We used to add it to improve clarity during split pin projects. It essential acts somewhat like a flocculant. It drives the particles to the bottom of the cavity. We used 30%- several gallons at a time. It was neutralized as 1 gallon of peroxide in a LOT of cavity water turns it into water. After draindown, the tiny particulate can be hosed to the drain. (PWR) After draindown we have used 6-8% in our BWR for drains or the walls. Do NOT allow it to dry and it is so effective that it will go airborne if you let it dry. Neutralize with water. Very effective in drains, but the ‘hot stuff’ you liberate may go somewhere you don’t want it (you must study the downstream path before doing it). Caution: 30% is dangerous and will eat through plastic bags. 6-8% is the same as hair dye. 3% peroxide is in your medicine cabinet. Hope this helps, sue
Sue Ziegler PSEG Nuclear LLC Nuclear Technical Supervisor 856-339-5143 856-378-9425 Gadugi-working together for the good of all [https://www.pseg.com/images/global/email/PSEG_emailsignature_PSEGw-tag_version2.png]<http://www.pseg.com> [http://facebook.com/pseg]<http://www.facebook.com/pseg> [Twitter] <http://www.twitter.com/PSEGnews> [LinkedIn] <http://www.linkedin.com/company/pseg> [https://www.pseg.com/images/global/WP_LOGOgrey.png] <http://energizepseg.com/> PSEGSC From: Powernet [mailto:[email protected]] On Behalf Of Paciello, Lara R via Powernet Sent: Thursday, March 14, 2019 7:54 AM To: [email protected] Cc: Paciello, Lara R Subject: [EXTERNAL] Re: [Powernet] Peroxide add to cavity Email sent from outside of PSEG. Use caution before using links/attachments. Not sure if the concentrations will be the same, but we performed this by adding 5 gallons to the cavity prior to drain down and saw no effect on Decon effort. May not be worth the effort, but also had no negative effects. Dr. Lara Renz Paciello, CHP Radiation Protection – Dosimetry Laboratory Beaver Valley Power Station 724-682-5857 From: Powernet <[email protected]> On Behalf Of Mosty, Shari via Powernet Sent: Wednesday, March 13, 2019 3:32 PM To: [email protected] Cc: Mosty, Shari <[email protected]> Subject: [EXTERNAL] [Powernet] Peroxide add to cavity Comanche Peak will be adding peroxide to our cavity to aid in cavity decon. Our Operations department has concerns that it could create a CRUD BURST or if poured straight into the cavity a clarity issue. Has anyone ever had an issue with either. Thanks Shari Mosty Sr. Health Physicist Comanche Peak Nuclear Power Plant 6322 N. FM 56 Glen Rose, Texas 76043 254.897.5204 [email protected]<mailto:[email protected]> Confidentiality Notice: This email message, including any attachments, contains or may contain confidential information intended only for the addressee. If you are not an intended recipient of this message, be advised that any reading, dissemination, forwarding, printing, copying or other use of this message or its attachments is strictly prohibited. If you have received this message in error, please notify the sender immediately by reply message and delete this email message and any attachments from your system. ________________________________ The information contained in this message is intended only for the personal and confidential use of the recipient(s) named above. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately, and delete the original message. The information contained in this e-mail, including any attachment(s), is intended solely for use by the named addressee(s). If you are not the intended recipient, or a person designated as responsible for delivering such messages to the intended recipient, you are not authorized to disclose, copy, distribute or retain this message, in whole or in part, without written authorization from PSEG. This e-mail may contain proprietary, confidential or privileged information. If you have received this message in error, please notify the sender immediately. This notice is included in all e-mail messages leaving PSEG. Thank you for your cooperation.
_______________________________________________ Powernet mailing list [email protected] http://hpspowernet.org/mailman/listinfo/powernet_hpspowernet.org
