Laboratory Safety
1.0 PURPOSE
The purpo of this standard is to define the minimum requirements for safety of employees working in the laboratories, to prevent injuries to the employees.
2.0 SCOPE
The standard applies to the laboratories within SABIC and it’s Affiliates facilities.
3.0 DEFINITIONS
3.1 Emergency: Any occurrence such as, but not limited to, equipment failure, rupture of containers or failure of control equipment, which results in an uncontrolled relea of a hazardous chemical into the workplace.
3.2 MSDS: Material Safety Data Sheet.
3.3 Shall: Signifies mandatory requirements.
3.4 Should: Signifies recommended/optional requirements.
4.0 REQUIREMENTS
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SABIC and its Affiliates having Chemical laboratory shall develop procedures and programs that meets the following requirements:
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SABIC Industrial Security shall be consulted for any clarification to this standard. The clarification given by SABIC Industrial Security shall be complied with and considered final.
4.1 Material Safety Data Sheets shall be obtained and maintained for all hazardous chemicals and made readily accessible to laboratory employees. Before a substance is received, information on proper handling, storage and disposal should be known to personnel involved in the u of the substance.
4.2 The laboratory shall have a general ventilation system with air intakes and exhaust located so as to avoid intake of contaminated air.
4.3 The general ventilation system shall be designed to:
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4.3.1 Provide a source of air for breathing and for input to local ventilation devices.
4.3.2 Ensure that laboratory air is continually replaced, preventing buildup of air concentrations of toxic substances during the working day.
4.3.3 Direct air flow into the laboratory from non-laboratory areas and out to the exterior of the building.
4.4 A laboratory hood with 0.75 m of hood-space for each person should be provided if two or more people spend most of their time with chemicals.
4.5 Each laboratory hood shall be equipped with a real-time flow monitoring device (e.g., a hood static pressure monitoring device) to allow for confirmation of hood performance before u.
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4.6 Hood or other local ventilation device shall be ud when working with any volatile substance with TLV of less than 50 ppm.
4.7 Other exhaust ventilation systems such as ventilated chemical storage cabinets, canopy hoods, snorkels, etc., should be provided as needed. Each canopy hood and snorkel should have individual exhaust ducts.
4.8 Exhaust air from glove boxes and isolation rooms should be pasd through scrubbers or filters prior to relea into the regular exhaust duct systems.
4.9 Modifications to the ventilation system shall be made only if thorough testing indicates that worker protection from airborne toxic substances shall continue to be adequate.
小学数学故事4.10 Air turbulence in the general ventilation and within hoods should be avoided. Hood air velocities of 22.9-38.1 meters per minute are normally adequate, if turbulence and cross drafts are avoided. A hood face velocity of 36.6-45.7 meters/min (120-150 fpm) is required to work involving carcinogens.怎么画玫瑰花
4.11 Air exhausted from lab fume hoods should not be recirculated.
4.12 Perchloric acid may only be ud inside a specially designed acid fume hood consisting of corrosion-resistant ductwork and wash down facilities (Reference NFPA 45, Standard on Fire Protection for Laboratories Using Chemicals).
NOTE: Minimum quantities of perchloric acid should be only kept on hand and the container stored inside an acid fume hood on a glass tray is deep enough to hold the contents of the bottle. Perchloric acid must not be kept for more than one year since explosive crystals may form.
4.13 Lab hoods and ventilation systems shall be inspected when installed or modified and at least annually thereafter. The inspection shall include:
4.13.1 Visual inspection of the physical condition of the hood, sash and ductwork.
4.13.2 宽容事例Air flow indication systems.
4.13.3 Face velocity.
4.13.4 Verification of inward air flow over the entire hood face (smoke test).
4.13.5 Changes in chemicals or work practices that may affect hood performance.
4.14 Following guidelines shall be considered for personnel protective equipment policy for the laboratory:
4.14.1 Safety glass shall be worn at all times inside the laboratory.
4.14.2 Chemical goggles shall be worn when handling more toxic chemicals where there is potential for a chemical splash.
4.14.3 Face shields shall be worn as splash protection when handling corrosive materials. Face shields shall be worn with either safety glass or goggles.
