching of the slide is verified.

Full latching is shown on draw-ing A-12859, Section C-c, in your maintenance manual.. Notice that the " finger" of item 52 is fully past the " nose" of the slide, item 51.

If the finger roller is stuck at the tip of the slide nose then the slide is jammed and may not allow setting of the drum brake if needed.

Once the slide is verified to be not dammed, the-hoist:may be used up until the brake is' set again for any reason.

Then, again, the slide latching must be re-verified to be correct.

You may leave the side cover off temporarily if several verifications are anticipated in a short time span.

The cover should be re-placed if wait time goes beyond several days.

I would expect only one verification of latching would cover many. lifts, since there should be no need to use the drum brake under normal condi-tions.

Also, you should-observe the slide-enclosure after the first several minutes of:use so any excess oil leakage can:be cleaned up.

2925 FIRST AVENUE SOUTH, SEATTLE, WA 98134 POST OFFICE BOX 24708, SEATTLE,WA 98124

TEL:(206)622 4421 + TWX: 910 444 2211 EDERER SEA

• ESL: 62840478.

• FAX:(206)623 8583

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FAX TRANSMITTA

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04 April 1990 l

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l I trust this instruction will assist you in your immediate needs for crane use.

t Yours truly,

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l EDERER. INCORPORATED A

Ashley Thomas Vice President Engineering at:ta l

TOTAL PAGES = 3 Including Cover l

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