Valve Tamper

Since sprinkler systems can only be effective if the valves are open, it is important to supervise the valves. 

Valve supervision should consist of all valves 2-1/2 and over or controlling sprinklers for critical hazards. It is a simple switch attached to an indicating valve to detect movement. It detects valve closure when the valve has been turned but would not provide an alarm if the seat of the valve drops. Some HPR carriers recommend the valve be locked in an open 

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All systems should receive a visual inspection each quarter. Test or inspect each antomatic system on an annual basis. Include all systems in the preventive maintenance plan. Test all snpervisory signal devices except valve tamper switches on a quarterly basis. Test valve tamper switches and water flow devices semiannually. Test duct detectors, electromechanical releasing devices, heat detectors, manual fire alarm boxes, and smoke detectors on a semiannual basis. Test occupant alarm notification devices to inclnde andible and visible devices at least annually. Maintain appropriate documentation on all tire-related system testing. 

The make-up hall valve can he set a little high so that some water always goes down the overflow pipe. This is rather difficult to set initially, hut is reliable and cannot easily he tampered with. It will work at all times, and so will waste water if the plant is not running. 

Sectionalizing block valves shall be accessible and protected from damage and tampering. If a blowdown valve is involved, it shall be located where the gas can be blown to the atmosphere without undue hazard. 

Move as quickly as possible with the most obvious and cost-effective physical improvements, such as perimeter fences, security lighting, tamper-proof manhole covers and valve boxes, etc. 

The protection of fire protection equipment from tampering to render it ineffective during a security event needs to be considered. Examples of this include locking water supply valves or installing fire detection cabinets in controlled areas. 

Inspections consist of a visual check of the fire protection systems by qualified personnel to ensure the system is available for immediate use. Visual checks should be made using a checklist. The inspection should verify that the fixed and portable equipment is ready to be operated. The associated devices, fittings, piping, and valving are inspected to ensure they have not been tampered with and that there is no obvious deterioration, physical damage, or condition to prevent operation. Documentation of the visual inspections may vary from... 

Once removed, check if the lead seal which is attached to the cap is intact. This normally gives the guarantee that the information on the tag plate is correct and that the valve is not tampered with. 

Safety relief valves (SRVs) and safety critical alarms and critical shutdown systems can be modified easily by aging or tampering. The local environment surrounding the device including cycles of freezing and thawing, moisture, corrosive contact with equipment inter-... 

Systems based on specialist keg type returnable containers. Specialised returnable kegs. Fitted with dip tube and components for interface valve with tamper-proof seals. Kegs can be tracked and labelled electronically. Ecomatic - Cyanamid Signet 2000 - Team Sprayers. Wisdom system with Micromatic drum valve . The development of a standard interface valve has been a key part of such developments. Returnable containers are not rinsed but transfer system is. 

Consider installing tamper-proof seals on all valves and package or container openings. 

Secure valves, manways, and other fixtures on transportation equipment when not in use. Lock aU vehicle and delivery trailer doors when not in use. Secure aU rail, truck, and barge containers stored at the facility. Use tamper-resistant or tamper-evident seals and locks on cargo compartment openings. 

Safety vent valves for high steam pressure should never be tampered with. 

Settings of safety valves shall never be tampered with. The initial setting shall be done by statutorily authorised boiler inspector only. 

The valves shall be tamper proof. Spring-loaded valves shall have protective covers on the springs so they do not get jammed due to corrosion, rains, dust, etc. 

All necessary safety devices (safety valves and mpture discs), automatic activation of safety systems if any dangerous condition develops, and safety interlocks are confirmed to be in working order. There shall be no chance of any tampering of the safety systems. 

Clogeed, dirty May dog valves, sprMder heads Mtqr prevent or restrict supplemental water flow-could dog other parts of system 2 <.01 Mora fftely to occur ki public buUings (tampering)... 

Never tamper with relief valves or other safety devices. 

Never tamper with, or alter, cylinders, valves, or safety-related devices. Do not tighten connections or leaking fittings or attempt other repairs while the system is under pressure. 

Never tamper with, or alter, cylinders, valves, or safety-related devices. Do not tighten connections or leaking fittings or attempt other repairs while the system is rmder pressure. Do not subject cylinders to artificially low temperatures or temperatures above 125 degrees F. Keep cylinders away from heat sources and never allow a flame to contact any part of the cylinder. 

Never tamper with pressure relief devices in valves or cylinders. Keep sparks and flames away from acetylene cylinders and under no circumstances allow a torch flame to come in contact with the fusible metal pressure relief devices, which melt at approximately 212°F (100°C). Should the valve outlet of an acetylene cylinder become clogged by ice, thaw with warm, but not boiling water. 

Allow enough space for safe operation of manual valves (see Figure 3-7). Prevent tampering with isolation and shutoff valves that are not manipulated during normal operation. 

Install locks or locking valves in pipelines. The removal of wrenches or wheels from valves to prevent tampering have very limited security value. 

Safety valves became an early feature of boiler pressure vessels. However, in the early- and mid-nineteenth century, operators could (and did, often with disastrous consequences) increase the operating pressure of their boilers by tying down the safety valve. Lockable safety valves were developed to prevent this, and also in 1855 John Ramsbottom invented a tamper-proof safety valve - one of many developments in safety valve designs in the latter part of the nineteenth century. 

Cylinder valve outlet and inlet connections, cylinder ancillary equipment connections, transfer connections, and regulator connections have been standardized by the industry for the handling of specific types of compressed and liquefied gases and to prevent the misapplication of these potentially hazardous materials. Users of compressed gases are cautioned not to tamper with or replace connections supplied by an authorized gas supplier. 

Never tamper with pressure relief devices in valves or cylinders. Keep sparks and flames away from acetylene cylinders and... 

Bulk containers used for storing liquid carbon dioxide at low pressures should be protected from tampering by unauthorized individuals. If a small enclosed location is used, the outlet from the pressure relief valves must be piped to the outside away from personnel, building air intakes, or other points such that discharge of the carbon dioxide vapor will not result in a high concentration of carbon dioxide. Such piping must not be equipped with valves or other means of stopping the flow of gas. 

Never tamper with or attempt to repair or alter cylinders, valves, or any safety relief devices. Return cylinders to the vendor for all repairs. 

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