ML20058H181
| ML20058H181 | |
| Person / Time | |
|---|---|
| Site: | Mcguire, McGuire  |
| Issue date: | 06/15/1976 |
| From: | Sigman J, Sudduth A DUKE POWER CO. |
| To: | |
| Shared Package | |
| ML20058G963 | List: |
| References | |
| REF-GTECI-A-36, REF-GTECI-SF, RTR-NUREG-0612, RTR-NUREG-612, TASK-A-36, TASK-OR MP-O-B-7650-07, MP-O-B-7650-7, NUDOCS 8208030495 | |
| Download: ML20058H181 (10) | |
Text
e;. ]
g ..,,
- c. . .. . .
. DUKE ruwt.n t.v.tran t (1) ID lb: MP/0/B/7650/07
. PROCEDURE PREPAMTION
., PROCESS RECORD (2) STATION: McGuire Nuclear Station Chain Hoists - Safety Inspection (3) PROCEDURE TITLE:
~. .
(4) PREPARED BY: Al Sudduth h. gddub DATE: b!Hhb (5) REVIEWED BY: ?. 'DATE: (//5-/7f f
Cross-Disciplinary Review By: N/R: Xh/rk (6) TEMPORARY APPROVAL (IF NECESSARY):
By: (SRO) Date:
By: Date:
(7) APPROVED BY: .d* % . DATE: 4[#/75
- I kfg I yy
~
-s. .-
8208030495 820726 tord-re
. PDR ADOCK 05000369
- P PDR
, _m
?.;'.....- * '
j . * * ,, ,
DUKE POWER COMPM.T McCUIRE !!UCLEAR STATION CHAIN HOISTS - SAFETY INSPECTION 1.0 Purpose The purpose of this procedure is to provide instructions for performing periodic inspections of hoists - hand, pneumatic, and electric - which use either welded link or roller link chain to move the load. It is not appli-cable to hoists which use wire rope to move the load, such as hoists assoc-Refer to FJ/0/B/7650/05.
lated with the station's overhead cranes. . .
2.0 References- .
2.1 MISI B30.16 - Hoists 2.2 MP/0/B/7650/8, Hooks - Periodic Inspection 3.0 Personnel Requirements Personnel qualified to inspect hoists shall be designated by the Maintenan'cc Engineer. The assistance of the I & E Section is required.for periodic ~
inspections of electric hoists.
4.0 Safety Considerations 4.1 Equipment Clearance and Isolation .
N/A 4.2 Health Physics Considerations N/A .
- 4. 3 Special Safety Considerations N/A ,
5.0 _Station Status
~. ..
'. N/A .
.;., _ _. n ...
6.0 Prerequisites . . . . .-.....s.. . . - .u .: . .. .
- . ~ - ,
N/A ,
.c 7.0 Repair Parts . , . ,
N/A - .
-. .s -.....:------ --?- .,,, + . . .
.- 8.0 Special Tools -
For periodic chain inspection - Caliper capabic of measuring in the range . . .
** "of 12 to 24 inches.
9.0 Acceptance Requirements The presence of any of the following conditions requires that the hoist be
- ~ " T . removed from service for repair.
- - ;- _ ;,;g-- ,,g. ;.,.3 9.1 Slippage of the brake mechanism under load.
9.2 Twisted, broken, cracked, or damaged load chain links.
.__ y Q
e
,,,p.
(
y .. , , ,
V
[ 9.3, Excetsive wear of Icad epreckets or idic epreck2ts, esprcielly if che hetsrized by load chain slippags.
. 9.4 Excessive chain wear or stretch - greater than 21/2 percent elongation for welded link chain (11/2 percent for electric or air powered hoists) greater than 1/4 inch elongation for roller link chain.
P.5 Any damage to load bearing parts of the hoist such as worn, cracked, or distorted hood blocks, suspension housing, outriggers, hand chain
~
wheels, chain attachments, clevises, yokes, suspension bolts, shaf ts, gears, or bearings.
9.6 Brake mechanism - vorn, glazed, or oil contaminated friction dises, L worn pawls, cams, or ratchets. Corroded, stretched, or broken pawl spring's.
9.7 Roller link chain - twist in any five foot section exceeding 15 degrees or side bow in any five foot section exceeding 1/4 inch.
- 9.8 For electric and pneucatic hoists, in addition to the applicable por-tions of 9.1 through 9.7, any one of the following conditions 9.8.1 Malfunctioning controls, operating cechanis=s, or safety devices.
9.8.2 Air system leakage 9.8.3 Pitting or other deterioration of electrical contactors, limit switches, or push button stations.
10.0 Interference Items .
I N/A . ,
f 11.0 Procedur_e *
~11.1 Hand chain powered hoist. * , , . . . . e
~
11.1.1 Frequent inspection 'e -
~~
[ ,_. . ,
.11.1.1.1 Inspect braking system for evidence of-- slippage t . .
l-
~.
\
~~' ~~
under 1 cad. ~. ~'
- - 11.1.1.2 Inspect load ' chain for vorn, twisted, broken, crack-
, ed', or damaged links. Ensure that chain is free of 3 - I foreign catter which may be carried into hoist mech '
- - anism. ,
11.1.1.3 Visually inspect hook in accordance w'ith Section 11.1 k', ', '
of MP/0/A/7650/08. . .
11.1.1.4 Perform a general visual inspection of all load bearing parts of hoist to ensure that there is no
'irvidence of damage or excessive vcar.
11.1.1.5 If any suspected defects are found, consult acceptanc, l
' criteria, Section 9.0, to determine continued suitab=
l %
ility of tbc hoist for use. If hoist is found to
' ~
sj,*s- - "
be un uitablo 'or.u23, f rc=:v2 it frra c:rvic2 icmed-intely and return it to the tool issue vindow so
- - that it can be properly tagged. Attach a note to the defective hoist indicating the specific probico.
' 11.1.2 Periodic Inspection - Welded Link Load Chain licist 11.1.2.1 Perform the' checks of Section 11.1.1.
11.1.2.2 Test hoist under load (approximately 50 pounds per link in contact with sprocket) in hoisting and low-ering. directions and observe the operation of chain and sprockets. Ensure that chain fecds smoothly
~
into and a.iay from sprockets.
11.1.2.3 Cican load chain for inspection. Examine visually for gouges, nicks, weld splatter, arc strikes, c'orrosion, and distorted links. Slacken chain and
' move adjacent links to one side to inspect for wear.
If wear is observed, or stretching is suspected, the chain should be measured. . .
11.1.2.4 If chain shows no signs of excessive wear or stretch, complete the applicable sections of Data Sheet 01, Enclosure 13.1, and return data sheet along with the completed work requests to Maintenance Supervisor
- for Equip =ent History Files.
11.1.3 Chain Length Measurecent - Welded I. ink Load Chain
- 11.1.3.1 Select an unworn, unstretched length of chain; for
~' - '
exampic, at the slack end. _
Using
., . . .n 11.1.3.2 Suspend the ch.ain.. vertically under tension. , .. . . . a
. - - - - . . . ~ . . .
" ~
a caliper, measure the outside length of a convenient number of links approximately 12 to 24 inches overall
~
Record on Data Sheet #1.
~ .
- c. 11.1.3.3 Measure the same number of links in 'thc[nuspect i ngt
" ~
11.1.3.4 Calculate the percent clongation as shown on Data Sheet #1. Consult acceptance criteria, Section 9.0.
If chain is defective, handle as directed in step 11.1.1.5. f chain is suitabic for centinued use,.
complete Data Sheet #1 and return both data sheets to Maintenance Supervisor for Equipment llistory File:
e
~ W*H ***m . s e,-,. ,p .
11.1.4 Chain Length Measurem nt - Roller Link Chain 11.1.4.1 Suspend the chain with a light lord. Determine ths
- nominal picch of the chain either by ceasurement or consulting the manufacturer's literature. Determine how many pitches equals 12 inches. Record on Data Sheet #1. ,
11.1.4.2 Hessure this same number of pitches on suspect chain.
Record this measurement on Data Sheet #1. If this measurement is equal to or greater than 12 1/4 inches, the chain is defcetive. Handle the defective hoist in accordance with step 11.1.1.5. If chain is found to be suitabic for continued use, complete Data Sheet #1 and return both data sheets to Maintenance Planning for Equipment History Files.
11.1.5 Infrequent Inspection of Roller Link Chain 11.1.5.1 Remove chain from hoist and clean thoroughly in acid free solvent.
11.1.5.2 Visually inspect to ensure that all pins are in their original position, that all rollers turn f reely with light finger pressure, that all joints can be flexed with light hand pressure, and that none of the side plates have been spread open.
11.1.5.3 Ensure that the chain is free of pitting or other corrosion, gouges, nicks, or weld' splatter.
11.1.5.4 Replace any chain found to be defective in this
~
inspection.
11.2 Electric or Air Powered Chain Hoist Inspection 11.2.1 Trcquent Inspection 11.2.1.1 Perform the inspections given in' step 11.1.1.1 through 11.1.1.4. , , , , ,
11.2.1.2 Inspect all controls and operating mechanism to ensure they operate properly.
11,2.1.3 Inspect all safety devices to ensure freedom from malfunctioning. If hoist is equipped with limit switches, check each switch by sicwly moving the hoist to the limit and ensuring that switches proper-ly limit notion. .
'^~ - *-- a 4a--- >.o O g., , ,.g, ,
e ,
- ~~ w ev ~ eve-= - - s.~o wm , ,
.e ,.
11.2.1.4 En;uro that air cystea le in grcd ersditinn and f rec cf laaks.
11.2.1.5 Perform step 11.1.1.5, using Data Sheet #2, Enc-losure 13.2.
11.2.2 Periodic Inspection ,
11.2.2.1 Perform steps 11.1.2.1 through 11.1.2.3.
11.2.2.2 Inspect load brake and motor for signs of excessive wear.
11.2.2.3 Inspect electrical apparatus for signs of pitting, or any other deterioration of controller contactors, limit switches, or push button statioas. ,
11.2.2.4 Perform step 11.1.2.4, using Data Sheet #2. If chain requires measurement, perfora Section 11.1.3 or 11.1.4, as applicable, recording results on Data Sheet #2.
12.0 Restoration N/A .
13.0 Enclosures 13.1 Data sheet #1 .
13.2 Data Sheet #2 <
.. * . . . _ . . . . a. . ,...,..:.r,.,
. v '. :. -. %,. . . . . .. % .* 4.'s . .,.,s<. , ' . . .,4*.L. '.'::. . .
. . ;;4 ,
,w- .- r . . . = . . ...
. . . . , v. . . .
~ .
~- .~
~
- .. . ....~:
...,~,,,,,,,,,
.^ .... . - . ... . ..
.s .
. .. . [ .. . ,
e
- . . . . . - - ._, .:.g,.,.,,,...,.,
, . . , .. .,,..,..,2j...-..,.,..,..,
s
, - , , . , . - .-. m = . . __
m* . . ..
n
- WR N2.
. t pagg DUKE POWER COMPANY
., McCUIRE NUCLEAR STATION CHAIN II0ISTS - SAFETY INSPECTION DATA SHEET #1
. ENCLOSURE 13.1 -
.Holst ID No. Capacity
. Manufacturer 11.1.1.1 Braking system - slippage under load ,
- Satisfactory Defective ,
11.1.1.2 Load chain - damaged links Satisfactory Defective 11.1.1.3 Hook - Data Sheet 1 from MP/0/A/7650/03 attached Satisfactory Defective 11.1.1.4 Load bearing parts - general visual inspection Satisfactory Defective 11.1.2.2 Chain and sprockets - operation under load
. Satisfac tory Defective .
11.1.2.3 Viaual inspection of load chain ,
- Satisfactory Defective _ ,
11.1.3 Chain Measurement - Welded Link (Optional) ',
.: . . y
~
' Unworn chain' measurement links = . inches ..' ,
Worn chain ceas.urement sa=c number links = inches Difference = inches
~"
"- -' ~ '
(inche<0 = " . percent ~ ' * ~ '
.. . ...3. ...%. Difference = Unworn Difference chain measurement (inches.) ..
..y.,
.s..... .
Satisfactory Defective .
. . This' ccFI has haan compmd riith
. th: ccatici c:py tad is varificd
- . '.(cCt.
I:iil]l D313 IIG3
~..u* -
Encles:ura KJ.h ..-
. . ! ..* Data Shss t ,
M.K. Ns.
Paga 2 ,.
. . g 11.1.4 Chain Measurement - Roller Link (Optional) .
Nominal pitch - inches -* pitches = 12 inch 2 On worn chain, length of same number of pitches = inches Satisfactory Defective Holst is is not (circle one) suita.ble for continued use
. Inspection perforced by -
Reviewed by Maintenance Supervisor Date s
L i
....a.n.,
\ .
- p. ......a....... . ;.. . . u . .. ., . . . .... . . . .- r.n .; . : , . . : . , . .u-. . , . . . . ..
. . . , :.= , . . . - . . ... .
p' . .
.. - ~ - n..
~ .- .:.=,.. .. < : . , . . .. . . . . : :.w. - .. . . . .
l ..
l ,. . .
.. . ~ . .. . , . . . .
- . ~ . . .. . ...
. .~ . . ... . . . .
- .e. ....-...p-.. . .
- 6. .
l s .
i O $
g O .
I l
- i
. . g I e r . .
M..... _
3
, , n --
DUKE POWER COMPANY
- McCUIRE tiUCLEAR STATION
. CHAIEIil0ISTS - SAFETY INSPECTION DATA SilEET #2 ENCLOSURE 13.2
$5 i2 l
,'- :Tj=
l ca - : c3 Capacity t; "ra f.i jr.:
Hoist ID No. . c.!.
L:. .,,
- g2.~
Manufacturer ,
en fjid 11.2.1.1 Braking system - slippage under load .= : >,.
.- .O. :
Defective c. , ;.j ra Satisfactory ~~
Load chain - daoaged links .
E.j .. i -4 ;
s.* * - " -
Defective Satisfactory E '*2 'l.$
"~ L .4 Hook - Data Sheet Ill from MP/0/A/7650/8 attached Satisfactory Defective Load bearing parts - general visual inspection Satisfactory Defective 11.2.1.2 controls and operating mechanisms Satisfactory Defective 11.2.1.3 Safety devices - limit switches Satisfactory Defective 11.2.1.4 Air system (if required)
Satisfactory Defective ,
( .
11.2.2.% Load brake and motor - excessive wear Satisfactory Defective I 11.2.2.3 Electrical apparatus -
" ~- - --
l Satisfactory Defective l
11.1.3 Chain Measurement - Welded Link (Optional) links = inches Unworm chain measurement inches worn chain measurement same number links =
Difference = inches 1
Difference (inches) a percent n
% difference = - Unworn chain measurement (inc.cs)
Satisfactory _ Defective
. .._w f
Per,9 2 11.1.4 Chain Hessurement - Roller Link (Optional)
Nominal pitch = inches + pitches = 12 inches inches On vorn chain, length of same number of pitches =
Satisfactory Defective ,
Holst is is not (circle one)' suitable for continued use Inspection performed by Reviewed By Maintenance Supervisor Date g
8 e 9 e
O e
9 9
9 t
as e ee e$g 3 p-M
$ et e
5 9
4 e,
8 4
W e. as ^
- - . - - - .. . . . . . ,