Any ideas

  Any ideas as to why a accumulator on the suction side of a pump would blow off the top half shearing 48 1/2" hardened  bolts off in the process. It happened while wireline was equalizing in preparation to making a run down the hole.

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2z248p19vqnh9Permalink Reply by 2z248p19vqnh9 on May 11, 2013 at 4:54pm

WELL put...then enjoy this instead...James Burke Connections II #3 - Getting it Together - YouTube Hope the T&D references help.

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WELL said...

Permalink Reply by p umpjack on May 21, 2013 at 2:56pm

could have been low sodium soy sauce.....

2z248p19vqnh9Permalink Reply by 2z248p19vqnh9 on May 13, 2013 at 4:58pm

*Found it, Jim* - you're correct - it wasn't grayson (could he even expess anything like what *Jack Straw said, for that matter?)...

Have any groups considered drilling your own well? - Go Marcellus &...

...in this discussion...*Jack Straw - March 25, 2013 @ 9:17pm...fyi...interesting re-reading it through...

--------------------------------

as one light lights another, nor grows less - so nobleness enkindless nobleness - imho...

maybe I should just shorten that 'imho' to 'imo' because i don't think the word 'humble' quite suits me - do you? nah....

James Burke Connections #10 - Yesterday, Tomorrow and You - YouTube

Permalink Reply by TH on May 10, 2013 at 6:44pm

What is the Dia. of the Accumulator? What is the normal operating pressure? Have the 1/2 " bolts been replaced with US made Grade 8  bolts?

Most of bolts come in from China and are marked as Grade 8 but are not up to Spec. Have the bolts checked. China's bolts a marked the same as US made Grade 8 but are less than a US Grade 6. China has been flooding the US market for years with cheap under spec. bolts.

Permalink Reply by Joseph-Ohio on May 11, 2013 at 12:26am
Grade 6 - Grade 8 - still 48 of them
failing / 'blowing' the top off of a
suction side piece of equipment leads
me to envision a sudden / explosive
overpressure event.

Just my perception.

Was anyone there when it happened -
any who witnessed it occurring - any
injured ?
Permalink Reply by Billy Park Whyde on May 11, 2013 at 1:48am

 This was the second time it happened, I was not present when the first one had blown in both cases no one was injured. Third time is a charm they say? 

  I thought some one would know right off hand without going into a lot of detail. So here is more. We just finished the stage and wire line was starting to proceed to go down the hole, radio traffic reported wireline as equalizing and someone called out a 2000 PSI pressure,  another called out something is wrong I have  different pressures rather excitedly , next another said something blew, next another I saw it station 6 or 7, another anyone hurt. 

    I can not fathom the accumulator blowing on the suction side of the pump as the suction side is low pressure intake. I have to believe that someone had shut off the inlet suction valve before the accumulator but had not shut off the HP discharge side of the pump, my guess is that both manifold valves to that station were open and the manifold had pressure on it causing a flow back through the HP side of the pump into the accumulator. My guess 

  The bolt theory however is interesting though as I had asked a employee one day about bolts (mixed bolts were collectively thrown in a drawer as our bolt supply, standard bolts, metric, grade 5, grade 8 even sheet metal screws)  and he thought he was using brass bolts to put together a item when he was in fact using Grade 5 colored bolts,  you can well imagine torque and torque sequence was not know buy this employee as well. I saw RED FLAGS and suggested to a management supervisor that perhaps a general mechanic introduction should be part of orientation but it never happened. 

  The bolts here were factory bolts as I searched and found about eight of them as I knew the bolts could be tested for failure.

2z248p19vqnh9Permalink Reply by 2z248p19vqnh9 on May 11, 2013 at 4:20pm

Billy PW - Meadville, Pa. has a MULTIPLE 'Tool & Die' companies available to you - IF you're needing information that can help you out. *EXTREME T/D concentration!

YOU all would need to seek out whom to contact in analyzing WHAT exactly potentially happened with those bolts. Good place to start...things for ALL industries are made from this 'Tool & Die Capital' of the World. Good Luck - Ask on various Crawford Co., Pa. posts...there'll be someone who IS or KNOWS someone in the T/D there who call point you in the right direction. That's all I have to offer.

Glad no one was hurt. I'll add one more CRAZY thought for 'the industry'...in 'The Power of Habit' by Charles Duhigg...chapter 4 is on AA (Alcoa) and how in 87', when O'Neill took the helm - his focus for 'company turnaround' was 'worker safety'...I won't spoil the tale for you, but when you find the time -READ IT (ALL of you...may help to SAVE A LIFE someday, maybe even yours...). Be wise.

2z248p19vqnh9Permalink Reply by 2z248p19vqnh9 on May 11, 2013 at 6:15pm

Correction - that was PA T&D...HERE is a list of Meadville, Pa. T&D: Meadville Tool die makers | Tool die makers in Meadville, PA - YP.com

Permalink Reply by p umpjack on May 11, 2013 at 4:29pm

ask the duxter...I am sure his soy sauce will fix this he will soon troll this thread

2z248p19vqnh9Permalink Reply by 2z248p19vqnh9 on May 11, 2013 at 6:39pm

Man, you really NOT making any sense here for yourselves with that comment about 'bold Grades'...THAT CAN 'make all the difference - for YOU and your co-workers.

I'll bet that the 'Chinese bolts' LACK not only in the 'grade standard', but ALSO *HOW the bolts are 'cured'. Don't know that much about 'nuts & bolts', BUT enough to know that it CAN (and someday regretfully may...) lead to an accident leading to SOMEONE'S DEATH. NO ONE wants that to happen to anyone.

IF anyone could possibly give some possible 'answers' to these 'bolt problems' - I'd probably contact these people first. Peters Heat Treat Inc.-Precision Part Specialists

I don't know them, but I know enough (a little bit anyway...) of the T&D group to know that this would be a good 'first step' in getting this tested possibly.

Chinese Dreams...while you're at it read The Economist, May 4th - 10th, 2013 issue & READ...you'll enjoy the 'Pork, chopped' (p. 29), 'Unburnable Fuel' (p.68), & above all...the 'cover' stories. Tally-Ho. Chinese Dreams, American Hot Air...where will we go from here? follow the yellow brick road.... I've got it - American Screams! (roller coasters, that is!)....

Permalink Reply by Brian Powers on May 11, 2013 at 1:45am

BPW-

Have you considered a different pump type, such as an air actuated one, to fill and hydrotest your lubricator? Or, can you connect a simple equalizing line from a flow-tee below your lubricator to a valve in it to shorten the process?

 

Hydro-test is one thing, equalization is quite another. Running braided as opposed to slick wireline introduces further complications

 

Brian

Permalink Reply by Billy Park Whyde on May 11, 2013 at 2:29am

The pumps are Gardner Denver. We always do a HP test prior to going into a stage but the suction side of a pump should never have a HP on it as the blender is incapable of producing HP and one should never see HP on the low side. Wow was just thinking 2000 PSI on 4" rubber hoses would create a lot of blimps real quick until all H broke loose.

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