Energy Sector Thread - Operators, Engineers, Technicians Et Al

[K74T]

PROMAN has confirmed that two workers were injured in an incident at its AUM Ammonia facility at the Point Lisas Industrial Estate on July 1.

In a release, the company said two contract workers from Phoenix Welding and Fabricating Ltd (PWFL) were hurt.

“The PWFL workers were completing an equipment installation task, as part of the AUM Ammonia facility maintenance turnaround, when the incident occurred.”

No details of the event were given.

“Both workers received immediate attention from the facility’s onsite medical team and the best possible tertiary medical care is subsequently being provided.”

Proman added, “The health and safety of our employees and contractors is our utmost priority. A full investigation has been launched to understand the causes of the incident.

“We are liaising closely with PWFL on the management of this incident and will continue to provide our full support and assistance.”

Late Sunday evening, Labour Minister Stephen Mc Clashie told the Newsday he was unaware an incident of this nature had occurred at the plant.

He said the normal procedure is for incidents in which people are injured to be reported immediately to the Occupational Safety and Health Agency (OSHA). He said if the matter had been reported he would have been alerted.

This is the second industrial accident in the past month. On June 15, fire at the NiQuan plant at Pointe-a-Pierre severely injured a Massy Energy employee, Allan Lane Ramkissoon who suffered burns to 60 per cent of his body. He was flown to a specialised burns unit in Colombia, but died on June 18.

Several probes have begun into that incident and the Ministry of Energy has instructed NiQuan to close that part of its plant until its safety can be ascertained. In 2021, an explosion at NiQuan's gas-to-liquids plant led to its closure for almost a year.

https://newsday.co.tt/2023/07/03/proman-confirms-workers-injured-at-its-point-lisas-aum-plant/

[sMASH]

No details.

What was they doing for a spring hanger to buss out....

[eitech]

I believe they were replacing the spring can and the old one was set down to be removed and well potential energy…

[sMASH]

Well, in future, some sort of cage will have to be developed, snd it will be placed in that to contain the potential to kinetic energy conversion.

Me, i would be so antsy dealing with that...

[nervewrecker]

The backlash from these incidents are felt throughout the industry.

Stand down next day and hse biting tack all side. Every little thing becomes an issue except incompetence and disobedience / chance taking. Over time, it dies down and nonsense continues where the idiots are allowed to prevail as there is strength in numbers.

[sMASH]

Yup.. After two weeks it bubbles down

[Alpha_2nr]

Im not an engineer actually.

People have to understand how trinis and news does go. You tell someone you saw the neighbor walking the dog and by next week you hearing how the neighbor sold the dog to the Chinese and got a cat.

It's best to stay quiet about what you see / hear or it can lead to a company ending up with a bad image.

Ok I gotcha. Makes sense on the Corporate reputation (i.e. re: image).

[Richard Coer de Poulet]

can anybody tell me how to test a single phase and 3 phase motor with a megger. I cant seem to understand youtube vids. I get the basic principles where a coil will have a resistance and the direct shorts but the numbers on the motor wires confusing me

[Richard Coer de Poulet]

The backlash from these incidents are felt throughout the industry.

Stand down next day and hse biting tack all side. Every little thing becomes an issue except incompetence and disobedience / chance taking. Over time, it dies down and nonsense continues where the idiots are allowed to prevail as there is strength in numbers.

correct i am training in a school and the stores van buss down the pole and wires to half the school and nobody was held accountable

[ruffneck_12]

can anybody tell me how to test a single phase and 3 phase motor with a megger. I cant seem to understand youtube vids. I get the basic principles where a coil will have a resistance and the direct shorts but the numbers on the motor wires confusing me

You have an example of this?

[Richard Coer de Poulet]

can anybody tell me how to test a single phase and 3 phase motor with a megger. I cant seem to understand youtube vids. I get the basic principles where a coil will have a resistance and the direct shorts but the numbers on the motor wires confusing me

You have an example of this?

so the single phase motor have t5, t1 and t3 to l1 then t8, t2 and t4 to l2 how would i megger this ? using the red and black leads? thanks

[nervewrecker]

First off, whats a megger?

[eitech]

First off, whats a megger?

Lol actually megger is a brand of test equipment used to do IR testing. It common to say “megger” sumthin which means do an IR test on it

[adnj]

can anybody tell me how to test a single phase and 3 phase motor with a megger. I cant seem to understand youtube vids. I get the basic principles where a coil will have a resistance and the direct shorts but the numbers on the motor wires confusing me

You have an example of this?

so the single phase motor have t5, t1 and t3 to l1 then t8, t2 and t4 to l2 how would i megger this ? using the red and black leads? thanks

One lead goes to ground—the other to the winding terminal. Run your test—repeat. Resistance testing doesn't care about polarity.

edit: the megger tests the insulation resistance of the winding.

[nervewrecker]

First off, whats a megger?

Lol actually megger is a brand of test equipment used to do IR testing. It common to say “megger” sumthin which means do an IR test on it

I wanted him to correct himself and identity what the task is.

It's like how they call all hammer drill Hilti and all toothpaste Colgate.

It's an IR test and that's as much as he knows. Let him elaborate and correct himself now and tell us what ir stands for and we will take it from there. No sense in him being in sch and learning the wrong thing.

[Supra GT-FOUR]

First off, whats a megger?

Has the motor ever run with this configuration?
Seems kind of odd to me.
Was this the as found condition (meaning it was found with this connection scheme in a not working state and you are attempting to perform an insulation resistance test "meggering" in an attempt to diagnose whether the motor is good when the connection scheme may be the problem)

Here's how I would tackle the issue.
Firstly look for a nameplate on the motor in the hopes you can get a schematic.
If you can get a schematic it should denote the internal configuration wrt the Tx numbering scheme.

If you can't get one you have to attempt to use your meter to deduce the internal config.

Way I see it is T1 2 3 4 5 8

T1 & T2 (possibly one coil)
T3 & T4 (possibly other coil)
T5 & T8 (possibly capacitor)

You begin by putting your multimeter in resistance measurement mode
1. Ensure device (motor) is unplugged/isolated before interfering with anything

2. Place black lead on T1

3. Place red lead on T2 and look at meter for a resistance value (typically a few ohms 3-10 ohms maybe). If it reads a value as indicated you have identified one coil. If it does not keep black lead on T1 and test between T3, then T1 and T4, T1 and T5, T1 and T8.
Once u get a low resistance it indicates this is a coil.

4.Do same until you identify 2 coils (eg T1 &T2 one coil, T3 & T4 one coil)
That should be 2 pairs of wire .

5. By process of elimination the last pair should be your capacitor.
Measure resistance across last pair (should be high MegOhms or high kilohms) this would indicate possible capacitor which can be confirmed by placing meter in capacitance mode
When meter is in capacitance mode measure across suspected capacitor pair of wires and you should get a microfarad reading.

For a single phase motor to work one coil needs a phase shift this is accomplished by connecting one coil directly across mains and the other in series with the capacitor and mains (creating the phase shift).

How you explained 3 of the "T" connections going to line and another 3 going to neutral to me makes no sense (if it is configured how I assume it to be)

If you confirm via measurement the config is as above. If connected in the scheme below it should work







L1 and L2 are obviously your single phase line input connections.

[sMASH]

NOBODY calls it anything else but megger testing.
Even official procedures use thst term, even if the device is not that brand.


Is like how all detergent is breeze and all milk is klim.



So dont chew out the guy too much.

[nervewrecker]

First off, whats a megger?

Lol actually megger is a brand of test equipment used to do IR testing. It common to say “megger” sumthin which means do an IR test on it

Another term you will hear is "wring".

He should ask his teacher how that one originate.

[nervewrecker]

NOBODY calls it anything else but megger testing.
Even official procedures use thst term, even if the device is not that brand.


Is like how all detergent is breeze and all milk is klim.



So dont chew out the guy too much.

Leaves room for people wasting time doing foolishness if they don't know what they doing.

Megger this and Megger that and nobody knows what is the purpose of an insulation resistance test. Had to have some guys say it slowly.... insulation.... resistance....test....so what you checking? What is the purpose of doing it? Now tell me....wdmc you really doing? Now how can you tell me I talking horse manure because I refuse to do what you want me to do?

[ruffneck_12]

can anybody tell me how to test a single phase and 3 phase motor with a megger. I cant seem to understand youtube vids. I get the basic principles where a coil will have a resistance and the direct shorts but the numbers on the motor wires confusing me

You have an example of this?

so the single phase motor have t5, t1 and t3 to l1 then t8, t2 and t4 to l2 how would i megger this ? using the red and black leads? thanks

Bai you sure that's single phase?

Because


Unless I forgetting that you can connect up a three phase to run single phase without a capacitor or anything extra?
Or if this motor just labelled their unit like that? Meeno.

But anyhow, take note of how everything is connected, then disconnect it and test each coil/winding separately. Polarity wouldn't matter here.

Post the nameplate and coil diagram if there's one available please.

[Richard Coer de Poulet]

can anybody tell me how to test a single phase and 3 phase motor with a megger. I cant seem to understand youtube vids. I get the basic principles where a coil will have a resistance and the direct shorts but the numbers on the motor wires confusing me

You have an example of this?

so the single phase motor have t5, t1 and t3 to l1 then t8, t2 and t4 to l2 how would i megger this ? using the red and black leads? thanks

Bai you sure that's single phase?

Because


Unless I forgetting that you can connect up a three phase to run single phase without a capacitor or anything extra?
Or if this motor just labelled their unit like that? Meeno.

But anyhow, take note of how everything is connected, then disconnect it and test each coil/winding separately. Polarity wouldn't matter here.

Post the nameplate and coil diagram if there's one available please.

Yes its a single phase with a capacitor

[Richard Coer de Poulet]

can anybody tell me how to test a single phase and 3 phase motor with a megger. I cant seem to understand youtube vids. I get the basic principles where a coil will have a resistance and the direct shorts but the numbers on the motor wires confusing me

You have an example of this?

so the single phase motor have t5, t1 and t3 to l1 then t8, t2 and t4 to l2 how would i megger this ? using the red and black leads? thanks

Bai you sure that's single phase?

Because


Unless I forgetting that you can connect up a three phase to run single phase without a capacitor or anything extra?
Or if this motor just labelled their unit like that? Meeno.

But anyhow, take note of how everything is connected, then disconnect it and test each coil/winding separately. Polarity wouldn't matter here.

Post the nameplate and coil diagram if there's one available please.

Yes its a single phase with a capacitor

and this pic is the 3 phase thanks

[Supra GT-FOUR]

The motor is dual voltage
The capacitor is in series with a centrifugal switch. This is the 2 configurations.
Your 2 coils are
T1 & T2 coil 1
T3 & T4 coil 2
T5 & T8 start/run cap in series with centrifugal switch.

If you need to measure insulation resistance
Separate connections

Red lead on T1 while T2 is floating freely
Black lead on bare metal part of motor frame Scrape metal if necessary.
Press insulation test (if using fluke 1587 or 1507)
You are looking for megohm reading.
Ohms means stator coil is shorting to ground.



Red lead on T3 while T4 is floating freely
Black lead on bare metal part of motor frame Scrape metal if necessary
Press insulation test (if using fluke 1587 or 1507)
You are looking for megohm reading.
Ohms means stator coil is shorting to ground.

Put meter in capacitance and check across T5 and T8.
Should be reading microfarad.

[wing]

Explosion at AUM complex approx 8 am. Fire still burning.

[eitech]

Explosion at AUM complex approx 8 am. Fire still burning.

Explosion confirmed?

[wing]

Explosion at AUM complex approx 8 am. Fire still burning.

Explosion confirmed?

Fire for sure, talk of explosion is probably exaggerated. It's already under control and neighbouring plants given all clear by TTEMAS

[Cantmis]

Mel

[eitech]

Mel ah mean one

[nervewrecker]

No comment

[sMASH]

Germs seeing trouble these days