[env-trinity] Fw: [Trinity Releases] Change Order - Lewiston Dam
David Webb
dwebb1 at wildblue.net
Wed May 1 10:38:21 PDT 2019
The power plant I ran had an emergency release valve which generically
was called a hollow cone valve. Properly it was a Howel-Bunger Valve.
I suspect that is what they are talking about. for us it opened
automatically whenever there was a power outage so as to maintain
instream flows, and also as the only mechanism to drain down the lake in
an emergency situation other than through the generators, which by
themselves couldn't release enough water to do the job. Making repairs
to such an item is difficult if it must be available for service at all
times. I have no idea if tht is the case with TR Dam.
Dave
On 5/1/2019 10:08 AM, Rukim1259 at sbcglobal.net wrote:
> What are the “Hallow jet structures”?
>
> Sent from my I-phone
>
> On May 1, 2019, at 9:54 AM, Tom Stokely <tstokely at att.net
> <mailto:tstokely at att.net>> wrote:
>
>> ----- Forwarded Message -----
>> *From:* 'SANDBERG, JEFFERY' via trinity-releases
>> <trinity-releases at googlegroups.com
>> <mailto:trinity-releases at googlegroups.com>>
>> *To:*
>> *Sent:* Wednesday, May 1, 2019, 8:51:11 AM PDT
>> *Subject:* [Trinity Releases] Change Order - Lewiston Dam
>>
>>
>> Project: Lewiston Dam
>>
>> Date Time From (cfs) To (cfs)
>>
>> 4/30/19 18:00 8500 8000
>> 4/30/19 20:00 8000 7500
>> 4/30/19 22:00 7500 7000
>>
>> 5/01/19 00:01 7000 6500
>> 5/01/19 02:00 6500 6000
>> 5/01/19 04:00 6000 5500
>> 5/01/19 06:00 5500 5000
>> 5/01/19 08:00 5000 4500
>> 5/01/19 10:00 4500 4000
>> 5/01/19 12:00 4000 3500
>>
>>
>> Comment: Emergency Reduction in Trinity Flow rates due to signficant
>> oil leak detected in Hollow Jet Value release structures.
>>
>> Issued By. J. Sandber
>> --
>> View online at http://www.trrp.net/restore/flows/release-email/
>> ---
>>
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