Rupture Discs in Nuclear Power Plants Kar 2019 ...

RUPTURE DISCS

IN NUCLEAR

POWER PLANTS

Beijing, 19th June 2019

December 2017

Seite / Page 2Orhan Karagoez

AGENDA

1. Introduction

2. Requirements for rupture discs

3. Process – from enquiry to delivery

4. Applications

5. Example system description

December 2017


RUPTURE DISCS FOR PROCESS

PRESSURE PROTECTION IN

NUCLEAR POWER PLANTS

Dipl.-Ing. Orhan Karagoez

Business Development DirectorREMBE® GmbH Safety + [email protected]

Active Member of:ISO TC185 Pressure Relief Devices

CEN TC 69 WG10 SG2 / SG 3 Bursting Disc Devices

Bursting Disc Devices in Combination with Safety Relief

Valves

DIERS Design Institute for Emergency Relief Systems

December 2017


We are…

… located in Brilon, Germany

GERMANYGERMANYBrilonBrilon

December 2017


COMPANYHeadquarter Gallbergweg 21, Brilon, Germany

Process Safety and Explosion Protection,

45+ Years of Manufacturing in Germany

Satellites and representatives around the globe

High Quality Standards: (ISO 9001, ISO TS 29001, ASME Sec. VIII, PED, ATEX, KTA 1401, CML, KOSHA, GL, GOST, Gospromnadzor, CSA, etc.)

Innovative, fast-decision making, high level of flexibility

Customer specific solutions

Active participation in global standardising committees

An independent, medium-sized, owner-operated company with

250+ Employees worldwide

2018: 45 Million USD Sales

December 2017


SALES NETWORK

December 2017


SERVICE

PRODUCTS

ENGINEERING

CONSULTING

REMBE® CONSULTING. ENGINEERING. PRODUCTS. SERVICE

The concept

December 2017


REQUIREMENTS

ON

RUPTURE DISCS

December 2017


DEFINITION OF RUPTURE (BURSTING) DISC

EN ISO 4126: A Rupture (bursting) disc device is a non-reclosing pressure relief device used to protect equipment such as pressure vessels, piping, gas cylinders or other enclosures from excessive pressure and/or excessive vacuum. Rupture discs are backpressure sensitive fast acting relief devices.

ASME Sec. VIII / API 520 Part 1:Rupture disc device is a non-reclosing pressure relief device activated by static differential pressure between the inlet andoutlet of the device. The RD is used to protect vessels, piping andother pressure containing components from excessive pressureand/or vacuum.

Rupture discs are used in single and multiple relief deviceinstallations. They are also used as redundant pressure reliefdevices.

December 2017


DEFINITION OF RUPTURE (BURSTING) DISC

Typical non-fragmenting full bore relief design

December 2017


REQUIREMENTS ON RUPTURE DISCS

• certifications specific for application- e.g. according to ASME, KTA 1401, PED

• high leak tightness- extensive leak testing

• long service life- design service life 40 years

• quality and consistency- of materials and manufacturing

• exact specifications- such as on certain material composition or specific certificates

General requirements

December 2017


FEATURES OF RUPTURE DISCS

• Passive device

• Quick acting- opening time in the range of 3 – 5 ms

• Instantenous full bore relief- high discharge capacity

• Maintenance free- No moving parts

• Light weight and compact- needs less space and piping support

December 2017


PROCESS –

FROM ENQUIRY

TO DELIVERY

December 2017


PROCESS – FROM ENQUIRY TO DELIVERY

Special customized product solution require:

• Customer specifications and input

• Varification of the specifications by REMBE®

• Mutual understanding regarding the requirements

• Procurement of the corresponding materials with the specialrequirements

General process

December 2017


PROCESS – FROM INQUIRY TO DELIVERY

• 80% to 90% of whole process refers to test reports anddocumentation

• 10% to 20% are on production of rupture discs

• High level of QM/QS and documentation- Inspection Test Plan which inlcudes 3rd Party inspections (TÜV orcountry specific), temperature tests, leak test, hydro test, NDE,…

• Country specific legislative requirements

General process

December 2017


APPLICATIONS

December 2017


APPLICATIONS

Typical application areas of rupture discs in the NPPs:

containment filters ventilation systems pipelines coolant systems discharge sytems condensers

Rupture discs in process

http://www.rwe.com/web/cms/mediablob/de/454732/data/3/blob.jpg

December 2017


APPLICATIONS

Example:

Containment filters

The preferred option is to keep containment intact without venting.However, filtered containment venting is considered a final option preferable to uncontrolled leakage or failure of containment if pressure within containment rises above the design pressure (MAWP).

Filtered Containment Depressurization

December 2017


APPLICATIONS: KTA Commitee Advice

As a consequence of recent major incidents the KTA Commitee advisesadditional measures. One of such measures, which became a regulatoryrequirement in Germany is safe Filtered Containment Venting

Safe and controlled pressure relief from reactor containment to the atmosphere must be implemented so that containment integrity can be maintained, if pressure builds up in containment during a severe accident. Filtered containment venting system is used to perform such a containment venting effectively while minimizing the radioactivity released into the environment.

Filtered Containment Depressurization

http://www.rwe.com/web/cms/mediablob/de/454732/data/3/blob.jpg

December 2017


Case Study

• During pressure relief, which is implemented to prevent the loss of integrity ofcontainment, aerosols and iodine and contained in the gas flow will be retainedby Dry Filter or Scrubber+Filter combination with very high level ofdecontamination factors

• Radioactive aerosols, elemental and organic iodine are reduced to an extent aslow as possible to minimize releases of activity to environment

Filtered Containment Depressurization – general concept

Vent Stack

Outlet IsolationValve

Safety Valve

Filtering

Containment

December 2017


Case Study

Typical location of Rupture discs in a FCVS – passive device

• Inside the containment• In a secondary line for a passive filter activation (in case of valve failure)• On the filter outlet

Depending on the system design, a single rupture disc or a combination of two or more rupture discsare used.Typical sizes are DN 250 to DN 600, while burst pressures are considerably low.

Filtered Containment Depressurization – with RD

December 2017


Case Study Filtered Containment Depressurization- with RD

Example:

A new design of an organic iodine filter using 2 rupture discs, which was developed after the Fukushima Dai-ichi incident.

Figure: Basic system configuration of the filtered containment venting system with iodine filters Kawamura, Shinichi & KIMURA, Takeo & Watanabe, Fumitoshi & HIRAO, Kazuki & Narabayashi, Tadashi. (2016).

December 2017


Case StudyFiltered Containment Depressurization

REMBE® Solutions

ODV-HL – Triple Section Forward acting rupture disc

• Manufactured by lasers – high level of precision• Exact burst pressures at low burst pressures• Leak tight• Suitable for full vacuum and back pressures due to integrated vacuum support

December 2017


APPLICATIONSFurther protective measures

Further examples of Rupture dics used:

• Condensers, Air cooled or Vacuum Triple Section Forward Acting, BT-ODV-(F)

• Pressure Equalization Ceiling Special design Two-Way Acting Discs, round and rectangular

• The containment filtration EUF-System, nitrogen blanketed: Metallic IG-UKB-LS type discs, from 2 up to 28 inch

• Dicharge Collection / Pressurizer Relief Tank BT-ODV-HL or STAR discs 12 to 28 inch

December 2017


ZWBi-directional (Two Way) Disc

ODV(-HL), STARTriple Section Bursting Disc

APPLICATIONS

• Non-standard • Customized discs and special designs• Reliable and performance proven REMBE® solutions and technology

Preferred rupture discs

UKB-LSReverse Acting Discs

Gallbergweg 2159929 Brilon, Germany

T +49 2961 7405-0F +49 2961 50714

[email protected]

www.rembe.de

THANK YOU

FOR YOUR

ATTENTION!

Date post:	20-Mar-2022
Category:	Documents
Upload:	others
View:	2 times
Download:	0 times

Rupture Discs in Nuclear Power Plants Kar 2019 ...

Documents