Document X2zrJQaMpVvVp8w2OxbkdEDK
CHEMICALS
TO FROM
INDUS"R;
VCSA File B. D. Reynolds
INTEROFFICE LAKE CHARLES
DATE SUBJECT
May 22, 1985
Vinyl Chloride Safety Association
The 1983 meeting of the Vinyl Chloride Safety Association was held in New Orleans on October 20 and 21, 1983. Bob Byars, Lamar White, and Ben Reynolds attended from PPG, Lake Charles. Topics of discussion included old and current case histories, safety equipment and program, health and environmental, and regulatory issues. The following is a summary of those items most applicable to us.
1) Thompson Chemical Explosion - J, Barr, Air Products
This incident, which occurred on June 12, 1964, was one of the incidents which led to the formation of the VCSA. There were 7 fatalities, 22 injuries, and the plant was closed down. A Pfaudler-type sight glass (plain piece of tempered glass) was being used on the reactor. A leak was found on the sight glass while the reactor was in operation. When an attempt was made to tighten the sight glass, the glass broke emptying the contents of the reactor. The explosion/fire destroyed several buildings. Contributing factors leading to the incident were:
1) No hydrotest had been done on the reactor, 2) The type of sight glass used, and 3) Working on the equipment while the reactor was on-line.
Other problems encountered during the incident included: 1) the plant was located too close to a school, 2) crowd control was very poor, and 3) construction of the building hampered firefighting efforts.
A survey of PVC producers at the meeting revealed that most do not use sight glasses on their reactors, and all use a hydrotest or N test prior to restoring to service.
2) Hooker-Burlington - Joe King, Occidental
The incident occurred in 1968 at the start-up of the first bulk VCM process (French dry process) in the U.S. The plant had been on-line 3 weeks. French engineers had been assisting in start-up but had left the plant for a weekend in New York City. A VCM release occurred as the second batch (since start-up) was being transferred from the pre-po (pre-polymerizer) to the po-po (post-polymerizer). As the operator activated the remote operated transfer valve, he saw a flash. The deluge system was immediately dumped. The lower 4" flange on the valve was found to be leaking and on fire. The cause of the leak was later found to be the asbestos gasket (tongue and groove joint) was not fitted properly. The valve had been
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removed after the first batch to repair a damaged seat. When the valve was reinstalled, it was tested on only one side, i. e. the valve was closed. The source of ignition was not identified.
The firefighting effort was worthy of note. The plant had a 400,000 gallon water tank which was almost empty after only 2 hours of firefighting. They had to resort to 15 minute cycles of fire water pumps off/on. The tank was made up by two 100 GPM wells, and the fire water pumps were two 6000 GPM pumps. Fire hoses were strung from a gypsum plant next door and from the Delaware River a mile away. Over 20,000' of hose was used. Over 100 firefighters from 9 townships assisted. They also built a dam to catch the fire water run-off so the water could be reused. The French engineers finally returned to the plant after the fire had burned for 13 hours. They could not be found in New York. By putting N,, on the vessels and using C0,, extinguishers, they put the fire out in 2 hours. Damage was estimated at $200,000 and downtime was 4-6 weeks. Probably 20,000 lbs. of VCM was involved in the fire. The insurance carrier required the plant to install a larger water tank, develop proper pressure testing procedures, and develop contingency plans and a fire brigade.
3) Goodyear-Plaquemine - D. Langlois, BFG
This incident occurred in 1972 in a plant using the same PVC process as in the previous incident. Three minutes after operating pressure of 128// was reached, the dome of the poly vessel blew off releasing 19,000# of VCM. The vinyl ignited and burned for 3 hours. There were 3 serious burn injuries - 75% of their bodies were 2 and 3 burns. There was significant damage to piping and electrical but no structural damage. The 30" diameter dome was held in place by a locking ring. They went to a lugged locking ring design with a wedge and proximity switch installed so the reactor can't be charged unless the lid is properly aligned.
The Nissan representative reported a similar failure during a pressure test in one of their plants. They went to a different manway design.
4) Update on BFG Sphere Release - (reported last year) H. Waltemate, BFG
Almost 750 T of VCM were released when an air operated valve came open as some piping was being removed from the bottom of the sphere, A safety audit team was formed and hardware standards were developed for VCM storage vessels. A copy of the revised standards is attached. The maintenance work order procedure was also revised. A copy is attached.
5) Formosa Plastics Fire - J. Fields
The incident occurred on July 30, 1983 during a tank car loading operation. Loading had been completed on 2 cars, but the loading hoses could not be cleared with nitrogen into the cars because of low N^ pressure. The loader sampled the cars and went to the lab. A second loader was at the rack when
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the incident occurred, but he was seriously burned (over 60% of his body, 2/3) and Formosa officials have been unable to determine from him what happened. They feel that the loader either disconnected a hose or the hose blew off. The VCM Ignited almost immediately. The ignition source is not known, but could possibly have been a nonintrinsically-safe radio the loader was carrying. The first car emptied in several hours. The flames from the open loading connection on the first car resulted in a blow torch effect, impinging on the second car. The safety opened on the second car and did not reseat. The flame impingement also resulted in weakening of the shell on the second car, causing several holes/splits to develop in the tank wall. The second car burned for 6 days. The car was hot-tapped on the fourth day, but attempts to pump out the remaining 13,000 gallons of VCM failed. They finally drained the car to a container in an open ditch and had a controlled burn until the car was emptied (done with the permission of DNR). Monitoring detected no increase in contaminants during the burn.
The investigation revealed that the excess flow checks in the tank car valves had not been fully screwed down. This prevented them from operating.
Corrective Action
1. Cam-lock connections were replace with hammer unions.
2. Check valves were installed in the loading piping.
3. Emergency shut-off valves were installed.
4. Procedures were updated.
5. Loading hoses are now hydrotested every 6 months.
Note:
A report on the incident by the Hazardous Materials Unit of the Louisiana State Police is also available.
6) High Pressure Water Cleaning Fatality - J. King, Occidental
In September, 1983, a 45 year old maintenance employee was killed as he was hydroblasting a horizontal heat exchanger. In the past, these exchangers had been drilled out. In the 1970's, Occidental made the transition to hydroblasting, using outside contractors. Because of pressure from the union, maintenance took over the job in 1981. Prior to this incident, there had been no serious problems during the cleaning operation. The equipment being used consisted of a hydroblast rig developing 4200 psi at
the nozzle, 18' of stainless flex hose (V), and a dead man foot switch.
The nozzle was drilled with 1 hole forward and 6 holes backward to provide a forward motion. As the employee started on the 8th tube, his helper noticed him jump, grab his throat, and then fall to the floor. The flex hose had kicked back from a plugged tube, entered the man's chest at his collarbone and travelled 16" into his chest. All attempts at CPR failed, and the man was pronounced dead less than one hour later. The cause of
death was respiratory failure due to a torn esophagus and a lacerated lung.
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Corrective Action
1. Occidental is no longer doing their own hydroblasting. They may consider going back to doing it at a later date. They are investigating improvements in procedure, such as drilling out the tubes to a certain depth before hydroblasting,
2. They are performing job training analyses.
3. They are working with the German company which supplied the hydroblasting equipment to improve the safety aspect of the job -- considering anchoring the flex hose to the exchanger.
7) Resin Transport Trailer - J. Wallace, Esso - Canada
This incident illustrates the consequences of improper repair procedures. A trailer (1800 ft3) loaded with PVC suspension resin split apart as it was being unloaded. The trailer was equipped with 2 SRVs set at 15 psig. The unloading blower was capable of a peak pressure of 22 psig. The unloading line was plugging and the operator saw the pressure rise to 14 psi before the trailer came apart. It was later determined that the tank had been in an accident and had rolled over. It was rewelded, but the seam weld that failed had little penetration.
8) VCM Line Failure - J. Wallace, Esso - Canada
A leak was found at a flange on a 2" 304 SS line in recovered VCM service. The leak had been detected by the air monitor. When maintenance started to work on the line, the flange/pipe weld collapsed. It was determined that the contractor had Installed a monel flange instead of stainless and galvanic corrosion had developed.
Esso has since gone to more stringent material checks.
9) OHC Explosion - B. Reynolds, PPG
The 1977 explosion was reviewed. A copy of the presentation is in B, Reynolds' VCSA file.
10) VCM Pump Failure - L. White, PPG
The May, 1983 frame adapter failure was reviewed. Since the meeting, we have been contacted by others who have had the same problem. Dow - Freeport is suspect of all of their pumps. They are considering replacing the frame adapters on the pumps in their storage areas as we are doing. Shintech had a failure very similar to ours. A cast iron frame adapter sheared completely at the bowl.
11) Conoco VCM Tank Car Derailment - D. Ashby, Conoco
The April, 1982 derailment in Pittsburgh, Texas was reviewed. Five VCM
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cars were involved. Ashby was notified that there had been a derailment of VCM cars and that some leakage had occurred. By the time he reached the site some 5 hours later, he found that one car had been punctured and was empty. This car was punctured by a flat car which was the third car back and jumped over the other cars. The couplers on the VCM cars worked as intended. Two others were laying in a creek and VCM was bubbling into the water. The president of the railroad took charge of the site. Major considerations were for the environment and some cows downstream of the wreck. Water samples from the creek showed 3% VCM 50 ft. downstream of the cars (this is higher than solubility of VCM in H^O!) and 10-20 ppm 150 ft. downstream. They had no air monitor other than an L.E.L. meter. They considered detonation and burning but finally decided to vent the cars under water. Of the 800,000 lbs. of VCM involved in the wreck, 500,000 lbs. were saved and 300,000 lbs. were lost. The government representative took no air or water samples and made no recommendations. There was very little media coverage.
12) Solvay Tank Car Rupture
This incident occurred in Austria in April, 1983. A VCM car was loaded in Germany and was bound for a PVC plant in Italy. It was stopped by Italian customs at the border. Someone decided to unload the car in Austria (the plant did not know why). There was no paperwork on the car, and it was not cleared by customs for Austria. It was left on the principal tracks in the middle of the plant, 300 m. from a PVC unit and 100 m. from the powerhouse. The tank car split open releasing a jet of VCM. An electrician saw the vapor cloud and tripped the alarm system. Everything was shut down. The firemen arrived 10 minutes later. The split was found to be 150 cm. long by 20 cm. wide. There was no fire. The car was sprayed with water. VCM levels outside the plant were less than 10 ppm. Levels of 1000-2000 ppm were seen inside the plant, but this was some time after the initial release. One person was overcome by VCM vapors.
The investigation revealed:
The car had been overfilled due to a math error. Twenty cars were filled with 40,100 kg VCM. This car had been loaded with 45,100 kg. A series of human failures led to the incident.
1) Math error.
2) Loader did not check ticket.
3) Cars were supposed to be weighed twice, but scale had been out-of-service since 1977.
4) German railway did not pick up overload.
5) German/Austrian customs did not pick up overload.
VCSA File Page 6
6) Italian customs did not tell the plant where the car had gone. It was Easter holiday and they waited until Tuesday, the day of the incident.
7) The Italian customs did not advise that the car was overloaded.
There was no SRVs on the tank car. They do not protect their cars with SRVs.
13) Angio Sarcoma Update - through April, 1983, J. Barr - Air Products
Country
Fatalities
U.S. West Germany France Canada U.K. Sweden Yugoslavia Italy Czechoslavakia Japan Norway Belgium
Total
31 21 14 10
8 5 4 3 2 2 1 1 102
Two still alive in U.S; no reports from Iron Curtain.
.14) Safety/VCM Monitoring Equipment - Mike Nevill, Dow
Area Monitoring - Beckman 6700 and 6710, 4-10 stream analyzers. Calibrated a 5 ppm, span - 25 ppm, 50 min. cycle time. They are spanned daily and given full calibration weekly. They use NBS standard in N^. Action level is 5 ppm.
Leak Patrol - Use HNU, leak is defined as 10 ppm at 6". The operators calibrate HNU - (Others defined leak as 10 ppm at 1' or 25 ppm at 6".) They have seen some interference of HNU with NH^.
Personnel Monitoring - Dow uses DuPont pumps. Borden does each employee once/month. Several companies reported using badge type monitors (3M). They claimed good accuracy and repeatability for 8 hour samples. Nineteen companies were using pumps; 11 were using badges.
15) Plant Evacuation Planning and Training - Mike Jones, BFG-Convent
They have a drill twice/year. They test fire alarms daily and C^ alarm weekly. They have plant plot plans with vessel capacities, etc. for use in emergencies.
Dow reported using employees to imitate the press.
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16) Livingston Train Derailment - Capt. W. Poe, La. State Police Captain Poe gave a very good account of the incident. We have a copy of the video-tape documentary of the incident and a training film for emergency response.
/vem Attachment
SA - 132
EStT:--rursm
BFGOODRICH CHEMICAL GROUP
SAFETY STANDARD
Hazardous Material Storage Tank Standard
Vinyl Chloride Storage Tanks (Non-Process)
Tank Valves and Nozzles
I. All tank nozzles must have one of the following:
1. If Not In Use - Blank on the tank nozzle flange.
2. Vapor Service Nozzles - Ball valve mounted on tank nozzle flange. Valves in conjunction with relief valves will be covered in the relief valve section.
3. Liquid Service Nozzles (usually on bottom of tank, but would also Include top entering dip pipes) - Remote air actuated ball valve mounted on tank nozzle flange. The following exceptions apply:
(a) Tank nozzles with thermowells. Thermowells must be welded to the tank flange.
(b) A manually operated ball valve that meets criteria in Appendix I, mounted between the tank
nozzle flange and the air actuated ball valve is optional.
(c) Fill lines into the VCM spheres at the VCM plants. These lines require a check valve that is inspected annually and an air actuated valve that Is activated only by a remote air switch.
Air actuators must include the following features:
(a) Air to open, spring to close. (b) Contain section of burn-through tubing. 3
)
(c) V
,
: actuators mounted on them, bench
tested for leaks before installed on tank and
during vessel turnaround.
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SA - 132 EStF---IT7T5752
4. All tank nozzles must be a minimum of 1-1/2" pipe size.
5. No threaded connections should be attached to the tank.
II. Valve requirements for Section I and a list of valves that meet these requirements are in Appendix I.
III.
Air actuated valves are required to have two local and one remote manual air switch. The two local air switches will be 180 apart and located just outside the tank contain ment system. A LEL vapor detector, discussed later, will also operate these valves.
IV. It is required that all air actuated valves be cycled every two weeks.
V. Excess flow valves may be used in conjunction with air actuated valves.
Vapor Detectors
I. LEL type vapor monitor with continuous sampling that alarms at a maximum of 25% and closes air valves and activates deluge system at 50% are required.
II. Three LEL detectors will be located below tank and one at pump. It is not required that the LEL detector at the pump activate the deluge system.
III. Vapor detectors should be tested and calibrated every four months.
Fire Protection
I. An automatic deluge fire water system is required for each tank.
II. Vessel supports need either a deluge system or fire proofing with a 3 HR rating.
Relief Valves
I. One of the following two, (a) or (b), may be used for vessel pressure relieving systems:
(a) A three-way valve with two relief valves.
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SA - 132 Cate:--11/15/82
(b) Two-way valves, multi-nozzle with "Castell"
locking system.
L\^
sy3 7VW\
See Appendix II for relief valve design and installation requirements.
II. Manual valves below relief valves must be mounted on tank nozzle flange. Valves for this service must meet the requirements in Appendix I.
III. Each relief valve will be bench tested every three years.
IV. Rupture discs will continue to be used per the EPA Regulations.
V. Sizing of relief valves must adhere to BFG Policy ST-1317.
Tank Internal Inspection
I. Storage tanks will be inspected a minimum of once in five years; tanks in rework VCM service every two years.
II. The minimum inspection requirements are:
(a) Visually inspect for internal corrosion, especially around flange welds, thermowells, level indicators, etc.
(b) Ultrasonically test wall thickness in several representative locations.
(c) Record results of each inspection and thickness measurement and compare with previous inspections.
III. Connecting piping will be inspected at the same time tank is inspected.
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ADDENDUM
HAZARDOUS MATERIALS STORAGE TANKS SAFETY STANDARD SA-132
To be used for existing installations and specific applications only.
(1) Existing high performance butterfly valves, manufactured by Posi-Seal, may be used in vinyl chloride service at Calvert City in place of the ball valves required by the standard. When these valves are replaced, however, they must conform to the standard. (11/15/82)
(2) Existing six inch pipe elbows may remain between the tank nozzle flange and the air actuated valve on the butadiene tanks at Port Neches. These elbows must be inspected every year, however. (11/15/82)
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st> 91lS
SA - 130
Date: 8/10/82
BFGOODRICH CHEMICAL GROUP SAFETY STANDARD
MAINTENANCE WORK ORDER STANDARD
Purpose
The objeotlve of this standard is to eliminate personnel injuries, ch mical spills, chemical exposures, and equipment damage which may result as a consequence of maintenance work being performed by p rsons who are not always familiar with the particular equipment or facility and the inherent related hazards.
D finltion
Maintenance Work -
is any activity to install, adjust, repair, test, inspect, remove or re-install workplace equipment or facilities, wh n performed by persons not directly responsible for the operation of such equipment or facilities.
Maintenance Work Order -
A permit which is used to define in written form:
(a) A description of the maintenance work. (b) Safety related information. (c) Authorization for the maintenance work to begin. (d) Acknowledgement of work completion.
Procedure
Each plant/facility shall prepare and maintain a written procedure for authorizing maintenance work. This procedure must require the fo 1 lowing :
I. The transaction of releasing equipment involving hazardous chemicals to maintenance personnel must occur at the equipment site. The fo'reman/operator who authorizes the maintenance work to commence in his area must release the equipment in the presence of the craftsman.
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II. The foreman/operator who signs the Maintenance Work Order, ^authorising the work to begin, must determine that:
(a) The craftsman is working on the correct piece of equipment.
(b) The equipment is safe to work on.
(c) The craftsman has been advised of the potential hazards and any special tools or protective equipment that is required.
(d) The appropriate personnel are aware of the maintenance work that is in progress.
Note: '
Many jobs performed by maintenance craftsmen require the following additional procedures: hot work* vessel entry, lockout and others required by the specific plant. It is the responsibility of the maintenance craftsman that these procedures are followed. However, the production foreman and the maintenance foreman must be held accountable.
III.
The maintenance foreman will assign a craftsman to a job
after determining that the necessary preparations have been made and will give him a copy of the maintenance work order. Communication with the production or operating area is required to determine whether equipment or systems have been made ready for maintenance.
The maintenance foreman must make certain that the work order accurately describes the work to be performed.
IV. The production foreman/operator releases the equipment to the craftsman by describing in written form, how the equipment has been safed-out and signing his name. The date and shift must also be included.
This signature assures the maintenance craftsman that the equipment lies been auau sefe, the operators have been informed of the work to be performed, and if more than on department uses the equipment, each of the other department operators have been informed. The craftsman must be satisfied that the release is complete and conditions are safe prior to commencing work.
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V The release of equipment is only valid for one shift. The ^craftsman must obtain another signed release whenever ther is a personnel shift change (this includes a personnel shift change by either the craftsman or production or both). The release requirements for subsequent shifts are identical to item #11. The possibility that conditions could change makes this duplication of the release procedure as .important as the original.
When the equipment has the potential for a large chemical spill or release and cannot be drained or isolated by using a blank or locking a block valve# the foreman/operator must be present at the equipment site until the job has been completed by the craftsman.
VI. A Maintenance Work Order is used to authorize maintenance work. It must provide:
(a) A description of the maintenance work to be done.
(b) The location or job site.
(c) The date and estimated duration of the maintenance work.
(d) A section on safety that will accommodate a written description of how the equipment has been safed-out. This should include any permits# safety equipment# or activities that are required for the job to be performed safely.
(e) A signature from the foreman/operator for the releas of the equipment to the craftsman. The craftsman must countersign the foreman/operator's release signature.
(f) A signature from the foreman/operator signifying that the maintenance work has been approved* Before approval is given# however# the maintenance work# housekeeping conditions# and tool/equipment storage must be acceptable. If the maintenance work requirements are satisfactory# then the foreman/operator must sign the MWO# including the date and the time# indicating the acceptance of the work.
(Those plants that use a Hazardous Work Permit or a Permission to Start Work permit m.iy substitute these for the safety requirements of this m.iintenance Work Order Standard).
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VIII.
A system must be stablished for monitoring the release and
approval process for Maintenance Work Orders. This can be 'accomplished by having the person who is responsible for
charging the craftsman's hours verify- the proper . authorisations. Also, routine audits by line management
and staff personnel should be used to monitor the release and approval process.
A thorough investigation must be conducted if a Maintenance Work Order is found without the proper release and approval signatures.
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Si 8S12q
OESCttlBE HOW THE EQUIPMENT HAS SEEN SAPEOOUT.
JOB AUTHORIZATION DESCRIBE HOW THE EQUIPMENT HAS BEEN SAFECH3UT.
i
AUTHORIZATION CRAFTSMAN SIGNATURE DESCRIBE HOW THE EQUIPMENT HAS BEEN SAFED-OUT,
DATE
SHIFT
AUTHORIZATION CRAFTSMAN SIGNATURE OESCRIBE HOW THE EQUIPMENT HAS BEEN SAFED-OUT.
_J|HIFT-
AUTHORIZATION CRAFTSMAN SIGNATURE
............... .................. .................... .... .............. --
trjMWOM NT
DATE
|5HIFT
| AUTHORIZATION
CRAFTSMAN signature
Ht r1 A( K V OH T CUD) s
A1 ALARM
A3 ANALYZER AS armature
St BASE S3 BATTER Y
S3 EARING B4 BILLOWS IS0UR00N>HELICAD
M CLTS M LAOS
i*7 SOLIS (SCREWS. STUDS)
BUSHING Pci CABLE
a CASING
C3 CATALYST C4 CHAIN
C9 CIRCUIT C* CLUTCH
C1 COILS-WEATCA
ct CONDUIT C9 CONTROLLER (STARTER 1
01 oiaphragm 1 elect, supply Pi FAN
F2 FILTER (SCREEN. STRAINER) F3 FLOAT F4 FUSE G1 GASKET
G2 GAGE G3 GEAR HI HOSE
HJ HOUSING OR FRAME (BODY) 11 IMPELLER 12 IMPULSE LINE 13 INSULATION Li LAMP
L2 LEADS
U LINKAGE Ml MAGNETS
M2 METER
M3 MOTOR M4 MOUNTING N1 NOZZLE
01 OIL PI Packing P2 PIPE
P3 PISTON IPLUNGERI P4 POSITIONER PS POWER SUPPLY P6 PROBE P? PUMP (COMPRESSOR) 01 COOLANT
02 COUPLING (FLANGE. JOINT) 03 CUP 04 CYLINDER R1 RECORDER R2 REGULATOR R3 RELAY R4 RELIEF
R5 RING RE ROD
R7 RB RE SI S3 S3 Si SB 36 S7 SB SB T1 T3 T3 - T4 T5
tb
T7 T| T9 VI
V2 V3 W1
XI
X2 X3 X4
xs
Z1
ROLL
roller
ROTQR SEAL-LIP SEAL-MECHANICAL SEAT SHAFT
SHELL SHEAR PIN SHEAVE
sleeve
solenoid
terminal
thermal system
thrust bearing tracing
transformer
TRANSMITTER
trays
TRIM
tubes
VALVE VENT VESSEL WIRING OR WINDINGS
spring
SPROCKET STATOR SUPPORT STRUCTURE SWITCH (BREAKER) TUBING OR FITTING
1 !
bats-- r_
CONOl T ION
----
ACTION
t BENT
3 BROKEN S3 BURNT
Cl CALIB NEEDEO C2 CORRODED 01 DIRTY 11 EMPTY
E2 EROOEO FI failed
F2 - FAULTED
G1 GROUNOCO J1 JAMMED LI leaking
L2 LOOSE L3 LUBE NEEDED Ml MISALIGNED Ml MISAPPLICATION M3 MISSING N1 needed N2 NEW N3 NOISY N4 NOTHING FOUND 01 OFF 02 Overheated PI plugged
Si SHORTED T1 tight
VI VIBRATING W1 WET W2 WORN W3 WRONG SIZE
A1 ADJUSTED
A2 ALIGNED 1 balanced
Cl calibrated
C2 CHECKED (TESTE C3 CLEANCO FI FABRICATED n INSPECTED
12 INSTALLED
Li LOOSENED L2 lubricated Ml machineo
M2 MODIFIED N1 NONE PI PAINTED
P2 pickled P3 PLUGGED P4 PURCHASED R1 REBUILT
R3 REINSULATEO R3 relocated R4 repacked RS REPAINTED R6 replaced R? RESET (STARTED
RS RCWIREO
R9 REWOUND SI STRAIGHTENED T1 TIGHTENED U1 unplugged W1 weloed
-
_j|LOC.| MWO NO. i 2 3 4 B 6 7 8 9 10 11 M4 M
| completed |
COMPLETION SUMMARY / RFPAIR REPORT
MAIN PROBLEM
1
ADDITIONAL PROBLEMS (OPTIONAL) 2 1 3j
i1
5
BY DATE
(IINil\) M 0 DAY YR
um
3
G EM
MB
E30 [19I 20 21 0 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55
Ldu
|
i
!
-1-
_L 1
1 _L_
FURTHER EXPLANATION (OPTIONAL)
_L_ _1_
Ll_
ONOO
I58p
L_L
! ' ! I M 1 M I ' I I ! I
SL 089121
[ CARO REVISED
JUST.CODE COMP. COND. ACTION COMP. CONO. ACTION COMP. COND. ACTION COMP. COND. ACTION COMP. COND. ACTION COMP. ACTION