Double block and bleed definition

Double block and bleed means the closure of a line, duct, or pipe by closing and locking or tagging two in-line valves and by opening and locking or tagging a drain or vent valve in the line between the two closed valves.
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Double block and bleed means the closure of adjacent piping by locking out a drain or vent in the open position in the line between 2 locked out valves in the closed position;
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Double block and bleed means the closure of a line, duct or pipe by locking and tagging a drain or vent which is open to the atmosphere in the line between two locked-closed valves.
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Examples of Double block and bleed in a sentence

  • Double block and bleed system means two block valves connected in series with a bleed valve or line that can vent the line between the two block valves.

  • Double block and bleed means the closure of a line, duct, or pipe by closing and locking or tagging two in-line valves and by opening and locking or tagging a drain or vent valve in the line between the two closed valves.

  • COMMENTS FROM THE SUPERINTENDENT- School Choice Expo – The Superintendent reported that the School Choice Expo would be held November 16, 2015 at Washington High School from 6:00 p.m. to 7:30 p.m. It was noted that this annual expo was an opportunity for the School District to showcase its career academies, academic programs, and magnet schools.- November Schedule of Board Workshops/Meetings – The Superintendent reminded School Board Members that it was time to schedule their annual organizational meeting.

  • Double block and bleed valves required for high pressure systems.

  • Blinding should take place at the flange closest to the confined space.• Removing a valve, spool piece or expansion joint as close as possible to the permit space and placing a blank or cap on the open ends.• Double block and bleed by shutting a least two valves in piping leading to the permit space, opening a bleed off path to atmosphere between the shut valves, and/or locking/tagging these valves.

  • Statewide Operation and Affected Medicaid Stakeholders‌The HTP will operate on a statewide basis.

  • Double block and bleed: The closure of a line, duct, or pipe by closing and locking or tagging two in-line valves and by opening and locking or tagging a drain or vent valve in the line between the two closed valves.

  • Double block and bleed means the closure of a line, duct, or pipe by closing and locking or tagging two inline valves and by opening and locking or tagging a drain or vent valve in the line between the two closed valves.

  • In general, where equipment or production system isolation is necessary to conduct hot work, the isolation will consist of one or a combination of the following: • Physical disconnection.• Installation of blinds.• Double block and bleed valves.

  • This form of isolation should only be used when it can be assured that the pressure will not exceed atmospheric.• Double block and bleed is an acceptable method of isolation, however, it is recommended that more positive forms of isolation be used whenever possible.


More Definitions of Double block and bleed

Double block and bleed means the closure of a line, duct, or pipe by closing and locking or tagging two in-line valves and by opening and locking or tagging a drain or vent valve in the line between the two closed valves. "Emergency" means any occurrence (including any failure of hazard control or monitoring equipment) or event
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Double block and bleed means the closure of a line, duct, or pipe by closing and locking or tagging two in-line valves and by opening and
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Related to Double block and bleed

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  • COVID-19 symptoms means fever of 100.4 degrees Fahrenheit or higher, chills, cough, shortness of breath or difficulty breathing, fatigue, muscle or body aches, headache, new loss of taste or smell, sore throat, congestion or runny nose, nausea or vomiting, or diarrhea, unless a licensed health care professional determines the person’s symptoms were caused by a known condition other than COVID-19.

  • Diatomaceous earth filtration means a process resulting in substantial particulate removal in which a precoat cake of diatomaceous earth filter media is deposited on a support membrane (septum), and while the water is filtered by passing through the cake on the septum, additional filter media known as body feed is continuously added to the feed water to maintain the permeability of the filter cake.

  • apron means a defined area intended to accommodate aircraft for purposes of loading or unloading passengers, mail or cargo, fuelling, parking or maintenance;

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  • Cathode ray tube or “CRT” means a vacuum tube, composed primarily of glass, which is the visual or video display component of an electronic device. A “used, intact CRT” means a CRT whose vacuum has not been released. A “used, broken CRT” means glass removed from its housing or casing whose vacuum has been released.

  • Small municipal separate storm sewer system or "small MS4" means all separate storm sewers that are (i) owned or operated by the United States, a state, city, town, borough, county, parish, district, association, or other public body (created by or pursuant to state law) having jurisdiction over disposal of sewage, industrial wastes, stormwater, or other wastes, including special districts under state law such as a sewer district, flood control district or drainage district, or similar entity, or an Indian tribe or an authorized Indian tribal organization, or a designated and approved management agency under § 208 of the CWA that discharges to surface waters and (ii) not defined as "large" or "medium" municipal separate storm sewer systems or designated under 4VAC50-60-380 A 1. This term includes systems similar to separate storm sewer systems in municipalities, such as systems at military bases, large hospital or prison complexes, and highway and other thoroughfares. The term does not include separate storm sewers in very discrete areas, such as individual buildings.

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  • Dusting aid means a product designed or labeled to assist in removing dust and other soils from floors and other surfaces without leaving a wax or silicone based coating. “Dusting Aid” does not include “Pressurized Gas Duster.”

  • Permeable pavement means paving material that absorbs water or allows water to infiltrate through the paving material. "Permeable pavement" materials include porous concrete, permeable interlocking concrete pavers, concrete grid pavers, porous asphalt, and any other material with similar characteristics.

  • Basement means any area of the building having its floor subgrade (below ground level) on all sides.

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